Popular Mechanics 1927: Vol 48 Index

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Popular Mechanics Magazine — oO INDEX TO VOL. XLVIII 1927 inenctenment li eivartsiation Edited by H. H. WINDSOR, Jr. oO JULY to DECEMBER, Inclusive ey ——- | Popular Mechanics Company CHICAGO

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Index to Volume XLVIII A Accidents luminous hats reduce ee See re 73 bathtubs lead in home ..... iota 74 Acetylene Gas—as auto fuel cuts cost of motoring. 34 Acid—fumes from special preparation beneficial for Ce eer er reer rr 442 Adhesives—air-tight pot prevents waste 5 aera 109 Advertisin ball-bearing crankshaft makes window display. 498 big tube advertising wengnee gives bathers WE San nacswens 987 door made into “showcase to increase » photo sales 430 glass window signs ............+.. SS ee 874 huge chair boosts town’ s ; industry ARE ret 253 huge cigaret on auto top advertises product .. 63 information office resembling a bureau peel ; Pe OE i cues ka eA Re eA - 112 lion’s head spouts perfume to advertise store. . 587 old airplane as garage sign ........... eA peanut-shaped auto body . 429 potato on Idaho auto license boosts state product 769 searchlight gun flashes pictures on clouds .... 16 statue of cow advertises city creamery ...... 927 stone elephant as billboard in China ; 960 switch outside show window saves electricity.. 264 wrecking car built in form of locomotive .... 718 Agricultural Implements dusting apparatus spreads insect-killing prep- SPGUOMS CR PMNS occ cecsscwinrcerevcs 384 farm problems being solved by use ‘of machin- -_ Pare nee first grain reaper constructed on anvil ...... 97 lightweight tractor for farm reduces work and cost .. feinian sees eamank eae 433 non-clogging hay ‘rake eee 515 paint on harvester keeps straw from beneath slats .. bina is ia Cha See os on tes A .scae oe planter saves seed and increases Crops ...... 399 plow tractor needs no driver ................ 231 salvaging of, helped restore South ..... 968 tread-drive tractor harrow can make short turns 641 Agriculture applying lime to sour soil ..........-...-.--. 172 binding short grain evenly .... ~ “*bird-proof’”’ rice developed by grain wizard . 96 methods to reduce farming costs studied in England ........-.-...-.:. ; .3. 818 most of sun's energy wasted on farms” set 98 see better seeds and crops by use of Cveiter . and grader .. “23 soil heated with electricity speeds garden gzowi 95 threshing wet oats .... 514 Air Mail growth sets aviation record Ee letters identified with label tape icaccwens ae parachute delivery to save landings eee ee Airmen—cup turns breath into water for ........ 359 Air Moss—is animal, rather than plant life ....... 884 Airplane battle, carries bombs and six guns ........ . 542 can drop motor for emergency landings ...... 621 defeated by motorboat in rescue of crew .. 233 detachable pontoon, for seaplane serves as a boat 802 (endless-track) landing skids help planes alight 21 “flivver’” has body like auto sedan .......... 534 greater speed object of tunnel tests ...... oo $33 midget high-speed, has 80-horsepower motor. 1000 model, flies backward or poises in air ........ 945 propeller blades or canvas resist corrosion ... 232 seven passenger, supported by one man .... 895 spare tire aids safer flying _..... : 9c at aie towing ten-passenger fuselage : « 43 without wing struts may have “greater speed . 984 memes Grams fOr .... ccs ices see ss» UeD Airship mooring mast on rails simplifies placing in ET Ss. Wo 5.3.5 0 «ani dina ea Bieta a 6 wid xa te 441 riding the clouds in an air ‘pullman els i strength of girder tested by squeezing ....... 210 to carry five planes ..................... oo OI Alarm—contact cable sounds, at pinch of finger ... 439 Alum—household uses for 1036 Anaesthetic—to be used for patients with lung dis- RAs Seer re ee ee . 792 Anchor—for guy ropes ‘screws: into ground . wars 259 Animals “bloody sweat” of hippo is red Moment wane, O06 care of in London zoo ............ aaa ee how world looks to ... 783 in first balloon flight honored ‘with coat of arms 897 life-like museum exhibits Sus Reha e tees 708 pests killed in Arizona drive ................ 561 rabbits slain in monster drive ...... a« S31 treating the world’ s biggest aches and pains . 415 wild, die early, “census” shows ........... . 721 winter refuge for wild elk . rene a a 923 Antiques—treasure hunting in your attic ...... §2 Apples—homemade wiper for ea ih acsn.s vw. SO Archeology ancient Chinese chariots show development of MN eo weora ond ered bs te te ae ancient toy soldier found in burial mound on 913 bible cities give up secrets .. icons. century-old mystery relics from Mexico ..... 797 glory that was Egypt now tourists’ haunt ... 119 mystery temple found in Yucatan jungle .... 255 secrets of the mounds ............ccccccness 243 Architecture animal and plant life to be carved on cathedral. 737 beauty of city increased by color of buildings. 890 insurance union building high as W oe monument ......... Pe 262 reviving the wonders of Maya kings ae Russians plan bomb and gas proot cities .. 924 Arctic—expedition to, will aid navigation ...... 785 Armor how to make wall piece .... 846 of rope guards ship from Chinese bullets” ies ae ae ritish, holds maneuvers for mechanical force. 91() cavalry kitchen mounted on a horse .... 193 pistol charge develops rep ENEI of cavalry- men Ghee iodeus 577 runs own railway at infantry camp. Ehascwindes OO tanks carry wireless ws 8 Army Maneuvers—wagon box as raft during 65 Astronomer—Danish honored by marble monument %)6 Astronomy color photos of Mars result in new riddles .. 987 Mars warm enough for life iio Ooe mystery of Saturn’s rings .............. 802 the world’s largest eye . neat aa sy: Oe what star gazers are doing for us Soe 26 where a pint weighs 25 tons awe 962 Athletics boxers battle in barrels .. ate come 84 energy tests on athletes ; rokcalic pile aale ae Automobiles armored car for delivering payrolls ......... 545 breaking them up to improve them .......... 819 canvas apron prevents overheating oe . 1038 car changed into fire engine to help save forests 956 carrying oilcan on long trip EE ee Tee! 499 cleaned with spray mixture from steam boiler.. 458 emergency grease gun for differential _...... 866 ferry for, guided by steering wheel .......... 569 filling station shaped like umbrella -....... 382 fitted for touring a tees wid sles eae ne 155 five foot car makes fast time ............... 49 for track inspections fitted for accident aid ... 5% grease cup helps prime vacuum tank ........ 1052 how to prevent a frozen oil pump .... .1032 ice cream delivery truck has refrigerating plant 207 jumps obstacle at sixty miles an hour ....... 76% luxurious auto camp for sheep herders ...... 465 Massachusetts license plate bears codfish Ja 58 old gaskets may be used over “ ee 701 potato on Idaho license ...... edie inate 769 protecting the car finish 684 speed of pocket size car eighteen miles an “hour 891 EME Ge Goa a oka «ne be pains on ee wa 678 towline kept from sagging aaah. shea ot mgt ae i) Gee traveling store for rural districts ........... 625 truck wheels of rubber reduce tire expense .... 955 curabudiiie on Ford fender brace Aut Au’ Au’ Au

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. 525 97 913 . 797 . 119 255 243 mes 890 262 76 924 785 846 248 884 224 545 819 1038 956 499 458 866 49 5&3

mobiles—continued Autowntilation tests show how to decrease heat on summer journeys ...............«6- water-pressure outfit for washing cars ....... 491 windshield wiper kink .........-6--0050055: 667 wrecking car built in form of locomotive .... 718 Automobiles—Accessories " air gun for greasing .....-------.+++ -erce B24 anti-froster gives clear view always ......... 792 ash tray and gear shift combined ............ 776 battery winds clock on steering post ........ 233 beach umbrella as auto top ......... Finn brake adjuster on dashboard ............. . 807 can of tire patches has knife attached ....... 593 canopy for rumble seat ......6.--6-..600005 1018 charging rate controlled by rheostat a ee 842 chemical windshield wiper .........-....-.4+ 670 disappearing bed latest camping comfort .... 968 electric pad protects feet of auto passengers.. 450 folding shield for rumble seat ............. 613 folding table fits all cars ............-..44-. 540 fuel meter registers waste ................ . 816 gas tank cap has chain attached ........ — heater eliminates back pressure ............. 906 heater unit helps start car and saves gasoline... 993 lamp to heat radiator prevents - eae eee oe match scratcher on steering wheel ......... 684 plug and jack for trouble lamp ...... ie i rim remover simplifies puncture repairs. ie ae self-dimming light penetrates fog ...... vene wae shade prevents day or night glare ........... 709 tin traffic officer in car helps prevent accidents 896 ol (SD na scuwcuseeonssnwsiews 1018 Automobiles—Batteries—adding distilled water to. 497 Automobiles—Brakes—tester eliminates guesswork 99 Automobiles—Care—merry-go-round wash _ rack a ere Te eer -iacgas Sw Automobiles—Design air blowers increase “lung” power .......... 278 comfort of car seats measured ..... 181 four speed and ‘“‘fast’’ axles promise "longer- ONE AI 6 onc s ence eas sates cceo sans 18 how “cheat” lines fool your eyes ........... 606 a rer ee Ferree ee 573 Automobiles—Driving adjustable shield aids day or night ........ 709 anti-glare cap for motorists ...... eee cautions in use of anti-freeze solutions .. . 1048 driver’s steering skill tested with perforated tape 209 extra steering wheel promotes safety . : 767

fence from old wheels guards ditch ........ ‘1031 gauge measures foot action to test drivers .... 762 green colored highway to reduce glare ...... 559 grooved highway across stretch of sea .. . 626 handle for steering wheel leaves one hand free. 373 instructing beginners ................ 1020 power steering eases driver’s task ........... 605 road map mounted on spring roller ... .. 860 snubber for Ford truck ........:..-sccces. 164 spectacles with mirrors afford rear view .... 715 stop sign tells cost of violating law . ah » tilted windshield prevents reflection in bus .... 911 trattic sign | in sil ee Ba Wis ome 973 Autc t and Supplies adjustable awning and ventilator ........... 79 aromatic upholstery is germ-proot .......... 402 awning and shade runs on spring roller. ere car easily locked with brakes set . —" it car-step se carries luggage ............... 248 concealed switch prevents theft ...... el drawer chest on truck holds tools ... ....... 526 folding bed for Ford roadster .............. 163 jack for balloon tires .... Scuihtied gy jack permanently attached ‘to axle oe kennel for togs on wolf hunter’s car » oo leather strap adds safety to coach 5 ..-..1029 oil and gas recorder on steering wheel ....... 65 reflector illuminates oil indicator ...... 868 reflux condenser for radiator .. : . 840 serviceable spring bumper ............. «> oe spotlight that turns with wheel eae aan . 878 water and oil pump ...... 020 Oe windshield screen keeps out dust and bugs + 6 Automobiles—Fuel—acetylene gas cuts cost of mo- toring viet 34 Automobiles—Ignition—ground wire ‘for breaker. 136 Automobiles—Lightin; automatic spotlight cuts out all glare .... 64 dash mounting for the spotlight cas ee flasher for stoplights ......... iccsow Bae headlights set in bumper reduce glare 280 Autepelice—Depeit clamp for h —, a or clutch pedal oa ed compact auto shop hauled in trailer .......... 39 POPULAR MECHANICS INDEX, VOLUME XLVIII 3 Automobiles—R —continued emergency, re Se how to clean celluloid side curtains . 497 how to remove broken key in gear shift 527 installing feed pipe packing .............. -- 166 knocks and squeaks traced by stethescope .... 40 leaky Ford radiator . 852 mirror a when working | ‘behind instrument oilin 3 Se err Te 1018 lt dae aids in brake adjustments .. 961 rear axle of Ford car .............. a 669 relining Ford brake bands ....... am . 688 removing overhead valve cages .............. 877 repairing radiator leak-...... ee PERE replacing Ford crank spring — ae 336 replacing window and door glass .... . 843 roller press irons out bumps ...... ‘ . 356 stopping door rattle ................ .. 136 tightening Ford door handles ..... oe vertical lift elevator saves garage space 999 Automobiles—Safety Devices and Measures—fiasher -.”t«é«<“R Sees 113 Automobiles—Tires automatic valve gives accurate pressure .... 769 casing spreader helps prevent pee co Ven flap with slots fits many sizes .......... —— inflation of balloon ......... <a old inner tubes made into rubber balls ...... 25 patching inner tube without cement ........ 501 patrol service removes broken glass.to save.... 787 preventing tube slits lengthening ; . 156 puncture sealing inner tube reduces troubles. a ride with punctured tire on extension ring .... 277 support for buffing heavy ........ fara cae eee tool for removing tread .......... reve . 161 tool helps replace daa 152 “totem pole” of used, marks desert road .. 809 Automobiles—Wheels shimmying stopped by friction plates we 216 spring to end tire troubles : . 208 Automobile Trucks—demountable bod y Lemna PE “ccctidwabens hace heen eens jah ee Se Aviation air garage to launch planes from all floors... 33 air landing planned for post ottice roof 816 airplane hop from liner points to faster mail .. 568 airplane motor strength tested in Dresden .... 378 airport tower at Chicago to honor Lindbergh. 573 air train of plane and glider in successful test. 218 air truck makes deliveries by parachute ...... 777 are ocean flights worth the wpneed Pemba’ Ges 885 balloon altitude record ... edhe icles . 182 carrier holds eighty planes 4 — channel record shows safety of air travel .... 626 commercial air traffic increasing in U. S. 551 deliver papers by airplane with small parac hute 968 electric airplane signals replace canvas strips.. 239 fog penetrating light to aid aviators 614 glider with propeller a substitute for parachute 461 gold brought by planes from Siberian fields .. 960 high school course to promote flying seen FON how high can man fiy? 778 hum of planes to light lamps. on ‘landing field. 587 hundred foot tunnel helps in studying airplane. 271 hunting seals from the air .. 555 kites to hoist radio antenna aid in airplane landings ... éaun 593 lamp facilitates night ‘landings. , 24 landing field electrically cleared of fog 272 Lindbergh tells future of .... 738 New York-Chicago air express ‘to save a day. 366 parachute is carried in tube to insure opening. 202 Paris flight shows need for speed indicator 183 plan to fly by air yacht from California to Paris . 365 plane replace ‘dog ‘sleds for ‘Royal Mounted 784 planes planned for transatlantic service ax ee prospecting from the air ... . 182 radio beacon to guide planes through storm 824 record flight with gliders .. er record set by air mail’s amazing growth 955 reversing propeller permits landing in restricted space 630 soldiers form living signs to guide airplanes .. 430 speeding the overseas mail .. 705 spring stick to increase safety of student tlyers 552 throwing out life lines from airplanes 907 transfer of new plane parts in air “s . 759 vapor light penetrates fogs . Ciena ae weather “cards’’ promote flying safety 807 what’s left for the air heroes to eengurr . 642 what the airman sees below .... eles 922 Ax—handy holder ........ + ES Sap .. 702

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4 POPULAR MECHANICS INDEX, VOLUME XLVIII B Babbitt—improved with rosin , 878 Baby Carriage—rocked by motor . 762 Baggage—outboard motors cannot be checked as.. 317 Baggage Truck—rubber tired .. 1046 Bakers—boys in public schools learn to become 407 Balloon ‘ motor, for army use sae a 635 “pocket” carries man 300 ‘miles és sara 994 Balloon Record—eight miles straight up .. ~ af Balloons, Toy——made in queer yes Ra Nes Balusters—method of sawing “ Sedan doit Oe Banjo an rests player and improves tone oe 242 two-tone has damper to regulate sound 418 Bank of England—electric walls and floods guard. 278 Barbed Wire—tongs for handling spools .. . 336 Barber—mirror set for chair aids better hair cuts 232 Barber Shop—sign inspired by comic strip ....... 75 Barrels easily pulled up stairs pemaws .. 883 lever for handling saves lifting i ecavt 94 Baseball—indoor, played in box ae arte 946 Basin—repairing cracked soil aoe | cio Basket Ball—roller skate, latest army game , 182 Bathing Suits—balloons in serve as life preservers. 355 Bathtubs : huge stone in India 455 individual aid health of Swedish children .... 23 lead in home accidents Be ee Pa 74 Batteries emergency connection for mapa . 146 truck for carrying storage Sr ie 671 Battleships—electric fans end blasts on .. : . 600 Beauty Culture electric manicure set saves time .. - 193 face bath of light and vapor 719 self-operated marcel waver won't burn hair 543 folding for Ford roadster ‘ 163 folding, has lock frame and sagless spring 640 folds up as knapsack tor hiker’s comtort .. 254 simple rail for child’s tea see enn ake ens 490 wardrobe chest attached to : od oe Bed Joints—locked with hinges a saat ana aoe Beehives—keeping wasps from od ow ae” guided by sense of smell 31 secrets of raising taught at German school . 777 Bell—announces arrival of mail in tarm box oi 150 Beryllium—to improve airplanes .. e 961 Bicycle flying, to have speed of fifty miles an hour.. 982 riding on whirling disk ot oi 754 Bill File—made from tobacco can ; es 668 — ancient game Aer - sae. ae Biolog Uostate can live without oxygen 610 unseen life within the soil ae big san in the world ee m .. 432 Birds “filling station’ for . = in for study protected by ‘transparent case 31 girl trains for movies ia a 785 hunting birds of paradise 722 many visit Yellowstone park as , 807 migrations due to glands? ba kahoe 95 miniature city attracts warblers 599 ornamental dovecote .1017 plate glass punctured by force ot Hight ses OO routed with Roman candles .. i 624 secret of flight sought by science .. 929 that live at sea . 375 when canaries go to school 258 winter feeder for ; 1035 woodpeckers harm power lines’ peies 974 Blackboard—self-erasing eae 351 Blacksmiths—village smithy still here .. 928 Blind—and dumb wear labels in Constantinople ... 533 Blewtorch damper aids in lighting Sa 523 non-slip base for “e oe aoc) ee useful accessory for 869 mer ~~“ epee ts valuable in treatment of diabetes ; - . 441 Boats and Boating ; birds’ wings emulated in new sailing yachts... 986 decorated boats for carnival , . 74 dolly aids in landing ite 317 easy way of handling outboard motors Fe 839 electric, for children runs on batteries 385 five-speed outboard motor . 2 eee . 956 Boats and Boating—continued launched by motor truck os eileinss inate 552 laying up the boat for the winter 854 one armed fisherman’s steers with wheel <n Se pocket canoe sponson ends danger niece eee portaging the outboard motor ade A racing in eggshells 2 399 small boat run by windmill built to cross “At- lantic 999 speed boat of. rubber won't get water- logged "1000 speed boat to cross ocean in twenty-four hours 809 tiny canoe paddled by arms : Lee 769 Boiler—steam trap for .............. ee 512 Bolts—handy holders for ‘ ee Bookcase—rabbit for children’s room. Terres. Book Ends—Japanese effect iecnae 327 Books—protected by worm-proof paper 603 Boring Machine—for ceilings has saw attachment 594 Botany—light tests show plants’ need ot sleep 281 Bottle Labels—substitute for paper . 670 Bottle Opener—fastened to wall saves furniture _. 610 Bowlders—artificial, protect river bed from erosion. 928 Boxes—carrier for two : ; .1039 Boxing gauge for measuring force of poe a omiate 96 in barrels . rere 884 Brains—and beauty pee 23 Brakes emergency rope ..... = , . loa ae handy wagon ? i .. 144 Brass Letters—inlaying in steel 7 ae Brass Plaque—make your own portrait ae 663 Bricks made from rubbish used for building a% 472 molded in different shapes to aid laying soe 04 T-shaped concrete are easily molded .. ....402 a double spiral ramp for reduced cost 399 flood water flows over top of oo... 688 Japanese, shows progress Fae ae ou moved while in use 446 natural, studied by scientist to determine safety 614 new Hudson river to be largest steel structure. 718 old stone more beautiful than modern steel 794 two hundred feet high for logging aa 113 Bug Catcher—effective .. ; io 138 Bugle—announces train .. ras ; 735 Building Construction advantages of air space around foundation. . 1040 better sifters for the builder 350 brick molded in different shapes to speed laying 584 building paper kept on sawhorse .. 347 clamp for concrete columns cuts cost ‘ 295 double-barreled nail driver speeds car building 57 driving long rods into the ground es 1047 emergency rope brake 166 endless steel joist bridging substitute for wood 283 excited spectators exert extra strain on grand stand 50 fabric resembling stone makes handsome ‘wall covering ‘ : : : oe B02 hints for the builder 337 homemade loader saves time for contractor .1041 hot air pumped in new ‘eeeee for — drying 424 improving corn crib sill 1043 lath held on ladder WEY” a a =: 173 movable concrete forms ai ey a ae safety hints for the builder Ee | temporary support for overhead joists 162 wetting brick after laying no help to wall 238 Building Material—sawdust-cement mixture 1000 Buildings—houses without windows lighted by glass roof 25 Bullets—that leave track of fire aid target. “practice 99% Bull Fights—horses wear rubber armor during . 288 Bump Meter—insures smooth roads .. 961 Burbank, Luther—his work is being carried on 627 Burglars “breath current” gives alarm to oil om aoe poison crystals in safe wall to defeat “on 247 Burros—used in taming horses .. 761 Bushings—compressor for es . 865 Butter—origin traced to sway of camel 891 Butterflies help walnut crop in California .. sy ane in picture frames are art novelty : . aan profit and pleasure from .. 822 marvel of insect world 576 e held to wall by staggered screws protecting shore ends of six-inch tongues of,

Cal Cal Car

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552 854 414 736 138 399 999 000 R09 769 512 700 487 327 603 594 281 670 610 928 039 96 884 23 166 144 334 663 472 584 402 399 688 RRS 446 614 718 794 113 138 735 1040 350 584 347 295 57 047 166 283 50 202 337 1041 424 043 173 174 349 162 238 1000 5 998 28x 961 627 253 247 761 865 891 x 18 37 ? 57 wmewhy 348 957

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POPULAR MECHANICS INDEX, Cactus craftsman makes beautiful objects from ..... 745 gublses GOMB Concrete Forms movable takes ph dertinge ane ee wall tie for, saves work and cost we 987 Cooler—portable, for fruit cars » 617 Cooling the House—with water sprinkler on roof. 137 Copper—defies electrical laws 5 Cork—world’s supply furnished by variety of tree. 375 Corkscrew—substitute for - “ .. 840 Corn Borer—$1,000,000 to fight .. 386 Corn Crib—improving construction sill 1043 Corn Stalks homemade cutter “ie ; =< » 335 yield silk and explosives os Bee Corrosion—preventing on shatting 874 Cosmetics—centuries old found in Austrian ruins.. 792 Costume—mask, made from a tiber boxes 842 Cotter Pins—that won't rust 1043 Cotton—mechanical picker now used bs . 458 Cow—makes own vitamine B 540 Crab—travels thirty miles in a year .. ee 431 Crane combined with elecfric saw saves labor 640 wrecking for airplanes 105 wrecking lifts boat over dam spillway oe 583 Cream Separator—improving ... 498 Cricket—how tree, produces music 725 Crime falling shutter traps thief 798 fingerprints enlarged to aid identifying criminals 973 “safest sate”’ robbery puzzles police 7 wns . ‘ Scotland Yard enlists radio to help catch thieves 936 steel mitten handcutts prevent use of gun 976 tracking down the mail robbers 898 Crockery—Siamese tower built ot salvaged.. =i Frontispiece, July Crops—coining surplus into money 795 Crystal Palace—cleaned by expert climbers Crystal Sphere—iortune telling, beautitully ioned by Japanese << Cultivators—plow pins for Curios—carved from coconuts Curling Iron as glove stretcher coin-in-the-slot electric Currency—old, salvaged for writing paper Curtains—weights to prevent whipping Cuspidors—sanitary carrier for a

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6 POPULAR MECHANICS INDEX, VOLUME XLVIII Cuts—inexpensive, for tigen pokes ineeteeae Cutters—clearance of milling rr ee ee D am built around railroad without stopping trafic. 439 concrete arch is thousand feet long .......... 460 Damascus—covered street resembles pipe line .... 800 Deafness hearing through the teeth ............. 257 — by work of leagues for hard of hear- eS Te eee TE ere TT 201 —- so buries treasure .......... 623 Diabetes—relieved by substance found in the blue- rere ee 441 Diagnosie—cectric doctor tests heart to diagnose ERE OE CE rr ee 2 Diamond Drills—may reveal secrets of earth’s in- De >. ce ctunewes + akaek Unie vas wee eae 86 Diamonds—bathing, to check yellow tinge .......1029 Dictaphone—used to accurately chart New Y ork ata e 2c Ro kb Gee ORO AGS ome val ; 2 File—point handle for, aids ‘in filing” Fete: : 338 Filler—labor saving, for liquids .. eae 689 Fingerprint—magnifier aids crime a oa Fire—sheep lessen danger around oil tanks ...... 242 Fire Fighting auto changed into fire engine to help save DOE: esivs ss adash Pi 956 blazing skyscraper offers problem ‘eee sine 3 extinguisher like pistol Yee es pow 98 soapsuds extinguish oil or gasoline fires .. 753 water gun on boat throws fifty gallons a second 745 with the fire-insurance patrol ..... ‘ 755 Fireflies—bowls of, gift to Japanese Princess cas: 5 Fire Hose—folding guard to protect .... one we Fireproofing Christmas tree ornaments ee See se 1017 liquid for fabrics also protects ‘wood .... 433 wood and paper with new compound .... 79 Fire Station—like residence — dace: re Firewood—carrier for ....... ca ane 31¢ Fish and ye | bait can with self-closing lid hooks to belt .... 535 Belgian shrimp fishermen use horses ........ 97 cafe patrons catch own trout eee 44) effective homemade lures _... Sanwa 409 fish basket top holds hooks and lines .... 816 fish caught by electricity ; oath a 7 folding reel to dry line . 7 greased casting line will not sink i a% caow 8 guarded from road oil by curtain on bridge .. 9 houses built on runnners for smelt fishing .... 4 how to pull jointed fish _— oh eee kink for fishermen ee

Fish Fish Fish Flag Flas! Floo Floo Floo Floo Floo Flow Flow Flow Flut Flyp Fog Fog Fooe Foot Fore Fore Forg Forg Foss Four Fou Fran Free Frei Fro; Frus Fum Fun: Furr

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POPULAR MECHANICS INDEX, VOLUME XLVIII 7 d Fishing—continued Furnace—continued Fish as species can change color ............. 554 combustion unit for to reduce coal bill ...... 812 4 meee your own trophies ............-+--5. 139 gas, for home has many advantages i. 71 warts 603 ipeless, made from old heater . 1049 997 primitive methods of fishing . ce eereee pipeless, 1035 296 putting the can around the sardine inane , 763 repair of steel wool ...............55. - : Saber ball con fish hooks protects from weeds. 432 Furniture—mat is handy for moving se 59 “star gazer” has eyes on top of head 58 Furs—from reindeer new industry in Alaska .... 41 897 successful long distance shipment requires oa ~ Store—roadside, solves high rent problems . 241 | yecial nurse Pes ie ere ur Trade "7 te svegin growing on farms profitable ........ 273 a race for a fortune ........... e. 4 5 winding leveler prevents backlash in casting. . 254 big demand for moleskins | ee 732 ; 969 Fish Oil—increases efficiency of insect sprays . 83 Fuse—glass plug discolors when it blows out . o 523 Fish Scales—backs for toilet articles made ot 59 Galoshes re ; Flagstone Walk—make your own ........... 333 how to put on easily : 318 Flashlight “seconds” have holes punched in back 1020 492 combined with gun gives double protection reed —e-Se= you can’t beat .... 451 ei SEER. 5 cv ow cu vosceee ames 253 ee, aa OW DOME neces cncccsscvenss 683 combination “roll-down’’ and seesaw .. 667 B94 ae indoor baseball, played in box . 946 806 animal victims rescued by Red Cross .. 457 Garage a 256 can the Mississippi be tamed? . 188 concrete bumpers for . 33 316 crawfish burrowing in levee a contributing determining position of car in garage. fas 173 327 cause Re ee 50 double-deck parking for ange beach .. . 534 216 Flood Relief—how salvaging farm tools | s helped re- novel door installation ..... .. 324 450 heb WHE an ce vedneet eboee . 968 old airplane as sign 95 554 Floor Finisher—fits corners ...............--- . 296 Garage—Accessories 1029 Tl) Flocre to cotaleh, oft seine pei hes and ons sane paadl dapeemer alle io enue Gapentaneats, 968 ric, also ishes and removes - 920 weer arith penarinsath ceaunetinnse 39 clamp to hold auto hood 1051 632 Flower Box merry-go-round wash rack quickly cleans autos 895 : 960 lghted , en eae inc dal o> 36 portable oil cleaner substitute for pit 360 34 to prevent wood rot . 671 valve grinder that fits hand senna . 923 " 923 Flowerpots—on sidewalk beautify ‘city , 94 vertical lift auto elevator saves space 999 860 Flowers wrecking car like locomotive .. . 718 . 703 chemical garden Lemekwiewas .. 844 s color and odor draws insects .. . 620 . 637 found north of Arctic circle os . 731 G . 976 laws in fifteen states to protect wild . 58 Garden make design of first locomotive eae es 770 at sea : : 923 . 513 new tulip wins gold medal at show .. . 207 from quarry around cement ‘plant .. . . 999 161 raising millions of water lilies ° . 601 old stump as giant umbrella shelters seat 217 691 some kinds of goldenrod cultivated .. 955 toadstool canopy is novel decoration 728 798 unusual colors and fragrance ene by cross Gardenin pollination ..... 1.2.6... sees emeeees 465 blanching celery with paper ............ 166 watered with lamp AED 852 “collars’’ speed plant growth ... 938 Flute—of gold has improved tone .... 461 long handled weeder saves stenping . 460 1055 Flypaper : spraying tower 99 38 handling sticky ............ 325 vegetables grown in tiers to save space 431 ” 701 held on paper spindle 670 Gas _ §27 Fog Horn—two tone heard forty miles 56 carried across auto road in flat pipes .. 727 “ Fog Signals—triangle used as gong 588 made from farm waste for pert 4 145 Food and Nutrition E method for locating leaks 865 703 feeding experiments with rats aid tests ... 598 Gas Masks ' 322 how Uncle Sam’s food testers help you .. 995 guard engine men while passing through tunnels 621 569 Foods tested to prevent accidents .... 890 ? odd, in many lands Some tecoea ek o ‘. 823 Gasoline—from coal averts threatened oil shortage. 976 450 searching the world for new , 435 Gasoline Engines—moving stationary .. . 351 " gg? Football s Gasoline Lamp—cleaning generators 151 , 369 building beef and brawn for .. 716 Gas Pipe—tide floats into place 186 ' -_ meter to locate ball on field ...... 721 Gate 2 Forestry automatically closing 325 334 lorest clubs for boys and girls .. 115 better garden 319 689 “inside forest’’ helps in study of 106 lattice for stable door .. 513 4 Forests : ; locks for factory 175 * 942 air patrol to reduce timber losses from fires 416 Gauge : spared by saving old newspapers 42 clothespin makes marking 523 ve Forge : handy method of setting surface 336 956 improving the small shop .. 348 self-centering ring, for lathe work 702 "3 portable carries rivets ............ 340 strength of boxer’s punches tested by electricity 96 ” 969 Forge Blast—control for ................ 172 to place door hinges 982 753 Fossils valve clearance 165 | nd 783 bones found in Kansas river bed .. 209° Gauge, Depth—spring clip for 318 755 secrets of, revealed by ultraviolet light os 753 Gears—meaning of diameter 513 t 536 Foundry Ladle—sliding- -grip, guards hands from Gems—mysteries of, puzzle scholars .... 9x5 } 49 WE ciscxeadubieds 465 eee oa ; 998 Genius—can it be detected by facial expression 23 | Fountain—colored lights reveal beauty 363 Ge5eodetic Servey—temt keepers of the mountain 1017 _ Frankfurters—without casings ... 408 — Lawes a af : 249 | 433 _ Freezer—crankless ice-cream, serves as ‘portable re- Geograph: 79 j frigerator soemnd us ei er d Th teint ein tg eed .. 638 vee ny pleasant with sectional globe . 598 oi) & Freight Car—iife of wheels six and one half years .. 33 sectional globe aids in teaching _... 448 316 Troge—cightecn tons shipped from ten-mile area .. 448 Geolory- submarine circles globe to ataty earth’s 4 ruit . Seer: ) Terre rr eres eee Te 265 53 ld bushel basket packer saves time and work . 40 Geysers—forms of "animal life ‘discovered in. . 455 97 ; picking tower saves time ..... -... 536 Glaciers—affected by weather hundred years ago 279 a7 li portable cooler for fruit cars .»........ . 617° — Glass ** ayg ripened quickly if stored in gas . 7a as a substitute for tracing cloth we 868 "" 806 Fumigation cutting, in small shop ae 167 * 915 : ree 700 fluids tor drilling ........... 1043 "719 small pocket size stove .._.. é 5 5 plate, used in U. S. sich ae are 541 uw Funnel—for bottling beverages ........ .. 682 Gloves—stretched with curling iron ee . .1032 » ee Fur Coats—of artificial silk ................. 16 =Glue ‘417 fe Furnace casein ee 316 * 665 automatic draft accelerator for bis neem camel how to preserve - gidaie Meweracs ; 150 1030 4 automatic valve for water pan .............. 1018 co Or rey us 667

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8 POPULAR MECHANICS Glue—continued kept in oilcan ‘ 173 uses for around the home. id ax Goats—Himalayan mountain, have twisted horns 369 Gold brought by planes from Siberian fields 960 mine yields eight cents to ton of sand 201 Goldenrod—cultivated as garden flowers ........ . 955 Goldfish grown in darkened tanks to pe waisted eyes .. 6 588 kerosene treatment for ‘their ills 193 Gold Mines—Queen of Sheba’s tound in Arabia 460 Gold Rush—ghost cities ot the west 633 Golf ball branding stamp prevents loss .. es 913 home movie lessons aid players = 401 match and tee holder easy to carry 241 perfect swing taught by machine 623 practice in iron circle tor proper swing 531 sweeper for greens . a 843 tee and score pencil combined 799 Golf Club—sight on, to improve stroke 11 Golf Ground—new sod for putting greens 114 Goose—hunt mysterious blue, in north 391 Grain binding short grain evenly . 340 portable loader helps market grain sO Grain aaa cael hoist peed trucks and wagons 90 Grand Canyon—bridge across will aid ‘trattic 449 Grandstand—excitement adds to weight ot crowds 50 1043 Graphite—prevents rust of cotter pins Grass—rice, protects sea wall and helps reclaim land 794 Grinder—handy for the kitchen . 639 Grotto—cavelike, catches old-world charm 392 Guide—for cutting knife "1041 Guitar—all metal, produces loud sweet tone 360 Gun coast defense had range of 27 miles hidden in cane handle to fight bandits man shot from mounted on ftiashlight gives double protection of rubber shoots arrows sight for anti-aircraft leaves hand free to prevent rusting atter cleaning Guy Wires—device holds ends ot cut H Hailstorms—over $100,000,000 is annual loss trom Hammer—for armature winders Handcar—windshield for Handcuffs—like steel mittens prevent use of gun 976 Hangers—hat, for closet shelt 1019 Harbor Survey—New York, by means ot dictaphone 551 Harness UDO™=MmONS wAwWKNSe +-nNWON UUs te 641 1055 .. 1048 hanger aids in hitching and unhitching 690 hanger for heavy ; a 701 Harrow—tread-drive tractor, can make short turns. 641 Hat Protector—of tissue paper * 137 Hat Rack—has lock to prevent thett 551 Hats decorated with tinfoil 635 kept in shape by brace under sw weat band 261 luminous reduce night accidents 73 odd, for men .. 118 waterproof straw keeps shape 192 Hay—hoist for, saves work .. “ 339 Hay Door—sliding, for the barn 165 Hay Fever—air filter helps against 385 Hay Rake—non-clogging 515 Health—creeping helps children with weak ‘spines 718 Health, Public—air samples tested to » guard 592 Heart—marvels of human 120 Heater for small shop floor 1055 hot-water, that works 870 in platters help keep food warm - $23 Heating—steam sold by meter in New York build- ee ‘ oe 295 Highway Construction—the new billion dollar science a 589 Highways—patrol service removes glass from, to protect tires . parte as 737 Hinges—lock bed joints. i 154 Hippopotamus—"‘bloody sweat” is red pigment 906 Hobos—railroad fares from fe 65 Hogs wcutematie currier and oiler tor 34 teeder for young ‘ a ‘ i. 2 Hoist—hydraulic dumps grain from trucks or wagons Pichia kG Werceata see eka a 90 INDEX, VOLUME XLVIII Hole Borer—motor-driven helps in planting trees Homes—water tank converted into apartment build ing ‘ Horse Racing —the horse or ‘the jockey ? Horseradish—iumeless grater Horses Arabian raised on farms in United States defeated by kangaroo in speed test spectacles for race tester tor eyesight to curb disease wear rubber armor during bull fights wild tamed with burros Hose—protected by detachable reel on faucet Hospital—ship for U. S. navy Hotel self-service has no clerks or bell boys world’s biggest (Stevens, Chicago) House—stranded during grading of street House Cleaning—washer tor nnn « reduces oo costs ee — ‘ ‘ ° Household Devices adjustable bottom for kettles prevents scorching adjustable glove-drying racks adjustable mop wringer adjustable steaming grid saves valuable sub Stances aluminum glove mender and stretcher ash tray with extinguishing pincher - automatic electric iron automatic safety plug tor electric iron baby jumper seat for exercise baby sleeping bag : : je bassinet with adjustable top .. brush to remove dust from clothesline cake pan for baking on top ot stove candle that requires no stick can opener operated with crank carpet washer scrubs and dries nap cleaning glove for dirty hand collapsible comb with metal cleaner comb cleaner . compact electric range cooks entire meal at one time ° compact electric range uses “current from wall socket container keeps cake moist and protected cotton-tape mop head cutter tor preparing tancy detachable knife edges detachable wringer takes drudgery trom mop ping vegetable dishes dustpan with flexible edge aids ‘clean. sweeping 56! easy ways to save work in the home ejector on serving fork protects food and fingers 2 electrically heated blanket for sleeping porch extension electric light bulb with handle floor lamp throws light at any angle fruit jar cap straightener reduces spoilage garment and shoe racks for closet door gas stove in cabinet .. oF ere glass clothes sprinkler grinder for knives and shears homemade drainboard for kitchen ironing pad that won’t burn kitchen aid for separating yolk and. egg and for straining .. kitchen cabinet with sliding table large toothed bread and cake knite loom for weaving small articles metal clamp holds dishcloth, cork or steel wool metal cover for milk bottle holds tickets or coins metal ring focuses gas flame milk bottle caps to seal jelly tumblers nail brush in cake of soap prevents waste outfit for cleaning floors ws pea sheller fits on dish percolator with separate base ‘ perfumed tablets to eliminate c. soking odors portable electric kitchen preventing picture marks on walls puppy purses rubber rocker tips protect " woodwork safe and clean incinerator : special filter improves coffee spring outfit for small washings tester tells if milk has been adulterated. three armed drying rack for clothes toothbrush holder with sterilizing device towel rack under drainboard .. vacuum cleaner with revolving brush ventilated, mouse proof clothes hamper wardrobe "chest attached to bed window cleaning, chemical rag for sink white of XR4 OS 462 814 Pak aA Loin a ne

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es 64 ild- 49 916 217 374 238 824 20) 28K 76) 383 254 S84 ) 63 uint +B ing 462 $14 462 ab- 287 110 I]t 814 462 $14 110 638 110 463 99] 110 99) Ill | 111 ng 561 568 99] SO 99}

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a a en = ey ie POPULAR MECHANICS INDEX, VOLUME House Plans ae -176, 352, Humidifier—for the incubator Humidity—homemade indicator ae ae Humidor—homemade Chinese < ee Hunting ammunition belt made from pocketbooks anchoring decoys J ibaaae adie yaw big game in rubberland birds ot paradise how to build good shooting blinds how to make wooden decoy ducks Hydraulic Ram—curing a waterlogged va Hydrography—navy charts sea bottom for subma- rines Hygiene—individual bathtubs aid health ot ‘Swedish children pa ye os I covered, will last longer aioe cubes sold in drug stores ice-making unit fits old box machine for kitchen use uses little power to carry on running board Ice Cream delivery truck has refrigerating plant electric freezer eliminates salt and ice tlavor coat tor cone latest sundae novelty frozen with tablets ; : special scoop tor cones 528, 704, 880, 1056 490 325 147 669 508 611 722 672 678 047 19 23 501 105 575 18 331 207 406 393 904 923 Inhaler—medicated vapor, heated by electric element 283 Ink, Printing—to help reclaim old paper 285 Insects caught with bow and arrow $17 cone to flowers by color and odor 620 electric lights as bug traps in rice fields | 253 outside light keeps porch free ot .. ae 154 Insomnia—bed rocked to imitate train as cure 889 Inventions developed out of hobbies 379 how to sell your 419 Inventors—Major General Squier ‘of the army 410 Iodine—to remove stains .. $51 Iron acid test for en 879 ore from Sweden hauled by railroad inside Arctic Circle 905 Ironing Pad—that won't burn, has soit springy sur- ‘ace " 440 Irrigation Canal ‘most economical shape found by experiment hace 1052 Ivy Poison—cure for 331 Jail—concealed on top of courthouse 114 Jefferson, Thomas—honored at celebration as in- ventor ben aae o¢ 12 Jewels bathing diamonds to check yellow tinge 1029 tales ot the gems in ‘Tower of London 466 Joists—temporary support tor overhead 162 Junk—new uses for old ale . 1045 K Kangaroo——beats race horse in speed test ........ 238 Key—two part sate-deposit gives extra protection 431 Kites life-saving, to drop line over wrecks 544 used to hoist radio antenna aid in airplane land ing 593 Knife—satety wood- splitting | is substitute for hatchet 41 Knitting—holder Abe ball of yarn trom drop- ping : 7 eee 75 L Ladder as holder for lath «. B73 combined with wheelbarrow 331 made from wagon tongue ; ie to attic concealed in closet .... ae - 165 — Wicks—used to water flowers 852 Lan scaping—make your own flagstone walk .. 333 Language—iragments of Sinai found in Arabia 434 Lathe chip guard for ere ee ar 879 depth cutting in Pere 512 Laundering—mangling with wringer vn 228 Laundry—tests show how to make clothes last longer ian 60 XLVITI Lawn homemade water-ballast roller a0 how to make and keep a good mowing large trimming shears guard knuckles ia erate a Lawn Mower changeable blades simplify trimming lawn .. made with old safety-razor blades ° vacuum motor saves time and work Lawn Sprayer—clockwork spray nozzle water waste ‘ . ‘ ae Lawn Sprinkler—makes rain and won't clog Leather—artificial made trom scraps Lenses—sand blast cleans lenses on railroad signals Leprosy—1000 cases cured in five years Liberty Statue—tlames from torch only chemiéal smoke se Librarians—iace mask shields from dust Library in boxcar for lumbermen on wheels serves rural readers Life Belt—inflated with gas Life Preservers—made from suntlower pith, than cork =e Life Saving electric pump to restore blood circulation heroes of underground world kite drops life line over shipwreck reduces lighter 3 992

throwing out lite lines from airplanes 907 umbrellas used to teach wad wa Light—tog-penetrating to aid flyers 614 Lighting parade light for musicians attached to music with clip fe 95 tests on miniature stage aids show production 7 Lightnin, artificial, studied in laboratory 891 bolt strips walls from house 32 Light Rays—letermine kinds of rock in the moon. 373 Light Waves—much unseen to the eyes in ray ot sunlight 288 Linen—"‘super-flax seed’’ dev eloped to make cheaper 247 Linoleum heating facilitates laying 1039 on curved molditig protects baseboard 289 Linseed Oil—to bleach aye ass ead 1055 Lions jungle scenes painted tor cage $17 the man eaters Part Ll 43 Loading and Unloadin dumping boxes help to load wagons 351 platform for wood trimmings 514 Lobster kerosene as bait increases catch 367 trained to do tricks 600 Locks assembling flush extension bolt in door lock 841 door knob has cylinder tor added EE 969 for factory gate . ee 175 Locomotives eat their smoke and drink steam 15 tires kept true without removing wheel 44 Log Cabin—up-to-date iY 157 Logging—bridge two hundred teet high 113 London—shopping district beneath Picadilly Circus 42 Lumber knot remover fur boards also plugs holes 230 more used in California than any other state 637 water-soaked logs salvaged for s 913 Lumbering—aided by amphibian tug 937 M Machinery—tested in “‘padded cell” 960 Machines—should not be — in midst of fine cut _ : : 690 Magic and how it is made .. 546 Houdini’s books in Library of "Congress _ 240 Magnet—extracts metal from eyes 732 Magnet Wire—removing insulation trom ~1039 aner-— aeeurened in saree to market increases cost ° 57 Mail faster through airplane hop from liner 568 slot machine that cancels letter eliminates stamps speeding overseas tracking down the robbers Mail Boxes bell announces arrival on farm for motorists inerry-go-round simplifies deliveries Mail Clerks—must have remarkable memory

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10 POPULAR MECHANICS INDEX Mail Delivery—cable lines as substitute for atgiente 209 Malaya—adventures in topsy turvy land .... . 194 Mammoths—hunt in America for tossil collection. . 200 Manicure Set—in small tube .... 191 Map Making—binocular on drawing ‘board aids a eee ‘ re 186 Maps—changed by discoveries ........... eee 894 Marble how to repair .... ‘ine . 689 the romance of cutting DE rer dhatebi ance Sox ere ae 226 Market—open air for motorists 120 Mat—handy for moving furniture iecaincaa's arti et ies 145 Match Safe—made from cartridge shells i eretae 497 Meat Packing needle branding device identifies grade of meat 985 scraping hogs by electricity eliminates use ot hooks : 289 steel gloves for packing- house ‘butchers. 943 Medical Sapgiee— —for island lowered to raft trom liner sind / Ns Weal 6 6 112 Memorial earth mound in Polish city honors Koscinsko 200 foreign battle monuments to American heroes 958 Meters—handy place for gas and electric . 323 Microphone—police hear through wall with ..... 73 Microscope—small pocket, like pencil . 68 Mileage—determined by wheel with special meee 3 NE i cick saw whi 727 Milk—treated with steam to. prevent ‘souring 254 Milk Can—floating frame to hold ey 332 Milk House—screened shelf for 2 de reuse 6a a siete Milking—device for holding cow’s tail 5 a aie Milk Pail—clean bottom tor ya ' 1017 Mimeograph Work—how to color ............+.. 162 Mines and Mining electrical indicator detects pamene ot methane a ca ap eee ; Ney heroes of underground world locomotives carried on mules for Mexican mine 983 prospecting from air .. Sa ieee meee 182 Mirages—weird phantoms of the air . ... 979 Mirror—combined with photograph and lamp .... 588 Mirror Gauge—gives measure of — s height 800 Miter Box—improved .........-.-.4--.-5-. <s Bas M build the “Flying Cloud” ‘ 4 1021 cork model of Pantheon shows artist’ s skill = glass skyscraper hintS new building age : miniature reproductions of cities, harbors, etc., new industry ...... RES Cee model maker’s vise 489 of human nervous system eer 584 plane flies backward or poises in ‘air 945 slinging the model-ship yards ani 501 Mold—ingot-casting, weighs 91 tons 615 Moleskins—trade in, totals millions yearly 732 Monkey Wrench—who gave it’s name? 248 Mosquitoes—ways to eliminate ... 150 Moth Balls—substitute tor 155 Moths ct i Mt cedar lining in board form for clothes closets. 7 killing in furniture 171 trapped by electricity to protect tomatoes 727 Motor—outboard removes water from flooded base- re ee - ‘ .1020 Motorboat backfire danger stopped by valve on carburetor 57 defeats plane in rescue of crew 233 SA Se ere ne ere ee 537 my 4 steel speeds "twenty- two miles an hour 234 Motor Bus : danger in * “gassing” reduced by grounding 218 highway “liners” have many luxuries ; 560 tilted windshield eliminates reflection and aids GAG ..cs+es. 911 Motor Genes —Saestons European, ‘with kitchen: ee wi os 383 Motorcycle contortions of passenger help win race 905 has inclosed passenger compartment 202 trailer cuts outing cost . 914 twin sidecars carry two children 904 Motors : musical test detects defective brushes .. .. outboard not baggage 317 portaging the outboard 138 Motor Sled—run by cogwheel 942 Motor Trucks attaching springs to axle .. 170 getting out of a mud hole .. 507 rear dump has crane for loading : RO a . 30 used to launch boats from dry-land shipyard. . Se Mountains—how made, shown by models ee , VOLUME XLVIII Moving Pictures aid in diagnosis of disease . cameramen ride on engine to film rail movie compressed air outfit for administering make- _ Sear doing the impossible in the movies earthquakes may take their own ennai filmed from tree . fool cats and birds, but not dogs hair tests with color chart to improve home lessons in golf aid players movie makers defy weather 6n indoor stages. mystery solo with organ latest stunt new light for indoor amateur movies portable camera for close-ups , ship inclosed in cloth screen for taking tog pictures show romance of industry traveling theaters for Italian towns . ‘ “wrestling’’ camera registers fighting face oe pe corks that won’t stick Mutgeards tachable, for shoe heels on shoes, protect stockings Mules—carry locomotives for Mexican mine Museum—on balancing rock Mushrooms—growth speeded with artificial storms. usic band, kitchen kabinet .......... odd assortment of instruments for mechanical orchestra ... ’ one man plays 22- piece orchestra... |... scales measure power needed to play piano Musical Instruments—serpent of old-time bands produces sweet music ..... as : Music Rack—parade light for ats tetas ie ‘ N Nail Brush—in cake of soap prevents waste .... Nail Driver—double-barreled speeds .r building. Nails—umbrella headed, prevent leaks National Guard—cherry tree crest for District. of Columbia ; Nature—mechanical contrivances. follow lines ot Navigation disappearing searchlight tower helps guard coast : Se ee sound compass device aids ships. seve to be aided by expedition to Arctic Navigation Chart—ot bamboo sticks guided carly sailors WE ee Pee ; Navigation, River—bringing back the packets os avy British, in electric pageant hospital ship gives service to U. of the tuture . see ae Needle—holder tor shop Needle Case—transparent, right needle .. Nervous System—intricate model of human Newspapers—save old to spare forests Noise—what it does to your nerves ... Nvursery—rabbit bookcase for children’ s room. Nutrition—why you can fast for weeks and still live O Oats—threshing wet . pn aeatend Obesity—a fat cure from whales __... Ocean depth over six miles found in Pacific mysteries bared by depth samples Ocean Levels—Pacific is higher than Atlantic ee killed by diver S. fleet simplifies selection ot _ ao code identifies .......... ..... strange facts about Oil extracted from coal in improved retort test for lubricating ea Oilcan—handy and economical spout Oil Engine—cooling system for : Oil Fields—located with dynamite and seismograph Oil Shale—vast deposits found in Australia Oil Well courage of workers tested in taming wild well. spiral stem for bit, insures straight hole tamed by cement applied by novel process .. Orange Grove—century-old flourishes in Florida Orchestra—one man plays twenty-two piece Organ pipe, outdoors for park concerts portable console for theater

802 18 983 457 997 $32 254 746 334 639 584 42 107 487 408 514 881 182 118 588 785 24 641 265 666 1042 339 94 ll 402 725 998 233 535 792 587

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90 894 209 290) 377 361 12 28 11 16 41 57 31 37 05 18 02 Ant

eres Ostrich—feathers used in dusters show change m style Oven Regulator—trings alarm at proper temperature 639 Owls—to kill rats in South Australia 274 Ozone—produced from generator attached to elec- eS are erro ee 801 Package Tier—portable, saves time and oes «+ 927 Pail—holding lid tightly .... ase ‘ .. 684 Paintbrushes—hot water cleans old ........ aux ee Paints and Painting airline from paint sprayer supplies worker's eee ee eo ae 923 camera used to obtain wood oes patterns 726 decorating iron castings ......... 840 effective white paint cleamer ............... 1039 OE HI, BSF SF SPR Cat Sew awe rdecsccgies 818 Get DRE acces sccbavas ris aiiaters ag) Gide ak eda oc, hand sprayer for lacquering Pee holder for sign painters’ brushes ........... 689 homemade paint remover paste ............. 668 how China’s war affects U. S. market ....... 202 st SE SY ED on Sib irda vecnc sconces 728 killing alkali spots in plaster walls .. oven BaD making paint cover more area .............. 161 paint gun to reduce waste works in any posi- SD. Stier civ cd dons web ies Me eena ae so we 238 paint still ground by stones ........ ee polish matching auto color preserves paint ... 447 producing marble effects with paint ... cow rapid method of coloring sign backgrounds os striping in white on furniture ..... .cc 329 to paint shingles quickly .................. 332 to protect glass when painting auto .......... 690 two color job on chair legs ......... etal ae U. S. capitol takes 1000 gallon ............. 192 RI eee 671 oe ciiamer MED hab pa hk eGa se cbiee. $51 Pape: lightweight, cool raincoat made of .......... 540 new printing ink to help reclaim old ........ 285 speed tree growth for making ....-.......... 367 Paper Cups—used for funnels .... . 845 Paper Hanging—method of closing a wall crack .. 507 Paper Weight—and five year calendar combined .. 56 Patent Office—queer things in nature's ; .. 810 Patents—increase in British ................ 458 Paving cement tamper speeds ..... wr eee TT a. motor driven pounder lays blocks srt Wilithatodel <9 iat) a rails keep road open during . eer ee Payrolls—delivered in armored car . ehh. ae Pea Sheller—tfits on dish and saves time ; . 568 Pendulum—magnetic suspension ..... VES 508 Pensions—-increasing claims for ........ 114 Petroleum—beliceved to be still forming .. ae Phonograph—Edison’s greatest invention is half ID can nt eat icp i ane ere ew eee nt 203 Photography color pictures reveal deep sea wonders ....... 442 darkroom for the camp ............. 498 filming of county records saves time and ‘work. 223 focusing shield for box camera ...... so+s See how to make a radium photograph .......... 488 kinks in washing negatives and prints . . . 879 pocket arc lamps substitute for flash ......... 355 polish for ferrotype plates .................. 697 rejuvenating developing solutions . ain Photography—Aerial—cannon sized camera has 200 GE PT See iaeé bck eeb evesenecdeneens 265 Physical Culture gauge shows pep of gymnasium students .... 754 handhold merry-go round aids chest develop- EE oleh dee ck we wer ea ans ee hee eae 238 leg exerciser keeps runner in trim .......... 955 mechanical wrestler develops arms and back .. 897 reducing exerciser fits in small space .... 535 reduction exerciser also develops arm muscles. 802 riding anchored bicycle as reduction exercise.. 11 wrists and arms developed with spring gripper. = pupeletegy-—anarvels of human heart ... 120 "lights on keys guide students .... —~ one rollers tor keyboard aid in playing scales .... 532 untuned, cause loss to students ae 754 Piano Case—rustic log features park inn .......... 4 Piano Stool—used as tool holder ... oe Pictures painting with colored sand is art novelty .... 42 scenic wonders framed by window ; sie OOO three ton painting of world war sent to America 41

POPULAR MECHANICS INDEX, VOLUME XLVIII 11- Pigmies—of New Guinea, average height about four

feet Huis wes Pigs suckling, protected by shelf 5 ener Cae ile Driver—giant, drives two at same time 2 Pill Boxes—hinged prevent mistakes ........ Cn Pincushion—made from large cork ........ or Pipe—handy rack for ..................45- . 1047 Pipe Line—large, defies coast storm without sup- ~~ De errr eee pi a a a Cw Pirate Chest—easily made 516 Plane—motor oe, hand plane speeds carpenters’ work 441 Planter—improved, ‘saves seed and increases crops. 359 Plants carrying on Burbank’s work ia , 627 in electric hotbed mature early _ 543 may be used for laboratory Se eee 615 use only fraction of sun’s heat a . 946 Plaque—attractive ship easy to make .. = 341 Plasterboard—cracks covered by areener ~ “ae Cast—make your own re * 502 Plaster of Paris—how to keep soft .. ; 695 Plating—nickel and silver plating by friction 526 Platinum—jfortune waits discovery of extraction oo ee er 536 Paypemns Equipment—parcel chute makes chil: ren’s slide .. 744 Plow electric, speeds crops and kills weeds ........ 624 firebreak, curbs spread of brush blazes .. 26 tractor needs no driver ...... eae. ae Plumb Line—seli-chalking saves ‘worker's time ... 913 Poison—snake peril lessened by agers developed antitoxins .. 79 Poles—‘‘vaccinated” to prevent EE ks eee Police Canadian Royal Mounted oo ——— with plane F 784 hear through walls . mins . ae “Iron Philip’ helps train German 943 rapid revolver reloader aids ‘ 434 summon dogs with whistle inaudible to man 17 traffic, have heater and protecting shield .. 978 trathic, use periscope to trap speeders oe 989 underground to guide tunnel traffic ....... .. 186 Polishing Wheel—side shields for .. 879 Pollen—dust thought to be volcanic ash is pollen. 977 Polo—scooter for grown-ups .... 7 81 Pontoon Bridge—profits from, reward builder 983 Portable Equipment—wedge fastener for .. 324 Potatoes—peeled with sandpaper _. on 152 Poultry automatic switch for house .. i ine Se chicken farm on city root 947 humidifier for the incubator ..... ‘ 490 improved whitewash disinfectant .. 1043 open air scratching shed . ; 137 Uncle Sam’s experimental farm . 595 Power electric transmission lines improved with vacu- um switch “e ee 109 revolving funnel to generate bea re eee, Power. Plant—made from Ford engine 527 Power Transmission—electric, new cable shows progress in .. 620 i Id, serve as schools in Porto Rico use Se Prize Fighting—when they try to come back . 710 Prunii Shears—double-edged makes clean cut 449 Psych —ability to learn increases until twenty. 621 Pulleye— shrinking on shatt - 160 Pump—coil spring saves windmill .. . 677 Pump Jack—gear reduction for a 146 Puzzle—toy furniture set from single block 433 Quoits—played with old tires -.. 605 | R Rabbits fur given many names ‘ ‘ 928 slain in monster drives é cal 921 Rack—tipping, simplifies draining ot barrels. 624 Radio automatic SOS for ships helps sea safety 535 cabinet table built for less than five dollars. 1001 causes of static 838 cost of program may reach $5,000 to $7, 000 an hour 425 desert automobile has receiving and sending | equipment ..... 440 development of marine through vacuum tube $32 how to prevent “motorboating’”’ 825

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12 Radio—continued manutactured weather to tame static 984 measuring flexible cable ; ; 132 more than 1,200,000 tarms equipped with 423 novel fan yee ee tees : 662 portable tester for service men %29 power sets require full line voltage 1013 shielding a.c. line to prevent hum 829 station goes to sea mead 617 switching plug Te ee ee 486 table from sewing-machine stand 134 tester aids service men : 660 to improve appearance ot set 307 tone filter made from Ford coil 1010 weakened by light shining on aerial 912 Radio—Aerials : adapting three tube loop set to aerial 485 adjustable aerial from old Ford part 307 automobile bumper serves as aaa 658 cleaning insulators ie : 1013 danger of ungrounded 32 for wall resemble tapestry 660 high, not good tor tube sets 659 on apartment houses 1011 umbrella . ; en as 308 Radio—Amplifier—resistance coupled power 662 io—A atus ne cut out for B-eliminator 128 base plug for wiring radio receiver 131 “cuprox”’ rectifiers aa Seen 3 electric phonograph reproducer 132 gridleak operated by panel knob .. 129 mounting a portable meter = tips lock themselves in plug .. 130 transformer has variable ratio 134 Radio—Applications " British army tanks carry wireless oxen 4 fire alarm helps protect city sive 768 grid-glow tube controls electric power = loud speaker in orchard trightens birds 983 photographs convey navy orders .. 727 picture larger than life on giant receiver . 7 76 planes guided through storms by lamp 824 power transmission by radio demonstrated 429 radio eyes help to find new mineral fields 240 Scotland Yard enlists radio to help catch thieves 936 street lamps in eastern city controlled by 978 tanks equipped with, direct British maneuvers. 910 thickness ot rubber measured by radio 66 visual signals from ground to airplane = water tank level automatically broadcasted Radio—Batteries automatic switch controls B-eliminator and trickle charger A ne A eee 77 auto-timer cable for leads 653 bottle makes battery filler ; 310 cartridge rectifier for A-eliminator 476 DEES Sas sca snc i ada eee = charging nets 2 eliminating charger hum 486 handy markers for leads 301 handy test board for B 657 handy tester .......... ° fries 1013 installing storage battery in console .. 477 locating B-eliminator troubles 486 new charger is dry _ 1004 new unit recharges B-batteries 483 position of B eorsns ; slid 299 preventing short-circuited battery leads 132 rack holds battery leads be is a. 130 rate of discharge in idle .. 835 rate of drop in idle ; 1003 recharging dry B 1014 selection and care ot storage 658 solderless cable terminals 301 testing B cen ; ma 485 three-barrel hydrometer easy to read 308 trickle charger assembled at home 485 trickle charger from tull-current charger 1011 trickle charger uses rectifier bulb oe 131 trouble in B-battery leads ............... 477 Radio—B-Eliminator combined with power amplifer $29 tapped resistance unit tor 653 Radio—Broadcasting special environments in studios to aid pertormers 433 time card ee 1004 Radio—Cabinets—repairing detects in 306 Radio—Coils : : new reguire no shielding 659 small ecteicatie driven winder 1011 Radio—Condenser adjustable three-gang ........ $36 reduce fan motor interference , i ee POPULAR MECHANICS INDEX, VOLUME XLVIII Radio—Condenser—continued testing mines aes ; twin rotor condensers in gang form .. Radio—Construction compact gridleak mounting copper tubing for wiring 3 disposing of the hot soldering iron eliminating unnecessary leads reamer is a useful tool smali clamp used as a vise Radio—Installation adjustable ground clamp fits any pipe filament-control units simplity wiring making loop connections cae oscillator for testing and calibrating safety first in receiver installation Radio—Loud Speaker building a six foot built from cigar boxes built in globe form - 1004 $10 485 476 310 836 299 301 307 SU1 657 1014 302 649 297 1014 cabinet speaker has eighty six inch tone chamber 299 combined with art tapestry .. combining horn with cone .. demonstrating Ce ee ae ey eee efficient cone, combined with table lamp push-button plug corrects polarity three foot cone for $10 ‘aa when the loud speaker quits re Radio—Pictorial 133, 309, 484, 661, Radio Receiver aluminum shields for standard sets building latest Browning-Drake tour tube set for socket power in important for builder to follow specitications improving tuned R. F. receivers a in box resembling a book light, portable five tube set ‘ loop set built in for cabinet speaker new kit for Browning-Drake set new motor-driven ee nine tube superhet built for $60 safety first in installation shielded units feature new intradyne simplified by multiple tubes two tube set works loud speaker vest pocket crystal ae where to look for trouble Radio—Reception bather hears program by phones in suit better selectivity kink .............. strength of depends on sun time chart for daily programs was Radio—Repairing—cleaning bakelite panels Radio—Rheostats—hints on variable resistors Radio—Transformers—testing ee Radio—Transmitting—sound and images on same wavelength Seishin a : Radio—Tubes adapting short-prong tubes to X-sockets advantage of adjustable plate voltage aid power lines wae ee booster works on B-battery improving filament control light-socket supply for power multiple simplity receivers im overheated filament common trouble resistance-coupled amplifiers specializing ee t tube that lights room ......... ae Railroad Crossing—rollers to prevent accidents Railroads air jack speeds transfer of car wheels crossing Australia to replace caravans .. dam built around without stopping trattic eight-mile model serves English ports engineer is also president of tive mile line engine-location board aids efticiency engine pictured in plants for ann'‘versary fair of the iron horse celebrates 169 years ot freight car dumps from side A a's gas-electric train has small crew inside Arctic circle hauls iron ore most difficult covers seventy miles rail-laying device operated by one man .. record non-stop train runs over 200 miles right of way freed of weeds with push-car cutter savings from junk total millions yearly shields on open observation car ; testing giant of the rails over mountains test line to run cars 200 to 300 miles an hour the world’s queerest ; ihe wes three-light signal lantern aids safety tire heater for locomotives train for Mexican president has many luxuries S38 124 124 $36 301 121 128 $37 307 479 125 1013 132 129 130 1005 65/ 483 831 302 1012 300 655 659 662 393 475 39 306 483 659 "1004 211 944 439 398 946 770 892 554 225 905 922 9S8Y 429 983 409 984 896 794 618 39 te — to -_—s) Railr Reir Rep’ Res] Rev Rice Rive Rut Rut Rut Rut Rug Sac Saf

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1004 310 485 476 310 836 299 301 307 $01 657 1014 302 649 297 1014 » 299 838 124 124 836 301 121 128 837 307 479 125 O1S 132 129 130 O05 657 483 831 302 O12 300 655 659 662 393 475 39 306 4X3 659 O04 30 60 09 44 39 9X 46 70 54 25 5 >? XY 29 43 WY ‘4 6 4 18 iy 7 | ve teteade. > £ 3 i POPULAR MECHANICS IN Railroads—continued train is announced by bugle ............... 735 train polished by tunnel saving hand labor . 58 two-man serves Kansas farmers ; 288 unique, across desert, taps rich mine 544 Raincoat—paper, weighs little and is cool 540 Rainfall—gauge shows record . Satta 801 Rake—improved buck rake ..... ° . 174 Ranching—where the west is still wild 212 —, eliminated from ocean liners ... 456 feeding experiments demonstrate food facts 598 kept away with roofing tar ° wid 844 owls to kill in South Agetralin fo RE pe 74 Rattlesnakes—bought by yard ... 570 Rat Trap—how to make effective .. 146 Rays—grenz”’ ray successful in treating skin dis- ey ee 2 Ea Ge pay Sea oa 383 zor ” magnet keeps blades keen .. 265 safety, blades used in homemade lawn mower. 569 Red Cross—rescues animals during tlood 457 Refreshment Stand—lemon shaped, draws crowd 732 Refrigeration ice-making unit fits old box 575 refrigerating unit operates on cook ‘stove 956 Refrigerator eee ere er 683 electric, fits under sink - on OS Reindeer—furs new industry in Alaska 41 Reptiles—skins used for shoes and trimmings 793 Respiration—loss of weight in breath 277 Revolver—rapid reloader for police .. die Rice—bird proof bike Wie uae 05 : 96 Rivet cueeiiee GOR ois csveaver: «* 523 cutter shield reduces labor and aids satety 994 Road Building asphalt pouring pot ae in waned ing 283 Roller Skates— gliding, are less tiring Are 105 Roof—repairing leaks around chimney 853 Roosevelt—house returns the family .. 884 Rope—coiled in tub is easy to handle 695 Rotary Effects—studied by fast tops spun with air 424 Rubber electric wood filler, more effective than hand 630 from cactus promises lower tire cost 720 new uses for 800 plating process for, improves products 575 wee. new source from African tree 464 replaces metal in many fields ieee eee thickness measured by radio ° 66 Rubber Balls—from old inner tul -s 25 Rubbers—can, make mat for sink . 671 Rubber Stamp—multiple-line, has many | uses 60 Rubbish—bricks from, used for building and paving 472 Rugs—Persian, of “Lost Prince” takes fifty years to weave .. aon wh aa ade 432 Rust—remedy wanted for Rs, 5 cba aa 614 Ss Sack—to empty large heavy, roll over a barrel 489 Saddle—making revived as art in far west 263 Safety Devices and Measures automatic gates to guide street trattic 553 chemical bomb on wall smothers blaze 445 crossing gates shut by train 637 headlamp fits on fireman’s helmet 613 longer whistle toots to reduce railroad crossing accidents ‘ 25 luminous coat saves police from trattic accidents 434 rail prevents accidents from guy wires 526 rollers at railroad crossings to prevent accidents 109 steel shoe guard to prevent injuries .. 50 three light signal lantern for railways oe 39 valve stops backfiring of motorboat engines 57 Safety Pin—used for switch as nt 671 Salvage—old railroad rails make ties 295 Sand modeling in, for children seen ee ‘paintings’ in colored latest art ‘novelty . “2 Sandpaper—to peel potatoes See ES ~s 152 Sardines—putting the can around 763 Sash Pulley—fitted with guard keeps rope in Place 553 Sawhorse—folding, for small repair work 1048 Saws and Sawin clamp holds ony a and knotty sticks 860 electric saw combined with crane saves labor 640 electric saw for butchers saves time and work. 935 guide for saw-log carriage helps save timber 560 jigsaw blade for hard material ; 874 portable air driven saw saves time and work 416 portable electric handsaw weighs ten pounds.. 384 YDEX, VOLUME XLVIII Saws and Sawing—continued to repair a saw handle worn slitting saws make shaper tools Sch in old prisons in Porto Rico portable shipped to Alaska train cooks and waiters for dining cars Screen Door—cork prevents hook marring Screens gnat proof how to stretch tightly tacks for copper : . Screw Caps—device for loosening Screws—to make hold in soft wood Scrubber—electric floor Sculpture uge statues of Washington mark entrances to state » B75 saints carved in concrete for church steeple 279 with beach sand . 726 woman helps carve W ashington head 417 = navy charts bottom for submarines 19 s Arctic fur, are great rovers 759 hunting from the air 555 Searchlight disappearing tower helps guard coast 461 flashes pictures on clouds cae 16 giant rivals the sun in 776 Seaweeds—new industries from California 728 Seismograph—finds place in industry 384 Service Station—like teapot 985 Serving Tray—waterprooting 844 Sewer Pipes—marking position of 860 Sewing Cabinet—building a “Priscilla” 698 Sewing Machine movable stand and cabinet os . 876 sharpening needles .. 678 Sheep—lessen fire danger around oil tanks .. 242 Sheep Herders—palace camp for 465 Shelves—titting to odd corners 1031 Ship Models—build the “Flying Cloud’’ 1021 Shipping—boxes protected by satety clamp 413 Shipping Container—unspillable box for liquids 412 Shipping Tag—made from envelope 161 Ships—building in backyard is profitable hobby 993 Ships and Shipping basin for o1 has fireproof door 423 carrier holds eighty planes 989 coal pulverizer cuts steamers’ fuel cost 944 control for propellers prevents racing - 264 electric beam penetrates fog to find ships 974 engine room ot ‘‘Tampa”’ is cool 624 first turbine cut in two 357 floating service stations for liners ns 914 glory of sailing days still seen in fish fleet 274 guarded from Chinese bullets by rope armor 248 just one more trip 930 lightweight metal to reduce weight of vessels 812 **Malolo” defeats sea on first trip 574 modern’ Vikings prove Ericson’s feat possible 9X8 odd craft disposes of refuse ‘ 559 rat-proofing ocean liners are successful 456 ship that swallows whales is successtul ...... 808 tank ship with double hull keeps cargo hot 199 working the last windjammers 370 Shock Absorbers—tfor farm lumber wagon .. 703 Shoe Pad—air cushion, relieves foot ills 975 Shoes—waxed shining pad saves paste 74 Shopping Bag—on rollers simplifies marketing 623 Sifters—better screen sifters for the builder 350 Signs handling gold-leaf letters $22 how to make porcelain letters stick 499 Silhouettes—how to make typewritten 328 Silk from redwood bark oe - ; 361 fur coats of artificial 16 nearly 70,000,000 pounds made from “wood in U. S. annually 631 Silo—chute facilitates feeding cattle 521 Silver—seek tarnish-proot 224 Silverware—cleaning 154 Skating—fiaming beacon for night "1019 Skyscraper blazing offers fire fighting Aes 3 huge task to care for 766 X-ray picture of shows structure 944 Sleds run by motor driven propellers “s oe 273 single runner for narrow track as 1032 Sleep—how hard do you sleep? .. 529 Sleeping Car—with hotel comferts 50 Slide Rules—remedy for jerky 666

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14 POPULAR MECHANICS INDEX, VOLUME XLVIII Smokers’ Accessories air and water pipe gives cool smoke .. 894 automatic cigar lighter has large gas fount: — | Smokestack—holds auto truck ‘“ nu aac ee Snakes—peril lessened by antitoxin 79 Snow—fighfing on Pikes Peak simplified by tractors 945 Snow Cutter—and blower clears roads quickly .... 813 Snow Fence—portable canvas substitute for boards. 256 Soapsuds—extinguish oil or gasoline fires ........ 753 Soda Dispenser—coin-in-slot fountain insures sani- errr rr errs cee ween 445 Soil ee BO GO gai ioe esc eee cane 172 samples preserved in government library ee Soldering how to use rosin-core solder .............. 473 replaced by connector for electric wire <e Sound Waves—harness music to relieve illness ... 210 Spark Plugs—rock found in bed leads to better .... 210 Spectacles bow on top gives wearer clearer view ....... 897 for race horses SSS pa asides otal gO safety, for sports .. - eee .. 783 with mirrors afford rear. view . oa Speedometer—first was used on Mormon wagon . 719 Spiders—secret of skill sought by science .. . 91 Seisituaiion—trichs of the ghost hunters ics oe Sports aquatic tennis” latest novelty dasa g carci : - 96 putting zip and speed into winter .. 915 runners checked by electrical device eee scooter polo for grown-ups . ; $1 somersault sled introduced in ‘England * “5 464 winter played all year in palace .. 192 Spraying Tower—for thorough work in eae 99 Springs—hot, temperature of water as ain Stable—iattice gate for stock door ... Sen | Stains—removing vegetable ... .. 329 Steam—instead of sandblast to clean buildings . 798 Steamboat—John Fitch invented first coe a0 Steaming Chamber—improvised for wood ...... 690 Steam Power—the romance of ............. vite. Cae Steel - acid test for ET Pe increased use of helps laborer. ar 63 soap from old vee made valuable by enamel remover bales & sai «rw ane Soe to cut a slot in .... ere Te ee 339 Steel Wool—as Goanes repair ; 1035 Steeple—twisted and leaning, rivals Pisa’s tower.. 413 Stepladder—extra legs steady - ... 845 Seaiheniepe—taces auto’s knocks and " squeaks 40 Stockings—protected by mudguards on shoes 18 Stone—cutting with shot be wanes 5 ? 4 Stone Boat—handy improvised ae eee Stoppers—to remove stuck glass . 666 Stop Watch—improved, accurate for timing races.. 431 Store—traveling for rural districts 625 Storms—artificial lightning studied in Berlin labor- ratory hatin 891 Stove—made from oil drum éo Ache Sib 'o- Stovepipe flue in, facilitates cleaning .. 801 how to crimp . ene bik by abode atta das Street Cars aluminum, quieter and save power ; 393 children build as kindergarten lesson .. 782 retired Topeka used as stores and cottages 289 Street Cleaning—armored car reduces dust .. . 182 Street Lights—cleaning nea by telescope ladder 7 aaa ; 737 String—seven mile ball of 922 Structural Engineering —buildings tested in wind tunnel ..... ° 920 Stump Puller—effective one-man __.. fe . 326 Submarine Cable—thrills in repairing 622 —— Detector—adapted to peace- time useful- 635 Queer —than half the ‘world’ s supply furnished by beets ‘ . 200 Suitcase—hoider in in, keeps” garments pressed 295 un most of heat energy wasted on farms ee power from ; ; in ee Sunburn—fancy, with stencils ..... ny os «ies me Sundial curved, easily read meer: ‘17 shadow in St. Peter’s Square tells time ...... 416 Sunshine—what is it? .. 394 Sunspots—help in prophesying weather ne . a Surgery , by means of electric knife 604 doctor uses strange wrersanaede in operation at Ge Si csaasavineeerien . eA ae ‘e 736

Surgery—continued quartz light aids Surveying colored sight cards aid ..... tesa: O47 level rod with thermometer aids in accurate... 73] Swimming—dog-disguised swimmers add sport to ge UL ELE CEC CLE TC PERCE Tere” oe 975 Swimming Pool artificial waves add thrill . dai wate ee floating, safe for children .................. 153 eer ee ee 974 Switch—new vacuum, stops arcking in power lines... 109 T Table casters for kitchen Te eT re combined library and dining : Swi sas mee folding, fits all autos ht 6, dake ee radio from sewing machine stand ; jase Tack—radium-headed, shows door . . 1047 Target Practice—aided by bullets that leave track of fire .. 998 Target Shooting—leg strap helps ‘marksman take PE stcde teh Ghd nae ibd sed wanes 745 Tattooing—experts find new demands for their art 246 Taxicabs flashing lights show movement of ............ 48 muscle test for drivers ..... pw Sse ee ee tricycle cab cuts cost .. es wtans ee Taxidermy—paraftin bath for specimens . 977 Teakettle—steam from, used to renovate clothes 390 Teapot—fitted with teaball has insulated handle... 63% Telegraph electric light ; re _ Teer | lines in U. S. = a peabe Py ee ee Telephone cable like spinal cord : Khas cvegee, Me lock for dial site Geta een tee meter on will reduce idle talk inter ee ee right-handed, for deaf nani eee ton of coal to make million calls ; Me: | FY Telephone Poles cradle for saves work eas ae isdn hae Oe harvesting .. Pa ee ee ee ee Television—what next in? res apes can ] Tem ture at men can stand more heat than thin ..... 891 inside furnaces determined by telescopic instru- SPEER REE ergs ee re regulated by automatic valve on ‘radiator. aa 911 Tennis—aquatic in swimming pool ........... . 96 Tent how to make shelter oh rb inehaagee Bee poleless, easily and quickly put ‘up . 456 self-closing flies for .. Sites = ae tension regulator for 668 Testing—how science guards the things "you use RT 284 Textile Designs—new, acquired by photographing shadow patterns : 648 Theater children’s, on wheels in Baten sae sé 2 expert noise maker for 818 lighting tests on miniature stage aid weed SEE: inno ode as Teer 7 mystery solo with organ latest movie stunt ee ee Theater Chairs—anchor for provides footrest .... 605 Thermometer easily read through anaes Se schatesix .. 96 first, a toy . 762 Throne—valuable Persian, in " public ‘exhibit .. 458 — earth surface like those of ocean nom oes ile handle for carrying, reduces -eemegs reer. more cement in, reduces cost rics eine Bre tcasa pipe carrier for ‘drain fica beh acdelee Timber—no shortage in U. S. en & * a Time—card indicator tells world ........ saawe Bee Tin Sh ena tray for ........ stad .. 169 Tissue Paper—protects hat repens 137 Toaster—rapid action, electric ae eee 813 Tobacco—process for synthetic reported by German NE 0h hs PAR i sie inst ds ws wah doo ck & & wh 592 Toilet Articles—backs made from ‘fish ‘écales .. 59 Tool Bits—doubling the life of ............... . 867 Tools bushing compressor . Cr eer 865 drawer chest on truck holds Ba Sata 526 handles for, from umbrellas ........ 144 holder makes gauge of scales .. .1040 Japanese woodworking ..... ha 4 ieee, ee shaper tools from worn slitting saws sateen ee simple cutting, renews motor-valve seats .. 647 ee nae

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Page 15

683 500 540 134 1047 998 745 246 $91 582 911 96 135 456 843 668 284 648 799 818 541 605 16 762 458 943 361 367 697 974 120 169 137 $13 592 59 867 865 526 144 1040 414 169 647

at)

Midas ont ontolnt Tools—continued spring clip for depth gauge ..... seserees SAB wedge fastener for portable equipment i a ai 324 Toothpaste—cleaning out SE: 6s nce 303 ws iovenee Top—tastest spun with air ... ete xke: ae Torch—operating cost reduced by ‘use of city gas in cutting RN Se ecco rears oeces 112 Tornadoes-—occurring in the ‘U. Ss. 938 lowel Rack—slides under drain board 151 Tower—Siamese built of salvaged crockery F rontispiece July Tower of Jewels—musical, feature of exhibition (Cleveland) Towline—automobile, ‘kept from sagging ‘ 118 Town—moved to permit building dam 80 Toys balloons made in many queer shapes ; . 8 child’s horse and buggy run by pulling bridle... 272 cycling clown amuses the youngsters .... 330 eight-wheeled wagon will not upset .... 539 electric train comes apart .......... 616 scooter, wagon, sled, etc., in one ..... 561 two homemade, for Christmas .. ..1033 Tractor lightweight for farm reduces —_ and cost 433 removing heavy wheel ..... piawe $75 Traffic d automatic gates at street intersections —— ee > s<c0ns See dummy policeman directs tourists .. 472 light cells as policeman to regulate Se mirror prevents auto accidents at gateway ... .1042 problem solved by overhead crossings . 616 sign for color blind invented by woman 106 sign in silhouette is more easily read . 973 Singapore policemen carry signs on backs 928 tunnel, underground police to guide ...... 186 Transportation east meets west in traffic in India ee from stagecoach to the latest express plane ~» oe to be aided by bridge across Grand Canyon 449 Trapping hake makes trap safe ........... . 507 skinning small animals . 499 sport of pheasant trapping ........ 571 Tray—acid, for tin shop 169 Treasures—old ioe found under Bank | of Eng- land wack aaa oe 770 Tree Felling—axmen in ‘tree-felling race furnish eee ieee vir eb ial an Trees braced by grafting to resist wind .... 465 cavities filled with cork to check decay 545 chenae fruit of walnut, by grafting 953 dwarf, a possible substitute for briar 947 huge fallen Sequoia used as g4rage 559 motor driven hole borer helps in planting .... 64 old stump as giant umbrella shelters garden seat » oe protected from insects by chemical injections 378 protecting young fruit ............ccess 1030 valuable, guarded by lightning rods . 709 with smooth bark more exposed to lightning. 567 Tree—Stumps—removed with acid 422 Tree Trimmer—insulated against against electric eee 223 Tricycle—seagoing speed 10 miles an hour a 356 Trolley Lines—poles of flexible concrete for use on. 409 Tropics—conditions of reproduced in test chamber.. 784 Truck—hand, loaded by lever 798 Tube—gas filled control promises many practical ap- plications 59 Tugboat—cheaper to operate oil- electric harbor tug 51 Tungsten—weight of b 818 Tunnel—for polishing train saves labor 58 Turkey—feathers replace ostrich plumes .. 771 Typewriter Ribbon—sealed box keeps moist 120 Typewriters brilliantly colored ................ ‘ . 897 folding cover prolongs life of ~ Fon U Ukulele—a ~\ phased said to have invented ~—e PR hios ais ie So Ne Pe eens 50 Ultraviolet Rays pass through permeable clothing 247 reveal secrets of fossils ...... 753 Umbrella beach, new auto accessory 377 handles from for tools 144 used to teach life-saving 150 worn on shoulders leaves hands free 709 POPULAR MECHANICS INDEX, VOLUME XLVIII Vv Vacuum Bottle—repair for cracked Vacuum Cleaner—for railroad bed Valves—scouring brass ball ..... it Valve Seats—renewed with simple cutting tool Vaseline—cleans commutator ........ Veneer—made by slicing blocks ...... Ventilation fan hidden in light fixture for better .... hinged windows effective in south made-to-order air protects pictures in museum Violin—trestoring tone quality of ... — Bow—has ball bearings for easier tightening model maker’s ........... spring opener for .. Vision—affected by overeating Visor—for women’s hats shields eyes Vitamines—cow makes own .. : Ww Wagon a en brake handy brakes for : loaded with dumping boxes Wagon Box—as raft in army maneuver Wagon Tongue—ladder made from Wagon Wheel—how to lift isang Wall—protection for behind gas stove Wallpaper covers cracks between plasterboard . rare old, moved on plaster to new house removing damp spots on oa Walnuts black, husker cleans bushel in five minues butterflies help save crop in California Walrus Whiskers—dealing in, one of queer trades. Wardrobe Chest—attached to bed .. Warfare—cavalry horses to be dyed to combat air attacks ‘ Warfare Maneuvers—soldiers form ne signs to guide airplanes Sey Wasps—to keep from beehive es Waste Paper Bin—fits under desk Watch converted into traveling clock by leather case. how to care for pia kaiate Bis how to demagnetize lifetime of ..... . odd private collection runs three years without winding tells world time and predicts weather Watchman—night, school for ‘ Water cup turns breath into for airmen pressure of . supply kept pure by alternate rain and drought Water Gauge—old culvert pipe makes inexpensive Water Lilies—raising millions of .. : Water Pipes—thawed with brick torch Water Pressure—of water column Waterproofing—Congo natives use fish glue for Water Supply—horizontal wells save expense in.. Water Tank emergency built on root heated with electric belt Waterways, Inland—bringing back the packets ... Ways—for filling pits in varnish on piano Weather calendar for recording of hundred years ago affects glaciers prophesied by study of sun spots the mystery of unbearable cold what to believe about forecasting Weed Cutter—for railroad right of way Well—horizontal, saves exxpense in water supply. Whales a fat cure from cut Alaskan cable tagging million dollars in oil in three months ship that swallows whales is Aeveuemees thrills in icy seas aoe , Wheelbarrow combined with ladder .... guards for handles for close quarters rubber tired life of freight car six and one-half years progress of shown by ancient Chinese chariots tests show what size should be -1019 - 615 489 67 170 647 703 47 38 170 648 217 489 697 9RY 540 1046 351 174 117 . 625 593 332 21 68 439 823 393 365 875 360 1044 601 1036 499 429 823 492 769 35 "1048 98 279 51 219 733 983 - B23 881 193 187 472 808 75 331 874 1044 33 97 280

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16 POPULAR MECHANICS INDEX, VOLUME XLVIII Whistle—worn as ring always ready tor use White House—putting new roof on Windmills coil spring easily starts Dutch, decreasing Window Awnings—side- -pull fold in small ‘space P Window Lech—allords thett nee and reduces rattle ee ee os on Windows cleaned from inside through inset pane cleaning with chemical rag ‘ hinged, effective in south show, protected against shutter squeegee and spray save time in cleaning sun box in, for baby : to put in new glass Wires—tested by apparatus lionth of inch a Wire Stretcher—two pairs Wolves gray vanquished hunted with dogs carried in special car Woman wins fame as map maker fitting to right career Wonders—age of still in future Wood—antique finish for new secured with solution Wood, Kindling—safety knife for splitting Woodpeckers me Bm power lines’ poles Wood Rot preventing in posts ° process for preventing thievés b y falling which measures bil- handled fence re- simplifies 407 357 Wood Trimmings—platiorm for loading Woodworking heat aids Japanese tools for toy shop is designed for practical use Wool—from Angora rabbits Workbench—clamping small work to World War—three ton painting sent to America Wounds—application for small ‘ Xx X-Ray Camera—new control aids in diagnosis X-Rays aid identification in crime detection astronomers believe stars are source of discover liquid hidden in hay bale uses of, in industry e Y Yosemite Falls—framed in high hotel window Z Zoo animals’ health guarded by constant temperature , London, scenery painted for animals in painting scenery for lions in New York stocking big ‘ - ‘ maintenance of