Popular Mechanics 1920: Vol 33 Index

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Popular Mechanics Magazine (CHICAGO) Index to Volume XX XIII, 1920 EDITED BY H. H. WINDSOR JANUARY TO JUNE, Inclusive Abrasives, Stone, How to Make Accidents, Auto, Double Fences at Roadside Absorption, Heat, Testing Colors for 158 Prevent 7 Accelerator, New Auto, Makes Operation Acid Container Nonspilling Easy 754 Acids, Important Vegetable, Obtained from Accident—Aeroplane Used in Making Moving Benzene Pictures Caught on Telegraph Pole Adapter for Telephone Cords 45 Accident—Airman, -Knocked Senseless Admiral, U. S., Mail Planes Keep in Touch Goose, Falls 3,000 Feet é with Fleet Accident—Airplane Crash Teaches Value of Advertising—Aviary Lattice Cut to Form Safety Belt 268 Sidewalk Display Accident—American Ship Explodes in Ha- Advertising—Forest Scene Is Window Dis- vana Harbor play Accident—Auto Balances on Edge of High Advertising—Handbills from Aeroplane Sell Embankment 253 Real Estate 4Accident—Auto Used in Taking Movies Falls Advertising—Housefly on Loaf of Bread as Hundred Feet 397 Electric Sign for Bakery Accident —Balloon, Ignited by Lightning, Advertising—“Lost and Found” Column of “Snapped” in Falli Newspaper Carries Item of Fur Neckplece accident—Boiler Sheet of Exploding Loco- Lost by Aviatrix motive Saves Crew Adve Accident—British Submarine, Body like Phonograph Case Divulges Advertising, Photographer Loans Camera Acciden@—Captain Sir John Alcock Dies in Free for 747 Airplane Crash Advertising, Russian Stores Use Pictures as \ecident—“City of Muskegon” Wrecked on Advertising—Thousands of Free Rides to Lake Michigan 109 Popularize Auto Seen Boiler Falls into Bunk- Advertising—Truck ya as Santa's hou 335 Home Displays Wares Toy Factory. celdent—_F alling Railroad Coach Caught by Advertising, Unique, of Horses’ Inferiority Ice on Lake Champlain 5S by Tractor Dealer ecident—Fire Destroys Great Tar Depot in Advertising, Unusual, Los Angeles Public Li- North Russia 37 brary Uses 4 ecident—Fire in Gold Mine Quenched by Advertising, Window Cards for Made Self- Flooding 238 Supporting ecident—Fire Trucks Collide in Busy Street 24 Advertisement—Auto Truck with Sign on ecident—Flaming Oil Tank Rolls Through Advertises Church Service Kansas Town 217 Advertisement for Stammerer with Tre- scident—Fragments of Flywheel Shatter phined Skull Brings Subject Brick Wall 3 sey sment, Mechanical, Crowds Butcher scident—French Steamer “Dumbia” Turns S 7 on Its Side in Dry Dock 196 Advertisement, Model Airship Carried on Car ccident—Gasoline Car Wrecked by Break as in Rail 4 Advertisement, Motor Driven Toy Plane Is seident—Lightning, Fire, and Flood De- for Service Station ttroy Texas Oil Town Advertisement, Shipbuilders Use Phono- ttident—Locomotive Blows Its Cab Away 53 Se Gk A GIN ks ws orcas caves sees 6 tcident—Locomotive Plowing Snow Lands Advertisement, Tent as Truck Body Is in Swam 3 Advertisement, Unusual, Aids Antiaccident tident—Mail Aeroplane Collides with Fac- Campaign tory Chimney 826 Advertisement—Windmill Sign Made from ‘tident—Mine Cave-Ins Cause Ses BIE Soceceweseunene cer eeewessevensenes 929 Dilapse 2 Aeronautics: cident—Power Schooner “‘Casco” Wrecked Aeronautics Taught in Eastern College alata. o/h 0 ii'w ks be nes ee a ee a 6 Aeroplane Power Units Made Quickly Inter- cident Prevention Bureau Gives Motion changeable 3 »icture Show in Salt Mine 492 Aeroplane, World’s ‘ident Provides Salmon with Second Mouth 432 Completes tident, Railway, Freight Car Overturns Air-Craft Factory Uses X-Ray Inspection 542 ‘iner in 427 Airdrome, Private, Makes Preparations for tident Records, Roadside Warning Signs Night Flying ‘ear 869 Airman Makes Safe Landing on Telegraph 5 > eemantend Street Car Interrupts Pole ea rt Pe Fe Hailed as Future Torpedo Boat. 2 tae Bae Stone Derails Trolley Car. Airplane Wings Fold Up like Lazy Tongs 373 ident—Steamship Funnel Falls on D k American Aerial Coast Patrol Inaugu- Lighter 811 rated 201 ident—Street Cars Wreck Law Breaking American Planes to Race for International ato 694 Air Trophy Plunge Balloon Ignited by Lightning, Photogra- verted by Ginder 894 pher Snaps ident—Wrec *ked s Big Plane Makes Successful Flight Around Country

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epee + + ew cente ee Chinese Have Flying School in Canada... Circuit of Atlantic by Plane Interests Airmen Feminine Pizins Apparel to be Shown at 3 ND aed oie ha S At eae a Oak Oa ne First fh ey Hobo Makes His Appear- Pe Serr re Flare, Improved Aerial Gets Official Tests Flying Boat Lands on Ice and Takes to Air Without Mishap French Fishermen Bomb Porpoises : REY Ceeveesccescese 5 Gas Tank and Pilot's ar i Change Places in Remodeled DH-4’s........... a. Adopt Metal War Plane for Trade FS ARE ES ar eee nnte Glass Cage for Major Schroeder's Plane.. Great Passenger Airplane Richly Ap- a oe Na Pan cc dela al aay ca ich Helium Gas, Law to Prohibit Exportation of Proposed thc ccs nnk Dee Saene sone onus Huge Prize Offered Airman Who Accom- plishes Difficult Feat.............se00. Ideas for Making Aeroplanes Safer Have Chance at Big Prizes. ........ccee Lasce Hangar for’ Patrol Airplane at El 2 Lighthouse for Airmen Throws Vertical SL ei cc hee wb kak ASO AS oes ee Mail and Passenger Air Service from Fin- BMG 60 BOUPENOM COGat. . os cc ccsccccecce Modistes Make Flying Suits for Women.. “Naviator,” New Term Applied to Aerial NY 0.6n66 56 be was ae ORD ORR EEE ESR Navy Airplane Shot into Air by Seasled.. NC-4 Marooned Overnight in ‘Deserted DE cicctbveuet th tae ke wh had wae ak Oe New French Helicopter Has Odd Control III is‘ a Sn inc nS ode nee ae Oe New Propeller Defies Current Practice. a Thousand Mile Flight May Win Big BE cs ccraceahacaenw na Cheese hee eens oe Nozzle Propels Airplane by Air Jet..... oe Carried to Death in River by Oe tbc kadikde dated Wee a aad dk eee ee Plan Two Aerial Races During Year..... Predict Aerial Tournaments in Future... Preventing Electric Charges on Airships Prize Contests Open to American Fliers. Propeller Efficiency Increased by “Shroud” —_— = Climb Meter New Airplane Instru- rt aw Ae Mail Planes Gain in Speed and I oon. dd sh ll hk cle te win aia ah ta ae Replica of Alcock’s Biplane Wins Race to PE ic chicks ph che 6s ed wee Rules Uniform for All United States Fly- fre are Schroeder Climbs Six Miles, Falls Five, 8S Oe rrr ere Seaplane, Eight Passenger, for California i EPP rer rerTerTrTr te ee Seaplane Engine Placed Between Fuselage OE ERE rere re eee ee —— Fiane Starter Spins Propeller Shaft 7 | err te ore Smallest *pritish Airplane Weighs 220 ED ois oem ase kee ee oa ee ee 0 Touring Aeroplane Has Double Berths... Trans-African Air Course, British Airman errr er er err ah 7 Dirigibles to Start Cuba-Florida Air re Wrecked Aero Engine Salvaged by Rolling I vokc cc ceeengtredaseuwes Youth Builds Workable Aeroplane in Cel- Ff £0 Oe ere rr Aeroplane, All Metal German Crashes in pO TS errr eee Aeroplane Ambulances to be Used on Mexi- ‘a ee a renee Aeroplane and Ocean Liner Model, Boy SD aia hoe Ai kg gee ll ek on oe Aeroplane as Hearse for Dead Airman.... Aeroplane, British Captain Paints Pictures MekWs PW REN RS CATE OC em Kee a Rees Ree ae ase Aeroplane Carries Preacher to Remote Com- rere er ere rere Aeroplane Crash, Captain Alcock, Hero of BAREEERO WI, BOOS Bie os cccccceccceeues Aeroplane, Crowds Line Down Town Street >), Be "fs aeearerrrre ee eee Aeroplane, Doctor in Charts Mosquito Breed- PE Aca hadndeean dss ser cee eee wane con Aeroplane Drops Supplies to Ice Bound CE ore hades Beek & ek evan cea rane 111 864 103 182

\ POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 A x11 ‘ Aeroplane Engine, Low Exhaust Pressure i DE <cticws out ane hk Ob eee eee oS 546 Aeroplane Fabrics, Tests Show Worth of.. 70+ Aeroplane, Featherweight Auto Built Like. 553 Aeroplane, First of Fleet of Passenger a, SR rrr fe Pers rare 21 Aeroplane Flight, First over Peak of mockios, be J. A. CRASMAS. .cccccccveces 006 Aeroplane Flights, Biweekly, Switzerland SHTOR TOMTACOD WEERs occ cctisesvernetscce 179 Aeroplane, Four Engines Carried in Central EE ncakhee s400nndeeseenteareeseaenne 564 Aeroplane, French Aero Club Offers Prize FOr EGESlns Devices OF... ccccccccecesece 58 Aeroplane, Fur Neckpiece Lost from, Ad- WEE EE wenc ene beeennecesede eewka eas 25 Aeroplane, German Passenger, Gives Occu- Sn Ce cn cndctececcane ced eupeee Aeroplane, Glass Cage for Major Schroeder's 864 Aeroplane Glider, How to Build, for Ten Eee arr rrr rr re - 952 Aeroplane Glider, Shingle Makes........... 787 Aeroplane, Handbills from Help Sell Real DE Atccieeesoedbteb buns eweagkennhe ces 732 Aeroplane Hangars, Striped, Landing Field DMT <icavaneanec ces baateen ceases’ 855 wn Hobo, First Makes His Appear- $37 Acropiane- -Hydroplane Makes 11 Miles An . PY ip ianes ae kee oe Nee ete eames ee Aeroplane Instrument, New, Rate of Climb TE RPP eer rere ere ree ee 843 Aeroplane, Lights on Instrument Dial of.. 856 Aeroplane, Mail and Passenger, Links Mur- Maem Comet Ce Pails coos ccccccsvvcscces 334 ne pers Mail, Collides with Factory Chim- 836 Pe. REA Materials, Big Home on Wheels RE OO sna wach ate avncnaile 6 @ wk ha dan wt ee Tela 538 Aggeernae, Metal, Germans Adopt for Trade 209 errr ee Par ree Aeroplane, Military, Becomes Passenger C ar- SOE cad enkee cuadd cadens eRed a CARA Da ed 41 Aeroplane, Motorcyclist Climbs Ladder PO COO saceraateseréiede dad ian 641 Aeroplane, Navy, Shot into Air by Seasied. 241 Aeroplane, Navy's Torpedo, Makes Trial PEE Catanct Chess detees 64S Ou sO R40 RN Re 524 Aeroplane, NC-4 Marooned Overnight in TERRE WHE née ctins doses neke ds adv 346 Aeroplane, Nozzle to Propel by Air Jet De- OO” errr errr rer 730 Aeroplane Parachute, Thousand Dollar Prize EE Pre errr Tre 480 Aeroplane, Passage of Through Air Forms SEE exhesathnenas cikedaads ben aeane chen 36 Aeroplane, Passenger, Richly Appointed... 368 Aeroplane, Patrol, on Mexican Border, Large Hangar for at El Paso......cscesesccees 212 —e. Pilotless, Army’s Aerial Torpedo 442 Aeroplane Pony Power, for Chiidren...::: 761 Aeroplane Power Units Made petgreed Inter- SCMAMBOGDIS 2. ccccccccscesesecesecceecece 347 Aeroplane Propeller on Auto, “Wind for Movies Produced by ......-+-see2eeeeeee 906 Aeroplane Propeller, Reversible, Under Gov- OTFMMORE TOS 2. cccccccecccccvvcacsesescce 27 Aeroplane Propeller, “Shroud” to Increase PCRS PN rrr eee 409 Aeroplane Propeller, Sliding Mounting Measures Thrust in Flight............... 567 Aeroplane Propeller, Unusual, Defies Cur- OE OE c'o.n 0 6b5 0060s bhecbadensegenes 544 Aeroplane, Replica of Alcock’s Wins Race i SE -inacedeccbsesckwadeedarqane 196 Aeroplane, Sahara Desert Crossed in....... 828 Aeroplane Service, London to Paris, British Company Maintains High Standard for.. 5 Aeroplane, Single, Separate Hangar for Cuts St Ree Re ee 361 Aeroplane, Small Monoplane in Structure. 707 Aeroplane, Smallest British, Weighs 220 TE pated 540 0s.4.» a sv ace eh 181 Aeroplane Starter, Simple, Spins Propeller Pt ee CD censcccacoge eee an eeee sue 653 Aeroplane Torpedo Future Navy Weapon.. 222 Aeroplane, Touring, Has Upper and Lower SE nih ont hes bene bde CEM AREN ORS 000 68 184 Aeroplane, Toy, Air Motor Drives......... 118 Aeroplane, Toy, Climbs Rod on Radiator . SA ND oc eccne sus vachonsibexad 75 Aeroplane, Toy, Motor Driven, Advertises Pe Pe. cess ane 6sees soeesaeel 88e Aeroplane Transfer, Mid-wz,ir, Rope Ladder ck pela babe ae anes 6 ha Oe 581

o as -* Pe =. = — = a. SS eae AO MMAR ny

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641 241 524 730

POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Aeroplane, Twin Engined Bomber, Makes Successful Flight Around Country....... 213 Aeroplane Type Ski Glider.............e.6. 307 Aeroplane Used by Insurance aapuater for Professional Purposes Aeroplane Used by Real Estate Man to Carry Customer to Farm Aeroplane Used to Gather Samples of Smoke Oper Bere BMS CaF oc cscs cevecessscecics Aeroplane, Weather Vane Built MGs csconse 150 Aeroplane Wings Fold Up like Lazy Tongs 373 “Aeroplane,” Wooden, for Sidewalk Driving Pi PY cihvccactvanaasbangack bien me 441 Aeroplane, World's Largest, Germany Com- St ibcinnnted eee cane Ween eee mae’ 9 Aeroplane, Youth Builds in Cellar of Home 212 Aeroplanes, American, Cannon Engine De- veloped Sprepepppereaipectesppatliie gesener: ef tnccialt Aeroplanes, American French 75’s Ordered for Aeroplanes, American, to Race for Inter- See DP TO 60k ecnaseecccanccrave 59 Aeroplanes and Ships Guided by Wireless POY ava 60's 4s ecna houWe.6 0S G46 RR ba Aeroplanes, Army, Relay Message 1,000 Miles SR Be Bn oo cc vcteresuneesondecence Aeroplanes, Climatic Surveys Made by. 720 Aeroplanes, High Speed, Photographing... 638 Aeroplanes, Ideas for Making Safer Have Se Oe Te IOs 6.5 5:0 0605068 ds benznces 959 Aeroplanes, Larger Cargo to Carry Mail.. 404 Aeroplanes, ~ pean Paris, American Tour- ists Charter Aeroplanes, Mail, i OOO ORE rrr er 870 Aeroplanes, Mail, with Fleet Aeroplanes, Probable Aeroplanes, Mail, Skis Fitted to for Winter ee eer eT eee Aeroplanes may Reseed Mountains Denuded by Forest Fires Aeroplanes, Model, Complete Construction lO errr ee eae Aeroplanes, New York Police Ask City DP <A csteaw be edbedeedenaeaece anaes Aeroplanes, Photographs Taken in Find i i Cs ws aeces recewe es haves Aeroplanes, Remodeled Battle, Eight Ma- chine Guns to be Carried by............ 843 Aeroplanes, Remodeled DH-4’s, Gas Tank and Pilot's Cockpit Change Places in..... 345 Aeroplanes, Remodeled Mail, Gain in Speed tt —3ane Sere re eer Aeroplanes, 20, Used to Rid Rice Fields of .. 2 rrr Agitator for Mixing Liquids............... 929 Agricultural Implements: Air Cooled Motor on Wheels for Farm PE Sania dak wh dine 6d ee Wah ae wd ee ah American Tractors Interest lane ca oo, One eaten ate uk eee Clover Seed Scarifier, Homemade........ 74 77 Cornstalk Cutter Makes Silage in Fieid.. 346 Ditches, Device for Back Filling......... “.: Turns Under Weeds While Plow- Gasoline ‘Tractor’ Has Mowing ‘Attach- PE 48h. 6s Red ndonbe dn Kaen habe nk ae wo oa on Hay Rake and Stacker ee a Lalas atte din 804 Piew, Effective Line Guard fo DE. sk dba an ae aire whee doe mh ee uieckn deleaks 230 he Bug Exterminated by a Ma- | eR egereperhitads Row Marker for Transplanting Scarecrow, Automatic Explosive Device ee a ae a Coe eee eee eee eset sees eeeessetesesseee a L heute Manure Stored in......... 869 Cricket, Coulee, Warring to Extinction, by RRS Dynamite Forms Large “Jugs” in Heavy _ Clay Se ee a 3 French Tractor Goes Backward or For- WE Fick ca edhk kes nc esebebionans padennae 19 Hemp Growing Boomed by Improved Ma- SE 8c bh bes cendsdheeantatendeceeavene 33 Insect a Fungus Killers Studied by MND. nnvekessssencentecnenegaedeses 264 Oldest Soil ‘Experiment Field at Urbana, DE bbe wna do6n 800000000564 0kbeeeaeee Scarecrow, Automatic Explosive, Effective Device Bp hiekesie anil eh Weta bak 4 edn @ ee amo 4 Seeding the World, by R. P. Crawford.... 575 —— vie Shows Proper Fertilization OE Se £244 4064604008000 EKER DE OROeCERS Sulphur as Fertilizer for Alfalfa........ 4 Tractor Testing Required in Nebraska.. 517 Worms Eliminated from Apples by In- secticide ee ee | * gponsta lbp we en dierent sian ieee 78 Air Blast, Removing Moisture from....... 294 Air Brake, Train Pipe for Has Automatic Coupling Alr, ritain Plans Huge Plant to Extract PS skenbdwndkrwdheneee an ween a Equipment ‘on New Boatswain's Air Chamber, Warm, Provided Around Un- Pe Se i cecvnnceasekesaeneeoense 36 Air Circuit of Atlantic Interests Fliers.... 5 Air, Compressed, Alcohol Keeps Water in from Freezing 2 Air, Compressed, Cleans Road in New York DE: Stake DHAAAS CRED ReAh Ona tkebae Seées 84 Air, Compressed, Cleans Tobacco Pipe..... 615 Air Compressor, Small, for Private Garages 667 ~*~. = Issues from Well in Western aie’ Dispensing Hose, Support for Has Flex- Pn DE Lcthien shen duecwns ae eVeade denen ee Air Hose Chuck, Nonleaking, Locks on .. renee re errant Air Hose Rack for Garage, Crankshaft akes Air in House, Steam Generator in "Furnace BEE Sit adntad.6nen seeds 6h es 6b dO ens 280 Air Jet, Nozzle to Propel Aeroplane by, de- : Air Toe. Cuba-Florida, Two Dirigibles to Start Air Liner, row to Paris, Luncheon Bas- kets Sold o Sth dessert eeseks ae enkaee nawe 24 Air Patrol, Coastal, United States Army In- SED éscawndesataceesnekiskesanamiens 01 Air, Preheated, and Oil Fuel Make Furnace DE dedeeeensnsdens tgasuwietasaee ees ° Air Pressure Gauge Tests Engine Valves... 758 a Propeller, Amphibious Speedster Driven CeCe Ahh ade enh CECE a cewek “aa Study, Design of Windmills Air Race, "sme, . ‘Winners ‘ot ‘Get Prizes. . a 480 Air Service British Boys Trained as Me- SE EE, cc nndnthek he use Oe ee cadens 6 bee 685 Air Service, British, Test for Entering..... 93 Air Service School, Britain's, Teaches Cul- tural and Classical Subjects............. 218 Air Suction Trick, Cork and Glass Tube WE chs atkei snd edbawakentadaved sens cee 318 Air Tank, Oil Well Casing | Ra papetaage 460 “Air Tight” Stove, Simple Oil Burner Im- a ra te ee eee 660 Airdrome, Private, Night Flying vnteaenaieel tions Made by Airdrome, Striped Hangars Identify. or 855 Airman, Big Prize to for Nine Thousand Airman, British, Flies from Cairo to Cape MEE ssos Suede dake eee ceehaev hues th eaeewe 838 Airman, Dead, Coffin of Strapped to Air- St DD cecccnesesenkoneasese464000.0 Airman, French, Border Fort Photographed by 885 Airman Knocked Senseless by Goose, Falls De DE bctinndianendce aes ek ean ea as. awe — Makes Safe Landing on Telegraph Dl “dt cues dee aden semis CUE RS Nee 68-5600 Airman, Sailwagon Ride Thrills............ Airman, Schroeder, Breaks Altitude Record, Ci 56. cee hace chen saa OO8 Airman Who Accomplishes Difficult Feat, Huge Prize Offered ia. American, Mexican Fishermen Mur- er Airmen, British, to Receive Weather wel CGD BF WUSONOD ccc ccc cvcocevasacscvecs 36

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4 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Airmen Map Makers, Clouds and Fog Hinder RANMA Serr ae Airmen, Two French, in Plane, Sahara Des- — £ 2 "esata aera Airmen Will Have Future Aerial Tourna- + i6't 6S 66h e oes oe ROO SOG 6E8 40S 0 6bGeee Airship, First Rigid, United States Navy Buildin Airship H ‘Hangar, Greatest, Model of on Bx: Airship— italian Dirigible to Carry Passen- 484 828 396 670 647 =r an 48 Airship Model Borne on Car as Adver- RY ins id cinks tin eee ee Awe eee eee eke 697 Airship “R-38,"” Crew of Sails for England. 835 Airships, Preventing Electric Charges on. 394 Airway, Cairo to Cape, British Airman Fol- i anak ab endian ead ow ak daa a0: oo aie 838 Alarm, Auto Theft, Moving of Car Sounds. 907 2 Bell, Wireless, Gives Ship Operator 706 — Clock, Photo Prints Timed by Sound "06 Alarm Clock Signal, String Stops......... 466 Alcohol, Fusel Oil, and Benzol Mixture as neue 631 Alcohol Keeps Water in Compressed Air FpOM Freezing .....cccccccccsccscccccces 284 Alcohol, Oil Limits Evaporation of........ 132 Alcohol, roe from Auto Radiator....... 453 Alcohol Sheriffs of Washington State Go to School to Learn to Detect............. 710 Alcohol, Solidified, Carbon Trouble Pre- ARR ee ere 612 Alcohol, Solidified, for Cleaning Windshields 614 Alcohol, Wood, Produced by Odd Machines. 400 Alfalfa, Sulphur as Fertilizer for.......... 94 Alligator Pear, Much Valuable Fat in.... 884 — Small, Travel Through Parcel 5s Alloy, New oo Edged Tools Made of are tt son oak de hace ahead 2 ex ott 180 Alloy, Zine ¢ re opper, Stronger Than Steel 420 Alloys, Scientists’ Organization to Study... 221 ——— Paste, Baker Models Bust of Presi- - Alter, J. "Cecil: First Aid to wrecng eee . 378 Flood, Unborn, Obtaining Secrets of.... 557 Wonderland Revealed by New Highway. 899 Altitude Effect, Movies Get from Posing on TD. .bi risa beh ee C84 oC ewe ae 889 Altitude Record, Airman Breaks, Falls, and ies aa cadiae wed a > +e eee oes A Re 726 Aluminum Cake Mold Has Form of Re- i ods cee h ed tend bwee da eens 34 Aluminum Castings Tested by Weight..... 615 Aluminum Containers, Two, Coffee Perco- PT Lhe teed ONS bass MBO Kwon dees weet 762 a or Zinc Strip Substitute for Oil- 706 Pt hi he cect he ac Ard hae One dk 6 a eek Aluminum, Pure, Readily Worked with Car- penters’ SE Gk Wain eeh bb eee e S6n Ea. eae Oe — Big Public, "Chicago Park to 385 ne ik. 00k ih Re Ga ee ma ie nee ako i—onem, Goldfish Stand for Parlor Lamp ane Aquarium to be Built in Golden Gate Park. 754 Aqueduct, Forty Mile, to Give eeeapeRgin SS rr rrr ere 205 Arbiter, Américan Soldier is in Caucasus... 195 Arbor, Grape, on Pasadena Street Corner... 586 Asie Tilting, Motor Driven Saw Bench 843 bd ee 606.6 bees CREE One 6h ews 6246S 4 -_ pees Used to Make Synthetic Am- one ase. °Small, Improved Searchlight Gives In- tensity MR Mra Sty did ck ta oka ocean eo 492 Are Welder, Electric, Ornaments Drawn by k= re errr 432 Are Welding Outfit, Compact Three Phase, Handles Heavy Work..........e.eeeseee. 246 Arch as Memorial to Service Men, Livings- ton County, Illinois, Erects.............. 90¢ Arch with Tackle Block for Loading Farm EL <n cut Kee nt ou args beted eee andes ke 78 Archeologists, French, Restoring Ancient City of Far East, by Francis Dickie.... 422 Archeology—Ancient Ruins Discovered by Camera, by Frederic ener tsekee eae 50: ep Iron Burial Casket Mys- CE Ee BE accccteccccsbeseetaneees 26 Archeology—Third Mexican Pyramid Found in “City of the Gods”... .ccccccccccecceses 59¢ Arches, Concrete, Restore Old Iron Bridge 2 Arches, Wooden, Hold Canvas over Concrete 6a Archipelago, Arctic, as Future Steel Center ri ae ~ ebaiegag Plans for Country Pt ACen veh ens dete dees <a wee ane e kes «+ 16 Arm oy Spindle File Guards Papers....... 60: Armament Factories, Krupp, Manufacturing PME pcowrsacvcccessveesésaveseess 411

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246 90¢ 78( 598 24 54: 16( 60% 411 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Armchairs, British Battleships to Have for BE GE Es inc cokes cca didgegroreueines Armenians, Red Cross Aid of Reads like Ee te rep beeen eh eeees wae wah keh Armies of World War, Geologists Aided. Armor, One Piece, Protects Electric Wires. a Put on Train to Foil Mexican Ban- Sheep err rerer eT Terre rere et Army Balloon, Dragging Anchor, Darkens Ne NED wie c ct ceascevsnsoresetnanse Army Aeroplanes Relay Message 1,000 Miles Be MDs oo gc 0060 8eb snd CASK R ee EK ES Army Air Race, Winners of Get Prizes..... Army, American, Develops Improved Search- light with RE MI a poets cite clean Army Baggage, Unclaimed, Piled Mountain eee ee ee eee eee eee esses eeeeeeseeesee ese & Army, Bolshevist, Clothed in Nondescript Garb Army, German, Five Divisions of, Held _ American Telephone and Wireless Ruse. Army Gun, New Sporting Rifle Resembles. Army Hospital, Flock of Tractors Move..... Army Motor Cars, Many British, Produced YT Pere tree err rere Army Motor Truck Is Recruiting Station. Army, Navy Transfers Railroad Gun Mounts Firm “Demobil- Army Recruit Educational Center, 28 Sol- diers to Demonstrate Value of Training in Army Shoe, New, to Serve All Purposes.... Army Supply Base, Four Big Cranes In- ” —§ errr rari rrr eee Army, United States, Construction and For- =— Division of Render Valuable Ser- I sh cc mtiae ance i Sh Gey se cs a de eee ls aaa Army, United States, First Authentic News OF DO SOO Obs «capes vesssrsvascace Army, U. S., Has Mobile Shoe Repair Unit. Army, U. S., in Hawaii, to Have Recupera- tion Camp on Extinct Volceano........... Arrester, Plural Lightning, Saves Telephone PD “tu ches hee Wb hak & ¥60 he ck yew wee des Bs, Ei 6 hone + cheer tee Cievnrene Arrow Heads, Ornamental Design of....... aoe. Tanks Carried from on Special Art—British Captain Paints Pictures in RE RRR SC a arya Artillery Fire, French a Angle Measur- ing Periscope SS Sarre ae Artist, Armless Dutch Gass Feet to Paint IES ie Air ocac Sicws iv. ai in cal oe enact wa hal se cnt Artist, Child, Glazed Tile Sets for Making PC er ry re yee Artist, Stippling Pen for Run by Clockwork —— Brushes Covered with Vaseline to Fe re +, are Pre re Asbestos and Cement, Pipe and Wall Tile aids a bib Gund a ee eel als REG Roane Asbestos Lined Doors, Fireplace Hidden in a PERE Ragas SP Oe sen Asbestos Lined Mail Pouches for Aeroplane Ash Can as Fire Extinguisher............. Ash, Cigar, Used for Silver Polish........ _ (Tray, Copper Plates of Invitations Made Lt tf cee CAE OD C6 06 WH eed BSE ROR Ae wee wees Se Se, DNS... oo caveat dssesicuneee Ash Tray with Two Pointed Prong......... = and Wood Combined in Bridge oors Variety of Found in Cracks of kL RS eo re eee Asphalt Workers, Trinidad, to Live in Model Pea ere ree atieertey Pye pars tepen Aapeusily Hall, Students Trades School Build. ........0--ccccccecse Astronomers Seek Planet Near Neptune... Astronomy—Many Planets and Sun in Un- usual Conjunction Astronomy—Meteor's RS eR rene Astronomy, Society for Study of Includes Amateurs and Professionals.............. Asylum, Foundling, Babies Received on Re- ue we .. & SRE ere tenors Athletics—Bar Bell Exerciser Adjustable in I ni nc nade st sel kak cs es nicest staan aca ik Ga a are — ae Ski Jumpers Loop the oop . Cr es 550 442 244 186 918 629 905 53 183 440 504 897 462 760 352 Atmosphere, Humid, Changes of Pressure Produced in by Passage of Aeroplane. Atom, The Birth of, by Rogers D. Rusk, TR ee ee ed ehhh had SE WSS Owes oe Atomizer Injects Carbon Remover into Cyl- RPO rrr rer eee eee eee Cee Auction, Greatest Stamp Collection to be PE Ee cc nttew abn asapeeheee sous rue Auditorium, Colossal German, in Greek Style Audience, Odd Use of Induction Coil DEE 6 cb Coo ws mheesmenesEsaeazaieneaee Auger and Shovel, Settling Silo Straight- PT eee ee ee Auger and Tractor Combined, Telephone Poles Planted Quickly with.............. Auger, Valve Grinder Made from.......... Australia, Irrigation Reservoir Planned by. Automaton, Musical, Displays Uncanny Skill Automobile Accessory — Indicating Mirror for Auto Measures Distance Behind...... Automobile Accessory, Novel, Carries Vari- OU BTEEE ccccc cc cccegewreesessesesess Automobile Accosery = — Whirling Signal Warns of Stop or TUPM. .... cc rccsccccvce Automobile Accidents—Double Fences at Roadside Preven Automobile, fone ll Propeller on Wind for eee OE si nbcatocnseseeeneseocs Automobile and Camel Team Serve Inland pee rr re Automobile and Cycle, Delivery Truck Re- SEE EEE. non vins ccd geenonas 6auees nae Automobile—Atomizer Injects Carbon Re- SSCS FOO CHTOOG coos ccccweresvcceess Automobile, Auxiliary Cells Stored beneath PEPE cccekbbead? O0Fk pas de oKe ee ear ugee & Automobile Balances on Edge of High Em- DEL: 6 ceed onde esthenheasedeen eadeves Automobile Bearing Liners, Clips Hold..... Automobile ——— Locomotive for Narrow CD Tn oan onene s0n40s 6404008 K08 Automobile Bodies, Rubbing Machine for SPOUNEO TERE DOUG. ccc ccccesvesssceece Automobile, Boring Machine for Crankshaft Ee. nk oceans ees eetparne ees naewns Automobile Brake Lining, Open Gap in CE SEED sanvsrccvetatne sd c0etneeneees - aes Brake Lining, Scraps Used to oc Automobile, Bushing Reamers for.......... Automobile Camping, Fire Irons for........ Automobile—Carbon Trouble Prevented by eR ere rrr ee Automobile Carryalls, Elaborate, Used as Pe cc cede enddcapiach ose hans nees Automobile Chassis, Six, Shipped on One PE énectatcticsntes ndbicdds oe ak Gare Automobile, Cold Weather Starting with Hot | i Sarre a era -— peer Combined Head and Tail Lights Automobile Dash Attachment een. ee TORR, og nos g0 ones eck enss Automobile Concern, Detroit, — Huge ffice and Laboratory Building ........ — Cone Clutch, Slipping. Remedy Me i. shaves cans brewer ake ink eke hemes Automobile, “Country ne Se... eka eaneneeteoe cent Automobile Door Pockets, Divided, for Car- Ls ESE ee ee Automobile Driving, Careful, Cinder Piles at ED sic cp aG anette e awa ae 6 es Automobile Dry Cells, Easy Testing of..... Automobile, Electric Lighting System for Garage Connected to Storage Battery of Automobile, Electric, of New Type, Com- Se Es ote cadence secéaanene Automobile, Electric Toaster for Starting... Automobile Engine and Radiator, Electric SE DD wibwe nde 6 cddes odes Gbwe seen the ee Automobile Engine > i See . cos cabekentonee' 60004 Automobile Engine Cylinder, Spring Guide Helps Piston Slip into House,” like Old- Automobile Engine, Exhaust Assists in SP re eran Automobile Engine Exhaust Is Potato DP ind bun ON SER Odes a ORO e eee 6 ace © oOo Automobile Engine Heated by Concrete Pt ab tieced paed asin teatekensceas anes a Automobile Engine, How to Protect from Cold uw 346 751 445 195 74 621 470 292 190

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| | ; i — eae Kill a= A me OA OP vn ge Automobile Engine, Manifold Heater for. -. 288 Automobile Engine Manifold, Replacing... 609 Automobile Engine, Offset Wrenches for Re- moving Connecting Rod of............... 68 Automobile Engine Oil, Funnel Tube for... 478 Automobile Engine, Straightening Connect- EE an BS 2 win @ bak hw a aw 0. beac 766 Automobile Engine Troubles, Simple Con- OR ree res 362 Automobile Engine, 12 Cylinder, Is Italian IE Fo in aig aga aka AS pdithimiin me Soha ee es 256 Automobile Engine Valves, Air Pressure I == inh cea @ be a ead lee 758 Automobile, English Featherweight, Built Oe OS ane rrr ere 553 Automobile, English Plant Makes in 11 Min- aa ako. lige dae in rd ee nei ee a, ee hina le ee a 50 Automobile, Extension Arm Spotlight for oh ca sear en re elk I a 52 Automobile, Fan Clutch to Give Better Con- I os ob ait hee ee eek ee ee ROO 918 Automobile Fenders, Leather Shields for.... 64 Automobile Floor, Old License Plates Pro- SRR rare i re rn 126 Automobile, French, Top Disappears in SD CERI BO ccs asctececewsnsescve 36 Automobile, Garage Grinder Driven by..... 779 Automobile, Gas Producer for may Be Sub- ENED COP GOO sg cic kckcccentnvercecwe 230 Automobile, German, Shaped like Whale... 79 Automobile Grocery Store Comes to House- _,... 8 RSPR err eee 812 Automobile, Hand Truck for Towing....... 767 Automobile, High Grade, Has Electric Light EL ihe an.a Wi hina ae we aie ha Gen eee eee 401 Automobile, Homemade Toy, on ty tiga wo 477 Automobile Hood, Baggage Rack over. 445 Automobile Horn Button, Mounting for..... 133 Automobile Horn Operated by Foot........ 932 Automobile “Hot Spot” Manifold Has Ad- Se: hon cic ce RKbA CES OA SO VEO 373 — Inner Tube Protected by New ate Automobile Inner Tube, Rubber Type Made kan Ws: Dee hn eee «6h Odie ean meee 947 Automobile Jack, Quick Acting............. 764 Automobile Jumps Hurdle at Horse Show CS BORE ear 655 Automobile Lamp, new, Vacuum in Intake Manifold Regulates .............ceecee0. 744 Automobile Lamps in Fenders, Glare Ob- EE Sa te dee eee ice > om Mae ROS 6 eae 705 Automedtic, Law Breaking, Street Cars I Paid as Ai hace ck ea de oe eh Oe ae ale eae Xo 694 Automobile License Tags Make Street Signs 622 Automobile Lock, Steering Gear Fastened NE: fh i onde ws kek Bae eee eae 406 Automobile, Low Gear, Repair for......... 614 Automobile, Luxurious, Has Writing Desk Ct ttetheie eee nee eds aie Bid wait oo. n a Ge 06. RAS Oo ne 42 Automobile Mechanic, Creeper made from EE hee teh Ce Kh KER aca bwe see 295 Automobile Men Take Unique Census....... 330 Automobile Meter Shows Fuel Consumed. 113 Automobiis, i a Sound Waves Run; Light Rays PR ere 187 Automobile. Model *Dirigible Carried as Ad- IE ON cc ccscnecéccenecsinwssenas 697 Automobile Motor, New Overhaul Stand Holds in Any Position................... 732 Automobile Motor Pistons of Iron, Special SE OD MOOR, . oc on ccnnceseueeesics« 750 Automobile, Mounting for Warning Button.. 133 Automobile. Moving Picture, Falls Hundred 2 Ge yg RPP ae 397 Automobile, New Accelerator Makes Opera- tion Easy RSA eS Fy ey ee 754 Automobile, New Device Protects Ignition itt ssh Ved aoe Na Kea iE aes wae ee 3% 117 Automobile, New Popular, Saapenston Springs in Peculiar Arrangement......... 176 ee ile, bh aney Man, Three Wheel, Popular 4 nt ees Wak ie weed ees a oes wees subommne Operates Tank Pump........... 606 Automobile Owner, Electric Soldering Iron for 80 ey royeetpney Easily and Rapidly 58 Automobile Park, American, at neeeyereie PE, Seat ceechecceshe cer eees ‘ 500 Automobile Pedals, Stick Depresses......... 773 Automobile Piston, Maul made from........ 926 Automobile, Plate and Pair of Rollers Make Rare re ere 46 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Automobile, Quick Operating Jacks for Automobile Racers, Big Prizes for Automobile Radiator, Heater for........... Automobile Radiator, Kerosene Heater Pre- i ck coped caneanes caaeee Automobile Radiator, Saving Alcohol from.. or Radiator Shield Regulated by EER ES SS Se ae ae ee Po ITA Radiator Toy Climbs Rod While ne a Ne nik WES eye Wig Oe a Automobile Radiators, Tap Street Circuit to % Sere ar Automobile, Rail, Handles Handcars and Ce RED cin ens C0 C500 0640 K00e0K0 — Reaches Bottom of North Amer- Ausomstiie. Refrigerator for Made I a ae Automobile, —y . -~pad Equipped, Canning Ce CE pe bivededeccencrens wéeee Automobile Resair Cradles, Collapsible, for I ii as oc ies Dk ae cin Mgmnt: 646 Be ee Oe Automobile Repair Truck for Electric Ac- es Answers Call of Troubled House- GAN a Fe Rg Sine nih Greene Caner Automobile pone, en nine case kane seb aeeebig e's Automobile, Road ‘Cletaoa by Snowplow At- I See ss a ae ee © ea ake ae Automobile, Rubber Shock Absorber for.... Automobile Running Board, Leather Hat DOR mee be ALESGMOE CO. 22.20 2ccccccceces Automobile Seat Covers, Washable, Button SS e ere Automobile, Secret Ignition Switch for..... Automobile Service Station, Motor Driven TEP Pee BOVSPUUGGR. « cccscecccccncesecse eS Simple Body Added to Motor- acacia a a ci ete ts Wa we Oe an Slea Runners on Front Axles ee Automobile, Small, New Gear Attachment Gives Many Speeds PEE ES aS Le - eg Small Refrigerator for Oe | | "SRR en Automobile, Small, Speedy, Practical Venicie 6 Automobile Spark Plug Cleaned over Gas Burner Automobile Spark ‘Plug Screws, “Paper SE Sc adatneecninscrecesiges Automobile Spark. Plugs, ‘Ammonia for Cleani ne Ee Ry reer er Ere rrr. ee a es e Springs, Compressed Air for —_ Autsmesiie Springs, Leveling. .........00. Automobile Starter, Spark Piug with Gas _. . & FO 4p Saree Automobile Starting Motor, Coaster Wagons RO ep ere ne Automobile Storage Battery, Care Made Easy by Compact Outfit..........ccccceee Automobile, Table for Use in.............. Automobile Theft Alarm Sounds When Car is Moved ee) ing Automobile, Three Mounted Outside oc pera Tire, ve Electric Theft Protector Autemshite Tire Makers Employ ee WO TEED sic cc itcicscucccocvcseces Automobile, Tire Repair Shelf for Automobile Tire, Repairing on Rim........ Automobile Tire Rim, New Demountable, One Nut Holds in Place................. Anes Tire Work, Old Ice Tongs Used fo eee wees eee eee ee Ce ee ee aupeuebiia Tires, Buffing Lathe for Runs on wi cdichnwdus ce aeesereeeennce Automobile Tires Hung on Chains, Show .. —~ rrRerrarrerrrre. Automobile Tires, Postcards Used to Mend.. Automobile Tops, Cementless Rubber CEE vnc obec cosncdoetdssatascave Automobile, Toy, Motorcycle Engine Drives Automobile Transmission Band, Anvil for TE PE ccctcetsacsesieeeeane ves Automobile Trouble Lamp, Adjustable...... Automobile Truck, Church Service Adver- tised by Monster Sign on..........es0006- Automobile Truck, Combined Bumper and Step for ee Automobile Truck, Freight Car Shipped by 589 124 121 432 622 906 68 706 eae an

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POPULAR MECHANICS INDEX, VOLUME XXNXIII, 1920 Automobile Truck, Library on Serves Large WOTGOOET occ ccc ccsccccsccceceess ee seccees Automobile Truck, Nonskid Appliance for OO Perr ee ee Automobile Truck Serves as Traveling Den- OE arr ee —— Truck, Small, Has Living Quar- pe. ~~ EAFXA Truck, Turntable on Laamber TrAMSport .....ccccccscccccsscscce Automobile Trucks Used as Shoe Repair BROS Hy ALMA . «2c cescccccesccseesevecces Automobile, Turn on Side for Adjustment. Automobile Turntable, Pitless, Runs on C ir- i ot awh dboneiak NOM ER NS e O6a he Automobile, Vertical Rear Bumpers to Pro- aaa ey ery ee er Automobile, Wax Taper Gets Light from. Automobile Wheel, Appliance Holds When Axle Shaft is Broken................se+. Automobile Wheel Operates Tire Pump. Automobile, Wheeled Frame with Makes | "Frm eae ero ee Automobile—Why Breather Is Necessary for re Ge DEMIID . occ cacescvesecesses Automobile Wins Close Race with Ice Boat Automobile Windshield, Application of Chewing Tobacco Prevents Gathering of Moisture on ee ee Automobile Windshield Cleaner, Pads of Hold Chemical Mixture. .....cccccccccccce - ~ “Pe Windshield Cleaner Quickly ee ng Automobile with Tractor Wheels, Makes Speed over Alaskan Snow............... Automobiles, British Officers Transport from Place to Place by Boat Automobiles Clincher Tires Put On by New a ina be chi da dt dresses. tose sik a cake We a a Automobiles, Closed, IN essai dea ch ch te ee @ ol ae ake 2 a Automobiles, Electric Primer for Vaporizes EE ht coke oitha & ante oA le We eek Oi Mak & Stloke Wine Automobiles, Electric Truck Moves in Mod- ~ - Rs ares reaae Automobiles, Express Company Delivers by EE 6. a oii 6 6:5 ane ae bee Miele bun Automobiles, Free Rides in to Popularize... Automobiles, Front Axle Stand for......... a —peneuey- Japan Has Novel Speed Limits

PP POPPE EEE PREM English “Scooter” Has . & eS ee sei papeeias ee Automobiles, Wusbered Parking Spaces" for Aapoeanes, Railroad, Show Novelties in EAs 5:6 alice ate aca ak ane arial Automebiles--Sidecar Taxi is French Motor ET, ard Kids dine eg ka ach wine tei al abe eae to Automobiles, ‘Small, Oil Petcock Wrench for Automobiles, Tar on, Mixture for Removing. Automobiles, Telephone Generator for Elec- trical Testing _ SSRIS ERS Set eae Automobiles, Ten Million in Use Next Year agate nn in in ies Stine nad Automobiles, Test Track _. fee eee Automobiles, Three Wheeled, at Paris Show Automobiles, Uncrated, Simple werd Permits Steamer to Load ee ee es CHSC TSHSHSHSEHHSSSOHEEECS EEE SEE SE SELE SEES I PR BERNIE ag ig aed Automobilists, British Columbia Town Warns with “Silent” Policeman.......... Automobilists, Change in British Columbia Road Rules’ Pt Oe Dn. 66kniccakhee ee Automonbilista, , tre Gloves for Keep- ing Hands of Warm...................... Automobilists, Finn Signal System for. Automobilists, Gasoline Thieves } Make War on Automobilists, seeped vans - on ae Assists sete eee eee Seseseseeeeesesesese ee ee ee ee ee ee a se ee eens ee Awl, Electric, Hundred Buttonholes Marked at Once by 714 77 564 248 269 244 784 737 188 786 596 933 Awnings, Rolled, Eaves on Shop Fronts GE TE scccae menses heed 6602 0809s 00.049: Axle, Motor Truck, New Model Has Gears in i -- tele e a eeas sete ekae sone swe aeee Axle, Rear, of Truck Has Odd Transmission Axle Shaft, Appliance Holds Wheel When OT OR reer err er rer iter Axle Stand, Front, for — errr Axle, Wagon, as Gate Hinge.............-.-. Axmen Replaced by Guillotines in Sidewise ERUMOMEMED 2ncccccdcesccscecosseesacavess Babies, Foundling Asylum Receives on Re- WE TOD: bob tc nan soo ceed eseedanacees Baby Carriage Cover, Clips Hold in Place. Baby Carriage Screen Rolls Up............. Baby Carriage, Two Wheeled, Folds into ee rar Tee ey Carriage Windshield, English Inven- Te. cudeapecakev eae s un bee 60s On50652405 Baby Carriages, Wheelless, Popular in India Baby Carrier Hangs from Mother’s Shoulder Baby, Electric Bell Warns of Restlessness of Baby, Portable Suitcase Crib for............ Baby, Steel Frame Assists in Waiking sees Background, Queer Photographic........... 7 Bacteriology—Agitator for Mixing Liquids.. Bacteriology—Chicks Raised in Germless EE oie cee eech ssn tee tate h OR 008s 60.00 Bag, Grain, Channel on Chute Protects...... Baggage Rack over Car Hood.............. Baggage, Unclaimed Army, Piled High. Bagginess in Trouser Legs, How to Press rare err rer ere re ree Teer te Bags, Empty Cement, Baled Easily by New ee eh te ee hehe Make w ee es Bait, Live, Kept in Fresh Water........... Bait’ Pan, Insects Trapped by Raising of. Bait, Spoon, Polisher for on Boat.......... Baker Crawls In but cannot Crawl Out of Baker Models Bust of Wilson in* Almond PE cccewairy bbl skt sh beads kee aw eee O06 08 Bakery Has Housefliy on Loaf of Bread as nea nanan bend akene dee ean’ Baking Industry, Institute to Make Scientific Balgnce, Small Precision, Used for Finest te ea aaah a ide eka ae oe te 6 oe) Baler, Cotton, Three Arm Electric.......... Baler, New, for Empty Cement Bags, Works SEE nah kdb coe 0hO0 0 hss OSES 6 Range HO 8 ay Bearings, New, on Swedish Railway a ‘Bearings, Ship’s Propeller Shaft may Ball. Renrtnan, Turntable for Small Garage PE Cd see eetctkesbadhs de eheetees aunetan Ball Cartridge Shells, Simple Machinery for 7 SER ere Ball, Gochet, EO Serre Ball, Mysterious Wooden, Performs Tricks. Ball. Oddly Shattered, Taken from Crane PE ivetnrtecsdeegaterstseneeewonaconte Ball, Steel, Paper Weight Is............... Ball, Steel, Tightens Rivets in Blind Hole.. — Small Arm, Queer Rifle Range Dy <tatnbianrs +0064 66 Cand REONSSS Eke ee 7. Dragging Anchor, Darkens Eight De cvnisadedne dh atane s bhwhesn be nhond Balloon, Ignited by Lightning, Photographer (pS a PR RD a PEs rl eee ag eee Balloon, Mechanic Climbs to Adjust Valve.. Balloon, Toy, Modeled on Military Lines... Balls, Hidden Steel, Puzzle Box Locked by.. Bamboo Furniture, Artistic, How to Make.. Banana Oil Used as Alarm Signal in Mine Pt te Se ndntrhwneecheseehw ents ss conde Bananas, Bunch of, Snake Found in......... Band and Wire Stretcher for Packer....... Band, Automobile Transmission, Anvil for PE SEED in doc tnntesbesbesen ovate Band Instruments, Makeshift, Indo-Chinese EE PEE 5. 0.0 6666556540. 62008 0000960-00 Band, Rubber, as Noise Maker.............. Band Saw, Horizontal Cuts Metals by Grav- Ct Cn tenth neck wees ened then owes 6 6% ~~ Saw, Small Portable, Trees Felled and ay vets kh Oe ea heh hak on ak ee Bandits Mexican, Armored Train to Foil. Bandstand, Marble, Moved with Foundation SEE ct kenkehves nekaeiecns Kea taken Bank Employes, Bullet Proof Steel Plate POOCREEE THOME TOG. ove ccccscvaseseece Bank, oy Small Branch on Steamship “Impera DE nhins does 0600490005 bonennedee Bank Notes, Attractive, Hoarded in Java. 818 oot 793 700 . 615 902 534

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8 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Bar Bell Exerciser Adjustable in Weight.. 648 Bar, Drawn Steel, Tool for Straightening... 453 Bar, Fowls Prevented from Roosting in ON a Fe rrr en eee 792 Barber, eee aGeR, Makes Own Electric Hair EL. Sale cdnn A Aka wad Oe Sg kas BAe eee 329 Barber ‘Shop. Rocking Horses Replace Chairs 701 Barge Canal, Jersey, to Facilitate Transpor- PE Sc bentsd ntn sees CORSA a eee tee oes 0 O40 & 399 Barge, Loaded, Salvaged by Giant Hoist.... 43 Barges Used to Carry Water to Naval Sta- tion during Drought..................... 582 a of Eucalyptus Trees Yields Valuable sss Barn, “Denerete, for Mules, Coal Mining Com- ES a a ws Wikgid ba wie Kiare eOR ak Wb ok koe ala ee 197 — Raising, Farmers in Iowa Codperating oss “Rarcuncter,” Factory, Records Production RE REE ar ae 442 Barrel and Wagon Wheel, Poultry Cleaner’s Ee I IS 6c nse wie he a ae me A are 4.69 944 Barrel, Huge, Serves Variety of Drinks.... 717 Barrel, New Tumbling, Automatic Unloader PE ten ceudthessdat Aaah e ee aes es 904 828 Barrel, Poultry Silo made from............. 298 Barrel Skids from T-Rails................. 605 Barrel Support, Shelf we Used for. 939 Barrel Truck from Old Buggy............. 779 Barrel, Water, Telescope Finds Lost Bodv 762 Barrels as Underground Reservoirs Aid Ok GU Err 458 Barrow, New, Has Two Wheels Acting for Rin a a ek aca it ge a i 8 ho 381 Barrow, Small Hand, for Heavy Loads...... 782 Bascule Towers, Folding, Made for Search- ess SARA es errr Base and Leg, Jointed, on Surgeon's Tilting A an ued Actos hah os ek a aia bon ae 0.0 dm 4.0% ba we 594 Base, Naval, of Seomane may be Converted CR acecds eaten seaceenseces 98 Base Units, Sntesteatina: Jack Set Feature... 896 Baseball Grounds, Tractor Clears Away Tangle of Hedge around................. 427 Basement, Shop, Girder Dropped from Crane DD ccersscueeetedeenned a eee suane.a 669 oo Handy, Is Attachment for Barber's 4 DT nckaw cathy en kies ca ose came ann alee 6.s Basket, Shopping, on Wheels for ‘Children. 761 Baskets, es MS GON. ccsercaweriescceds 951 Baskets. Wire, Chickens in Incubator Sep- EER ROPE ST TP Oe 290 Base oe and Viol, Combined, New Instru- poe Bassinotte, Wicker, Handles Make Carrying 118 Bath, "Electric Sterilizing, for Dental Instru- ase Bath, "Siiging in Explained by Cadence of ese Bath "Vaser, and Exerciser Combined in a a i AR at ie a IR 598 Bathhouse, Outdoor, Hot Spring Supplies RRR pee era 242 Bathing in River Jordan, Physicians Forbid 439 Bathroom Appliances—Bath Brush Com- ee errr eer 274 Bathtub for Hospital Use Rolls on be oa 361 Bathtub Hammock for Hospital Patients. 564 Bathtub, Light Frame Changes into Bed. 277 Batteries, i MOS GOs cc eecnnsdepescass 793 Batteries, New Coast Defense, on Way to ays ae 732 = ey Storage, Automatic Water Filler 919 Batteries, Storage, Electric Oven Softens I i oe i era ee he nae hae A he nee oe 840 Batteries, Storage, Electrolytic Rectifier for es a es or led mh 6 re Me Oa eh tie Oe. eee 459 Battery. Makin and Repairs, Inflammable Compounds for to be Heated in Electric in tae thd wedekd Abiee kta e eb abe 345 Battery Terminals, Protecting on Bench... 444 Battery, Tilting, Germans Put in Electric i RB a eam gS cali amp negate 105 Battle Field Hotels, French to Open for thie hian 44 eb bs dando he eh adhe ee 511 Battle Planes, Remodeled, Eight Machine Guns to be Carried by..............-.000- 843 Battleship Crane Is Diving Board for Sailor 213 eee Electric, Huge Loading Cranes 803 Battleship, Fast, Comgeotes in Record Time 217 Battleship, First Built on Pacific Coast, oxen vaceh eb kba Gabe eves eedauw - 103 ae ee “Idaho” Hits Bull’s-Eye Nine Out a ack i nd Rio 6 nh de eae os ve @ w 6 531 Battleship, Navy’s Largest, Launched....... 912 Battleships and Cruisers, British, to Have Armchairs for Men Off Duty............. 175 Battleships, Electric, Speedy and High Pow- EE Sa eAdai ants Han O6 ad 46's eae we ane ees 886 Battleships, Visiting Japanese, Create Inter- Ce Oe GIS. bcc cccupcsccadecctvcs 548 Bay Tree, Felled, Living Shoots of Make At- tractive Garden Seat......cccccsccsccccece 748 Beach, Ocean, Life Lines on Securely ce Vtinttdeicdttaecvbaectdndweweee 550 Beach, Samuel W.: Submarines Tracked by Wireless......... 527 The Warship’s Wireless.................. 231 Beacons on English Landing Fields to Guide PE Mat De onc BAS Gas. 0-4-0 60:4 aa wee an 188 “Heagena,” Wireless, may Replace Light- EL <i ACh hia ah Ate wa de Oe ae @ Od et 484 Beads, pane, and Silver Make New Umbrella DT CtCnd sash in a dbs s Ce ae 6 eee wneeoan 275 Beads, Seeds 0 Serre 795 Beak, = Pelican Gets Food from Fish- 92 ee er ee eee eae 1 Beans, "Blight Free, Produced by Planting i Lien d eee tebe hee tack hae eee + 358 Beans, Odd Machine Separates from Mud. 853 Bearing, Crane, Oddly Shattered Ball Taken tt Aten hin biine debe Noes 4abe saa aoe bk 700 Bearing” Liners, DU eae? 453 Bearin Auto Engine, Machine Quickly Burn shes SE er rr eae ee ee 897 Bearings, Crankshaft, Boring Machine for.. 610 Beater, Wooden, Twirled between Hands. 914 ~——. avenenes. Yield Large Returns to 2 ie aaa sod Gum aG es Keke we banda de 717 — Folding, and Chair Combined, How to 133 Bed, Light Frame Makes of re 277 Bed = ming Old, Makes Pump Screen....... 792 Bedroom, lectric Candlestick for.......... 915 Bedroom Lamp, Broken Doll Makes......... 466 Beehives, American, Rare Sugar Found in.. 224 Beer, Intercepted, Runs down Suburban “oie Net eG he has kdb POE Oe 6 Chk Kis 08 8 511 Bees, Motor Truck Moves from Field to _. renee ee grate aoe aid 602 Bees Provided with Water.................. 609 Bees Spend Winter on Root of Office Build- see Beetles, Japanese, New Jersey Uses Chinese Ring Necked Pheasants to Fight........ 16 —— Two, Church in Noutashy Village s80 Belfry, Historic, Lexington Town Common see Bells Annunciator, Turning of Door Knob ese Bell, Bottle, Birds Scared from Fruit by. 798 Bell, Electric, Gives Alarm when Baby Be- mages a, en a 306 Bell, Light Rays Ring; Sound Waves Run Car 187 Bell Warns Typist of Error on Dictating TERA SRE I eee Reece 652 Bell, Wireless Alarm, Gives Ship Operator DE Kccharbsr chested cebokeeenete sedan een 706 Bellows for Cleaning Furnace.............. 621 Belt, Concrete, Placed Around Chimney to OD BND oo wks cnscenaes cbeseseceses 87 Belt, Drip, Chimney Leaks Prevented by... 287 Belting, Machine, Rawhide and Tanned I CE ncaa cd abe db 6006606006 b0200 39 Belts, Old, How to Patch..........-.-0005:. 782 Belts, Old ay ay for ies Chemical Baths Make New........ccecececsscvcces 416 Bench, Gonerete "“Gstagonal. on Stillwater College bbe en éob-abee ene bs oye ebneeos 586 Bench otor Driven Saw, Has Tilting Arbor 843 Bench or Table, Repair, Battery Terminals De NOE oc cc cee at euarbuseccnzece 444 Bench, Shop, Electric Lighter for Gasoline 8a apart lig «ane aia acoe O67 Bench Stop, Adjustable, Hinge Forms. - 624 Bench Top, How to Keep Oil Stove ks 444 Bench Vise and Hand Drill Form Drill Press 474 ~~ ' Vise, New, Pistons Handled Quickly s09 ee ea hee oe ook inh Sas @ Oe ed eee ee Bench Vise, SE, Bs nc dsconasanes eee ae Benches, Park, Face Away from Paths...... 102 Benches, Reinforced Concrete, as Safety Isles in New Jersey City.........+e-see05- 67 Benzene, Important Vegetable Acids Ob- Dt CE caccncded <ondS paar eGetarvecs 688 pa Stain on Wringer Rolls Removed ass Ee buisus coeebensbvedbeacrbied ses ehaees

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oe wy ei J | ~@e@ ceo asocodwkdr»» O8W MW BL QAUNAa ws Fon SSE eek ESE rrllleerlU e245 2 82 @ MO 3-3 DD 0 POPULAR MECHANICS INDEX, VOLUME XXNXIII, Benzol, Alcohol, and Fusel Oil Mixture as ook od ke ae ee ee eens Berry ee Tubes for Picker’s Hands 631 & Sf See ier arr 98 Berths, Upper and Lower, Touring Aero- Pe -erecen etch take beet ae eek keane 184 Bibles, Geotety Prints Thousands for Blind. 851 Bicycle, Emergency Repair for............. 944 a Newest, Has Seat over Steering Col- eee Bievcle,” oe. Grindstone Frame Made from 489 Bicycle Padlocked to Sailor Through Entire . “S&S REO ee eee 16 Bieycle Parcel Carrier and Stand Combined 479 Bicycle Tire Filler, Old Hose as............. 796 Bicycle Tires, Scraps of Rubber Make Punc- Oe 2a eS are 311 Bicycle, Tricycle Made into................. 795 Bicycle, Windmill Sign Made from......... 929 Billiard Table, Miniature, Built in Perfect E05 tame £0.0:60,00 0's hoe Oe eam OMe aS O 280 Bin, Huge Concrete Storage for Coal, at WtSOR, POMMOTIVERIR 2 noc ccc ccicvsccvecs 428 Binder for Ski, Toe Strap Makes........... 159 Binder, Noncracking Glue for.............. 773 Biplane Glider, Toy, Flown like Kite........ 528 Bird Cage, Japanese Umbrella Catches PE Ce. Leeks et ce eee sabia hice eaeres 466 bird House, Dead Tree Converted into...... 749 Bird Houses, Some Artistic................ 475 ~ ae Fireworks Bombardment Rids ane Bisés —American Eagle Threatened by Ex- DE Sich nurs hea ss caneee cab bases aces 829 Birds—New Zealanders Experiment with Oe rarer rrr rere 212 Birds, Protected Feeding Boxes for......... 143 Birds, Refuge for Planned on Helgoland... 98 Birés, Scaring from Frult.......ccccscsces 798 Birds—2,500 Acre Aviary, Chicago to Have 87 —_—. Wicker Cages for Suspended from 48 Birth of_an Atom, by Ro = D. Rusk, M. A. 676 “3it for Boring Large aaa 925 3it of Tobacco Pipe, Rubbing with Graphite rear 157 Blade, Comb with, for Man’s Hair Cut..... 915 Blade, Razor, for Cleaning Serr 633 Blades, Broken, Hacksaw Frame Uses...... 471 Blades of Ceiling Fans, Hinges Permit Fold- I stg Sect ho da nd dn ass in Ae OO, lS Ta A al 520 Blades, Safety Razor, Made into Pencil I haces as is hae rea eee eke wa ean 6 155 Blancher, Peanut, Replaces Human Labor.. 397 Blast, Hot Air, — Curling Machine Uses.. 815 Blast Lamp, Nasal Spray Forms............ 635 Blasting, Rock, Hydraulic Machine for..... 251 Blight Free Beans, Old Seed Produce....... 358 Blind Girls Make Books for Blind Soldiers. . 571 Blind Hole, Tight Rivet for................ 15 Blind, Society Prints Thousands of Bibles 851 SRS ae NY NE aE pb Blizzard Brings Disasters on Atlantic Coast 518 Block, Aerial Connector, How to Make...... 465 Block, Wooden, Carries Name from Mon- jf ROE. aan 696 Blocks, Glazed Tile, in 12 Colors for Chil- IE: deal Telia, & BA. oes wenn. wa aa Kec deat Aik Oe oo 440 Blood Movements, Camera and High Power i 6 ik na eee en sidigmeed a 328 “go Tests, Racial, Suggest Dual Origin of ose Blotter Attachment for Wrist Is Time Saver 584 Blower, Portable Electric, Cools Under- Se pbnctnnksseadaenstodbehaens 88 Blower Units, Portable, New Heating System ER iG hci Wee ate crea eee nae 913 Blueprint Chart, Engineer’s Personal Rec- et a sas Jéas ua esd aa dened ease ° 844 Blueprint Paper, Sensitizing Device for..... 140 Blueprints, Carbon Paper Makes........... 624 Blueprints Used by Engineers to Give In- eS Oe IO. ans ccccvcccvescecw ees 544 Blueprints, Waterproofing ................. 768 Blu Precipitous, Conerete Stairway up in Pittsburgh ee ee ee ay earn 587 Board, Bread, Sanitary Waxed Paper....... 302 Board, Ironing, Wer CeeGet FOP... cccccccccs 773 Boards, Enameled Steel Drain to Cover a A ee rr eee 914 — in Canal Prevent Springtime Ice 361 Boat, Deck Winch Driven by Main Engine 89 Boat Duck, Motorcycle Sidecar Makes..... 42 1920 Boat, Fishing, S — Bait Polisher on....... Boat for Small Boat, Ice, Auto w ns Close Race with...... Boat Key, Core AGROMOS GD. oc ccccscsseces 4 Boat Landings, Park's, Blend with Scenery.. Boat—Surf Sailing in Singhalese Outrigger Boat, Tire Chain Hold Boat, Torpedo, One Man Crew of........... Boats, Danish, Gather Stones from Ocean DEL. ben eeesuhneresc4eneesesnbewass eee av emenees Built with Twin Cylinder inet eeahed bewkekenee 6 Boats—Glimpses of British and German CE ck 66k EOE NHEES SER O Seo Boats, Guillotines Launching o Boats, Passenger, British Business Men Use ee i TT ee eee Boats, Sidewheel, British Use for Mine PD 0. 566440504 chdhO 0 60NMS ORES BESS Boats. MSidewheel, for Children in Isle of t Boats. Six, Western Shipyard Launches in One Day Ee ree ee ree eer re Boats, Small, Hand Driven Propeller for.... Boats, Small, Simple Indian Anchor for..... ~~ to Chase Hurricanes, Weather Bureau GE cece eee eee eseeeesedesesseesesesesene Beptowaty's Chair Adapted for Use with Air tt «-cackedndala keeeieksases eden eh dae Bobsled, Pad with Straw for Sleigh Ride... Body Heat, Enemy’s, Electric Sentinel De- MT eee TT eT TT TLE Te TT Te Body, Lost, Nail Keg Water Telescope Finds SeOeree, BOOee, CRI BOs oc ccccsccvsssccs 7 Boiler, Exploding, Falls into Bunkhouse... Boiler, Novel High Pressure, has Rotating Ce. HR Sctcerensncbieabekekeneouns Boiler, Old, Makes Stump Burner........... Boiler Scale, Removing with Steam......... “er re Crew of Exploding Locomotive ee Boiler. Steam, Joint Quickly Replaced...... Boiler Tubes, Fence Posts Made from...... Boiler Tubes Measured While Hot with Iron DEE Scenes sd sadnccwwash Wanhene bbae bods e 4 Boilers, Copper, Reinforced Bottom for..... Boilers, Fire Engine, Gas Burning Heaters Boilers, Range, Pipe Connections on....... Boll Weevil, Bronze Statue Honors Boll Weevil on Cotton Plants, Engine Blows ee DO Me. cavciceas eednathe heb nee Bolt, Threadless, for Ships Has Wedge In- i ke al eevee eh eceekebayecaw wee Bolts, How to ‘Make cans vebhhetnesiganteaeun Bolts, Lathe Dog for Turning.............. Bomb, Depth, Stills Troubled Waters....... Bombardment of Fireworks Rids City of EE pwitnmhh cn.ae ae wowe Renee ke we we Bomber, American, SD st odivé cane ded on add 6 ken we wes Bombs Impractical in Fighting Forest Fires Bond, S.: Where the Earth Collapses. Gi edin ee sewers Bookcase, Serving Table Made from Bookrack, Serving Table Made from........ Books, Braille System, Blind Girls Make for pg area yg lier agian 5 yea Bookshelf, Floor Lamp Combined with..... Bookshelves, Table Leaves Used for....... Booth Has Adjustable 0 rere ae 9 Booth, Telephone, Rests on Wall Brackets. Bootleggers and Clandestine Stills Over- “2 — f° |p eye naeeianEs Boots, Fireman’s, Nonskid Chains for....... Border, Mexican, Dodging Prohibition along, by John Edwin i dihih vce keine Salm ob B48 68 Borders, White, on Photo Prints Borer for Crankshaft Bearings Borough, Brooklyn, Big Pt Sn Scandrekecabb debates Goide as Bottle Bell, Birds Scared from Fruit by. Bottle Capper for Household Use........... Bottle Caps on Shoe Prevent Slipping...... Bottle, Dried Out Corks for Renewed with I CE ian ede ai bid oe bebe de oR 4S wa Bottle for Mucilage Has Push Valve on Top Bottle, Funnel Attached to Neck of Bottle, Glue, Spool Stopper for............. Bottle, Hall Lamp Made from.............. Bottle, Low Mouthed, Envelope Moistener ca sag chek Gnd6awhds ot eead ned oe ee ee eee ewes Improvements , Lighter than Cork..... 2 311 328

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10 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Bottle Stopper, Sanitary, of Glass, New In- vention oars Washer, Mechanical, nin Boudoir Table Has Many Uses Bow, Violin, Wire Clamp Holds Beginner's in Place at ~~ Huge, Marks Entrance to Maine ar Box, aes from Log Box for Drills, Fuse Casing as Box Girder, Ship’s Keel, Tunnel for Pipe System nee. Oval, Houses Water Meter and Curb Box ‘Packer, Band and Wire Stretcher for. Box, Puzzle, Hidden Steel Balls Lock Box. Shoe Polish, Thousand Dollars for De- vice to Open Box, Tool. Hingeless Cover for Boxes and Crates, Heavy, Webbing antbes Urged for Boxes, Cardboard, Chicks Shipped in Boxes, Feeding. for Bird Boxes, Rubber Hose Scraps Protect Ropes on -— Well Spaced Nails Make More Dur- able Boxes, Window, Brackets Fasten Boxing Practice, Ring for Boy, Belgian, Atlantic Crossed Five Times i Mi wwctat ian tucg<ans on 4oe4 5% Boy Scouts of San Francisco ere erate in Fire Department First Aid Work ~—. re Directions to for Making Com- Boy, “Small, Light Surf Boat for Boy, Western, Builds Ship and Aeroplane Models Boycott, Chinese of Japanese Goods, barrasses American Oil Company Boys, British Air Service Trains as Me- chanics Beye. Grammar School, Make Furniture and oys Brace Bit for Boring Circular Holes Brace, Buggy Top, ire Stretcher Made of. Bracket, Cooking, Wire Makes on Gas Jet.. Bracket, Swinging. for Flowerpots Brackets, Gas, Electric Light Made from 585 Brackets, Shelf, Used for Barrel Support... ‘ Brackets, Wall, Telephone Booth Rests on.. Brackets, Window Boxes Fastened with.... Brake, Air, Train Pipe for Has Automatic Coupling Brake Lining, Automobile, Dirt Gathers in Open Gap of Brake Lining, Scraps of Utilized Bran Mash, Poison, for Grasshoppers Brands, Cattle, Scheme Assures Perpetual Supply of Brass Diving Suit, Rigid, Helps in Breaking Depth Record Brass Rules, Printer’s, in Interlocking Form Brass, Screw Holes for Carpentrv Brass Tubing, How to Make Smaller Brass Turning, Chip Guard for Brass Used to Protect Telephone from Lightning Brazing Flux, Container for Brazing, Potato Keeps Metal Cool during... Bread Board, Sanitary Waxed Paper Bread, Incubator for Raising Bread Making, Institute to Make Scientific. Breakwater fooring Devices of Iron and Concrete 7. Carbon Dioxide in, Measures Work Breather for Four Cylinder Engine, Necessary Breather Tubes, Funnel Has Breeze for Movies, Airplane Propeller on Auto Produces ... Brick Building is Frame Residence’s Pedestal Brick Tea, Oriental Countries Receive Brick Wall, Fragments of Flywheel Shatter Bricks, Clinker, and Cobblestones, Artistic Gateposts Made of Bricks, Old, Pulverized for Road Making... = Carryall, Chicago’s Has Capacity Delage, Big, Five Months Each Year aint Bridge, Chicago, Two Huge Cofferdams for. Britee. Cofferdam, Old Track Rails Used to u Bridge Floors, Combine Wood and Asphalt in 2 Bridge, Girder Averts Truck’s Plunge from. Bridge, with Span of 300 Feet, Chi- cago Ha Bridge, Massachusetts, Quicksands Hamper Building of merece. Modern Steel, Has Large Amount of 0o Bridge, New Suspension, Snake River Bridge, Old Iron, Concrete Arches Restore. . Bridge over Niagara River Repaired Bridge, Pipe Sprinkler on Eliminates Water- ing Cart Bridge, Ponderous, Moved Eighteen Feet.... Bridge, Railroad’s Name on Assists Motorists Fridge, Rustic, Withstands Blow from Tree — “Suicide,” in Chicago Park Torn Bete. Suspension, Planned to Cross Detroit ver Bridge Takes Voyage in Atlantic Basin Bridges and Platforms, Wharf’s Capacity Increased by Bridges, Old, Wwoealneanee of, Remedied by New St tudy a under Pressure for Peanuts in Spans Cafion of Bristles, Fewer and Differently Arranged, New Toothbrush Has Bristles, One Row of on Nailbrush Brittin, F. L.: Human Nerves Act as Wireless Antenne 7 Broiler, Electric, for Lunch Room Use Bronsdon, ; The Desperate Gamble Brooks, Mountain, Stocking for Anglers, by Broom Handle and Wire Netting Make - Chimney Cleaner Broom Handle Repair for Bicycle Broom Handles, Folding Table from Broom, Spring Clamp Checks Wearing on One Side Brush for Nails has One Row of Bristles... — Homemade, for Cleaning Metal Sur- ace Brush, Hook Holds Upright in Pail Brush, Nail, Light Fixture Holds for One Armed Man Brush, Shoe, Mud Scraper on Brush, Wire, Removing Carbon with Brush Work, Ruler for Brushes, Artist’ s, How to Keep Clean. Bubbles, Soap, Science Preserves Long in Surface Tension Study Bubbles, Soap, That do Not Burst. Bucket, ao © with Bottom Door Speeds Concrete Wor Buckles, Holes and Loops Missing from New Frictionless Harness Bucksaw, Lever Tightener for si Buckwheat, Tombstones in Rural Cemetery Hidden by os Lathe for Tires Runs on Ball Bear- ngs Fitti Bugey, "61a, Barrel Truck Made from Buggy Spring and Pine Device Recover Tools from Deep Well Buggy Tire Puller, Homemade Buggy Top Brace Wire Stretcher Bugs, Potato, New Machine Exterminates. Builders, Home, Hints for re Apartment, Split, Whirled, and Re- ocat Building, Country School, Ideal Plans Ma- terialized in Bubeing, Four Story Office, Occupies Small Building love. Soctent. London’s First Sky- scraper Vio Building, Millicg Dollar, Employes Building, New Structure Put Up Around Old Building, Office and Laboratory, Detroit Auto Concern Builds Building Paper on Subfloor Keeps Out Cold Building Site Level, Electric Sand Pump Used to Raise Firm Erects Fr .

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he. Oe Oe enw sanwe 91

Bulb Operated Skirt Marker for Home NE ns ao bea wie aad Wane wae o Bull in Treadmill Runs Milking Machines... Bullet Proof Glass Stops Shots at Distance Si en RE, os acne ocReN On ee denenses eee Bullets, Hollow, How to Make.............. Bull's-Eye, Battleship “Idaho” Hits Nine Out “%. 2 sk fe ere Bumper and Step Combined for Delivery Car Bumper, Auto, Serves as Jack and Lock.... Bumpers, Discarded Cue Tips Used as aero, Vertical, Protect e ear of Automo- 5 IC PS ara mares . oh . tases. Bunkhouse, Exploding Bolier Fails into. ||. Buoys, Five Ton Concrete, es eee eee 5 Oa oe eFigure Supoeneny. John Barleycorn Central Oe pad cdae Odeo Cbs Kb oH RO Oc AER Burlap or Canvas, Sowed on at Kingston, Grass Seed “tor Lawn ee Burner, Stump, Old Boiler Makes........... Bus, Big Motor, Finished like De Luxe Street Car ee Bus Top, Seats on Have Folding Rain Shields Bushes, Common, Spread Fungus Destruc- ee en a do Keke chdteuce ceed n was Bushing Reamers,. Improvised.............. Business Letter, Best, Handsome Trophy for , . SS Seen aeneney tS ea aes Business Letters, Ringlike Device Creases.. Busses, Larger Motor. for London Streets... Busses, New York, Have Rainproof Covers Pcs vei es patsebadhaeewene as Bust of Pres. Wilson, Baker Models in Al- re hci eth bagw Ra KERR MMR ORES ewan Butcher Shop Chopping Block, Concrete and SS GP ED Ge cccccnbasndeudcaseoecs Butcher Shop, Mechanical Salesman Crowds Butter, Cutting Machine for Print of....... Butter, Machine Cuts and Serves as Needed ~~ Scale, Nonrusting, Operates in Oil Button, Service. Fastened on Coat.......... Buttonholes, Electric Awl Marks Hundred RAR reer y eee Buttons re Laces, Perfect Fit of Gaiter tina Scie did the a OU 6% baie aah we acs By- Preaucts of Citrus Fruits, New Industry ‘Utilizes Culls to Make Cabbage Harvester Made from Shovel...... Cabin, Central, of Aeroplane, Four Engines ET on ceo nh noi banana causuhusrodse Heated, Ship Builds Pe ae Ris eet — a Fire Ranger Builds above Tim- a i cLtchsesdbakehhs eedeked he we ax ee Cabinet, Dentist’s, Has Swinging Drawers. Cabinet, Kitchen, Made from Old Sewing PN Gas ce ted sab ee eae baa eho ee ma Cabinet of Portable Phonograph, Valise Is Cabinet, Receiving, for Wireless, TD i 65 cu nb dmaa bak eens Boe a eea Cabinet. Shoe, Holds All Equipment......... — = Used for High Speed Potato DE Rte ehehd deeds beh cekde on ankewob ia Cable, Setanarine, New, All American, to Asia, RISE rope Cable, Submerged Induction, Steers Ships to DP ASL he dh di ceee so an 6b ee tae annaien Cadmium and Tungsten Compound Cheap ag for hg Cage. ee “Airplane Cockpit oiiied ‘with: : Cages, Steel, Railroads Use to Imprison Tramps Caissons, Concrete, for Canadian Dam Sus- PenGed from Piling... ....-cccccccccece Cake Mold, Aluminum. Has Form of Recum- IE Sha Bho tose a Bk dhy ee tl oh wae aca Calcium Arsenate Powder, Engine Blows on Weevily Cotton Plants................0.. ey Weather, Chamber of Commerce car “Club: Morgan County, Ohio, Receives Pe GE BEONUOOD. 6. ccs cssecerecsocs Caliper, Hermaphrodite, Castings Fitted to BOOMs DRTERCO WIth... .ccccceccccs Caliper, Micrometer, How to Grasp......... se ay Compressed Air, Made from Player ano ee a es POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 638 531 916 145 188 400 335 21 59 840 924 766 456 114 102 515 36 466 864 176 434 336 644 920 298 844 Calves, Triplet, Pure Bred Hereford Cow Has Cam Instead of Screw Action, Dried Fruit POON CED ockcctcden sandesssdensesessedns Cam, Printing Press, Repairing of.......... Camel Team and Auto Serve Inland Austra- Pee TE. acc ceccecccdnweseswensss<seges Camera, Amber Spectacles as Ray Filter for Camera Discovers Ancient Ruins, by Fred-

11 920 745 767 91 775 OGGR TEND oc en cc cs sbasccdvececscccesecee 502 Camera, Enlarging, Cap for..........+e5e65 798 Camera, Enlarging, How to Make.......... 305 Camera, Focusing Hood for................ 477 Camera, Photographer Lends Free for Ad- a Pry rTT TTT TTT TTT eee 747 Camera, To Steady in Wind................ 632 Campers. Vertical Sailargias, Simplifies Photo ans ME: nicuacand shlwat Os deed keeeexkedeee'e Camera Work, Portable Reflector for...... 624 Camp, Army Recuperation, Extinct Hawai- ee SD re 186 Camp, Clean Spring Water for............ 957 Gamem, Wasy CRO FOF... cccccscccccvcsces 955 Camp, Print Washer for Use in............. 949 Campaign, Antiaccident, Unusual Advertise- —~ -* | “ nea rarer rr Tree 216 Campers, Kerosene Hot Plate for, Practi- GREE TOONS ccc cvccecseccenceerteeverus 435 Campers, Table for with Drawers and Shelves Folds Compactly.............++.. 752 Camping, All Steel Folding Table for...... 115 Camping, Automobile, Fire Irons for....... 948 ane Outfit Folds into Small PD 6.6 ob owes sas rcecaesevssesseverves 114 Camping Double Boiler Made of Cans..... 798 Comes, Forest, Truck Serves as Dental Of- PE Sine a heloe hsb eRe eS Theda ake keke 564 Campus at Stillwater College, Concrete Oc- SE TOR WER, <0 5 i n.o's sccedas 5 eee aens 586 Campus, University ~ # Illinois, Has Oldest Soil Experiment Field.................+6. 415 Can, Ash, as Fire Extinguisher............. 612 Can, Garbage, with Perforated Lid for Sink 915 Can, Milk, Root Slicer Made from........... R17 Can, Tin, Makes Air Filter for Tractor..... 38 Canal Bed, Old, Is Route of Subway System 278 Canal, Boards in Prevent Springtime Ice ree ett fren 361 Canal, Cows Learn to Swim............... 64 Canal, Irrigation, Sagebrush Reinforces.... 566 Canal, Irrigation, Worms Retard Water oO ges oegnallipnie: ep ep areata 681 Canal, Jersey, to Form Last Link in Chain... 399 Canal Locks, Panama, Cause Peculiar Water DE: cc tnet esiGensevacwten Vas at boatetanes 219 Canal Maintenance, Channel Sweeper for, by Gordon P. GIORBON... 22. ccssccccccccce 757 Canal may Link Mississippi and Rio Grande 221 Canal, Panama, American Ship on Fire in, licen gaming th teeta onpestrine 574 Canal, Panama, Dedication of This Year.... 538 Canal, Panama, Tolls at to be Governed by SE nc one vandeeebeneeheee @ 99 Canal, Panama, Traffic through Increases... 547 Canal, Panama, Transport “America,” Largest Ship to Pass Through..............e+ee00% 872 Canal Zone, Good Roads to Protect and De- WL nb vbRndned 5090s she dGsesd gcd O4W eR 648 526 Canal "Sons. Panama, American Submarines Sink Blazing rae 799 Canal Zone, Panama, Has Concrete Packing DE as 03 0 dss hho bee een bas OE aeresess 79 Canal Zone, Panama, Sewer in Plugged by PND cach ensed othabai’srcaeneeaawe 62 Canal Zone, Panama, Uses Concrete Tank for eR arr 48 Candidates, en, Wives of Pool Chances i PD. bon cba dmedae tess casas béeeceks ou 99 Candle Wick “and Knife Switch, Matches PE Sl bit cen enh bars es neeeeess ee 138 Candlestick, Electric, for Bedroom....... -.. 915 Candlestick, Electric Socket for............ 593 Candy and Incidental Foods Have High Nu- Spe eer ee 88 Cane Heads Resemble Animals............. 53 Cane Parasol Latest Novelty............... 53 Canning Club Leader Uses Unusual Car.... 567 Cannon Engine Developed for American PD. s kexnsicouendts ob 40nd 0se tecease 72 Cannon, French, Ordered for American Air- SD pAstdearW edi ne etecedententeversaeeds 75 Cannon, Toy I. é5: on: 6s duntenikd men eee ial 318 Canoe Costume, Bizarre, Fashion Artists . . dun baa ede eee ak obese wed Cee oaks 657 Canoe Course, Charles River Used as by Thousands Canoe, Invention Turns into Sleeping Place Canoeist Shows His Craft Is Versatile 59 911 35

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Canoes, Frame for Painting............+... 938 Cafion of Snake River, New Suspension MPEGS BERS onc cccccccccsencescescocces 104 Canopy, Theater, Snow Fells in Storm...... 731 Cans anens Rail, Ship’s Halyards Held in. 862 Cans, le Boiler made from............- 798 Cans, uare Cornered, Detachable Spout for 276 Cans, The Houses in Montenegro Built of... 895 Cans, Tin, Ornamental Lanterns Made from 792 Cans, Tin, Simple Mouse Trap Made from 780 Canvas Held over Concrete Road with PO BONED oo cccc cc ccescescecsevencers 545 Canvas or Burlap, Grass Seed for Lawn Pe CE. sek web Ohh eb ees taeda seen hee 924 Canvas or Leather Repair for Auto Low eT Te er Te Eee ee ET re 614 Canvas Overshoes for Farmer.............. 619 Canvas Sails Replace Vanes in Odd Gearless ee ee Bits windig Gy Re Ks cae eA 332 Cap and Apron, Paper, Used for Housework 274 Cap for Enlarging Camera................. 98 =e gapare Paper, Directions for Making.. 144 Cap, Valve, Forms Pump Coupling.......... 794 Capillarity, Pump Holds Water by......... 243 Capital and Labor—Fifty Factories Gov- erned like Small Republics.............. 202 Capital, Brazilian, may Move to High Land fk a er ere ere 357 Capital, United States National, Altered American Flag Causes Near-Riot in...... 404 Capitol, National, Creed in Bronze Placed in 721 Capper, Bottle, for Household Use.......... 754 Caprifig Orchard Increases Production of EE dae haa bk CA AO Re ae owe on kom 572 Caps, Bottle, Prevent Shoe from Slipping. . 16 Caps, Paper, Show Great Resistance to Blows 184 Capstans on Steam Engines Draw Plows... 267 Car Ceilings of London Subway Coaches, Electric Signs on Flash Name of Stations PE 120s dcewbneet as wie hn as a ees hee s.0 336 Car Conductors, Suburban, Broken Insula- EE HTS Te errr eT te 702 Car, Express, Used for Both Freight and EN FO err re ere 82 Car nesty. Old, Makes Floating Dock....... 48 Car, Flat, Six Auto Chassis Shipped on..... 390 Car, Freight, Shipped by Auto Truck..... 706 Car, Gasoline, Wrecked by Broken Rail..... 654 Car, Sidewalk, Steered by Feet and Pro- Ppelled by ae EC bakes « 441 Car, Street, Permits Quick Loading........ 651 Carbide Used as Substitute for Chalk...... 135 Carbolic Acid, Concrete Tank for........... 48 Carbon Dioxide in Breath Measures Work ER Re er 815 Carbon Paper Makes Blueprints............ 624 Carbon, Remove with Wire Brush.......... 928 Carbon Remover, Atomizer Injects into REE ie Seen Rs eee a aeer 939 Carbon Remover Made from Stranded Steel AS Se re ae are 928 Carbon Tetrachloride Cleans Goggles....... 620 Carbon Trouble, Solidified Alcohol as Pre- —” SRSSRPRS ES EE ia a eager 612 Carburetor, Hot Water Bag on for Auto i iam rah de 6:8 eo 9 aia ok we Bs aha 457 carcasses, Hog, Dehaired by Rotary Mas- . SR rr ee ee Per err ee 20 card” Findin Trick, Pin Aids in. 471 Card Game Board for Invalid............... 638 Card, Show, Drying Rack for............... 614 Cardboard Boxes, Small Chickens Shipped in 891 Cardboard, Corrugated, for Spacing Wood i PT wh cbc nad.dh o¥aeua haeens 006 se 299 Cardboard Cover for Flower Stand, Flowers Kept from Freezing by................. 306 Cardboard, Heavy, Chair Seats Made from.. 140 =e Show, Collapsible Bench for Lettering Oe AE EET A Ee Pe ee Pe 124 Cards, Window Advertising, Self-Supporting 774 Cargo Aeroplanes, Larger, to Carry Mail.... 404 Cargo, Cattle Ship, Swims to Shore........ 893 Casso, Valuable Rubber, Landed at Western yr errr oer tee 44 Cargoes, Strange, from America to Far East 198 Carnival, Midwinter, Illuminated Pyramid of . ¢ 9 Perey err rer 516 Carnival, Winter, Contesting Ski Jumpers Loop the Midd ciethéadshhes denna smn 686 Carpenters Erect Bunkhouse in Record Time 400 “ears, Accurate, Screw Holes of Brass 36 Carpentry—imitation Wood ‘Inlaid Work. 944 Carpentry—Wood Binding and Forming. . 923 Carpet Beater, Mechanical, Has Rev ving DEE, ccdboendssh0s Jearerveteransepavene ues 652 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Carpet, Rag, Made at Low Cost............ Carriage, Baby, Clips Hold Cover in Place. Carriage, Baby, Electric Alarm Bell Con- PE ME winded ekeodh sus eet eiteerteeee ¥ege Carriage, Baby, Screen for...........+.454. Carriage, Baby, Windshield for Is English DEL <o Giuwheeeekeoter ee cechsekes 2% Carrier for Baby Hangs from Mother's DE ce. c bee bded Meee ERO henhabe ds sg ee Parcel, and Stand for Bicycle Com- SR, SiS othe & niaig wa ea ed ae.6 od be me Carriers, Simple, for Drawer..............+- Cree Chicago’s Bridewell, Has Capacity ee ee ee) ee ar Cars, ‘Biasias on Trestle, Fire Fighters Per- plexed ere er er Cars, Freight, Trucks on Runways Unload. Cars, Railroad, Bearing Coolers for........ Cars, Special, ‘Tanks Carried from ceeaea * Ol Sadsa Wades Mae ete nee gcse chnesdersdees Cars, Street, Wreck Law Breaking Auto.... Cart, Aeroplane, Pony Pulls Cartographers, Busy, Peace Conference of France, Carton Lunches, Dumb-Waiter Serves as - « 2a errr er Cartons, Cardboard, Chicks Shipped in Cartridge, Chalk Holder Made from........ Cartridge Fuses, Tongs of Fiber and Wood Pe SE 8. cde ete mane ee eee eee bees Cartridge, Penknife Made on. Cartridges, Hollow, How to Make.......... Case, a Has Wire Stiffoner to Pre- WOME TOOMMOMS 2c ccccec eres secccessveccee Case, Thermometer, Illuminated............ Cash Prizes, Young Republicans may Win... Cash Reward for Naval Improvement Ideas Casing, Fuse, as Box for Drills Casing, Oil Well, as Air Tank.............. Casing, Shell, Table Lamp Made from....... Casket, Cast Iron, Mystery of Antiquity.... om ro nee Loving Cup, Golfers’ “Booby” ngs Cast Iron Ware, Jammy Method of Manu- i PD cchebektea tes kG tae antes Casting, Centrifugal, Hollow Steel Objects Sf AS ee ESR eae ee Casting, SE. ‘itivhinkinkih a Wie wie hae ak bed od we oe mt Castings, Aluminum, Tested by Weight Castings, Don’t Be Afraid of................ Castings Fitted to Metal Surface with Her- TORT ORIES CREPSP 2c ccccccccccscccicses Castings, Iron, How to Increase Thickness of ME 6abescdeeeneedereccuar anaes ee Cataract, Ancient, Predecessor of Niagara Maite Pr re rrr Cataract, Pt COs cet penser kehs bees as.ekue 6 Catch, Door, Made from Strap Iron eo Pn a Scheme Assures Perpetual cate . =. Weights Change Shape of. Cattle, Lock Gate Holds Fast for Marking... Cattle Ship, Cargo of Swims, to eneee. Cave under Residence Lawn Is Garage...... Cavern, Salt Mine, Scene of Motion” Picture ee Show Cedar Chest Has Elevating Top Tray....... Cedar Timbers Found in Heart of Elm Tree. Cedar Trees, Cut All in County to Save Apple eee eee eee eee ee H SE che cin ech dt ow 600 486 Mee eee eae S Ceilin Fans, Hinges Permit Folding ve =e Sarr errr rr rTrerr rr s ‘ Ceiling, How to Catch Flies ‘on nih eae a ae Ceiling, Special Swatter Gets Flies on...... Coes. Centennial, Nebraskans Reénact History at... cece cece cece cere ceeeeeaes Celebration, " whiaaten Tercentenary, Plans for ANNOUNCE ..... cer ce cer ercereseresssere Cells, Dry Battery, How to Make tal gs tae ty dc Celluloid ay arnt Newest Swimming Aid. Celluloid, — for Mounting Small Photographs in ..... 6... ee eee cece ee neeees Cellulose and Wool Scrap Make Artificial Woo CHOOSES HSESHESESSESSESESHOSSESHHSEETEF OS

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Se Se an awe wae Se ev oor 8eo oOo wcowrn one

POPULAR MECHANICS INDEX, VOLUME XXXII1, 1920 Cement and Asbestos, Pipe and Wall Tile DP PE csc tccvssweab ees bu cateneee eee 897 Cement and Coke Make Concrete for Build- le ND 4 :0064004008 db eee seaeeegennees 903 Cement and Sea Shells, Furniture Embel- lished with Panels of ..........seceeeees 398 Cement Bags, Empty, Baled Easily by New EE ole a aa 6 ak mie a6 n.d Ae ee © 4 © 28 5% 814 Cement Bridge, Big, Floods Undermine...... 876 Cement for Cracked Stoves............0005. 313 Cement Hardening, Lime Chloride in New frre reer 692 Cement, Magnesium Chloride, Improved by rrr rer eee 112 Cement, Nails a ert 622 Cues. Rubber, Gasoline and Bits of arene ee? SE cc Cieerechattssedet ert scecntwess : Cement Sidewalk Drainage .............46. 767 Cement, Wood Ashes and White of Eggs PE nconeded nee ebecbscbes ae hnk Oe ed ewe 313 Cemetery, Rural, Wheat Hides Tombstones in 739 Census, Government, Reveals Enormous Number OF TelePROMES. ..ccccccccccesesecs 525 Census, Motorboat Takes among Florida PE: cexdkwe 62 oad bet eeOt ee cee Rae an eee bis 335 Census, Unique, Automobile Men Take...... 330 Centennial Celebration, Nebraskans Reénact TT Rear 408 Center, Irregular Round Work, Method for EE ccc Gh DR SCREARSRMAERD ARERR eS OEE 154 Center Punch, How to Hold Erect.......... 764 Ceramics Taught in Large Western Uni- EE cb nd es the et eked ened Aa eee ats 6 eee 229 Cereals, Electrocution by Machine of Insects Ot PE Sc cbt ak ear einanebe testes ees 540 Chain, Rigid, Endless Tread, Supports Trac- tor without Idler Wheels................ 86 Chet, Tile, THOUS DORE. 2. ccccccccccscccees 637 Chains and Gas Pipe, Tire Removed by..... 137 ay Double, Piping Raised from Well one Chelona New Nonskid, for Auto Truck...... 77 Chains, Nonskid, for Firemen’s Boots...... 568 a Tire, Automobile Tires Hung on for ass Chair ’and Desk, Combination, for Stenogra- en Chair "end Desk, New, Prevent Round Shoul- 219 Chair Back, Tire Tape Repair for.......... 777 ar Barbers’, Handy Basin is Attachment Mt crretecstacase 400 G8 6 Gd DROME EE OR Oe 4 aay my wana s, Adapted for Use with _ Chair, Child’s, Has Music Box Under Seat.. 281 Chair, Convertible, Equipped with Auxiliary ene err 666 Cee, Bee, COP GRMN, wien cca wescteossenes 955 Chair, New Rolling, Has Body like Closed PEE nnn 0 4668660440 She 4eNe 6Se SOD 183 Chair, Newest Automotive, Easily Operated. 370 CORBET TIOCMOE, BEG BOP. cccccccgecccccecsscs 786 Chair Slides like Drawer beneath Table Top 276 Chair with Built In Desk................. 464 Chalk and Petroleum Used to Find Small oO NG O&O RR rr Per err 454 Chalk, Carbide Used as Substitute for...... 135 Chalk Holder Made from Cartricge....... 135 Chamber of Commerce, Los Angeles, Issues PG TOHRU 6 dc doc nsewiacesenunsesas 644 Chamber of Commerce, U. S. Erects Perma- nent Home in Washington............... 110 Chandelier and Reading Lamp Combined, PIO MepOCtrte PRMCUTS 2c ccceccccsescscese 516 Channel for Warships Planned for San Fran- DE ccc ccna keen heeeedhe mas cued ea0 438 Channel Sweeper for Canal Maintenance Work, by Gordon P. Gleason.............. 757 Chapel, Valley Forge Memorial Takes Form of 49 Chapman, J. A.: The First Flight over a Peak of the RS eR ee eee 100 Charcoal Distilled from Mill Waste........ 77 ay , Zephone 2 Drive Fills Chest for, by Paul SO re ae eae 683 Chart, Blueprint, Engineer’s Personal Rec- Ce Fe is ah creed cheeses dhs 0-045 ae oo 844 Chart, Graphic, Showing Movements of Lo- comotive, Instrument Records............ 545 mee Simple, Shows Proper Soil Fertiliza- eve gees, Six Auto, Shipped on One Flat Car. 390 Chauffeur, Collapsible Repair Cradles for.. 913 Check Raising, Typewriter Prevents....... 608 Checks, Machine Prints All Items on but PE. wd cevVeet bode urea eet aeh anhees 197 13 Checks, Protecting with Red Ink........... 769 Checks, Season, in Oak Stock for Furniture, Be Oe UO 65 0c tc enegdaecepvcossnncr 407 Chef of ct York Hotel, Belgian Stowaway 1 a errr re ee 280 a a few Welding Electrode Has Coat- ees Chemical Used to Protect Movie Films from see Chemicals, Old Leather Machine Belts Made i Sn csoctectadeonsedesoeeceas bas ane 416 Chemicals Used to Fill Pores of Wood to PG. cccesrcececddonensecesovs 108 Chemist, Biological, Analyzes Successful Diet 395 Chemist, John ~ enenten College Campus to BEG. TORN GE cc scccgageccssewecsecvesus 347 Chemistry—A Nation of Electrolyte Speeds Up Electrochemical Analysis............. 504 Chemistry—New Combustible Gas from Com- TROM BERCOTIGIS 2.0 cccccivscccerececseseve 738 Chemistry—New Solvent Finds Cellulose RE. GE PUNE ss cock te cee nncons guesses 516 Chemistry—Radium Emanation Collected and Purified Replace Substance........... 29 Chemistry—Silvered Glass Utensils Substi- SUCRE GOS POR cc cccccessccaccesssce 95 a — American, Discover Secret of Soy ess Chicken Coop Attachment Adds to Truck rrr rrr 245 Chicken Coop Made from Trunk............ 455 = in Incubator, Wire Baskets Sepa- ese Chickens Raised in Bacteria Proof Incu- oat errr rrr errr Coespene, Small, Cardboard Boxes Used to 891 Chickens, Washtub Forms Home for....... 476 Chief, Maori, Model of on Exhibition....... 712 Chief of Police, Bolivian, Has Office in Pa- Ct DE ccorvsreteeweese setae deaseareeen 524 a Arabian Warrior, England En- oes Child, Allen P.: Ci ty Factory Has Artistic Roof Garden... 214 Concrete Road Job Handled on Big Scale. 569 Ultra Modern Crematory in Western City 393 Child, Balloon for Modeled on Military Lines 121 Child, Folding Theater Seat for........... 627 Child, Telegraphic Device for.............. 626 Children, Animal Keyboard Chart for Teach- Pe Pt Cn cc sc ek sete ebhek eb kened'e waa 440 i ae a — Wheeled Frame Teaches Walk DF Susanne s dees eiWaweae sawed Ga ae é 120 children ‘lave New Concrete Swimming Pool Se. Be SE bias nctsensmandenescocecs 270 Children, Ladder Made Inaccessible to...... 454 Children, Merry-Go-Round and Seesaw Com- PC <icanttbunecekneivethneeveveseee 440 Children, Play Monorail System for......... 30 Children, Shopping Basket on Wheels for.. 761 Children, Sidewalk Car for Steered by Feet PE PGs OO BE. oc ccc cesccencgacosce 441 Children Study Nature in Parks and Farms. 120 Children, Toy Tractor and Trailers for...... 41 Children, Varicolored Glazed Tile Sets for.. 440 Children, Wooden “Airplane” for Sidewalk SO ee WO COG iwi octe awh indeeeeansead® 441 Children’s Pages ...... 120, 280, 440, 600, 760, 920 Chill, How to Protect Auto Engine from.... 131 Chimes of Electric Clock Play Different Se TON He 6 6 caks Ce eseceeseseaaere 184 Chimney, Broken Iron, Shots ‘“‘Knock” Down 328 Chimney Cleaner, Wire Netting and Broom Pe CD wocanss004esh06660) 4a +80568 609 a a Factory, Mail Aeroplane Collides CY crea a bs see na ee eh hea whos ee eke oe Chimney, House, Invisible............... Chimney, Iron, Given Coat of Concrete.. Chimney Leaks, Drip Belt Prevents..... : Chimney Pipe Hole, Pail Forms........... Chimney Soot, Old Gold Dye Made from.

China, roken, How to Mend with Milk. 466 Chip Guard for Brass Turning............. 462 Chisel, Cold, Round Holes Made with....... 607 Chloride, Lime, New Form of Hastens Ce- ment Hardening er rR er ra 692 Chloride of Lime, Rats Scared Away by 955 Chloropicrine, Poison Gas, Used as Disin- DL eis tan dee ee B ees oO 04N 624s vee meee 4 725 Chopping Block, Concrete and Steel Form i it ina tata seas sh egeereate ys eeee 907 Chuck, Square Wire Held ir.............4+. 619 Chuck Used on Drill Press..............4465 777 Church, Congregation Builds with Cheap EN Sic ba vedaewnd joe ee te es pe bebOs Cause

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14 Church, Mormon, Built Near Honolulu..... 178 Church Service, Monster Sign on Auto Truck Pe: Kcitnaweteren b4h00-6 ONC ke eK ORES 906 Church with Stucco Covering Looks like dtc eadén ds neehe ee ks 05 49.400 ue Oh ae oe 239 Church with Two Belfries, Kentucky Vil- PE Cie ktanesghekeekeenesene nedewe 190 Churn, Motor Driven Dash Paddle for...... 914 Churn Parts, Grinder Made from........... 764 a Grain, Channel on Protects Grain o23 cider “Press Parts Make Bushing and Gear 198 Cigar Ash Used for Silver Polish........ -- 462 Cigar Cutting, Notches Take Place of...... 456 Cigar, Hint for Holding to Prevent Accident 769 Cinder Piles Enforce Careful Driving at Dl : Kcice shpat edidewekd aeencecsbeneve 621 Cinders in Cement Hold Nails.............. 622 Circle, Laying Out with Square............ 474 Circle, Segment of, Boring and Calipering... 927 Circles, Walking in, Blindfolded Persons Upset Old Notions about................. 416 Circuit, Signal, for Milk Ticket............. 627 Circuits, Concealed, Faults in.............. 765 Circuits for Three Way Switches........... 955 Circulation, Post War Jump in of Chicago’s Pe PE «oc nen 6 conb eps eeseetenee ee 429 Circumference Gauge, Piston Ring Diameter Ps eens CORY RRAR ORO HS Odin Ode 419 Circus Elephant Gives Children Ride in DE: cecctbersneheseneceseusancs sides 920 Cistern, Liquid Manure, Stores Fertilizer.... 869 ae ~~ S ae Plan Automatic Telephone _ ene Cities, ros, Air Photographs Can Find. 80 City, ‘Ancient, of Far East, French Restor- ing, by Francis Dickie................... 423 «Span of 300, Fe Building Lift Bridge with ks 2 aera 29 ty Chicago's. 5 Decked Bridge Has WD COUORNMR, 0 cc eccccccccscesses 92 city I Tatum nation, Duplex Street Lamps Cut 871 ht dnd eRe a Why hw ice Ce 4A a0’ o City, aE Electrical Toy Represents.. 573 aa | Moved Aside for Riches beneath It, ‘by I PET §21 City, New Jersey, Has Reinforced Concrete eotnty DE dct taceunesuadarweeds¥be ewe ws 57 City Operates Street Car on Abandoned Line 44 “= P pelpemamaated of Ottawa to Be Gar- 501 8 Pe eS City Lies Zoning System of Chicago Looks SP ccp¢ben dhe et 0006504008 bad eesae 890 City Safe, Loose Screw Jams Locking Gearof 81 City—San Francisco Has Park Boat Land- ings That Blend with Scenery........... 78 City Street Spouts Fire as Gas Main Leaks. 871 Civic Center, Denver, Greek Theater Part of 612 Te POD 5 cLdwe eects ese aceeds 586, 748, 908 Clamp and Centering Mechanism, Drill Car- i jenna ceed hens ese os 68 OO ws ee ES 711 Clamp for Drying Straw Hat.............. 932 Clamp for Electric Light Cord............. 629 Clamp Holds and Registers Cloth on Tail- EE Stil cin a dig Bie we dhea's © etabeed ee © oi 360 Clamp, Hose, Michigan Fireman Devises... 694 Clamp or Vise, Pneumatic................. 446 Clamp, Rugs Held by for Beating........... 785 Clamp, Spring, Prevents Wearing of Broom | EERE Ea ere 435 Clamp, Wire, Beginner’s Violin Bow Held in ~ aS sere 816 Clamp, ringer, Vise Made from.......... 792 Clams, i 2 ge —~ Tossed upon Shores of Long Island................... 960 Ceeeeee Jail brrider Is for Women Pris- 0 clay, ‘Heavy, Dynamite Forms Large “Jugs” ase Cleaner, Chimney, Netting and Broom Han- ED oe ais awn adiahe mS Win We oN ob a AeA 609 a Vacuum, Playing Housekeeping oe: PE. Gene cecet acd PeneReeeeORe UbO0C eb EC COS Cleaner, Windshield, Guckiy MMR sovecese 637 Cleaners, Electrical, Portable Seif. Winding Pe rrr ee 282 Cleansers—Harmless Fluid Removes Rust and Lime Stains from Porcelain, Marble, etc.. 111 Cliff, Elevator through in Yosemite Park, Hoists Guests to Hotel.............-0005- 482 Climate, Colder, Increases Value of Pelts... 207 Climate, Surveys of Made Rd Aeroplanes... 720 Climber, Daring, Rescues Flag from Pole.. 92 Clinker Bricks and Cobblestones, Artistic Gateposts Made of............. ivetdekaune POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Cipometer, Lights on Check Aeroplane’s ase Shp. Metal, Handle for Draftsman’s Scale.. 765 Cli <a Electric, European Barber Makes ane clips,’ Baby Carriage Cover Held in Place s00 Ctipe Hold Bearing Liners.................. 453 — Alarm, Photo Prints Timed by Sound se Clock, Alarm, String Shuts Off Signal of. 466 Clock ag Electric, Play Different Tunes 0. EO Ee ee eae 184 Clock, Flashlight Bulb Illuminates......... 785 Clock, | Lanternlike, Turning Leaves of Show ore SCHOCCCESCHSSHESHOSESESEOHESESE SESE ESTEE EESEO®S ie Clock Starts Phonograph’s Alarm.......... 220 Clock, 24 Hour, London Station Has........ 222 Clock, Wall, Trench Helmet Made into...... 381 Clockwork, Doll Made to Walk by Means of 121 Clockwork Used to Run Stippling Pen..... 504 Closet, Hanging Hat Box for.............. 593 Closet, Wall, for Ironing Board............ 773 Cloth, Clamp Holds and Registers on Tail- sok Jeter ee 360 Cloth, Emery, Using on Round Surfaces... 776 Clothes Drier for Small Articles........... 638 Clothes Hamper, White Enamel, “Has Tilting Basket and Drawer..............-eeese00: 255 Clothes Hanger as Necktie Rack........... 634 Clothes Hanger, Ingenious, Held Near Ceil- Mi. Se SGEU deed be Oks ode & ded & 04-6 wo He 566 Clothes Hangers, Empty Spools as......... 450 Clothes, Lightweight, Snap Holds on Hanger 632 Clothes, Old, Worn by Club, by H. H. Wind- ; Cnet Beeb ehbs Oh eho eke hakn ses eee sens ees 1 Clothesline Operated from Window......... 763 Clothespin as Insulating Pliers............. 620 Clothespin, Grooved Jaws of Hold Clothes ERS er 35 Clothespin, Reaching Device Made from. +e Clothespin Used as Vise................... 132 Clothing History, Paris Museum of Cos- EY 6.0 b cardn.wwe baw we do bGlba nee 00 894 Clothing, Machine Prints Laundry Marks on 111 Clothing Manufacturer’s, New York’s, to Move to New Location................... 438 Clothing, Men's, Short Silk Fibers Used to sie taike higaredeendekeeme «6 73 Clothing, Nondescript, Bolshevist Army Has 556 Clothing Rack, Foldable, for Traveling.. 919 Cloud Height, How to Observe without In- PEPE SkC Reade oO ars r da sene edge eb ee. « 151 a Passage of Aeroplane through Air 96 Clouds oad Fog Hinder Aerial Map Makers Oe RE. cwcecstoged ouseaareany cadsse cae 484 Club, Calf, of Morgan County, Ohio, Receives re Bred DP cridhestdeawen eeans 920 Club, Canning, Remarkabiy Equipped Auto RE WP I GE a 0 co 6nn 50604600 es eceese 567 Club, Flying, to Promote Two Aerial Races Pe shcctthadVeeeakabaseseaaeuns 582 Club, French Aero, Offers Prize for Neces- sary Aeroplane Attachment.............. 58 oo Gepanseed to Wear Old Clothes, by H. iT SN ence deh ies dr a ta aie & da os Hig Acme Clutch, Es eepteny Cone, Remedy for Slip- oan cites, ° a eeneanneee, on Cold Bend Testing PS ica ntees Kedhce we enees Pad 112 Clutch, ivan, Driver Given Better Control of Motor WE téadans 60640065445 5bk ba den see 918 Coach, Eastern Football, Luminous Ba!l Adopted a wes Sandee eheteeeans bGheN 645 445 742 — London, Have Many Doors and No ans SO nos cctneoueciesto4 thee wees 66eoe00 0 Coal, re Rrtificial Fuel Closely Resembles..... 654 Coal —. ——— Huge, Built for Railroad nina 6 6s 6 o 6 Cen O86 2 HCE Ob 0 00 389 Coal, Sricad ‘of Tested by Spiral Tool..... 118 Coal Cars, Blazing on Trestle, Fire Fight- ers Perplexed MS 5 oe win 6000 6Gbhe es 0é2%% 854 Coal Deposits, Spitzbergen’ s, “Mined Under IE cn dt wns ce Oal db ne reg neseepwesee 682 Coal Famine, French Facing, Try Crbetientce 76 Coal Famine, “Hamburger” Fuel Aids in. 335 Coal Fields, Australian, Electric Plant on.. 806 Coal Fields in weevuyeeee East Africa, Brit- ish Company to Work..........-seeeeees 32 Coal, aay Asks Belgium to Convert into ess a hd ee aan wie Coal Mine Ex losions, Rock Dust to Stop... 228 Coal Mine, ottish, Concrete Headgear Planned | Bnet eae eaneeiane rege is aoe Oe

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POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 os Ff alas Company Has Concrete Barn Sn parc ceesads éoestbeeaeeneewenhsae cmt. S out , eee Vessel Shifted to in Few ee Coal gy ‘New, Produces and Consumes Ttes Ownm Gas GOE COG. ..cccccccesiesesers Coal Storage Bin, Huge Concrete, at Wilson PRED. cacccbucaseebaenwasheuneds a0 4 Coal Substitute in Canadian Peat Bogs..... Coast, Atlantic, Blizzard Brings Disasters to Coast, California, Visiting Japanese Cruis- - ers Arouse Interest on............ atessecs Coast Defense Gun, Successful Railroad BE BE és wadoeneuase 200s neeneeseesaeee Coast Defense Plans Disappearing Search- light Towers AGvocated ....cccccccccccseccs Coast Gun, Big, New, on Way to Pacific DEE: nanidin Cheon seeded babes eeeel ewe Coast Patrol, American Aerial Inaugurated Coasting, Saddle Crosspiece Makes Exciting Consting without -@ BERL... cccccccccccccsee 4 Coastline, Broken, of Southern Asia Has 197 Made Expert Shipbuilders of Singhalese. 67 CORE Ge TE DOOR. 6 occ asccgeccesseccece 949 Coat Hanger Rail Made from Srocgeaaen. « 137 oat Hooks as Hanger for Breast Drill. 127 oat, How to Fasten Service Button to. 456 Cobblestones and Clinker Bricks, Artistic Gateposts Made of.......... ieens ooo ee . 749 Codel, Martin: City Moved Aside for Riches beneath It... 521 Codling, Moth Larve, Spraying Removes CO PD GOD 6.6 0 0 ns 40066 2 db0resedescer 578 Coffee Percolator Has Two Aluminum Con- >? SS Oe ar eee 762 Coffee Plantation Has Concrete Drying ere are er er rer 54 Coffee Urn, New, Has Felt Filters......... 384 Cofferdam, Old Track Rails Used to Build.. 876 — Special, Saves Drydocking of 948 Cofferdams, Two Huge, Built for Chicago 9s Coit spring, Single, Resilient Shaft Coupling 96 aan Operate Gasoline Vending Machines.. 565 Coke and Gas, New Coal Range Produces i SE 0.00 645 6c0 0s os Ghd BOs Ome's o HO 2 Coke, Concrete for Building Houses Made Ni: aka re Regnedener ayaa: gerne Rit a 903 Coke Mine on Trolley Line, Commuters Find 380 Coke Oven, Modern, Efficiency of........... 430 Collection Box, English, German Sea Mine Dt Pi stahtbibrateks Keck ee ekeeneeeheanes 198 College and Factory Combine to Teach En- SEE oc 6 ctRenn ad cod howiegetbeke eeu nes 78 College Campus, Famous Chemist's Home to be Moved Diba.0 60s s nse he sade Gene aed do 347 College, Eastern, Contesting Ski Jumpers i Te ME. cats cusneamedd hace o.0's-< 686 College, Eastern, Now Teaches Aviation.... 38 enese Song, New, may Win $50 Prize.... 480 Coll ose. Ss epee Courses Offered Farm ass Colleges, “118 American, Teach Highway En- 938 Collision, b Diner Overturned by Freight Car 427 Color Cards of American Dyes Adopted as DE - tes nteniiee ed thedons nba s daedte « 505 Color Effects on Lantern Slides, New Proc- yD. cin vio 0 e6nge ss 00d S CRETE OO Ran vODE te 66 a eee in Telescope Show Contrast- DE ccon Gav abwoebs e6hh ee Kees neu <¢ 246 Color Study, New Method Measures Exact naar eer 529 Colorado, Prehistoric Indian Structure Un- et ee ae 122 Colors, Natural, Movies in Produced by Triple Projection 1a de achat d aye tt eS atk an 855 Colors, Patchwork Reflector for Viewing... 597 Colors, Test for Heat Absorption of....... 158 Columns, Large Round Veneering.......... 606 Comb, Ruling Paper with.............s.ees:. 939 Comb, Semicircular, for Child’s Hair Cut. 914 — with Blade Attachment for Man’s Hair Combination Tool, Simple, Adjustable to SE c6ecsnarndd duce dwaeeRenades sue 366 Combe, Linked, Hair Waver Made EP 802 Comment and Review, by H. H. Windsor. sath in aichicts b de chink oie See om te he ae 17, 177, 353, 507 Commerce Body, Los Angeles, "Weather Calendar Issued Bi ov e's 6wesdhuads ed eetG ie 644 15 Commission, Health, to Have World Wide DEE Shindbdsb00 40 0b 0050260408649 cesevngs 873 Community, a Unique Country, by R. P. CEE tketeeberotnhecseenennecsevoccnnne 740 Community Chest, Big Telephone Drive Fills, PT OCC 683 Community House Given Town as Memorial 583 Community House, Model Soldier-Civilian... 320 Commuters Find Coke Mine on Trolley Line 380 Compass, Simple, for Boy to Make.......... 476 Compress, Electric Three Arm, for Cotton EE A Ty ep ee eer 356 Compressed Air, Auto Body, Rubbing Ma- Sy ND Ts 456.000 05e nes 00s 00 deb eoneanse 835 Compeennes Air, Ferry Guard Rail Operated 84 teach a dne ceed Cash beeteheee een see ted nee 1 Compressed Air for Oiling Automobile PN cease des dendoamandensS dG 000006 h0'0 © 462 Compressed Air Sanitarium, Steel Tank Is.. 845 Compression, Lost, Restoring............... 612 Compressor, Air, Small Enough for Private CED nn 606602 ane ONUhSREE CARBS O CODES OES 667 Comrades, Lost, Pictured Letter Brings Te Ore eT eT eee ere 639 Concrete and Steel, Adjustable Pipe Sup- OE. 60.00606.054645 Shh 0b STD ERO OR Ses 670 Concrete and Steel, Chopping Block Base PE OE ctatabsascavecerrenseedanesesesve 907 Concrete Arches Restore Old Iron Bridge... 24 Concrete Block Heats Intake Manifold..... 446 Concrete Coat Given Iron Stack............ 229 Concrete, Coke Makes for Building Houses... 903 Concrete Cottages and Houses, London De- partment Store Bella... ...cccccccvccscccccs 442 Concrete Dam, Highest in Canada, Vancou- PC 3 0csd Gene deh bebbns bdeeees eeewes 681 — Drying Floors, Coffee Plantation se Cntchteteice tices eek eee en de thease cae Concrete, Electric Generator Parts Made of 368 Concrete Fish Pool for Lawn............... 748 Concrete Flowerpot, How to Make.......... 796 Concrete Forms Five Ton Buoys to be Used Se. SRNR BGO oo oc ec eacesgiessassrecse 21 Concrete Foundation, Blast without Disturb- 3 | erage einai Hepeingae 862 Concrete “Front Beautifies Frame Residence 370 Concrete Haystack Platform............... 778 Concrete Headgear Planned for Scottish CE. DE os eneceebedseneteseesesesnduaces 282 Concrete Hoisting, Simple Mast Replaces TC an adéeedvekatesbhenbibtasaesapes 861 Concrete I-Beams, Construct Retaining ED GSE eixicreckiee ceed thes eescdcsswves 568 Concrete Igloos, Modern Eskimos to Have.. 461 Concrete, Iron Adheres to by Friction, Is CE Gbihceded cans evirseiused epeearins ee 102 Concrete Manhole Form, Dishpan Makes.... 453 Concrete, Mixing by Gravity............... 935 Concrete, gerd Process Makes Many Forms Se Se (ti crchblaneddesy6ege0se0eben@en 118 Concrete Si Main, “Havre to Paris, Advo- CE bier nah dts aoa 26 Cn eee er eee 665 Concrete Pavement, Moving Belt Smooths.. 666 Concrete Post, Handsome, Rural Mail Box PEE OP Leb destetiiacvasnncadonveseces 748 Concrete, Preparation of for Use in Sea a ee eee 96 Concrete Replaces Wooden Planks at Grade SI ana ns 0 od6bed 40 ge6isOeusesessees 412 Concrete Road, Canvas Held over with Wr FOG og. 0 6 4.5.04 600 6600 6 8g006 bee 600 545 Concrete Road ry Handled on Big Scale, Sey SOs Fe Ss ct nwesecesceses 569 Concrete Roller yon Rink, “Outdoor, Massachusetts City Park Has............ 271 Concrete Seat, as. on Stillwater Cee SD no dr chnccapubcorcongres o¢ 586 Concrete Ship, Two Hundred Shots Needed Ch DN aveubwcashec pCinces eb eh gece ee ben 192 Comerate Silo Used to Make Outdoor Fur- as Concrete Stairway up Precipitous Pittsburgh _ ous Storage Bin, Huge, for Coal, at SEUOR, TOMMEVEVEREE 4c cccccncgucecccess 428 Concrete Swimming Pool Built in Back Yard 926 Concrete Swimming Pool, New Public for Children in Los Angeles.............6e6. 4 Concrete Tank for Carbolic Acid........... 48 Concrete Telephone Booths, Railroad Uses. 211 Concrete Wall Molds Change Shape for Re- SEED: Sain 404 2006806 05 66 OR 405 6 HCE PO KS 845 Concrete Work, Bucket with Bottom Door ED ou a CUES $abens MbSe deed ee ene eases 89 Concrete Work, Steam Radiator for Heating in Freezing SE: dd64.600n%6¢20000 0002 286

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—— nee arene — ~ ter

16 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Concrete Work, Wheelbarrows Eliminated in by Use of Compartment Body Truck Condenser, Alcohol, in Auto Radiator Conductors, Suburban Car, Broken Insulat- PE od 5 dake <e6 eee Sen oe Cee ee ms Conduits, Jacking of Prevents Mutilation of ON OCR rt eee Cone Clutch, Slipping, Remedy for.......... Confectionery Store, Life Size Dummy Clothed tm Popcerm 1M... cccccccsccccsecs Conference, Peace, Busy Map Makers of OS OF erp rere eee rr re Congestion, Cerebral, Hypothesis, Advertise- ment Helps Investigator to Test.......... Congestion, Traffic, Odd Plans for Relieving Congregation, Church Built with Cheap Ma- RR arrrrrrr tT tere eee ere Congressmen Wearing Headsets, Radio Con- OD BD oo bk pede os 00 Ua ea 0 40 ae Oe Connector Block, Aerial, How to Make Connector, Electrical Test Connectors, Electrical, Comnervatory, Lincoln Park, Rustic Water RY cele cinignnd Ku canes bene aaa ek ate we ns New House Around Snap Fasteners as.. | Construction—Hoisting Bucket with Bottom Door Speeds Concrete Work.............. Construction—How to Make a Collapsible Window Ventilator Construction, Naval, PS Mt cctuCewreeea seed dageannnae-< Construction Outfits, ccc nas epee eed nee obs Vee 6 Gees Construction—Skyscrapers Built from Top and Bottom Simultaneously.............. Construction—Special Square for Mitering, How to Make Construction Troops, ee ee Err eee Construction Work—How to Make a Com- bination Chair and Folding Bed Container, Nonspilling, for Acids........... Containers, Double Walled, for Radioactive TL << ccrnhbbicg én eb Abbe egos Maw e.e Contest, Thousand Dollar Prize, for Best CIPPIRRS FPOFACRUES cccccccscccvesecsvases Contests, Prize, Open to American Fliers. Continent, Long Lost, Crusoe’s Isle Thought 8 reer rrr rrr Conveyor, Automatic Wagon Loader “for BPOMOURE BERSOTIO) EO. cc cccccswesccsavbsses Conveyor System, Simple, for Lumber Yard Conveyors, Endless Belt, Combined with Ladders Aid Fruit Pickers Cook, Pastry, Makes Sugar Model of Mount I tits crraid itis wale Se Raid ab ok 6 69 Ee aR Oe Cooker, Fireless, How to Make ee ee) a) Cooking Outfit for Campers, Adjustable, PL cer advasemiee hoes 6 O44 See Bape es Bee o Cookstove, Small Electric, Folds Up for PP cnet epider dbo thtrereh tenes cabo Cookstove, Tiny, When Folded Resembles Suitcase Coolers, Bearing, for Railroad Cars......... Coolie Labor, Chinese, Saves Native Rail- road from Erosion by Rains.............. Coop, Chicken, Made from Trunk Copper Annealing Furnace, Water Seals Pe SE wees ace pacenadesee Copper Coating for Marking Steel.......... Copper, Iron Coated Mechanically with...... Copper Mine Yields Natural Map of South MR iar eae ere re Copper Plates of Invitations Make Ash Tray Copper Salts, Detecting in Canned Food.... Copper, Soldering, Substitute Torch for ESE ee ar eee Copper Wash Boilers, Reinforced Bottom for “——, Washer Removes Paint Spots from ey I Salt a i a ai oe ar hie ahi dete ol dh ese a0 a She Copper-zine Alloy, Secret, Copyholder Lights and Magnifies Reading... Cord, Electric Light, Clamp for............. —_ Plug Appliances, Electric, Proper ene” ME cig Lian hah ka ae ak a ah ae boa a ok oe aoe Cords, Drawings Kept in Place by.......... Core Making, Blind Soldiers fantracted a Core, Red, Is Trade-Mark + ol Rope Corer, Nonrusting, for Apple Cores, Rock Drill, PG. <sc. cueewte sense. eh ee Khe ho ee Cork and Glass Tube for Air Suction Trick. Cork Attached to Boat Key Cork, Ring on Tie Held by Machine 63 453 702 51 445 898 959 436 895 40 358 448 Cork Used in Push Button Repair.......... Corks, Dried Out, Boiling Water Renews... Corn, Indian, South American Industries I i sca Na cover tas bis tach idk wr ae doy hae ec ea Corn, Mountainous Piles of, Snow Covered 2 ca censeteheee ON de HOC OOS Soe eee Corn, Seed, Wire Hanger for................ Cornmeal and Vinegar Remove Stains from PE: <.. ic teareawasaes ee sss OR a ER Oe 6% a0 Cornstalk Cutter Makes Silage in Field Corohium, New Methods of Analyzing He- § so ear rte Corporation, Million Dollar Building for Employes Erected by............eeeeeeees Corral, Live Stock, Modern Methods in Con- SEE sce rec stetsakadde chases deruaees Corrosion of Hot Water Pipe, Exclusion of = Sr rere re are Costume, Bizarre Canoeing, Fashion Artists CE: sp.ccktebehneCete eekene eke kee a one Costumes, Nondescript, in Bolshevist Army Costumes, Paris Museum of Shows Clothing EE cbs dd casa CeeW be ee ORERe OH Re ew ane Cot, Old, Creeper for Automobile Mechanics MN Seo oe piv’ asc kusc ae 8 ac Bows — Summer, Sewage Disposal System Cottage, Trustees of Sycamore Build for Teachers Cotter, Spring, es — Tweezers Made from........ Three Arm Compress Makes Den Cotton ‘Boil, New System of Extracting Fiber DO aka da a a alern vn boa adn al Oe oe as oe ae oe Cotton Gins, Texas, Fires in Not Caused by DD ic ciden ate ctereh ete edkae baeawnes oa Cotton, Japanese Seaweed Fiber Mixed with Cotton Mill, Experimental, Textile Industry Pn Te. dsc ak cant de ethaweonees es cee ae Cotton Pest, Bronze Statue Honor Cotton Plants, Weevily, Poison Powder on Coulee Cricket, I a, IN, on 6 od. 4.4550: WO) 4.0 0a 0868s Council, New, Study of Nutritive Values of ee ES Gh a ca cc sc deewewsccecces Counter, Speed, Old Watch as............6.. Countersink, Adjustable, on Drill ee el errr re Warring to Extinction, by Country Communities, Remote, Aeroplane CSC TOS POOR OO es ov dc cs ce wcrevcevssiore Country Community, A Unique, by R. P. PEST TT TT Tere rere TT Tee County Courts, New York, Hexagonal Tem- it Ue Pi, 6th ede eink dake eee eee eer esa aed Coupling, Automatic, PD SEO itccseecteee ves eens wekne ee eese an Device, Flexible, for Small Trail- Coustine: Pump, Valve Cap Forms......... Course, Olympic Marathon, Officials Select. . Courthouse, Hexagonal, for County Courts eB BEC cccnadbesatabsenancesarb en Courts, County, of New York, Hexagonal ec ccd we aan eo oe Cover, Baby Carriage, Clips Hold in Place.. Cover, Hingeless, for Tool Box............. Cover, Umbrella, Contained in Handle Covers, Washable, Button into Place Cow, OO VC dated se atch Keen ea deh OSS ehh ee hes Cow, Pure Bred Hereford, Has Triplet Calves Cows Learn to Swim Canal................ Crab, Harvesting the Giant Lawrence William Pedrose Cracker Jar Has Aluminum Cap for Automobile Seats, Prize, Honored Guest at Hotel Lunch- Moisture Absorbent in Cracks, Small. in Tools, How to Fina....... Cradles, Collapsible, Auto Repair, for Chauffeur ee Crane Bearing, Shattered Ball Taken from.. Crane, Girder Dropped from Falls into Shop PEE. cc ccec biped ee wedeeee sie aeaeeee Crane Helps in Unbolting Timbers Crane, Most Powerful, Lifts Million Pound rere ee ree tere Crane Signal Code, Reclamation Service Adopts Crane, Steam, Rescues Imprisoned Horse... sa oy Four Big, Installed at Army Supply EO Oy Te Fe res Te eer Cranes, Huge Loading, on Electric Battleship Crank, Hand, Surf Board Propelled by Crank Operated Pencil Sharpener........... Crank Operates Green Pea Huller Crankshaft Bearings, Boring Machine for.. 664 669

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ce ho ed te —— lc lc tC aE we woe we weve wv Ve oon = rea ~ wit a ay ~ wea we - al -— od ew He OOS OG Set la See oe ee * POPULAR ME CHANICS INDEX, VOLUME XXNXIII, Crankshaft Makes Garage Air Hose Rack... 578 Crates and Boxes, Heavy, Webbing Handles ee OR rr a ere 352 Crawford, R. P.: Country Community, A Unique........... 740 SB OO rere nrr rT rrr 575 Weeds That are Making Good........... 249 Cream Gauge, Bottle Makes................ 624 Creamery Scale, Nonrusting Operates in Oil EN i Sal ae Bd hie Osan aan de ae ae 714 Creed in Bronze Placed in National Capitol. 721 Creeper for Automobile Mechanic Made from Pe i cia deckbabavan eek eee eaebewnd nee & 295 Oe I 6s cece dcnseretatsunece 592 Crematory, Ultra Modern in Kansas City, is Sr Se er. So cit cc cands saceasens 393 Crew, Airship “R-38,” Sails for England.... 835 Crew, Loiler Sheet of Exploding Lomotive Es 5 ua. uh dco Wien as a ae ee Se ean eat 674 Crew, One Man, for Curious Torpedo Boat.. 642 Crib, Portable, to Carry Baby About....... 1€2 Cricket, Coulee, Warring to Extinction, by aS Re rrr 899 Cripple, Armless, Uses Feet to Paint Pic- De Lcdnwsd der tenes eae hee b keane baa 579 Cripple, One Armed, Light Fixture Holds EE” TI: SN 55. ca chs, secloc gu pick th esc Me aca a 479 Cripple, One-Legged, Is Expert Ice Skater. 636 Cripple, One-Legged, Swimming Instructor Se ss oe ce baed as cae ee eee ae ewe o 873 Cripples, Wheeled Frame Teaches Walking . PRT err eee ree PUT eT ere eer 20 Crochet Ball Holder, Simple................ 319 Crocodile Plugs Sewer in Panama Canal Zone 262 Croquet Set, Soldiers Play Pool with..... 697 Cross ene Trip, Sailor Makes Chained to oar ck stesso eee ait ke We Sek le Sk Gee toc 16 Crossbreeding of Sheep Produces More and SS Rr res rrr 98 Crossing, Railroad, Spring Gate Closes..... 117 Crossing, Tall Semaphore at, Visible Over oo ge Rae ae re 695 Crossings, Grade, to be Marked with Stand- Ne NE: aan ee ah. ce arch sb se a he ae 44 Crossings, Railroad, Electric Danger Signal RF re re re ihe eres 74 “Crow,” Smallest British Airplane, Weighs 2, rrr rrr fs ear 181 Crowds Line Down Town Street to Watch Cee re are eae 535 Crucibles, Special Clay, for Optical Glass... 58 Cruiser and Houseboat, Shallow Draft Mo- Ee SS rr terrae ee 917 Cruiser, Wrecked Italian, Turned Upside eB re reer ee 329 Cruisers, Visiting Japanese, Create Interest i ee SO hint ane eenaee es 6a nese onde 548 Cue Tips, Discarded, as Bumpers........... 145 Curb Cock and Water Meter Housed in Oval SE SoG Va aa ik a ae a eee Raia eee ae 43 Curio Collector Has Totem Poles in Garden. 748 Curios in Doorn Estate Hidden by High | IRE Se fae race Perit era 416 Curler, Hair, Elaborate Machine for Uses fe ee eae 815 Curling of Photo Mounts, Preventing....... 153 Currant and Gooseberry Bushes Spread De- PETC CS: DI 60k kite ace Rew iecanse eens 574 Currency, Paper, Distinctive Portraits to be Used for Various Denominations......... 542 Current, Alternating, Camera Catches...... 785 Current, Gulf Stream Shown to Be World's CE Snx.cxieaeess ns easen@aween® haw eaicn 719 Current, Trolley, Portable Rail Joint Welder EE oa aé:@ bade heen RS eae ee a ae Ok eo 368 Curryeomb, Discarded, is Efficient Foot PE wkd catance eeaee web and O40045 45a 08 447 Curtain Rod,” oil Spring, with Claw NIN Fai ok ir iosirsnh io So i Rae a De We a 593 Curtain, Roller, for Drying Prints.......... 472 Curtain, Theater Drop, Great Mirror to Be.. 506 Curtains, Auto Door Has Divided Pockets a "Eee re ee ee 674 Cuspidor, Papier-Maché Cups for Make ee Ss en aS alk ae ke SA aoe 435 Cutter, Dowel Pin, Works Rapidly.......... 778 Cutter, Hand, for Thin Washers............ 933 Cotter, Bree, DGSWOCRIe s vcccvccecccosens 290 Cutter, Phonograph Needle, Made like Scis- ID is 3 ics be o's BL ad eR OREN SON eke dee a 377 Cutter, Washer, Made from Tubing......... 295 Cutting and Serving Machine for Butter, POSUERE BOCORREED ..ccccccreazsageairr 55 Cycle and Automobile, Delivery Truck Re SE EEE. bw ok dn bk se SRR SSS aaa ON 346 Cyclist Climbs Ladder Dangled from Plane. 641 1920 17 Cyclometer, Mountain Trails Measured by.. 132 Cylinder, Auto Engine, Spring Guide Helps i»... 8 9 BO Re eg ia eran 708 Cylinder, Celluloid, Newest Swimming Aid. 648 Cylinders, Auto Engine, Atomizer Injects Te DOOOUNE BOD vccidescresedossunave 939 Dairy Scale, Nonrusting, Operates in Oil EE 0 acne naw ok aig a a aie Oe A we ae a eae 714 Dairy Supplies—New Milker Has Single Hose a er ere er rape 919 Dam, Canadian, Suspended from Piling, Has See SEE occcadadenecdbebeseanee 176 Dam, Croton Lake Overflows for First Time 703 Dam, Highest in Canada, Vancouver Has... 681 Dam, Highest, to Cross Gorge in Northern I ek ee a aii a des eile wal a ut tee in ae ang 526 Dam, Large Masonry, Government Nitrate Plant to be Powered DN ati hie tao os te a ie Ree ie 904 Dam, Movable, in Savannah River to give SCOS Teens PORNO snc cccascecaceseses 188 Dam, | Small Adjustable Galvanized Iron Fits 918 oe ae ee 942 Dam, Tennessee's Highest, Overtops Niag- PL Kb-p aude eh wie whe eee caw sede Ge Lae ee eee 23 Dams on St. Lawrence River, for Power and Se SEED ba vcscbs as nes eeesannaane 68 Dams, Series of on Bay of Fundy to Fur- Se. ee. ctvntaeds deta seeseead seaeaweed 186 Dams, Soil Pressure Gauge Tests Strength of 656 Dancing Pump with Ankle Strap........... 593 Danger Emblem, National Safety Council EN. icd de dite bin kh hea wae Wa ee oe eee 867 — Signal, Electric, for Railway Cross- ea ee ‘ Deaper Signs, Simple, Appear to Be Elec- nn Se 255th cnen demee we be eens tas 340 Danger Signs, Unusual, on Ohio Highways. 756 Dangers of Sea Decreased by Registering 0 rr are re er ne ee ee 14 Darning, Sewing Machine Attachment for.. 753 Dash Attachment, Auto, Combines Seven In- olin docu caesh enn awdsaivans 922 Date Palm Trees, Patients Use Fronds of to Ps epic ciara ean ehaneneneeae 749 Daylight, Imitation, Showcase Lamp Sheds 745 Deaf-Mutes, Entertainment for Comrade pf BO RRR er rrr ee 898 Dealer in Tractors Has Unique Way of Ad- vertising Horse’s Inferiority............. 98 Deck, Lighter, Steamship Funnel Falls on.. 811 Deck Rails, Cans Along Hold Ship's Hal- SE nh ok uc h86E 6DESS SERA AROSE ORK EW Os 862 Deck Winch, Boat’s Main Engine Drives... 889 Dedication of Panama Canal This Year.... 538 Defect in Box Construction is Inadequate DE. dicteceta rset eh nies Wankegesadeen ea 134 Derrvery OF Tey WOMOR. oc cccvasescncesens 619 oeneety Car, Body Built like Phonograph _ Delivery Car, New, Resembles Auto and Cy- + PE Sind ees dan SORA eS week ee eae ee Delivery Motorcycle Fitted to Carry Fresh DG cc withne shes heh ees ended et ecenaeeehes 505 Delivery System, Hole in Wall, Elaborated. 654 Dendrograph, Value of Proved in Actual PEE ads Sthnekdcpassoneseneseedbesaae ee 864 Dentist, Cabinet for Has Swinging Drawers 546 Dentist, New Electric Sterilizing Bath for SGN GE pb iccte eo ecehastneeeeaneges 438 Dentist, New Swinging Wall Cabinet for Holds Tools Conveniently..........--cee8. 620 Dentist, Truck Serves as Office for in Forest ea ear reer ere 564 Dentistry—False Teeth Move Naturally When Mounted on New Stand............ 236 Dentistry—Laboratory Lathe Has Glass Topped Shields Ee Aree Fe er 234 onveniently on Wall Cabinet shvbicias besbahen eee Cees 520 Deodorizer, Electric, Vaporizes Charged W a- [et cio bcudeetateieendd cube alte Kees eae 915 Deodorizer, Venetian Glass Vase Is........ 275 Deodorizer, Windmill Driven, for Electric EM caden och anenceesoiee606ns sntsbamabes 377 Department Store Handles econdhand DM cts cockotiawtnad a Yo keeabek ane see ee 112 Department Store, London, Sells Concrete DP? co hd eee ended S OS 6b0e ence eeeeaes 442 Depth Bomb Stills Troubled Waters........ 675 Depth Bombs and Y-Gun Form After-the- OE ce ce ewe she mats Meme oe 908 Deputies, French, to Use Electric Push But- OS Se, ee ey ee 72 Derrick Mast, Trees Used as Save Labor... 238

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18 Dosetehe, Steel, White Ants Force Oil Men t POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 i asics ncaa ar aka desta tite ds OW Na 10 Desert, Deep Wells Reclaim, by Frederic = Se ea ce6seeeeCee BED Desert, Sahara, Aeroplane Crosses. $28 Desert, Sahara, Nature Forced to Make Ice in, by Robert Mac Millan Law........... 331 Desert, Utah, Tarry Mineral Found in == =a eae becoeeenen, Sn Design, Ornamental for Arrow Heads...... 629 Designers, Fashion, Bizarre Canoeing Cos- GD Oo cc cnet ve ensetenesnves 657 Desk and Chair, ‘Geadbination, for Stenog- A ear er rere re eee 671 Desk and Chair, Combination, New, Prevents I POOR 219 Deek, Built Im, om Chair... .cccccocssccses 464 Desk, Collapsible Show Card, How to Make. 124 Desk Lamp Made from Odds and Ends..... 472 Desk, Slanting, Tack Prevents Pencil from kn, Sane errs owe Cee DOG Tewiet, Paper Roll... .ccccccvcscsccces 784 Desk Telephone Set Has Double Receiver.. 534 Desk, Wing Adds to Surface of............ 956 Destroyer “Reid’’ Completed in Record Time 217 Dial, Instrument, Aeroplane’s Trim Checked by i sb oie nn ade dae ee eke ee ane 856 Dials, Seven Instrument, on Auto “Dash At- EE? diag aca O at ae ace eb Wak a Oke Ewe 922 Diameter, Piston Ring, Found with Circum- PE Ce vs cekcendée eb se et eeebnage 419 Diamond Drill Work, Survey with Sound- cn 6S ane vodka oe Owe Oe ee es 384 Diamonds, Half of World’s Owned in United RS a ee ee ee 432 Diaphragm, Geophone, Nickel in Improves. 737 Dickie, Francis: Thousand Year Old Far East City being 0” IGS Ree ree 423 Dictating Machine, Bell Warns Typist of TN ee oa See Ree hin ee a a wea ee 52 Die, Paper, Embossing Process Patented... 625 Die, Paper, Monograms Embossed with.... 312 Dies from Real Hides Stamp Imitation DEY ties dtd Bee ret saeeks AMR ha OOo 6 263 Diet, Improved, for Silkworm of Japan..... 190 Diet, Satisfactory, Analyzing by Biochem- ical I cick. bday ha JS Dita oh ee 395 Diner Overturned by Freight Car in Col- tal Sia a nla «alia ey ce Aviea ame Hee to 427 Dining Rooms, Three Piece Buffets for..... 255 Directory of Denver Shows Growth of City 367 Directory, St. Louis “Red-Blue Book,” Wives, WEG POMNNOD GIVER IM... ccccccccccccccces 905 or ane Telephone, Holder for Use in Of- 506 Diricibie, First Rigid, United States Navy EE AN ie Se a kh wanes 6 eek aaa ad es he 670 Dirigible, German Runaway, Gives Passen- as eis «se hk da pee area ae & 40 4 ae me Italian, to Carry Passengers to 3 pa aw Ati he hae oes OE ee Ok eee 4 Dirigible, Model, Car Carries as Advertise- EN Aa ik kha 6 aie be dialed Wi ee eae a aoa 697 Dirigible “R-38," Crew of Sails for England 835 — American, French 75's Ordered - Dirteibica, Preventing Electric Charges on. 394 Dirigibles, Two, to Start Cuba to Florida EER ee re ee 750 Dirt, Road Is on One Side, Paved = Other. 917 Dirt Scraper, Pull of Team Dumps........ 747 ~~" Brought by Blizzard 4 *Atiantic sae Disasters, Mine, Analysis Detects Blown Out DD én ten saath beans e 4 a8 © hae t b0 an 426 Discharge Papers, American Legion Warned i Ce Mi. wakes ies p< EA wee wa éo5 ob 836 Discouragement of Automobile Thieves.... 139 eeesees Bares New Source of Platinum ese REESE arr are Pre ee eee 5 Disense in Siberia, Red Cross Battles...... 663 Diseases, Lice, Due to Lack of Soap, Spread PD + bs cua aed Weaededes.0 kgab a anee an 588 Dishes, Broken China, How to Mend — EE 6 Oil eae alee © hea k ine wee een 466 Dishes, Earthenware, Sealin Wax Mends. 477 Dishes, Shower Spray Nozzle Rinses....... 316 Dishpan, Filled with Water, Lessens Odor of DE £4665 bbch Ade EER DEhEe datas beds ees es 305 Dishpan Makes Concrete Manhole Form. 453 Dishwasher Has Shower Bath Arrangement 435 Dishwasher, Newest, Motor Drives Large CID nt einai 06:0 eica eo Ai ae & 4 Adnan a 806 Disinfectant, Poison Gas Used as in Paris EE 66:45 45 Con ninle &dkure a uee bb0s ee aad - 725 Disk Reamer, Rotatin Disk, Thin Steel, 24. Viensasesh veered” RE acca ctresnaenes aeneee éeoneene Disks, Cutting from Paper................ Disks, Rolling Iron, Test Road Surfacing DED 24) d0%6n4 404 R 40 6 64 be da ee Ere EO ED Display Building, Five Thousand Manufac- turers to Have in Paris..........-.eee00 Display, Sidewalk, Aviary Lattice Cut to ee Displaying of Rugs Made Easy by Rack. Distillation for Testing of Gasoline, Elec- tric Heater Used for.............-.. os of Mill Waste, Charcoa’ Derived Distillation of Wood Waste Aided by Odd PD cccteeeus tadesncoddsdianercevian sce District of Tsingtao, China, Becomes Meat EE GONE anc accessed scscccesoccses Ditch Dug Without Moving Tree........... Ditch, Irrigation, Small Adjustable Galvan- ized Iron Dam Fits Any............-+0.. Ditch, “Littlest, Longest,” Across Desert Waters Roadside Trees...........ee+.000. Ditch Water, Filter Clarifies............... Ditches, Device for Back Filling of........ Ditches, Drainage, in Swamps Blasted with "en Sr ee Ditches, Garden, Subirrigation Eliminates. Dive, High, German Soldier in Full March- rrr eee Dive, High, Sailor Takes from End of Bat- SPO GD cornxeneens 0400003488000 0s Diver, in Rigid Brass Suit, Breaks Record for Depth Diving Suit, Lumberman Dons for Work Beneath Lake a he ee an at eae e © 8S Wh Oe Division, U. S. Army, Goes Overseas to Po- Se DD 8 ck.g end dacseeeererdanracsnease Dock, Enormous Dry, Canada Builds at St. hn Dock, Floating Dry, ON ae ay ae eer ree Dock, Floating, Made from Old Car Ferry.. Dock, Floating Salvage, Launched at Ger- Ree rer rr eee Dock Frontage, Detroit Gains by Dredging PE ED cs ivanens + hekad boas i Ae S4e es Dock, New Dry, EU ov hada nee ee ee 6 make a ae mS a Oc Dock, New Pacific Dry, Built with Help of Pn Se cnchepeesds ease e hanes shee che adee Doctor in Airplane, Mosquito Breeding Pools SL 5.55 cade os 64 eo Geer eke ee sasee ex a Invents Germ-Proof Drinking Foun- Se Ki tpestaa aides can ehebvaavdeeeuse sens Doctor Travels by Tractor....-.cccccscescee Dog, Alaskan, Pulls Ski Mounted Man...... -_— 5 Saoews Line from Shipwrecked Vessel ore ee Second Section of Cr ee Dog, “Lathe, for Turning aN paradagats Dog, “Rags,” Fire Department Mascot, Chil- Grom Beene WUMOGR GC... cc ccsctcseccscces Dog, Small Lathe, Driver for... Dog Trolley, Stop Di dded ca nateis eee ¢9.0e a Dogs, French, Tailored Overcoats for...... Doll, Clockwork Causes to Walk Doll House, Chest of Drawers Painted as.. Doll Lamp for Bedroom...... Domestic Science Kindergarten, PUUPNOTT TROD ccc ccccccscccceveess Door Catch Made from Strap Iron......... Door, Dowel Pins Prevent Opening by Re- es Oe I i. 3 «ano rik dsc 000806860060 Door Hanging, Oe PP ree penne Turning of Rings Annunciator Door, Lateral Movement of Knob Locks. Door Locks, Electric Time Recorder Oper- PE 5 airs 4505 00k) 200s keS 0 dee £0 sehen ss Door Mounting for Silo Forms Slide, “Lock, “ho “ ye rrr ee Door Pockets, Divided, for carrying Auto Curtains Door, Screen, How to Lock...........5+.+065 Door, Sliding, Spring Lock on Door, Stairway, snneenes of Knob Saves SCOOPING ... vc ccccccsccssccsccssrssesece Door, coy Open, by H. H. Windsor Door with Horizontal Fold Is Warehouse EE van enon eh esG hes aaes 04 Cine OS ony Doorbell, Cork Used in Emergency Repair of Doors, Asbestos Lined, Hide Fireplace in re ee ee ee eee eee eee Summer Pe

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674 619 318 177 §71 473

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Doors, Many, and No Straps on New London RE s2chesdcabegebeetaa then eedeeddewe poorwer. Child's Swing Built in........... 306 Dowel Pins, Cutting Rapidly.............. 778 Dowel Pins — Opening MF Door by Re- moval of DL chbhthekt seen ekeneweens. ans 78 a Kit, Comnpiete, Traveling Case Con- pa ae ree ca ely Saha aE 897 Gee, De THe DORs oo 4cscnsesaendenss 797 Draftsman, Felt or Sneep's Wool Cleaner for Pe ee OF. ocr eaedeeecbckenecessen 784 Drastman, Handle for Scale of.............. 765 Draftsman, Triangle with Irregular Curves ee oe en. Ci tvenrenadcae seabed aep wes 615 “Draftsmen,” Women as, by H. H. Windsor 18 Dragline Excavator Crosses Rio Grande ee, DP as paweeemed wae as bane a 77 Drain Boards, Enameled Steel, to Cover i NE hs i hint we Oaig At one © Oe 914 Drain for Cement Sidewalk................ 767 Drain Tile, Tool for Laying in Narrow Er errr ee eee 560 Drainage Ditches Dug with Dynamite in RR re ere 596 Drainage Gate, Self-Closing, Water Controls 883 Drainage System to Reclaim Missouri Swamp I Mencia are arsk sk sa ena ie a ale ee he vied a an 3u2 Drains, Tile, Quickly Buried with Scraper NY SND 6s on aoe kd can aie O Aue ak a ok oe o's 561 Drains, Tracks of Unusual Driveway Serve es? elie 0k tin ACN ick al is act in hee sg IE a a —_ = haath Mutes Present to Comrade PE Focnes cin wicn ae aed waa beara weet 898 Deawber. Pull of Tractor Measured by In- DE: ii: wich pnes ed 6a bth Chee oR a 0~e © 631 Drawer Lock, Stiff Wire Rod Makes....... 134 Drawer, Simple Carriers for............... 478 Drawer Under Floor Grating, Dust Pan Sub- 0 ree ere era en ree 774 Drawers, Swinging, Dentist’s Cabinet Has.. 546 Drawing Board, Small, for Use without T- PE cAtdcteeeanee katate weae Pas 660 0% 632 Drawings Kept in Place by Cords.......... 142 Drawings, Opera Glasses Enlarge.......... 937 Dreadnaught, New Electric Huge Loading CE OE ike cane baste eheasdbateduninabe 803 Dressmaker, Home, Bulb Operated Skirt I sss i ae hich os in hiatal al rig nil dp ea 428 Drier for Refractory Ladle Linings Mounted on Two as" bk. Pee eee 655 Drill, Adjustable Countersink on........... 461 Drill, Breast, Coat Hooks as Hanger for. 127 Drill Carries Own Clamp and Centering errr rrr rer 711 Drill Coren, Rock, Machine Splits for Min- eS Bika Ga de thn b taL alae Wo ak oa we 4 881 Drill for Fiber and Soft Metals............ 939 Drill, Grinding for Edge Cutting........... 775 — ~ pews ope Made from Twine with sie Drill, Jig Makes Self-Olling................ 619 Drill, po NSS and Protractes Made for Use ase Drill Made from Wire Nail...............5. 946 Drill, New Hand, Single Miner Operates... 732 Drill, New Well, Blind Inventor Constructs. 68 ~ =. Press, Bench Vise and Hand Drill an eee eee eee eee eeeeeeeeeeeeseeeeeeeeseee ‘ Drill ‘Press, eo Rh! eee 777 Drill, Ratchet, Old Man for Use with...... 296 Drill oo U- rere Is Broken Tap Ex- PT tetehssedisewe es a ree 620 ak Rotatin tas saceacaitial ah Sark incl me erred Nie 928 Drill Shank, 1a ‘Tool Made from Cuts Out cont Wooden Sn cc hime a be mialiate a ae 286 Drill, Twist, Holder for Is Handy Gauge.... 875 Drilling, Carbide Used Instead of Chalk to Coat ee SE Sci cheaweennees ese 135 Drills, Fuse Casing as Box for............. 765 Drills, Heavy Machine, Move like Traveling CE eas te i dae CAS CCEA Chee ees Oh 4 Ot 19 Drink Mixer, Revolving Glass Cylinder is... 21 Drink Sanitarium Now Radium Hospital.. 739 Drinking Fountain, Germ-Proof, Doctor In- DE. secdceeeewvegess dre tessbesaeenntadues 598 Drinking Fountain Nozzle, Guards “Protect. 406 Drinking Fountain, Rustic, Made of Stones Re, B8,. 9. Ree were. 587 as Fountains at Base of Park Lamp- oe Drinks, Soft, Huge Barrel Yields Variety of 717 Drinks, Soft, Served from Floating Bar in Canadian Harbor ...........c.eeceeeeeees 44 Drinks, — Sold in Bottles by Vending CT and Engine a Sinit in Home Light- DM iacnpe than bhaehbdahadse ese tah pm Dynamo, Miniature, Mounted on Back of DE 1.6 cies be hee wees seen ewe eb ae 6 Dynamo Operated by Weight Raised by Windmill Dynamometer, Treadmill Tests Tractors by Driving ee ee Eagle, American, New Law Needed to Save. magte, Carved Head of, Replaces Violin eee eee ee ee ee eee eee ee ee ee Earthenware, Sealing Wax Used to Mend. 78 708 233 898 110 720 80 709

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LAO NLT I EO te eee Tn pyre em eS ih Ls A Ae RE As ee 20 POPULAR MECHANICS INDEX, VOLUME XXNIII, HKaves, - ie Front, Rolled Awnings Kept Mn cde Ww hab sk aca Res ea ws Re bem ose 818 Eclipse, "Bela. Shows Light Rays Bent by DE a aces wa Gini er eA Re aS eek ae 11 Economics, Prizes Awarded for Essays on.. 639 Edge Cutting, Drill Ground for............. 775 Education—Ceramic Engineering Taught in EN CRNOUIIE 6 occ ac cin ca ceccces 600.0% 229 Education—College and Factory, Combine to Ne er ee 7 Education—English Grammar in Screen Ver- "S$ 2 —“SRaeeRrSsee 918 Education in Colombia to be odeled on United States School System............. 534 Racks of Electrical Units Simplify Instruction in Electrical SE oir coins sinus wae aN eke eae eee da 25 Education—Moving Pictures Used to Present Reconstruction Problems................. 92 Education—115 American Colleges Teach Highway Engineering..........ccsccecees 228 Education—State of Washington Trains Mer- chant Sailors, by Lawrence W. Pedrose... 425 Education—tTractor Courses Offered Farmer i awe hae ae he ie ee ae wee ae 332 Education—28 Soldiers to Demonstrate In- tensive Training Received in Army Re- cruit Educational Center................- 66 Education—University of Texas Gives Course De OE ere eae 480 Education—Young Toilers Sent to School by £ = | rae ree 906 Educators, Colombian, United States School , Yo y - “Sear eer rer ei 534 Educators Hold Outdoor Classes in Lace- making for Belgian Girls................ 601 Egg Breaking Plant, Government Supervi- sion Makes More Sanitary and Efficient... 106 Egg Holder, Worn Out Gas Mantle Makes.. 153 Eggs, Easter, Decorated with Photos...... 631 Eggs, Fresh, Motorcycle Fitted for Delivery of, 505 Eggs in Incubator, Wire Baskets Keep Rar ee hee ee ee ee 290 Election Returns, Counting of, Made Public NEN adn c cinencCuen es cst ab nee e en 746 Electric Accessories, Truck for Repair of Answers Call of Troubled Housewife.... 843 Electric Appliances, Cords and Connections, oo. OE” eer rr re rrr ere 287 Electric Arc, Small, Improved Searchlight eer ee 492 Electric Arc Used to Make Synthetic Am- ee ee Perera eee ee ee 240 Electric Are Welder, Ornaments Drawn with i ET Oe chin kee ced dk id oe eee 432 Electric Automobile of New Type Competes ES PS a re eee tae 190 Electric Blower, Portable, Cools Under- Ski Gruhn sek a Sh a a OO 88 — Bulb, Flashlight, Clock Illuminated sas Cece e reese eee seseeseeteeeeseseesreseseseeeeete ‘ Blextric Candlestick for Bedroom.......... 915 Electric Car Service, Railless, Planned for REE EA re ae ea eee 531 Electric Charges, Preventing on Airships... 394 Electric Clock, 24 Hour, London Station Has 222 Electric Cookstove, Small, Folds Up for I 0 on os anid die a tht amie Wiel ha woe AG 644 Electric Danger Signal for Railway Crossing 74 Electric Fan Aids in Selling Motoring IIR ss betas awd Ral te RN ee en oS 15 Electric Fan Has Deodorizer Attachment... 377 Electric Fans for Ceilings, Hinges Permit ee: 0 BO GR cas cn snes cenkrese 520 Electric Fans Made to Harmonize with Fur- SEE ere ree rae 434 Electric Flashlight, Germans Use Tilting SS See hearer eee 105 Electric Furnace, Expanding Liquid Con- fg SA re eee 256 Electric Furnace, Revolving, Has Many Ad- SIPS EERE RIT EE Ee ee 251 Electric Generator, Parts Made of Concrete. 368 Electric Hall Lamp Made from Bottle...... 476 Electric Heater, Auto Engine and Radiatur ech ea Se a Sani aie asm Oana a 875 Electric Heater Distills Gasoline for Test.. 421 Electric Heater for Knives Used in Industries 883 Electric Hoist, Newest, Made for Severest SD. bd dda Rik de Nd ne Ok Wie cle Wap Bre 756 Electric Immersion Heater, New, Scientists ES er er ari ae 400 Electric Iron Has Lamp Attachment........ 435 Electric Iron, Keeping Cord from Board... 605 Electric Iron, Walnut, Sacks Rid of Codling OM ieee Soe akok a 6 aie aie oe ee ie ied rae 858 1920 mgetese Lamp for Desk, Made from Odds and Electric Lamp from Doll for Bedroom...... Electric Lamp Thief, Catching............. Electric Light and Power Plant, Osaka, Japan, to Have Largest in Far East.... Electric Light, Balloon Dragging Anchor Deprives Eight Towns of............... Electric Light Bulb, Pear Shaped, Made of SIE, SU oo cea) ob cb ye mide 0 4 wk Electric Light Bulbs Keep Flowers in In- closed Stand from Freezing.............. Electric Light Cord, Clamp for Electric Light EY Hae Na Ak Soa ew Scns hae we Ne weg Ae ee Electric Light Globe for Cleaning Smoke- a a a os ainda in ia win as Be lie 100s Electric Light, Holder for.........ceccsce0- Electric Light in Hood of High Grade Auto. Electric Light Plug, Handy Temporary At- EIS fica sia ca a chin uaa dando we ukcaree Electric Light Shades Made i SiS sina air korean Os Wk aad fo. eyo s de cr Electric Light—Simple Method of Adjust- RES Sener AE arartnet Electric Light System, Big, Uses Wireless ad Taio k Gab mh tat ied wi ek ta ett ba a Lighter on Bench for Gasoline Electric Lighting Fixture, New, Converted So ok ala vdie de baeese eee Electric Lighting System for Garage....... ae oe Lights Worn as Warning by Traffic | Ea re Mink bali a Ak a iow a. 6a le on aie 4 Ra ae Electric Marking I NS in hain ke vn walla e 6 hb aaa ae Electric Melting Pot, Portable Bench Type. — Meter for Patrons of Central Steam Fixtures Made from RARE t eer eer a er eee Electric Motor, Household, Tripod Is Mount Electric Motor, “Little, Has’ Splash-Proof a ae eee Electric Number Plates, Elevator Passengers I in oa dSee he ah ope alge ed “gs Seas kta Electric Oven, Storage Battery Tops Soft- a ia tence ot iia kt a Wal Rak dk Gata ach ae mtocerse Plant, Australia to Have on Coal y el SCODCHHHEHCSEHEHSSHEHOEH OCHO SLOSS REESE SLO®S Electric Plant, Enormous New, Built by NE 5 oe isa kn a dr di nine ON lace We ea o Electric Power Tool, New, Is Versatile..... — Primer for Autos Vaporizes Gaso- Electric Push Buttons, French Deputies to A I ac or dhl caena ah fag hh ims @ Jak) Bie ace Electric Ranges, Knockdown, Used on United es NN, oct aoe be saresaeseeneas Electric Sand Pump Used to Raise Build- O&O See are eae mt my Sentinel Detects Heat from Enemy's dle aor terse hvalh ae are. 63 0 uaie hie tan te aae acecn % Electric Shock, — siology of Better Under- —.. fer ere Electric anamwenne Lamp Imitates Daylight. Electric Sign, Housefly on Loaf of Bread on. Electric Signal Circuit for Milk Ticket. Electric Socket for Candlestick............. Electric Soldering Iron for Auto Owner. © Soldering Irons, How to Keep Re vady aa, SPPreee rere: TTP TTL rere Pere eee Electric Sterilizing Bath for Dental Instru- DE si cechencaehee ewe ed ee dita we ee 00 © Electric Suburban Line, London, Has Many Se OE et I bi nc cwcceeeeowrscecs Electric Taxicab Has Limousine Body....... Electric Theft Protector for Auto Tire..... Electric Toaster for Starting Auto.......... Electric Toy Stove, Directions for Making.. Electric Truck Has Lift Platform......... more Truck, Odd, Handles Large Caliber [Fear ee ree rare Electric Truck, Train of Small Trailers I SURE SI Na Sl a veh far Bh Oe caccnl direst tla ah Electric Truck with “Fork” Makes Facile ey CI ss 5 a :56 ww dite san ed oabe 0 00 Electric Unit, Tiny, Heats Household Water Supply Electric Vaporizer for Purifying Air....... Electric Vessels, Naval, Speedy and High I aie dn oka se 2 eis ate A adh. aw OW ele ae Ge Electric Welding, Rivets in Steel Truss Re- OO SE a ere eee eee Electric Wire, Broken, Leaves Indelible sane Electric Wire Connection, Right Angle Electric Wires, One Piece Armor Protects. 856 264 “109° ae —

Page 21

08 POPULAR MECHANICS INDEX, VOLUME XXNIII, Electrical Connectors, Snap Fasteners as... 465 Electrician, Ladle for Soldering Wire Joints Sree ear rrre 462 Electricity—Accessory Permits Double Use 8 eer rr eee ree 705 Electricity—Alternating Current Used for French Telegraph Office.................. 494 Electricity—Argentina Plans Monster Hy- Ec wese be CaoO eda ha sees eae 427 Electricity—Battery Terminals on Bench or , SeenneEee ONG. tccareekesdens sn dan 444 weed by Year, Feature of New Town ses _ _ RRS errr eT ee re eee Electricity, Churn’s Dash Paddle Run by. 914 Electricity—Circuits for Three Way Switc hes 955 Electricity—Current Operates Gas Meter 565 Electricity—Dynamo and Engine a U nit in Ce Tes cai d eWowis kA Ceo obd 437 Electricity—Electrical Test Connector...... 62 Electricity—Electrolytic Rectifier for Charg- . ££... oR rae eee 459 Electricity—Emergency Substitute for Dy wih e eh wile oe kbe a ewe e Aa ek eee ee ae 626 Electricity Extracts Oil from Water....... 244 Electricity, reine by Gaining Converts.. 711 Electricity—Faults in Concealed Circuits. 765 Electricity—Fuses Installed in Duplicate. 781 Electricity Gauges Shell's Velocity as It is en Ce WERE Cs sacagacce ca eae ces 568 meeatety—ssenter Distills yasoline for ant TE 656s. cenwhebeds 0g. b bn 0050040005006 68086 Electricity, Highest Dam in Canada Gen- ek Wes oko nd bee ce sageegues 681 Electricity, Italy Asks Belgium to Convert k. SPER eee rrr a 223 Electricity, Large Dasher in Newest Dish- ... ££) |b a eer 806 Electricity, Lawn Mower Run by, Weighs eer ara eer 805 Electricity—Marksmanship by Magic....... 464 Electricity, Melting Pot Operated by....... 754 Electricity, Not Explosives, Likely "ts Win SG Ec dn i ‘dat dh a We Ws rio at aN la a 502 Electricity—Odd Use of Induction Coil SO. c 10006 seen ne eee Ke epee s 437 ee ees ens Alternating Cur- 785 Electricity, Roller Skates Run by.......... 760 Electricity, Sewing Machine Operated by, Travels Around Mattress..............e6. 892 Electricity—Snap Fasteners as Connectors. 465 Electricity, Static, Not Matches, Cause of Fires in Texas Cotton Gins.............. 664 Electricity—Telephone Generator for Elec- Sees ene (GG POOR, casa caansvcdsascc 621 Electricity—Testing, Easy, for Dry Cells.. 470 Electricity to Eliminate Towline in Marine Transportation, by A. M. Hoffmann....... 864 ak pads Toy Run by Represents Modern 572 Electricity Transmitted Through Column of 162 Electricity, Trawler Driven by, Used by RR ar err eee 738 Electricity, Use Naturai Fall of River with- ee Pe Se ME 6c kescawededeehneeee eee 573 Electricity Used for Sterilizing Bath for I cn a op ta Gace Ais se Masa Wc oe 6 ob we 438 Electricity Used to Heat New Incubator.... 540 Electricity—Weight Raised by Windmill SIS ois ace ha 6us b0a oo 6 calee ee 536 Electrification of Government Owned Rail- . * h. "Serer area 112 Electrification of Railroads, Island of Re are 484 Electrocution, by Machine, of Insects in OO eee 540 — New Welding, Has Chemical Coat- ees Electrolyte, Agitation of Speeds Up Elec- Ss AEN i 60 vvecuredcsetadieens 504 Electrons in Atoms, ig a about, Chemi- cal Society Medal Won by............... 959 Mostrepavns of RK SEE Surfaces, EER reer rere 152 —— Children Given Ride by, on Snow- one Ele hants, Domestic, Motorizing to Hunt ild Species, me Ge Bh. DEE cr ecteccess 349 Elevator Explosion Danger, Model Shows... 410 Elevator in Yosemite Park will Hoist Visi- 2 6 | rR rrr ears eS 482 Elevator Passengers, Electric Figures “Call” PE Le tb re nkhs nhs SROEGAACEN ED AES OES 703 Elevator, Public Grain, at New Orleans, by es Ge MEE icc ceceeeeekcetasenésces 203 1920 21 Elevator Sign, Timesaving................. 456 Elm Tree, Ancient, Heart Yields Cedar ITI ai tartan Seni Wisk We eek ew 277 Emblem, Danger, National Safety Council IN ac cw age daa we eee ea ees ae ee eae 4 867 Emblem, Patriotic, Replaces Violin Scroll. 759 Embossing, Process for Making Paper Dies eee ree etl ee 625 Emery Cloth, Using on Round Surfaces. 776 Employes, Foreign, Factory Establishes SR er anaes 525 Employes, Million Dollar Building for...... 910 Enamel Scaling on Steel Caused by Over- 0 ERE freer 686 Enamel Ware, Manufacture of Revealed... 639 Endless Tread Attachment for Truck Frame 597 Energy, Wasted, Saving of, by H. H. Wind- ST Gt chig CAREC A RAS ER ERERACE IE Aad FES 19 Engine, Aeroplane, Salvaged by Rolling | eer eer ere 173 Engine, Airplane, Low Exhaust Pressure SE Dn cktcbvenene eee enka neewad an 540 Engine and Dynamo Unit in Home Lighting DP htettac stander ede eee det bk eaten ee Gia eee o 437 Engine, Auto, Connecting Rods of Straight- CE tices pd ea es 605s sek hens D Retbe sas anee 766 Engine, Auto, Exhaust Assists in Cooling... 608 Engine, Auto, Replacing Manifold........... 609 Engine, Automobile, How to Protect from SE Soseeevbs mas edecadpessesedeerecenewe 131 Engine, Automobile, Steel Wool Heats Mani- CONG COP Tey BeOPtIOs 0c. ccc ccccesescnse 288 Engine Bearings, Auto, Machine Quickly DEE Kctediaee vesebeanvecas caer nace s 897 Engine Blows Poison Powder on Weevily Ce cane tebe AKSORehEeA a Rees 336 Engine, Boat’s Main, Deck Winch Driven by 889 Engine, Cannon, for American Planes...... 672 Engine, ugaea Turns Shaft by Screw PR dns cc dbersbcadtineeeebenenenscess 108 Engine ee ete TMs santeoneseeens 452 Engine Exhaust Provides Sand Blast....... 301 Engine Exhaust Water Heater............. 630 Engine, Four Cylinder Marine, Has Many EET OVORROMEE 2 oc cc ce cs casesevercusereves 842 Engine, Four Cylinder, Why Breather Is PE bcc 00 cnn R6GAebSh esas tower o:00-% 158 Engine, Gas, One Man Truck Moves....... 773 Engine, Gas, Soft Heads on Piston Pin..... 936 Engine, Gasoline, Rural Road Sprinkler PE Dik scccc crt ennssdeadseneerardekate ve 734 Engine, Ice Cutting Machine Driven by... 283 Engine, Motorcycle, Drives Toy Automobile. 121 Engine, Motorcycle, Used for Power Mine DEE ndiee ao46540 2420R ROADIE Needed weOae 708 Engine Oil, Funnel Tube for.............. 478 Engine, Pistons Act as Valves in........... 687 Engine, Stationary, Flywheel Used as PE svcchowvedtekaesedesessveddetne ea 180 — Three Wheeled Taxicab Mounts Out- 887 oiates. 12 Cylinder, Is Italian Masterpiece. 256 Engine Valves, Air Pressure Gauge Tests.. 758 Engineer, Civil, sravens Case Cont: iins Complete Drafting Kit for..............-. 897 Engineer, Personal Record of, on Blueprint RR ere rrr rrr ee 844 Engineering, College and Factory Combine SO rere TT ee 78 Engineering, Highway, 115 American Col- RN IN 6 nk 6 a.6 ews 0060 035 042 ee En 0 tks 228 eB iyeressectete, in Tasmania, by Paul H DT cis cc enehddesnwhe nee e ee 71 Engineering, Hydroelectric, Tides in Bay of ET rrr ree 186 Engineering—Naval Base at Hampton Roads Gains New Land by Moving Seashore...... 212 Bagineering, New Branch of Studies to Remedy Weaknesses of Old Bridges...... 28 Engineering Supplies—New Measuring Wheel for Accurate Work............... 836 Engineers, Electrical, Use Blueprints to Give Movers Instructions............-e++4. 544 Engineers, Practicing, Oregon Demands SO ccc wn nkes saan osbeees bey eae 70 Engineers Study Plans to Preserve Indiana ES Orr er eee 110 Engines, Four, Carried in Central Cabin of pT CPT rer eee 564 Engines, Seaplane, Placed between Fuselage “-~ ip , " Mee ee ry 665 Engines, Tractor, Testing Required in Cn Conan cadens eee emh Aa lneh a ee ee 517 Entertainment, Deaf-Mutes Present to Com- Pn WI, 6s gcncdad Ose KOncee see NEES 898 Envelope Moistener, Simpic..........5-645- 945

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22 Envelope Sealing Appliance for Office...... 554 Envelopes Made in Millions by Modern Cetin cake ede ONE ROKER SES ES 352 Envelopes, Sandpaper for Opening.......... 778 Ermine, Eskimos Catch tn Simple Trap... 415 Eskimos Catch Ermine in Simple Trap.. 415 Eskimos, Modern, to Have Concrete Igloos 461 Essays on Economic Subjects, Prizes CN ee ere re 639 Estate, Doorn, Curios on Now Hidden by 0) 4S” rr ery are 416 Ether beyond Earth, Rockets may Explore. 324 Eucalyptus Trees, Bark of Yields Valuable PE Hehe chet arene Re CA eae eae Ee eae ed we 583 Evaporation of Alcohol, Oil Limits........ 132 Excavator, Dragline, Crosses Rio Grande ET SN I i ckcaccomescesasancenenns 77 Exchange, International, Complication in Makes Necessary Bank on Steamship CN a oan dhs wa hee Oe ee eee 510 Exchanges, Automatic Telephone, for Big I Oe vse Sia soca a eh a he shade a et Gk en aa iim 406 Exercise, Dogs Get on Inclosed Porches of NY MO oa we ia ohh ha gee we me pea aa 692 Exerciser and Vapor Bath Combined in New DE £206 6c shed dahse sda keen edaws bed oe 0 598 Exerciser, Bar Bell, Adjustable in Weight.. 6438 Exhaust, Auto, Assists in Cooling Engine... 608 Exhaust, Auto Engine, Is Potato Sprayer... 445 Exhaust, Engine, Is Water Heater......... 630 Exhaust Gases in Aeroplane Engine, Re- duction of, Renders Silent............... 540 Exhaust, Gasoline Engine, Heats Tank.... 452 — Tractor, Lumber Hills, Constructed 63 Exhibition, Automobile, at Paris Shows Tri- ycle Type ”}; Rr 53 Exhibition Building, Mose, Five Thousand Manufacturers to Have in Paris......... 826 ae. Enormous seate, Crystal Palace 933 Exhibition Hall, Paris “to Have World's ons Exhibition, Lifelike Model of Maori Chief on 712 Exhibition, a of Greatest Airship ae Exhibits, Nature, in New York Public School Sa ci: hn ai cok sh chi eel da ak 390 Expedition, a, Fishing Schooner to Ts dk 5 ah a iia ane Mn bok OS 90 Expedition, Scientific, to Study Flora and auna of Crusoe's Isle............esee00- 436 Expedition to South Pole, by Paul A. Jenkins 485 Exploration of Upper Orinoco and Negro i SE Th. . scsscescsseeseedvns ase 67 Exploration, Shallow Draft Motorboat to be sed on Rio Negro, South America....... 194 Exploration, Subterranean, English Scientist roposes Twelve Mile Shaft for.......... 494 Explorers Plan New apapeattion to a ole, by Paul A. Jenkins............ 85 Explosions, Coal Mine, Rock Dust to Stop.. 228 Explosions, Grain Elevator, Model Shows | rrr ae rare 410 Explosions, Mine, Analysis Detects Blown I da ha ial van eo i 0 ee 426 Explosive soneet by Message in Odd ES cenew ead kee epeen hha ae tee e ks 530 Explosives, Automatic Scarecrow Made with, | Sas eres 848 Explosives, Commercial, Tests Determine FEO OT 407 Explosives, Glacier Fed Lakes Chosen by rance as Storehouses for................ 25 Explosives, Nitrate from, Makes Good Fer- Lads, College Offers Course in Tract- Dp UR Sse ae ee ee Farmer Uses Tongs to Pick Up Potatoes. Farmers Add to Arable Land by Terracing DE. cet nena h ham adda ne RAS a eies © Farmers Buy Six Months’ nin dia wis ca Re eG ke oe Wid «hed be mae eles Farmers, Ice Bound, Airplane Drops Sup- I ie ie ela ew oe a ee ee ee ae % Farmers, Iowa, Cobperating Barns and Poultry Houses............... waemeee. Old Silo Wrecked ts Simple Meth- oO FOP EEE ST CORE ere Farmers, Traveling Schools Teach Grain PD: Ci 205 cas cenes cp hedecvsearees’ = Turkish, American Tractors Inter- es eet eerreé sehen otbes ee dawe Ga whe he ears 517

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394 319 17 78 230 388 721 243 368 338

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ce

POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Farming by Electricity Gaining Converts. Farming in Death Valley, by John Edwin 711 SS reer ere. te 339 Farms and Funds to California Home- CE pc tk che sdeke ee canta s ew ae hee ORs Os 111 Fashion Designers, Bizarre Canoeing Cos- CE OM on nnncctdckdaeeanesanesses 657 Fasteners, Snap, as Electrical Connectors.. 465 Faucet Attachment, Electric, Heats House- ete Water BOMET «occ cccccccccccccccsess 525 Faucet Combined with Drinking Fountain.. 207 Faucet, Packingless Water, Sweden Manu- ON OC ET err 584 Feed Trough, Sanitary, for Poultry........ 306 Feet, Bound, Chinese Organization Forbids Marriage with Women Having........... 438 Felt Filters in New Coffee Urn............ 384 Felt or Sheep’s Wool for Draftsman’s Pen- tn cel ii ph ee eee ne eo kes 784 Fence Post, Old, Is Fountain............... 62 Fence Post, Revolving, Acts as Tightening ED ido abies 20 ek aah Sh ae Wake wig ee ae Oe he os hw 701 Fence Posts, Boiler Tubes Make............ 774 Fences, Double, at Roadside Prevent Auto DI. ¢raacssnetbeebohe Gos 6660060004 731 Fender for Yacht Tenders..........-.....5. 767 Fender Turns Under Weeds While Plowing. 609 Fenders, Auto Lamps in, Glare Obviated by. 705 Fenders, Automobile, Leather Shields for... 64 Fenders, Tin, for Toy Auto.............0005. 477 Ferris Wheel, Farm Tractor Turns......... 192 Ferry, Car, Makes Floating Dock for EE tenth acd OEE OES Od wah e Se XO 48 perez Guard Rail, Com ressed Air Operates. 841 Fertilizer, Cistern for iquid Manure Stores 869 Fertilization, Proper of Soil, Simple Chart SN sca k pa aweshs eb euSd 6054805004 600 674 Fertilizer, Nitrate from Explosives Makes.. 190 Fertilizer, Nitrogen, Britain Plans Huge Plant to Extract from Alr................ 688 Fertilizer, Sulphur as, by Robt. H. Moulton 94 —" Fall, Nebraskans Serve Pop Corn or Fiver, Cellulose Content of Found by New CE chee hs wees ORS RRKe sane SS 66S 6.8 ae 516 eR ere 939 Fiber for Hammer Handles................ 925 Fiber, Japanese Seaweed, Mixed with Cotton 669 Fiber ee mae for Welders, Protects GO MOD 6 cen sep ened sae bn ctongenss 391 Fiber, Valuable, Bark of Eucalyptus Trees ses Field, ioowns. Striped “Airplane Hangars DP tinh tknees Wee ROnw ah hee anak eee 855 Field Pests, Fruit Tree Saplings Protected from by Shields of Yucca Bark........... 52 vies. Caprifig Orchard Increases Production a Figure on Target, Accuracy of Shot Proven ase Api hdo taaed ance. ene al alee nee ee a ack oo = ond. Mallet Combined Make Ice Chop- oat RM “EOOE. ccc ccc esccceseeesececsesesseses File. Both's Skates Sharpened at Once With... 304 File, New Spindle, Arm on wenese Papers... 602 File, Round, That will Not Stick........... 924 Files, Old, Handy Tools Made trom ae sna wie 605 Filing, Irregular Ripsaw, How to Do...... 451 Film Exposure Record, Moving Picture, 500 ST Mi. tk net sbankenns G0bnese hae che 383 a Factory, Siberian, Evolved from Junk, 5, \ eer rese Sse 887 a — Picture, Protection for While a NE = 6S ahd 4 aig atch Bia etek Othe ae tee —_ ix. Chemical Fire Extinguisher 580 Films, Roll, Tubular Bath Quickly Develops, Fixes, NT ce 371 Filter, Air, for Tractor Made from Tin Can. 138 Filter and Recorder, Fog, Siphon Controls.. 201 Filter, Camera Ray, Amber Spectacles as... 775 Filter Clarifies Ditch Water................ 925 Filter, Gasoline, Glass Sr in Catches Dirt. 248 ee, Gee OER BG ORs iv cccapenseesuccs ee oee 933 - Plant, ion Falis, of Most Modern 725 Filters, Felt, in New Coffee Urn............ 384 Filtration Piant, Model Explains to Visitors 278 Finances, Siberian, Complicated by Great WE Oe BOON, b.abcicec cawsé66sscestedee 257 Finger | System for Autoists.......... 895 Fingernai eee of Prevented by tt ne vccssceopedstatsececatade ee 451 Fire Blazing Pohip at Panama, American Submarines Sink.............eceeeceeeees 799 vy Danger in Canadian Forests, 400 Miles of Telephone Wires Reduce............... 501 4 23 Fire Danger in Mines, Magnesia Stucco on SOON MENON, co ccce cc cssccesascescsese 560 Fire Department, San Francisco Boy Scouts Coéperate with in First Aid Work Ter e ee Great Tar Depot in North ove Fire Drill in Mines, Odor Spreads Alarm for 595 wae Engine Boilers, Gas Burning Heaters 198 se el Mie deine wae a a ae AON Fire Extinguisher, Ash Can as............. 612 Fire aca ements Chemical, Protects Movie - a 2 Fighters, Blazing Cars on Trestle Per- ose SE civ a = Wak OWA aa ORNed ta es ew ee eee Fire es Apparatus on San Pedro PS: -6catahaseeseee dd 6 a00bp cikeaethn he 586 vue Fighting Tools, Portable, Railroad Uses 937 Fire, Flood, and Lightning Destroy Texas Bp EB a a APO Ni RR TER AI NRO 12 Fire Fn Scraps Protects Roped Boxes.... 781 Fire in Gold Mine, City Water Supply and TWO Crees GOOG. occ cccveccccccccscces 238 Fire Irons for Auto Camping............... 948 Fire, Liquid, Force Spray Pump Used for. 948 a Prevention Lecture Given Seattle Chil- oni Fire Protection, Heating System Provides.. 777 Fire Ranger Builds Stone Cabin Above Tim- iE Aneta. 6 wha kh e hn sew sets One kame 20 Fire Risk, Individual Hangars Cut.......... 361 Fire, River of from Mauna Loa, Illumines ER Pr re 32 Fire, Tragic, Falling Walls and Pepper BC ia ee a knee as a bee eke 574 Fire Trucks Collide in Busy Street......... 24 Fireless Cooker, How to Make.............. 448 Fireless Cooker Range with Gas Attachment 593 Fireman Makes Nonskid Chains for ee 568 Fireman, Michigan, Devises Hose Clamp. 694 Fireplace, ERiGing: im Bummer... ..cccceseccs 926 Fireproofing of Wood, Chemical Used to Fill DP Avetexes canada ned Keak teden eee ae 108 Fires, Forest, Bombs Impractical in Fighting 360 Fires in Mines, Mud Jet as Efficient Extin- SE OF Side bes ton sase te endtneiedeshese 34 Fires - Pe Cotton Gins, Matches Not ROT vctecde kes beeds ae aveesinn ts Gn Ska Ba 664 Be nn od Bombardment Rids City of Bird | EP eee 433 Fish Hatcheries, California, Distribute Mil- lions of Fish in Streams.................. 814 Fish—Herring Smoked in Primitive Way. 614 Fish—Live Bait Kept in Fresh Water....... 946 Fish, Mountain Brooks Stocked with, by W. oe. . SRO rere 689 Fish Pool, Concrete, for Lawn.............. 748 Fish—Salmon Provided with Second Mouth et Sn. a5 BG Aine 0 WO dias b om Sn oad ws a one 432 Fish, Salt Water, Huge Trap for Folds in NE a's so 'a'6 be OR ni Ad we ab ah echo ae i 38 bo Scaling” on Steel Caused by Overheat- Ciks eh Cehde este ch eee ns ade ba bo e.0 056d 686 Fish, Schools of Found by Microphone...... 34 Fisherman, Cis ndk.s ss bbe a3-0:00< 948 Fishermen, Mexican, Murder American Air- Pe srenawebh kondeenee Gud cakes denedd bheaw 105 Fishermen, Pelican with Mended Beak Gets ... & | RRR rer Rie 921 i Ip Want Scaplanes to Bomb Por- DT oc thne + snk hah) CR ae Melo eee alae eee 542 Fishing Craft, New, Electrically Driven — . 2 ARPS ee Sa 738 Fishing—Harvestiag the Giant Pacific Crab, by Lawrence William Pedrose........... 877 TS pregerve Pirates, Motorboats Hunt, ese Ficking & Sehocl, Tialy’ s First, Opened........ 328 Fishing Schooner, Next Arctic Expedition to Sf Se rp epee 890 Fixtures, Electric Light, Made from Gas PE «<cné cabins se penheaeene Reads ka eben 311 Flag, Altered American Causes Near Riot.. 404 via & Spat from Swaying Pole by Daring 98 Flags y we for American Graves in DE S4ctci winnie the Fines bae sdk emnntoes 699 Flagstaff, Huge, British, Cut in Canadian TE tit achh ht he akckeens ba thas wad Kae dkhn es 48 Flame of Small Torch, How to Improve..... 458 Flannel as Pincushion on Sewing Machine.. 937 Flare, Improved Aerial, Gets Official Tests.. 852 Flashlight Bulb, Clock Illuminated by...... 785 Flashlight, Electric, Has Tilting Battery. 105 Flashlight Smoke, Trap Catches............ 629

Page 24

a ——- oe ee ee — > ME 24 ie Car, Special, Tanks Carried from Arse- I Aa oh Wie eee we ial alain Dib WE wk ew we Be ek ee 905 “Plat” Foot, Insole to Correct........sscees 592 Flatiron, Electric, Has Curling Iron Heater. 275 Flatiron, Electric, Has Lamp Attachment... 435 Flatiron, Electric, Keeping Cord from Board 605 Flatiron, Electric, Walnut Sacks Rid of Cod- 8 OE re er re errr rr 858 Flax, New Machine Ripples without Damag- >. _ QAR RAFI a era p Sais 348 Fleet, Motorboat, may Help Solve Cleve- eB BS aaa 737 Fleet, Pacific, Mail Planes Keep Admiral in Touch eer rea 357 Flexible Coupling Device...............ee08. 36 Fliers, American, Prize Contests Open to... 959 Flies, How to Catch on Ceiling............. 957 Flies on Ceiling, Special Swatter Gets...... 795 Flight, First, over a Peak of the Rockies, by J. IIS a4: a autia: eibia a 9-4 el Ae 0 bo owes 100 Flight, Successful around Country, Big 2 RR Reg nr ier 213 Flight, Trial, Made by Navy’s Torpedo Plane 524 Flint Arrow Heads, Ornamental Design of.. 629 Float and Fuselage, Seaplane Engine Placed ESR ris rp a ee 665 Float, Hollow Metal, Paraffin Repairs Leak 460 Float Valve for Restaurant Water Cooler... 929 WUORt, Wter, LOVOTMMRE BY... cc cc ccccccccece 319 Flood, Augusta’s New Levee Foils.......... 756 Flood Covers Automobile Park at Coblenz.. 500 Flood, Fire, and Lightning Destroy Texas EN a's esi asst Aches a & oak wie ark Sele wae ebm wince 12 Flood, Unborn, Obtaining Secrets of, by J. PEP ear rer etree 557 Floods, Cement Bridge Undermined by...... 876 Floor, Automobile, License Plates Protect.. 126 Floor, Garage, Gold Mine Shaft Sunk STI ii ec ak Ws dics aida ho aa AE J Bde 0 we 874 Floor Lamp, Bookshelf Built into.......... 796 Floor Lamp, Pedestal Makes of Table Lamp 753 Floor of Automobile, Auxiliary Cells Stored ff 9 ee ree 136 Floors, Bridge, Combine Wood and Asphalt in 202 Floors Built to Keep Out Cold.............. 457 Florist, Ash Sifter Prepares Potting Soil for 940 WEOUP TH PUtty BUbStitute. 2.0 cccccccccsccecs 635 Flower Box from Log.........-eseeeeeecees 954 Flower Stand with Gardboaré Cover, Elec- yo UO" ear re 306 Flowerpot, Artistic Concrete, How to Make 796 Flowerpot Bracket, Swinging.............. 787 Flowerpots, Fronds of Date Palm Trees Used by Patients to Make................ 749 Flowers, Belt of, New Orleans Has......... 221 Flowers in Inclosed Stand, Light Bulbs Keep EE st ies ne ee dhe ek ad eae he O04. ds 306 Flowers, Real, on Ladies’ Hats............. 317 Flowers, Wild, Hudson River Park Has Signs to Prevent oo rarer 271 wigee, Furnace, All Sides Geaneh by Jointed oss a See ai NE abs aie head ae wie Ae eee 4 Oe 4 Flush Soldering for Leaks..............000. 605 Piuxz, Brasing, Container for.......ccccccve 926 Flux Spreader, Soldering..............e.005 291 i 4 Casting for Trout, Sporting Goods Store OO arrears 175 Fly Screens, How to Stretch................ 626 Flying Apparel, Feminine to be Shown at PBORBECICO! TERMED 2 wccccccctrecccsvesce 368 Flying Boat, Lands on Ice, and Takes to Air fk OO — rr rare 359 Flying Boat, NC-4, with 12 Passengers akes Long Nonstop Sara 1 "es Field, American, German All-Metal I Te a a Ain 8G KS han eee 841 org eeet Hurls Fragments through Brick - iewaest Used as Radiator for Stationary I dali i 06 thin te Hse dh sh oA. cle it fo 180 Fog and Pa Hinder Aerial Map Makers PN nos i hath hee tod who aed ace ew ae 484 Fog Filler and Recorder, London, Siphon Canad nko é Wk OR ERERS Rok ainda 201 Foliage Growth, Perforation of Plant Root IRs iissiny ic he aoietth te thls sh 6, wk dds a hale’ ee nd 840 Fonts, New Linotype Matrix Grip Changes Quickly ee 854 Food Boxes, Protected, for Birds........... 43 Food, Canned, Detecting Copper Salts in.... 946 Food Chopper, Coarse Sandpaper Holds Me os 6 a aa ba. 60 wh Sew aw oe 42 Food, Incidental, Has High Nutritive Value. 588 Food Preservatives, Spices Prove Valuable ere i Mis Cewes Se Cawawds ino db ude) we Soe e Oa POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 ———" 2 een RAS Seer eae nee Foods, Nutritive Value of Study of New Council See hie Wake ok RR ate We oe Bae 4 ee Foot Scraper, Discarded Currycomb is...... Football in River, Free for All, Town Plays Football, Luminous, Eastern Coach Adopts.. Footbridge, Novel Railroad, Has Two Stair- aa eal Oe aielin ks Paw Maal wate ek beak be oe wie Footholds, Worn Rubbers Converted into... he oe es ee Ee ree Footwear, Trees for with Hanger Attach- err err ee Footwear, Worn, Cycle Serves as “Ambu- I tna kde gsr Ge aes ae aoe ak ood Force Pump, Portable, Steamship Oil Tanks Filled by Forceps, Useful in En dhemine-ak de ikke iad osha swe Can keel Foreigners, Factory Establishes School for ky | eee Forest Camps, Truck Serves as Dental Officein Forest, Canadian, Yields Huge British Flag- st Chemist Analyzes Suc- Physician’s Worn Out, a — Fires, Fighting by Bombs Imprac- tl acid Na i eases Ra oh inh al is ae eb a Ow Forest Fires, Mountains Denuded by may be MOSSOROS DY AETODIBNGE. «c o.0 cece ccsccceses Forest Land Given Chicago for Zoo Garden Forest Lands, Canadian, “Planting Board” ee voc ccacbaehewneewaseen ae Forest Patrol Stations, Canadian, Telephones Link to Reduce Fire Danger............. Forest Playground, Chicago's, Serves as CE CEE cc dcacdvcewekeeuneececeens —, Preserve, Chicago's, 2,500 Acre Avi- DE tice be teaLb bed bEey ehh aes secre we Forest Products—Brazil Develops Anhinga i. el. eer re Forest Ranger Makes Long Stairway of Pe DE WOO ceca cc aseeeneess ees Forest Rangers Use Hollow Logs as Water PE cnr CAR eae a ae dee. eee we oa e086 Forest Scene Is Window Display........... Forests, Alaskan Spruce and Hemlock, can Furnish Pulpwood Forests. Rodents Classed as Vermin Help EE caress UR ENh een waded Ke hake 6 es Forge, Testing Tool Steel at................ OC GU GOS BEGG e occ ccc scccccsccssces Fork, Hanging, for Pickle Jar.............. “Fork” Makes Electric Truck Facile Fur- RR errr ee errr ree Fort, Border, French Airman Photographs... Fortress, Helgoland, Dismantled to Satisfy . oe... Pere errr er Fortune, Small, Pair of Lace Stockings EE seth Rum khhndnd ob ee de tekak saad ee oe Fossils—Flying Reptile Skeletons Found Wee GE TOMBE. 200 ccc csccseccccecsesces Fossils of Ancient Seaweeds Resemble Mod- CO PED on 600 66 0scb nicked esecbers signe é Foundation, Concrete, Blast without Dis- DE EE vcnewetonegse0sboenend dar eees» Foundation, Marble Bandstand Moved with 8 Foundation, New, Averts Warehouse Col- DT che kta ceded sawks eC OnGeCAe DLR e de Ke Foundation, Old Smelter, may Be German CE DE cin hase ne bd s0dee £04 Beas hae os.8 8 Foundations—New Concrete Process Makes Many Forms of Piling. ........cscescssees Foundling a age Receives Babies on Re- Uh. rrr rrr rr Foundry Ladle, Drier for Lining of Mounted on Two Wheeled Truck.............+.++. Fountain, Drinking, Combined with Faucet Fountain, Drinking, Well Supplies Water for Wowumteim, JAPGIMISTS FIA. «occ cc cc ccccscces Fountain Nozzle, Drinking, Guards Protect Fountain on Ohio Farm, Old Fence Post Is.. Fountains, Drinking, Supply Miners with Pe EE orca wene deta di dde swore arnanee Fowls, Bar Prevents from Roosting in Nests Fowl, European, World War Decimated.... 2 Fox Farm, ee errr Terres re F epeamaig and Pack Cross Stream on arr rrr eT rT eT Tce re TT ee Frame, Counterbalanced, for Grinding Plow- FEO PET Pee eT OTe Japan Starts with Canadian Frame for Painting Rowboats............. 9 Frame, Grindstone, Made from Old Bicycle. . Frame, Light, Changes Bathtub into Bed... Frame, Moving Picture, Hairpin Tool as CUE aednddbecddecasesddeteseee nese 564 48 360 391 397 —

Page 25

362 316

Frame, Picture, Made from ¥ sanste Mat. cccce POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920

Frame, Picture, BOS TOOT sc cecccccasseuses 626 — Residence, Brick Building Pedestal 881 errr re rrrr re ee Frame Residence, Concrete Front Beautifies 370 Frame, Wheeled, with Auto on Top, Tractor Is 831 Freight and Passengers Carried by New SE CAs 6 occ c tecescanceseseoses 82 Freight Car Overturns Diner in Collision. 427 Freight Car happen Huge, One Hour Gain a PE PE ca wedna. 6 eb enks sean a heb) 6 e008 -» 818 Freight Car Shipped by Auto Truck......<<-. 706 Freight Carrier, Truck, and Trailer Excel DE GE cancdvectausncasadcessdenegar 204 Freight Cars, Trucks on Runways Unload.. 769 Freight Service, Railless, Planned for PEE 64.0 ss 0etienebsbbauree awe ae eae 631 “Freight Trains,” Floating of the Missis- sippi, by Paul H. Woodruff........c..-0- 363 Freight Transfer, New Method of Simplifies 872 Freight, Unusual, from America to Far East 198 Freighter, American, on Fire Submarined in Panama Canal EE OR err oe 574 — “Lord Dufferin,” Repaired in ” eee Freighter Built with Twin Cylinder Hulls. 185 Freighters, Eight Wooden, Japan Uses as NED i 6.0.5 42664 oo Rb essere bwebn dane 850 Freighters, Several, Detachable Stern Serves C6 FONE BOG sc cccdeccdscennecasence 321 Freighters, United States, Set New Stand- ards, by Lawrence Wm. Pedrose.......... 669 Friction Makes Iron Adhere to Concrete Is PE <n tCkd ca bwe sah CCE Dek ae eens 102 eo Simple Rotary Pump Reduces to 137 Friendship, War Time, Pistol Grips as Me- PE £6 did nbn whe hcenice te eedeet akan es 69 Frost, Prevention of on Show Windows.... 125 Fruit—Alligator Pear Contains Much Valu- SM cicvietec phe mae aie Adee aes cea} 884 Fruit and Vegetables, Any Size, Whirling PT PE: <corvtcnkckneVekeaes tanh px eee 759 Pruit Baskets, Handle for. .... cccccccsecsecs 961 Fruit, Dried, Press for Uses Cam Instead of gC” eer Gcerenens 745 Fruit Jars, Glass, Holder for.............. 319 Fruit Pickers, Gravity Operated Machines DE Cihvtktat canst ateebeks tb abwveba cures’ 182 Fruit, Scaring Birds from.............. 798 Fruit—-Stoneless Prune Has Edible Seed. 713 Fruit Trees, Citrus, rerrEeeTE “Gasser” ee Oy a cotigedesenssnees 65 Fruit Trees—Yucca Bark Shield Protects Saplings from Field Pests........0-cccee. 52 Fruits and Vegetables, Raw, Respiration Governs Preservation of............sec008 254 Fruits, Citrus, Rich by Products ae 68 Fruits, Spices Valuable as Preservatives of. 278 Fuel, Artificial, Closely Resembles Coal. 654 Fuel—Facing Coal Famine, French Try Sub- 0 Rr eer rs ary tet 76 Fuel, “Hamburger,” Aids in age | ‘Famine. 335 Fuel, Meter Shows Auto’s Use of............ 113 Fuel—New Coal Fields in Portuguese East Africa to be Worked by British Financiers 32 Fuel, Oil, and Preheated Air Make Furnace PRT ree errr eee 701 Fuel Oil ean in Chicago Schools DE CEE sencadehasaonenea chan bens ea ae 540 sy Saver, Adjustable Valve on Oil Burners 989 Fumes, Ammonia, Gas Masks Protect Work- 9g Ren en ras 390 Funeral, Airplane, for Dead Airman........ 526 Funeral Cars, Elaborate Auto Carryall Is... 818 Funeral Gondolas, Venetian, Suggest Bygone RFC ETC rrr 230 Funeral, John Barleycorn Figures Impor- rae ree ee 59 Funeral of Mascot Dog, Children Attend.... 601 — Parasitic, Sweet Potato Crop Ruined 529 OF Sanishas a sara dh lca wh ai a ode SO ee ake Aik Fungus and Insect Killers being Studied by PE done <cine St tabiecaee abbas ee bae ea 264 Fungus Destructive to White Pine Spread Dr COR TOUGORs 0 cic cc ccevccecrecccsecce 574 Fungus Disease, Apples Saved wae by Cut- i Sn: sinchscknctheseeehe6s00.0.6 60s 648 Funnel and Measure Combined.............. 632 Funnel Attached to Neck of. oS ere 768 Funnel Has Breather Tubes...............4. 456 Funnel, eee and Offset, in New Oil Ves- os6 Dt Givehind sek eek bib hehe Weekes Choe 6 eeaee Funnel, Oda Shaped, Gasoline Flow Im- proved Se 4eedandneeeb beh enna deed beseiaee 852 Pummel Bpeut Cor GUGAR. ccc cccscccccsessve 4 Funnel, Steamship, Falls on Deck of Lighter 811 Funnel, Tin, Lamp Reflector Made from..... 140 Funnel Tube for Auto Engine Oil........... 478 Funnels and Plates, Ship's, Make Queer ED 5.64.00449 60600 5b6000' 000 as Sad 667 Fur—Alaskan Seal Herd Doubles in Eight PONE kin bes sé eckka deeb seen cacdedeetesouee 706 Fur Bearing ‘Animals, Trap Device for PE cc stentianehe ti adieatebhe ete eans 471 Fur, Beaver, from Protected Herds Yields Large Returns to Trappers............+. 717 Fur, Japan Starts Fox Farm with Canadian Ee hedcarecedeesseeeusenenesecdi ae 826 Fur Neckpiece, Lost from Plane, Advertised SOG TE POE sc ccc or cca aresovernetaxeeseons 25 Fur Pelts, Colder Climate Increases Value of 207 Furnace, Annealing, Water Seals Keep Air CK CE cick ee scence esas Red hdSOes 04 6RELEH ERE 505 Furnace, Bellows for Cleaning.............. 621 Furnace Charger, eT ‘Attached to Elec- CEES Oe Ce OG, occ cc aeacdsreservecacss 235 Furnace, Electric, Bupantiags Liquid Con- Se SE Geran ere kded dn eecepecesesesnues 256 Furnace, Gas Water Heater Auxiliary to... 300 Furnace, New Gas, Economies Effected by.. 860 Furnace, Oil Fuel and Preheated Air Make DEE excivuvenasicckaeehnecbakadeens ake 701 Furnace, Outdoor, Concrete Silo Used to Build 28 Furnace, Portable Oil for Riveters......... 388 Furnace, Revolving Electric, Has Many Ad- DOE Ashen dene ehdse seeie saseeeh so skt 251 Wages Rod, Jointed, Cleans All Sides of 942 Purnaee, Small, with Big Pipe Keeps Large Dt SD icvinaceds teeta csbusvdadene eee 62 Furnace, Steam Generator on Moistens LE arr rrr errerrrerrr tT freer 110 Furniture and Toys, Grammar School Boys DE sce ctin inn baxbimtoanseees awkhe oheeb es 441 Furniture, Artistic Bamboo................. 789 Furniture—Boudoir Table Has Many Uses... 434 hep Three Piece, for Dining a PernitereColar Chest Has Elevating Top DE ove deed tebe eibawth awed dnsasenenks eae 255 Furniture—Cement Panels and Sea Shells DN .citcveeahenk dad ene hee newness bed 898 Furniture—Chair and Desk Combined for POE on éntc0p carer sacdneccenconne 671 Furniture—Chair Back Repaired with Tire 997 vuralture—Ghaie Has Auxiliary Rockers. 666 Furniture—Chair Slides like Drawer beneath SE EE cco vase ohn OES 060 CEN wn eS 264 276 Furniture—Chair with Built-In Desk....... 464 Furniture—Clothes Hamper, White Enamel, Has Tilting Basket and Drawer.......... 255 Furniture ombined Chair and Desk Pre- Pome TOURE TROURROES. alse cc ciccccccccees 219 Furniture—Phonograph, Commodious, with Two Amplifying Chambers.............. 255 Furniture—Electric Fans Made to Harmon- Be WIM WUPRIGMINGB. ccceccccesccesssccss 434 Furniture, How to Prevent Season Checking Oe Ge CE GP nw node ncansntsccesveiséve 407 Furniture—Piano Seat, Adjustable, me Compartments for Music By esteeuwwe le 255 Furniture—Rocking-Chair Stop ............ 786 a Collapsible. Has Revolv- oss varmiture—Pabbo Top, Odd Division, Permits Se Ge MR doh cca decesececnvcwesceee 755 Fuse Casing as Box for Drills.............. 765 wuse tive. * Old, Makes Nonheating Knob for 448 Prt era Fusel Oil, "aicohoi, and Benzol Mixture as a 631 Fuselage and Float, Seaplane Engines ee EE on cc te ceees shee ees enone se 665 Fuses Installed in Duplicate................ 781 Fuses, Tongs of Fiber and Wood for wena MT ScbSAsdwcdbeeVetaeeesvisese re suew _ . 381 Gaiters, Buttons and Laces Insure Perfect Sees Re ee Pre Ae 114 Galleon, Ancient, Wreck Yields Puzzling PE inn dt ee Wee eMeeRhe se Ohat te heeend 61 Gallery, Testing, for Grain Dust Explosions 269 Gamble, The Desperate; a Prison Story by Pe. a MINER, pc ccc cecceesdtonsreouseses 166 Game Board for Invalid.........s..seeee0 638 Game, Pool, Soldiers Play with Croquet Set.. 697 Game, Trap Device for Drowning........... 471 Games, Olympic, Marathon Course for Se- DEE 86 64 G6RG EMER OCH ESREDSSSAD TCR OTRO ORS

Page 26

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aE

26 Garage Air Hose Rack, Crankshaft Makes.. 578 Garage, Cave Under Residence Lawn Serves 582 ae ha day kW dasa acai at hs cae A d aca a t Garage Device, Cradlelike, for Repairing PD tales 4 cid bitch eeadctteaw eens nat ewes 656 Garage, Electric Lighting System for....... 292 Garage Floor, Gold Mine Shaft Sunk through 874 Garage Grinder, Auto Drives............... 779 Garage in Los Angeles Rents Autos without EE Td in ara oh aia A dk seal he Wik Ae te eh a 165 wanes, Modern, Electric Truck Moves Cars 290 Garage, Old Ice Tongs for Tire Work in. 457 Garage, Radiator Heater for................ 290 Garage Roof, Motor Bus, Has Pillar Foun- dations for Second Story................. 228 Garage, Towerlike, Has Spiral Driveways... 221 Garage Turntable on Ball Bearings......... 414 Garage Turntable, Pitless, Runs on Circular PE Shade Miwa deeds Sakae eennws en ae 737 Garages, Private, Small Air Compressor for 667 Garbage Can with Perforated Lid for Sink.. 915 Garbage Collection, Horse and Tractor Com- NT ida hh ae ob Acca te oe EE 867 Garbage Consumer Built in Stove.......... 27 Garbage Incinerator, Gas Burning, for Home 915 Garden, Artistic Roof, Feature of City Fac- a OP OO KR CK eee 214 Garden Ditches, Subirrigation Eliminates.. 778 Garden Line, Self-Winding................. 633 Garden Table, Tile Pipe Is: Standard for..... 154 Garden Tools, Homemade................... 622 Garden Tools, Rack and Lock for........... 935 Garden Tools, Shovel Handles for........... 797 Garden, Totem Poles in, Curio Collector Has 748 — Tractor, Golf Course Mower Pushed ose Garden Trenches, Tool for Making......... 627 Garden, Zodlogical, Forest Land Given Chi- ERS ree ere 397 Gardener, California, Felled Bay Tree Made into Attractive Seat by..............0008- 748 Gardening—High Speed Potato Digger...... 625 Gardening, Water, a New Floral Industry, by John Edwin Hoge...............00000% 252 Garment Industry, New York's, to Move to PE ccckcde nc acecenne eee aden 6 438 Garment Snap Fasteners as Electrical Con- CO Err ere ree 465 Garments, Torn, Hair Used for Mending.... 473 Gas and Coke, New Coal Range Produces PORE PPT er rere 2 Gas Attachment, Fireless Cooker Range Has 593 Gas Bomb Shields Contents of Vaults...... 51 Gas Brackets, Electric Light Fixtures Made a Wiel cae nae he ei Sins ap es Smee Oak O60 eel 311 Gas Burner, Spark Plug Cleaned over....... 777 Gas Burning Garbage Incinerator for Home 915 Gas Burning Heaters for Fire Engine NAS alatiih Sic AAO, 550-85 m ocd d Woda one 0 198 Gas Burning Instantaneous Water Heater.. 936 Gas Engine, One Man Truck Moves......... 773 Gas, Exhaust, Flour Mill Heated by......... 302 SSE Glo cccccscctsasececsenss 788 Gas Flow to Water Heater Stops When Pilot Neh tnn ci dian b ais, ws oa ee ache ee aan ae ew 916 a Furnace, New, Great Economies Effected 60 Gas. Heated Glass Cutter like Soldering Tool 911 Gas Heater, — Removes Locomotive Tires Rapidl Ree Se Se 187 Gas Holder, Diaeeet, rey? Steel Floor for 33 Gas, Illuminating, 16,500,000 Cubic Feet Saved by Modern Coke Oven.............. 430 Gas Jet, Wire Cooking Bracket for......... 136 Gas Jets, Lubricating with Vaseline......... 777 Gas Mains Leak, City Street Spouts Fire.... 871 Gas Masks Protect Workmen from Ammonia ih star in icp St dae Bh 6 ON lk a I Ow 390 Gas Meter, Electric Current Operates....... 565 Gas New Combustible, from Common Ma- SN ccudekdnepess 6ak on OE pie & ade dake 738 Gas Ry and Chains, Tire Removed from ase Gas Pipe, Petcock Extension Handles Made SY, takin PW UMe cae ta een hee 141 Gas, Poison, Used as Disinfectant during Paris Typhus Epidemic................... 725 Gas, Poison, Versus Poison Gas, by Wm. A. Pe Crete nteihecconekGh tae nemaned 4 693 Gas Producer for Motor Vehicle May Be Sub- DEPRMSS TOP GAGOTIMO. oc cc cccccccccceccesive 30 Gas Supply, Base Charge for on Heat Units 682 Gas Supply, Big Tank to Assure Chicago... 411 Gas Tank and Pilot's mean Change Places in Remodeled DH-4’'s...............00000: 345 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Gas Tubing, Tests Reveal Dangerous Con- “SES er ere 02 Gas, Use of for House Heating, by Paul H. i eek ae eens wad a ib ada be sae eee SO 819 Gas Valve with Spark Plug Acts as Auto EE Oe share db a ead det ne Os ae ek a dae ee 589 Gas Wells Bring Wealth to Obscure District 735 Gasoline and Bits of Rubber Make Cement... 607 Gasoline Car Wrecked by Broken Rail...... 654 Gasoline, Coin Operates Vending Machine for 565 Gasoline, Electric Heater Distills for Test.. 421 ane. Electric Primer for Autos Vapor- 733 RSS a ee ee a aa eae Gasoline Engine, Flour Mill Heated from TN eee 302 —, Engine, Rural Road Sprinkler hs x oh ene a aa Sek wade ewe aa eA 734 Gasoline Milter, Glass Trap in Catches Dirt 248 —— Locomotive, Midget, Operated from ee I 9 eal sak iin tin dk Oo ah ae a oe ah o> 566 a. ine Motor Vehicle, Gas Producer for. 230 Gasoline, Odd Funnel for Gives Improved 2 ke SA rere eae 852 Gasoline Thieves, Motorists Prey of........ 898 a ~ ey Torch, Electric Lighter on Bench i Ktitscech ehh DAU ER ADS MEN e MOEA Dashed ee 447 Gasoline Tractor, Mowing Attachment for.. 725 “Gasser,” Mechanical, Kills Citrus Grove IR RR ee ee ee 65 Gate, Farm, Works on Wheel............... 296 Gate, Lock, Cattle Held by for Dehorning... 127 Gate, Self-Closing Drainage, Water Controls 883 Gate, Spring, Closes Railroad Crossing..... 117 Gate, Stock-Proof, Built on Farm........... 124 Gate, Tile, for Small Dam.................. 942 Gatemen, Warning Signs Replace at Grade RT <checeee nape th ebavaseenvea cass 594 Gateposts, Artistic, Cobblestones and Clinker EPR re 749 Gauge, Air Pressure, Tests Engine Valves.. 758 Gauge and Safety Valve, Combined......... 18 Gauge, Circumference, Piston Ring Diameter Sekt haChd eee lthkbok bial a @ a0 bee 419 Gauge, Cream, Bottle Makes................ 624 Gauge, Depth, Made from Broken Rule...... 312 Gauge for Composition Shingles............ 285 Gauge for Drawbar Pull of Tractor......... §31 Gauge for Gear Setting..................... 452 Gauge for Lasts Assures Correct Form of a ah Se eek nck nid bs doh ww aed 0 4000 0.6 182 Gauge Glass Reading Made Easy........... 769 Gauge, Holder for Twist Drills Is.......... 875 Gauge, Soil Pressure, Tests Strength of ESSER hE PR ere arta Serene 656 Gauge, Surface, Built onfo Square.......... 631 Gauge, Tire Pressure, Attached to Hose Con- EE Sata e rand hee dae ae wo ap Oa dee ewe 940 Gear Attachment, New, Many Speeds for . Se rere etree 442 ame, TOW, TOONS TOR... ccccccccccccescses 614 Gear Setting, Gauge for.................... 452 Gearing, Unusual, Used in New Lifting Jack 208 Gears of Improved Motor Truck Axle in _.. 2 Re eee aa 405 Geese, Canadian Wild, New Zealanders Ex- i Se vic cneaann ds ceaweee need aaee 212 Gem, Biggest, Recently Found Black Opal Is 282 General Pershing, Costly Sword and Scab- Ne errr eee 421 Generator Attached to Tractor Forms Elec- tric Light Plant for Kansas Town........ 270 Generator, Electric, Parts Made of Concrete 368 Generator, Telephone, for Electrical Testing RRS re See are 621 Geologist Advises Haste in Study of Pacific 74 Geologists Aided Armies in World War..... 322 Geology—Fossils of Ancient Seaweeds Re- semble Modern Plants.................... 598 “Geophone,” Nickel in Diaphragm Improves 737 ar Botulinus, Culprit in Ripe Olive Pois- ese Germ Kulling Air Injected in Nose by New I ead hah kas are Cae cecal nb aoe ek 501 “ee Proof Drinking Fountain, Doctor In- see Germicides, Mask Containing Sold for Gen- i Awaieah wk ae ahh We een tad Oa e ee ee 844 Get the Worcester Spirit, by H. H. Windsor 507 “Ghosts,” Taking Photos of................. 793 Gift—Easily Made Hatpin Holder........... 157 Gila Monster, Bite of Fatal, Hospital Rec- i es oh a kiwe éemhk ah .4 a6 4a 6 65 6 8k s 799 Gila qesmater. Why Rob of Venom, by Robt. 9 Sel ad Mie sh del DOR ih ioe’ oui aes et al 4 “Gilsonite.” Variety of Asphalt, Found in De ¢thdis6dcee ede eo nSeeenec wenn 661

, A

Page 27

270 368 621 = 322 698 737 ————# —— a ee POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Gins, Texas Cotton, Fires in Not Caused by NII, 2: 6 dash det ttn or ose who ie A a alo le ces 0 ag Box, on Ship’s Keel, Tunnel for Pipe SE Avabesed es ohkSOObs dye tN ad S Eee ED Girder Dropped from Crane 7 into Shop Basement re ee Givis, Blind, Make Books for Blind Soldiers Glare, Auto Lamp in Fenders Obviates...... Glass and Fork Used in Performing Trick... Glass Rottle Stopper, Sanitary, French Doc- SE trek skeaw hb ened eens oe new ie ee Glass, ge Five Miles of Paid for by One Comp Glass, PBullet- sreoot. Stops Pistol Shots at Distance of 12 F RS arr er ee Glass Cage, Airplane Cockpit Fitted with... —. Copper Washer Removes Paint Spots Nd oarathik nce aoa 6 he ee en eee mene ies Glass Covers, Gulls Prevented from Break- ing Lamps with a ~ Cutter, TREES py ga ar ence ol Glass Cylinder, Revolving, Is New Drink eee eee eee eee ese eee eeeseeeeereseesseses Se Giese, Gauge, Reading of Made Easy....... Glass in Window, How to Replace When i EE ae as eee Glass a penetaring, Cubans Use Native Dt te tccténvnere en bee iak seh ene ann’ Glass, Marble, and Slate, Drilling of Ex- EE cea Geis aie wo beeen kee ea eecl Glass, Optical, Best Now Made in a Glass, Optical, Special Clay Crucibles for. Glass, Razor Blade for Cleaning............. Glass Receptacle, Five Compartment, for DD 6s sv ee adaeees 60 bb 0000008 Glass Spinning and Weaving............... Glass, Steel Wool as Cleaner for Glass, Translucent, Pear Shaped Electric EB Sia ns a ae ds din th ks hg a oe Glass Trap in Gasoline Filter Catches Dirt Glass Utensils, Silvered, Replace Platinum.. Glass Windows, Stain for Gleason, Gordon P.: Channel Sweeper for Canal Maintenance or Glider, Aerial, Shingle Makes............... Glider, How to Build for Ten Dollars Glider, Ice, Made from Old Skates Glider, Ski, Airplane Type.................. Glider, Toy Biplane, Flown like Kite....... Globe, Electric Light, for Cleaning Smoke- Rie ae gies ce on ord Ei OO eo Been me Globe Trotter, American, Betters Balboa’s Time Across Panama Gloves, Electrical, OPT errr errr Cr re re Terre Glue and Sawdust for Plugging Nail Holes.. Glue Bottle, Spool Stopper for Glue, Noncracking Binders’............ . Gluing Press Made of Strap Iron and Pipe. Gocart, Two Wheeled, Folds into Small, cc need Rae Aas See Oa we Ota Goggles, Carbon Tetrachloride Cleans...... Cosee™ Motoring, Electric Fan Helps to ee ee Keep Autoist’s Fingers ee Gola” Hunters in Power Schooner “Casco” 2 ee, « ssn apdecewwaaeedawae o8 Gold Mine, Fire in, Quenched by Flooding.. Gold Mine Shaft Sunk through Garage Floor ae} ene from Rubbish Near Old Stamp Gold Ships, Sunken, New Salvage System for Golf Ball Painting Outfit Includes Handy PE. tic ccesetedveeebbarkdhepaaedhabee Golf Course Mower, Tractor Pushes Golfers Give “Booby” EE Swans 4005105 04090 C REE eS Ee eee ea oO ee Gondolas, Funeral, Suggest Bygone Splendors Goose Knocks Airman Senseless............ Gooseberry and Currant Bushes Spread De- PO UED ov veeecsieveseotnapucenae —. in Northern India, Highest Dam to ross Prize of Cast Iron ee ET dint s Wkierk ka mak es Mateea ke hee mae een he Government, German, Issues Novel Postage Es cis kanes 4p ae hen whe is eae Shee Government in Business, The, by H. H. EE 6450665 eet whe eeke neath Kaeebe ueeee 664 6 238 874 216 686 Government Makes Liberal Provisions for Reinstatement of War Risk Insurance... 41 Government Returns Wireless Control to PE ED Kn cckeCeurnaewanerecaneares 499 Government Tests Reversible Aeroplane Pro- NS Ot it aide es dick eins Be eat a eae A lb hie Ba 27 Government, United States, Buys Hog Island EE 54:5. oo! bony 4 a hk aw Kn ee @ Ow ae 726 Government, U. S., Design for Victory Medal EE a cacavincavaavdcdoeseseinnae s 345 Government, U. S., Egg Breaking Plants Made More Sanitary and Efficient under I OE ascents kaon We eae or ee oak ee 106 Government, United States, to Build Con- crete Igiocos for Bakimo.........ccccccece 461 Grade Crossing, Warning Signs Replace bite cens ene h dod Whoo ewe bs 594 Grade Crossings, Chinese Pictures at Warn 330 Grade Crossings, Concrete Replaces Planks P iad hv eee cece beedeseedsavies nets seen eee 41 Grade Crossings, Standard Signs to Mark. 44 — Indicator, Railroad, Attached to Win- 89 Dek We kc bith ke dG ai ae ee ak Bea a aa 4 Grade, Steep Artificial, No Obstacle to Trac- 216 SAMERAGAEDE MEDORA eee ed eeds SO SS Oo >-c 1 pf Bag, Channel on Chute Protects...... 622 Grain Dust Explosions, Gallery for Testing 269 Grain Elevator Explosion Danger, Model Aa er eerste 410 Grain Elevator, Public, at New Orleans, by 6 SU eee ae 203 Grain, Machine Culls Wild Oats from....... 439 Grain, Mouse-Proof Granary Saves.......... 284 Grain Separator, Adjustable Rear Wheels i en ai ebee Keehn Oe Oak WK ee 240 Grain, ny Disease of Shown by Painted haan s55 catia cédeneaeewibes +i ne ews 682 Grain "“@nadarés, Traveling Schools Teach i Jaa ase ener Tere Tr 338 Grammar, English, Screen Version of Given II iin Si cca ta.c) ih ns Wik nai atinod ie ak sem. a Ge Sw oe 918 Granaries, Portable, for Wheat, U. S. Plans to Distribute Among Farmers............ 233 Granary, Mouse-Proof Posts Support........ 284 Granite Monument, Unusual, in Lexington, PE tcc ca0dtbhoon estat oeagn ates 587 Grape Arbor on Street Corner in Pasadena... 586 Grape Seeds Yield Good Cooking Oil........ 32 a ae New Lemon Variety Grows as 580 Graphite Removal of Bit from Tobacco Pipe Made Easy by Rubbing with............. 157 Grass and Trees as Anchor for Sand Dunes... 80 Grass Destroyed, Harbor Isthmus Swept RE Widhekébardhbbhtdssc cea ak denntnmne es 582 Grass Seca for Lawn Sown on Canvas or PP cbt kinhetnatnetabadhtnceseeded eas s 924 Grasshoppers, Poison Bran Mash for........ 798 Grater, Nutmeg, with Boxlike Container.... 914 Grating yd Drawer in Floor, Dustpan Re- PE Ccerastishbvs stg aahs eene nhs ceeKe 74 Grave Markers, Odd, Contain Relics of Dead 406 Gravel, Mechanical Loader and Screener De- livers in Three Grades.................05. 246 Gravel Used in Concrete, Steam Radiator DE seécteeds nnecuekanunan eens ewer teas 286 ay ~s American in France, Flags Ordered ane OF sceuka tattbes daa bibenwakeweussias enn” Gravity, Einstein’s Theories of will Remain Popular D5. kek bi itn ews alk Oa we 372 Gravity Feed, Horizontal Band Saw Cuts | 2 errr re 717 Gravity, Light Rays Bent by............... 11 Gravy Boat, Novel, Separates Rich and Lean NE rc hid GA a) ed Sate hele Kaan b Wik aes ox 275 Grease Extracted from Wool by New Process 164 we Solvent, Carbon Tetrachloride, Cleans ons EE tis wb kh aed a Ree § ee ee aed ae Green _ oe Huller, Crank Operates.......... 15 Greenhouse, Individual, for Every Plant.... 785 Greenhouse Shelters Unique School, by Paul Ip PEE BAA beens ed ak 656404450002 G0h0 Oo 13 Greenhouse Soil, Small Motor Works Sifter cer Gn re rae rr rt eee Greenhouse, X-Ray Plates Make for Hospital 590 Grinder, Garage, Auto Drives............... 779 Grinder Made from Churn Parts............ 764 Grinder, Valve, Made from Auger........... 931 Grindstone Frame Made from Part of Old DED tpn kihevenen eh et has taindees ens.eg eee 459 Grindstone, Rentectian 131 Years of Age, ee Ge GND FON s no 0060 cs bwecdcncaess 760 Grips, Pistol, French Veteran Carves as Me- mentos for American Soldier............. 69 Grocery Store, Auto Carries to Housewife's DE aie daeSaGeebdceee ounces esos eeeank ek 5

Page 28

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Handles, Shovel, on Garden Tools........... Handles with Guards Make Knives Safe..... Hands, Cold, How Avoided in Outdoor Work Hangar, Greatest for Airship, Model of on ET asc csin aed e he eee ae ebbe we wees éo0 Planes, at Hangar, Large, for Army Patrol El Paso, Texas Hangar, Separate, for Single Air plane Cuts Fire Risk Hangars, Striped, Aerial Landing Field Iden- tifled by Hanger, Clothes, as Necktie Rack Hanger for Breast Drill, Coat Hooks as..... Hanger, Hat and Coat — Ingenious, Keeps Clothes near Ceil- 0 BPS ETN ar aa a ee Hanger, Snap Holds Light Clothes on....... Hanger, Wire, for Seed Corn Harbor, Canadian, Has Floating Drink Stand Harbor, Havana, American Ship Explodes in Harbor Isthmus Swept Away When Grass is Destroyed a Jamaica, Has Five Ton Concrete ita ae Bie al al tes een i ws hab ain a wa O00: Serer Obstruction Becomes Shipping Aid, by Horace E. Thomas Harbor, Papeete, “South Dakota” Largest Ship to Enter Harbor, San Francisco, Plan Channel for I, cc cvict a vavtcedeceewns eee aan es Harbor, ees Historic Lighthouse at En- trance Harbor, Submerged Induction Cable Ste-'s 0 ER eae Harbor Works, Danish Boats Gather Stones Beem Qaeem BOttem FOF. . oss ccccccccvcess Harness Arrangement Supports Eyeshield } Sars sere Frictionless, Has No Buckles, od ac bo ee ee ass ww we 04:08. Harvest, Ice, Motorcycle Aids in............ Harvester, Berry, Tubes for Hands Speed Work of Harness, Hasp Screws Made Inaccessible............. rere Hat Box Hangs near Closet Ceiling......... Hat Box, Leather, May be Attached to Auto Running Board Hat, Felt, for Filtering Oil Hat, Straw, Clamp for Drying.............. Hat, Straw, Makes Picture Frame.......... = Holder, Simple Directions for Mak- saabahorice, Fish, California Distributes Mil- lions of Fish from Hats, Ladies’, Real Flowers on.............. in New Hay Rake and Stacker Combined Farm Implement Hay Stacker Handles Heavy Loads.......... Hay, to Prevent Waste of Haystack Platform, Concrete............... Head, Wooden, of Statue of Hindenburg De- EE id wake ee daa aD Oe Qh SS eho 0 he' ee eo Concrete, Planned for Scottish UI ho ia a. od ile ts be hatin dalr bo ew o ell Headlight Refiector, Auto, Prevents Road DT c Lie bheeeeeee eer. en cd assier ext hoeetes Heads, Animal, on CanesS............c..2000. — Board’s Car Is Theater and Labora- EES Ree re ee Health, Commission of, to Have World Wide cope pom Airplane, for Dead Airman.......... Heart of Polish Patriot, Swiss Return to Warsaw — Strength of Compared with Sap- woo Heat Absorption, Testing Colors for......... Heat, Plate on Stove Distributes........... Heat Rays in Enemy’s Body, Electric Sen- tinel Detects Heat Rays Used with Secret War Device for Signaling Heat Units, Gas Supply Charges Based on... Heater, Electric, Auto Engine and Radiator Warmed tis ie Ia ihiciera a Aa ii. hai: Rh ed Oe ce eel A ta wt Heater, Electric, Distills Gasoline for Test. a4 Electric, for Knives Used in Indus- tries Heater, Farm Tank, Contents of Water Trough Kept from Freezing by ........... Heater for Hydraulic Test Basin............ Heater, Intake Manifold, for Automobile.... Heater, Kerosene, Prevents Freezing of ae re hee ad die eb hah wae Oo Ki Ce ey 28 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Grgcery Store, Coéperative, Newark Postal SN DEMNMONE ccc cccsccvcesecreveans 909 Guard, Chip, for Brass Turning............. 462 Guard Rail, Ferry, Compressed Air Operates 841 Guard, Window, Locked by Raising of Sash 117 Guard, Wire, for Notebook or Purse........ 915 Guides, Mechanical, in London Subway Sta- SERRE TOPOS MCTRMMOTS 0 ccc cece ceceveuses 844 Guillotines Replace Axmen in _ Sidewise EEE OPE reer er err ee 547 Gulf Stream World's Greatest Current...... 719 Gulls, Glass Covers Prevent from Breaking ON Pr ore T Tere rere eee 737 I, Bes I BOG, ok. 0 0c ence sens vbw esewn 949 Gun and Carriage Carved of Granite in Lex- RRC Taree 587 Gun, Army, New Sporting Rifle Resembles.. 504 Gun Base, German, Foundation of Old Smel- Den dagcekce ote we deka hee melee Aa 886 Gun, Big New Coast, on Way to Pacific EE ith Dh bic nies 6s ale Rec PE eae ee aes 732 Gun, Coast Defense, Railroad Mount for | ee ere eee 210 — tga Railroad, Navy Transfers to ae CCRC COOH EEE EEE EEE TEE SOSH EO SES EOS o Gun, "Hew Life Line, Waterproof Shell Used “ 42 my Ee er HY Gun, Sling Shot Aimed like................. 632 Guns, Eight Machine, Remodeled Battle US OO. eee eee 843 Guns, Navy Plans to Build by New Hydrau- RD <n 5 64 cassie obhn eter babe ee eeaws 258 Guns, Old Naval, Wrecking with Dynamite, ee SE EOD GIES ccc accdacaseacvons 419 Hacksaw Frame Uses Broken Blades....... 471 Hacksaw, How to Make Run Straight....... 945 Hacksaw, Power, Support for Stock Being NE Nice bce sida 6 ee ied a ae ae oe eee ee 445 Hair Clinees, Electric, European Barber RA eee 329 Hair Curling Machine, Elaborate, Hot Blast i a 6 orc aad ake Ko oe Ae oa eee os 815 Hair Used for Mending Garments........... 473 —., ween, Women's, Made of Linked Leis Rk AR AS A Ae Rid ea a Ae eee 802 Halrbrush and Mirror, Combined for Pocket ET as aie We in ia 0 a Oak ch A a te a a AS 592 Hairbrush, Miniature Dynamo Mounted on EN fe iri ost eed On Ow cde seen ae 322 Haircut, Bobbed, Semicircular Comb Makes Reo noe er Aeros 914 Haircut, Man’s, Comb with Blade Attach- i nied bowen athe aa eS bee oe aw owe ae ws 915 Hairpin, Repairing Umbrella with.......... 957 Hairpin Tool, Moving Picture Frame Cleaner 765 Hall, Assembly, Students of Mechanical -o SUS EO ae eee 760 Hall, Independence, Rejuvenation of, by John EY cS pk eb aea ees kW AAO eee ware 83 Hall Lamp Made from Bottle............... 476 Hall, Memorial, Arranged for Many Uses. 640 Hall, Paris to Have World's EMBO . co ccces 913 Halter, . -. & . AS 7 Halyards, Ship's, Cans along Rails Hold..... 862 Hammer Handles, Fiber for................ 2 Hammer, Small, Three Screwdrivers Carried si odd sina tae Rhee nae ahh Aee a a's 849 Hammock, Bathtub, for Hospital Patients... 564 Hams, Quick Method of Curing............. 932 Hand — Subsurface Water Craft Pro- pelled b { aia ce eae rd eee eal ok ee ew we ow eee 802 Hand Drill, New, Single Miner Operates..... 732 Hand Pile Driver, a ae 452 Hand Protectors for Motorcyclist, Leather CER 6 oe a's wr 6 aw ne on OA we owe 335 Hand Stains, Vinegar and Cornmeal Remove 451 Hand Truck for Towing Auto.............. 767 Hand Truck, Short Turning Radius of...... 302 Hand Truck, Small, for Heavy Loads........ 782 Hand Truck Tells Weight of "Laan It Carries 436 Handbag, Nonspillable Perfume Bottle for.. 592 Handbills from Aeroplane Help Sell Real aie sac sa inrak Xa ‘tial hip las in ta nae lnk Shc Bt. es 732 Handcars, Rail Auto Handles, and Carries EAS eae 734 Handle for Draftsman’s Scale.............. 765 meeamere for Fruit BASKGts. ....ccccccccccces 951 Handle for Rotating Shafts................ 447 Handle, Small Hammer, Three Screwdrivers ne ee a cae aid woe anh m6 Oe 849 Handle, Umbrella, Contains Cover.......... 635 Handles, Hammer, Fiber for............... 925 Handles, Knives with Names on for Kitchen aie aids chi alat dal dating Siu we 6S a wd Od Wie @ wie ad 752 797 278 473 647 212 9 682 875 421 883 285 294 389 290

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97 73 833 266 438 371 515 675 248 451 328 9 682 875 421 883 285 294 389 290 Heatin POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 29 Hester, Small Asphalt, for Repairing Rural SRR penelas Ti Sane is: Rana ie ome ena Heater, Water, Burns Kerosene............. Heater, Water, Engine Exhaust Is........ Heater, Water, Gas Burning Instantaneous. Heater, Water, Gas Flow to Stopped When Pe SE: ceensianed tu ahewaee a eeekeene a Heater, Water Trough, for Farm........... House, Use of Gas for, by Paul H. Bg aamalaapenaelaG le sn ale cedn marie meee ian Heating System, Fire Protection Provided by Heating System, Hot Water, Gas Water errr rrr —s System, New, Portable Blower Units 6 936 9 777 300 ness toe Ge hah hee mace Seu w eee oe wae a 913 Hedge. Old, Tractor Clears Away Tangle of 427 —— Rubber, Angular Cuts in Prevent Slip- one vein Detachable, Fastened to Shoes with- frees eee 713 Heels, Resilient, for Horse’s Hoofs.......... 596 Heels, Sideworn, Inner Pad Prevents........ 114 Heifers, 20 Pure Bred, Calf Club of Morgan County, Gide, TROOGUORs do ooscnccecscsescs 920 Helicopter, New French, Has’ ‘aa Control I ek trate a ahs Mae ace ei Ak ek aoe ie ek aon Xa 182 Helium Gas, New Methods of Analyzing to Find Coronium ......ccccccccccsccccce 228 Helium, Law to Prohibit ‘Exportation Pro- POPP re rr rere ere eer eee 558 Helmet, French, Becomes Wall Clock....... 381 — German, Pavement Made by British a" Sai cs SA a A le ds AE a ee el ee 6 Hemlock, Mighty, Long Stairway Made of, by Ranger es ea ae ak ah A ale We ak 260 Hemp Handling Machines Create New In- IE ciel at So6s ioc sk coin hl a at ad hs ci Wk 333 Herd, Alaskan Seal, Doubles in Eight Years. 706 Herring Smokers, Primitive Methods Em- >Re eee 514 Hero, Captain Sir John Alcock Dies in Air- SN CED 5 evidenced endaeensenaniicnes ees 82 Hide, Walrus, Used on Polishing Wheels.... 731 Highway, Desert, Trees Along Watered by "Re, BOO” BR concncncenews.on? 262 Highway Engineering, 115 -American Col- - > 7 _ RPP errr 228 Highway, Hard, Sand Dunes Rolled into.... 709 Highway, Lincoln, Record Breaking Sum PE 2 tctkcstneeataheamneh see pees t 530 Highway, Michigan, Concrete Job on Han- led on Big Scale, by Allen P. Child...... 569 Highway, naneeane like Lincoln Highway, Se Oh Don snc Sae ane d.oa006.nsad) O04 99 ay oy New Miliion Dollar to Skirt In- i Pi. .tcnthetkhivhkes ene the aban eae 720 migawey, New, Wonderland Revealed by, by eae 699 Highways, Modern, for Island of Oahu ..... 362 Highways, Ohio, Unusual Danger Signs on. H+ Hill, Coasting EM en cea ckine Fuh eus 63 Hill, Tunnel through Is House Owner's Ac- Ee GRR Sane Gas eee 20 — Rock, Huge Japanese Statue Sarton ase mm ES Adjustable Bench Stop Formed by... 624 Hinge, Gate, Wagon Axle Used as........... 137 Hinge, Strap, as EGG BEE vesacdanes ss 465 Hinges, Dowel Pins Prevent Opening of See er TOO OO se ccesescaenceeneeses 478 Hinges Missing from Tool Box Cover....... 465 Hints for Home Builders .................. 620 Hippopotamus, New York Zoo Birthplace of First to be Born in Captivity............ 580 Hippopotamus—Zoo at Tokio to Acquire. 219 oe Jewish in Africa, Old Letters Re- DE OE STS ee ep eee ee 14 Hobo. Aeroplane, “Makes His Appearance.. 337 Hoe, Scuffle, Made See GE ebeeteenscecde 932 Hoffmann, A. Seagoing Electric Freight Trains........ 864 ies Carcasses Dehaired by Rotating Mas- i ces ech eeasecsundeaseesayekbs'eckees 202 Hoge, John Edwin: Farming in Death Valley ................ 339 Mountain Road, New, Open to Traffic..... 193 =e Dodging along Mexican Bor- ry rr ee eee 07 Water Gardening: A New Floral Industry 252 Wrecking Old Naval Guns with Explosives 419 Hogs, Mechanical Fatteners for............. 272 Hogs, Six Months’ Insurance Sold for....... 388 Hoist, Electric, Made for tog ad aeons. 756 Hoist, Giant, Salvages Loaded Barge....... 43 Hoist, Power for Mine, Motorcycle. Engine SY GEE? wo pdascoracickdcuceveccekescar eed 708 Hoisting, seeneneta, Simple Mast Replaces Hoisting Machine, Most Powerful, Lifts Mil- i Ce ee keane wba we sted dow bak ae 73 “Hold Up” Insurance, Several Companies ee Ek EE oboe cectens seeneencenes owe SEGUE, BOE MONEE 6 cc co cede decscccesoeun 793 Holder for Chalk, Cartridge ee iweie ie ae 135 Holder for nc wéonbbeetawowte 319 Holder for Blectric Light. .....ccccccccccces 318 Holder for Glass Fruit Jars.......sccsessece 319 Holder for Medicine Dropper...........+++. 797 Holder, Hatpin, Easily Made..............- 157 Holder, Removing Matches from............ 947 Holder, Tool, High Speed Steel Saved by.... 934 Holder, Twist Drill, Is Handy Gauge........ 875 Holder, Watch, from Strap Hinge........... 465 — Drilled in Rock, Pump for Cleaning 988 PFeTTT Tre Terre TT TTT eT TT Tiree Holes, Large, Bit for Boring.........-..++6. 925 Holes, Round, Cut with Steel oe ee 607 Home Builders, Hints for..........-.0esee0. 620 Home Dress Maker, Bulb Operated Skirt er rrrrtr rr err 428 Home oe Set, Engine and Dynamo a DE a ccdanereehesbestakdsineve whack wee 437 Home, } ree for U. S. Chamber of — RD bcc e each cee et hA ARS taSedReDes 110 Homes, Kitchen Ventilating Device for..... 747 Homesteads, Arkansas Offers Half Million REE cMeieks deed Ptiedseenatheoeeeeus 195 Hood, Focusing, for Camera..........+.+++. 477 Hook, Easily Made, Pulls Snow from Roof.. 295 Hook Holds Brush Upright in Pail.......... 319 Hooks, Numbered, and Slate, Laundry Sys- Pe BEE cnccsdsasdedebelestoeeacane tees 879 Horn, Hand, Operated by Foot.............+. 932 Horns of Cattle, Weights Change Shape of 90 Horse and Tractor Combined for Garbage CE icccevenececcegissoecssonnebens 867 Horse, Imprisoned, Steam Crane Rescues... 103 Horse Show, Automobile Jumps Hurdle at.. 655 Horses, Famous Race, Monument Built over PEE ccc cickvareasneksahe Koneuaenes ne 263 Horses, Inferiority Advertised ‘n Unique Way by GG DOOR sic ccedensessanuse 98 Horses, Rocking, gy in Children’s Bar- De MONE Os koa sctsncccsenccnce 761 Horseshoe, Resilient Steel Heelplate for. 596 Horseshoes and Attachments to Prevent Slipping of Horses on Ice, Studied........ 526 Horticulture—Caprifig Orchard Increases EE id sade edtihs ad Cekeok enue 572 Horticulture—Dwarf Apple Trees Planted in RESON COGMBNGSS ccc cctertesccsenersseton 556 Horticulture—New Lemon Variety Grows as Rs BE GONE 0:54.55 bee casivtnesnes 630 Horticulture—Stoneless Prune Has Edible PE 1 6teck ch Ghd owe ae heed er ehe ae eens ee 713 Hose, Air ~ aang Support for Has Flex- Pe ee cuccrnt oceans seeewebhecehenenteas 380 Hose Chuck, Nonleaking, Locks on Valve DE Sicecachexknincadekenes tine 0a ween ea 338 Hose Clamp, Michigan Fireman Devises.... 694 Hose A pomeeneeee, Single, New Milker’s Fea- 919 SED ccc cceerccocgecevsctotesecegeeonsevese Hose “Connection, Tire Pressure Gauge At- RN EE bance enh ous eer dkss nents sucha stt Owe 940 Hose, Old Rubber, as Bicycle Tire Filler.... 796 Hose, Rubber, Ropes on Boxes Protected ied 781 Hospital Apotianes. Bathtub on Wheels Is.. 361 Hospital, Army, Flock of Tractors Move. 577 Hospital Builds Greenhouse of Old X- Ray 0 ae rrr rrr rer rr 590 Hospital Drinking Glass, for Recumbent PE ct cnce sec bpd Nes OREO 200.6 4064060808 439 Hospital for Insane, China Has Only One... 260 Hospital, Free, to Be Nurses’ Training EE 0 ¢4s6b6e6ae0G8 04006 0860 Cae eekwanseen 648 Hospital in Panama City to Be Modern In- DL. .< ¢iverkktehen ane eawad weeded ey % 556 Hospital Patients, Bathtub Hammock for... 564 Hospital, Radium, Drink Sanitarium Be- CE cecadake tied neenreehe ethene esebae 739 Hospital Records, Gila Monster Bite Fatal SES WD vate ve cece cueawedsesesouneeduns 799 Hot Boxes, Railroad Car, Bearing Coolers for 585 Hot Plate, Kerosene, for Campers and Sum- SN np ckecesbdneesencsesesebeewe 435 “Hot Water Bottle,” Waterless............. 692 Hotel, Doors to Rooms Permit Privacy While ee bc vec ecke adden hk eee 122 Hotel, Glacier, in Yosemite Park, Elevator We ee GN GDe a cd cccscocsnececases 482 Hotel Luncheon, Prize Cow “Tilly Alcartra” PE Sonnweenreavdeensisenoabanesowawn’s 34

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a

30 mene, French Battlefield, to Open for Tour- Cane AR ahd Chk hae eae he Oe oad 511 m...¥ Bird, Dead Tree Makes............. 749 House Chimney, PRs che atddtssaa oan es 620 House, Community, Model Soldier Civilian... 320 oe Community, Town Gets, as Memo- 583 House, Cylindrical, Gains Space on Small see House eens. Use of Gas for, by Paul H. 7. reer 819 House, Log. Built in Archangel, Russia, for Pe Pec chars daenr eee nena n6 soe 282 House, New, Built around Old Structure.... 126 House Owner Tunnels Hill to Gain Street PG 505 ceChashas sh teateraesesequwens 420 House, Painting by Lantern Light.......... 776 House, Portable Summer, How to Build..... 603 House Shortage—Political Candidates’ Wives Pool Chances on House.........-e.eeeee0+ 99 House, Squirrel Cage Country, Built from EN UN. aids kins b0 Oia ee te oe a ee 279 Houseboat and Cruiser, Shallow Draft Mo- Pe ceeeakeske rds cedeeed eee the ee ace 917 Moucebesta, Sree Who Live on, by Household Devices .. Household Devices: Ash Tray with Two Pointed Prong....... Basket, icker Bassinette Made like..... Bassinette Truck, Wooden Wheeled, Moves Baby Basket Easily from Place to Place Birdcages, Wicker, Suspended from Stand 115 Boudoir Table Has Many Uses............ 434 Broom Clamp Checks Wearing of One Side 435 Broomstick, Coat Hanger Rail Made from 137 Brush with Spray Attachment Is New Bathroom Appliance ............0..ee08 274 Bulb, Electric, Pear Shaped, Made of TWRRMORMOOME GEORD ccc cccccceccesescsce 115 Carriage, Baby, Pivoted Front Wheels Make Turning of Easy................+. 115 Cartons, Paper, Electric Light Shades DE MEE kd. cd civnckidedeeseetseee dan ee Hydroelectric Plant, Tennessee’s, Has Dam Overtopping Niagara ............0ece000s Hydroelectric Plant to Sell Power by Year, Feature of New Town Site................ Hydroelectric Power, Highest Dam in Canada Generates for Vancouver Hydroelectric Power, _ Natural Fall of River without Dam for.................. Mysrocen and Nickel, Whale Oil Turned into Mr dae ods bes dena +eS deems ee sod os ee ne arenas Makes 71 Miles an our ee ad “J Am the Farmer's Friend,” (Poem I-Beams, Concrete, Construct _ Sf SAE errr eee Oates Ice and Milk House, Combined, for Farm. Ice Boat Auto Wins Close Race with....... Ice pars ay Bd OO ae Ice Cutting Machine, Engine Driven........ Ice Floe in Lake Michigan, Steamer Held errr rrr rea Ice Glider Made from Old SkKates........... Ice Harvest, Motorcycle Aids in............ Ice, Illuminated Pyramid of Built forCarnival Ice Jams, Farmers Beleaguered by, Aero- plane Drops Supplies to.................. =" —— Springtime, Boards in Canal Pre- Sen, Tiaice, Lumberman Dons Diving Suit for EE, no. 5:4 gaint 04 00KS 0 eet endccs Ice, Nature Forced to Make in Sands of Sa- hara, by Robert MacMillan Law......... Ice on Lake Champlain Catches Falling Railroad Coach ee

a -y

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or SOF NWF WHY WSO OO SF TCU or wonNaOto KF wo fF OC'M OT gi POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 a Scowlike, Found in Wall of Old P DE Dantes tar seeh oek whew een bebe hes aa 536 Ice Skating Rink, Flood Lights Illuminate... 286 Ice Tongs, Old, for Wee Wiss ns ceccccsces 457 Igloos, Concrete, Eskimos to Have.......... 461 Ignition, Auxiliary, Box under Auto Floor i eee cvicavaseneesekeeuavaeease 136 Ignition Switch, Secret, for Auto........... 606 Ignition System, Automobile, New Device PD .aa na 6 ices shan oe Rene d anes 117 2 fe City, Duplex Street Lamps Cut 87 dC/40 tebe neha os CeReeNeseae se és 1 ea A for Phonograph Turntable. 568 Immersion Heater, New Electric, French NS MII © ssa ok: ty wk mess de hi ete 400 Immigration to Palestine to Be Systematic.. 880 Improvements, Big, Borough of Brooklyn PE Ccanceugessduse sue acesdd de wknkine sé 878 Incinerator, Gas Burning Garbage for Home 915 Income Tax Payers Report Items of Outgo BE Ancéikvagyecdsa bea dneesddaewusca de we 639 Incubation of Green Cotton Bolls Produces Ree Tre GE BONING. oo c.06scsennssccenes 42 Incubator, Bacteria-Proof, Chicks Raised in 247 Incubator for Raising Bread............... 941 Incubator, Giant, Has Many Improvements... 367 Incubator, New, Heated by Electricity...... 540 as pee Wire Baskets Sepsrate Chickens ose indicator, Railroad Grade, Attached to Win- 98 ce A RECN oO eR SA ORE be Oat knees 4 Indicator, “Rear Vision,” New "Auto Acces- 38 ME ac.26 ho 0ece ones eed ehettesceeteneonaes 42 Indian nate Structure Unearthed in IN. arin cus nada icin nce We ah ok eb etnies ahem niet Ore ak 22 mm... “Cabie, Submerged, Steers Ships to NE k.ca) ty tel ade dn bs Wr el tnt da ahi sO ie iia 15 Induction Coil, Odd Use of, Amuses Audience 437 ee South American, Burned Indian eee Saget "Welghs oo ae ere 866 Inhaler, Medicated, can be Carried in Pocket 501 Ink, Indelible, How to Make............... 951 Ink, Red, Checks Protected with............ 769 Inkstand, Bronze, to Writer of Best Business PEE cestn che dee chee tava cs send badennsee 480 Inner Tubes and Casings, Makers Employ Special Weighing Scales for Testing..... 436 Insane Asylum, Only One in All China...... 260 Insecticide Eliminates Worms from Apples 578 Insecticides, Cheaper and eer Methods for Producing —« in 06609 #000 264 Insects, Bait Pan Us in Sip ee 116 Insects in Cereal Packages Electrocuted by DE, p:cched sthedhearkevesasute hha bas ew 540 Insects—New Jersey Combats Japanese Bee- tles with Chinese Ring Necked Pheasants 16 Insects, Wasps Build Home Inside of Violin 691 Insole, Light weight, to Correct “Flat” Foot 592 Insole, Pneumatic, for Shoe................. 434 Inspection, Starting Motors, Table for..... 720 Institution, Smithsonian, Solar Observing Station in Egypt to be Established by... 843 Instructor of ireless, Concert Given by to Fe err tT reer 867 Instructor, One Legged Swimmer Is on BO 0:65 onc 26 Odd Sed See ee ene ae Veen 873 Instrument, Wind, Played through Nose.... 405 Instruments, Band, Makeshifts Used as by Indo-Chinese Laborers ...............255. 240 Insulation of Light Aluminum Container Keeps Food Hot or Cold...............4. 114 eee. Steam Valve Wheel Handle, How eve a 3 Sl Broken, Protect Car Conductors 702 Insurance Adjuster Uses Aeroplane for Pro- DR WON, on d.cn cncdeseensececades 599 Insurance, Five Miles Bgl Broken Glass Paid for by One Com ae PP ys Pree Pere yee 886 Insurance, “Hold \g Sola to General Public 78 Insurance, Six Months’, Sold for Hogs...... 388 Insurance, War Risk, Liberal Provisions DE CE tcccunhaen dh bakdinenabewee ees e's 41 Intake Manifold Heater, Automobile....... 294 Intake Manifold, Vacuum in apeeeas New Se DEED sctazadecanrecdonens ° 744 International Air Service, “London to Paris, Little Mechanical Trouble Experienced. . 5 Interrupter, Rapid Circuit, How to Make... 145 —s Chair, Self-Propelled, Easily Oper- on Invalid, Solitaire Board for ............... 638 Invalid, Telephone Enables to Hear Divine DEE Cutis sneelecvacevekeltatounterss 720 31 Ivory Sculpture, Metal Shortage Makes Vogue in Germany ........ ie Ohad ew Glee 171 Invalids, Bathtub Hammock for............. 664 Invalids, Recumbent, Glass for Giving DE UP nCevcssen dene h ead ehceewkende eee 439 Invention—Apparatus Salts Peanuts in Shell 10 Invention—Astronomical Apparatus Tracks PE: cick 6 a0 ae wm wad OS ee wie 830 Invention, Canoe Turned into Sleeping Place 9 DP Staccbueaset ss oeasaeebeaed eens baeae bas ll Invention, English, Baby Carriage Wind- SE EE Oh in ae baa a ha Ree aii oa eee Raed 433 Invention—French Doctor Invents Sanitary Cee BOCES TONED cc ccccccescusccccers 585 Invention—Musical] Automaton Displays Un- St tn crt bee incenn sheee ea dae vanes és 801 Invention—Hose Clamp, Michigan Fireman DT Gee rckbead Dadi hie made baa kes aac a be 694 Invention—Rigid Endless Tread Chain Sup- ports Tractor without Idler Wheels...... 86 Invention—Separator Culls Wild Oats from of —=Eereree ear 439 Invention—Table Top, Odd Division Permits SC Mn sD icec te eneuneeeeuceean 755 Invention, Typing Machine for Music Latest PD 2 6seeedevnne eon desbetaksewesan ee 50 Inventor, Australian, Puts Weighing Plat- Ss Cb Be OEE cccccvcescueestesene 436 Inventor, Blind, Compact Well Driller Made 6 Ds ccthern mae hal etb wet ese eed earente Inventor Claims Success for Aluminum MD <cnieebecsnhdandadsdacivareausaakts 276 Inventor, Detachable Shoe Heels without ES rrr 713 Inventor, Dr. Alexander Graham Bell, In- vents New Speedy Hybrid Plane ........ 2 Inventor, "New Combustible Gas from Com- mon Materials Produced by.............. 738 Inventor, Parachute, Wind Carries to Death at DE cceheos cet40 640606040008 84600% 64 671 Inventors, British, Announce Creations of ff SU Pe eer ae ae 594 Inventors—Marker Honors Howe Family.. 55 Inventors of Military Tank, Britain Rewards 250 Iron Adheres to Concrete by Friction Is RRR err 9 Pre rr rrr 102 Iron and Leadfoil Composition Lining for Containers of Radioactive Substances.... 44 Iron Auto Pistons, Special Design Makes DE c566G 6s Ce cbiennngenh« beee sss hon Ones 750 Iron Castings, How to Increase Thickness of PD Ct vskwee heswe hen es esesebetencns 304 Iron Coated Mechanically with Copper...... 712 Iron Disks, Rolling, Pavement Materials Co) ke ar errs era 846 Iron, Electric, Has Curling Iron Heater.... 275 Iron, Electric, Has Lamp Attachment...... 435 Iron, Electric, Keeping Cord from Board.... 605 Iron, Electric Sol iy for Auto Owner... 80 Iron, Electric, Walnut Sacks Rid of Codling Pt Ti) ove scans whewOhebba sade caoeue bes 858 Iron, —-* Oil and Whiting Prevents a Rp Rec Te tet pa RP Rye Pia 144 Iron Ore Fe ma at Tied with REO Ch TOO GE BEIDO oc ccccccccasvccsess 79 ~— a Motive for aT City, by Martin 531 Iron Pipe Line, Kinks in Allow for Expan- sion and Contraction ................:+.:. 410 Iron Rods, Two, Used to Measure Boiler I a een 454 Iron Smokestack, Concrete Applied to...... 229 Iron, Strap, Door Catch Made from........ 319 Ironing Board, Wall Closet for............. 773 Irons, Electric a How to Keep ay 2 De CN sanesansehs hb eeesnreieces 618 Irons ire, F “auto Rar 948 a ~ eee Australia Paanien Huge Dam en0 sa ot hm ta ses Dad sk Mp dai ‘estat wo a a,b 2 aa sa sl ta Ao 1 Irrigation Canal, Sagebrush Reinforces PME stant cevdeienh de rkek an eee nk ene 566 a wegen Canal, Worms Retard Water Flow 681 Srrigation——Dees — Reclaim Desert, by PE DO. 6 wie tds Kb oe +n 08 6a hagaee 715 Irrigation Ditch, Smaii Galvanized Iron Dam PM (ice e S6ADRRM ANE ERED CKRD 405% Rae 912 Irrigation—Filter Clarifies Ditch Water.... 925 Irrigation, Gate Valve of Sheet Metal for... 52 Irrigation Pumps, River Motor like Pendu- St : Sieced dds edebhebe sheds ab enees 826 Irrigation Reservoir, Large, for Brazil..... 679 Isinglass Shield, Street Vender Covers Dt 2 <innc c:cekcbenedendes en nenaees 873 Isiand, Banks Land, in Arctic, Schooner Rescues Trappers from ...........0-ee088 412

Page 32

—— ——s - a Seen ~— i na i SS ~ ere Se ae a 2 ree a - een TS 3 32 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Island, Crusoe’s, Thought Relic of Long Lost CE cch ob capi baekee as See Raa ae eee 4 Island, Helgoland, Germans Dismantling to Comply with Peace Terms ............... Island, Helgoland, to be Converted into Ce CS ccnpacekaeGinnhwaa dn eine Island, Long, Two Big Movie Studios to be 0 > a errr rere ree Island, Mauritius, to Electrify Railroads... Island, Oahu, Modern Highways for......... Island of Solid Phosphate Ceded to Britain. Island, Swan, Harbor Obstruction to Become Shipping Aid, by Horace E. Thomas...... Island, Trinidad, Asphalt Workers of to Live _f £. 9 Sree Islands, Barbados, Cargo of Cattle Ship i CE Co sk én ebabeeee ibaa Islands, Hawaiian, Wettest Region in to Get ES ND os win aoe 6.00% wise aaa ee Islands, Phillipine, Oxen Used to Draw Modern Farm Tools on Islands, Pribilof, Concrete Igloos for Eski- | ORS rae nee ee Islands, Pribilof, Many Sealskins Obtained from Islands, Spitzbergen, as Future Steel Center Islands, United States’ Pacific, New Coast ye "LE ee tere Islands, West Indian, Origin Sought........ Isthmus in Harbor Swept Away When Grass & | SRS I eerie amie Isthmus of Panama, American Betters Bal- ee: GE, ows da ceee ded wecnnw hued Jack and Lock, Auto Bumper Serves as.... eaem, Aute, Quick Action... ....cccccsccces Jack, Lifting, New, Curious Gear Arrange- ment Eee re ee ee ee Ee Cee Te Prete e os Set, Interlocking Base Units Feature beads hi OE a di ies aaah bs tcc fo oh Jack, Small, Made from Old Monkey Wrench Jacks, Quick Operating... .......ccscccscecs Jail Corridor Classroom for Women Prison- eed hea EEL end Cae ad se b.cesd sane Jar, Pickle, Hanging Fork for... Jardiniére with Fountain eee eee eee eeeses Jars Used to Show Effect of Falling Gas... Jaw, Sliding, Makes Wrench Quickly Ad- 3 a SE SS PAT SOE Se ie Seay ae aws, Graduated, for Milling Machi Jenkins, Paul A.: P _— Greenhouse Shelters Unique School Southward eer near Jets, Gas, Lubricating with Vaseline Jewel, Uncut, Black Opal Is Biggest........ Jewelry, Clothes Pin Makes Dependable I a dk Sta ar dvn: mcg: 0am. 9' back Gi ni iam ox Jewelry Scales, Tiny, Weigh Pencil Mark.. Jewels—Half of World’s Diamonds Owned i eo 5 ia i. -4 a wee ae w add ok ove Jews in Africa, Old Letters Reveal History of — eee of to Palestine to Be Sys- ematic Jig Makes Drill Self-Oiling................ ~~ Timing Machine Cards Factory Opera- SE Sk aa wie x ge aélaw ini ne kul kaa mrateate aims Johns, H. E.: Motorizing the Domestic Elephant to Hunt EEE ere arr Joiner, Stovepipe, Pail Used as............ Joint, Steam, Quickly Replaced............ Joints, Wire, Ladle for Soldering........... Junk, Siberian Film Factory Made from, NE © I sarin aids th taied Wind Bieta Guy he SE cw Kangaroo, White, Photograph of Keg, Nail, Makes Footstool............... ‘ Keg, Nail, Makes Shop Tray..............+. Kerosene Heater Prevents Freezing of Auto Radiator a ee laced, wi nh GW kh 4 ec aaa eed Kerosene Lamp, Unbreakable.............. Kerosene Pot and Syringe for Starting Fires Kerosene, Water Heater Burns............ Kettle, Cast Iron, Cover of Condenses Steam _ TS aieses pein Kettle, Cast Iron, Has Perforated Lid Key, Boat, Cork Attached to............... Keyboard Chart, Animal, for Teaching Chil- dren to Play Piano Keys, Florida, among 22 98 602 3 179 732 Keys Operate Postage Computing Machine. Kindergarten, Domestic Science, London RSet a ere a Kinney, Frederic: Camera’s Eye Discovers Ancient Ruins... Deep Wells Reclaim Desert.............. Kit, SSeagante Drafting, Traveling Case Con- PFET CCT TTT TT ULIP TTT rT Tee Kitchen Range, Coal, Oil Burners for Use in Kitchen Utensils: Apple Corer, Nonrusting...............-+. Cake Mold, Aluminum, Has Form of Re- Re rrr errr Cast Iron Kettle Has Perforated Lid..... Cast Iron Kettle Has Steam Holding Cover Clamps, Food Chopper, Held Firmly with EE rrr re Gaghage Can with Perforated Lid for in ~ Mantle, Worn Out, Egg Holder Made IN i os beri ca hk so cc high a WW thin ah Grater with Boxlike Container for Nutmeg Kitchen Cabinet Made from Old Sewing ID. cin Die ola's Randi n Sane 6a an a eee 08 Knives, Set of, Have Names on Handles.. Pancake Turner, Novelty in.............. Pie Trimmer, Annular, Works with Single EE sachs ona ae ae Wa kes ate eens Spoon, Wooden Beating, Twirled between Hands Kitchen Ventilating Device for Homes..... Kitchen Washtubs, Enameled Steel Drain GO GOD. coke cee Hose vtasnes segue se Kitchens, Red Cross, Burn Oil Taken from MD, -c sete wt Ae hee Causa hebieee 65aGe oe Kite, Toy Biplane Glider Flown like....... Knife Switch and Candle Wick, Matches CE Cs ce eee eeduse renee seeders ce ae Knives, Electric Heater for.............405. Knives, Reshaped Handles Make Safe...... Knives, Whirling, Peel Fruit and Vegetables ey eee with Names on Handles for Kitchen PD . dbeeedeeeeec cess sees eridhacneedawewe Knob, Door, Lateral Movement Locks Door. Knob, Nonheating for Pot Cover, Old Fuse I ye cian a iste a a ah e We Oe Knob on Stairway Door, Stooping Saved by PE RORENON DE ccc recs ancaseccenenece Knots, Shoelaces Secured without.......... Labor and Capital—Fifty Factories Gov- erned like Small Republic............... Labor Shortage on Farm, Mechanical Husker REE REET EE er errr ree rer ay and Theater, Health Board's Car PE Re rr ar ee ee Laboratory, Pittsburgh, Collecting and Pur- ifying of Radium Emanations for Use in WE. vp be hans cen ckne hs ons ses ee Laboratory, Radio, of Bureau of Standards Will Test Wireless Instruments.......... Laboratory, Special, Erected for Hydraulic Experiments Lace Making, Outdoor Classes for Girls in OPE ee ee Lace Stockings, Pair of Worth Small ES ea nace se beeen we OG as ea Hieber we Laces and Buttons, Perfect Fit of Gaiter ON EO Erna er eee ee Ladder, All Metal Flexible................. Ladder, Best Inclination of Experiments Show Ladder Dangled from Plane, Motorcyclist SN 6 eicc chk oebekeet anes ANOS whee O86 Ladder, Lock, and Slide, Silo Door Mount- ar rier ree Ladder Made Inaccessible_to Children...... Ladder, Rope, Omitted in Mid-Air Aeroplane ee eet eben eee eo Ree a8 Ladder, Side, for Motorboat................ Ladders Combined with Endless Belt Con- veyors Aid Fruit Pickers................ Ladle for Soldering Wire Joints............. Ladle Lining Drier Mounted on Two-Wheel- ed Truck Lag Screws, Kinks in Making.............-. Lagoon in London Park Has Unsinkable Eee ere etre hee Lake, Crater, Lower Motorboat into from oe eee pees Lake, Croton, Overflows Dam for First NN Ae ol ee ie dt a Cite ee eee Ba ae Hed Lake, Far Below, Drawing Water from.... Lake, Ice on Catches Coach 574 600 502 715 897 429 434 592 274 142 153 914 304 752 914 914 747 914 264 528 138 278 759 752 362 318 951 202 225 395 29 44 601 538 114 918 433 454 587 633 182 462 555 777 16 703 458 Falling Railroad 537 ~ at

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2 25 95 ~ at POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Lake, Icy, Lumberman Dons ee Suit for Work beneath. .......cccccecs Lake, Steamer Drifts Eight Days in. Floe in ct eeab chess ehan hs ebeemees Lakes, Glacier Fed, France to Store Ex- 919 her ee rr ere 25 Lamb, Recumbent, Aluminum Cake Mold in c.62 cv vei enh eet haehe eh ee eee . 434 Lamp Attachment on Electric Iron........ 435 Lamp, Automobile Trouble, Is Adjustable. . 622 Lamp, Blast, Nasal Spray Forms.......... - 635 Lamp, Desk, Made from Odds aaa Ends.... 472 Lamp, Electric, Catching Thief of.......... 784 Lamp, Electric Drop, Simple Method of EE 0c ra t0k bh Aes a OES Rate ee Oe 941 —, Electric, Is Combined with Phono- ors lamp Filaments, New Process of Fusing EE do hired Cad ee hee howe eee a 916 Lamp, Floor, Bookshelf Built into. ibiit ie tact 796 Lamp for Bedroom, Made from Broken Doll 466 Lamp, Hall, Made from Bottle............. 76 Lamp, Kerosene, Unbreakable.............. 958 Lamp, New Auto, Vacuum in Intake Mani- NG ec aad snaked amnmhe aden ee . 744 Lamp, Parlor, Stand for Is Aquarium....... 183 Lamp-Post, Park, Drinking Fountains at I EE ant wie wade an ain ah eu ade tei eh a ote 544 Lamp, Reading, and Chandelier Combined, New Bilectric Fixture. ......ccccccccceces 616 Lamp Reflector and Protector, Tin Funnel ea eae err reairrs 140 Lamp Reflector, Radiation Pyrometer Makes I, Mahia x toast ich sesh i eich Dee So ge wg te 779 Lamp, Ruby, for Photographers............ 955 a Shade Rotates and Shows weed of 982 Lem Shades, Movable Reflectors let 20 Lamp, Showcase, Sheds Imitation Daylight. 745 Lamp, Table, Pedestal Makes Floor Lamp of 753 ame. Table, Shell Casing Makes..... coone SOU mp, Vacuum, for Acetylene Work..... 929 — Wicks, German Railway Signal, Pot- ash Salt Prevents err 347 Lamps, Auto, in Fenders, Glare Obviated by 705 Lamps, Duplex, Cut Cost of City’s Street NE a a6 he i kde ta hb de Sk ade Wa a ee 371 Lamps, Floral for Street, Carry Out Idea of Portiand’s Rose Festival................. 236 Lamps, Glass Covers Prevent Gulls from PE c<Cecances vihedas beach awead aman e 737 Lamps, New, Movie Studio Lighting Im- I i fais at 0c as Suserrsn ca oc We ee 829 Land Reclamation, Drainage System “for Missouri Swamp Land...........ccscscese 392 Landmark, Wall Street, New York Commer- cial School Se a i re 410 Lands, Government, Pig Royalties Paid on ee gt a eee eae ene 678 came. Japanese, Lined with Flowering Bam- aD ai Kine Ais sich be Desa hae aoe eh a a orend 96 Language Society, “Simplified” Spelling EE Eo bs 5s bak ane oe Oe ae ee 832 Languages, 1000, British Drummers to be . , 2s are r= tar eror 868 Lanoline, Nonacid Process for Extracting from atc du sido oh ack bukdheie hain eeemela 164 Lantern and Picture Screen, Huge, Break - SN RG ik 5 onal ial mere mab bide donk aia Be «. 909 Lantern Light, Painting House by.......... 776 Lantern, New Projection, Simplifies Screw SE gc ccna nmebdedentoaenen 555 Lantern, Projecting, with Mirror Shows Water Wave Formation.................. 802 Lantern Slides, New Process for Coloring.. 66 Lantern, Stereopticon, Light Roll Film At- tachment Improves...........:-ssssecues 687 Lanterns, Ornamental, from Tin Cans...... 792 Lap Robe, Motorist’s, Clamps for.......... 434 Lasts, Shoe, Gauge for Assures Correct Form 182 Lathe Attachment for Grinding or Turn- . t. | Sena peetenreqetete aie 291 — Buffing, for Tires Runs on Bali Bear- 3 i esi ds io hts Wim taste ain ttc es dea 6 Lathe Goaser, Adjustable, “Has High Speed rs 5 n'b ak oend be baa ein OWS daae 267 Lathe Center for Small Work....... ceeeone 301 Lathe Centers, Cleaning out......... piwmnwe 775 Lathe Dog for Turning Bolts........... . 477 Lathe Dogs, Small, Driver for.............. 615 Lathe, Improved Thread Tool for.......... 457 Pe, Ci. 6 6 6 ckdaeeee eeeen eee 606 Lathes, Dental, Have Glass Topped Shields. 234 Lattice, Aviary, — to Form Sidewalk Dis- play 33 Launchings, Sidewise, Guillotines Replace PE Mc ed erases evdeeawesoteeKaboaens 547 Laundry Marks, Machine Prints on Clothing 111 Laundry Soap Prevents Discoloration of a er eae 461 Laundry System, Slate and Numbered Hooks PO, Gh. 0 ccc hc etn nebekeceesesooreecens 879 Laundry Tubs, Stationary, Live Bait Kept in 946 Lava, Mexican Volcano Fills Valley with... 750 Law, New, Needed to Save American Eagle. 829 Law, Robert MacMillan: Nature Forced to Make Ice in Sands of SS" ) "Aaa ree 331 Law to Prohibit Exportation of Helium Pro- OT EPP rer rr ee 558 Lawn, Cave Under, Is Garage for Residence 582 Lawn Fish Pool of Concrete............+... 748 BWR EMO BES COSMO cece ccesevsceseneses 924 Lawn Mower, Electric, “Weighs Only 125 PE Sev ctadaun dace esd neeaee ys 40 8h30 08-0 805 Lawn Mower, Golf Course, oanpeed Pushes. 853 Lawn Table on Tree Stumps..........+.56. 947 Lawn Tea House, Seapended Table for..... 749 Lawns, Large, New Sprinkler for.......... 38 Laws, Ancient, London's First Skyscraper WE Sh cccdh sec cd Sb cKO ER ADO RATED Se eens 726 Laws, New British, Trade-Mark Reform Ob- ) Sennen ren are 922 Lead Burning Outfits, Inexpensive, for Users PO) rrr rrr 351 Leadfoil and Iron Composition Lining sped Containers of Radio Active Substances. 44 EG Gh POEL, PRIME TEORGB, oc ccccccccccccers 64 Leak, Traveling Plug Finds ‘in is: 6eaee 122 Leaks, Oe NEE Gls ccs cana cceesecne 6056 —— in Roof, Concrete Belt around Chim- “4 DS 5.0.56 2:08 00 sde ks hea bens 2 tn «O 287 Leat er Belts, Old, Chemical Baths Re- DOPOD oo oho bos 608650900968 650806% 202008 416 Leather Belts, Old, How to Patch........... 782 Leather Disks Shield Hands of Motorcyclist 336 Leather Hat Box may be Attached to Auto DO I, nb 0546056056054 660008200 752 Leather, wopererens Dies from Real Hides DE wiecedteccsbenactasaebkaneenneeeanae 263 ie or Canvas Repair for Auto Low ene Leather, ‘Rawhide and Tanned, Make New Pel rTP TTT eee 39 Leather Shields for Auto Fenders.......... 64 Leaves, Table, Bookshelves Made from..... 472 Lecture, One Minute, Metric System Units Pe Pi ciceedensevbeanen beh ea eanne é 639 Lecture, Street, on Danger of Matches Given I a 921 Legion, American, Warned "Against Loss of SO PG, ices ceKescecepeuseseere 836 mon, New Variety Grows as Large as EE Err re re erie Te 630 Letter, Best Business, Trophy for Writer of 480 Letter Copying Machine, New, Has Self- Feedin kvinan shes Gotusdereernees 359 Letter, Pictured, Brings News of Lost Com- SE scb0aveseid new bis OcES CUD ReKeeSKEné 639 Lettering or Paint on Glass, Steel Wool Re- See ee Terry rere 127 Letters, Business, Ringlike Device Creases.. 546 Letters, Old, History of Jews in Africa Re- WORE Ol ctkcakodddesagheaeeeeeancenes eae 814 Letters, Press Prints, Ageresnes, and Signs. 360 Lettuce, Head, Rubber Bands for........... 937 Levee, Augusta's New, Foils River Flood. 756 Lave and Protractor Made for Use with $08 Level, Carpenter's, Work Drill at an Angle ane mM. , Sandpaper Prevents Slipping of..... 605 UGE, BEE WOOO Mba scpnsccecewversseccene 319 Lever Tightener for Bucksaw...........+.. 472 Libraries to be Installed - All Ships of United States Merchant Marine.......... 502 Library, Chicago’s Public, Post War Jump Se COND Gis ocaccccevesavecedsevcees 429 Library, Congressional, Splendid Organiza- tion and Equipment of........-scessseees 722 Library, Los Angeles Public, Advertises in WUE PEMMMEE. co ccccacenccgevesesesess 436 Library, Madrid, Spain, to Have Branches in DE Win cn cess ccascneeaosecsegesses 674 Library, Motorized Branch, Serves Large Parra ere ee eee 714 Lice, Due to Lack of Soap, Spread Disease e.g nas 0.0.0.6 03960040 5000000000608 588 Lice, Plant, Tomato Foliage Effusion te 137 License Plates, Old, Protect Auto Floor. 126

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ai -—— 34 License Tags, Auto, Make Street Signs..... Life Belts, Liquor Smuggling Devices like. _ Line Gun, New, Waterproof Shell Used Lite Lines on Ocean Beach Securely EE Ch Acaceken pe akee + Cen Kee ren kad ees Life Nets, Workers on Ice Covered Sub- MAMTIMS PYOCOCIOG BY... oo cc ccccccscesccses Light and Reflector under Trimming Board MEGS Wh THAPREEIRE PUOMGR. «occ cc ccccscsss Light Fixture Holds Nail Brush for One- Armed ha Cathe dtie ida dah o> ee Gee eee w Light Fixtures, Socket for Vacuum Cleaner Protects Light for Motorcycle Repairs.............. Light, Invisible Rays of Used for War Sig- Si al lin adh Si Gio sb Wee co sedicak ih eh a Light, Plant Growth Determined by Light Rays Bent by Gravity............... Light Rays, Einstein’s Theories Concerning Will Remain Popular Mystery........... — Rays Ring Bell; Sound Waves Run enter. Steamship Funnel Falls on Deck of Lighthouse for Airmen Throws Vertical ERE ee eae a ~peeney French, Has Huge Metallic Mir- ee ee | ite: srg enarialparay Birreeaeneas rete Mahar aytell Agi house. The (Poem), by Lydia M. D. rere ere eer rT ee Lighthouses, Radio “Beacons” may Replace “i —, New, Converts into Read- ee ay | Lightning” Arrester, Plural, Saves Telephone EE. Sia atds Gara onneee hsb ike ae aa eek a Fire, and Flood Destroy wane Laghtning. Telephone Protected from... as ae Flood, Ice Skating Rink Illuminated Lights on Instrument Dial, Aeroplane’s Trim “" 2 SAS ea eee Lime Chloride, New Form of Hastens Ce- a cee hbase eRe eK ne ae Oem Lime Chloride, Rats Scared Away by Limousine Body, Electric Taxicab Has... Limousine Fitted with Writing Desk. Limousine, Motorcycle Sidecar _— like. Line Guard, Effective, for Blow. . Line, Self- Winding, for Garden Liners, Bearing, Clips Hold......... Lining, Brake, Scraps of Utilized ae et. Matrix Grip, New, Fonts Changed ES 20k Wie a edb danas abe oh onedee xe Liquids, /¥-: FER for Mixing. ...cccers _——e — and Whiting Prevents Rusting Ce ee a 7 ee eens Liquid Manure, Cistern for................ Liquids, Glass for Giving to Recumbent Sn) wis de nee a wah bee Wie we wd hace os Intercepted at oo RE OO ere ae Liquor Smuggling Devices like Life Belts. Live Stock Corral, Modern Methods in Con- ET 25. aca oUt ae Gade hdl e Oak-os owe ein Live Stock, Young, Movable Pen for -_ ~ ty atform, Elevating, for " Electric DE, dita ned usive.«s emiae es car bs ke memeae Loader and Screener, Mechanical, Delivers Gravel in Three Grades.............ccee0. nae, Automatic Wagon, for Difficult Ma- a atet hink ate eieG Wa aes hia.4 Wine Rh im bhi fe gO eee ere Lock and Jack, Auto Bumper Serves as.... Lock and Knob, Combination, for Door Lock and Protector for Switches............ Lock and Rack for Garden Tools........ Lock, Automobile, Makes Whole Steering Gear Dt (rth dnaGh shake ebne ee whoo « ° Lock for Drawers, Stiff Wire Rod Makes... Lock — bg DU bAmEbkeeeh eke he vnanaee Lock, for Screen Door..........0... —-_ = Slide, Soa Ladder, Silo Door Mount- lt NG i 6 Rib whee dleeS 0 vs oe bees Lock, in on Sliding Door 622 - 658 429 550 439 511 - 658 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Locker, Portable, Houses Welding Equip- BS ccc bwesescecnrenncseceersaesessesess Lockers, Delivery, for Kitchen Elaborated.. Locks, Panama Canal, Cause Peculiar neieeed TTT CTT PUTT TTT CTT CTT Locomotive and Tractor, Combination tor South African Railroads................. Locomotive, Combination, Has Gas and Elec- ) Se Peet ree Locomotive, Electric, Wins Tug of War with EE Cucina amd ae ea ee eben 66e 0 eee ee hee Locomotive, Exploding, Crew of Saved by Dt. vveewsedibaketeauenbadeesea Locomotive, Explosion of Blows Away Cab. Locomotive for Narrow Gauge Railway, Au- SEO TOOONOR. a ces ccc wiscasciccceene ee, Instrument Records Movements Locomotive, ” RRSP Ste a Pry Locomotive Plowing Snow Lands in Swamp. — Self-Propelling Toy, made from . eer ere err ee —_-v Stalls, Each Has Three Smoke- Dh: trp ech wea eeeuehas We eihwedeibonas Locomotive Tires, Burner Removes Rapidly. Locomotive, Toy, Electrically Driven and EE dina é kha 6 eR Mee ahee eee a ee Locomotive, Truck and Trailer Move....... Locomotives, Five, we Railway Trains. Log, Flower Box from................ Log House Built ys Aschangel. Russia, for ee rear eperen Logging—Lumber acks Who Live on House- boats, by J. Serr ar a ae } as, mangers Use as brtreped re ee ee ESE ei a Terr Ee Lumber Makes Hills at Tractor Exhibit. Lumber Mill, Western, mangene Saws in a eat Al ate te Lumber Transport, Turntable — on Truck Dn. .cnsweteneséuneee deh sens ee eee Lumber Yard, Simple Conveyor System for. Lumberjacks Who ae on Houseboats, by J. B. aaa Sain aok ae aie eo ae ek ow ele Lumberman, Diving Suit Donned by for Work beneath Icy Lake.................. Lunch Wagon Is Institution of National Dt tinh chewsedetwienkh seis ods obo hens o0 Luncheon Baskets, Handley Page Paris e London Air Liner Sells................ Luncheon, Prize Cow Honored “Guest ae Lunches, Carton, Dumb-Waiter Serves as Tray cudéeiekawedese> + Macfarlan, Allan A.: Pee. Stic escaeeecdsesdans a Belts, Old, Chemical Baths Make Machine Drilis, Heavy, Move like Traveling CD choise é0emakeeceeie es éene asst enhea Machine Guns, Eight, Planes to Carry alii akin bel ahsas ok’ th Witasatae ata he ee Machine Shop, Gummed Paper Useful in.... oe Auto Made to Run with Pair of OT SO 6 aaa eee Magazine Rack in Porch Swing Magic, Marksmanship by.............es000. Magician, Home, Card Finding Trick for.. Magnesia Stucco on Timbers Protects Mines By Sa ona 085 655.600 60S 4 H06 22d 0 eC 0se6% Magnesium Chloride Cement, Improvement of Magnetism Detects Flaws in Rifle Barrel ee | eee eee ee eee eee eee eee eee ee Steel Magnetism, ‘Earth's, Has Physiological Effect Magnets, Rectangular, Used for Lifting BOtRS PRRGR ioc cc ccccccccees —_ er Collides with Factory Chim- Mail Y pccoianen, Nonstop Delivery by Prob- Oe lixccchaten- secede se Guhteete ss 42 enue Mall “Aeroplanes, Remodeled Gain in Speed OnE COPOCItY ...cccccccccescccccvesccccese Mail and Passenger Service, Aerial, Links Murman Coast to Finland................ Mail, Baby Alligators Travel by............ Mail Box, Rural, Fastened to RSSSES Conmarete Pest... cccsccccscscscsce ° Mail Opener, Print Trimmer Used iota Mail Planes, Asbestos Containers — Pouches OM........+eeee0e KcvttWensawes 103 654 219 649 359 674 384 653 62 334 646 748 158 870 a

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384 653 62 882 269 40 727 919 270 24 34 708 iw ° POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 a Planes Keep Admiral in Touch with Pe. De Dee ree Wor Mail, Rural, River Route Used for......... Mail Service for Parcels, International, CE BUOMOG soc ccccsewessceriogences Mail to be Carried by Larger Cargo Planes. Mailing Tube, Fastening Contents in....... Mailing Tubes, Postal Scale Made from.... Main, Oil, Advocated from HAvre to Paris. =e. Gas, Leak and City Street Spouts oe Malt Sirup to Take Place of Sugar......... Man, Kentuckian, 131 Years of Pies. Plays I Man, One-Armed, Light Fixture. Holds Nail , % Saar ree re Mandrel, How to Make Oval or Flat Coil 0 RE eae Mange, Government Veterinarians Use — rT Mangle Cuts Pay Troll of Stocking Mill..... Manhole Form, Concrete, Dishpan Makes... Manicure Supply Receptacle Has Five Com- OO Err errr Manifold, Auto Engine, “Replacing ans ee aie => Auto “Hot Spot,” Has Adjustable Manifold Heater for Automobile Engine.. Manifold, Intake, Concrete Block Heats. “Teaction Intake, Steel Wool Heats for Easy | RRS Rens Sepp ees Manifold, © bake, Vacuum in Regulates New eh aa aa make ote 2 Manual Training Boys Make Furniture and EE a 5 aks og sme wake & bw Re ave Manufacturers, Five Thousand, to Have Dis- DUMP Uses th PAPE. 2... ccccccccccccccs Manure, Liquid, Cistern for................. Map Makers of France, Busy, Watch Peace SED crcnekenwsbisceses scan henaeneeee Map Makers, London's Aerial, Clouds and a BR errr rrr ee Map of South America, Copper Mine Yields. Maps, Two New United States, Two Projec- tion Systems Used for.............-+00.. Maps with Mechanical Guides Direct Stran- rt De BONED: nvcccccawasancneaeess Mocatbea. Olympic, Course of Selected by DT Ppa ay re errr ee Messages, Long Distance Telephone, Simple Ce Ce. see en te eeeenbaneeeeesen tee Messages, Photo, Russ B Spice Carry on Eyes Messages, Wireless, Naval Communi- cation Service ae to Belgium at Low PE: cc cer daeKenecd ere nae es eee seen Geet sa Metal. Aeroplane, American [+ chessenede@aas was s ke ee eae Metal Dust, Ignited, Factory Walls Bulged DE caewebws soe se 4b SSESCAGTES ES CRORE ROD 664 947 921 . 892 854 926 83 953 632 755 633 173 653 15 760 685 801 224 754 514 640 69 55 702 583 863 560

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iach ee ea a

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Metal Expansion Thermometer, ES ad Os aha Wh ae oh oie eae + ow ve ead Metal Float, Hollow, Paraffin Repairs Leak in Metal for Soldering, Brush for Cleaning SRE rar rea “a Metal in Eye Removed by Unusual Method Metal Ladder, Flexible, of Novel Construc- NE afaik tnt Nes alia Bias pba Reece: Ae oe ate sek Metal Melting Pot, Portable Bench Type >» ER en aay = — Paper Clip, Handle for Draftsman’'s ices sok ink a: mdr ‘Wh ines hs eh cae aie Oo we Metal Plates, Rectangular Magnets Used ie ace nls 4G 05g eR A eae ah ee a Metal Polish, Liquid, Small Nut Breaks I ah tata ate i die ih or ss oe W' 4-Orn. 0 wd oe ee Metal, Potato for Keeping Cool............ Metal, Sheet, Shear Jaws Cut......... - Metal Sheets, Painted, Holding Apart Metal Shortage Makes Ivory Sculpture Ger- > | > aa renee Metal, iyde. and Sawdust, Water Separates. Metal Type, Korean of 1403, American Mu- TN ais Wontas ya Wk O85: Bead SGA Ne mS ee Metal Work, Flat, Accurate Angle Obtained OE on... xcanenseessteeens ——., + emsapamvany Band Saw Cuts by Grav- RM ca Cig ning aalaass «dias o sd 40m ee eae Metals, Pot for Melting, Electrically Op- DE Aces Candee ae edu ebsebe cee bee see eewn ee GAO BOP ci ca neceeasceesieceus Meteorology—Tornado Subject of Study in I, Ste 5k a Oa ade wk Eoin ele ka SS oni ee OA oe Meteors, Flight of Tracked by Apparatus... Meter, Electric, for Patrons of Central =e Ser are eee Meter, Gas, Electric Current Operates...... Meter, Rate of Climb, New Aeroplane In- RE ee eer Meter Records Vibrations on Revolving DE ciidt te cebi seb Dc ecGhad we anne ce eas Meter Shows Fuel Used by Auto........... Meter, Thrust, for ae Propeller.... Metric System Units xplained in One SN NOD on ohn. 44 00-84 010.9 0:6. 6 K04 0d O50 Metronome, Photo Prints Timed by Sound of Metronome, Prints Timed with............. “es Modern, Electrical Toy Repre- Mica. _ RY X-Ray Examination Finds Flaws in Qui ckl | EGET LTS OR re Mice, Many, Simple Trap Catches.......... Mice, Mouse-Proof Posts Keep Out of SAE ee er nar Micrometer Caliper, How to Grasp......... — hone Probe and X-Ray Used Together n Surgery Cr a Fish Microphotography, Simple ................. Migration to Palestine to Be Systematic.... Military Tank, British Gorernment Rewards I a orp fa rd ca ani Sees ral igh ee > eg Milk and Ice House, Combined, for Farm... Milk Can, Root Slicer Made from........... oe by Truck in Tank like Vacuum te ag a de res Ws te a on Bese oe dC Wik oh tes Milk, spans Make Close Counterpart of. Milk, Skimmed, How to Mend China with. Milk Stow to Prevent from Slipping....... Milk Ticket Signal Circuit................. Milker, New, Single Hose Connection Fea- NE, sib Satie mack dich @ © Wm tae ee acah ahh oe a's ee Milking Machines, Bull in Treadmill Runs Mill, xperimental Cotton, Textile Indus- NS Sak hs Sle St ad aaa @ Gide wit ae ase Mill, Flour, Exhaust Gas Heats............. Mill, Steel, Ohio’s Newest Wholly er jae Mill, Stocking, Mangle Cuts Pay Roll ill; Sugar, in Florida Nears aw hy and ow aici ao wee ae aie bb @ aceon Mill Waste, Charcoal Obtained from by A Ere re en ill, Western Lumber, Largest Saws in ON FEE A ae ere Milling Machine, Graduated Vise Jaws for. Millionth of Inch, Steel Gauges in U. S Bureau of Standards Measure............ Mills, Textile, Big Vacuum Machines Sweep Floors of Mine Cave-Ins Cause Houses to Collapse.. Mine, Coal, Concrete Headgear Planned for Mine, Copper, America Yields Natural Map of South 156 460 139 439 884 922 297

$6 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Mine Explosions, Analysis Detects Blow Out Shots in . 7 es Cee Pee eee eee eee eee see eeseeee Ce es Mine, Salt, Motion Picture Show Given in. =e Shaft, Gold, — Through Garage __. 2A eee Coeeeererseesceseeses a Ce Mineral, Tarry, Found in Cracks of Utah PE Acc cicbatdens CORREA MS ae kOe hana ~ Minerals, Iron, Sonper, Marble, and Gold, Armenia IIE si inca ka Wa ab gk We og 8 a Mineralo Bn 1 RE Splits Rock Drill Ce OE swecccncene Miner, Single, Operates Hana ee Miners, Drinking Fountains Supply with So» Alacra epinaa a Ts tone lamp Mines, Odor Spreads Alarm in for Fire Drill eee agen Cval, Worked with I deg hal Meeks Ons te ad hat a ee Badin. Mines, Timbers Coated with Magnesia Stucco .. _ * "_S -eyee pete Mining, Coal, British Company to Finance in Portuguese ere er and Hairbrush Combined for Pocket Dl ssc ApU the enebaw dnd <eeidaseuéuc anes Mirror, Hu uge Metallic in French Lighthouse Mirror, Indicating, for Auto Measures — Sk =e eee Mirror, Large, to Be Theater Drop Guriain 6 Mirrors, Denar a cee eeeET Shells th cack ewe dekh ewan 64ee 6 Rae we eee Mishap, DPE Sn cccetered tanh nen Sea ee ded dae 6 Missionaries, Church, to Take Moving _ tures in Northern Africa ond Far East. Mitering, Special Square for. Model Aeroplanes, Outfits Sold for miedo Complete ‘Construction Largest Airship Hangar, on Exhi- Model of Maori Chief on Exhibition........ — S of be Wilson, peed Cook Makes oO ME ccsdesianeesc ceed gereasersocerces Modistes “Make ‘Flying Suits ‘for Women. Moisture, Absorbent, Jar for Crackers Has RE WD ng dn ggb 44045 46.6000600800-60400 Moisture on Windshield Prevented by Appli- cation of Chewing Tobacco............... Moisture, Removing from Air Blast........ Molasses Press, Old Wringer Makes........ Molds, Concrete Wall, Change Shape for a ees Sa oe am Mole Trap, Powerful, How to Make........ Molybdenum Sulp hide, Improved Process for Changing into Metallic Molybdenum.. Money and Farms Offered California Home- steaders Money, Huge Amount Spent for Lincoln DP tte set nn ete S eka Wed Cae k Oa 8 + ese Money, Paper, Distinctive Portraits to be Used for Various Denominations......... Money, Variety of Complicates Financial Transactions in Siberia..............6... Monkey, Educated, Trainer Purchases Oe ccc cadienswess ¢ise000004n 0. a Wrench, Old Small Jack Made Dt Cisne ea diskictneepemeacsavoavened Monograms, Paper Die Embosses.......... Monoplane, Newest, Airplane Rednced to DO SE Mivvcccas cabeeeebeses e040 Monorail System, Toy, for a toe Sire eres Monument, After-the-War, Y-Gun Is....... Monument and Burial Vault Combined in i eis ceken eae Oa ROO 6 on0's Monument, Arch, Livingston County, Illi- nois, Honors Service Men with........... Monument, Maltese Cross, over Graves of Famous Race Horses .......-+cseeeeeeee Monument, Prehistoric Stonehenge, Guarded against Further Collapse Monument, Unusual Granite, in Lexington, DEE osc ct6gvsccencaerecconsses Moon, “Shooting to” a Possibility.......... Mooring Devices, Breakwater, of Strong REET rte Mosaic, Old Hebrew, Turkish Shell Unearths Mosquito Breeding Pools, Doctor in Airplane Charts oor eee eer eee eee ree ee eeeeseeeeeeee 426 708 580 647 845 788 455 312 707 0 908 828 909 263 847 587 324 344 573 ‘6

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426 198 708 492 874 881 732 395 595 592 206 438 506 658 189 139 153 845 788 439 111 530 587 324 344 573 844 % POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Meee. on Meadow Land, Nitrate of Soda ee eo tae (2 eee 853 Motor, Air Cooled on Wheels, for Many i. ASS ea eran rer 686 Motor, Air, Drives Toy Aeroplane........... 118 Motor, Auto Starting Propels Coaster Wagons 133 Motor Bus, Big, Finished like De Luxe 68” ae err eee 848 Motor Busses, Larger, for London Streets... 240 Motor Cars, British Army, Many Produced Se Dy sc eseccr ee eeeses vas encneeuanes ous 382 Motor, Clockwork, for Child’s Tractor and INL stp tie 6 6'409 eck oe oe & 6 ha he oe acne ee 41 Motor Driven Cranes, Huge, Electric Bat- DE PD Seupdeccdodee tah keuwaaeaddacu $03 Motor Driven Pump, Jardiniére’s Fountain I ra ok oad ei icin os mic a ete ae ww ih eee 914 Motor Driven Saw Bench Has Tilting Arbor 843 ——, Electric, Churn’s Dash Paddle Run 7 Ctheehees.s dea h 6nd 6 05.2 d4R Sa 08 ao O0 dee 914 Motor, Fan Clutch to Give Driver Better EL eRe er ree rere 918 Motor, Four Cylinder Marine, Has Many I | i sa 5h wile ie ake ese we 842 Motor, Household, Mounted on Tripod...... 370 Motor in Stool Base Helps Photographer to . f __ eer har 599 Motor, Large Dasher in Newest Dishwasher Driven rrr rrr err 806 Motor, Little, Has Splash-Proof Housing... 268 Motor Novelty, French Sidecar Taxi Is..... 108 Motor Novelty—One Man Three Wheel Auto i... £ f " —" Sareea 4 Motor, Overhaul Stand Holds in Any Posi- SE. cnn tees beaks Cie R needa aaah es he eae’ 732 Motor Parking Spaces, Numbered.......... 461 Motor Pistons, Iron, Special Design Makes BE ‘ccuhep ines s beds OeA ihe ca wae bee ees 750 Motor, River, like Pendulum, Irrigation Pe icc sie taeheiwen ecw ean ewe 826 Motor, Rotary Sleeve Valve, for Farm i en ok eb bade hedearcee as ae’eeewe 838 Motor “Scooters,” Improvements in......... 494 Motor Sled, Extemporized, Makes Speed ne Gees EE os nccawedas eelee aus we 885 Motor, Small, Greenhouse Soil Sifter _... . 3a} Sr nace 207 Motor Trailer Home Built of Aircraft Ma- DEE. Aesdewepissosgeebasdupanenes tee tea 538 Motor Trip, Supplies for Carried in Novel EE ic nccee heen Caw week eee abe bee 332 Motor Troubles, Simple Contrivance Locates 362 Motor Truck, Army, Is Recruiting Station.. 682 Motor Truck Axle, Improved, Carries Gears tc aeseia x0 Gees Ohad sehen Cuan 405 Motor Truck Capacity, Portable Chicken Pe OY shdcdvksanegneeacevicnv anes « 45 — Truck Carries Ship’s Plates and Fun- e617 Motor Truck, Giant, Portable Wireless Sta- DN Me side enw s tenes s heaed os © ebew On aes 76 Motor Truck Hauls 40 Ton Casting 21 Miles 239 Motor Truck, Health Board’s Theater and eee Ee re ea 395 Motor Truck, Montana’s Big Road Program I CU 0 nda eee eee eae ah ea bee 391 Motor Truck Moves Bees to Harvest Fields 602 Motor Truck, New Dumping Body Rises and EE ice 08 de 06k hE AD EROS SOSA Re Ae Oe 816 Motor Truck, Removable Power Plant Fea- freer 858 Motor Truck, Seven-Speed, Takes Heavy CT cbc hie hhe es hig dit nea aba ae 66 o 758 Motor Truck, Toy, Electrically Driven...... 151 a Truck Turns Tractor to Save Wheat 510 Motor Trucks Act as Switch Engines during 054s ea kbk esha enews eds kirken ane sean 713 — Trucks, Endless Tread Attachment ser Motor Trucks, Special, Express Company TIO OO TORE VOD BNR. oc cccectecesvecenas 242 Motor Vehicle, Hybrid, for Package Delivery 492 Motor, Water, with Paddle Chain........... 608 as Wave, Waste Power of Sea Utilized og DT tutinee back kakd dae e ad eee ease ia aeke Motorboat, Emergency vey | Mast on..... 390 Motorboat, Lower into Lake from Precipice 636 Motorboat Passenger Fleet Suggested for Pee Ry eee 737 Motorboat, Shallow Draft, Is Houseboat and oc cniad etek ae Sas hn bee ow ede * 917 Motorboat, Shallow Draft, to Explore Rio Negro, in South AmericA.....ccccsccccces 194 Motorboat, Side Ladder for Motorboat Used as Mail ee SY CED stdccareescecvceteeanas Motorboat Used to Take CEE cc cccaneskebnsdsesnedcce res Motorboats, Hanging Shelf for Motorboats Hunt World, by H. H. Motorcycle Aids in Ice Harvest “Wagon” Pirates of Motorcycle, Collapsible Passenger Seat for SE EE Fé pe eK E Rb AAE WOE D6 Ew iow Owner a Motorcycle Engine Used as Power werent Hoist Motorcycle Equipped for Fresh Egg Delivery Motorcycle Needle Valve Made Adjustable... Motorcycle Repairs, Light for.............. Motorcycle, Roadster with Simple Body PE SEE co caccardeares eer ecnaeccdsiennes Motorcycle, “Shoe Hospital Ambulance” Is.. Motorcycle Sidecar Built like Limousine.... Motorcycle Sidecar, Duck Boat Made from.. Motorcycle Valve Cage, meerorerrat Climbs Ladder Dangled from DD. 26 tcc d teens be aekeeenhae es Motorcyclist, Leather Disks Shield Hands of eee Soars 87 Feet for Moving Pic- ee ee eee eee eee eee ees eee eeeeseeeeeese ee Motorcyclists. Score of New Records Set by Motorist, Combined Head and Tail Light is Convenient Accessory for...........+s2+- Motorist, Steel Clamps for Lap Robe of. Motorists, Change in British Columbia Road §&. (£ Yo SARS Motorists, Gasoline Thieves Make War on.. Motorists, New Tool for to Put on Clincher rere er er eee Motorists, Railroad's Name on Bridge Helps Motorization of Domestic Elephants to Hunt Wild Species, by * FF PP Motors, Gas and Electric, Combination Loco- SP Ktcnctdcensacesnw habeas se 04 se a0 Motors, Starting, Inspection Table for...... Motorship, Large, Danish Shipyard Launches Moulton, Robt. H.: New Orleans Public Elevator............ Theater, the Cees in the World ° Mountain, Dakotoans Name for Roosevelt.. Mountain Road, New, Ridge Route Open to Traffic, by John Edwin Hogeg............. Mountain Trails, Cyclometer Measures..... Mountain, Volcanic, on Unalaska Island, Sulphur Discovered in Crater of......... Mountains, Denuded by Forest Fires, Air- Ss SR DONE. .astccccearersveosgenes Mountains, Rocky, First Flight over Peak GE, DY F. B. CHRPMGR, ccccccsccvccestenes Mountains, Tractors Pull Sight Seeing Te PP conchae ene dosbeees 0ébeseseves Mounting for Auto Horn Button............ Mountings, Eyeglass, Tool Makes Spring Sy CE skavenenccen6ecndsenvns cena couse Mounts for Photographs, How to Prevent TO sc vcee nc ae hte ee aes Cee ReEC sea eia Mouse Caught by Live Oyster.............. Mouth, Second, Salmon Provided with by Re ccercnbsvisah cane baees waked ens Mouthpiece, Novel Interior Telephone Has No Moving Picture Films, Protection for While DE cdccsusatnedessenepechsnetieggee Moving Picture Films, Chemical Fire SN GE. bc nan0n.000 0p 5059s easdes's Moving Picture Frame, Tool for Cleaning. Moving Picture House in Archangel, Rus- Se Oe PO vccccnrcaateeeeeesnatena Moving Picture Laboratory, Siberian, Evolved from Junk, by Phil Norton............... Moving Picture Show Given in Salt Mine. Moving Picture Studio “Theater” Is Simple PE Tr ere Moving Picture Studios, New Lamps Im- WOOVO TAMMAIRE GE o coc cccesesesvccesesves Moving Picture Studios, Two being Erected Dh CEE ctvcttneeéade sense eobeedde resend due Moving Pictures, Airplane : Auto Produces Wind for................. Moving Pictures—Altitude Effect Gotten from Posing on Tunnel’s Edge........... Moving Pictures—Auto, Failing to Leap Gorge, Falls Hundred Feet............... Easy Repairing of 15 193 132 165 391 100 717 133 112 153 639 432 904 461 536 765 282 887 492 578 829 602 906 889

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ae = a : | ih 1 38 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Moving Pictures Show Blood Movements... — Pictures, Children Learn Grammar Moving Pictures, Colored, Triple Projection I ad da ps6 ah de ins a cs a Oe le la & Moving Pictures, Cylindrical Scenery Gives 2 CE Mies done cae eee nee oa women Moving Pictures—Dummy Rehearses for I he hy oo las reales kde ah OUR BT a a el Moving Pictures—500 per Second Film Ex- ere arr rte reer Moving Pictures—Huge Screen and Lantern Break All Size Records. .......sccsseseee Moving Pictures—Missionaries to Take in Northern Africa and Far East........... Moving Pictures, Motorcyclist Soars Eighty- re hve wha eee Cans ak denne ae bo Moving Pictures—New Printer for Use in SE Caicre nian dae chica cied ark alee aor eh Ae ean a Movin Pictures, Reconstruction Problems Studied in Moving Pictures, Translucent Screen Per- mits Daylight Showing of................ Mower, Gasoline Tractor Attachment Is.... Mower, Golf Course, Tractor Pushes....... Mower, Power Driven Lawn, Weighs Only 8 Eee rrr re rer eee puctiege Bottle Has Push Valve at Top Mud, Beans Separated from by Odd Machine Mud Jet, Experimenters Study Action of. Mud Scraper on Shoe — Mudguards for Toy Wagon................. ae mgt fA Tree, Better, ter Silkworm Diet. Mule, Lame, Shoe for .................... Municipal tg hae Ea Operates Street Car on Abandoned Line.................. Murder of American Airmen by Mexican I dm esac Sita an cea meee dbs Adak ee mie we American, Has Korean Metal Type &— . SrrrrrrcrerrrT ert rR TT eT ee eee Pa ee Museum, Field, in Chicago Acquires Two ee ae ae ek eb en aiee eee Museum, Paris Costume, I Sidi coh at el Sac ahah at hao ealicas Sah Gorin ro) Sune ae Museum, Swiss, Sends Heart ee data a eee teee ks 4.06 bn os Music—Automatic Phonograph Plays One Record after Another Music, Skill Music Box in Chair, Weight of Child on a in on ak ah a te a er ©: id Music Dealer Has Delivery Truck with Body like Phonograph Case Music Disk Is Alarm Music—Indo-Chinese Laborers with A. E. F. Use Makeshift Band Instruments......... — Instructor of Wireless Gives Program ae sa Aa aa a cna 0.6 a 40d os 8G od Music Kept Gm Meck OF PERRO. 2. nccccccccs Music paneeragnte, Sent i All Directions by Wi TE Kise adh tat aes wos i oe whew oc teve a Music, Piano, Animal Keyboard Chart Used for Teaching to Children................. Music Rack Makes Target Shooting Rest. Music, Typing Machine Writes ............. Music, Violin, Cures Prolonged Unconscious- Musical Instrument, Bass Drum and Viol ES ree eee Musical Instrument, Largest Played by Smallest ere Musical Instrument—Phonograph Has Two Amplifying Chambers Musical Instrument—Phonograph Changes Record and Runs Own Performance...... Musical Instruments—Ukulele Made from Hundreds of Matches ................... Musician, Smallest Boy, Uses Largest ES Ns ra te a ca gical gee aceaaicae we alee Mystery, Mechanical, with Empty Tubes.... Nail Holes, Sawdust for Plugging Nail Keg Makes Footstool................. Nail Keg, Shop Tray Made from........... Nail Keg Water Telescope Finds Lost Body Nail Sets, Handy Tools Made from Nail, Slotted, as Polishing Reamer Nail. Wire, Drill Made from................ ¢ Nailbrush Has One Row of Bristles......... Nailbrush, Light Fixture Holds for One rng ie tas ag wie Gh ace odd © ie ac oe Nails, Detachable Heels Fastened to Shoe a as bee wane eee deeb a hee ae wee Nalls, Driving in Cement................... Nails, Well Spaced, Boxes Held Securely by 328 918 855 554 233 383 209 189 724 867 134 Name, Wife's First, St. i EE ccna 66 oh eee had ad meee ee Nation, Brazil, may Move Capital to High } 6 -) 3S re National Parks—Mt. Rainier’s Official Pho- otraner Furnishes Proof of Mountain Climbin Nations, I ca dea Na Wid i eal ph le tsk a te wt Naturalist Reveals Interesting Facts about Da he rd iam oh Rg ie A a a, Naturalist to seek Origin of West Indies... Naturalization Papers Given as Diplomas in Americanization Classes of New Jersey ae a te Da bist Sk oe Se ORME OOS Rae o Nature Exhibits, Many, New York Public Pe Ce not beneenéuseagaceaee — Study, Trips to Farms and Parks Louis “Red-Blue Naval Base, Hampton Roads, Gains New Land by Moving Seashore................ Navigation, Range Finder Makes Safer.... —— New Term for “Aerial Navi- Dt BA tibiiCbte eee adhe eae ane eaake Ke waviention and Power to be Gained by Damming St. Lawrence ................. Navigator, Aerial, Now Called “Naviator” Navy, British, Activity of “Dover Patrol” Navy, British, Has Fastest Torpedo Boat NE de lak ao Ah in alls nd td ma Oo O.9 8 os Navy, British, Nonshattering Shell to be M Navy, British, Officers of Take Cars with Them When Traveling by Sea Navy, British, Uses Side-Wheel Boats for tO” =e ee ee Navy ee op Peete Rigid Dirigible....... Navy Builds rgest Radio Station at Bor- .. . ee rr Se err re Navy Construction DE cigs ccettabeerhddecncnepeee'a ve Navy Dry Dock, New, Big Ships Built and NE 5 ol rill he Ah SG ow ks ee Navy, Electric Vessels for Speedy and High ll, SER ae Navy Hospital, Old X-Ray Plates Make CS rrr rrr Navy, Italian, Cruiser of Turned Upside BL I a oo 5.06 0 00s ooicon sv encees NOVey 8 eee Battleship of Slides from Navy Otters Cash Reward for Improvement EE cit cin inpik ice hid a mean oe eae 5! deg Mew ee Navy Opens School to Train Photographers Navy, Submarine Chasers Offered for Sale by Navy Torpedoe Plane Makes Trial Flight. Navy Transfers Railroad Gun Mounts to Dt (cpncs tid seats bate kee CES ad? Kee dee 6 Navy, U. S., New Submarine “S-16”" Launched Navy S., Plans to Build Guns by New i SE dinis tc. aw pes 66:6 «ag ae oe ee Navy, U. S., Submarine “AA-1" Exceeds MT bi aw ag tabieina seed deo obs e Navy Wrecks Old _— with Dynamite, by aa eee Navy Yard, Paci “4 Coast, First Battleship eg | rere Navy Yard, Philadelphia, Has Crane with Lifting Capacity of Million Pounds...... Neck Halter, Safe Ti Necktie Rack, Clothes Hanger as.......... Needle Valve, Motorcycle, Made Adjustable Needles, Phonograph, Disk of Thin Steel ee he Oe rrr rere Negatives, Broken, Preserving of.......... Negatives, Photo, Pyro Developer Intensifies Nerves, Animals’, Grafted to Soldier’s Limbs : Nerves, Human, Act as Wireless Antenne, ocean dade hence ace ead we o> Nest, Wasps’, Violin Body Contained....... Nests, Bar Prevents Fowls from Roosting in Net, Tennis, Motorcyclists Get Raccoons ee with "Nets, Life, Workers on Ice Covered Sub- marine Protected Pe pen as hiked aks nea dee Netting, Wire, and Broom Handle Make Ce CED. os sdowiewsnciasecvowsce Netting ire, Poultry Feed Wastage Pre- i 2s a er ee Newsboy, Mechanical, Street Corner Slot I MED aie ks oid ae meee 6 x 400 Owe ode 8 Newspaper Carries Advertisement of Neck- Piece Lost from Plane................... Newspaper, English, Jerusalem Has First. a Shop, Small, Stereotyping Out- DA Anca se cehea. ee a aiaks web Fee haa ee 905 357 2 _ ww was lhe lhl hl hl ll hl lr?

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718 25 330 930 ee POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Newsprint Stock, Stumps in Cut-Over Lands Used to Relieve Shortage of Nickel and Hydrogen, Whale Oil Turned & «< SAR errr Nickel in Diaphragm Improves “Geophone” Night Flying, Private Airdrome Makes I (sb as iste dk e's Gla dle A a wi 7 Lamp, Electric, Made from Broken Plant, Government, RO Lr es ae Nitrate, Silver, Ink Made Indelible with... Nitrate of Potash Solution Used on Lamp Wicks by Germans to Prevent Smoking.. oareee 4 Soda, Moss on Meadow Land Sy als be earw ae ode nk eh ene ee ae eae Nitrates—Synthetic Ammonia to be Made by High Pressure Method Nitrogen, Air's, Britain Plans Huge Plant ee tek tedw ihe ébeS ede e ee ome eee Noise Maker, Rubber Band as.............. wo pews Surfaces, How to Electro- i MCehGjareannetow keekd oes adees werten, Phil: + Factory, Siberian, Evolved from Ss aie sahil aac da lars esata Sr nso nia a da Nose and Throat Troubles, New Medicated ME dah dee Da uiah aaeR Adie @aaeime a in Little St. ¢etn ceo tt ss tbe we OS ee dees eeee~ene es Notches Take Place of Cigar Cutting Notebook or Purse, Wire Guard for........ Notes, Bank, Javanese Hoard for Attrac- ro rr eee . ee Aeroplane to be Propelled by Air et Ph Ste bctok edie an heetaee eae an ane een Nozzle of ‘Drinking Fountain, Guards Protect Nozzle, Shower Spray, Dishes Rinsed with Number Plates, Electric, Aid Elevator Pas- I dy RAS a ian ah Gs ig Shp al at oh ic ee we Nursery, London, EE ein keine ia core wn eee ao Nurses and Doctors, Thermometer for Has Case with Unlosable Cap................. Nurses, Free City Hospital to Be Training School for Nut, Single, in seit, Holds New Demountable Rim Ce ee Shi Nut ke err Nutmeg Grater with Boslike Container for Nutmeg Nutrition, High in Oak Stock for Furniture, How to Prevent ENS eas er = — Machine Culls from Cultivated Dt crtenwengs bacasaawslcawae ee ee waa Observatory, Solar, in Egypt, Smithsonian BMMEEEUEIOM CO MOCO DIIGR. «onccccccvccescee Ocean, Atlantic, Aerial Circuit of Interests Ce a Ocean Bottom, Danish Boats Gather Stones Ocean Depth, Automatic Sounder Measures Ocean, Indian, Island of Mauritius in to RE GEE 0 Fa dni ccbdtenesd shea ae Ocean Liner and Airplane Models, Boy Builds Ocean Liner, New Polish-American, Makes Pk BED 6htevecends case nnnnepeavnbens Ocean Liner, SD Ob. 246. cs ene eeudseekeh edt guvene «4 Ocean Liner Stops in Mid-Ocean for Sur- geon to Perform Operation .............. Ocean Liners, ye a mi Ee Importance as Port for. .....cccecsccsccces Ocean, Pacific, Scientist Advises Haste in ft =F ee rae se Ocean Travel—“Leviathan” Rebuilt for OE TONOODD. 6.006 62csseeneond Oban es Ocean, Waste Power of Utilized by New i De .scctccnvee ec dee be eabed eae Odor of Banana Oil Used as Alarm in Mine Fire Drill Office Accessory, Envelope Sealing Appliance Oe Office hoocasery, Ringlike, Creases Letters 558 546 Office Accessory—Telephone Directory Holder Office Accessory -- Typewriter Copyholder Lights and Magnifies Reading............ ae Building, Feur Story, Occupies Small office Building, Koof of Is Winter Home of i. sheetet edad en dkeee Gh eakd he eEsu ead wo6 4 Office for Chief is New Bolivian Police DE. ane ithe ln Maen ae keene ee ke ake aee Office, Telephone Directory Holder for Office—Three Part Memorandum Pad Is in: craciheedehatn tae ake achaa ee % a Officer, American, in Paris to Assist Tour- ists in Obtaining War Information Officers, British Army, Firm Topcoats for “Demobilizes” Officers, British Naval Traveling by Sea, ay Se BR BO rer tar. Officers, Traffic, Electric Lights Worn as Warning by Oil, yinn buibesntion Limited by....... Oil, Auto Engine, Funnel Tube for Pouring Oil Bath, Nonrusting Butter Scales Oper- St CE cciaagerhokea set net eh ce ee 6a 200 ewe Oil Burner Improves “Air-Tight"” Stove Oil Burners, DE stcéieeane ks sO wee a CORE ee aha eee Oe © Oil Burners for Use in Kitchen Ranges.... Oil Burners Make Good in Chicago Schools Oil Burning Vessel Shifted to Coal in Few DEE se dht be eee0 o64450 0a On oKe SOE es eee Oil Me i Ship, Adjustable Valve on Is Fuel nese Boycott of Japanese i oees eke we Oil, Cooking, Grape Seeds Yield............ a omb Substitute Stills Troubled ces Oil Filter, EE i ata ane ahh old eee ee ae Oil from Government Land, Big Royalties TE GOD ccacdcrevescapessetevashede,eeeae Oil from Hair Prevents Rust on Razor Blade Oil Fuel and Preheated Air Make Furnace PUNO voc ccrebcrrpevegereesssese esses Oil Furnace, Portable, for Riveters......... Oil, onset. 10,000 Gallons Saved by Modern Oil, Machine. Aids in Filing Solder......... Oil Main, Concrete, Advocated from HAvre REE pc cKcncusrnerenbwentees anes d 2639 Oil Petcock Wrench for Small Cars......... Oil, Shales Will Supply When Wells Go Dry, by Ti 1, SE céancesh pases cenanetee es oil” Southwest's, New Pi e Line to Chicago Oil Stove, Diminutive, as Kerosene Tank ene eee rrr Oil Stove Kept in Bench Top............... a = Flaming, Rolls thccagh Kansas Is Oil Vessel, Measure and Offset ONE TPS a: ai ea A AR a RE ORR ERE Oil Well Casing as Air Tank................ Oil, Whale, Nickel and Hydrogen Turn into Tallow Ollcan, Funnel Spout for............020008- a Zinc or Aluminum Strip Substitute ee Old ‘an ‘and ‘New, Union of in Cairo, Picture ou + aed Bear tenieasasvsrs+tesesesesexesyes Olive Poisoning, Ripe, Botulinus Germ to 39 596 849 831 384 524 596 750 530 870 75 24 132 478 714 650 675 244 933 678 921 701 388 430 613 538 787 561 707 435 444 217 878 755 460 917 764 ON ER ae re eee 754 ol a Games, Marathon Course for Se- sen O’Neil, Lydia M. D.: Light House, The (Poem)...........-.6+. 365 Steam Shovel, The (Poem)............... 602 TeIeseens, TRO (CROGMP 2.0 occ scccssvccsces 959 Opal, Black, World's Biggest Gem Found. 282 Opera Glasses Enlarge PD csae senda 937 Opera, Radio Transmits ............s.5s065 117 Operation, Appendix, Surgeon Performs in 0 OS SR ree ere re 849 Optical Glass, Best Now Made in America.. 401 oe Increases Production of aaail CHOOCS HOSES SHEHSHESSESHEOHOS SEES ES EDE ESS dia Orehaeta.” Eastern, Dwarf Apple Trees PC ss. cece ethene Rate Saeki e we 556 Ordinance, New York City, may Make Fifth Avenue “One Way” Street............... 542

Page 40

40 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Or Improved Process for Changing to BE icc ed nner nene et beess sete hens ee ees Ore, Motive for Moving City, by Martin Codel Ore Pulverizing Machine, Los Angeles High School Students Build............--eeeeeee Ore, Unusual Ships Used to Transport...... Orient Wrests Rubber Trade from Brazil. Oriental, Eight Day Burial Periods Sur- WO WP nn onc senescence esc esascesdvececs Ornaments Drawn with Arc Show Control of re ee ee Orel oa "alaska, Quartermaster of Alaskan bower DED . cknveagecsereregernocces Outdoor Work, Cold Hands Avoided in..... Outgo, Income Tax Payers Report.......... Oven, — Crawls into, but cannot Crawl aes pe olin dha d a niebnd na i Storage Battery Tops Soft- ene Oven, Modern Coke, Efficiency of........... Overcoats, British Army Officers’, Firm De- SD owe mes cedseccacen searerseseveceees Overcoats, Tailored, for French Dogs....... Overshoes, Canvas, for Farmer..........++. Ownership, Private, Wireless Control Given | * a ee eer rrr er Oxen, Modern Farm Tools Drawn by in Philippines — By-Product, Scientists Forecast Uses fo eee ese eeeeeseseeteeeseeseeesesesese Oxygen, Home of John Priestiy, Discoverer of, to be Moved to College Campus....... Oyster, Live, Catches MouSe............++45 ‘ =e 2 and Fox Package Delivery, Hybrid Motor Vehicle for Pagnase Fastener Designed to Take Place of Hunters Cross Stream on | Tw Packer. Band and Wire Stretcher for....... Packing House, Concrete, Panama Canal PE. Ch stnetetsstchawekese es eneneenkeue Packing Industry—Knives with Reshaped WD na nd 60460040066.60600000086 ~~ Not Used in Water Faucet Made in Pad, Inner, of Rubber and Leather, Sideworn Heels Prevented Rr eer Pad, Three-Part Memerandun, New Office i cn cac coheed dereaccseensesonees Paddle Chain Water Motor............00+:. Pageant, Pilgrim for 1921, Plans Announced ail Forms Chimney Pipe H Pail, Paint Mends Leak in.............0000. Pail Used as Stovepipe Joiner.............. Paint Can, Paper Plate as Drip Pan........ Paint, Luminous, Attach to Fountain Pen ee ee ON BOE. oo co canccsevecaceoses Paint, Luminous, for Eye Testing Instru- Pt Rtn tean ene eéncie nee rebon dened eeae Paint Mends Leak in Pail...............05- = Odor of Lessened by Water in Dish- Ce ee er Paintbrush, Hook Holds Upright in Pail. Paintbrush Work, Ruler for................ Painting, Auto, Easily and Rapidly Done... Painting ~~ Bridge Takes Five Months.... Palotins. rame for Holding Rowboats Painting House by Lantern Light.......... Painting Outfit for Golf Balls Includes CE: 2 cnc cede eames ee 6 meee a Paintings, Oil, X-Ray Reveals Frauds in. Pace. | Crystal, Enormous Trade Fair to ‘be EL aie a6 ik nar ae a OS os Aaa ae ae Palace, Famous, California’s War Memorial \ "Sani gee ay See rer Palm House, Lincoln Park Conservatory, Has Rustic Water Wheel................ Pancake Turner, New Form of............. Panels, Screen, Fasteners Hold Securely.. Panes, Broken Window, How to Replace.. “Paper Brass” for Spark Plug Screw Repair Paper, “yr » on Subfloor Keeps Out Cold Paper Cap and Apron Used for Housework. Paper Caps, Protective, Show Great Resist- ance to Blows a re ee a ee Paper “Currency Distinctive Portraits to be sed for Various Denominations......... 501 492 598 613 278 Paper, Cutting Circular Disks from......... Paper Die Embosses Monograms........... Paper Die Embossing Process Patented. Paper Envelopes, Turned Out by Millions with Modern Machinery............e5ee0. Paper, Gummed, Signs Made from.......... Paper, Gummed, Useful in Machine Shop. Paper--Much Pulpwood in Alaska Awaits Pn Ger Ore eerie arse Paper, Old Wall, Spraying Removes........ Paper Plate as Drip Pan for Paint Can.... Paper—Pulpwood Loss in Storage Reaches Pe Pe ete teen eadarevetcaseeseanee Paper Roll Desk Tablet...........cccceccvecs Paper, Ruling with Comb..............+6+. Paper Shortage, Tree Stumps in Cut-Over SS OS errr Paper Testing Machine, Falling Pendulum on Reveals Tearing Strength of Paper... Paper, Tool Slits for Attaching Stamps or Ph: chick cnskveh kaa aaRaee Weel ss 60 ae tee Paper, Wall, How to Remove............... Paper, Waxed, Tacked on Bread Board..... Paper Weight, Steel Ball as................ Paper, Wet, Bits of and Hot Water Clean i nM. Cosh ca ec ake éhekne ees Papier-M&aché Cups for Spittoon Make Clean- sg — "SP ee ean Parachute, Airplane, Thousand Dollar Prize Serre Parachutist, Wind Carries to Death in River Paraffin Aids in Waterproofing Blueprints.. —— Repairs Leak in Hollow Metal | SRR ruse re eee Parasol Cane Latest Novelty............... Parasol, Nonsymmetrical, New Novelty..... Parcel Carrier, Bicycle, and Stand Combined Parcel Post, Baby Alligators Travel Through Parcel Post, International, Greatly Extended Parcel Post Scale, Keys Operate............ Park, American Auto at Coblenz, Flood Pi ivent sddcehwk ce seae~aehasee eee ee ee Park, Amusement, Adds to Joys of Canoeing nn napeemes Park, Amusement, Rough Riding Tank Used sel Park Benches Face Away from Paths...... Park, Canadian National, Village of acs * Pré to be Restored as.................+. Park, Chicago, Odd Bridge in, Torn Down. Park, Chicago, to Have Big Public Aquarium Park, Chicago’s Forest Preserve, Has Utili- tarian Er lid SIR diary teak’ Ger bel 0 wk was Park, Cincinnati, Winter Squirrel House 2° . 6 Sere Park, Drinking Fountain Made of Many gate Fae per ep yale Re cern Park Entrance Marked by Huge Bowlder... Park, Golden Gate, Aquarium to be Built in. Park, Golden Gate, Push Ball Contests En- joyed by Children in...............22005. Park, Grant, in Chicago, to Have Famous DE isla cdaboetsesaekee dearest bes Park, Hudson River, Has Signs to Prevent Picking of Wild Flowers................. Park, Indiana Dune, Engineers Study Plans to Preserve ee ee Ce Park Lamp-Post, SS =r err er rear ae Park, New York, Road Cleaned by PS 6 ov 644406006 SRN EEO O sao ee Park, Public, Has Boat Landings That Blend , 8 - rr ree Park, Yosemite, Elevator in will Hoist Visi- kk 2 ee eee Parking Spaces, Numbered, for Autos Parks and Public Grounds, New Lawn nc; nse nh Os dres dnd ee asen sees Parks, Public, in Madrid, Branches Passenger Pn LdiwenGbdseeatres odaceeee costae es Passenger Airships, Plan to Fly from New York to San Francisco in 36 Hours Passenger and Mail- Service, Aerial, Links Murman Coast to Finland................ Passenger Fleet, Motorboat, may Help Solve Cleveland's Traffic Problems Ciena . eer < ee erccccccccce ee ee Passenger Seaplane, Eight, for California REESE ep) ee Sear een Passenger Seat, Collapsible, for Rear of i heath iedeguaseatsoessetakeacs Passenger Vessels, British Commercial Trav- elers Use Warships as 482 461

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471 352 687 154 . 761 Ge te He we r- 544 584 78 482 461 368 21 334 737 894 912 98

| - eee ee

POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Passengers and Freight Carried by New - . B= ree ere 82 Passengers, Elevator, Electric Number . of _ Sap erereertt oes pinnae 703 Passengers on Vessels, Movable Platform on .. SS pre ereee 554 Pasteboard Hood, Focusing, for Camera. .. 477 Pastors, Phonographs in Pulpits as Substi- ink OS aa Wd 056 oh ce eee ae tee 65 Pastry Cook Makes Sugar Model of Mt. Wil- p De cick eead ene ee bbudddet+anbenueeas 35 Patches, Cementless Rubber, for Auto Tops. 1z3 Patchwork Reflector for Viewing Colors DED cxctoasdenxeawesdsearesesuedtena 627 Patent—Danger Emblem Made by National Se cca nan poe accuedbiated saws 867 Patents (Poem), by James A. Sanaker. .. 480 Pathfinder, Radio, Guides Ships and Planes. 8 Patient, Conscious, can Now Operate on PRP rR rr eee ae 500 Patients, Sanitarium, Flowerpots of Date- Palm Tree Fronds made by....... ..... 749 Patriot, Polish, Swiss Return Heart of to Warsaw Sens OCERRREAGIS eae . ke 755 “Patrol, Dover,” of British Navy, Activities pe cent elinpprepspic ung diry: 272 Patterns for Castings, Cut Too Thin, ‘How to Increase Thickness of................ 304 Patterns for Castings, Hints for Making.... 474 Patterns, Tailors’ Master, Heated “Tool DN. cbivmined dah ne wd Beeb aiaord- aah wae 108 Pavement, Avoidance of Ruts in Helps Main- yp” aa onpapimaptietalpapean tie ntis. sey ka se Ree eeanene 631 Pendulum, Falling, on Paper Testing Ma- chine Reveals Tearing Strength of Paper 236 Pendulum, River Motor like, Runs Irriga- i Pn: -Likecicenhtaceasebascae nance 826 Penitentiary, Ohio, Warden of Avoids Dis- SR ce pa ib bh'be e600 kee we a 208 Penknife Made from Cartridge............. 950 ~~ Storm and Falling Walls Mark te cheekWat amar he sane ede eae ee as 574 Perambulator, Pivoted Front Wheels Make BU, ED boca tcersecagoctaccsisccses 115 Percolator, Coffee, Has Two Containers..... 762 Performer, Oriental, Buried Alive for Eight Se ED atu cnenedeseee aces A045 4 ae 0x48 840 — Bottle, Nonspillable, for Shopping _ Periecope. Angle Measuring, French Used to BURORE DOTTY Wee on ccscisveoccdceeses 183 Pest, Cotton, Bronze Statue Honors......... 884 Pests, Birds, Fireworks Bombardment Rids OF” SP err rere eae ee ee 433 Petcock Extension Handles Made from Gas os Pics seek eee ete ee seneehes Petcock Wrench, Oil, for Small Cars........ 787 Petroleum and Chaik Used to Find Small Sn sc nbereesee nas he one seen 454 Pheasants, Chinese Ring Necked, New Jersey Uses to Fight Japanese Beetles........... 16 Phonograph Attachment Lights Turntable... 568 Phonograph, Automatic, Plays One Record SE DE «50.00 c20e6be Cd desgnnsnesere 201 Phonograph Changes Record and Runs Own I cn pd ebasentesh hee ers haerh ae 685 Phonograph, Electrically Run, Combined Se I, bn oc escogesgens «opeceigs« 275 Phonograph Music Sent in All Directions by . ia tapaanatgentny qa ary p esa yer 322 were Needle Cutter Made like Scis- eve Phonesraph Needles, Twenty-Four, Disk of er SPO, 6. kc sabe eres ceed ave ssee 751 Phonograph Gee WM iccdnencedesane a 793 Phonsatens _— Telephone Amplifier Pe SD Oe io hae 0699604900 06402 03 64ne 739 iY - ey Small Portable, Valise Is Cabi- ese Phonograph Stop, Extension Groove in Rec- ord tt anni dhninae Oe ae keto sawn ae a ore 407 Phonograph, Taking Care of Reproducer on 954 Phonographs as Substitutes for Pastors. 65 Phonographs on Ships Advertise Builders. 417 Phosphate, Island of, Ceded to Britain...... 179 Photograph, French Airman Takes, of i ee. sky ob cere abahite ces eobuee 885 Photograph Messages, Russ Spies Carry on SD bosses ccdkecedcsenencatecgene es 6006806 873 Photograph, ssa Taken during War, Ce Ti Es pcs os.05 0059 b50 00 bs 0 0060.00 6 537 Photograph or Stamp, Tool Slits Paper for BEE sn bhad axes ree chessdodcesnccesses 634 Photograph Prints, White Borders on....... 958 Photograph Symbolizes Union of Old and DN Cy Cn os o0.54ke 8 bas cab 080s 4904s 46 428 Photographer, Free Loan of Camera Is Ad- WOTCHONOME FOE occ cccnsccscveccecesececees 747 Photographer, Motor in Stool Base Helps to DE SEO 2.5.6 encebebh tense an wen eee os 599 Photographer Snaps Balloon Ignited by CA pccsvcheearknkonb ert dees +aghe se 259 Photographers, Navy Opens School to Train 174 Photographers, Simple Ruby Lamp for...... 955 Photographs Furnish Proof of. Mountain OO” EES rrr eT etl errr 104 Photographs, Small, Directions for Mounting “y i errr 47 Photographs Taken from Air Find Traces of i CN ace ehh Orb bee bee teens hs sredeve 80 Photographs, Taking of “Ghosts’”’........... 793 Photographs, Toning to Sepia.............. 946 Fusgeeeneay — Amer Spectacles as Ray 778 EE 6b 6 bb04 06s e Os od and ae eCResences cess Photography—Ammonia Bath Adds to Speed of Photographic Plates..........++.-+-++. 366 Photography—Camera Catches Alternating CEE Sob s cand heee sees dew Saeseounrs obese 785 Photography — Camera Discovers Ancient Ruins, by Frederic Kinney...........+..+- 502 pee repesy Enlarging, How to _ Photography—Cap for Enlarging Camera. Photography—Finishing Done at Lecture in PER Unik os cess nets vtesaseds sa'weve 798

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42 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Photography—Finishing, Makes PERE 506.606 60 000008606006 8nneeeeesed Photography—Focusing Hood tor Camera.. Photography—High Speed Airplanes Photo- chiens hbk bana e Ae Be eee Oe eee eiee Photography—Light Aids in Trimming EY “vend bones 6600.40 thaw A eed dee EO ROS ee Photography—Mounts Prevented from Curl- NE crak g Gal pk ACR ta de 6 We el ON ee Photography—New Motion Picture Printer See Fe ere ee Photography—Pencil as Mounting Roller... ee —oerennes Reflector tor Camera REE er re re ere Photography — Postcard Projector HOW 00 MORO. 2.2 ccsccccscsccccsscccccens Photography—Preserving Broken Negative. Photography—Print Washer tor Campers.. Photography—Prints Timed by Metronome. Photography — Pyro Developer, Negatives SU er eee rere Photography, Queer Background Effect in. Machine Photography—Roller Curtain for Drying NN: Shik a Bia eee aw dal wide 6 eink dee a © Ode ee eK Photography, Simple, Microscope Wonders Revealed Photography—Stoneware Developing Tanks kr ee er Photography—Timing Prints by Sound..... Photography—tTrap Catches Flashlight 8A ere ee ere eee Photography—tTripod Screw Held Fast Photography—Tubular Bath, Develop, and Wash Films Quickly with Photography, Vertical Enlarging Camera ee MO Me. bc aeivwencwee eee kee Photos, Easter Eggs Decorated with Physician, French, Invents Ys Ao: sig 6 Wl od 64’. 0.0 ake es Physician Invents Germ Proof Drinking NN it iS aie nae Ri aia sy Som a 06 6 6 de 0-0 ee, Se Physician Travels by Tractor.............. Physician, Worn-Out Forceps of Useful in EN iui 4k acd eek hea Metal b0-8 s de.a 6 4 ke Sakae Physicians, American Red Cross, Forbid Bathing in River JorGam. .....cccscecccce Physicians and Nurses, Thermometer for, Has Case with Unlosable Cap............ Physicians and Surgeons to Have World ES S96 ical Sa a ha dk Gavin ae eek a A ahd Physics—Water Wave Formation Shown with Simple Equipment................. Physiology of Electric Shock, War Brings re eee Pianist, Small, Animal Keyboard Chart for Piano Bench, Adjustable, Has Compartments 4. 5 aReien pe fps eee Piano, Music Kept on Back of Piano, Player, ek a a are le a thay saa Air Be eel ae cs Pickle Jar, Hanging Fork for.............. Picture Frame from Straw Hat Picture Frame Makes Tray...........ccecss Picture Screen and Lantern, Huge, Break I ioc a pt akin es 4 arid deh Picture Symbolizes Union of Old and New I NK crm dl ig i task can ea A ak eek a ocak : Armless Dutch Artist Paints with eet Fix, see eee Sanitary Glass Converted into Compressed 679 427 638 464 153 70 139 428 579 Pictures at Grade Crossings Warn Chinese 330 Pictures, British Captain Paints in Aeroplane oe. Painted, Show Smut Disease of ee Pr errr re ee ee Pictures, Russian Stores Use to Advertise DY +cek atau ee naan «Wh MASSE ae eR ee Pie, Annular Utensil Trims with Single DE Se ode en eansee vis bahae's e0—s Uh S aw RR Pier, Los Angeles, Motorcyclist Soars Eighty-Seven Feet from, for Moving INE sack ar iethi'e Bia aian.G kb Gow wb A eee dee Pike, National, Like Lincoln Highway, oo Ee SO err ae Pile Driver, Hand, How Improvised........ Piling, New Concrete Process Makes Many DS oF aed eae wkd eae ae eee eee ee Pin Aids in Card Finding Trick OE a SS =e ree Pincushion on the Sewing Machine......... “— om Valuable, Mined in New Zealand Swa Pine, White, Fungus Destructive to Spread we i Rr rere Pins, Dowel, Cutting FRO Pins, Dowel, Prevent Opening of Door by Removal of Hinges ee ee a 53 682 199 849 724 199 452 Pioneer, Heroic Statue of, Born of Chance DEE avttcenaekwis Ceenewe bandas evenanens Pioneers, Dakota, Name Mount for Theo- GOGO TASOGOTOLE 2c cccccvsdesvvcsscsecesves Pipe and Fittings Convert Bug into OME. tawenssesedenceceneess we cesccccceces Pipe and Strap Iron Make Gluing Press..... Pipe and Wall Tile, Asbestos and Cement ahaa eRe aOR OER Oe kwh S Pipe Bending Post for Small Shop......... Pipe, Big, Labor Saving Device Used to Move Pipe Connections on Kange bBoilers......... Pipe Fittings, Steam Separator of.......... Pipe, Gas, Makes Petcock Extension Handles Pipe Hole, Chimney, Pail Forms Pipe, Hole Drilled in, Pump Prevented from OU Bs ovo nav ncdos seve ddsreneenseces Pipe Line, Canadian-United States, Not EOS ere Te err re Pipe Line, Iron Kinks in Allow for Expan- SE ON To ok os ccwcccvascceseve Pipe Line, New, Southwest's Oil Carried to SP Mi ec cheexred sud owe enue goer eaee Pipe Line, Prehistoric, Found in American PL <7 peed eC RA RR OR eas ede keke nae Pipe of Stove, Pail Used as Joiner for...... Pipe Sprinkler for Bridge Eliminates Water- i CE n4u ces eh baths +hse SC RREES TONE O04 6 Pipe, Steam Supply, More Than Mile Long.. Pipe - ecigiane Adjustable, of Concrete and DE stb teceenwe ees HEN O Rew RKD Ke AD NOOO 4 Pipe System, Tunnel for, Box Girder on ee Een TOWN BO. cess accsceeeeeses Pipe Tees, Check Valves in Pipe, Tile, Standard for Garden Table...... Pipe, Tobacco, Compressed Air Cleans Pipe, Tobacco, Removal of Bit Made by Rubbing with Graphite Pipe, Tobacco, Stand for Attached to...... Pipe, Train, tor Air Brake Has Automatic ROE in occ cnc cd tectarercuvncscrciovses Pipe, Sra volina Plug Finds Leak in........ Pipe, Waste, Silencer for Noisy............ Pipes, Hot Water, Corrosion of, Prevented by Excluding Air eae ins lth lhc te a et Piping, Double Chains Raise from Well... Pirates, Last of New World, Motorboats Hunt, by H. H. Dunn. ik i Oa ol ae ele Pistol Grips, Hand Carved, “Mementos of WE MEIENS PERO. 0 cc cc iteescccesnecese Pistol Shots Stopped by Glass Twelve Feet P|) MUERTE ETCL EULER CTU ETL Tere Piston, Automobile, Maul Made from....... Pistem Pim, Golt HOMES OR. cscs ccccsccccs Piston Ring Diameter Found with Circum- ES RE MART Trees eee Piston Rings Compressed by Simple Tool.. ‘Piston Slap,’ Auto Manufacturer Eliminates Piston, Spring Guide Helps to Slip into TE, oss G6S4 VO CAN OOD DEAS ERED EON ER ODES Pistons Act as Valves in New Engine...... Pistons, Auto, of lron, Special Design Makes Dees wok SSN eee ee Oe Oa ae bn 6 ae om Pistons Handled Quickly in New Bench Vise Pistons, Lathe Attachment for Grinding or . eae eee er rr eee Pitchblende, Rich Deposits of, Found in SR cccenctessevekns ane eenee® rao= Believed near Neptune, Astronomers PEE 65 6.66 8d SRS NOKEY COON SHER OHO ROSS EOD Planetary Transmission of Small Auto, At- tachment for, Gives Many Speeds Planets, Many, COmsuMCtION . 2. cccccccccccccccccccecss woe Planets, Mars or Venus, may be Signaling Earth, by Paul H. Woodruff............. Planing Machine Slots, How to Clean..... Planks, Wooden, Concrete Replaces at Grade SS wa spe mShaS SPER CES REWHO TOKENS OUR Plant Growth, Length of Day Determines... Plant, Individual, Greenhouse for.......... Plant Lice, Tomato Foliage Effusion Kills.. Plant Roots, Perforation of, Augments es GEE, occ cccccesssescecrsceses Plant, Yucca, Bark from, Protects Fruit Tree | eS ee ry rrr er re reer Plantation, Coffee, Concrete Drying Floors in “Planting Board” Used to Replenish Cana- Py, i ces neat ewesdnnt «ab 6 Plants, Growth of Varied by Radio Electric Waves Line with Sun in Unusual Plants, Modern, Ancient Fossilized Sea- i rR A Ca wre bkdatanan hee ena ee Plants, Potted, Tree Trunk Makes Novel Stand for 429 a 2 ata

Page 43

ito rs At 1al ng de ncnseiitliirasiig el” inaias: samba To, er were oe POPULAR MECHANICS INDEX, VOLUME XXXIII, Plants, Row Marker for Transplanting..... PERG, Were. GROMORE GOP... ci vcccccscesecss Plate and Pair of Rollers, Auto Made to Sees Ome WEEs os ccscssescesceees = Plate Glass, Broken, Five Miles of, Paid for Be Pere r rr eres Plate on Stove Distributes Heat............ Plate, Paper, as Drip Pan for Paint Can. Plates and Funnels, Ship’s, Carried by Truck Platform, Concrete, for Haystack........... Platform, High Operating, for Midget Loco- DE: pins ake i ae ee ake aks ka ewe a Movable, on Wharf for Unloading PN chihds bbe eth WE BARA Ke Re eM ea eee e Platform, Special, for Empty Sacks........ Platforms and Bridges, Wharf’s Capacity In- creased by Platforms, Wooden, Rr ee re Platinum, Silvered Glass Utensils Replace. Platinum, Substitute, Cheap, for Screen Radioscopy Leer Se Per errr tT Tee re Platinum Supply, Discovery Bares New Cited tvs bn 050 bh Wed hae ee Platinum Wire, Fine, American Factory Makes Player Piano Converted i Ss bs ac ch conn banene Veees Gadae ea Playhouse, Smallest in the World, by Robert ak | MN te 3 or oi achat A hial 4 We ht oe Ge Who we det Pliers, Insulating, Clothespin as........... Plow Attachment for Light Cars, Sled Run- ners —n Cee ee eee eee eer ee eeeeseseeseseeeese * Suspend inset aehagcapy Aiea preiinyriary culate Plow with Huge Augers New Farm Imple- SED 0b bus Oho b.8 0.0 ake 6nd OO w ee ae eae ae Plowing, Fender Turns Under Weeds during Plows Drawn by Capstans on Steam En- Aa ere eS ere ee eee Plowshares, Rigging for Grinding.......... Plug, Grooved Porcelain Prevents Re eer rarer Plug, Handy Temporary Attachment Plug. Temporary, for Stay Hole in Boiler 552 620 293 609 920 230 609 267 285 602 PE Ee ey ee Re it eR ale 768 Plug, Traveling, Leak in Buried Pipe Found PT FPO eee Pr Pe re rae 122 mS Round Wooden, Tool Cuts Out...... 286 Plumbing Fixture — Drinking Fountain ree 207 Plunger Measures Road Wear to Fhoussndeh Pe I Sia. - wate dow wel bed ee'Ga durehs 377 Pockets, Canvas, Music, on Back of Piano... 938 rockets, Divided, on Auto Door for Carrying IIE od de & co ie kt a mie hoes te ea odie ele = os 674 Poem, ‘‘I Am the Farmer’s Friend”.......... 776 Poem, “Patents,” by James A. Sanaker...... 480 Poem, —— Lighthouse,” by Lydia M. D. 7 PS errr rrr is eran 365 Poem, “The Steam Shovel,” by Lydia M. D RS re er re nek eae 602 Poem, “The Telescope by Lydia M. D Nk inhlaat diate a i en abd ek GA atlas & 959 Poem, “Wireless,” by Josephine L. Peabody. 495 Poison Bran Mash for Grasshoppers....... 798 Poison Gas Used as Disinfectant during re Sn Pn. oo aneendubee ee 725 Poison Gas versus Poison Gas, by Allan A. I Si os a's sy Bh heh ca fc tor ow BA a cd he 693 Poisoning, Ripe Olive, Botulinus Germ to TID ioe ca At: atari a taco aidh igre Wier eva Ak Mele ooh ce 754 Pole, North, Expedition to, Fishing Schooner OM SR reer Re no ree 90 Pole, Swaying, Flag on, Rescued by Daring DP mithteveksss Wedd dee Meehan we oe BE 92 es Telephone, Miles of, Moved While in FE PE Ere pte re ee 902 Poles, Telephone, Tractor and Auger Com- bined A er rere 827 Police, New York Aerial, Ask Municipal Fly- ing DD tabs eedsesed ened eden he eae aee 64 Police, North West Mounted, Canada Se SP Ml oc ckesan si eantee an ekans 174 Police Reserve, N. Y., Wants Women Re- rar eae ee x Police Wagon, New Bolivian, Has Office for ET 44a cdi eas. Omen tt ited ea bea ae on 24 “Policeman,” Traffic, Twelve-Foot Figures of, in Chattanooga Streets.............+.. 587 “Policeman,” Silent, of Concrete and Iron, Warns British Columbia Motorists........ 271 Policemen, Traffic, Galvanized Iron Shelters for Kansas City Provided............... 909 rrr ree 629 1920 Polish, Silver, Cigar Ash Used as Polisher, Spoon Bait on Boat............... Pony Power Aeroplane for Children........ Pool, Fish, Concrete Used for on Lawn Pool, Soldiers Play with Croquet Set Pools, Mosquito Breeding, Doctor in Air- NE oa ics oats ins Beh a Oh Oe we abe whe Popcorn, Life Size Dummy Clothed in...... Popcorn, Nebraskans Serve at Fall Festival Popgun, Motorist Uses on “Road Hog”..... Porcelain, Grooved, Prevents Short Circuits PC Ghitshesh bd ai eeie ata a edie ee ee a0 +e Porch Railing, Shelves Built in............ Porch Swing, Ball Bearing................. Porch Swing, Magazine Rack in............ — on Dog Home Serve as Exercising ens DY Mehtatedekous ldsatcne'ccake ase esos Port, Providence, R. I., Looms important as Port, Western, Valuable Rubber Cargo Se Oe, civnwksidhied 2040 knew dee ihe s awe Portraits, Distinctive, to be Used for Vari- ous Denominations of Paper Money Post, Handsome Concrete, Rural Mail Box i Sec ie sk cade ae eee bees Wee) Kia Post, Pipe Bending for Smal! Shop Post, Revolving for Fence, i Pe bes ete hc CoRR as NEA aO Oe we Oe et Postage Computing Scale, Keys Operate.... Postage Stamp Collection, Greatest, French “c er ern Petre Postage Stamps, New, German Government DE cca eenetacetwnerceedeeheesebuenees Postage Stamps, New Series of Polish Re- Pe CE ch sss wane ssheee Ow h ene eee Se 8 Postage, Ukraine Has Triangular Stamps for Postal Employes, Newark, Coéperative Gro- cery Store Maintained by................. Acts as Tighten- Postcard Projector Views, How to Make.... Postcards Used to Mend Auto Tires........ Posts, Fence, Boiler Tubes Make............ Posts, Mouse-Proof, Granary Supported by. Pot, Bench Type Electric, for Melting Bear- ing DE Sttcirdotsn cbheateGeads actin een Pot, Brass, and Syringe Holds Kerosene for EE EE no os eekeenbeeee nest ee nee wa Pot Cover, Nonheating Knob, Old Fuse Plug Pe Ce. ccc nde ena es de kie keh eee © hae eS Potassium Salts, Chinese Salt Wells Have nS Me cinvcce bene adn teen sine we 3% Potato Bugs, New Machine Exterminates... Potato Digging, High Speed................ Potato for way | Ge Potatoes, Farmer Uses Tongs to Pick Up Potatoes Sprayed by Auto Engine Exhaust. Potatoes, Sweet, Parasitic Fungi Destroy 80 er Cee OE CED GE. oo ccs cc svicse2esseses Pots and Pans, ustless Steel to be Em- DER DOE TS, occ ec ceasesseeeceresse Pouches, Asbestos Linea. for Mail Planes. Peemiey COORG Se Tee cesccciccscccarvesss Poultry, European, World War Decimated. Poultry Feed, Wire Mesh Prevents Wast- OS ea re rrr rrr ts eee Poultry Feeding Trough, Sanitary......... Poultry Silo Made from Barrel............. Power and Improved Navigation, Damming of St. Lawrence to Supply. .....sccccccces Power, Column of Water Transmits by Im- pulses like Electric Wire does Power, Government Nitrate Plant, Masonry Dam to Furnish with............ Power Hacksaw, Support for Stock being CE caivek as euchend saved ab 06a. bees cer Power Hoist, Mine, Motorcycle Engine Used for Power, Motive, Spring Water Furnishes.... Power of Purpose, The, by H. H. Windsor... Power Plant, Enormous New Built by Ger- SE Sect t cha inane a baeiete sees anes kee Power Plant in Detachable Stern Serves PE 6 ecm kine eee Gade eee we Power Plant, Monster Hydroelectric, Argen- tina Plans Pyver Plant, Removable, New Motor Truck ee ee ee eae h ah eke hk eee ea Bako Power Schooner “Casco” Wrecked in Arctic Power Tool, New, Is Versatile.............. Power Units, Aeroplane, Made Quickly In- ES cc cenccees SACKS R Sane n Re ees Power, Use Natural Fall of River without fad. an ee Mtamt saw ee eames he Preacher, Aeroplane Carries to CR ccvienshesecanesderedeeenenes hs — ~e High, Lower Motorboat into Lake rom ee 573 678

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44 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Precision Balance, Small, Used for Finest SL acca wh ee Reid ke Oe Se Prepayment on Canadian Shipments, Express Companies and Railroads Ask............ Preservation of Raw Fruits and Vegetables, ee Re Pere rer eee eee Preservers, Life, Liquor Smuggling Devices Pe ‘ede pee ebekeker tas akates essa ee dat wade « Press, Bushing and Gear, Old Press Parts DT. Gin tadne whe ads tb we skbathae anaes ae Press, Combination, Prints, Addresses and Signs Letters Press, Dried Fruit, Cam Instead of Svrew I Gd ae of orn Coe eek 0b Wak 0 ae Press, Drill, Bench Vise and Hand Drill Form Prem, Drill, CHBCK TWOOE OR. .ccccccicccsces Press for Garage from Old Parts........... Press, Gluing, Made of Strap Iron and Pipe. Press, Printing, Repairing Cam of Press, Sign Printing without Pressure, High, Synthetic Ammonia to be 2 {Aer are aera ar Pressure, Low Exhaust Makes Airplane En- gine Silent Pressures, Enormous, a ees rar ie Price Signs Made from Gummed Paper..... Primer, Electric, for Autos Vaporizes Gas- NS 5h i da saa eae oda ac Ah eA nL de Ei ew be Print Trimmer as Mail Opener Print Washer, Campers Scientists Study Prac- Printer for Motion Pictures, New, can be ULE Oe ae errrr e eaee — Brass Rules for in Interlocking EMPRESAS EY I ey en ae Printing——Linoty pe Matrix Grip, New, Fonts Changed Quickly by Printing Machine, 4 eee rr ree ?rinting of Signs, No Press Needed for.... Printing Press Cam, Renairing of Prints, Light Aids in Trimming Prints, Photo, White Borders on............ Prints, Photographic, Metronome Times Prints, Roller Curtain for Drying........... Prison Story—The Desperate Gamble, by AD PPP ere reer re ab someon Steam Whistle to Warn of Escape ° Landes Marks Put on Prisoners, Women, Jail Corridor Is Class- Di st caadedeeceee dads ene hee ebés Prize, Airman may Win for Nine Thousand I oli le ais wal bh lead ks a vas dha dev Prize Contests Open to American Fliers.... Prize, Fifty Dollar, for New College Song... Prize, French Aero Club Offers for Landing and Rising Device for Planes Prize, Huge, Airman who Accomplishcs NS. WE SIUOTOE ccc ck cecnsecctenres Prize, Thousand Dollar, for Best Airplane is wince. oon a bce 60 © Ma ee as ad ae 0% Prizes Awarded for Essays on Economics... Prizes, Big, Auto Racers to Get............ Prizes, Big, Ideas for Making Aeroplanes Se DEVS SOMOO BE cc cecccsncccasucase Prizes, Cash, Young Republicans mav Win.. Prizes, Winners of Army Air Race Get Probe, Microphone, and X-Ray Used To- SR ee ere Produce More or Consume Less, by H. H. PSR er Rane Production Costs, Job Timing Machine Cards Production and Sales, Factory ‘‘Barometer” EE ib ada a se Cha eae 6 ad Ae Oe oe we Products, California to Have Permanent Ex- EE ESP ere eer eT reer Prohibition—Beer, Intercepted at Zion City, Poured into Sewer Prohibition, Dodging along Mexican Border, ; a a rs Ce og ie we chedoeeeen Prohibition—Oriental Liquor Plant Captured i Ce op. sci bet ene wah aewet edwane a Prohibition—Pipe Line, Canada-U. S., Not I ites ae ae iain wali Airaid asad bee a @ Prohibition—Sheriffs of Washington State Go to School to Learn to Detect Alcohol... Projection Lantern, Vertical, Water Wave i nM sca ccd eens. cadens ue Projection Systems, Two, Used for New ics a gene S&S 0 dw eae’ Projection, Triple, Movies in Colors of Na- oe eae Projector Views, Postcard, How to Make... Propeller, Aerial, Amphibious Speedster SO i050 beaters oS bape see D0 ea oe ew bak 799 480 959 Propeller, Aerial, Defies Current Practice... 544 Propeller, Aeroplane on Auto, Wind for De: POO UE vcctcccnecssmace owsree 906 Propeller, Aeroplane, Sliding Mounting Measures Thrust in FHGAt.......sccccves 567 Propeller, Air, Study, Design of Windmills PE CS ia Pe hae RR Ee ee eR eek se 80 Propeller, Broken, Ship with, Kept Out of Drydock by Special Cofferdam........... 842 Propeller Efficiency, “Shroud” to Increase... 409 Propeller, Hand Driven for Small Boats.... 595 Propeller, Reversible for Aeroplane, Govern- |) OE rer ee rere 27 Propeller Shaft, Aeroplane, Simple Starter 3 err 53 Propeller Shaft, Ships, May Turn on Ball 0 BA rr eee 666 Protractor and Level Made for Use with Drill 336 Prune, Stoneless, with Edible Seed......... 713 Public, General, Several Companies Offer "EEGtG UP TROUTEMOS 00........cscercsevens 78 Public Library, Chicago's, Post-War Jump in I ae ee a 429 Public Library, Los Angeles, Employs Un- EE SS. oe agrees ak ke eke so OSTEO 436 Public Spectacle, Vote Counting Made..... 746 Puller, Buggy Tire, Homemade............ 616 Pulley, Melted Sulphur Repairs............ 776 ee. (UP I gas e's Se ae @ Ome Win a wo 925 Pulley, Rails, and Scraper Displace Crew of a ee re rr err re 87 Pulp Consuming Industry—Can: idian Uses “Planting Board” to Replenish Cut-Over ee re err rare 56 Pulpwood, Loss of in Storage Reaches High I he a rtornsaska br iste eae a oa tea ae @ ae ea 846 Pulpwood, Much in Alaska Awaits Facilities 904 Pump, Adjustable Sand, Has Interchange- OE . ra errr ere 494 Pump Coupling, Valve Cap Forms.......... 794 Pump for Cleaning Out Holes Drilled in eee ee arr eee 288 Pump, Hand, Installing Strainer in........ 937 Pump Holds Water by Capillary, Attraction 243 Pump, Hole Drilled in Pipe Prevents Freez- NI iia ie hah aides in rp and a a et 932 Pump, Motor Driven, in Jardiniére Runs EMR ee ee 914 Pump, Planetary Gear Arrangement on = Re eae aa 273 Pump, Portable Force, Steamship Oil Tanks PP Petri vcireaec ns cha nee Aw Ohh as sea es 878 Pump Screen, Old Bed Spring Makes...... 792 Pump, Simple Rotary, Reduces Friction to IE ik oie dk 1 lead hdin lcd Aenea do a€ 0° oes 0 737 Pump, Spray, Using for Liquid Fire......... 948 Pump, Steam Jet, Simple Directions for DT cerchtsntsnbavknnknnes bieeecnes eee 141 Pump, Tank, Auto Operates............... 606 Pump, Tire, Auto Wheel Operates.......... 933 Pump, Valveless, Tank Attachment Keeps 6A ere ee 856 Pumping Station, Artistic, in Western City. 257 Pumps, Irrigation, River Motor like Pendu- 3 9h reer 826 Punch, Center, How to Hold Erect........ 764 Purse or Notebook, Wire Guard for........ 915 Push Ball Contests, Children in Golden eer er ree 761 Push Button Repair, Emergency, with Cork. 473 Push Buttons, Electric, French Deputies to ey i a rrr 729 Push Valve on Top of Mucilage Bottle.... 535 Putty, Plour as Substitute for.......csce. 635 Puzzle Box, Hidden Steel Balls Lock...... 794 Pyramid of Ice, Illuminated, Built for Car- Es Rika en dihaiae dia wate esa dete bo Gad 6 660 516 Pyramid, Third Mexican, Found in “City of f 2a eee agree ar 598 Pyro Developer, Intensify Photo Negatives Pe hare eee rer eee 666 Pyrometer, Radiation, Lamp Reflector Made SN OR ras ig ich Say A CAKE R OeS ok oe ee 779 Quicksands Hamper Building of Bridge..... 88 Raccoons, Motorcyclists Get with Old Tennis _ Pn Ah. Se hae eee ahs te ae eee Ree ee can oe Race, Air, Replica of Alcock’s Biplane Wins a es 6s 6 e8 ke see hed se ae 6 196 Race, Army Air, Winners of Get Prizes..... 480 Race Horses, Famous, Monument Built over De tC hin tebe heehee eanehes wa ke awa 263 Race, Olympic Marathon, Course for Selected tee PRA Soh tf bee

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f nh to or ps u- res de nis ins ver for 544 906 567 180 342 595 56 846 904 494 794 288 243 932 914 273 878 792 737 948 141 933 856 257 826 915 761 473 729 535 794 516 666 779 88 543 196 480 263 " — TY eee a) i meen ii POPULAR MECHANICS INDEX, VOLUME XXNIII, Racers, Auto, Big Prizes for.........scc20s. Races, Aerial, Plan Two during Year...... Races, Sleigh, German Sportsmen Patronize. Rack and Lock for Garden Tools......... Rack, Baggage, over Car Hood Rack, Clothing, Foldable for Traveling... Rack, Drying, for Show Card......ssecvece Beet Tee TCSII TGs oc ccs Ki veers Rack for Garage Air Hose, Crankshaft I ak ii oO acu bh CE a oa ww eee Be eee oe eee Bee Ga TOG. os cc0seracewessacene Rack, Magazine, in Porch Swing........... Rack, Music, Makes Target Shooting Rest. Rack, Necktie, Clothes Hanger as.......... tacks, Movable, of Electrical Units, Sim- SEE CERO BMOCPUCEIOMs 05 05 cv cece ennseee Racks, Tool, Swinging, Space Economized De ecb edges der wvases Wed nsdeenakebaneaen’ Radiation | Pyrometer, Lamp Reflector Made se o RPP rr eee re re ee eee eee Radiator, Auto, Kerosene Heater Prevents a PTT Cree eee ere ee eee tadiator, Auto, Saving Alcohol from...... Radiator Heater for Garage.......ccsccsece — in Flywheel, Stationary Engine Pre Pee Cot ree ee ree Radiator, Lever Controlled Valve for...... Radiator Shield, Automobile, Regulated by SE (Vda hace ose Oks Ow * Chee Ee bee So Radiator, Steam, Concrete Work Kept from NE WN o's one aa ate ae awe ee a Oe Radiator, Steam, Valve Dome to Stop Hiss- eer rrr ee peer e tee rrr eee Radiator Toy Climbs Rod as Auto Runs... Radiators, Auto, Tap Street Circuit to Keep Warm Radio, Amateur in Receives Instructions by. Radio “Beacons” May Replace Lighthouses. tadio, Congressmen Wear Headsets and Get | ree ree eee rr ere — Electric Waves Vary Growth of Plant MD 26 bb60 6606060506065 8084646008 60 80b4 008 8-0 Radio Equipment, Many Improvements in. Radio, Instructor in School of Gives Concert >v Radio Messages, Mars May be Sending to Earth, by Paul H. Woodruff............. Radio — Portable, on Giant Motor ruc Radio Pathfinder Guides Ships and Planes. Radio Receiving Cabinet, Practical, How to SE ee oe rie ey are Radio Sending Station, Large New, Japan PD «cin ce wav des dnd bb atkadecannke ewe es Radio Station, Largest in World, United States Builds at Bordeaux............... Radio, Submarines Tracked by, W. Beach — Telegraph, Aerial Connector Block OPPS rer re ere ee eee Radio, Telephone Transocean, Plans Shown FOF 0 OD Ere err ee eee Radio Telephones, Adapter for Cords of.... Radio Telephones, Big Electric Light Sys- ee ED Ais 2 oan we kena ke ee eae wee aw he 68 Radio Telephony, Multiplex, Guided by Sin- i SSE er rE ee ee eae Ende. Troubles, Wire Loop on Submarine =n , Wave Lengths of 800 Meters Needed by Vessels to Call United States Stations Radioactive Substances, Containers for..... Radioscopy, New Screen for Uses Cheap Platinum Substitute Radium Bearing Pitchblende, Rich, Found et SD, GRR Koes crcnsatiueavaseebse Radium Emanation, Collecting and Purify- ing for Use as Substitute for Radium... Radium Drink Sanitarium Be- Psa rene 66se cakeaeesn cus BAe o eae bees Radium, Influence on Cataract being Studied Rafts Used to Convey Fox Hunters and Pe SS ad oan cii eek sae en eee ae Rag Rugs Made at Low Cost........sseeees Raider, German, over Paris, Shown in Night Photograph Rail Auto Turntable Hospital, Handles Handcars and Carries Rail, Broken, Wrecks Gasoline Car........ Rail, Coat Hanger, Made from Broomstick. Rail, Ferry Guard, Compressed Air Operates Rail Joint Welder, Portable, Uses Trolley GE da dvksue sea eéb Sale name deen Moree 799 582 3 30 1920 Rail, Steel, Small Anvil Made from. Railroad Accident, Freight Car Overturns RY Mv adc ekee Cbs de edb eka e nee ew hee abu Railroad and Power Companies, South American, Burns Indian Corn..... Railroad Automobiles Novel in Design.... Railroad Bridge, Ponderous, Moved Eightee n ee ee rea are eee Railroad Cars, Bearing Coolers for Railroad Cars, Swedish, New Developed for Ball Bearings Railroad, Chinese, Coolie Labor Saves from Erosion, by Heavy Rains............ tailroad Coach, Falling, Ice on Lake C ham- plain Catches adtue see ese heat bw een e Railroad Company, Huge Coal Car Dumper Pe veka dved esse Rade aW bee wap até Railroad Crossing, Electric Danger Signal for Railroad Crossings, California Interurban, Simple Signs like Electrical Devices...... Railroad Crossings, Chinese, Pictures at le tC” errr Railroad Crossings, Concrete eplaces ER Er a arr em eee Railroad Crossings, Warning Signs Replace ED 6 ve eslg ai ahr ae ae Dake Ke we 2 Railroad Engine, Electric, Proves Stronger . "Te RRSRSR ES a eee Railroad, Exploding Locomotive's’ Boiler Pe Dn SE ssc veneceae eke deen e bane Railroad Express Refrigerator Car, Model of Shows Detailed Construction.......... Railroad Foot Bridge, Three Level, Has Two Stairways Railroad Freight Car Saving, Huge, One Se SE i RP BOD s 06s cttw iccwannses Railroad Grade Indicator Attached to Win- PRS PO re Mr ry ee ee ee Railroad Gun Mounts, Navy Transfers to BE. 6s ce cne eee Raed TO RSS OERO DAKE DESDS OR tailroad Link, Mesopotamian, from Bag- dad to Busrah Railroad Link, Short, from San Diego to Yuma, Opens New Transcontinental Route Railroad Locomotive, Combination Has Gas SO. TN as od to atid dwensdssannes Railroad Locomotive Explosion, Cab Blown BE OE: civsnod a redeee bee e blends one twee 45 Railroad Locomotive, Instrument Records DE Pn ias cbasaeneSeneean kaa eee a Railroad Locomotive Moved by Truck and ct Od ee eee Re eR CRS eK ee een tailroad, Low Semaphores Used by........ Railroad Mount for Coast Defense Gun Adee bd abe Oke Rew ee Re ee 6 reek OS Railroad, Name of, on Viaduct Assists DET csceusctueeeedebe ieee Ueiee se ames Railroad, Narrow Gauge, Automobile Be- OO BD Be 6.5 6 dks snows ecennes Railroad, Pan-American, Bolivia Plans An- es ect ae et een htne awk eae we Railroad, Portable Fire Fighting Tools for. Railroad Scales, Double Track Protects..... Railroad Semaphore Arm, New Auto Warn- ing Signal Resembles Railroad Semaphore, Tall, Visible over Tops Re eer eee Railroad Signal Lamps, German, Wicks Soaked in Potash Solution to Prevent PL nic ce tsakdeb orks cee e heen we sae Railroad, South African, Locomotive and ao Cee CO. «sc sas deve teosicnecons Railroad, Spring Gate Closes Crossing of. Railroad Switch, Emergency, Main Line Left Intact by Railroad Switch, Engines, Trucks Act as Pe De sbccandss arcana ohs orate sien Railroad Terminals, New Method of Trans- ferringg Freight AlGe .....ccccccscsscseee Railroad Track Grinding Machine, Electric, TS .. Be Ree ee eee eee Railroad Trains, Five Engines Move across NS - a davies cesssewveauagseaneteses Railroad Uses Concrete I-Beams for Retain- | PRR ro eee Railroad Uses Concrete Telephone Booths. Railroading, Students of Get Scholarships... Railroads and Express Companies Ask Pre- payment on Canadian Shipments ......... Railroads, French in Africa Plan on ares Pe pc ecepebhbese hekeraseteeshawnens Nailroads in Chile, Electrification of..... Railroads, Island of Mauritius to Electrify. Railroads, Narrow Gauge, Government to Construct from War Salvage 870 210 57 939 657 837 742 421 695

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46 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Railroads Use Steel Cages to Imprison I ca ait Whit he Gin we 6m hig a emake} Rails, Old Track, Cofferdam Built with..... Rails, Pulley and Scraper Displace Crew of Shovelers Rain Gauge, Biggest, Wettest Region in I esc aru mae os icaue diana mee he ace fn Rain Shields, Folding, Seats on Bus Top I ihc e esa aed TRIE aig as Ate es A Wien ne ae, Rainstorms, Torrential, Chinese Coolie La- bor Saves Railroad from Erosion by..... Rake, Hay, and Stacker Combined in New are Ranchmen, Isolated, Run Own Salt Vats.... Range Boilers, Pipe Connections on........ Range Finder, Navigation Made Safer by.. Range, Kitchen Coal, Oil Burners for Use in Range, Queer, Small Arm Ballistics Tested by Range, Rifle, Accident Proof. Rangers, Forest. Hollow Logs Serve as ee ee GD og o.o.0' 0006 mantsesecesaees Ranges, Electric Knockdown, United States CR dc cece ine eke eh ote on ee ee ee EB aaa eee eee — Mouse-Proof Posts Keep Out of Gran- Rats. Scared Away by Chloride of Lime..... Rattlesnake, Interesting Facts Revealed by oF 2a Rs er rer Rawhide and Tanned Leather Make New Ma- Eg ccc ce ee hehe sb draerversescces Ray Filter, Camera, Amber Spectacles as... Ray Telegraph Has Interesting Equipment. Rays of Light, Invisible, Used during War for Signaling Razor Blade for Cleaning Glass............ Razor Blade, Oil from Hair Prevents Rust on Razor, Little Safety, Held by Thumb and Forefinger Eee Se ee ee Reading Lamp and Chandelier Combined, New lec EN i 6 nabs adh eae ae Reading Stand, Adjustable to All Positions Real Estate, Handbills from Aeroplane Help Sell Real Estate Man Uses Aeroplane to Carry Customer to Farm Reamer, Gumming Saws with............... Reamer, Polishing, Slotted Nail Used as. Reamer, Rotating Disk ..............00000e Reamers, Bushing, Improvised Receiver, Double, Desk Telephone Set Has.. Receiver, Wireless Telegraph, Upsets Old - SRE entre ene reper Receivers, Motor Controlled Wireless, Take All Wave Lengths Reclamation of Ancient City of Indo-China, French Undertake, by Francis Dickie.... Reclamation Service, Crane Signal Code tt cine oe +0xs een Geese dw eee bao oo Reconstruction Classes in Belgium, Lace Pe ne OR ..cxcetsdesdgerpdases ee oo ep Exposition at Lille in Inter- est o a Reconstruction, Problems of, Studied in 6 nso st Cheenti se eaan eee Record, Engineer’s Personal, on Blueprint aie t hn ob 6” eine OR Oe OO Oda eae Record, Phonograph, Extension Groove in Pe. -ehectsoncketeimedadesh owe dee Recorder, Time, Operated by Door Locks... ——— Accident, Roadside Warning Signs idk oo ane a & Eb ak bk eA Se ewe a ele Records, Hospital, Gila Monster Bite Fatal wien 6 dhe bid ade eb ne hae maek haa as Records, Paoncaraph, Amplifier Aids Tele- Se Fe SR aeons ey he Records, Score of New Set by EEN aAaS ee Recreation, Curious Aids to in Factory Yard Resraste, Army Motor Truck Used as Station DP Ue tead seh une ane bebe bee dkand ben omen Recruits for Air School, N. Y. Police Reserve I SD TOP og ccccrvowectvantoncce Rectifier, Electrolytic, for, charging Storage he Dinca ee. b 6 she'd aa aia hk 3408 Red Cross Battles Disease in Siberia Red oe hppgpeus seeeee Burn Oil Taken from ee a man Reel, Fishin 5 OO BDOMMMONEE oc cccccvevecees Reel, Portab e Self- Winding, for Electrical nit cas wd ade ead e eg aee hs + eee bo 0's ¥ Reflector and Protector for Lamp, Tin Fun- a iis iow nt Akod @ SE ain eI oka e Ss eS Lamp, Radiation Pyrometer Makes se of Reflector, Patchwork, on Light for View- Pt SE os nwe eh esmeds cbeedhes caneaen es Reflector, Portable, for Camera Work...... Reflectors, Movable, on Novel Lamp Shades. Reforestation, Rodents Classed as Vermin _ Ee a ery Refreshment Tray, Attachable, for Automo- REE «6 ona cee uakebn eee eae ome Refrigerator, Auto Camping, Doll’s Trunk DE casdetestedeeea saaderdedeetecen ana Refrigerator Car, Model of Shows Detailed RL. vrdesakearnacsesbanssncubna eas Refrigerator, Small, for Running Board of BE 5.654% Ch ADOKOROMVA NODE SLOD RE RESER TODS Registration, Oregon Demands of All Prac- CE os cab ice ha aece es ie és Rehearsals Held in Unfinished Theater..... Reindeer Meat, Four Cold Storage Plants to Care for Increased Shipments of......... Reindeer Team and Sledge Used for Sum- III soins dices 6 Gece wt av are eae oe Og A Rejuvenation of Independence Hall, The, by ce AR. eee ayer ae Relic, Florida Sugar Mill, Nears Hundred Pee Relic, Indian, Uncovered in Mesa Verde Na- . &k ey are Relic, Stonehenge, Guarded against Further I i iil didnt ein ane a Be ai ew We hele a Relics of Dead in Odd Grave Markers..... Relics—Prehistoric Pipe Line Found in American Wilderness .............-e.ee008 Relics, Puzzling, Wreck of Ancient Galleon po | ER a eae tae Relics, Significant, Third Mexican Pyramid «rere ee en Repair Cradles, Collapsible Auto, for Chauf- St, Acteae etchant hah saa ke aawe shee tase Reptile, Flying, EE I 0 tie in a oe aioe etine Wk ko Slee ae Reptile, Gila Monster, Bite of Fatal Hos- _. & UE eer eee Reproducer, Phonograph, Taking Care of. Republic, Polish, Issues New Stamp Series. Republics, Fifty Factories Governed like.. ay Ate Croton, Overflows Dam for First DD 26 sdeneetti setae wehbe wake deeb wk a Reservoir, Huge, Furnishes Electric Power in Tasmania, by Paul H. Woodruff....... Reservoir, Immense Irrigation, Brazil Build- Nk ania wale Ans eae Die Ray he Kako wae 3 Reservoir, Irrigation, Australia Planning.. Reservoir, Underground Water Aids Growth of Trees ....... Residence, DY ata acdenenhs¢iadnonaddeaed concduat Residence, Frame, Concrete Front Beautifies Residence Lawn, Cave under Is Garage.. Residences, Kitchen Ventilating Device for. Resin, Pine, Mined in New Zealand Swamps Restaurant, Machine Cuts and Serves But- gt RS rr Ser rr ee eer Restaurant Water Cooler, Float Valve for. ne Quick Service, Electric Broiler iD asthe « tables KOR aka Obs ee nedne wanes Reward, Navy Offers for Improvement Ideas es Frame, Brick Building Pedestal ~ — e Typewriter, Light Machine Oil ASAE Se err rer eee ree soo "Pypowriter, Office Accessory for n Rice Fields, Wild Ducks Routed from, by Aeroplanes Lies kinet<ewshehasens weobaes ae Rice Liquor Plant, Oriental, PT ME. cinkkdawhdcubnn tea Bh wa'e ee +60 Rides, Free, to Popularize Automobiles.... Rifle, New Sporting, Resembles Army Gun. Rifle Range, Queer, Small Arm Ballistics PE stnivcxekhawmeWw eases Kone hae od 4% Rifle Range, Simple, Is Accident Proof..... as _— to Shoot Down Section of Broken DL wtuudiet «ahs & 6.09 0606000650606:6000808 Rifles, Magnetism Detects Flaws in Steel for Rifles, Target, Shooting Rest for......... Rig, Simple, Permits Steamer to Load Un- i) SP 6 bc cenececnsesewvsse toe Rim, Auto Tire Repaired on............... Rim, Demountable, One Nut Holds in Place. Ring for Boxing Practice.................. Ring on Arm Keeps Electric Iron Cord SE SE a cd cacnceredecceeessege po ee Ee eS ae Rings, Annual Growth, Timber Graded by. Rink, Ice Skating, Flood Lights Ly Riot, Near, Altered American Flag Causes. 597 20 500 358 218 114 605 653 286 404

Senate aeeanalias ae ee 0s manasa ine m a, TV RR rr

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Rippler, Flax, Does Work without Damag- i EE vc ncrsaceteebddd~e keep eases ee oe Ripsaw Filing, Irregular...........+-2+++++ River, Charles, Is Canoe Course for Thou- DE Cees cheeks wah ease Cah eee es Ohad ee wks River, Detroit, “Sr re er rer River—Dragline Excavator Crosses Rio Grande under Own Power River Flood, Savannah, a" er Ae rey yee River, Free for All Football in, Town Plays River, Freezing, First Aid to, by J. Cecil DE ce Vecktdn cen eads eee dees ON eRe eae eeeee River, Iguassu, Falls of Argentina to Utilize in Building Monster Power Plant Augusta's River, Jordan, Bathing Forbidden in by PRUE waar ccc snsceeesddavavigemcses River Motor like Pendulum, Irrigation POS TRUM Wie cc cccccevcscvessceesgasens River of Fire, iouns Loa’s, Illumines Whole ON FOR re eee ee Rouge, Dredging of Gives Detroit DRE ncn aes cede eccna eee chee euewaae a. Route, Thirty Mile, Used for Rural OO” Pree rrr ee re ee River, St. Lawrence, Power and Navigation nee BS Pe eee ere ee River, Savannah, Blocking One Channel to BECO US BOERS 2c ccscccccvesserveaseres River Scheldt in Belgium to Have Three PE TES occ sesaccvcctsoesaacenoneaceeus River, Snake, New Suspension Bridge Spans Oe re rer eter River, South American, Shallow Draft Motor- WOE OO TOD 6 nics cccapoesesvoveves River, oon Natural Fall of for Power with- OE BE based deh ened cds eedebseedseeenrse Rivers, Mississippi and Rio Grande may be Se: We CN da 0's o0:06,060 4000040 08a Na O8 Rivers, Upper Orinoco and Negro in South Amerion Deine BWEploreG...ssisccccccvces Riveters, ane Contained Oil Furnace for, Is IE, ik cs iret lata ACh eats ot aete ee Ae Rivets, Electric Portable Transformer Heats ST ee ee er ere eee Rivets in Steel Truss, Electric Welding 2y goth naman CRAee meow ede dh d on Rivets, Tight, in Blind Holes............... Road—Bright Angel Trail to be Bought by PE cnedncs6ote ranean tuned tnteet es Road, Concrete, Canvas Held over with Sr ere eee eee Road, Concrete, Job Handled on Big Scale, ee ER | eer rrrrrrr rire Road, Desert, Trees along, Watered by “Lit- ee rer ree Road, Dirt on One Side, Paved on Other... Road Glare, Auto Lamp in Fenders Obviates Road, Hard, Sand Dunes Rolled into....... “Road ~, * Popgun Used on by Motorist... - > in ew York Park, Compressed Air ea re are Road Making, Old Bricks Pulverized for. Road, National, like Lincoln Highway, Ss 2 cn nec cc dee ean ns betes khues i New Million Dollar, Skirts Indiana MMOH cccccrcccesecesesesseseseesesesesece meee 3 Préasaan, Montana's, Considers Truck Road "helen ‘British Columbia Urges Change St et Oe Ds sc cascasechoaewasee bere Road, Seaside, Paved with Gold Bearing Sand REE Agtomeees}** sss aekea sees’ op 6v ee sees Cleans ee | a i Surfacing Materials, inh eck he anase sas Oa en bam ee Road Wear, Plunger Measures to Thou- ne i hs vce seen base Rid aa eaan Roads, Double Fences on, Prevent Auto DE. .dcecbhaeevakevenen desea nb ue sh ie Roads, Good, to Protect and Develop Pana- CE MED nc scent cenne chad peste 6beee Roads, Ohio, Unusual Danger Signs on...... Roads—Pavement Maintained by ae Roads, Rural, Small Asphalt Heater for Re: pairing Matai thee thas kee cee sedess. cba Roads, Snow Covered, Tractors to Clear. Roadside Warning Signs, Accident Records Borne by ee ee ee ee POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 348 451 Roadster, Motorcycle with Simple Body Ad- Dt i ist weceeded oen¥.eebas 006 he Robe, Motorist’s Lap, Steel Clamps for Rock Blasting, Hydraulic Machine for..... Rock Drill Cores, Machine Splits for Min- GA ta RARE RPO REE ties Pei ieee Sea Rock Drill, I igs Gila atau ullhcn ic arta hee Re vs Mis ao Rock Dust to Stop Goal Mine Explosions... Rock, Pump for Cleaning Out Holes Drilled in Rockers, Auxiliary, on Convertible Chair. Rockets may Explore Ether BOOGM mM -CMONP, BOD FOF. coco cscccccsciccccs Rocking- Horses in Children’s Barber Shop. Rod, Connecting, Offset Wrenches for Re- moving ea ke ot eae heehee die bec Rodents Classed as Vermin Help Replant EY Se etaihtn naked owed da paths wes 004% 0 Rods, Connecting, Straightening of......... Rods, Small, Lathe Center Made for Use in Mics add ee DEGe aw en Waewddddea-0eees Rods, Two Iron, Boiler Tubes Measured by, While ES ea Roll Film Attachment, I 8 eval dae ae b ae ie yk oa Wai». xe Roller Curtain for Drying Prints........... Roller, Ingot for Weighs Over 100 Tons. — Mounting, Large Pencil as Substitute Ee ie Roller Skating Rink, Children’s Outdoor, Massachusetts City Park _Has Roller Skating, Saddle EE Es a ard Sik aha ha, Ot Won dE a ls steel Bid isn ae, Gi Roller, Wooden, Attached to Singletree with Chains, Used in Moving Large Concrete oo head oa eee oda ae aa Rollers, Pair of and Plate, Auto Made to . S-Series Roof, Adjustable, Booth Has............... Roof, Concrete Belt around Chimney Pre- ee EE tin ce da aie at kh aeiaedes as Roof Garden, Artistic, Feature of City Fac- vor by Allen P. Child Guest, at Hotel Permit While Giving Ventilation ................ Root Slicer Made from Milk Can........... Roots, Plant, Perforation of Augments Foli- ee ee ie hw eh Sab ae iho «ee Rope Ladder for Motorboat ................ Rope Ladder Omitted in Mid-Air Aeroplane DE evita eh ahddten Wake tite 60deKue'on Rope, _? ec naire tice eae be w6eaae Rope, New, Straightening ................. Rope on Boxes, Rubber Hose Scraps Protect Rope, Red Core Is Trade-Mark for.......... Ropes Hold Workers to Steep Sides of Mine Rose Festival, Portland, Ore., Floral Street Lampe Carry Out Idea oOf............000. Rosette, Emergency Substitute for Rotary Pump, Simple, ES iets od weal ae a tidlale a ae hae Bs bo Roundhouse Stalls, Each Has Three Smoke- SE Letedad ed ade bod Rete hia hes ae On Route, All American, is Proposed for New Submarine Cable to Asia..............5.. Route, Railroad, from Bagdad to Busrah PEE <snscdcharen st besctobsddagewese Route, Railway, from San Diego to Yuma, ee EC odndevecsccescisvepec Route, Ridge, New Mountain Road Open to Traffic, by John Edwin Hogeg............ Row Marker for Transplanting Rowboats, Frame for Paintin Rowboats, Unsinkable, in Terre ee eee ee eee eee ee eee eee eee Reduces Friction to Rubber. Band as Noise Maker............... Rubber Bands for Head Lettuce............ —— Cargo, Valuable, Landed at Western Por LHS I ES Ey PRE Rubber Covering as Protection for Inner Ch. ene het oun shies keaeetar ns ke Renne en Rubber Heel, Angular Cuts in Prevent Slip- ping CeCe eee eee eee ESeeeeseeeeseseeee

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48 POPULAR Rubber, Hose, Old, as Bicycle Tire Filler... 796 Rubber Hose Scraps Protect Roped Boxes... 781 Rubber Scraps, Bicycle Tires Made Puncture I heh aad a ad ay a Soe a se WO ee 311 Rubber Seed Oil as Substitute for Linseed Oil 205 Rubber, Sheet of Protects Auto Ignition TG 80 6-6 6500 66 On OS Was Deh 4 WR a wee ee 117 Rubber Shock Absorber for Auto........... 941 Rubber Stamp for Use on Curved Surfaces... 300 Rubber Trade, Far East Wrests from Brazil 338 Rubber Type Made of Inner Tube........... 947 Rubbers, Worn, Footholds Made of........ 613 Rubbish Yields Gold near Old Stamp Mills.. 216 Ruby Lamp, Simple, for Photographers..... 955 Rugs, Clamp Holds for Beating............. 785 Rugs, Display Rack Keeps in Order........ 116 Rugs, Rag, Made at Low Cost.............. 623 Ruins, Ancient, Camera's Eye Discovers, by Frederic Kinney OEE PETITE ES, ney fey 502 Ruins of Ancient City of Indo C ‘hina, French Restoring, by Francis Dickie ........... 423 Rule, Broken, Depth Gauge Made fro@i.... 313 Rule, Slide, Figures Shop Time............. 299 TS EB, aaa eee 765 Rules, Printers’ Brass, in Interlocking Form 731 Rules, Uniform, for All United States Avia- ef | a aaa are 712 Rungs, Lower, of Ladder Made Inaccessible EE dein A ica bn, did We ea he wR oo 454 Running Board, Small Refrigerator for..... 114 Runways, Trucks on Unload Cars........... 769 Rusk, Rogers D.: OE ee eee 676 Thunderstorms in the Making......... 30 Rust on Razor Blade, Oil from Hair Prevents 93 Rust, Tin Chloride Removes................ 142 Ruts, Automobilists Help Maintain Pave- SE TH FW OUMOO Gh cca cc ccccusveciser 116 Saccharin Dangerous Substitute for Sugar.. 260 Sacks, Empty, Piatform for... ....scccccess 444 Sacks, Walnut, Electric Iron Rids of Codling IND Sat ath alts eee Sain ck ki ot aie ie Le oe one 858 Safe, City, Loose Screw Jams Locking Gear 81 Safe, Floating, Sends Signal if Lost at Sea.. 481 Safes and Vaults, Gas Bomb Shields Con- EE a nl Ga aa seal ine A Sore eae as we We alacw ea G 51 Safety Belt, Value of Taught by Airplane I iadiala 1a a. cake, bea wlth oa ah Ws thao ewe eat 268 Safety Council, National, Danger Emblem ite Bare i ogo anatehiy wate ada bie ate lati a 867 Safety Isles, Reinforced Concrete, New Jer- I I ide, hs eco ics deca ad kdb ws 57 Safety Valve and Gauge Combined......... 618 Sagebrush Reinforces Banks of Irrigation EE ere ee ee eae 566 Sail Wagon Ride Gives Airman New Thrills 14 Sailor, Chained to Bicycle, Pedals from Coast ERS re ae 16 Sailor Dives from End of Battleship Crane 213 Sailors for Merchant Ships, State of Wash- ington Trains, by Lawrence W. Pedrose.. 425 Sails, Canvas, Replace Vanes in Odd Gear- ID Sa ox tana Sn sce dns ate a aaa ae Gt 332 Sake, Oriental Liquor, Still Manufacturing 6 nico ts Sa Si eues Maladie & aNd. Se lb eae 238 Sales and Production, Factory “Barometer” SR ae ee year eer genre Se 442 Sales, Telephone, of Phonograph Records, Se «.1ce che daaw den ovis ok hee eee 739 Salesman, Mechanical, Crowds Butcher Shop 756 Salesmen, British Traveling, 1,000 Languages i ne CR a ee iule de Bip aes te Mae ene 868 Salmon, Accident Provides with Second |. GREER Se ee ere ere 432 Salt Bed, Deep, Found in Nova Scotia....... 712 Salt Mine Cavern, Motion Picture Show I TIS ioe did sie sive i'd (Ae Sil eae le a Wo em 492 Salt Vats, Isolated Ranchmen Operate...... 235 Salt Wells, Chinese, Have Smal! Deposit of PY SUE 666i ceetecica we demeee anes 211 Salts, Copper, Detecting in Canned Food... 946 Salvage Dock, Big Floating, Launched at EY SEINE 12.0.5, ot nia, dow a Ord a ee eda 493 Salvage from War Are: as of France, Govern- ment to Use in Construction along Mexi- eT ae eee er pe eee eae 54 Salvage—Loaded Barge Brought to Surface TES 56) 5-0 wd & «$s Sb One 04k Aw 43 Salvage, Steamer “Ophir,” at Bottom for SO EE Ar 730 Salvage System, New, for Sunken Gold Ships 686 Samples from Carload of Coal, Spiral Tester Rb ein & ok ea be 6 Sale de Oe sek 118 Sanaker, James A.: i Se ie. canker es eeweeeeaeeees 480 MECHANICS INDEX, VOLUME XXXIII, 1920 Sand Blast, Engine Exhaust Provides...... Sand Dunes Rolled into Hard Road........ Sand Dunes, Trees and Grass Anchor Sand, Gold Bearing, Used to Pave Seaside DOE. Wik © a ead a Wes ae eh Rae ee 8 mae 8 Sand Molds Used in Making Steel Anchor Chains Sand Pump, Adjustable, Has Interchange- OR OO re aarreaee Sand Pump, Electric, Used to Raise Build- ee CO rer: ear Sandpaper, “Coarse, Food-Chopper Clamps =. Aa pera ee Sandpaper, Envelopes Opened with......... Sandpaper, Level Prevented from Slipping by Bamepaerer Pencil Poeimter «i... .cccsccccccces Sands, Singing, New Explanation a Tank Is. Sanitarium, Compressed Air, Steel * i Hospital... Sanitarium, Drink, Now Radium Sanitarium, Patients Make Flowerpots of oy lO Ra eee eer Sanitation and Etficiency Mark Egg Break- ing Plants under Government Supervision Sapwood, Strength of Compared with Heart- eS aia ie Reh he BC aS oe te wd mae Sash, Window, Raising of Locks Removable Pn: + te weaned a dpdie data a aA Meee eS Saw Bench, Motor Driven, Has Tilting Arbor Saw, Hack, How to Make Run Straight.... Saw, Horizontal Band, Cuts Metals by Grav- ORES ree Saw, Power, Tilting Table Simplifies Use of Saw, Scuffle Hoe Made from................ Saw, Small Portable Band, Trees Felled and 72S Fa ey ere Sawdust and Type Metal, Water Separates.. Sawdust for Plugging Holes................ Saws, Gumming with Reamer Saws, Largest in World, for Western Mill.. Saxophone, Largest, Smallest Boy Player Uses Scabbard and Sword, Gold and Jeweled, Pre- sented to Pershing Seaffolding, Simple, becomes “Theater” ED ae Giga ad ark a sas 6 wre eee Scale, Boiler, Removing with Steam........ Scale, Butter, Operates in Oil Bath.......... Scale, Draftsman’s, Handle for............. Scale for Parcel Post, Keys Operate........ Scale, Learn to Read by Tenths............ Scale, Postal, Made from Mailing Tubes.... Scales, Railroad, Double Track Protects.... Scales, Small Precision Balance, Used for Finest Work Scales, Special, for Testing Aluminum Cast- SD ti cbt cbrweaedne dar at cegheknaa den gees Scales, Special Weighing, Tire Manufac- TT PEST e TTS eT eT rer Scales, Tiny, Weigh Pencil Mark...... Scaling, Enamel, on Steel, Caused by Over- DE on. 0: abe cau Da RORERE RAE es kbe'ekaen Scalp Cutting Removes Wrinkles...... Scarecrow, Automatic Explosive, Effective eas ale oe ia aes we a6 6h aE ares NR ye errr ee ree Scenery, Cylindrical, Gives Illusion of Speed in Movies Scenery — Wonderland Revealed by paemwaery, Dy J. Soeckl AllOP.. occ ccccescwes Scholarships for Students of Railroad pro- ee iris dS ee a oa dita ee tere eRe ae School, Britain's Air Service, Teaches Cul- tural and Classical Subjects.............. School, Continuation, Young Toilers Sent to 8 OB OS aarere re ere ree School, Country, Ideal Plans for............ School, Factory Establishes for Foreign Em- ployes School, Fly Casting on Roof of City Build- Pe ie wet cet ee aad ok ek oh eset haa e en Obes School, Flying, Chinese Have in Canada.... School for Photographers, Navy Opens...... School, Mechanical Trades, Students of, ee ne ae ee ere School, Nautical, State of Washington Trains Merchant Sailors in, by Lawrence W. ET 5 os elds 6 5 hein Obie tw aes eee Wha oe i School, New York Commercial, Buys Wall Street Landmark School, Nurses’ Training, Free City Hospital I ng da bah ia ie ee es a aoe wae School, Public, Nature Rooms Contain Many BIRR RCS es Sea Se i ae ree School, Sheriffs of Washington State Go to.. School Svyvstem, United States, to Guide Ce TINNED ook s san ddcwocaeses 301 709 SO 245 226 494 96 Case en — et Bod Sena bo vibo “In =x 686 118 848 774 554 699 480 410 648 390 710 omer = we a x, itd

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301 709 &0 245 226 494 96 ; 142 778 , 605 —6 936 892 845 739 749 » 106 . 248 7 - Baz r 843 . 945 717 f 66 . 932 d . 902 779 621 940 882 . 760 . 421 or .. 578 . 294 . 714 . 765 . 574 SS .. 473 ~. 442 or — . st- .. 615 LC = ... 436 a. oe BP- SS CC pe ee ive a ci ped ~e- 554 few ... 699 ro- ae 80 ‘ul- SS . to ... 906 a. Sm- cos Bae ild- eo at aan a ae of, -aite ae ains Ww. ee Seeds of Grape Yield Good Cooking Oil re a Ce SE vc cuwecdenbese<cavane Seesaw and Merry-Go-Round, Combined, for Pt . cla haus khesedt nin aad ne © ta 06 a4 Segments, Boring and Calipering Self-Feeding Device, New Letter Copying PY Pe teccttone sevens nnden bene eeee Semaphore Arm, New Auto Warning Signal PE. cctenne ced Hb eeeheee oun ees a aie Semaphore, Tall, Visible over Tops of Trains Semaphores, Low, Railroad Uses............ Se — = Grain, Adjustable Rear Wheels i Cn ive daigaik bee Aa e es eke eS cied Separator, Oda, Beans Sorted from Mud by Separator, Steam, SE Fee Weeiles se ccevens Separator, Wild Oats, Culled from Cultivated St CT srctdwenddenh see ebbeerewvenee bea Sepia, Photographs Toned to .............. Sermons, Phonographs to Preach.......... Serologists, Swiss, Blood Tests Made by Suggest Dual Origin of Man............. Service Button Fastened on Coat Serves, pene for Lawn, Sown on Canvas or i Telephone Enables Invalid geretan Station, Motor Driven Toy Plane Ad- CS. 6 heobn 66s 6s 0anko 00d Oxebhicueens 60 Settlement — Alleged First European in America, Stone Tower Commemorates... ————- California, to Get Both Farms and unds ee Settling Plants, Miniature, for Ohio's DE ncteavdnescbecke beds H40nnesccanws Sones. Intercepted Beer Pourea into at Zion | PP TToT tr Te eT eee eer ee eee Sewer, Panama Canal Zone, Plugged by Crocodile ee es Sewer System for Summer Cottage Sewing Machine, Darning Attachment on for ED: vo Wonn e405 5066s eee si 6h peeee ose Sewing Machine Inventor and Family Hon- “ 3 2 — - Sree Seer errr Sewing Machine, Kitchen Cabinet Made from Sewing Machine, Pincushion on............ Sewing Machine Travels around Mattress. Sewing—Worn Shirts “Made Good as New” Shades, Electric Light, Made from Paper Cartons 64 706 477 695 245 421 695 870 240 853 775 439 65 358 456 886 . 560 111 651 §11 262 942 753 55 304 9 . 892 616

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50 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Shaft Coemne. Resilient, Has Single Coil es Sick pissin Gi a hang ie aa a Ne Shaft, old Mine, Sunk Through Garage PS ata as lk ah aso alan gh Bde ae LI 74 Shaft of Crankless Engine Turns by Screw ESS rvrerrrrr rr rir ere rire 108 Shaft, Twelve Mile, Scientist Proposes..... 494 Shafts, Handle for Rotating ............... 447 Shales Will Supply Oil When Wells Go Dry, A A A 7 Pe aa ara 561 Shampoo, Barbers’ Chair Has Basin Attach- Pe CO vcec ccna eee tear baene eteaeees a4 4 Shaper, Tapered Work Held in............. 942 Sharpener, Pencil, Crank Operated......... 479 Sharpener, Pencil, Made of Safety Razor: NG ee ee ie ei Ras tng eee ek wines ee wine Oim 155 Shaving Soap, Saving Remnants of......... 287 Shears for the Bench Vise...............-..- 797 Sheep, Crossbreeding of Develops Improved te a ete wl ae ahs wn A oa alae Se ai Sheet Metal, Gate Valve for Irrigation Made NN hat a danlnsiaak sgh a th ska Lae ek a Sheets, Painted Metal, Holding Apart....... 780 Shelf Bracket Barrel Support.............-. 939 Shelf, Hanging, for Motorboats............ 949 Shelf, Tire Repair, for Auto.............-. 147 — Boiler, Temporary Plug for Stay Hole _ Shell Casing, Table Lamp Made from...... 7386 —, Nonshattering, English Steel Mill Shell, ‘Oad German, Message Replaces Ex- Pe ie senna stew beeen ee e0e<heanaeaene 530 — em Unearths Old Hebrew Mosaic se avem Shell oe Shoot through Coil to Gauge 568 — Waterproof, Used in New Life Line ‘ Ea Me er ee Er ey re eee Shells, Buried on Battlefields, Electric Di- THE TOG TORSO. oc vc ccc ccecscosesace Shells, Electroplated, Used as Searchlight I ass ign 0 1m Ataf a as rae ae aaa Oe oe en a 6 Shells, Large Caliber, Odd Electric Truck aig abi Sees Sa RINE CR EIR Rese ET Shells, Getnanes Department Reloads with Simple DE tiscenns ane on.eeee ans Shells, Sea, and Cement, Furniture Embel- EB EE aaa ee Shelter, Warehouse, Door with Horizontal MD ina a ca wik'ad ace wh ea wee ae akin eles 871 Shelters, Galvanized, for Traffic Policemen in Kansas City Shelves Built in i. Se 940 Shelves for Bookcase, Table Leaves Make.. 472 Shelves or Racks for Tools, Swinging...... 42 Sheriffs, Washington State, Go to School. 710 a "Automobile Radiator, Regulated by : Shields, Puaatee, Protect Passengers on Bus OS ee eer 532 Shields, Leather, for Auto Fenders......... 64 Shingle, Aerial Glider Made from.......... 787 Shingles, Composition, Gauge for.......... 285 Ship, American, Explodes in Havana Harbor 677 Ship, “American Press,” Seventy-Seventh to Leave Hog Island Ways Ship —_ Aeroplane Models, Western “7 ese ee ee ee 58 ship Builds Heated Cabin for Frozen 4 pa 428 Ship, Cans along Rails Hold Halyards of. 862 Ship—Cargo of Cattle Swims to Shore..... 893 Ship, Concrete, Two Hundred Shots Needed to Sink 19 Ship, Funnels and Plates of Carried by NE Fy ccd onli d eh de ea eee wis tead eee 67 Ship, Largest Oil Carrying, England FO er ee Pn re 572 Ship on Fire, American Submarines Sink at ER, a oe ose ea! n ie ee aS oe Oe ee Ship Plates, Ingot od Bending Roller for, WOES GUOT BOO TOMS. 6 oc ciscscvssccveses Ship, Propeller Shaft of, May Turn on Ball I Ch rtita Wadia et Alaa alnn ae a ae eae eo 666 Ship, Range Finder Used on, Makes Naviga- NE ie int 6 dike ee dees toh eeT es Ship, Special Cofferdam Saves Drydocking of 842 Ship, Sunken, Returns to Port after Months OOS SERS errr rer ee Le ee 730 Ship Traffic through Panama Canal In- I ery er ee ee 47 Ship, Transport “America,” Largest to Pass CPO PUMA GREE. occ ccc cwsccccences 87° Ship, Viking, Chicago’s Famous being Over- hauled ohio, Wireless Alarm Bell Relleves Operator OE TE ree Per TT ETT eee rere 706 Shipbullding——Fast Destroyer Completed in - arena 217 Shipbuilding Nations, Argentina Joins Pt Me cass tietaerenhee ae teackseenente 277 Shipments, Canadian, Express Companies and Railroads ask Prepayment on...... 37 Shipping Aid, Harbor Obstruction Becomes, ee Dee Bh, RMR cikweeacveeransaese 833 Shipping Point, Ocean, Providence, R.1., As- i ee Oi cick keene ake nawoe 58 Shipping—Strange Cargoes Sent from BEOEEOE BD DOS TOME. ccccscccccvctcesers 198 Shipping—Webbing Handles Urged for ERGGVY BOESS ORE CHECOS. «0c cc escccesccse 356 Ships, American, Now Carry Half of Na- CO Eee errr eer TT frre 429 a -~ — Planes Guided by Radio Path- . CRG aietete aries 563 Ships, British, Wireless Warns of Storms.. 724 Ships, Builders Put Phonographs on as Ad- DOT bt50:¢swe eh éns sk ban che ake anes 417 Ships, geen Platform on Wharf for Un- NE. sla a aioe die Wide dad a ag oi ie eee a 554 Ships of nenorhens Merchant Marine to Have EE nid Gla Wie a Oe iw Acer igek Wi bh in are ttl 502 Ee a 515 — ‘Sunken Gold, New Salvage System ene Ships, Threadless Bolt for, Has. Wedge In- stead of Nut Ships, United States Freight, Set New Standards, by Lawrence William Pedrose 669 Ships, Unusual Ore, Steel Company to Use. 708 Shipwreck, Floating, Safe, Sends Message if Xt =e eerie ene 481 —. Danish, Large Motorship Launched ; Ci bteneee dbGn RES eae be bees CAR ae Os 41 shipyard, German, Big Floating Salvage Men cccctenabsenanvaws hae 493 Shipyard, Hog Island, “American Press” Seventy-Seventh Ship Completed......... 437 Shipyard, Hog Island, Now Owned by Gov- Race ara ea eer 726 Shipyard, New Jersey, Naturalization Papers Given as Diplomas in Americanization EE EE ee eae 235 Shipyard, Western, Launches Six Boats in CC ctead tas Chi ye 6b ee Adee a kaboes 598 Shirts, Worn, “Made Good as New”......... 616 Shoal, Long Island, Steamship Grounded and POOR GUSIME DUOFEM... 2c ccccccccscscecs 742 Shock Absorber, Rubber, for Automobiles. 941 Shoe Brush, Mud Scraper on.............. 958 Shoe Cabinet, New, Holds All Equipment... 753 Shoe, Correct Form of Assured vy Gauge for EE Ci a PERS EA KSEE ae WER EER See 182 See TOP BMGNe BEM. coco cc cccccesscsecreces 294 a Hinged, Replaces Wheel on New Trol- -_ ££ SSeS PE HERE eee eae “Shoe Hospital, " Cycle Serves as “Ambu- Wann WA Sincen so od ew era he 907 ao R gieenys Pneumatic, Makes Walking ee shoe, “Light ‘Insole ‘for’ ‘to Correct’ “Fiat” a Pi, Soc eees cca hens oe de SADE ee Cee Shoe, New Army, to Serve All Purposes..... 352 Shoe Polish Box, Thousand Dollars for De- "Sy Ra ae ee 959 Shoe Prevented from Slipping by Bottle ME. Atnttesbcasaherkxkénebaswasanens esos 316 Shoe Repair Shop Has Stalls for Patrons... 102 Shoe Repair Unit, Mobile, U. S. Army Has.. 244 Shoe Soles, Staples Mend...............45- 638 Shoe Tongue, to Prevent from Shifting..... 786 Shoelaces Secured yi Ps 66 tcvouses 951 Shoes, Canvas, for Farmer. ......ccccccccves 619 Shoes, Detachable Heels Fastencd to without DE Soci ria diee whew nt Aade sear eeraheoan és 713 Shoes, Inner Pad of Rubber and Leather Prevents Side-Worn Heels............... 114 Shop Basement, Girder Dropped from Crane IED. drilc sin ba bane 6 Une 6Wd eek ees Os 669 Shop, Butcher, Mechanical Salesman 3 | SE ae Perron 756 ai N tienen hand aie ae Ne ed beak ara & Re a 818 shop. Large, pont Warm by Small Furnace & . SSR asap rater 62 Shop Time, Slide Rule vigucos in cena ieta aiew . 299 Shop Tray Made from Nail Keg............ 138 Shopping Basket on Wheels for Children... 761

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756 Sirup, Malt, to Take Place of Sugar 818 turbing Short —— Grooved Porcelain Prevents Oe Pe no. 05h 0055006.000 040k 64st SRO eS He lu Shots, Pistol, Stopped by Glass Twelve Feet RWHGF cccccccecceecceveseccecscecsccscces Shoulder, Mother's, Baby Carrier Hangs from — and Auger, Settling Silo Straightened ote cine tat =o ee | shovel, Cabbage Harvested by............. Shovel Handles on Garden Tools Shovel, Snow, Elephant Handles........... “Shovel, The Steam,” (Poem), by Lydia M. aE . - ssa ee eer Shovelers, Crew of, Rails, Pulley, and SO TURD 2 vcctksecsseseccssecresvaes Show Card Drying Rack ee Showcase Lamp Sheds Imitation Daylight.. Shower Spray Nozzle Rinses Dishes........ Sick Room, Glass Vase Is Deodorizer for.. Sickness, Red Cross Battles in Siberia..... Sidecar, Motorcycle, Built like Limousine.. Sidecar Taxi Is French Motor Novelty...... a Car for Children, Made like Aero- DEMME cccccscccccccoscceccvcccescevervecee Sidewalk Car for Children, Steered by Feet Oe PO WF i sce scwacscccsccisens | Sidewalk, Cement, Drain for............... 8 sik ——— Display, Aviary Lattice Cut to 7 Sifter, os Prepares Potting Soil.......... Sign, Mievater, Gaves Time... .cccccscccoce Sign, Monster, on Truck, Church Service Ad- DO obo 6 oer 50 eng e ens vcs ceeseeseene Sign Printing without a Press.............. Sign, Windmill, Made from Bicycle Signal Circuit for Milk Ticket............ Signal Code, British Submarines Used Jets of Water as a ee ee ey man Floating Safe Sends If Lost at Sea. Signal System, Finger, for Autoists oy Whirling, for Auto, Warns of Sion | Se RR rier ree sigualing. Invisible Rays of Light Used 9 Signals, Heat Rays Used for with Secret _ 8 | FAR aan rr areas Signs, Drawing, Desk for Showcard........ Signs, Electric, on Car Ceilings Flash muenes Oe EE ncctbaneresetaar bus bas cen Signs Made from Gummed Paper........... Signs, Novel, Warn Careless Workmen...... Signs, Roadside Warning, Accident Records on = | EEE rrr eee ee Signs, Street, Auto License Tags Make...... Signs, Unusual Warning, on Ohio Highway Signs, Warning, Replace Gatemen at Grade SE. |. 4 brn di es Ge eke Wb Wie eke ack Wie aie @S Silage, Cornstalk Cutter Makes in Field.... Silicates, Large Proportion Needed in Mix- ture of Concrete to Withstand Corrosive ne Oe see GN, 6 ok cea tahoe be uaewe ne Silk, Experiment with Spider Web as Sub- stitute for SN > assay. thc Wa 16. oscar wb a oS le a wl nice Silkworms Japan to Give Improved Diet. Silo, Concrete, Used to Make Outdoor Fur- } TE 260445 066406004000 6656990066000 4 4880 Silo Door Mounting Forms Slide, Lock, and EE wnin Soba wide weeds ee AER me ears bee Silo, Old, Farmers Use Simple Method of Wrecking Silo, Poultry, Made from Barrel............ Silo, Settling, Shovel and Auger Straighten 8 Silos, Converted High Wagon for Filling. . Silver Nitrate, Ink Made Indelible with.... Wilver Polish, Cigar Ash Used as........... Singing in Bath, Cadence of Water Explains Singing of Sands, New Explanation for..... : —, amen. Garbage Can with Perforated or ite, Blast Concrete Foundation without Dis- ite, Small, Four Story Office Building on. 940 Sifter, Greenhouse Soil, Small Motor Works 44 3 Silk Fibers, Short, Make Woolen Cloth Sub- 2 Skate, Scowlike, Found in Wall of Old HS AR err eee er ee 138 skater, Ice, One Leged Veteran Is Expert.. | skaters, Flood Lighting for ..........c.0e00 2 POPULAR MECHANICS INDEX, VOLUME XXNXIII, 1920 Skates, Electric Roller Skates, File Both at Once 51 ibe keths e482 4eb 60 304 Skates, Old, Ice Glider Made from.......... 316 Skeletons, Flying Keptile, Large and Small 876 Skeletons, Human, Man Assembles for Third err rrre rr Tree Tre 200 Ski Glider, Alemiame TIPS «2. cccosccvvcsevcs 307 Ski Jumpers, Contesting, Loop the Loop.... 686 Ski, Toe Strap Makes Simple Binder for.... 159 Bee, MORGTOR, EPOMD T-TGLIB. cc ccwcscccccccss 605 Skids, Truck, for Use on Stairways......... 301 Se, “Ry GONG 2 ccaceenneess0ehsn eer 951 Skirt Marker, Bulb Operated, for Home Pe Seta cde ddebhiee keh os ee 608s 6 oe 428 Skis, Alaskan Husky Pulls Man on.......... 589 Skis, German Women Use in New Sport..... 45 Skis, Mail Aeroplanes Fitted with for Winter Pt stnciravidek ser waeeeeagathadedtasds 882 Skis, Water, How to Make and Use......... 628 Skyscrapers Built from Top and Bottom ERP Te erry eee 210 Skyscraper, London’s First, Violates Ancient De dock OSSERSESEEEOS EER DAKE Oe 6a 0.0 726 Slate and Numbered Hooks Laundry System OER re ys ee 79 Slate, Marble, and Glass, Methods in Drilling 770 Sled, Made from Auto and Tractor Wheels, Makes Speed over Alaskan Snow......... 885 Sled, Motor Wheel Driven, How to Make.... 148 Sled Runners with Plow Attachment for 7 ee ee ae 293 a — Hand Cranks and Star Wheel in (triads tenets enh sith een wekh oes 281 Sinee and Reindeer Team Used for Summer BEE, ak Ghe Kew e Kee eRe ahi abt cae aob bem e 6 874 Sleeve Valve Motor, Rotary, for Farm Light- ee rrr ey ei 838 Sleigh, Buggy Converted into with Pipe and | errr rrr rrr rrr 454 Sleigh Races, German Sportsmen Patronize 330 Sleigh Ride, Making a Comfortable........ 311 Slicer, Root, Made from Milk Can.......... 317 —. saa and Ladder, Silo Door Mounting PARSE SAMA ARSDH DEC REDK OARS DOSS 433 Slide” Rule Pigures Shop Time. ......scscces 299 Slides, Lantern, New Process for Coloring... 66 Sling ‘Shot Aimed like Gun................. 632 Slipper, Dancing, with Ankle Strap........ 593 Slot Machine, Street Corner, Is Mechanical PE tien edehb nds he nnw hee eee ee 6a a 718 Slot Machines, Coin Operated, for Selling So di As are was o.oo ate nda wae ta se aed 565 Slots, Adjustable Milling Cutter for........ 290 Smelter, Foundation of may Be German Gun Dn Dcvheckienwhhes waked Oene ee 6b do Oe a owe 886 gusaiee, Flashlight, Trap Catches......... 629 Smoke Samples, Sait Lake City Expert Gets > PE tccceeneesud reason eek 600s 08 226 Smokers, Hint for Holding Cigar........... 769 Smokehouses, Primitive, for Herring....... 514 Smokestack, Broken, Shots “Knock” Down 328 —ee Electric Light Globe for Clean- ese in. totcebvsees eaten eed eeidescsadan pad ani Smokestack, Iron, Given Coat of Concrete.. 229 Smokestacks, Three, for Each Roundhouse Dt ‘hitikees cednichenh an ckhe ease aeee se 256 Smoother, Moving Belt, for Concrete Pave- | RP err err errr ree Te 666 Sueaatere, Liquor, Devices like Life Belt errr eer eet Tee ee 658 Smut Disease, Grain, Painted Pictures Show 682 Smut, Drum Rotated in Hot Water Removes i Pn vee td eadnn se OR ae eg han ede ae 502 Snake, Rare and Deadly, Found in Bunch of EKO r eee Ce eT TT 279 Snap Holds Light Clothes on Hanger....... 632 Snow Blockade and Hurricane on “Atlantic Se (sinbhiehd ea kee ewahseb oe be ehan ss eN ee §18 Snow Covers Mountains of Corn in Colorado 25 Snow, Extemporized Motor Sled Makes NN CP 5 oak dened ous be be 66 oes wes s 86 R85 Snow Fells Theater Canopy in Record Storm 731 Snow, Hook Pulls from Roof.............+.. 295 Snow, Locomotive Plowing Lands in Swamp 830 Snow Pusher and Shovel Combined in One vevantiswia San eee es CEsedeh SO Cd ee wee 243 Snow Shovel, Elephant Handles............ 920 Snow Speedster, Motor Driven, How to Make 148 Snow Surveys to Obtain Knowledge of Springtime Floods, by J. Cecil Alter ..... 557 Snow, Tractors Proposed to Clear Roads of 90 Snowplow Attachment for Auto Cleans Road 879 Snowplow, Elephant Gives Children Ride on 920 Soap Bubbles, Science Preserves Long in Surface Tension Study ...........esseeee- Soap Bubbles That do Not Burst

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52 POPULAR MECHANICS Soap. Lack of in Russia, Diseases from Lice NN ie aide at aes canine taiwan. le © ale hee al Re Soap, Shaving, Saving Pieces of............ Social Center Community House, CE ics ek ka ee we ee ed Wn wie alk aoe Society, American, Presents Italy with First i CS | 6 s.<e 5.00 50's eo eds he een se Society, Astronomers’, Amateurs and Profes- CE Se) Jin he then Rake eRe eee as a ak ae Society, Chinese, Forbids Women with Bound Feet ................ Society, Eastern, Studies Horseshoes and At- tachments to Prevent Slipping of Horses.. Society, Language, Abandons ‘Simplified’ EE EO rrr Torr ree Society, — of Bibles for Blind 0 EO "=r aa eer er errs eres Socket for Vaccum Cleaner Protects Light EE PEEP Terre Te Tee eT Socket, Single Electric, Accessory Permits Me OE 00 t0nit wep 4-09 602 eke hed aewe Soda, Nitrate of, Moss on Meadow Killed with Sodium Fluoride and Pulverized Sugar, Ant DE ns pac eat ukes care 2d CRE ee ED Soft Drink Stand, Floating, in Canadian "FE eae errr Tee er ee Soil Experiment Field, University of Illinois Campus Has Oldest Soil Fertilizing, Proper, Simple Chart Shows Soil, Potting, Ash Sifter Prepares........... Soil Pressure Gauge Tests Strength of Dams Soil Sifter, Greenhouse Motor Works....... Solder, Machine Oil Aids in Filing of....... Soldering Acid, Nonspilling Container for.. .- “wes Electric Irons for Kept Ready for SD ekki of a SARA ee Sioa lie As 6% OO aS Pl Re Soldering, Flush, for Leaks................ Soldering Flux Spreader ............--.++.- Soldering Tool, Gas Heated Glass Cutter like Soldier, American, Is Arbiter in Caucasus. Soldier, An American, Pay of Figured in Rubles s B. < cin atin dike Malan ec nie Ave ck de aes pole. eae daca Soldier int Sailor War Memorial, fornia’s to Resemble Famous Palace...... Soldier Civilian Community House at Man- CD 3. a 6.n tae mee nse 606eede genes Soldier Dead, American, Flags Ordered for ee Gl ND MEE hn cccras bane cr enone Soldier, German, Takes Dive in Full Equip- FPF Trrr rr err eT eT CTE TCT TT Te Soldier Memorial, Greek Theater as, City ihe ae ee ree ee ee Soldier < “peewee Town Gets Community SD a. ass wicaenel whe ula ea oes ek Soldiers, “Ashoricas:. Sit on Ex-Kaiser’s £65 ode kk eab Nee kwh ete oe eee ek en es —s Animals’ Nerves Grafted to Limbs Soldiors, Blind, Books Made for, by Blind DERE Ce CD CeSO DORE EOMETE ONE COOL OESBEHSESE®S Soldiers, Blind, Instructed in Core Making.. Soldiers Design and Build Own Open Air Theater Soldiers Play Pool with Croquet Set....... Soldiers, 28 from Army Recruit Educational Center, to Demonstrate Training......... Soles, Shoe, Staples Mend................. Solitaire Board Aids Invalid................ Solvent, New, Cellulose Content of Fiber OM vdeo 2 dae hha a aha adekia ae wkd a Song, College, New, Fifty Dollar Prize Of- fered for by Iowa State Alumni......... Soot, Chimney, Old Gold Dye Made from.... Sorghum Cane, Old Wringer Converts into II ahaa Six won cm a Ai ae aa at Gr ec Sonn’ J aprements Used to Survey Diamond I iis & cin adn in ae oleate te 4 at clan dik usts' dicate rad Sound ll Run Miniature Car, 8 Sr ei re Sounder, Automatic, Measures Ocean Depth Sounder, Registering, Dangers of Sea De- * atria Seana Soup Kitchens, Red Cross, Burn Oil Taken from Water South Pole, New Expedition to, by Paul I na aie Ang ie a a @ Alpacak alte ovaries Southward, Ho! by Paul A. Jenkins....... Soy Sauce, American Chemists Discover Secret of CHOSCCH CSC SE SHOES ECE EE SEES EHH EEL ESS Spark Plug Cleaned over Gas Burner..... Spark Plug Pliers, Insulating, Clothes Pin as Spark Plug Screws, “Paper Brass” Repair for Spark Plug Tool, Three Purpose, Is Simple EE ag oe Seti Uae ahSbe'nte ad ow dain pow ose ton ons Spark Plug with Gas Valve Acts as Auto EE 50.9.6 Oks Wad Reed a oh bb ce cea alee 571 411 736 697 66 638 638 516 480 395 0 INDEX, VOLUME

XXXIII, 1920 Spark Plugs, Ammonia for Cleaning........ 781 Spectacles, Amber, as Ray Filter for Camera 775 Spectacles Cause Baffling Telephone Mystery 57 Speed Counter, Old Watch as.............. 927 Speed in Movies, Cylindrical Scenery pene: I NE sala i te oa atm Odi ac eae Bae 554 Speed Limits, Novel, Japan Has............ 119 Speedster, Amphibious, Air Propeller Drives 813 ay oe Motor Driven, for Coasting and EE Ea eee rye 148 Spelling, e.simplified, " Abandoned by Lan- NS "Fg PR ap eas area 832 Spice and Tea Warehouse Fire, Falling Walls and Pepper Storm Mark........... 574 Spices Prove Valuable as Food Preservatives 278 Spider Web, Experiment with as Substitute Pn cictackecte Seah i reteeis seraneeees 336 Spies, Russian, Carry Photo Messages on USES te are eee ere 873 Spindle File, Arm on Guards Papers....... 602 Spinning and Weaving of Glass........... 467 Spittoon, Papier-Maché Cups for, Make i ao cine sauldecewneeee wan 435 Splice for Surveyor’s Tape.............+.:. 616 Splice, Smooth, for Heavy Wire........... 614 Splice, Strong, for Broken Stick........... 477 Spool, Empty, Rolling Toy Made from..... 473 Spool of Thread, Clip Prevents Tangling... 114 Spool Stopper for Glue Bottle.............. 948 Spools, Empty, as Clothes Hangers........ 450 Spools, Large, Rope Straightened with...... 941 Spoon Bait Polisher on Boat.............. 796 Spoon, Double Folding, for Travelers...... 434 Spoon, Wooden Beating, Twirled between EE acd io anche ee ae ee a Ae es oak ee we 914 Sport, New, German Women Adopt........ 45 Sports—Luminous Football, Eastern Coach SO =e reer 742 Sports—Push Ball Contests Enjoyed by Chil- Ghonm th CUCORMER PAPE. ccc ccssvccacss 761 Sportsman, New Rifle for Resembles Army EE So Gal kc ea 6 ae Bike WA we Oak nae a Sportsman Shows Canoe Is Versatile Craft. Sportsmen, German, Enjoy Sleigh Races... 330 Spotlight, Automobile, on Windshield Has eC ac acs whe Cad gs ome 52 Spout, Detachable, for Square Cornered Cans meee, Pemmes, FOP GHIGRR, occ ccccsvseceses 461 Spray for Bath Combined with Brush Is New eo EF aa Sere 274 Spray, Nasal, Forms Blast Lamp........... 635 Spray, Pneumatic, Walls Evenly Water- SS | Perera eee 90 Sprayer Used to Remove Old Wall Paper... 461 a Tire, Old Ice Tongs Used for in Shy ar ee ee 457 aeving “Coils, Tool Makes for Eyeglass OO Ter ree roe 112 Spring Cotter, Tweezers Made from....... 622 Spring Guide Helps Piston Slip into Cylin- oes I aN ah gaa Nt a aca esl fr Sh hah Psi ak 4 a Spring. Hot, OD id wala a headin bt 4b s awe es ea 6 og 242 Spring Lock for Sliding Door............... 619 Spring, Old Bed, Makes Pump Screen....... 792 Spring Steel Wire Makes Simple Snap...... 132 Spring Water as Motive Power............ 625 Spring Water, Clean, for Camp............ 957 Springboard, Portable ............scecseces 95€ Springs, Automobile, Compressed Air for DT scteUduneed 4iea ee wehnee< eas arceeds 462 Springs, Automobile, How to Level........ 775 Springs of New Popular Automobile Have Peculiar Arrangement ......--.--eeeee0- Springs, Oval or Flat, How to Make...... Sprinkler, Lawn, with Many Perforations for De CED eo vcceas sd 00nd edeeccesune ee 38 Sprinkler, Pipe, for Bridge Eliminates WE GERUEE nc ccc ce cctereatersecounve §11 Sprinkler, Rural Road, Filled by Gas En- PE: oC Sanden SPRAS SEAN Oe RRO eee tee Wee 734 Spur Gear Teeth, Device to Prevent Wear- BY OE Sakidaedd sre SeeeRNetdndandes concedes 751 Square, Laying Out Circle with............ 474 Square, Special, for Mitering.............. 139 Square, Surface Gauge Built onto.......... 631 Squirrel House, Winter, Nailed to Tree. 749 Stacker and Hay Rake Combined in New Sh Pe ono nds uss eae Obes sees sae Stacker, Hay, Handles Heavy Loads........ Stadium, Athletic, Chicago Plans Largest... 369 Stadium, Western University Plans Largest, by Lawrence William POMONID. occ eus 85 Stain from Wringer Rolls, Benzine Removes 45 Stains and Discolorations of Hands and Fingernails, Remedies for...............

~ eahaeit Be INN rae i ea ee ins

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\era fery ives ives and an- ling ives tute on lake -e eee seeee seeee “eee 330 461 274 635 90 . 461 457 LH MOIR Fee ho

POPULAR MECHANICS INDEX, VOLUME XXXIII Stains, a and Lime, Removed by Harm- ‘lu ED rk ike GO eda oN 2 ae Oke 111 Stair Walls, Old Table for Cleaning........ 779 Stairway Door, Location of Knob Saves EEE PEPE PE eer nr ree eee 318 Stairways, Truck Skids for Use on......... 301 Stairways, Two, on Novel Railroad Foot- DEE srnneerernends oo ebh0en de eeeen wenn 579 Stalls, Shoe Repair Shop Has for Patrons... 102 Stammering Advertisement Helps Investi- gator of to Test Cerebral Congestion Hy- EE a Sikes tks aed ORE alee eS we O 259 —- Collection, Greatest, French to Auc- a PPT TTI Cre CT TTT TTT Te Terr Tee Stamp Mills, Old, Rubbish Piles of Yield ene Stamp, Rubber, for Use on Curved Surfaces. 300 Stamps, New Postage, German Government DE stdrinkege set eebieheearnardeeeas kee s 438 Stamps, New Series of Polish Republic Is- DE Heeb tee ERA Oa. eR NOD AEES eR Re Ee eee 916 Stamps or Photo, Tool Slits Paper for At- 0 a rere reer reer 634 Stamps, Postage, Ukraine Has Triangular... 122 Stand, Adjustable Reading................. 945 Stand, Birdcage, Made of Wicker........... 115 Stand for Bicycle and Parcel Carrier Com- PE 2st nee kak ake sree eRe Oa aS eX a 79 Stand for Potted Plants, Tree Trunk Makes 945 Stand, Front Axle, for Autos............... 618 Stand is Attached to Tobacco Pipe......... 460 Stand, New Overhaul, Holds Auto Motor in hs Aha a dee 06 Ske ea aS a a> 732 Staples Mend Shoe Soles................45. 638 eo -Pointed, How to Make with One 158 Star Forming Toothpick Trick............. 637 Star, Moving Picture, Dummy Rehearses for 233 Starter, Aeroplane, Spins Propeller Shaft i area aoe pepsi 653 a ye hate, Spark Plug with Gas Valve 50 State, Arkansas, Offers Half Million Acres I ae ee 195 State, New York, Young Toilers Sent to Cs vibe hk Micke a ea a aaah ee oo 906 State of Green Gives Medals to Soldiers of PG. Wooden, of Hindenburg, Decapi- 28 stay “Hole in Boiler Shell, Temporary Plug ves Steam Condensation, Cover of Old Fashioned TOCRe ASOOMIMTIIMES o.oo cc ciscscascesecece 274 Steam Crane Rescues Imprisoned Horse.... 103 Steam Engines Serving as Capstans Draw PEE Ch6b5n0 6a + GAwebeddeks oe de soe btn ode 267 Steam Generator in Furnace Moistens Air of DE pareckidhene seeseeennk « &heshsee ban 110 Steam Heat, Central, Electric Meter for TE dod cuce cea dhene ee sees ees cxncess 542 Steam Jet Pump, How to Make............. 141 Steam Joint Quickly Replaced.............. 767 Steam Pumping Jet, How to Make......... 141 Steam, Removing Boiler Scale with........ 294 Steam Separator of Pipe Fittings.......... 775 “Steam Shovel, The,” (Poem), by Lydia M. _, RS rs eerae i errr 602 Steam Supply Pipe, Large, More than Mile ee? steam Valve, Wheel Handle Insulated...... 713 Steam Whistle, Prisoner's Escape to be An- nounce ed ER ES i pr pes 912 Steamer “City of Muskegon,” Wrecked on i Cn, occiawhs twa sees haar ane 109 » 1920 53 Steamer “Dumbea” Turns on Its Side in Dry EE Fondo Ove ke wd ae 6 ane ee cei wane bet 196 Steamer, Largest Oil Carrying ngland FO BES ORT eee eH ae 572 Steamer “Laurentic,” Sunken Off English Coast, Diver in New Rigid Brass Suit to Ae eet ean eae hire ae 165 Steamer “Leviathan,” Rebuilt for Passenger EN 24 wkd ah a ete hee eae aD ae Mer mew aia 214 Steamer “Lord Dufferin,” Repaired in 18 860 SI rch docu Se: aie nas shee ck i cic a res A deo stn dha ce Steamer, New Polish, Sails from New York 2” SR aa pee ern 54 Steamer “Ophir,” Returns to Port after ek el ee eee 730 Steamer “Sidney O. Neff” Drifts Eight Days Se Re DO PDs osc ccesccccewesevs 584 Steamer Uses Simple Rig to Load Uncrated CP nn awke tke pa ees eee ee eee 268 Steamship Broken like Reed on Long Island 8 i civdc a cee Mhhhds kad on ee eae bee a Steamship, Funnel of Falls on Deck of SO ES er eee 811 — “Imperator,” Branch of London SS IGS Sat, ins dh dab ens ack ei ee 510 Steamehip, Ocean, One-Legged Swimmer In- DE TR Coa wkkvenphastbe ae ba ewe eee ans 873 Stenseehip Oil Tanks, Portable Force Pump 78 Steel y FEE Chains Poured into Sand Molds 226 Steel and Concrete, Adjustable Pipe Sup- rr i ee 670 Steel and Concrete, Chopping Block Base of 907 Steel Ball, Paper Weight Is.......... cece. 785 Steel Ball Tightens Rivets in Blind Hole... 615 Steel Balls, Hidden, Puzzle Box Locked by. 794 Steel Bars, Tool for Straightening.......... 453 Steel Bridge, Modern, Surprising Amount of WEE Mb ahucddddesateasieanebenetiedbinwe 243 Steel Center, Future, Spitzbergen in Arctic 63 ere Fe Steel Company, Unusual Ore Ships Used by. 708 Steel, Copper-Zinc Alloy Stronger Than. 420 Steel, Coppering Solution for Marking..... 934 ~ ee White Ants Force Oil Men - rr rr are Steel, Enamel Scaling on Caused by Over- EE, Sic Sted oan ees CN ah eee ee 6608 686 Steel for Tools, Seating OF Pe ccs kcsense 460 Steel Gas Holder, Bui ae the Biggest. 33 Steel Gauges, U. S. Bureau of Standards, Measure to Millionth of Inch............ 99 Stes. = -~paa Fashions Receptacle for Street 987 Steel , TY Resilient, for Horseshoe. 596 Steel, High Speed, Forms Point on Adjust- able Lathe Er ere ccoe Be Steel, High Speed, Tool Holder Saves....... 934 Steel, Hollow, a Made from by Cen- ree 404 Steel Ingot Weig - Re Ore 866 Steel Locker or Cabinet, Portable, Houses wean. ee corsets terbeeeeeevenee 103 Steel Mil nglish, Makes Nonshattering Ec babe dedi Obie oe 2 clk wae ea a 547 Steel Mill, Ohio’s Newest, Wholly Electrical 370 — 1 Plate, Bullet Proof, Bank Clerks Pro- 808 Steel, Polish Pe 2. cexssundies bene 29 Steel Rail, Small Anvil Made from...... --- 608 Steel, Removing Particles of from Eye..... 304 a ~y Rifle Barrel, Magnetism Detects. Flaws 51 Steel, Rustless, Pots and Pans to be Made of 650 esis Skeleton for Modern Theatre in ae 673 Steel ‘rank Is Compressed Air Sanitarium.. 845 Steel. Thin, Disk of Carries Twenty-Four PROMOTER TOOOENOD. « <.006605006000408008% 751 Steel Tools, Potato Keeps Cool during Braz- e01 Steet Transfer Bridge Takes Voyage in At- I< 0 vance 00564000d40 0060 6h00R668 696 Steel Truss, Electric Welding Replaces Riv- OO DP 660600665 bede sacennd 4eeucncoapeanne 856 a Turnings, Synthetic Cast Iron Made 90 Steel Wool, Glass Cleaned with............ 127 Steel Wool Heats Intake Manifold for aney =e rere ry reer .- 288 Steering Gear, New Auto Fastener Locks. 406 eran, Combination Desk and Chair en Dr seesdhasatsens be aledebass xt tabeewe Stenographer, Copyholder for, Lights" and Magnifies Ss ncaubiuwe Qpeneneeatees 849 —. and Bumper, Combined, for Delivery ee ee

Page 54

o4 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Stereopticon, Improves etreete ping Light Roll Film Attachment Ss Sterilization, Electric Bath for Dental In- struments Accomplishes..........ccecces Stern, Detachable, Serves as Power Plant for i Pe eesti gsc sete bese ee Stick, Broken, Strong Splice for Stick Depresses Auto Pedals............... Stills, Whiskey. Overtaken by New Law.... ee Pen for Artists Run by Clock- __, SER ee ee ere rane Stock, Live, Corral Construction Methods for Stock Watering Tank, Engine Exhaust DL ccepecdthweneevea ee ewae wae Stock, Young, Movable Pen for............. Stocking, Darning Attachment on Sewing Machine for Stocking Mill, Mangle Cuts Pay Roll of... - Stockings, Lace, Pair of Worth Small Fortune re a ey Stone Abrasive, How to Make.............. Stone and Oak Branch, Simple Anchor for eC SE eee eee Stone Statue, Enormous, Americans to Erect I he ad leat hea at ta eb eA ie Wt Stone Tables and Benches in Colorado CD dna 5x tic eh cede a eecdena th aeee — Tower Erected as Memorial to Norse- SEE, cok Na rastd O50 ee aie ce eee) aoe eh Sh Ob waco ae Stonehouse Guarded against Further Col- read rtsia at lak oR dill 0h aot Ot is Stones, Danish Boats Gather from Ocean RESPEC ERE SIRES Seek “aS aa Stones, Precious—Half of World's Diamonds Owned in United States.................. Stoneware Developing Tanks Speed Photo- _ ea mae aaa er nats Stool Base, Motor in Heips Photographer LS ha od ak ATS wh dve a eca'ee ee wee ‘ Stool, Milking, To Prevent from Slipping.. Stool. Surgeon's Tilting, Has Jointed Base I eI a disk dh dx aE ik & aia Ge enn eee - tor Medicine Bottle Is of Cap Shaped it stistisc Giada eee has 4nek eee he awe Stopper, Spool, for Glue Bottle Storage peepee Automatic Water wutler F SOF .iwses Rs Sis ci dl os 0 ew ace o's & Eh Storage “Bistaneice, Electrolytic Rectifier for EE 40. 5 4a ke! Department, Handles rewerremed ° ee Store, ‘Kéaiton Department, Sells hie” I at Aik SA a ba eee eae aan hee hae Store, Traveling Grocery, Comes to House- err eee len aalatersseony cites Big a teenitgte Storm Damaged Trees, Unusual ‘Operations i <2 sick abe e Vabee keke ska eke & Storm on Lake Michigan Wrecks “City of OLE EE EOE OEE OEE Storm Seeesds in Kansas Subject of Study. Storm, Sleet, Steamship Broken like Reed tect tent eet hah WO Sree ae ewan e ees Storm, Snow, Theater Canopy Felled by..... Storms and Gales, Wireless Warns British nM cc.b 6 Gian ih cob CALG oOe h eee Oa bee ee Storms, Skimmer Clams Tossed on Shores of {RES eee a arent Storms, Thunder, and Lightning. in the Mak- ing, by Rogers D. Ru Stove, “Air-Tight,” Simple Oil Burner Im- ES SIR adage inne alae Acces © id Ww Ae ecg ik Gee Stove, Electric, for Table, Prepares Whole Breakfast ee Stove, Garbage Consumer Built in.......... Stove, Gas, 14 Inches High, for Use in _—— DE: vcctecnbenscaeheanwevrewes ee Stove, Oil, Kept in Bench Top Stove, Pl Stove, | ROS a ae ee ae Stove, Small Oil, Has Kerosene Tank Below ee ee ate on Distributes Heat ee 590 742 731 724 960 30 650 274 127 274 444 451 644 435 Stove, Tiny, Py cabelas awuan see eRe aR SE She ee nosed eade Stove, Toy, Uses Electricity................ Stovepipe Joiner, Pail Used as.............. Stovepipe, Measures Made from Stoves, Cracked, Cement for Stowaway, Belgian Lad Crosses Atlantic nM. cc bbe wade senedaneneee gens Strainer, Installing in Hand Pump Strap Hinge as Watch Holder............. Strap Iron and Pipe Make Gluing Press Strap Iron, Door Catch Made from......... Straps, No, and Many Doors on New London ER rr aoe ae Sid ee ea ee abe aa bata Sin, orale Straw Hat, Clamp for Drying.............. Straw Hat Makes Picture Frame........... Straw, Pad Sleigh with for Ride... Stream, Rafts Used to Convey cE RR a ee ee ~~ Ohio, Small Settling Plants to SN a os htc vie Pca ie dha a Oop Ws SS eth hs as ce no Car, City Operates on Abandoned When Folded Resembles Suit- Fox Hunters Street Car Permits Quick Loading......... Street Car, Runaway, Interrupts Tea Party Street Cars Wreck Law Breaking Auto.... Street Circuit Tapped to Keep Auto Radi- I 5. ce ran Gis ah beac e eb mere eee Street, City, Spouts Fire as Gas Main Leaks Street Corner Grape Arbor in Pasadena. Street Corner Slot Machine Is Mechanical ES SE es es ee ee a icntrer Street, Down Town, Crowds Line Curbs to WEG FIMO TORE OR... cc ccccccccncsces Street Entrance, House Owner Tunnels Hill SS fea Nae ean a AEM ae vee wees eee elea at Street Lamps, Duplex Cut Cost of City Light Street Lights, Floral, Carry Out Idea of Portland’s Rose Festival................. Street, “One Way,” Fifth Avenue may Be.. Street Railway Service, Railless, Planned ad ow A Ube aw 6 oe chad blu eee Street Repairs, New Orleans Has Truck Fitted to Answer Emergency Calls for.... Street Signs Cheaply Obtained............. a | Traffic, Towers on Fifth Avenue Con- A eS Par ne Street Vender, Wares of Covered with Isin- ee aia as ok wib wh abi wib ae ee eee Street Waste, Heavy Steel Fashions Recep- ee ae Streets, London, EE etedicD wih ao 46d hewn esa eee oe aw ea ae Stretcher, Band and Wire, Packer's Tool.. Stretcher, Wire, Made from Old Buggy Top I hte hs ws anid: GAM elec ere a hid dice eA ea hae wo ea Strike, Trucks as Switch Engines during.. ~ on Argentine Farms Burn Wheat to Have Aina ke oo ee See ea ae ok bane Oe String Stops Alarm Clock Signal Stropper for Woodworker's Tools.......... Stucco Applied to Old Church Has Effect NE Singtel aice p< AS nee ke qian eee Stucco, sngnesia, on Mine Timbers, Protects from Fir ce ee ee Students, Ghhnone. Boycotting Japanese Goods, Refuse to Deal with American Company Shipping from Port Arthur, Pn ose nahh hain én be de Wee Oo 0 aw ae o Students, M ade Students, igh School, Build Ore Pulveriz- ing Machine Steteets, uc Mechanical ‘Trades Schooi, Butid Students of Raliroad’ Profession, ‘Scholar: i ie Shae hens ee dine Riis ae kaw aw O38 ae Movie, “Theater” for Is Simple Scaf- studios, Movie, New Lamps Improve Light- Rik ag at teak ates wk ela ainsi thick Oeed< Studios, Movie, Two being Erected in East.. Studs, Eccentric Wrench for Removal of... Stump Burner, Old Boiler Makes Stumps, Tree, Lawn Table on.............. ee Ditches in Garden Eliminated Suemarine, “AA-1." on Triai Exceeds Re- eee eee Submarine Chasers, Navy Offers for Sale. Submarine, Ice Covered, Life Nets Protect ee a Workers on -* 240 . 613 301 . 718 492 592 782

§ on Om

Page 55

420 371 236 542 531 174 622 [88 394 192 Ree — —

POPULAR MECHANICS INDEX, Submarine Mishap, British, Participant Di-

RIES Siti acd. a a Oss Oe ae ae aa a pepe British and German, Glimpses Gubenastnes, British, Use Jets of Water for Ei ee ee Submarines, Enemy, Tracking by Radio, by "i Se See eee Submarines, United States, Knockdown Elec- Re rer tre Substitutes for Coal, French Trying in Face “ -, _ Par rere reer rer Suburb of Ottawa to be Garden Spot....... Suburb, Wooden, United States Builds in 2 ee a rae Subway Coaches, London, Electric Signs on Ceilings Flash Names of Stations on Route Subway Stations, London, Mechanical Guides ee Ee SIN, 3 dc eaves veeeav ence es ae System, City Builds in Old Canal Suction Unloader Removes Contents of Cars in. Wee. GEE, on ct ccaeneesnseva seu Suction, Vacuum Theaner, may be Reversed Sugar, Malt Sirup Is Substitute for......... Sugar Mill, Florida, Nears Hundred and A asco ha wee Nae Joh Sugar, Pulverized, and Sodium Fluoride, Ant DE cobs bended «tia hohe hand wee ee ke Sugar, Rare, Found in Hives of American a ee a peer ae ay Sere Sugar Substitute, Saccharin Dangerous as... Sugar Used by Pastry Cook to Make Model * > Re eer er ere Suitcase, Cookstove When Folded Resembles Suitcase Crib Used to Carry Baby About... Suits, Flying, Modistes Make for Women... Sulky, Child’s, may be Folded in Small, CE: bec cctacnd de senkn i'd ew ees Sulphur Discovered in Crater of Alaskan irks ake etter h bikie dante hie ath ai WE acd Sulphur, Melted, Pulley Repaired with...... Sulphur Used as a Fertilizer SEG Re Summer Cottage, Burglar Proof Windows for Summer Travel, Sledge and Reindeer Team Re ey Ferrer Tee Summerhouse, Lawn, Suspended Table for. Summerhouse, Portable, How to Build..... Sun and Many Planets in Unusual Con- rr aa er Sun Glasses, Argentine Strikers Use to Burn _. > arias ee rs Sunshade, Nonsymmetrical, for One Person. Superdreadnaught “Maryland,” Navy's DEE nk ad chee bns sehen sae he Sappert, Were, TOF PURMts. . oc cacccvcccvaces Surf Board, Hand Crank Propels........... Surf Sailing with an Outrigger in Ceylon.. Surface Gauge on Square.........6+Fcsee.e Surface Tension Study, Preserve Soap Bub- DE Ee . cat veteteasahaeeh 6s ne deeeeaee a sé Surgeon, Appendix Removed in Mid-Oceen Cees Te TEP UUNOE oon sc ccc tee ncsccs Surgeon, Tilting Stool for Has Jointed Base Se SS hoe ods scene enek eee kee Bes bie Sermery-tbeatt Animal's Nerves to Soldiers NN rd Sa ite aon CNRS are ek ag Surgery, Painless, on Conscious Patient.... Surgery, Trees, Damaged by Storm, Made Whole cae een ka ad eee ae ies Surgery, X-Ray and Microphone Probe Used NY nn « srk5a. © Wik ekein ene alee aa's Surges, Peculiar, Panama Canal Locks C ause Surveyor, Splice for Tape of................ Surveys, Climatic, Aeroplanes Make in Cali- EAR a ae eae Suspension Bridge Planned to Cross Detroit | OL FOF errr ores teerere Swamp Land, Missouri, Drainage System to PY tha kme eet eden eee atabakedade Swamp, Locomotive Plowing Snow Lands in Swamps, Drainage Ditches Dug with Dyna- SE SN 6k Gna 22-4 ode dn eee ae eRes CS Swamps, New Zealand, Valuable Pine Resin PT Cc .e¢ne's cae ake 0 tad ee ee rhea we 6 tee © Swatter, Files on Ceiling Killed with...... Sweeper, Channel, for Canal Maintenance Work, by Gordon P. Gleason............. Sweet Potato Crop, Parasitic Fungi Destroy Eighty Per Cent of 702 223 531 799 46 242 527 726 351 1i8 79 688 219 616 720 392 830 596 356 795 757 VOLUME XXNIII, 1920 Swimmer, One-Legged, Instructor on Ocean SE cdéavsk eves inet ehadbadenan ce Karee b's Swimming Aid, Celluloid Cylinder Is....... Swimming Pool and Pavilion, Expensive, Features of Small Nebraska Town....... Swimming Pool, Concrete, Built in Back DE jc knt eek denne és denen enediaetaaeeek « Swimming Pool of Concrete, New Public for ChibGrem, tm TOR AMMONG, 0. ccc ccccccccess Swimming, Portable Springboard for....... Swing, Ball Bearing Porch........cccccecs Swing Bullt in House Door................ Swing, Porch, Magazine Rack in............ Switch, Emergency Railroad, Main Line Left Intact by 648 Switch Engine, Trucks Act as during Strike 713 Switch, Secret Ignition, for Auto........... 606 Switches, Knife, Lock and Protector for... 296 Switches, Three Way, Circuits for.......... 955 Sword and Scabbard, Gold and Jeweled, Pre- TN. kt, arr 421 Syria, Red Cross Tale from Reads like Fic- Dt Sekine ehibebitene sn Kaneda ehh eee oe 38 Syringe and Brass Pot Hold Kerosene for EE WENO Sa we cess aeweetssetentesene 914 Table, All Steel, Folding, for Campers...... 15 Table, Camper's, with Drawers and Shelves Ce + tab wn een ee hada é eee ee 752 Table, Collapsible. Has Revolving Top...... 684 Table, Folding, from Broom Handles....... 958 Table for Boudoir Has Many Uses......... 434 Table for Use in Automobile............... 937 Table, Garden, Tile Pipe as Standard for... 154 Table, Inspection, for Starting Motors...... 720 Table Lamp, Pedestal Makes Floor Lamp of 753 Table Lamp, Shell Casing Makes........... 786 Table, Lawn, on Tree Stumps............... 947 Table Leaves Used for Bookshelves........ 472 Table, Miniature Billard, Built in Perfect EE eg ling win ane bee aeee bane 6 kee wend 280 Table, Old, for Cleaning Stair Walls........ 779 Te, EE CN, cawodae danconsccsacs 944 Table, Serving, Made from Bookrack........ 292 Table Stove, Electric, Prepares Entire oe EE) reer ree 274 Table, Suspended, for Lawn Tea House.... 749 Table, Tailor’s, Clamp Holds and Registers DE MG dnt chwokenitktbbemien bce aah ek oes 360 Table, Tilting. Simplifies Use of Power Saw 66 —, ee Chair Slides like Drawer be- ore COC SSeS SETHE EEE SESH EHH HEHEHE HEHEHE EEE ‘ Table Top, Odd Division, Permits Change of NS ee ae ite ik ads Aen eae aoa ack mie ae 755 Tables and Benches, Stone, in Colorado Pt Pe + ccccnenenkind a eee baba anes 270 Tablet, Bronze with Creed, Placed in Na- St Se bi¢ende cd cheshenetheaen wenn 721 Tablet, Desk, Paper Roll Makes............ 784 Tack Prevents Pencil from Rolling on Slant- " & aeAeiegepea cei ye pe 631 Tackle Block on Arch for Loading Farm PEED: ak deusctdcenenebnakwhesaumedaeae'ee 780 Tags, Auto License, Make Street Signs..... 622 Talloring Awl, Hundred Buttonholes Marked ee a 5 6 ois bs bbe ee nee es euwees 174 Tailoring—Master Patterns Made with i cc cee Ce Oa ke he a ek we 108 Tailors, French, Make Overcoats for Dogs. 34 Tailors, Parisian, Designing Women's Fly- i | oan a ace ake 3 ig nite Oe eatin a eek dee 368 = Machine Attachment Lights Turn- ane ee eer ee ees eeee eee eeeeseeeeeteeeseeeese o — Machines on Ships Advertise Build- ‘7 Sabmnetsid4800b60660n 6h 6060 508 600 068% 4 Tallow. Whale Oil Turned into by Nickel ED I ee ee hs aie aie ee Ame Oe 917 Tank, Air, Oil Well Casing as............... 460 Tank Attachment, Valveless Pump Kept PE EE bbvanché cbc dew siwaaaeke ew eee 856 Tank, Big, to Assure Chicago Unfailing Gas DT wesnen dé taken eisebne tbe kaseeeoeses 411 Tank, Cooling, for Water Systems........... 931 Tank, Hot Water, Wheelbarrow Made from 924 Tank like Vacuum Bottle, Truck Carries |) Pa ran ne a rr 541 Tank, Military, Britain Rewards Inventors.. 250 Tank of Flaming Oil Rolls through Kansas DL <cnccekeaviaestbeenonheteneeees k0:2 068 217 Tank Pump, Auto Operates ...........5006. 606 Tank, Rough Riding, Used in Amusement Pt ccc k eek hk odie A ADEE R NOS bea Oe 113 Tank, Steel, for Gas being Built............ 33 Tank, Steel, Is Compressed Air Sanitarium.. 845 Tank, Stock Watering, Engine Exhaust SE Ghee nvesdecesenesoncecdvvedacsenece 452

Page 56

56 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Tanks, Oil on Steamship, Portable Force I ate aot hele as che a ghoe Hea Rea 878 Tanks, Special Flat Cars Carry from Arsenal 905 Tanks, Stoneware Developing, Speed Photo- i 6 an 5d O86 MON 0 0886660. b ew e8e 705 Tap, Broken, Extractor for.............+.+.-. 620 Tap, Broken, How to Remove............... 462 Tap, Two Way, for Single Electric Socket Permits Double Use of..............05000: 705 Tape, Gummed, and ie: Take Place of Twine On PacKha@e.....ccccscscescccccces 598 Tape, Gummed, Useful in Machine Shop..... 447 Tape, Surveyor’s, Splice for..............+. 616 Tape, Tire, Repair for Chair Back........... 777 Taper, Wax, Light from Auto Gotten by.... 786 Taps, Two Ways of Spoiling................ 301 Tar Depot, Great, in Northern Russia, Fire as nce detent ées es te eg heh eee ees ene 379 Tar on Automobiles, Mixture for Removing.. 631 Tar, 24,000 Gallons Saved by Modern Coke ici dug eins oe cen eab ba dtd ae ee eases oe 430 Target, Comical Mechanism Proves Hitting of 159 Tarmet Shooting Rest... ...cccccccsccccccccece 479 by 2. Income, Payers Report Items of Outgo ene Taxi, “Sidecar, Is French Motor Novelty...... 108 Taxicab, Electric, Has Limousine Body..... 670 Taxicab, Three-Wheeled, Engine of Mounted DT tech cchebabne bbe ed Per eeenseeene's 857 Tea and Spice Warehouse Fire, Falling Walls and Pepper Storm Mark............ 574 Tea Party Interrupted by Runaway Car..... 89 Tea Shipped to Orient in Brick Form....... 253 Teachers, Trustees of Sycamore Heights Sr ear err 908 Team, Pull of Dumps Dirt Scraper......... 747 Teaspoon, Comical Melting, How to Make... 156 Teeth, False, Move Naturally on New Stand 236 = » ned Gear, Device to Prevent Wear- *81 Teeth, Toothbrush with Fewer and Different Arrangement of Bristles for Cleansing of 435 Telegraph, Child’s, How to Build........... 626 Telegraph, © overes Ray, Has Interesting RS oT dae Seis g uke bao 8 eee 649 Teesres “Line Used to Originate Wireless nk e bc atin dk hi OMe h he hb e Whee & een ee 645 Telegraph Office, Alternating Current Used 408 Syegragh Pole, Airman Makes Safe Land- 168 tenant sabe een dk heds 46h wae oo 0 os Teiegraph Sender Works like Typewriter... 386 Telegraph, Wireless, New Receiver for Up- i Ce 4. nehd eanees bab eee ene © 66 Telephone and Wireless, Americans Used to Hold German Divisions..................4. 595 Telephone Booth Rests on Wall Brackets. 704 = Booths, Concrete, Used by Rail- 91: Telephone Directory Holder for Offices...... 596 Telephone Drive, Big, a Community Chest, by Paul ie OEE, ons ns Gaamene 683 Telephone Enables Invalid -* Hear Divine Dt Litentectas td shee vhheac twas eae t 720 Telephone Exchanges, Simple Toll Message NM sce hee heb tO bees eee 4 aeons Aon ke 356 br ag Generator for Electrical Testing CR cat «athe hse Sad ose 6k O62 06'0%'o 8 621 Telephone Mystery, Spectacles Cause....... 57 Telephone, Novel Interior, Has No Mouth- gtece EES i BRP rrr re ae 904 Telephone Poles, Miles of Moved While in Use 902 Telephone Poles, Tractor and Auger Com- bined Plant Quickly.................0000. 827 Telephone Protected from Lightning........ 472 Telephone Sales of Phonograph Records, i Sn \252dsb edhe bee neuss Sapieee 739 Telephone Set for Desk Has Double Receiver 534 Telephone Transmitter Easily Made........ 313 eeene Transmitter Has Separated Gran- 10 Telephone Trouble, Plural Lightning Ar- RUIN 5 \at'ne's (a Sadi ie sce: & aie orp Ma oe oa ce ab 918 Telephone, Wireless Transoceanic, Plans Shown to Be Practical..........cccccccees 29 Telephones, Automatic, for Big City Ex- I ici te bk os 6a wiht eer pie Ace GL 406 by Dey Enormous Number in United sas seeemeee, Halifax, Connect with All United 714 Telephones Link Fire Patrol Stations in nadian Timber Lands.................. 501 Telephones, Wireless, Adapter for Cords of.. 452 Telephones, Wireless, Big Electric Light SUED 6 best adacsccle ste itectubesess 388 ea = Color Screens in Show Contrast- o06 EE ead cckS 6 wah hawk ame ee oo Re 4 Telescope, Nail Keg, Finds Lost Body in PP Serr errr rrr rst srr 762 Telescope, The (Poem), by Lydia M. D Dt vcr lsGpihcavebabedtsanwawakess aad 959 Temple, Strange Mormon, Near Honolulu.... 178 Tenders, Yacht, Fender for..............46+. 767 "TOMES COSTE TBOMMOR. ccc cc cc cccccccccceses 951 Tennis Net, Motorcyclists Get Raccoons with 543 Tent k.. Truck Body, Advertises Owner's Wa Tent, "Hecpins, Canoe Turned into by New Invention ST eA RMOn DEO A Ms 0a keane ee 911 Tenths of Divisions on Scale, Learn to Read 289 Tents, Portable ee ag | and Sleeping...... 943 Tercentenary, Pilgrim, Plans for Announced 692 Terminals, Railway Freight, New Method of Transferring Aids at........-.--.eseeeeee 872 Terraces Add to Farmers Arable Land...... 230 Test Basin, Hydraulic, Heater for.......... 141 Test Truck Used to Demonstrate Autos..... 26 Tester, Cold Bend, Has Automatic a. 112 Tester, New, Plots Life of Materials. ‘ 710 Tester, Spiral, Takes Coal Samples from a ie eatin hauls dame dab eee wae 118 Testing Grounds, Krupp Gun Works’, Used for Agricultural Experiments............ 411 Tests, Aeroplane Fabrics, Machines Used for 704 Tests for Britons Entering Air Service..... 93 Tests for Commercial Explosives, Bureau of SE nc koa ene sco éhbtes eg eve 407 Tests of Gas Tubing Reveal Dangerous Con- +i tether wae ee een ees sees «eae 102 Tests, Official, Improved Aerial Flare Gets.. 852 Textile Industry, Experimental Cotton Mill DCCA Ash dn 06 64a pa Oe eR ae ak aaa ee 861 Textile Mill Floors, Big Vacuum Machines RR eer ee rerry a 910 Theater and sghesnteey. Portable, Health I EY ee he Use ks eke eS oe Re eGo olbre 395 Theater, Arlington Memorial, Nearing Com- Dt: ticncbhebtseadbeens seth actevee oe ss 863 Theater Canopy, Snow Fells in Record — 731 Theater, Colossal German, in Greek Style.. 672 Theater Drop Curtain, Great Mirror to Be. . 506 Theater, Greek, as Soldier Memorial City PD -ptece Dannie de tide Kam dp eke aes @ 407 AIRE EE LEE IE aE ee a 512 “Theater” in Movie Studio Simple Scaffold- st8 Theater: Modern, Log House in Archangel, Dt ca kikiwen eee tabiee’ thames wee ex's 282 Theater, Modern Type, for Mexico City..... 573 Theater, Seen Air, Soldiers Design and i eae cnc aashe Cheha 6s nee 600 gat 736 Theater Seat, Folding, for Child............ 627 Theater, Smallest in the World, by "obert NSP rE eee 552 Theater, Unfinished, Rehearsals Held in.... 11 Theft Alarm, Auto, Sounds When Car is i ich son Pde kOe se bh Ade see das Come 907 bho Protector, Electric, for Automobile one we .. AIOE Bathtub Hammock Aid in.... 564 Therapy, Radium, Application as Cure for i gelccdCat ewe e een hab is enhance bs 76 Thermometer Case, Illuminated............ 303 Thermometer, Clinical, Case for Has Un- PD centhadeeseanbhw kms didae 6ee 8 -< 422 Thermometer, Metal Expansion, How to ET eta ns wih addin ee ee ets apn ds ag.b 04 68 en 156 Thief, Auto, Ingenuities of, by Paul H. EE te es id cs cca eeuceons 386 Thief, Electric Lamp, Catching............. 784 Thieves, Automobile, Methods for Discour- ase Bee ices a kee nh di ewe eal ews bee Thieves, Bullet Proof Steel Plate Protects Bank Employes from...............ese06:5 298 Thieves, Gasoline, Motorists Prey of........ 898 Thomas, Horace E.: Cricket, Coulee, Warring to Extinction... 899 Harbor Obstruction Becomes Shipping Aid 833 Thread, Screw, Projection Method of Gaug- laa an ase 0.00 boomed a4 OKO SA 46 554 Thread Spools, Empty, Make Satisfactory Rr rere eee 450 Thread Tool, Improved, for Lathe........... 457 Throne, Ex-Kaiser’s, Yanks Sit on.......... 76 Thrust Meter for Aeroplane Propeller....... 567 reeked in the Making, by Rogers

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282 573 736 627 552 11 907 928 564 76 303 422 156 386 784 139 298 898 899 833 554 450 457 76 567 30 186 145

POPULAR MECHANICS INDEX, VOLUME XXXIII, Tie, Safe, for Neck Halter.............- +ece O90 Tightener, Revolving Fence Post Acts as. 701 Tile, — Tool for Laying in Narrow see WROMGMOD cecccccscesceacrecreveonvesesssess rile Drains” b neeeaed Buried with Tractor i Pe ton cecndsesacarsevanseernes 561 Tile Gate Ge Small ee PTT eee ee 942 a — and Wall, Asbestos and Cement ser rile. Vasteciorea Glazed, Children’s Blocks ES er Eee eer Tree 440 Cimber, ~ Kauri Trees of New Zealand Coombes TEMG occ cc ccc ce ccccccccccevesese 866 Cimber Reade, Canadian, a by Tele- phone to Reduce Fire Danger............- 501 Cimber Line, Fire Ranger Builds Stone Cab- 2 Se seu kn vd h es tak os eeewe Dawes tems wie 20 ‘imbers Covered with Magnesia Stucco Pro- test Mines frome Fire. .....cccccccscccccces 560 “Mmbers, Crane for Unbolting.............. 453 ‘imbers Graded by Counting Annual Growth DE ncb kad dged cca t.c0 600 ecekevhesieeres 653 = Tree Supported by While Ditch is eee Ne ie aa cine a aaa ae ware ck ea aed a ‘ ‘eer Lamp Shade Rotates and Shows...... 752 Time Recorder, Electric, Operated by Door EEE rere eT ree 366 fe weeree Shop, Slide Rule Figures Time ase a Sie cekah teks cease eee wee ke tee oe eke Timepiece, Twenty-Four Hour, London Sta- Pn ST sab ener ekaa eed 0 0d 68S OSES HO 222 “imesaving Elevator Sign..............+.+.. 456 Tin and Wires Make Brush to Clean Metal REE RP a re ee eee 39 ‘in Cans, Houses in Montenegro Built of.. 895 “in Cans, Ornamental Lanterns from...... 792 rin Cans, Simple Mouse Trap Made am. - .. 780 Sin Chloride Solution, Rust Removed by. 142 Tire, Auto, Repairing on Rim.............. 460 i Automobile, Electric Theft Protector oes Tire, Bicycle, Old Hose as Filler for........ 796 Pe Ce ED BNE, nbc cencetvencenesc 637 “ire, Gas Pipe and Chains Remove from

Pt cingekeh nate aks és eee thea eee 8 137 ‘ire Gauge Attached to Hose Connection... 940 Tire Manufacturers Employ Special Weigh- EE a6 odd dhe COS ae est OW bee oie a8 436 ‘ire Puller, Buggy. Homemade............ 616 ‘ire Pump, Auto Wheel Operates... aoa Tire Repair Shelf for Auto..............+-.: 147 ‘ire Rim, New Demountable, One Nut Holds 2 Oa eer are ee 510 ire Tape Repair for Chair Back........... 777 ire, Wagon, Measuring Accurately....... 782 ire Work, Old Ice Tongs for.............. 457 ires, Auto, Buffing Lathe for Runs on @& |e er oe 63 ires, Automobile, Postcards Used to Mend. 82 ires, Bicycle, Scraps of Rubber Make 0 EE RS eee F 311 ires, Clincher, New Tool for Putting on... 119 ires, Dual, for Auto Truck, Have Nonskid EP rr er eee 77 ires Hung on Chains for Display......... 288 ires, Locomotive Drivewheel, Barner Re- nn: . o sik.4 came x hes Maan oe & wis 187 "oaster, Electric, for Starting Auto........ 455 obacco Pipe, Compressed Air Cleans.. 615 obacco Pipe, Stand for Attached to....... 460 odd, Stanley W.: Extending Galveston’s Sea Wall.......... 398 oilers, Young, New York State Sends Back so alae & aww bind pad bik 86a a 906 ‘oll Message Timer, Simple, for Telephone ET ot sn cas cana wen eer emaad eek oie 356 olls at Panama Canal, Earning Capacity to | 2 SRA rs 99 omato Foliage Effusion Kills Plant Lice.. 137 ombs, Egyptian, Field Museum, Chicago, Rh ha ses bbadash oe Wadd eee Mee 394 »mbstones, Wheat Hides in Rural Cemetery 739 ongs, Fiber and Wood, for Removing sh cwnbu es ao Mc adh Ons abode eats a 381 ongs, Ice, Used for Tire Work............ 457 ongs, Lazy, Airplane Wings Fold Up like 373 ongs, Wooden, Farmer Uses to Pick Up PT ans ween b6 bao 0 tis awk shane eee ses 78 ongue, Shoe, to Prevent from Shifting. . 786 ool Box, Hingeless Cover for............. 465 ool Racks or Shelves, Swinging for Shop. 142 ool, Simple Combination, Adjustable to Many ES shiva avaien «dM ist th eh ine. df tare te. Gaetan a 366 ool Steel, Testing at Forge................ 460 ools, Carpenters’. Pure Aluminum Readily WORE WHEE oc ci cescesaccevecéenacene 300 1920 ~~. Sages, of New Steel Alloy Cast to ES ASE A ea ere rr ete Tools, Pola Files Make Handy Set of........ Tools, Recovering from Deep Well........ Toothbrush and Tooth Paste Case Folds like PT. vac co ctetasesaeeevanai tages Toothbrush with Fewer Bristles Has New ery So rrr rere errirey Toothpick Trick, Star Forming............. Top, Automobile, Disappears in Double Walled DENG ccepssacaetearcddupareeeeese Top, Revetvion. Collapsible Table Has...... Topceoats, British Army Officers’, Firm “De- PE” ons ne naned dee see es tenn eeeepees Tops, Automobile, Cementless Rubber Tops, Folding, Cover Upper Decks of New REE SD 6.6 6.0.50 56 6.000 0.040045 4456405405 Torch, Gasoline, Electric Lighter on Bench PR TTT Tere eriUr ree Cree Torch, Small, Improving Flame of.......... —— to Heat Soldering Copper, Substitute Ey ree Trey eee Tornado Records Subject of Study in Kansas Torpedo, Army’s Aerial, First Authentic RP rrrerr rere or err ere ee Torpedo Boat, Curious, One Man Crew of.. Torpedo Boat Destroyer, British, Has 45 ee NG Es 0 ko 0.00 vegeccccsseasnse Torpedo Plane, Navy's, Makes Trial Flight. Totem Poles in Garden, Curio Collector Has Tourist, Walking Stick and Umbrella Com- bined for Tourists, American, London-Paris Air Liners FO aro ee Tourists, American, War Department As- signs Army Officer to Paris to Assist.... Tourists, Automobile, All Steel Folding MO csp r bear bused nd hae ee eee 640006808 Tourists, Double Folding Spoon for —s - French Open Battlefield Hotels Tourists, Handy Toothbrush and Tooth ey. GE Cs wna rwiah bs0ned tke eae ee Tourists, Switzerland Lures with Bi-Week- £ £. 2) Sareea cer Tournaments, Aerial, of Future............. Towel Cabinet Dispenses Long Strip....... Tower, Fifth Avenue Traffic Controlled die hak Ghd dnd ween te ae ae ae Tower for Concrete Hoisting, Simple Mast DD vc ckhne<cand es dbs ckt soda wukaks Tower, Half Mile High, Planned as War PEE. boca basccncier cade cone ranedanars Tower, Memorial, Dakota Pioneers Build for Roosevelt Tower, 1000-Foot, Brooklyn Plans as War DE. ccLitschbatendeebwks wa hbore ene th Tower, Rough Stone, Erected as Memorial to PEE Scabbccdothobecenbnwndsadeweeae Tower System, Traffic Jam on Fifth Avenue . kt ere ae Towers, Folding Bascule, for Searchligehts. . Towline, Electricity to Eliminate in Marine Transportation, by A. M. Hoffmann....... TOltry Common, Lexington, Has Historic Pe sctuassvicareeebetenbacreaeersaenes eee eee eee eee ee eee ee ee Town, Guat Isle, “NC-4" Marooned Over- SE Ol bs ot bNbeke bb SE Fab wees had nétotans Town, Inland Australian, Camel Team and OE SEE Ci di die wrk 1b 0a bh ate oie oe ac Town of Gontitres, Tractors Move to New Site, Ohi Paul Woodruff ee es rene portable, Dutch Give French........ Town Site, New, Electric Power by Year OD iia 6 ab ate caw hbo 65's ied wa eh aa e O35 = Wooden, United States Builds in Eng- ES nr ae ae ai Toy Aeroplane Cart, Pony Pulls............ Toy Aeroplane Driven by Air Motor Toy Aeroplane Glider, Shingle Makes....... Toy “Airplane,” Child’s Is Sidewalk Car. Toy Automobile, Motorcycle Engine Drives. Toy Balloon Modeled on Military Lines..... Toy Biplane Glider Flown like Kite “+e ee eee ce a Toy, *Mlectricai, Represents Modern City.. be aaa Driven and Lighted Loco- SY dtp o 6b kee Fe nas Od hme ie 4 Wee 6 whee 6 oe ba’ Factory Advertises Wares in Truck quipped as Santa's Home 180 605 456 275 ese 447 458 141 590 442 642 337 524 748 850

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58 POPULAR MECHANICS INDEX, VOLUME XXXIII, Toy Locomotive, Self-Propelling, Made from EE tea aa ooh See 64 6 ba 2 0 ee eS ee 636 ed cea ne hase eee ada aan 318 Toy Monorail System for Children.......... 630 Toy, Motor Driven Aeroplane, Advertises I I i Go 2 06d eka Me we moe ad 6 Toy Motor Truck, Electrically Driven....... 151 Toy, Radiator, Climbs Rod While Auto Runs 755 Toy, Rolling, Made from Empty Spool...... 473 oe Crosspiece for Skating Down- ak hbunb ed ache ed Baa a eae 0 06's bw 6S RG 121 Toy Stove, Electric, How to Make.......... 157 Toy Tractor and Trailers Have Clockwork i icctd ce Rnh Ghee} san'ése+.04.8 oa kee eo Toy Wagon, Delivery by..........ccccccecce Toy Wagon, Mudguards for................. 477 Toys and Furniture, Grammar School Boys ee ee aE Bia © alas 06 6% 'ore 64 Be 6 640 41 Toys, Phonograph Operates................ 793 Track, Circular, Pitless Auto Turntable EN ei ti ies acai Acts re anki aw eine oa! Wilk ele wie 737 Track, Double, Railroad Scales Protected by 742 Track Grinder, Electric, Has Novel Points... 264 Track, Main Railroad, Left Intact by Emer- re mer marae 745 Track, Railroad, French to Lay 18,000 Miles 5 crete ine a ae teeta ee od ende~ eM ae 20 Track Rails, Old, Cofferdam Built with..... 876 Track, Test, Used to Demonstrate Automo- _ . eer Sere eae rer ae 26 Tracks of Unusual Driveway Serve as Drains 687 Tractor and Auger Combined, Telephone Poles Planted Quickly with.............. 827 Tractor and Generator Form Electric Light ES SD Tan nic coc weeesaneeeas 270 Tractor and Horse Combined for Garbage EL sas tas aeiadihla ks SRk aw 6.0 0 ekki 6 Wace a 867 Tractor and Locomotive, Combination, for BOUCM ALFICNM FAIITORE. occ cccccccccscscs 49 Tractor and Scraper, Tile Drains Quickly I ER hia ad aa ia Bilis oe b oh C0 we 551 Tractor and Trailers, Toy, Have Clockwork Motor tieimg Horses Inferiority.....cccccccccccs Tractor, Drawbar Pull of Measured by In- ee rer 531 Tractor Exhibit, Lumber Hills Used to Dem- onstrate Machines at............eeeeee0. 62 Tractor, Farm, Turns Ferris Wheel........ 192 Tractor, French, Goes Backward or For- no hain ss oe eh ae eee b wee Gre ieee ene ae Tractor, Gasoline, Mowing Attachment for. 725 Tractor, Golf Course Mower Pushed by..... 53 Tractor Is Wheeled Frame with Auto on ia ahs dts i vs 4 0 nT alo whsaatle oh cach akin he Tractor, Motor Truck Substitutes for to Save Se ea ea a en Tractor, Rigid Chain Supports without NE atc ring. ey mink aid daw dct eee. ha dee Tractor, Self-Cleaning Wheel for........... 868 ar ~- ya Steep Artificial Grade No Obstacle DP Ute CA 6 bushi dnt io eee ss cee ae ek ee 6 ods Tractor Testing Required in Nebraska..... Tractor Used by Physician to Travel Coun- try Road 6 Tractor Used by Veterinarians in Animal PE nivke te de bb heeds ded cena Gms ae Tractors, American, Interest Turkish Farm- ahi ak te ca cd bcd ado! A th wd ach Gre eet oe var salag a esa ke Tractors, Farm Lads Offered Course in by I er ede he Al aca eine erik ee that wd aces to h'y 0% © 832 Tractors, Flock of Move Army Hospital..... 577 Tractors Pull Sight-Seeing Trains over I Sa 6. oie inne Sets b nas Oe 6ae 6's 66S 717 Tractors, Tin Can Makes Air Filter for..... 138 Tractors, Treadmill Tests by Driving Dyna- mometer 5 Tractors, Use of for Cleaning Snow from SR Es ci nes cd csd Nenkebenuoed 90 Tractors Used to Haul Away Houses Bought a =e rey ere Tractors, Whole Town of Ochiltree Moved by, by Paul H. Woodruff................. 189 Trade Fair, Enormous, to be Held in Crys- Se I 2 6 bc td edens ded er en been 68 en ees Kd 832 Trade-Mark for Rope, Red Core Is.......... 422 Trade-Mark Reform, British Laws Make EE 6 6c eee os dw base senned eee ee eae Trading Posts, Jewish in Africa, Old Letters ES Oe a nvis es teen éa deh eked 814 Traffic Congestion, Fifth Avenue may Be- come “One Way” Street to Relieve........ 542 Traffic Congestion, Odd Plans for Relieving 237 1920 Traffic, Fifth Avenue, Controlled from PT tterecnne Wwh eaten este bes gaa asebweon 5 Traffic Jam, Fifth Avenue, Tower System of Sere errr Traffic Officers, Electric Lights Worn by as PD: Sins ¢ieerasvab eae eke 4 etek iawn 24 Traffic Policemen, Galvanized Iron Shelters Provided for by Kansas City............. “Traffic Policemen,” Twelve-Foot Figures of in Chattanooga Streets........cccccesseoes 587 Traffic Problems, New Street Car Helps ee el Be el SG sb Seite a, aaa 651 Traffic through Panama Canal Increases.... 547 Trail, Bright Angel, Federal Government to see ME SOS SHESSEOCOS EOD ESCH DR OC OR DOR LOR OSS 4 Trailer and Truck Carry Load of Freight ae cia aaa Rw a Oe 0 woe 2 eee ee Trailer, Fitted as Home, Built of Air Craft i cc bnieinis ay edhe ks rsh «seen 6 eee 538 T-Rails, Barrel Skids from................. 605 Trails, Mountain, Measured by Cyclometer.. 132 Train, Armored, to Foil Mexican Bandits... 534 Train of Small Trailers, Flexible Coupling ene are a Train Pipe for Air Brake Has Automatic CEE Ce nanuncin ec reCsanseeete + canenaens Trains, Armored, Figure in Siberian Warfare 344 Trains of Barges, Freight, on the Missis- sippi, by Paul H. Woodruff............... 362 Trains, ye Moved through Mountains i a ns cc¢hahnackund OR etk ce RO Re Tramps, Railways Use Steel Cages to Im- EEE EEF Tee ee i Trains, Tall Semaphore Visible over Tops of 69§ Transfer Bridge, Steel, Takes Voyage in Atlantic Basin Transfer, Freight, New Method of Simplifies 87: Transformer, Portable Electric, Heats CN Rr rrr rere rr re rE rT Terr 54 Transformers, Small, How to Build......... 31¢ Transmission Band Anvil Resembles Wheel. 43: Transmission, Odd, in Truck’s Rear Axle... 27° Transmission, Planetary, of Small Auto, Attachment for Gives Many Speeds....... 44 Transmitter, Telephone, Has Separated DEE ci dvabed reals ncketenetsendcugpeee Transmitter, Seeapmeee, Made from Worn DS OTe rrr 31: Transplanting, Row Marker for............. 95¢ Transport “America” Largest Ship through Panama Canal Transport “Leviathan,” Rebuilt for Passen- ger Service Transportation, Jersey Barge Canal Facili- CROOD co.cc cccusesceces nto OawEe Dawanee eee Transportation, Marine, Electricity to Elimi- nate Towline in, by A. M. Hoffmann...... Transportation Problem, Cleveland's, Motor- boats may Help Solve.............+0.e085 73 ee ee Trap Catches Flashlight Smoke............ 62 Trap Device for Drowning Game............ 47 Trap for Troublesome WasDPS........-.++.++5 95 Trap, Huge, for School of Salt Water Fish Folds in Small Space............s+eeeeeee Trap, Powerful Mole, How to Make......... 78 Trap, Raising of Bait Pan Drives Insects DE. sews Keneedckh sr ddeiieenaewr awed ee 6420 Trap, Simple, Catches Many Mice........... 78 Trap, Simple, Eskimos Catch Ermine in..... 41 Trappers, Protected Beavers Yield Large NS OE oa'n ow 4660500000 64 awe 496409 48% 71 Trappers, Schooner Rescues from Arctic Island Travel—lItalian Dirigible to Carry Passen- gers to America@..........ssce0s Travel, Summer, Sledge and Reindeer Team ee ee ee nO EEO Ss RS eae ee Traveler, American, Betters Balboa’s Time ———e— OO eee ee Traveler, Foldable Clothing Rack for...... 91 Traveler, Little Safety Razor Is Boon for., 19 Travelers, British Commercial Use Warships ere eee 9 Trawler, Electrically Driven, Used by Fish- ing Company 73 Tray, Ash, Copper Invitation Plates Made SN seen tle einen ceVebs ye bbe teens o¥ ete 2 Tray, Ash, for Draftsman............+seee0% 7$ Tray, Picture Frame Makes.............+.. 6: Tray, Refreshment, for Auto Adds to Soda Water Joy Tray, Tilting, Dumps Wheelbarrow Load... 5‘ Tray with Two Pointed Prong for Smoker... 5% Tread, Endless, Attachment for Truck Frame 59 & -- oa I i titi) = — oi fe le A GL ee ee ee ee ee re

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peeeee ker. ‘rame 59

POPULAR MECHANICS INDEX, VOLUME XXNXIII, Treadmill, Bull in Runs Milking Machines... 716 Treadmill Tests Tractors by Driving Dyna- ee errr rr er re TT ee ey 590 Treaty of Versailles Gives Britain Island of - Solid Phosphate ........-ccccccsesscccecs 79 Tree, Ancient Elm, Yields Cedar Timbers. 277 Tree as Derrick Mast Saves Building Labor 238 Tree, Better Mulberry, for Silkworm Diet 190 Tree, Dead, Birdhouse Made of Tree, Felled, Ba Living Shoots of Make Attractive Gar i 6 as aaa webs bas 748 Tree Growth, Dendrograph for Measuring Proves Worth in Service.......-+.+sse0+-. 64 Tree, Large Hemlock, Forest Ranger Makes ROU GE wacrcncdvesecdsncareeasare ee 260 Tree Pests, Mechanical “Gasser” Kills in Cotpee GEOVESD occccccccccccccscesssssecss 66 Tree, Redwood, Squirrel Cage Country Home EE ON, og be ARKO EN UAEAKE SES ES SU EOO SS 279 Tree, Rustic Bridge Withstands Blow from 97 Tree Stumps in Cut-Over Lands to Relieve Paper ShortaGe .......csccccccccccscccecs 56 Tree Stumps, Lawn Table on..........++.+- 947 Tree, Timbers Support While Ditch is Dug. Tree Trunk Makes Novel Plant Stand...... 945 Trees, All Cedars in County Cut to Save PEE: ki6cdae0odtdn onde eRe eaeee ee enwede 648 Trees and Grass as Anchors for Sand Dunes 80 Trees, Black Walnut, Fast-Growing Crossed Species may Replace.............eeeeeees Trees, Damaged by Storm, Unusual Opera- ee ences Oeeh ted anehs Oe wRaS Trees, Dwarf Apple, Planted in Eastern Or- NEE. ised bist piace aa win’s Othe te nee ee he ake 556 Tree. Eucalyptus, Bark of Yields Valuable DE: cadebih Sriteed +000 seen eedodede aap & Trees, Georgia’ sOdd War Memorial Formed by 858 Trees, New Zealand Kauri, Contain Huge Amount of Timber FO PO rem 866 Trees, Portable Band Saw Fells and Cuts... 902 = Towering Bamboo, Line Japanese DEE cv aamuaa ha aie es oad oe hina bid aie baie Trees, Underground Water Reservoir Aids CPOE. OE wt eca eee wennongeesnecetanecoages 58 Trees, Walnut, Methods of Preventing In- SEF £0, POWs occ csccecccovrassevsesaces 59 Trees, Young Fruit, Protected from Pests, by Shields of TE Reape aeons ierlagsse Trench Helmet Becomes Part of Noa Clock 381 Trenches, Garden, Tool for Makin 7 Trenches, Narrow, Drain Tile Laid in by ST ROE conden s skeen ceasenentases cannes 60 Trestle, Blazing Cars on Perplex Fire rer rrr rere Triangle with Irregular Curves, How to cba décbhdeeedsusaeecusctehebeenes ae 615 Ss ee , occ 6 ccndneeses 6000s see as 318 Trick, Card Finding, Pin Aids in........... 471 n Trick, Fork and Glass Used in Performing 154 Trick—Marksmanship by Magic............ 464 Trick, Mechanical, with Empty Tubes, Ex- plained Le tnhed ced 0d Ohne ebddetenneese oe 136 Trick, Melting Teaspoons Furnish Fun..... 156 Trick, Lyne nee en 637 Trick with _ § eer 3 79 Tricycle Automobiles, Paris Show Displays 53 Tricycle, Bicycle Made from The eee 795 Triplet Calves, Hereford Cow Has......... 920 Teee Camera, How to Steady in Wind. 632 _— Is Mount for Household Electric Fe ee i eee 7 Tripod Screw, How to Prevent Loss of. 156 Tripod Support for Stock being Cut ‘by eT EY 5 5 «6 3 nd BS 6ON Rees bes 445 Trolley Car, Heavy, Small Stone Derails... 211 7 Current, Portable Rail Joint Welder PE ee er és 6 Trolley, Dog, ‘Stop Bills .++s2000eeedeeeaedan 2 Trolley Head, New, Hinged Shoe Replaces ES Sits dienes ned e >. 66 4a ane Trolley Line, Commuters Find Coke Mine on 380 Trolley Stops, Wooden Platforms at, in De BEE bss aba ka 0.< 2c oes mae 909 Troops, Construction, Important Service CS RPT Nee eer a Trophy, Handsome, for Writer of Best Busi- CE khaes cd cen eb hws 00s snk aaa Trophy, International Air, American Planes San Se wtesetetiinceesé bsnctaewa ae 959 Trouble Lamp, Automobile, Is Adjustable... 622 Trough, Cold Water, Heater for........... 41 Trough, Long, for Mixing Concrete...... oe Oo Trough, Sanitary Poultry Feeding......... 306 Trouser Le 8, Pressing Knees of........... 44 Trout Fly of sting, —— of Sporting Goods Store Teaches .... - nf a 1920 59 Truck and Trailer Carry Load of Freight Te - ckks sekkeWeesedAdesedeheehedeusrees 204 Truck and Trailer Move Locomotive........ 65 Truck, Army Motor, Is Recruiting Station.. 682 Truck, Auto, Carries Grocery to Housewife's PT Suectvswadbienddaecenetestatevaccnne 812 Truck, Auto Delivery, Combined Bumper eS nos ctr SRO eN ER ea whi ake o hen Sa% Truck, Auto, Has Odd Transmission in Rear i «sc. db0C8 ape a chek eereehinakenee 277 Truck, Auto, Nonskid Appliance for Dual Ee GE ceneaerenscd00 6.4 sagrisaenetendune Truck, Automobile, Freight Car Shipped by 706 Truck, Barrel, from Old Buggy............ 779 Truck Body, Tent as Advertises Owner's RE | cucdcbrtsdet hed Oeursddatieerugaenss Truck, Branch Library on Serves Large PT vcnceadegevened he tekbet ase nea Truck Carries Milk in Tank like Vacuum DEE. Sante covese vod eae eanxeeesspaedse6 Truck, Delivery, Body Built like Phono- graph Case S sli inci ini ice a Wd ln a ek nell dn oa q Truck, Delivery, Resembles Auto and Cycle 346 Truck, Electric, Has Lift Platform 226 Truck, Electric, Moves Autos in Modern GE sen eercibecwestvecsen beeeasoeneees Truck Equipped as Home, Advertising Santa Se BO hs Kot Nd os Hen tena kn 060006 6.02 Truck for Turning in Small Space.......... Truck Frame, Endless Tread Attachment for 597 Truck, Girder Averts Plunge of from DE: cade bineeasecdhieeadews bee escenes ce Truck, Hand, for Towing Auto............. 767 Truck, Hand, Runners Back of Wheels for Moving up or down Stairway............. bi Hand, Tells Weight of Load It Car- PE Acchpithaknentatdseedbandewe Jews bees Truck Has Compartment Body............. Truck, Monster Sign on Advertises Church POR pan dkd buh Ons ee oun etevs end thane e Truck, Motor, Hauls Huge Casting 21 Miles 239 Truck, Motor, Montana's Big Road Program SPE PEE De cnadienendoevcdesenescns Truck, Motor, Removable Power Plant Fea- ture of ee ee in Truck, One Man, Moves Gas Engine........ Truck, Repair for Electric Accessories, Ans- wers Call of Troubled Housewife........ 843 Truck, Seven Speed, Takes Heavy Grades... 758 Truck, Ship's Funnels and Plates Carried by 667 Truck, Small Hand, for Heavy Loads....... Truck, Odd Electric, Handles Large Caliber Shells SS ee re area eee 29 Truck Serves as Traveling Dentist’s Office.. 564 Truck, Small, Contains Living Quarters..... 48 Truck, Small, for Hauling Damaged Auto. 350 Truck, Street Repair, Fitted to Answer Emergency Dt thteresuke kiee ttheepeckes 174 i ee ee OE, isa tnateasnebiens 151 Truck Turns Tractor to Save Wheat Crop. 510 Truck, Turntable on Speeds Lumber Trans- 0 BRS ar arr eee 269 Truck, Two Wheeled, Ladle Lining Drier ae natin Allain peed PR ge Arete 555 Truck, Wooden-Wheeled, Bassinette to be Placed OD. ce chenbed dca nekee ecb hee me pales a 115 Trucks Act as Switch Engines during Strike 713 Trucks and Passenger Cars, Ten Million in Next Year Prediction tcnatiuenees de bwebbs 560 Trucks, Fire, Collide in Busy Street......... 24 Trucks on Runways Unload Cars........... 769 Trunk, Chicken Coop Made from............ 455 Trunk, Doll's, Auto Camping Refrigerator Z Te 666 cone how bth dheke ene nes O0e be & 795 Trunnions, Wheelbarrow Swing on Level... 635 Truss, Steel, Electric Welding Replaces PT cc ebhoe Wee eebeNk ska eeen &o™ a en Cee CO, vc a cccksaedccvased T-Square, Small Drawing Board for Use DEE Batak dnbwe areas beed wheasivnchenaw 32 Tub, Motor Driven Removable Copper, in eS on penne ee bedheres's 6 915 Tube, Funnel, for Engine Oil............... 478 Tube, Inner, New Device Protects........... 114 Tube, Inner, Rubber Type Made of.......... 947 Tube, Mailing, Fastening, Contents in...... 953 Tubes, Boiler, Fence Posts Made from...... 74 "on Berry Harvester’s Hands, Speed or Tubes, Glass, on Lamps Prevent Gulls from Breakin Tubes, Trick, Used in Mechanical Mystery.. Tubing, Brass, How to Make Smaller

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ee eee BO BEE OT OLR OS I

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60 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Tubing, Gas, Tests of Reveal Dangerous eee errr erate, Pee 102 Tubing, Steel, Washer C utte r Made from... 295 Tubs, Stationary Laundry, Live Bait Kept in 946 Tug of War, Electric Engine Has with Cis tended kane te a aaah eae oe, e 5 Tunes, Twelve are Played by Chimes of ES EE ESA RN Ee eye 184 Tungsten and Cadmium, Substitute for Plat- re ls ean whack a amis alee be ee 36 Tungsten Powder, Improved Process for Changing Tungstic Acids into............ 439 Tungsten, Process of Fusing may Increase I raid. ce ai cal tease dh dk 0 mk an Se hid Woe ee 916 Tunnel Edge, Movies Get Altitude Effect . f. See 89 Tunnel for Pipe System, Box Girder on I Se a kn aid at aie wate eae eee dei 758 Tunnel, Forty Mile, to Give Baltimore Its NE aii a aan Oa ae eile ko Ga Bike alee hia ab 08 205 Tunnel, Three Part, for River Scheldt...... 652 Tunnel through Hill, House Owner Makes to Oe SO eae eee 420 Turning, Brass, Chip Guard for............ 462 Turntable for Small Garage, on Ball Bear- et ode eae oki ci RAC wierd ds wha sie de Soe Mal a lca ks Bi 414 Turntable on Truck Speeds Lumber Trans- I hid wide it fe ie Si bos BR ee i 269 Turntable, Phonograph, Illuminator for..... 568 Turntable, Pitless for Auto, Runs on Circu- i in: ws sak Pees aN ae oe ed enemas 4 737 Turntable, Rail Auto Carries and Handles NEL o's. 4a dee etebdeatica sae eh aa ea tered wel 734 Turtles, Frozen, Ship Builds Heated Cabin IE cis oy rien Ele tag hl sre keri SL SVs ecto, w Wee’ wk EN 428 Tweezers Made from Spring Cotter......... 622 Twine, Binder, Stout Rope Made from...... 310 Twine, New Package Fastener Designed as Pt Ci eVinen thon ee ken ddad S08 wa we 598 Type, Korean, Metal Used as in 1403........ 21 Type Metal and Sawdust, Water Separates.. 779 Type, Rubber, Inner Tube Used to Make.... 947 Typewriter, Automatic Telegraph Sender OE ea a eee oe or eee 385 Typewriter Copyholder Lights and Magnifies i iociy italia ili ihe ah tat i eR eSBs we we 849 Typewriter, Music, English Invention....... 650 Typewriter Prevents Check See 608 Typewriter Ribbons, Light Machine Oil Re- DE A veces ciav so CaaS eas kes oA ode 460 Typewriter Ribbons, Office Accessory for I cia ht i ts dy oe ei Oe ee Be 558 Typhus Epidemic, Paris, Poison Gas Used as ND” PPP error eee 725 Typist, Bell Warns of Error on Dictating oe 4.26.64 4 +5n ee ees eae aoe 652 “Uintahite,” Variety of Asphalt, Found in Oe ka cde pee CCD as an ee be o 51 eae wy Makes from Hundreds of POF i ear ae 600 Umbrella. and Walking Stick Combined for TN a Oe rr re errs 434 Umbrella Cover Contained in Handle....... 635 Umbrella, Improved, Easily Repaired....... 804 — Japanese, Catches Seeds from Bird on Umbrella, Repairing with Hairpin.......... 957 Umbrellas, Bone, Beads and Silver Form Pre eee eee 275 Unconsciousness, Prolonged, Violin Music CE ne <4 e teen era meriake seh anewn es ée 222 Unfit, Mechanical Tests Weed Out of British OE rear eee 93 Uniform, United States, Disgrace of Avoided in Ohio Penitentiary. .....cccscsccccccces 208 Units, Interlocking Base, Jack Set Feature... 896 University Campus, Urbana, Illinois, Has Oldest Soil Experiment Field............. 415 University of Texas Gives Course in Water POF ot rr eee 480 University, Special Hydraulic Laboratory SE Peer rere ee rere 664 University, Washington State, Plans Largest Stadium, by Lawrence William Pedrose... 859 University, Western, Teaches Ceramic En- CEE iain 60s ond thened tbs ek eee ene 229 Unloader, Automatic, New Tumbling Barrel CS PROT ee eee 828 Unloader, Suction, Removes Contents of Vessels or Cars with Speed............... 206 Uranium, Pitchblende Rich in Found in Large Deposits in Ontario, Canada........ 381 Vacuum Bottle, Huge, Truck Carries Milk in 541 Vacuum Cleaner, Handle Used for Cleaning PE ch xendd cherie kane a Ono 0 eke own b'e bs Vacuum Cleaner, Midget, Sweeps Floor..... Vacuum Cleaner, Socket for Protects Light PE vkaccdbadew cand ds eee alee deea wees 4 Vacuum in Intake Manifold, New Auto Lamp Pt sin ch ak och Odd Cade ene ane 6 Vacuum Lamp, Acetylene Work Done with.. Vacuum Machines, Big, Textile Mill Floors DAES Re rarer rr oe Vacuum, Partial, Water Distilled in......... Vacuum Sweepers, Portable Self-Winding SE ot cd 5 6d odin ih E08 wa 6 ed Oe Oe a eee eo Is Cabinet of Small Portable Phono- DN Sch ate nde Reaeekbade oie see CaS SOE Valley, Death, Auto Reaches Bottom of..... Valley, Death, Farming in, by John Edwin Hogg 16 ALES ARR REE ARAE SWE h 6 ob ORE ee Valley near Vera Cruz, Mexico, Inundated ESC a es are ee Valley, Obscure, Gas Wells Bring Wealth to ae Adjustable, on Oil Burners Is Fuel Pr ery ee ee eT ee eS eee eT ee ree Valve Cage, Motorcycle, Easy Repairing of.. Valve Cap Forms Pump Coupling........... Valve Dome to Stop Hissing of Steam Radi- SN cn ekss eee eae tac deeeic eebiseacebaceaue Valve, Gate, of Sheet Metal for Irrigation NI iorsthdis eal a aia te thale-tia ght aa arp nels aa ack © he Oiw Valve Grinder Made from Auger........... Valve Grinding, Fine Points of............. Valve, Lever Controlled, for Radiator....... Valve, Motorcycle Needle, Made Adjustable. Mie on Balloon, Mechanic Climbs to Ad- PE £066 26 6eb br 00 6seca eens 4604S 0040 68488 Valve, Push, on Top of Mucilage Bottle..... Valve, Safety, and Gauge Combined........ Valve Springs, Novel Method of Placing....

' Valve Stem, Nonleaking Air Hose Chuck 3 Locks on Valves, 0 ae Per wr Tr er errr rete re Valves, Check, in Pipe 0 ere eee oe Valves, Pistons in New Engine Act as...... Vanes in Odd Gearless Windmill Replaced BE Serre rr rere ee 3 Vapor Bath and Exerciser Combined in New SE Gi mdiatiinn Wain bie pd wih Kobe & 40 4'h a whee Obit Vaporizer, Electric, for Purifying Air..... Vase, Deodorizer Takes Form of........... Vase, Electric Lamp Made from............ Vase, Venetian Glass, Is Deodorizer......... Vaseline, Artists’ Brushes Kept by Cover- i inane ad Che chek ews Kes ee eee 54 Auto Engine, Air Pressure Gauge ¥4 Vaseline, Gas Jets Lubricated with........ 7 Vases, Long Necked, Hot Water and Bits of Ere peers ree ee ee Vault, Burial, and Monument Combined in arr ee ee eee Vaults and Safes, Gas Bomb Shields Con- 6 ok Ke RAAKOMEN NS SS ated che Oe eweeR Se Vegetable Acids, Important, Benzene Yields a Vegetables and Fruit, Any Size, Whirling ¢ nives Peel Wegeeaaen, Spices Valuable as Preservatives Vehicle, Diminutive Auto Practical as..... Vehicle—Odd Bicycle Has Seat over Steer- ee GE i obs ORS EE eked dee ee eae eee Vehicle—One Man Three Wheel Auto Popu- ee err ee eee Vehicle, Two Wheel Motor, Built for Pack- age Delivery Site oe SA ah OM hee Sete eae ee es Vehicles—New Rolling Chair Has Body like ES Gace Johan ons as none’ «eon eeatns Vehicles, Steel Wheeled on Track, and Rub- ber Tired, Same Power Needed to Draw. Vender, Mechanical Newspaper, in National 2 Shield Veneer, ck ha nes oe ne be b5e 08 eS Venom, Why Rob Gila Monster of, by Robt. is Sa nw <5 5 2h vhs Reade ee Vent Pipes, Punnel Has... .......ccccccsees Ventilation, Hotel Doors While Giving Pri- — Permit Ventilator for Window, Collapsible, Direc- SO COP MMA, . oe cece ssccrcsessseege Ventilator, Kitchen, for Homes............- —, Roof, Sucks Foul Air from Build- ee ee Sells Soft Drinks in

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ew in ,eeee ,eeee seen oeeee POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Vermin, Rodents Classed as Accomplish Re- ob canbe eeerereneerd cssrivesasens 500 Vessel “American Press,” Seventy-Seventh to Leave Hog Island Ways........--+..+++5: 437 Vessel, Large Motor, Danish Shipyard CN 5G ek hk Obs COC ERSER EOS AOS KS 741 Vessel, Largest Oil Carrying, England rT oe. cee es OOK OSPR LE ES Ree ol 572 Vessel, New Submarine “S-16," United States Navy LOunches ......scccccccsscccccesece 531 Vessel, Oil Burning, Shifted to Coal in Few Ea errr rey rr ror ree 762 Vessel, Shipwrecked, Dog Carries Line to Pt Me. 5.0 css Cease eee sshehebatetnee se 200 Vessel, Wrecked, Demolished by Waves.... 350 Vessels, American, Now Carry Half of Na- SOE DUED co cccaccss een sisetavedns vere 420 Vessels, Builders Put Phonographs on as pee PTT re ere re eee ee 417 Vessels, 800 Meter Wave Lengths Needed by, to Call United States Stations...... 815 Vessels, Electric Naval, Speedy and High FP EP err ee rer Pere 886 Vessels, Six, Western Shipyard Launches in One Day Vessels, Submarine Chasers, Navy Offers for SE St nk eee baat CREA AREER OO Oe eae 911 Vessels, Submerged Induction Cable Steers fl RSS ae eee 515 Vessels, Whirling Window on Gives Mariner Clear View Veteran, One Legged, Expert Ice Skater... 536 Veterans, Blind, Instructed in Core Making. 411 Veterinarians, Government, Use Tractor in SEE. DEEMED canes tatendwaasteéasane 200 Viaduct, Ponderous, Moved Eighteen Feet. 532 Viaduct, Railroad's Name on Assists Motor- Se nD +6 casero hens sabe oe deka ae 225 Victory Medal, Design for, Accepted by Gov- ES Src ak atid Or ns Se ade Oh Ce bee 345 Viking Ship, Chicago’s Famous, being Over- DE és beans ocecsen Fe Opbhe tbe Rha dea ea wah 404 Village, Grand Pre, to be Restored by French ern rrr 202 Village, Model, Trinidad Asphalt Workers DCM 5 io dv caida cn biees amen ae ee Maes © 644 Village, Portable, Dutch Give French....... 875 Villages, Remote, Alaskans to Purchase Sea- Oe CE viwwni he sounds ede aebdeeee eee 902 Vinegar and Cornmeal Remove Stains from cn nu s'8-6.44dd i AONE EA Rea Chae ene ® 451 Viol and Bass Drum, Combined, New In- RT = Si eS a a 678 Violin Bow, Wire Clamp Holds Beginner's, in Place Violin Music Cures Prolonged Unconscious- RE Pe er ree rnrras Sane 222 Violin Scroll, Patriotic Emblem Replaces... 759 Violin, Wasps Build Home Inside of........ 691 Vise, Bench and Hand Drill Form Drill Press 474 i Se, SE Es on wis wbwa ea bande sem 797 Vise, Clothespin Used as.............cs00. 132 Vise, Holding Rough Work in............. 295 Vise Jaws, Graduated, for Milling Machine 126 Vise, Jig Holds Small Screws in........... 633 Vise Made from Wringer Clamp........... 792 vee New Bench, Pistons Handled Quickly Pe sks bane 00 0 86RE0 Ade aes bee ees ae be ee 392 Vise of Unusual Form Has Many Uses..... 244 Vise or Clamp, Pneumatic................. 446 Vise, Shaper, Tapered Work Held in...... 942 Volcano, Extinct, in Hawaii, to be Site of Army Recuperation Camp................ 186 p Volcano, Mauna Loa, Fire from Illumines EY IN oda obo nn dik duasia nee 6% 32 Volcano Pours Mud into Mexican Valley... 750 Volcano on Unalaska Island, Sulphur Dis- OO e Oe SO ho nak socchceentsesnce 165 Vote Counting Made Public Spectacle weerrr 746 Voyage, Long, Drifting Wood Block Carries eee i ee OEE res eS en 696 Vulcanizer may Serve as Torch to Heat DE SO bnkceaekGucdexcexnesada 41 Wagon Axle as Gate Hinge................ 137 Wagon, Coaster, Auto Starting Motor Pro- pels i Wagon, High, Converted for Silo Filling.. 132 bat =" Loader, Automatic, for Difficult Ma- ET Rep See Ee ee 895 Wagon, Police, Bolivian City Has Office for w e p—. yer Vibe Ghseed ea wa -- 524 agon re, easurin ccurately........ 78 Wagon, Toy, Mudguards _~ Serta Joueesue 477 Wagon, Toy, Used for Delivery............ Wagon Wheel and Barrel, Poultry Table ce ee rrr ree Wagons, Farm, Arch with Tackle Block for BME ccc cac es ereeacavessenentsoeneesc Walking, Old Notions about Upset by Tests OF BiimGfoldeR POrSORS. ..ccsccccscvseses Walking Stick and Umbrella Combined for 0 Sree rrr rrr Tr rrr rr Walking, Wheeled Frame Teaches Cripples. Wall and Pipe Tile, Asbestos and Cement cide ateee ce Cres bihs beens se see we Wall Brackets, Telephone Booth Rests on. Wall Cabinets, New Dental, Tools Grouped COMPORISMEE GH ccc cscccsccecessacscoes Wall Clock, Trench Helmet Made into Wall Closet for Ironing Board Wall, Doorn Estate Curios Now Hidden by Wall Molds, Concrete, Change Shape for ON Sr er re rrr eee Wall Paper, Old, Spraying Removes...... Wall Paper, Removing............s+eeee08. Wall, Sea, Extending Galveston’'s, by Stanley W. Todd Walls, Factory, Ignited Metal Dust Bulges.. Walls, Falling, and Pepper Storm Mark ll errr ere eee Walls, Pneumatic Spray Waterproofs Evenly Walls, Retaining, Railroad Uses Concrete lI- Ph Ml ts ck bd che tise bad eeSRae eres oes Walls, Stair, Old Table for Cleaning....... Walnut Sacks, Electric Iron Rids of Codling PE : -..ccktnite er bks od ede teuentee ceyewe Walnut Trees, Black, Fast Growing Crossed Bpecies WIRY ROPlACS...ccccvesscccsveccess Walnut Trees, Find Methods of Preventing RE OE oc ec reece eecbas SOR + RED hd b0é REED Walrus Hide, Polishing Wheels Faced with War Brought Better Knowledge of Physi- FE ge SS arr ee War Department, American, Has Army Of- ficer in Paris to Assist Tourists War Devices—Electric Sentinel Detects Heat i: i Cs vote ehiwe he OOS ee ees Oe War—French Used Angle Measuring Peri- scope to Direct te mg | Fire War, Important Service Ren Se “ROO Bs conccccacvscecsceoneses War Memorial, Arch in Livingston County, Pt PE cavttbs seaeeab sees bon dase se eek War Memorial, DT Tre eee War Memorial, Georgia's, Trees to Form... War Memorial, Hall Built for, Has Many dered by Con- California’s, to Resemble DE Ct sdecaethveeinttetineetebbheaaesauees War Memorial, 1,000-Foot Tower, Brooklyn PP DM wprathsota tse 6eddh ene these thee sah War Memorial, Tower Half Mile High Planned as War Photograph, Night, Comes to Light... War Risk Insurance, Government Makes BGs PEP ROS BOP. sccksccscecccses cess War Salvage from France, Governmeuts Plans to Use in Construction along Mexi- Oe Dn cicecndsschshOece as eevnveen dene War Signaling, "I ~=2]" Se Perper er War, World, Geologists Aided Armies in.. Warehouse Collapse Averted by Unusual DS ccpiddenceba senda oedde eenevaeese Warehouse Door with ee ES eee Warehouse, Tea and Spice Fire in, Marked by Falling Walls and Pepper Explosion. Warehouses, Eight Wooden Japanese WUOMIMOOTD UOOE GBe ccccnccscccsscceseces Warfare, Siberian, Armored Trains Figure ee ee ee ee ee | in Warfare—Torpedo Plane Is Future Navy Weapon bad ~ Chiefs, Arabian, England Enter- ND hia tae Sie ic thin 0h oo wo 0th A dh ws an de Warship “South Dakota,” Largest Ship to Enter Papeete Harbor...........00eeeee08 Warships and Their Wireless Systems, by Samuel » Si eccteeedeeerestnesesseee Warships, British, to Help British Trade.... Warships, Plan Channel for, at San Fran- tt De cin dncabataskeutwewt saweneen Wash Boilers, Copper, Reinforced Bottom for bel Bottle, Mechanism Operated by DE se stab the bc kdcse hen vce wekhe wowwes 780 416 434 120 897 704 116 759 731 909 514 858 640 882 502 537 41 54 405 322 579 674 850 344 222 263 266 231 98 438 941

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a A MOL ETT, A —_ = NY OLE EY « pes 62 POPULAR MECHANICS INDEX, VOLUME XXXIII, 1920 Washer Cutter Made from Tubing Washers, Thin, Hand Cutter for............ Washing Machine, Removable Motor Driven Ih. SPR oe eee Washroom, Public, New, Towel Cabinet for Washtub Is Home for Chicks............... Washtubs, Kitchen, Enameled Steel Drain i. Ah | SSP RRS peer Wasps Build Home Inside of Violin Wasps, Troublesome, Trap for “Waste Baskets,” Street Corner, Heavy Steel ED. Cine cee he pire Minded We 6 aika'e ds Wasa awe Waste Pipe, Noisy, Silencer for............. Watch Holder from Strap Hinge Watch, Old, as Speed Counter.............. Water, Animals Get in Novel Way.......... Water Bag, Hot, for Cold Weather Auto DE cp tthhnd dee Ries beh Shas eh on oee Water, Bees Provided with................. Water, Boiling, Corks Renewed by......... Water, Cadence of Running, Explains Sing- ££ % SERN ep errr bef 4 Cart, Pipe Sprinkler for Bridge Elim- Ee ti ce Oe Od a ke Oh eo ee 48 ele Water, Clean Spring, for Camp............. Water Cooler for Restaurant, Float Valve OIE CCE E ST Cee eer Craft, Small, Hand Driven Propeller ee ey Water Craft, Subsurface, Hand Crank Pro- ERAS RI i reg aE CE are Water, Column of Transmits Power by Im- Rr an ere er Water, Distillation in Partial Vacuum Water, Ditch, Filter Clarifies............... Water, anal igs 7 from Lake Far Below..... Water Faucet, Packingless, Made in Sweden bag om Filler, Automatic, for Storage Bat- DE okt bi cb Ohi edn ie SAE CaS ARSE DOO Water Filtering, Model Explains to Minne- i ct ali circ tN dese oe Cas wamald Water Float, Leveling by.................. — Flow in Irrigation Canal, Worms Re- DD. 45. 34 ecdnewe ero be@eeeshousenasaeedewe Water Gardening a New Floral Industry, by Es 6 6 Sadceeevecncteonasoss Water Gauge, Reading of Made Easy Water Heater Burns Kerosene.............. Water Heater, Engine Exhaust............. Water Heater, Gas Burning Instantaneous. Water Heater, Gas Flow to Stopped When FS Sarr ae rere Water Heater, Gas, Hot Water System Oper- wie thi ats ane hebbateeaeanedéexee es Water, Hot, and Bits of Paper Clean Long rae eran aac eter Brag tie Water in Compressed Air, Alcohol Keeps EE an bo aia dda d awe ee weed ewes & Water in Dishpan Lessens Odor of Paint.... — Meter and Curb Cock Housed in Oval SP UEC e AGRA Dwar t.Aae ne eae keh hd ate ewe © Water Mirror, Huge, Mit inde 6 abt bei aie eddie eRe e Cabs bao e Water Motor, Paddle Chain................. Water Pan and Dust-Catcher on New Hot SE a ee eee Water Pipe, Stone, Found in American Wil- ie id tcntetleh Sie Sind > nicl a daar cr a ain 8 wae oe Water Pipes, Hot, Corrosion of Prevented by I a i ni ens ah dl mide ecw a Kd oo 9 Water Power, Spring Furnishes............. Water Pumping Station, Artistic in Western ee ee ee PEO RS eer ee year Water, Pure, Drinking Fountains Supply A a oklaa Ss. ache ace So alta ale 6 Based aie Water Purification — Miniature Settling Plants for Ohio Streams Water Purification, ee MERE WOU. i aw diw'ib io de ew She oe Alea Water Reservoir, Underground, Aids Growth | Re ere re eerie Water Seals Keep Air Out of Annealing Furnace ee ee ee ee Water, Seepage, Wells Draw from Farm _. MeL ATU LUMETE ULTTELTTTTT CNT TT ee Water, Self-Closing Drainage Gate Con- eG Er ees Serre ee Pri Water Separates Metal and Sawdust Water Skis, How to Make and Use.......... "a, Sport—Canoe is Shown as Versatile 8 bak Oa RA aah ee Be ek te Ce ave oe Water Supply, Baltimore’s, Forty Mile Aque- INES S's: & dhs b's sich. a Nk & al Water Supply, Household, Tiny Electric Unit Heats ee ae a a ee 284 305 436 69 68 274 268 232 625 257 395 651 480 458 505 171 $83 628 35 205 Water Supply, Twin Falls, Filtered by Mod- SEE heb chee es ARKO Ae ee bee eee 725 Water Surges, Peculiar, Panama Canal I is ay sar etcineh sain ph sh a A Oa 219 Water Systems, Cooling Tank for........... 931 Water Taken to Naval Station on Barges... 6838 Water Tank, Hot, Wheelbarrow Made from 924 Water Tanks, Forest Rangers Use Hollow 7S ae 76 Water Telescope, Nail Keg, Finds Lost Body 762 Water Trough, Heater Keeps from Freezing 285 Water Troughs for Dogs and Drinking Fountains at Base of Park Lamp Post.... 644 Water Tubes, Rotating, Feature of New High Pressure Boller. .......ccccsseccsees 338 Water Wave Formation, Simple mogaees ROU L Menta eke Oe ose in en bee Bae ee tke 802 Water Whee!, Rustic, Lincoln Park C onser- vatory a ce a ec ale 908 Waterproof Shell Used in New Life Line Gun 429 Waterway, Inland, may Link Mississippi and Ec led en ka A A Be hue ee eS 221 Wave Lengths, All, Motor Controlled Receiv- BO ED Ate aka Ota eA DRED REORDER S 4 5404 538 Wave Lengths, 800 Meters, Vessels Need to Call United States Radio Stations........ 815 Wave Motor Has Ingenious Clutch System.. 37 Waver, Women’s Hair, Made of Linked OO eer eer re rere 802 Wax, Sealing, Earthenware Mended with... 477 Wax Taper, Light from Auto Gotten by..... 786 Weather Bureau in Kansas to Study Tor- ES rr ee rer rrr err 590 Weather Bureau Plans for Boats to Chase PEE Vthiwkehacs beta cece eee ee oem 64 Weather Calendar, Chamber of "Commerce i ntbididel shin tga tbenheb +i 08 606% 644 Weather Vane Made like Aeroplane........ - 150 Weaving and Spinning of Glass............. 467 Web, Spider’s, Experiment with as Substi- i ccth inh cebee ss obNe aa 6 eine 6 as 336 Webbing Handles Urged for Heavy Boxes i Cy, én ane bid eh don tedsnh64b0s40 6006 356 Wedge Instead of Nut, Threadless Bolt for PC keh db on ede VOeME ad es O60 +0-e mae 583 Weeds, Fender Turns Under While Plowing 609 Weeds That are Making Good, by R. P EE nie Ge: atib es O46 won eee e eps 4006 6.0% 249 Weevils, Solve Problem of in Australian _ = err reer 401 Weighing Platform, New Hand Truck Has.. 436 Weight, Paper, Steel Ball as............... 785 — Raised by Windmill Operates Dyna- see Wolghte Change Shape of Cattle Horns..... 90 bet 4 Aluminum, Inventor Claims Success are ls Ae bada Adee rs Rap Ee tbat cane binge Welder, Compact, Three Phase, Handles SURGE MOM 566 00ccrcvicsecesssseseverzes 246 Welder, Electric Arc, Ornaments Drawn by SS SS ES Seer 432 Welder, Eyeshield for Supported by Harness 74 Welder, Portable Rail Joint, Uses Trolley il i eek ih hoe a a gh Si es eA ek ee wh 368 Welders, a Fiber Mask for Protects Face Lede bt abebs mbie meas ws 4-08d% 2 390 Welding, ” {steponeus, Inexpensive Lead Burming OutGts for ....cccccscsescccvcces 351 by Electric, Rivets in Steel Truss Re- ese PU ca bccsvdebes acied SEROhSEe seat enns be aes 7 eT New, Has Chemical Coat- ses Walking Equipment, Portable Locker DE Cictacns areas dabhawecneeee van ae ees 103 “a oom Lamp for Acetylene 929 Welfare, Employment, Factory Yard Demon- CEE BG cab weeks See Sheer ve dnseccreeesue 374 Well, Cool Air Issues from..........-..006. 74 Well, Deep, Recovering Tools from......... 456 Well, Double Chains Raise Piping from.... 950 Well Drilling Machine, Compact, Blind In- WE EINES ce decceccdccesescseevece 68 — Water from Supplies Drinking Foun- o Wells, Deep, Reclaim Desert, by Frederic EE. 6 xviks Ca ANG Ras 64.06 665.048 5659 0 0945 715 Wells Draw Seepage Water from Flooded Ed wa wie ses i 6ghe ae be ebases 171 bef = Gas, Bring Wealth to Obscure Dis- 38 walle Oil, Shales Will Substitute for When Run Dry, OS ara Tee 561 Wells Several Hundred Feet Apart Operated by One Windmill... ..... ccc cece ccc eeeeees 2 wa sz

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725 219 931 924 76 285 544 338 802 908 429 221 815 37 802 786 590 785 636 90 276 246 432 74 368 390 351 856 868 103 929 ¥ 456 950 68 37 715 171 735 561 291 =

POPULAR MECHANICS INDEX, Whale, German Auto Takes Form of........ Whale Oil, Nickel and Hydrogen Turn into TOTO cc ccccccccesecsesesceccvcesecsecoe Wharf, Bridges and Platforms Add to Ca- ac as kta etnies eoeeeees whart Movable Platform on for Unloading ee BFACUB ON ... cece ccccccscceseesccserece Wheat, Australian, Solve Problem of woes CeCe EESHHSSSEHSHESS SSO SHSOHOOSSFOSHESESHEES eee eer eres eee seesresreseseeseeseeese tribution Among Farmers.........-+.---+- Wheat Hides Tombstones in Rural Cemetery Wheat Smut, Drum Rotated in Hot Water TRAM 00 cccccecrdscesecobessbesessaesss Wheat Stacks, Striking Farm Hands in Ar- gentina Burn Wheel, aoeaee Holds When Axle Shaft is . Broke eOoe eee eereseseseseseeeesEesseeeees 233 739 502 Wheel, “Automobiie, Tire Pump Operated $3 SEPT Terrer eT iY Tt Tt Wheel, Discarded Cultivator, Farm Gate TE UN noo 0ko-ebe et esigdnensevsseawes 296 Wheel, Self-Cleaning, for Tractor........ 868 Wheel "Handle, Steam Valve, How to Insulate 773 Wheel, New Measuring, for Accurate Work. 836 Wheel, Transmission Band Anvil Resembles 432 Wheelbarrow, Level Body............+ee0e. 35 Wheelbarrow Made from ot Water Tank.. 924 Wheelbarrow, New, Has Two Wheels Acting Pt Ce. steno sea nere ad Rade enon ee Wheelbarrow, Tray Tilts to Dump Load. 595 Wheelbarrows Eliminated by Compartment Body Truck ......ccccescccccccscscccceces 63 Wheels, Air Cooled Motor on for Many Farm ese i chgeh dt taebeawhines en areas enews es Wheels, Pivoted Front, Perambulator Purwek Wassily With. .cvscccsccsscccsscsnes 115 Wheels, Polishing, Walrus Hide Suitable for 731 Wheels, Shopping Basket for Children Has.. 761 Whisky and Camouflaged Tipple Overtaken WF TIO BM. occ cccc cess cdacestvesecovecs 60 Whisky Masquerades in Funerai Garb. Parr 59 Whistle, Steam, Prisoner’s Escape to bes pee, reer ive 912 Whitewash, How to Make...........+..4.:. 285 Whiting and Linseed Oil, Iron Rust Pre- MOREE DT ns ccocevecctavedteetesoar soccee BOO Wilcox, W. F.: -— Will Supply Oil When Wells wae sei Stocking Mountain Brooks for Anglers. 689 Winch, Deck, Boat’s Main Engine Drives. 889 Wind for Movies, Airplane Propeller on Auto rr rere Fer -- 906 Wind, How to Steady Camera in............ 632 Wind | Instrument, Little, Played through 40s wind, ® Parachutist Carried to Death in River en1 Wisdrniil Accessory Has Planetary Gear “Ar- SNE 4.00 655000 400s dake edhkendedee e 273 Windmill, Odd Gearless, Canvas one -_ RE EE Mine ak65e a0 chose % 332 Windmill Sign Made from Bicycle......... 929 bel em Two Wells Several Hundred Feet part Operated i (660 tbeaeee ead eaesee @ 291 wind, Weight Raised by Operates Dyna- sae windmills, Design of Aided by Air punpener ase Window Boxes, Brackets Fasten............ 798 Window, Car, Railroad Grade Indicator At- re ere aa 894 Window Cards, Self-Supporting............. 774 Window, Clothesline Operated from......... 763 Ww indow, Collapsible Ventilator for...... 134 Window Display Is Forest Scene......... 585 Window Frame Makes Clothes Drier for te GN, wisc bata ee hand <Kebwesieeadwe 638 Window Grating, Removable, Raising of DP POE .icctdenewewbde bakwus seca eden o 229 Window, Homemade Stain for.............. 135 Window Panes, Broken, How to Replace.. 466 Window Regulating Device for Closed Autos 594 Window Screens, Double Mesh, More Durable 135 Window Shade, Springless, with Cord....... 593 Window, Show, Automobile Tires Hung on Chains Displayed ites = sesndunakswe<'e 96 66 288 Window Ventilator Works Like Telescope... 262 Window, Whirling, Gives Mariner Clear Pee eee ET Pee ee ° 665 VOLUME XXNXIII, 1920 Windows, Bureglar-Proof, for Summer Cot- COMO cccccctccrenecocsrcreveceeesserecsocs Windows, Show, How to Prevent Frost on.. Windshield, Auto, Mixture for Cleaning..... Windshield, Automobile, Application of Chewing Tobacco Prevents Moisture on.. Windshield, Automobile, Extension Arm i TE 65 cou cnd6hebgs 0d pe bisbevave ba ap Baby Carriage, Is English In- De Sito ecdcecdak hades beueee een renade Windshield Cleaner, Pads of Hold Chemical ixture ee Windshield Cleaner Quickly Made.......... Windshield Spotlight for Auto Is Combina- tion Head and Tail Light................. Windsor, H. H.: ee ee a erred Oat REM Od 0 Oe Get the Worcester Spirit Government in Business Keep Them Going Old Clothes Club GE Eee eee eee Packing House Discovery, A POU GE POTOGR, Bic cc cc ccsccsssesecse Produce More or Consume Less Reforming the Radicals............ese+0: Saving of Wasted Energy ee Dc neces 6seecceenses es What Belgium has Done................. Women Become “Draftsmen”............. Windstorms in Kansas Subject of Study.... Wing Adds to Surface of Desk............. Wire and Band Stretcher for Packer........ Wire, Broken, High Tension Leaves Indelible Re reer ere Wire Clamp Holds Beginner's Violin Bow ey En Hib tans nb Chea BOS e068 0a b Adda et 0 Wire Coil, Shell's Velocity Gauged by Shoot- TE ka a ead iene rdw nets use os Wire Connection, Right Angle.............. Wire Contrivance, New on Umbrella Makes nd a. cae et he eeh kan pads ¥e0b eos Wire Cooking "Brachet & 2. - sae Wire Drawing Device, Simple............... Wire Fence Post, Revolving, Acts as Tight- SP Ee venbins ve cheb bieead Oda dase Wire, Fine Platinum, DN: Cikertavee en wdkadveGheke hokace een Wire Frame, Print of Butter Cut on Wire Guard for Notebook or Purse Wire Hanger for Seed Corn.............06. Wire, Heavy, Splicing Smoothly Wire Joints, Ladle for Soldering eee eens Wire Mesh, Poultry Feed Wastage Pre- SE sh akacaacebne Sandee seeneesbeoese Wire Teetl, Dwell Made SFOM. oo. ccccccccscce Wire Netting and Broom Handle Make i Se cc citnawanaeehen See eawe & Wire Rod, Stiff, as Drawer Lock Wire Screening, How to Stretch Wire, Single, Guides Multiplex Radio’ Te- DEY qcitiwe bund wna ebe obla dae eee ed % 0.0 Wire, Spring Steel, Makes Simple Snap Wire, Square, Holding | - ae Wire Stretcher Made from Old Buggy Top Dt Liha thnitds aban cahta hehad vaeeas weal Wrarw Bemere Gel PMG. sc ccc cctsccsccsccs Wiring, Electric, Test Connector for Wiring, Electrical, Emergency et I kn an cannes b heth me bw ee we aks wens Wireless Aerial Connector Block, How to DT n2vensvivibekatsaceieeekheansneoenaee Wireless Alarm Bell Gives Relief to Ship NN OBO rrr eee Wireless and Telephone, Americans Used to Deceive German AFMY .....cccccccccccces Wireless Amateur, Instructions Received by Mi Kaveh bie ct heeet ated reenedens seen Wireless Antenne, Human Nerves Act as, by F. L. Brittin eee ewe ewes Substitute Wireless “Beacons” May Replace Light- re Fea paren Wireless, Congressmen Wearing Headsets SPST rT error rere Wireless Control Returned to Private Own- ie Coie. oe owas aie ee eee aa Kee aie eee Wireless Controls Army's Aerial Torpedo... Wireless Equipment, Many Improvements in Wireless, Instructor of Gives Concert by... Wireless Instruments, Bureau of Standards WE TE has 6 cove ncaa shgheteeedssceabacne Wireless Masts, Germans Use Wood to Make Wireless Messages Transmitted to Belgium i BA DENS 00:04 69's 4 bbs bet ese heen eaneaws Wireless, Operatic Airs Transmitted by..

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ae a re mee

64 POPULAR MECHANICS INDEX, VOLUME XXXIII, Wireless—Perhaps Mars is Signaling Earth, by Paul H. Woodruff “Wireless” (Poem), by Josephine L. Peabody ae Receiver, New, Old Theories Upset | EME a ae re er Eee tae Wireless Receivers, Motor Controlled Take ADL Wave EMBERS. 2. c ccc cccccccceccccess Wireless Receiving Set, How to Make at OE a errr re tre re ee Wireless Sending Station, Large New, Japan Opens Wireless Sends Music in All Directions...... Wireless Station, British, to Forward Weather Reports to Airmen Three Times SS Perey ye rr herr tr ere ee ee Wireless Station, Largest, Navy Built at Bordeaux...............66.. Wireless Station, Motorized, Merial Mati Terminus... . .ccccccsscveseces Wireless, Submarines Tracked by, by Samuel Di ED -tamekbetaad wee ss ees eke Kok aae tes Wireless Telephone, Transocean, Plans Show 7 “ 3 Seer eerie Wireless Telephones, Adapter for Cords of.. Wireless Telephones, Big Electric Light Sys- EY GE Ess os wwii nds es Rae edge ced 4 abet Wireless Telephony, Multiplex, Guided by Single Wi Wireless, the Warships, by Samuel W. Beach —— Troubles, Wire Loop on Submarine VO er er fo Wireless Warns British Ships of Threaten- SSS ere eee ers Tiree Wireless Waves Vary Growth of Plant Life Wires, Electric, One-Piece Armor Protects. Wires, Underground, Portable Electric TEES no 0- Kekd coed ba e Wood, Dyes Used to Stain...............2... Wood Inlaid Work, Imitation............... Wood Lever Tightener for Bucksaw. Wood Lot, Farm, Experiments Seek to Prove > eee: “eae “ery by - 8 Much, Used in Building mepppein Steel r Cr | ee Wood Bubstituted for Iron to Make German I CN 6. vs wig oe Ganbb0 446 iseues une Wood Waste, Distillation of Aided by Odd Machines ee ee oe ee 495 495 66 538 128 863 322 109 867 1920 Woodruff, Paul H.:

Floating Freight Trains of Mississippi... 363 Gas, Use of for House Heating........... 819 Hydroelectric Engineering Feat in Far EE cnin ss 2a Saino ae Ode se ele 06 ed 0 71 Ingenuities of the Auto Thief............. 386 Perhaps Mars is Signaling Earth......... 495 —— Drive, Big, Fills Community ess Whole Town Hauled to New Site by Trac- SRE Sr err rer Pree 189 Woods, J. B.: Lumberjacks Who Live on Houseboats... 727 Woodworker, Stropper for Tools of......... 782 Wool, Artificial, Wool Scrap and Cellulose i Leh aie htt s maken dbhee 6h ea ea ae Ae 546 Wool Goods—New Material Made of Short Silk Fibers as Substitute for.............. 73 Wool, Grease Extracted from by New Pro- hie ee ee oe Ok baie Reka wee 90 605 8am ee 164 Wool, Improved, Crossbreeding of Sheep oe ed oan cian ne 98 Work, More and Harder, Needed to Reduce Cost of Living, by H. H. Windsor......... 18 Workmen, Careless, Novel Signs Warn...... 33 Worm, Movable, Makes Wrench Quickly I ik ache pk nin eG, OO OO Bie ke we 442 Worms Retard Water Flow in Irrigation Dt ciara datinenahee se hae she denn &* ax 681 Worms, ‘Spraying Eliminates from Crop of chit Hebe tcbachak cote Shanta wh aes a 578 Wreck ‘of Ancient Galleon Yields Puzzling NN Ait eb nce St Gib idee bk a noe eee awk 51 Wrench, Eccentric, for Stud Removal....... 928 Wrench, Oil Petcock, for Small Cars........ 787 Wrench with Sliding Jaw Quickly Adjustable 442 Weeeemen, Offset, for Removing Connecting een Wringer Clamp, Vise Made from............ 792 Wringer, Old, Converted into Sorghum Press 30 Wringer Rolls, Benzine Removes Stain from 452 Wrinkles, Scalp Cutting Removes........... 18 Wrist, Blotter Attachment for Is Time Saver 584 Writer of Best Business Letter, Trophy for.. 480 Writing Desk Fixture in Town Auto....... 7 X-Ray and Microphone Probe Used Together ee Cis wan vod bb d 4 dea h wee eee 688 X-Ray, Flaws in Electrical Mica Found EES are aes 824 X-Ray Inspection for Parts, Airplane Fac- fe ¢ eee. 542 X-Ray Plates Make Hospital Greenhouse. 590 X-Ray Reveals Frauds in Oil Paintings..... 538 Yacht Tenders, Fender for.................. 767 Yard, Back, Swimming Pool Built in........ 926 Y¥-Gun with Depth Bombs Forms After-the- . « "Palais ata a a a Tae 908 Y. W. C. A., Chinese Give Strange Name to.. 480 Zinc and peged Alloy, Secret, Stronger CE bined kame Gihd« ssa 0 Keren «hares 6 420 Zinc Strip Ferms ‘ SE» a: send atte bnieie 764 Zionism—Migration to Palestine to Be Sys- ea AR GE aa -apeRN ieareERGEe gem 880 Zone, Panama Canal, Good Roads to Protect 2 rai Payson oe 526 Zones, Chicago’s Plans for Look to Future.. 890 Zoo Garden, Forest Land Given Chicago for 397 Zoo, New York, Birthplace of First Hippo- potamus Born in Sara 580 Zoo, Tokyo’s to Acquire Hippopotami...... 219 Zoélogical Gardens Have Congo Okapi An- telope