Popular Mechanics 1930: Vol 54 Index

Page 1

POPULAR MECHANICS MAGAZINE WRITTEN SO YOU CAN UNDERSTAND IT WANTED- ~ An INVENTOR Page rele)

Page 2

News ...if you drive ¢ Ford..... Hudson A oe us De Soto Dodge | 4 new grade of Mobitoit iQ " Advert offered to scientifically — Essex Reo meet the lubrication por problem of your car... ' . o _ ——————— — ———— ] \“ [ Agric | f I — sa ? : ; q Make this Chart your Guide i | In the cars listed above, and in certain models; t : | ° . » Agric This abbreviated chart shows the correct grade of Gargoyle other cars listed in the chart at the left, we recon } | Mobiloil for most passenger cars. You will find the cx mplete | e +) ef +99 Mobiloil Chart at your Mobiloil dealer's. mend the use of the new Mobiloil “AF”— | S==EEEEEEESEEEEEEI GREP TFonen ere rieen errrmaen cameramen Beeause—it will stand up better under th iii | 300i 1929 | 1928 | 1927 i : ee = wasesop | Engine | Fnpine | ing F ogine | higher engine temperatures of today’s fast driving Ait PASSENGER s Tere l ett —— } © © ’ t Airpl | |] — elele|ilelzielz and last longer. d | —_j4{slalsisisisls i | tay ors rary Fer Because—it is heavier in body than Mobiloil “A’ bri BB BB | An | BB | An.| BB| A and lighter than Mobiloil “BB”. Simcha lac ale | a : ' | A Because—it is made by the makers of the world: | BB 4 2B RB Ay d , ' AF | Ave. | AE | A A Ar leading quality oils. j ‘ F iv’ ‘ PAS 2 be . \ ‘ | A are | ALA Because—it is the result of thorough engine ani | sc } t 8 Be x ”™ As ry ae ; ‘ | AE | Are | al Al A | A | Ar lubrication study by the most experienced staff oi | | I | ; ~ | : ae . . . . . 3 | wi | Ae Bi BB | Arc | BB Ar lubrication scientists in the world. : | | | BB | Arc} BB | Ar BB | Arc | BB | Arc Tap ‘ t ' | BB | Ar Bi | as Sp tan} Because— it is made by the vacuum process in the 4 i AF | Are A Arc | A wc | AJA . - ; H | BB | Are | BB | Are.| BB | Arc | BB A world’s most modern lubrication plants. i 1 | ‘ BB | BB | Arc | BB | A ™ . ’ . eS So LAF IA AF a leek we ia Because —it is made from the world’s finest 4 id | } | AF 1 A | Arc | | > °,° ; “— jam \* : | cli crudes, selected by the outstanding authorities 7 Nash T g +”, | . e nr ° ° vAdv.6,5p.6,Twinlg.6 } BB’! Are. | BB | Arc.| BB BB | A on scientific lubrication. oO { | Ar | \ A A |A | i Packard: A | As A | Are | A | Because—it sells at 30 cents a quart (35 cents in 7 | Peerless 61, 81 AF | Ar | | ~ whee | wlaclwicl dlZlal: | | Southwest, Mountain, and Far Western States). | f ath A Ar A Ar | } ates 4 “ 4 Are | A A A ° Reo all models) « - | AF | A | AE | Arc.) A [Asc | A JA | Add to the performance of your good car, the im- | | wi I peo BB | A | BB | Arc | BBA | : . A 4 Wricnee ter males | A [Are | A | are |] A | ae | A | A proved performance correct lubrication can give © | V illys-Knighe | ao - ’ BB! A a] a ° ° | Windsor 6 s| Ar {A | ar | Are | ke it. Let your Mobiloil dealer drain your crank- 4 d BB Arc BB Arc | | a A : > | | | | | || case today and refill with this outstanding new I lubricant. ; ns ae aenennanS ee ae sel ies cia en VACUUM OIL COMPANY|) I Makers of high-quality lubricants for all types of machinery 4 LOOK FOR THIS SICN “4 q € e ee °° @ ft 4 . fi q | F

Page 3

dels, recol ler the lriving ' oil “A” world’: ne and staff o in the finest orities 7 pnts in States). | the im- in give crank- ® ig new “x LN Y] achinery INDEX TO VOLUME LIV A Acids—soda protects shop floor from 879 Acoustics clothes absorb sound 928 lead coat on theater wall improves 976 Advertising slogans are written in water on sidewalks of Spain 254 voice on wheels helps draw crowds to theater 708 Africa single-wheeled bush chair used for taxi service in waterfalls higher. than Niagara found in. with the devil dancers ‘ Agricultural Implements farm-waste chopper helps improve the soil harvester cuts corn, shells, cleans and bins it queer tractor does work of six horses tractor-drawn shredder for vineyards. . Agriculture farmers produce wheat in fathers did in hour insects help save nut crop new jobs tor electricity found Air—treasures from the Air Mail—planes’ total mileage twenty four million Airplanes aircraft stream-lining air-filled bags save planes in water landings airplane-automobile e airplane finder locates planes i in ’ flight are found at night by glow of exhaust . artist’s drawing of U nee Burnelli transport plane opp. attached to auto aids in training ‘pilots . beryllium to solve plane corrosion captive, gives all the thrills of flying carrier pigeons on, for aid in ne: minute as grand- on farms catapult tor launching planes.. clutch for windmill plane “comet” is built like giant box kite. compressed air is power for eight foot plane electric model flies and lands itself engine fitted with wings seeks speed mark expands to fit load . : find copper ore five-year old plane flies — the Atlantic. fly —— leaving ground in compressed air ane 6 Solan weatherman gathers data from. gale from propellers stops grass fire glider converted into plane ... hidden faults in, revealed by “‘stroboglow” hitched to dirigible by hook in flight.. hooded cockpit helps pilots in blind flying how you can tell a plane by its silhouette increase in private planes in Great Britain lands on motorboat at forty-mile speed lights on wings show pilot height from ground Lindbergh picks plane looking down on Uncle Sam’s latest bomber. low-wing metal monoplane develops high speed motor vibration is detected by use of egg one motor to fly as fast as three do now.. parachute to land plane when engine fails plane in flight takes fuel from speeding auto plane propelled by rockets powered by outboard motors have made several successful flights ; radial engine for model radio from plane. goes half around the world rear-view mirrors aid pilot sight tail ore gun resembling vulture to soar like a bird .. rout wild horses run-up blocks for the safety-belt latch opens instantly sixty navy planes ‘““battle” with mother ship sketches of Curtiss “Tanager” winner of safe plane contest 241 807 730 928 762 282 896 359 806 419 588 464 526 977 891 895 914 881 208 710 283 593 389 715 601 330 252 926 272 821 708 288 193 784 894 32 182 469 552 776 87 426 803 273 7 569 32 752 960 940 271 498 558 568 561 987 527 Airplanes—Continued slashed shoe shows power of propeller sound of, shown by tests speed increased by retracted gear stabilizer control for model stunt — help racer keep track on laps telltale vapor of, turned into water tire tester shows safe landing epnynnnt variable-wing monoplane voice from sky carried by horns on plane wind motors prevent nose dives wings for all of us with rotating wing acts as parachute. Airships air yacht has an automobile cabin balancing in flight big problem blimp lands on liner’s deck to take off pas: senger “cornerstone” of huge airship raised into place 22 feather-covered dirigibles predicted for future grabs mail bag from speeding train. portable mast for os decreases ground _ crew ... ; Fy six million rivets in sketch of latest type dirigibles wingless rotor aircraft successful in tes sts Air Traffic block system for airplanes run by radio tele phone . giant air vac -he will carry eight passengers searchlights halt trains in emergencies Alphabet—letters pictures of mouth in original Aluminum—satin-finishing Amplifier—for the violin, cello or viola ; Amusements—floating night club amuses visitors in Venice Andree—arctic mystery of fate Animals dentistry aids in finding causes of tooth decay hunter tells how gorillas are captured in America fifty thousand years ago " island home for monkeys at Cincinnati zoo “mercy” bullet brings sleep instead of death in capture of “merry-go-round” exercises stock muskox herds for Alaska rare, are found in wilds of Abyssinia sure-catch snare for wolves and coyotes. Animals, Miniature—made from pipe cleaners Animals, Wild—queer and curious facts about Annealing—-steel tool quickly . Ants black, are good fire fighters checking work of .. houses ridded of white, by mang their queen pill box makes good trap for Apple—theft-proof is bitter Aquarium and special Pullman car built to transport fish food trap for 5% grotto, coconut shell makes Arbor Press—quick return for Archaeology American Pompeii in Arizona : mystery veils old pyramids found in Mexico palace on top of bible city to be excavated solution of Mayan mystery the hunt for the lost Atlantis the mystery of the mounds Archery ® a modern Robin Hood te as water sport makes fun for divers miniature field vies with small golf course sport with a cross-bow , Architectare—church like giant pipe organ Arctic—was once temperate but never tropical Army, a -average age of pilots of mooring mast for solved. ‘ Arm 4 Sochins down on Uncle Sam's latest bomber 367 967 551

Page 4

Army, U. S.—Continued mortar railway gun to aid in defending coast 951 the “West Point of the air’ Art caricatures in wood carvings on oak tree Asbestos—tireproof cargo pouch underwent success- ful tests es “At As) Bin—for the basement eee ee Ash Can—swinging door for, keeps dust inside Ash Tray—and parlor putting golf set combined Astronomy —_—_ tells time of day and position from brings stars nearer. show skill of artist “big. *bertha” gnat’s wings help to record heat of the stars : how stars of the big dipper are breaking up imaginary flight to sun pictured by scientist measuring temperature of stars and planets search for new stars aided by mirror telescope star structure like egg is theory of scientist ae <~ | Sune ~— up does the anenpaes | —- RS pats wean en . Atoms huge towers draw aepining to smash. models of ; ; Automobiles anti-riot car shoots water from armored tank.. are turned in street by turntable auto converted into yacht.. te Oe autoists do banking from their cars. black has succeeded blue as favorite color bullet-proof car for police has armored front cold gas promises to increase power of. concealed radio for, easily installed down safety lane .... electric, as caddy serves crippled ‘player. extended starter button filling the vacuum tank first American midget car rune at high speed gilded throne in, + et to | Pius’ hoists self from ditch e« how to build that cycle car jars of walking are guide’ to auto comfort kit makes radio receiver for ‘ lamp prevents freezing of radiator. license plates tested in weather machine midget cars next? .... , ; one of world’s first autos paintless autos seen next in rustless age. preventing accumulation of water in gas tank pulling out of mud racing car carries lion cub as extra passe nger ride on mules backs into foreign lands ; riding quality shown by spring tester. rubber ough ends squeaks in bodies starting car in cold weather = that floats, submerges or flies in the air to prevent children sounding horn unequal distribution of load may cause Gamage wax and polish prevent auto sunburn ‘ will steam, ever come back Automobiles, Accessories air cleaner and valve oiler combined alcohol dripped on windshield prevents ice all doors lock at once by pressing button bumper saves lives of pedestrians car starter, lights and horn pene by one button shea ; F card file for salesmen celluloid curtain shields’ RR Cia ows wh chair for baby has adjustable legs clothes rack attached to auto top POPULAR MECHANICS INDEX, VOLUME LIV, 49 180 751 617 176 275 993 615 161 918 637 1028 coach converted into sedan with a movable seat 469 coat hanger keeps clothes tidy combination lock for spare wheel is theft quoet cushion for driver insures comfort : dog cage fits on trunk rack.. door rattles stopped with air cushions dustpan ventilator extension for brake lever facilitates operation extension luggage carrier has —_ — flag waver for auto folding bed fits behind rear seat. folding table also serves as footrest footrest and folding table for fountain-brush washer attached to garden hose gasoline tank cap, quick-opening ; hookless fastener used on radiator cover key inserter fastens valves with little effort. . 951 119 313 821 911 497 966 4 65 8 400 998 414 510 "1032 103 1930 Automobiles, Accessories—Continued knotless towrope easily attached... 289 lock for seat protects tools.. oe BS7 lock on auto gas-tank cap also protects car... 101 oil cooler for model-A Ford 1050 propeller makes ornamental bumper.. . 686 quick-operating jack 861 slicker for the rumble seat ‘keeps passengers dry 46 speedometer on rear of car 762 splashers for wheels protect finish ‘of car..... 729 strap handle for starter button .. 852 supercharger for small car increases: accelera ae ee ae ore 960 waist and ankle clips hold robe in place. . , wee Automobiles, Design aircraft lines add to speed and power ay airplane-automobile ‘ens x0 ganda . 891 body is free from rattles and squeaks 442 built from old parts of a score of cars..... 616 latest improvements give more comfort... 594 sunshine roof admits light and air......... 800 twenty-five foot, seats six pasengers ‘ ore Automobiles, Driving air retards speed of autos i 273 air supply in Fords at high speeds. ota dine 515 electric brakes add safety to ... 471 gearless control uses only one pedal... 74 halt careless drivers with lines of light.. 283 loud speaker gives verbal warnings ae mirrors at street corners aid ... 449 old mop under the wheels, gives traction - -1035 rear-vision lens for auto gives better view oe roller shade on windshield to stop oe ; 95 so you won’t feel the bumps ... “er 276 speeders caught by camera... 109 telescope with stop watch helps catch "speeders 288 Automobiles, Fuel 1035 with diesel engine 200 blowing into the tank starts this siphon crude oil seen as auto fuel Automobiles, Lighting service station on wheels an ; 982 using spotlight for backing light - 1036 Automobiles, Lubrication aids tu lubrication of Ford. .... 340 one-hand pump makes oiling easy 746 Automobiles, ae eetery paint striper rolls lines on autos..... . - 249 Automobiles, Racing eyeshield for racer, replaces goggles . 26 light rays from auto lamp time cars eat 375 Automobiles, Repairin adjusted Ford ee A steering gear 866 balls in brake drums cause noise 349 car-window rattle stopped by channel fastener Re elastic supports for door pockets - 25 electric hammer for fender, irons out dents 7 14 eliminating squeaks from Model-A Fords .. 838 first-aid car for motorists.. 272 Ford valve guide removes carbon from valve. . 1047 handy jig for pulling down a bent fender 173 heat treatment removes deep auto dents 1049 holding windshield wiper out of way. .. 851 remover of grit is timesaver in valve grinding 647 removing spindle-bolt bushings -1053 replacing valves ... 174 rubber disk catches valve reamer cuttings. ..1048 straightening spring bumpers .. .. 870 tightener for auto spokes does task quickly. 736 tightening spokes on wheel ends auto squeaks 3 toolbox under driver's seat 3 673 tool for cleaning piston-ring grooves 174 tool for removing broken axle. .. 698 tool for removing valve guides 700 tools for removing broken transmission keys §23 wrench for removing headlamp rims 673 Automobiles, Tires false economy to purchase cheap inner tubes.. 145 finding leak in inner tube 336 flat-tire warning sounded before damage is done 968 fruit picker made from inner tube........ 862 old, aid road grader <= 522 spare tire on swinging arm ‘ a 985 twelve feet high weighs two tons 765 Automobiles, Trailer cars loaded at angle to save space ea 366 expanding, gives home comforts coe 625 to prevent sidesway .. 382 Automobiles, Truck cruiser goes over mountain on a truck trailer 576 portable welder run by auto power 739

Navin! Bevin 2%

Autc Avia Awn Babt Bab! Baby Bact Bag! Bald Bale Ball. Ball Ball: Ban! Bart Barr Base Bask Batt Beac Bear Beat Bees Bees Beet Belt; Ben

Page 5

me iler 366 382 576 7 ea ie ge Automobiles, Truck—Continued screen guards driver from balls on golf course 445 Aviation air currents force weighed as aid to flyers..... air harbors beneath ground to protect war planes ipeuk cbnohee sud eases Us eure’ 14 air-law violations are increasing Kiet we tereere 629 airplane in slot machine teaches flying .. 766 average age of army pilots ‘ 819 aviators avoid bad weather at six-mile altitude 24 —— B csanprseet aerial, will guide night on breaking ‘the world’s blind-flying record. 529 fireproot clothes used by British air forces. . 213 flares as weather signals warn airplane pilots.. 395 flyer thrown in air is caught on same plane.. 358 giant loud speakers report air race results..... 775 I solo in sevem Whours .........-- cece csecee 618 l wit tl Sn caS kek s 056i Ore ah e008 754 insurance plan for aviators aids clubs. 806 th ae ee 420 learn to fly in eight weeks average time.. 112 loss of airmen is “7 on ore deposits..... 609 man-made star guides flyers... 941 miniature airplane powered with model gas engine oh 79 one-way traffic for planes over London =e 981 over the hell stretch 259 pilots’ monthly pay over five “hundred dollars 8 rake used by Orville Wright for altimeter... 775 robot air pilot keeps plane on true course... 950 sailing the skies with radio on air liners... 356 seaplane, German ship ““‘DO-X” world’s largest 782 seaplane used by life guard in rescue work 219 servicing record endurance plane in air. .opp. 353 smoke screen routs insects which aecencol Givers ...+..% 737 special pier for air ferry ‘speeds bay ‘traffic 105 the high flying mechanic .906 the “West Point of the air” 49 training in cycloplane helps student flyers 608 what the clouds tell flyers 90 wind tunnel makes its own flying weather 978 Awning for business street protecte eeappers 569 shutter stops wind and rain. 752 B Babbitt—improvised pinion of.................. 704 Babbittin —hints on . .. 872 Baby Crib—‘“gym”’ provides exercise for baby “+ eee Bacteria—microbes found in coal -« 940 Bagnell Dam—lake to cover town on site of ee Baldness—caused ‘by arsenic and lead is curable... 939 Baler—for old newspapers a tying 257 Ball-Bearing—changing, fit : : 348 Balloons candles in, banned as forest-fire hazard 576 draw surfboard and rider over water. ; 4 how high up does the atmosphere extend?... 983 supply city’s gas... 759 to go up ten miles with two ‘passengers 637 Ballroom—confetti fountain for the 145 Banking—autoists do banking from their cars 13 Barber Shop—children’s —- chair for 851 Barrel—detachable shelf for 690 Baseball—millions of candlepower for night 531 Basketball—coin-in-the-slot 987 atteries—storage, placed in vacuum have ‘greater capacity 191 Beacon, Lindbergh Acrial—will guide night flyers 738 Bearing—self- lubricating usec chemical for oil R02 Beauty Aids—modern woman’s, supplied by mines 800 aoe treme keeps covers off injured foot 1035 ees go thousands of miles for one pound of honey 6v6 good-natured stingless produce white honey 112 Beeswax—makes better lubricant than white lead, oil or grease ; 154 Beetles—lady, raised to war on citrus scourge » Belts joining ends of .. 691 when ~ penne ont them on the driver wheel ; 3 Bench Grinder - drill sharpener is attached to 999 POPULAR MECHANICS INDEX, VOLUME LIV, 1930 5 Bicycle coin-in-slot locks for, chain wheels to curb 73 with glider wings gives thrill of flying 247 Billiards Oe ee GS ndvccdesocceusece 896 and golf combined on minature course 746 oval table offers difficult shots 533 passing hundred balls without a hit........ 46 Binoculars—dime-in-slot, give view of city 574 aoe House—for wrens made from flowerpot 852 irds confused by city lights...... 892 eagle’s flight, secrets of, revealed by ¢ camera.. 190 fly — than airplanes aided Geo até 766 = sight for birds in flight. arta 938 ighthouses are illuminated to save lives of 713 most beautiful, saved from extinction by law.. 210 owls fight ranchers’ DE. sh a.vaws «de . 592 squirrel-proof feed box ..... 1026 trek of chimney swifts still is my stery 897 two miles a minute speed of swallow. 823 Blackboard—made of glass............... 768 Blacksmithing—bulls are shod like horses 961 Blasting—steel net guards motorists from rocks in 417 Boats and Boating adapting an outboarc motor to a dory... 838 American yacht-race entry takes to the water 3 auto converted into yacht...... 938 barges with pointed bows operate in clusters. 887 bicycle-canoe is driven by pedal sidewheel 5 boat-race starting clock fires off cannon, 419 boats race in swimming pool without moving 119 carrier for submarine takes boat through France 560 carying folding boat in auto..... 680 cruiser goes over mountain on a truck trailer 576 electric-powered towboat takes to the river 417 float shows location of sunken boat 158 floating — club amuses visitors in Venice 7R8 folding boat easily carried on auto tvs trailer glass-hottomed hnat crawls On 426 guide block for anchor rope has En grip 561 log - aid in getting canoes past dam 136 model of German battleship features boat show 461 motorboat like torpedo will not sink. 457 motorboats for self-use on park ponds. ‘ 388 motorcycle engine for boat ‘ 146 outboard merry-go-round latest water sport.. 450 outboard motor drives real “Leaping Lena’’.. 129 outboard motor propels two canoes 334 outboard motorboat speed record... 969 pontoon- -hydroplane promises higher speed.. 575 “Popular Flyer” a racing hydroplane 484 portable boat carried in car inflated soil exhaust 220 races revive old whaling days 786 racing boat like flying fish . 729 rack for outboard motor boat 510 rigging a sailing canoe 500 “Roamer” a speedy outboard cruiser 666, 840, 1018 robot to steer motorboat on ocean voyage 895 scenes on board an American cup defender 543 six-foot model of a hydro-speedboat 897 speedboat wins its weight in prizes and trophies 193 spray dust from motorboat to curb mosquitoes 86 submarine on wheels used as rum runner 760 waterplane and speedboat offer aquatic thrills 533 world’s record for outboard motorboats made at Fox Lake, Iil.. ‘ 544 yacht’s speed increased by air science. 574 Boiler—transverse pressure on, is double longitu- dinal pressure 596 Boll Weevil—and weather data foretell cotton crop 417 Bolts newly tapped hole should be oiled before turn- ing bolt into it 515 with spring effect saves lock washer 96 Book Ends making a pair of hand-wrought 1944 monogram . P ° 674 Books—‘“‘totem pole” made of, attracts customers 875 Boots—demand for cowboy boots keeps firm busy. 183 Bottles Capper also serves as container opener... 181 holder for dipping baby’s bottle in hot water 154 rubber stopper for withstands pressure 913 threads inside neck for scicw ton stopper 816 tube helps to empty quickly 156 Boxes nailless bands for, reduce shipping costs 219 packing, skid for heavy . 691 Box, Miter—hinged, can be swung out ‘of ‘way 348

Page 6

Brazing—fiux for Bricks } hollow ventilating, circulate fresh air that interlock laid without use of mortar Bridges arches floated into position auto frame used as * giant of world’s, rising in New York largest arch, closed Sydney, Australia many miles ‘of wire carry weight of : memorial, stone-block eagles weigh two hun dred tons each for .. ‘ painters on cables, like human flies skyscraper, to span San Francisco bay wire as long as halfway to moon .. workers’ aerial shop suspended from crane world’s longest arch span in Kill Van Kull Brush Cutter—run by tractor clears new land Building Construction bone-dry building to keep out dampness Liege fair reflects latest building trends. low-cost concrete blocks are weather-proof sanitary base shoe is better than baseboard skyscraper walls of metal herald new building age 57 came ee Oe squaring a tapered column windowless offices to end dirt and noise. Building Material brick veneer helps in rebuilding home corncobs make good insulation Building Paper—holder for : Buildings apartments built in circles.. Empire State building, New York City huge office structures run like a small city whole city under roof in new terminal POPULAR MECHANICS INDEX, 323 791 80 913 685 464 778 603 world in minature shown in lobby of New York 587 Bullets, Hydrogen—at a speed of 37,000 miles a - second ‘ ee si) nua ape yl erica eee Burglar Alarm—takes photo and sounds warning Busses equipped with radio to entertain passengers in yoo my | equipped with visible fenders to guide driver ..........0¢ scenic painting on, advertises its route Butter—no churning making, by centrifugal process Butter Cooler—without ice acts by evaporation. . Butterfly Wings—photograph selves Byrd, Admiral—at the bottom of the world with Cc Cabbage disease remedy for shower baths for tar-paper shields. foil maggots Cabinetmaking—a small drum table Camels hotel carried over desert on hacks of shipped by airplane across Mediterranean Camera aimed like guns for air photography identifies diamonds to foil gem thieves.. making ‘“‘close-ups’’ with small secrets of eagles’ flight revealed by small, easy to convert for aerial use soundproof, weighs but weed -seven pounds. speeders caught by ry : swinging holder for - ‘pie Camera, Stereoscopic—cheap box cameras take stereoscopic views , core Campin broiling fish over campfire . gas oven makes running-board icebox. gasoline-saturated sand makes good campfire. “idling” a camp stove ts lights of automobile draw insects away from tent portable boat carried in car inflated by exhaust preheating camp stoves quick boiling for ridding of flies . salt shaker for the camper shelter made from large umbrella ++ Canal, Harlem Ship— laying wiring under, tests engineer’s skill Can Hold«:—tor household cleanser cCannon—made of silk thread Cans—storage bins from empty Canvas—waterproofing with paraffin 799 208 ~ = 00 wr Noun tromweuw UwnNa 1014 VOLUME LIV, 1930 Cap—soldier’s, marks entrance to military camp 220 Card, Picture—has phonograph record . 451 Cartesian Diver—diver submerges only at master’s -1029 Car ‘Wheels —oi wood for London's subways are noiseless .. : 37 Casehardening—with cyanide, do not heat above bare red .. ain ; ; 700 Castings—celiminating pinholes in ..1030 Cats clambering up building attract passers-by 263 what science knows about your... oe 82 Cathedral five-foot model of cement and sand 183 lion roars and cock crows from tower oes) Bae Cattle—bulls are shod like horses. . 961 Cementing—glass‘to metal... rs ‘ 690 Chairs rigid, are nested to economize space 221 rocking, inclosed in screen — from in- sects o- single-wheeled African taxi run 7 man power 241 traveling, aids workmen . 340 Chalk Line—can be snapped easily by “the teeth... 317 Chandelier—neon tubes give almost white light... 946 Checks alteration of, shown by ultraviolet light 942 light for examination, detects forgeries. . 775 picture of writer on, prevents forgeries 191 Chemical Element—new, is radioactive . 96 Chemicals makes curtains and drapes flameproof.. . 641 useful, from water in oil wells.. 181 Chemistry great opportunities of future seen in . 384 touches all life making living easier mg 636 Cherries—seeder for, handy tool for canning time . 823 Chewing Gum—substitute for, produced from ben- | 2 a See 715 Children adhesive tape on soles of new shoes prevent baby slipping ive sas CF animals depict music notes to teach -. 281 auto chair in barber shop for - . 851 crib “gym” for the baby . 509 doughnut eating contest for young riders is ane electric cradle for infant relieves mother 4 396 fairytale gingerbread house reproduced in stone for vee Oe kiddie car for use in water " 285 penny golf links like miniature course for 631 rack for clothes develops neatness 595 seaplane built for, has four-mile speed 781 China—attacks by pirates call for extra guard... 563 Chromium—found in Montana... ‘nts 87 Chuck, Universal—truing work in worn. 346 Church like giant pipe organ -» 928 placed in steel cage for safe repairing. 466 soundproof room for babies om 968 Cigarettes—unique holder ‘“‘shoots”’.. 481 Cistern—keeping dirty rain water out of 313 City—most ancient American . i 955 Clam Shells—solarium admits ultraviolet rays .. 544 lamp—eccentric bench ra Map 870 Cleaning cleaner for condenser pipes removes scale easily 17 flannel bags for dusting ae 146 generator commutator — glass panes of Crystal Palace in London 48 greasy clutches ; , 347 removing grass stains from cl lothing . 499 washing painted walls .. 171 Clock accuracy of crystal clock second in century 93 boat-race starting, fires off cannon... ~..419 huge, built of flowers keeps accurate time. . 914 keeps tah on universe in measuring time 606 large dial fitted to small clock 1036 tfon roars and cock crows from cathedral tower 986 modernistic electric, keeps city’s time 784 old alarm, makes corner timepiece oh 857 paper box on bedpost holds .. 483 talking, speaks time on hour and half hour 209 wound but once a year keeps perfect time 290 Cloth—textiles sorted by use of electric eye 470 Clothes Chute—altering for use as cold air return 849 Clothes Closet improvised * fab 158 ventilating 682 bit sre ‘sane * lothe Cloth = he w Clothe hi tr Clothe Clothi C loud: Coal Com Conc! Cro Cro Cur Cur Cut Cut Cut Cyc Cyc

Page 7

POPULAR MECHANICS INDEX, VOLUME LIV, Clothes Hamper—easy to make Clothesline holders for the basement weight keeps taut Clothespin Bag hangs on line travels on line .. Clothes Rack—for children develops neatness Cl lothing—paste for mending used instead of needle Clouds—some are ten miles thick. . Coal—microbes found in mies 16: -buoy given spring cleaning before Coast Guard trip to sea Coat Hanger _keeps clothes tidy. Coconut—shell makes aquarium grotto Coffee—an electric roaster for use in the home Color best for signboards : 5 : blue favorite color of men women’s is green. fading of, depends on dye flashlight ‘helps to distinguish shades. green hailed as germ killer green most attractive to insects ee Compass—dipping-needle find iron-ore deposits Concrete blocks, low-cast, are weatherproof 191 like “raised bread” enlarges as it hardens... 816 “petrified’’ logs made of. 352 rubber shield protects worker from flying chips 1054 walks of colored, laid in fancy patterns. 465 Concrete Posts cracking of, Copper coloring, brown and black planes find ore Corncob——“‘stone’”’ has many uses.. Cotton cloth as stationery substitute for paper crop, weevil and weather data foretell dishes that will not break made of field duster covers sixty rows at a time Countersink— improvised — Coupling Device—powder serves as, instead of gear shift. Cows—fed yeast. to improve milk ‘for infants Cradle—electric, for infant relieves mother Crane—blacksmith’s for heating tires. Crime anti-riot car shoots water from armored tank. bullet-proof car for police has armored front burglar alarm takes photo and sounds warning camera identifies diamonds to foil gem thieves electric eye on prison wall to stop escapes fifty-pound leg irons hold Venezuelan prisoners 7 gangster car fitted with bullet-proof glass gunfighting police doom gangsters ; how heelprint and bit of ur solved my stery 357 is there a “perfect” crime . 194 microphone in bank vault sounds police alarm 544 radio for every policeman to war on. 976 silent key in adding machine defrauds cus tomers : 102 Crocodiles—over thousand carried by two trains. 193 Crowbar—old driveshaft makes good 696 Currency—pencil eraser will polish a gold piece. .1025 Curtains butterfly pin for holding drying and stretching .. Cutlery—scouring steel Cutter—motor-driven makes letters edges na fs Cutting—irregular shapes of labels etc : Cycle Car—operated by hand carries one passenger Cycloplane—training in, helps student flyers ended by reinforcing 812 with beveled D Dairy—correct water level in — tank prevents souring of milk ; ‘ . 1035 Dam highest arch, restrains six-mile lake 735 stops loss of land - oes 271 Dancing device coaches pupils in tap . 366 taught by radio on portable floor. , 104 Deafness ear shields on spectacles aid hard of hearing 395 hearing electric waves by touching wire.. 78 portable amplifier aids deaf 120 sounds heard through teeth instead ‘of ears 440 1930 Dentistry—matchless lighter for gas jet. Derrick—sheaves, lubricating Desert comes back to life sandstorm detector . Desk Tray—amailing tube makes good Diamonds—mining, by diving. Dictaphone—connected with telephone een news paper reporting . Disease lamp shines inside the body to treat leprosy protection offered by a vitamine pneumonia aid is found in cranberry. bogs skin kills germs of study of, aided by movies * of heartbeats . windows in ears of rabbits show eee of cells Dishes—that will not break made of cotton. Diver—becomes human arrow in leap through hoop Diving banner carried by high diver fails to save his life divers go down deeper with aid of chamber in Davy Jones’ locker. . robot diver to — send ships . ‘ Diving Bell that helps three to aid treasure hunt three hundred fathoms beneath the sea with glass eyes to explore ocean depths Diving, Deep Sea—-diving for $5,000,000 Diving Suit—of inner tubes keeps out water Dogs cage for the motor car fits on trunk rack.. fed on cheaper meats have better health heroes of the white hell onions give anemia stick cures of chasing cars wheels for a crippled enable it to walk Dolls—head is illuminated by tap ping with finger Doorbell—muffler for : Doormat—moving brushes of, cle. an it automatically Doors combination screen and storm.. lock guard that holds key foils thieves open automatically when approached setscrew for knobs can’t work loose Doughnut-Eating Contest—-for young riders Dowel—jig for boring holes true Drafting determining true angle of bends.. dividers hold down tracing cloth when lettering draftsmen use file for crosshatching drawing board surface restored by with “battleship” linoleum homemade drawing instruments keeping track of triangles ledge on the T-square measuring diameter of small rod mounting tracings on muslin rolling ruler _ Draftsmen’s Kinks—preventing ink blotches Drain Trap—fiatiron used to thaw out frozen. . Drawing Table—a cheap and practical Drawings—transparent lacquer used to protect Drill, Hand—using as speed counter Drilling halGened steel a improvised V block for rod and tubing oil well bit assures speed in Drill Press double handle for two-spindle extension chuck Drugs—toad venom may yield to fight heart disease Drying Cabinet—for baby’s clothes.. Dyeing bleaching dark clothes before setting color in fabrics yes fading of colors depends on from castor oil sunken treasure covering E Eagles—stone-block, to decorate memorial bridge bridge at Harrisburg, Pa. ar big wax model of human, in hygiene museum shields on spectacles aid hard of hearing

Page 8

Earth force of gravity on....... reine eae is a speeder ahead of schedule. . jee Earthquake—lItalian, is recorded in ‘America.... 624 Eggs airplane motor vibration is detected by use of 569 machine examines, weighs, counts and dates.. 395 soaked in mineral oils lose less weight..... 637 Electrical Appliances combination dish washer and drier 287 electric wallpaper paster fits roll for hanging 264 iron which permits ironing under buttons.. 287 junior electric stove is easy to Seer 871 miniature dry-steam plant in an electric iron.. 558 neon tubes — run by direct current....... 570 vulcanized light extension free of fire en 449 window washer cleans and dries.... . 289 Electric Cigar Lighter—operates when tipped. ee Electric Conduit—old garden hose can be used as. 1031 Electric Hammer—for fender, irons out dents... 714 Electric Heater—with a fan gives warm or cool air. 986 Electric Iron—for neckties renews old cravats... 792 Electric Lights—blown out with puff........... 753 Electric Meters—installing outdoors... 689 Electric Motor—invented by Thomas Davenport i eee eS 5 Electric Power Lines—lightning lifts signal flag on 778 Electric Rays—fraudulent paintings found with.. 432 Electric Tools electric grinder and sander with flexible om. 89 motor saw and polisher save worker’s time.. 101 Electric Wiring convenience outlet on porch.. 839 laying wiring under canal tests engineer’ s skill 275 quick change from series to parallel... 324 Eiectricity ; device for indicating live power lines...... 520 drawing of generator for artificial lighting ere. 984 heat generated at 900, 000 ‘degrees Fahrenheit . 808 million horsepower carried by land and sea oo ES EY Cer ree oP ; a ee Eyes—glare shield protects vaubivn 710 F Fabrics—rayon, silk’s principal rival, to undersell EN Ske de sake ad ee oe Eee aes 626 Fair—big squash wins blue ribbon at historic eastern 737 Fan—to cool and ‘dry air helps promote health .. 449 POPULAR MECHANICS INDEX, VOLUME LIV, 1930 Farm board walk for the .. fe moving scarecrows are ‘effective. fiw 165 a arid farming is a return to ancient customs... 551 seeding large area with old auto...... ‘ 172 super- aon runs day and night........ ove Se Faucet—easy way to grind in faucet seats... . 328 Fence holding rigid in the marsh...... oe 837 sheet-steel road, is safer for autoists eee 265 Fencing—with toy balloons offers strenuous apart in Germany ... 98 Fertilizer—sprayed through garden ‘hose. .... 470 File, Nail—handy cutter on end of 499 Filter—efficient, easy to make 1025 Finger Nails art-gum eraser removes dirt on 1028 show stages of serious disease... j 531 Fire Alarm—towns use worn-out saws as... -. 629 Fireboat—tiny, used to fight inaccesible blazes 925 Fire Extinguisher boy’s invention saves home when fire threatens 559 tube-form, for zome and auto : Fire Fighting cheap substitute for hand fire grenade 1032 tall water tower to fight fires in skyscrapers. 418 tiny fireboat used to fight inaccessible blazes 925 2 Fire Hose—lifted over wires ends trolley delay 811 Fireplace—building a portable 687 Fire Prevention—short-wave radio current may fire DM GSonees vacuves 426 Fires bark of tree resists ; Saiattor ees 13 black ants fight 767 gale from airplane propellers stops grass fires. 784 Fires, Forest candles in balloons banned because danger of. 576 fire fighting — — save timber 101 fire weather ... Se 633 Fish and Fishing artificial a orm bait comes by yard a ne bag on fishing coat leaves hands free 35 boy subdues two hundred waned fish 737 broiling fish over campfire ee drouth causes fish loss - ; 896 effective fish decoys 157 electric lights over water lure food for fish 263 fish have good hearing 17 fish saved by wet hands 1013 ame fish grown by government help anglers 448 unts and fishes with bow and specially made arrows line control on fishing reel prev ents backlash. 47 machine pumps catch from the water...... 969 rubber waders for anglers worn like trousers 295 salmon swims 1,300 miles... ah tie 545 sanitarium for goldfish 209 seals, increase in herds of, perils fishing trade 191 Shedd aquarium and special Pullman car built to transport fish . 117 spearing swordfish from a swinging “pulpit” 200 streams ridded of garfish by electrocuting them 728 submarine lantern attracts fish 2 327 ten thousand miles sailed for a fish 246 the fishermen’s race . a : 610 umbrella makes folding minnow net 858 Flapjack Cooker—automatic bakes three a minute 179 Flashlight—helps to distinguish shades : 853 Flax—harvesting linens from home-grown 779 Floodlighting beautifies “biggest” building sia . 440 for house lamps brightens entire room. 44 million of candlepower for night baseball. ... 531 Floor Oiler—lightens task for janitors... 874 Floors decorative linoleum strips for border: ... 65 remedies for dusting concrete ‘ : 322 soda protects shop floor from acids ; 879 Flower Basket—made from stones. ; 141 Flowerpots—used to produce music.......... 183 Flowers able to tell time, direction and weather 73 blossoms three ae across found in Sumatra.. 468 huge clock built of » 914 Flowers, Glass—modeling, soon to be a lost art.. 961 Flush Tank—silencer for noisy . 156 Fly—trare, saves natives in South Sea Islands 7 Fly Paper—homemade - 171 Flytrap—electric, destroys insects on contact. 715

Gare Gare Gare Gare

Page 9

64 165 51 172 55 328 337 265 170 199 25 )28 oer ® POPULAR MECHANICS INDEX, VOLUME LIV, Flywheel—for hand emery grinder............-. 172 Fog—queer facts about .........ee-.sseeee ‘oo ee I ; Siren—on lightship operated by ee “'giase- packed meals come ready to serve..... 209 quick freezing promises to lower cost of..... 212 Food Grinder bag on catches crumbs ......... nnd eoree Mae juice tray attached to .............-.+4+- 838 pad for, saves table from damage exits Se Foot ball automatic timer aids kicker ............... 939 auto-tire target develops accuracy........... 89 tackling machine imitates real player........ 720 Footrest—practical for home ..... Se Footstool—upholstered, simple to make . 325 Forest—singing of, is explained by air currents... 993 Forgery glowing ink offers guard against ........... 432 light for examination of check detects. _ 775 Foundry—pattern color indicates material . jixen Bee Fountain—of modern design features playground. 441 Franklin, Benjamin—odometer made by —a ae Freezing—quick promises to lower food ‘costs... 212 Frogs—lights stop croaking of ...............-- 2 Fruit black raspberry grows wild and resists drouth 25 canned, keeps color better in cold storage..... 80 cherry blossoms require sun to produce..... 271 comb for cleaning red currants............. 679 picker made from inner tube... or .° rough weather at sea helps in shipping ‘ 761 Fruit Jar—screw-cap opener removes lid easily.. 981 Fur spring-wire stretchers replace wooden frames 219 Cam DENOTE GUND cesccsissrivscicscivsss EH Furnace automatic humidifier suits any ... 418 gas lighter for makes quick fire... see 9O3 Furnace, Seasken—edluctable é be ae 1036 Furniture footrest practical piece for home..... . 859 of metal offers beauty and comfort . 36 old inner tubes make comfortable chair seats and bunks ... Wiss Se palmetto roots and cement for making mes 65 G Games bridgeboard with card clips for outdoor..... 79 checkerboard playground offers many...... 387 fencing with toy balloons offers strenuous sport 98 tabulator for bridge score like adding machine 4 “tumbler golf” for your parlor ae <6 ew eeee Garage car’s weight opens and shuts doors......... 193 doors opened from car.... whine $< 305 doors, ornamental winodws for ‘ 483 keeping motor warm in cold garage 1027 road map painted on...... pen 851 waste holder for the ‘ a 339 Garden Hose—getting on tight fitting. . mavé, 682 Gardening banana crate protects young shrub co Ge combination weed cutter and support for garden hose ; ‘ ee ten marking rows in garden jodsves to8eSGae Te old pipe distributes seed : 327 push hoe also used as spade. ........... 86 Garden Poles—inexpensive i 704 Gardens I a ian ween ei 510 drawing room arranged from hedge ; 558 making a miniature Japanese ae : 660 radio scarecrow saves ..... 509 seagoing, supply flowers on liners... 223 as add offensive odor to warn of leaks habe 647 balloons supply city’s ’ 759 chemical acts as detective of deadly.... 559 cold, promises to increase power of automobiles 114 electric ‘ ‘nose” detects gas and gives warning 885 fuel, for rural use delivered in tanks... 433 leak in Phone cables shown by inflating with 366 matchless lighter for, is aid to dentists..... 883 natural, viel dyes, perfumes and rubber... 119 treasures from the air Sy ae , 588 Gas Burner giant, heats kiln in sugar refinery Say 720 protectors for, prevent accidents tile cak eae 1930 9 Gas Engine—wooden guard prevents water from ena ties atone bittewke bcaw ae ~— . 1049 Gas ane ratlioactive.............. . oon = of, is delivered by automatic vender... 190 carried’ in ED Bb died sss tewens 569 feed pipes should not vibrate re os sca See made from tar ..... ey 576 microphone in tank catches a thief..... 910 Gasoline any Station—roller skates speed work OE Sis ie SE ee aS ASS 0 ies wees ou : 290 Gate—coil spring eee cleeed. ..sce.e.ssss 509 Gauge—push-in hand ~ ee 337 Gear—repair for rawhide .. 347 Gems—cathode rays tell if previous ‘stones are false or genuine ... , 713 Generator Commutator— —cleaning - ‘ 665 Geology—mountains caused by “puffs” from inside RRS ar ee ae - 188 Germ Killer—brilliant green hailed as . 799 Glaciers—speed told by metal shells buried in ice. 224 } saad Shield—protects the eyes from sun and sky 710 ass blackboards made of .............. ‘ . 768 cementing to metal . so cleaning huge roof of, tests workers’ skill... 48 gangster car fitted with bullet- proof... 108 growth of plants is faster under new Sa 89 “invisible” ceiling of, latest hotel novelty..... 37 is considered a liquid eer : 918 phonograph needle cuts os eae tinted, aids in make-up and saves face. 951 tool for turning fiber and hard rubber made 2. ere - 866 Glass Cutter—wheel on, easily renewed 87 Glass Flowers—modeling, soon to be a lost art.. 961 Glass, Magnifying—smail can be made. 324 Glass, Reading—illuminated, focused automatically 16 Gliders breaking the world’s record. .... 1 converted into plane ... se 894 learning to fly a glider is 184 on ball-bearing post trains student flyers 993 twenty-two pound motor flies é* 812 with sails depends on wind for power . 284 Gloves—extra-thin rubber, help surgeon operate.. 883 Glue—from cow’s milk. ; : 975 Gold—-seventy-five pardent pure arr in eighteen karat 369 Gold Mining—in the Philippines. . is 81 Golf and billiards combined 896 and billiards combined on miniature course. 746 automatic tee operated by pedal.. 1 554 automobile- tire hazard on miniature course.. 989 children’s penny links like miniature course... 6231 club makes novelty inkwell and pen holder 505 electric auto as caddy serves crippled player.. 199 flexible shaft on golf club gives longer drive... 31 highest-speed movie camera helps teach . 615 hog bristles for grass on miniature courses... 575 in your own back yard 6s nine-hole table course.... 982 pool is combined with, on miniature « course.. 999 putting trap replaces hole in parlor game. 897 robot aids amateurs in developing swing 442 scorer on club handle keeps stroke count 912 screen on truck guards driver from balls 445 set for parlor putting combined with ash tray 993 slow movie of golf swing plotted on o- 35 stroke gauge helps player improve game. 998 wire suit of armor shields golf-ball retrieve er 592 Gorillas—hunter tells how to capture “ 646 Grain Spout—clothespin holds sack on 1055 Grass Stains—removing from clothing. . ... 499 Gravity—where do you weigh the most 467 Grease Cup—“alemite”’ fitting on 513 Greenwich, England—-where the earth's surface begins—and ends. . 927 Griddle—automatic flapjack « cooker bakes three a minute oa ; ‘ 179 Grinder simple jig holds tools. +e - . 854 small emery, for home shop 528 Grinder, Hand—reversible 869 Grinding—adjusting speed to secure fonger life of wheels . oe» ee Gun Sight—for birds in flight. . mene 938

Page 10

10 POPULAR MECHANICS INDEX, VOLUME LIV, Guns better plane-gun mounting sought ad Uncle Sam big machine, most deadly weapon ever made. combined rifle and machine gun dozen rounds a second fired by new machine. giant, in triple turrets on British battleship machine, gun fired by air to aid target practice ‘mercy’ bullet brings sleep instead of death rubber band, for boy’s arsenal ... Fa te that drives staples eliminates hammer Guns, Naval—biggest, have twelve mile range. Guns, Ordnance—mortar railway gun to aid in de- fending coast Gymnasium : ; ’ children’s gymnastic school in Berlin fitted with mirrors on railroad car H Hair—women’'s neither silkier nor softer than men’s Hammer attachment for, starts nails out of reach claw on handle found useful ‘ made of pipe holds supply of tacks. nail held by claw for initial blow. reverse sandpaper holds head on Hangers—self-alining shaft Harrow—homemade, loosens soil Harvester cuts corn, shell, cleans and bins it.. sugar cane, cuts forty tons an hour Hat Holders—easily made Hats—bleach straw, outdoors at English factory Head Net—has window for clear vision Health latest type of artificial breathing machine oxygen breathing room aids pnevmonia victims vitamins, allies of .. Heat—generated at 900,000 degrees Fahrenheit Heater—improvised water. i Heating and Ventilating altering clothes chute for use as cold air re turn eas fixture combined in one unit flame balanced on air jet in firebox of boiler. heat generated by motors used to warm build ings any Highways brick road on a metal base... elevated for autos speeds traffic Hoe—for garden work also used as spade , Hog Bristles—for grass on miniature golf courses Hog House—straw loft for : Hogs—hog oiler for the farm. Hoisting convenient to single worker expert tells how to sling loads for safety 761 856 874 1037 35 685 147 161 173 Holland—bed of Zuyder Zee revealed as pumps a. clear water .. Hollywood Bowl—thousands can hear pin. drop i in -Home—horseshoes form attractive door neue on summer oi hee os pale a Horses airplanes rout wild “walking”’ on rockers gets power from rider. Horeshoes fifteen tons of, collected by blacksmith... form attractive hinges for door on summer cottage Hospital—oxygen- ‘breathing room aids pneumonia victims Hotel—carried over desert on "back of camels’ House—fairytale enaernenes house reproduced in stone .. Household Devices 110, 286, 462, 638, 814, babies’ bibs made of paper save laundry bills bag produces heat as substitute for hot water bottle basket with s ecial holders helps orn dishes from breaking blanket case with fastener at side... bread box has convenient cutting board broiler compartment for stove has window clothes hamper has smooth surfaces and folds up ; es coffee pot calls you when it boils 1930 Household Devices—Continued combination electric dish washer and drier 287 combined stool and clothes drier 110 costumer holding men’s suit, tie, shoes, shirt, easily moved about.... 11) dustpan that has comb for cleaning the broom 286 electric cooker and corn popper wi 638 electric iron which permits ironing under but- tons ; , site 287 electric lamp base has grill an 638 electric-light stove .. 991 electric sprayer operated by vacuum cleaner. 111 fork with two-prongs remove seeds from grape fruit is 639 form for pressing neckties 815 furniture, novel method of packing upholstered 286 grid of aluminum for skillet 814 hat brush and holder in one 991 heater, portable, warms and circulates air by electricity 815 holder and handle for using steel-wool pad 814 holder for covers o: glass dishes a 110 holder for nursing bottle we 287 hosiery protectors easily put on, can be car ried in handbag os 110 interlocking fastener strip eliminates hooks and buttons a 286 iron holder prevents fires 110 jumper for child operates like te eter-totter 814 kitchen cabinet has dining table ay 990) knife holder protects blades 111 mop, convenient squeegee, for cleaning and polishing floor .. - ‘ 463 opener safely removes tops from screw cap jars, bottles, etc. .. 639 paper to polish furniture 463 pillow tops adjusted with interloc king fasteners 991 polisher of chamois cloths ‘ 991 pots and pans, clamp for lifting from stoves 990 rubber mat for sink 991 safety can opener operates by turning crank 286 screw-cap fruit jar opener 981 shoe-trees fastened together to keep shoes from becoming lost 462 silverware wrapper chemically treated to pre vent tarnish 639 skillet has grooves in bottom and acts as grill 463 slip covers for shoes, rubbers and slippers ... 287 smoking stand on wheels .. 287 steamer with four compartments keeps foods hot after cooking ee 639 strainer clamps on kettle handle i ‘ 815 table, end, bridge or luncheon combined 462 toaster that eliminates burned bread and de posits slice on dish - - 463 tomato slicer 286 vacuum cleaner created by water system 639 wall mop to remove dust, smoke and stains — 638 water heater is operated with fuel alcohol 990 wickless vapor-burning oil stove a's 111 wire holder for boiling eggs 990 House Moving—over river on temporary bridge... 33 House Numbers lantern illuminates : , js reflectors used for ai + ane Humidifier—automatic, suits any furnace. . 418 Hurricanes—‘‘doldrums” of air cause disastrous.. 762 Hydrants—lantern in barrel prevents freezing |... 1037 Hydrogenation—crude oil changed to equal amount of gasoline Hydroplane “Popular Flyer” a racing. ... 484 I Ice canvas bag aids delivery of 171 chemical substitute for serves to cool drinks. . 968 dry, clouds sprayed with, made to yield rain 418 frozen in small blocks is broken with fingers 542 “thot” made by high pressure edit 429 paint black to open lake .. 281 wd seeds sprout on ice 433 Ice Pick—hose holder offsets danger of carrying 1042 Illumination—neon chandelier gives almost white light 946 Infants—name tanned on new babies for identi fication .. a 640 Ink—glowing, offers guard against forgeries 432 Inkwell—old golf club makes novelty 505 Inlay Banding—making band-inlay strips. 1039 In In an ad ee cr

Page 11

110 287 110 286 110 814 990 111 463 639 463 991 991 990 991 286 981 462 639 463 968 1042 946 640 432 505 1039 POPULAR MECHANICS INDEX, VOLUME LIV, 1930 11 Insecticide—for plants . ‘ idw Vid ee 147 Lawn Insects homemade harrow loosens soil . 173 at war with harmful pests 554 ready-made in rolls laid like carpet. 113 butterflies and moths bred on English farm.... 821 Lawn Edger—like a scooter is easy to operate 36 colored lights used in war against. 982 Lawn Fertilizer—sprayed through ‘garden hose 470 cricket is master musician, talking film reveals 460 Lawn Mower electric flytrap destroys on contact ; 715 display for store window oo is ah fair for collectors from all over world ‘ 560 roller springs give smoother cut 461 green color most attractive to. 812 Lawn Roller—winter use for « aia 3 head net fitted with window to eet pro Lawn Sprinkler—on roof keeps building cool oo» O32 tection against ......... 642 Leather—making lacing ; 858 help save nut crop . 806 Leaves—in lye-solution both become like gauze.. 616 ‘Hopperdoser”’ used to exterminate grasshop Leprosy—protection offered by a vitamine diet. . 746 pers ‘ 29 Letter houses ridded of white ants by catching ‘their is dictated to coin-in-slot machine 944 queen 274 is its own envelope vat ag 98 larvae able to think experiments indicate. 368 _. using paper clips in “ 1029 now you can buy = ie .. 640 if ridding camp of flies ss 837 delay of old age seen in control of liquids 728 rocker inclosed in screen protects from. 799 secret of, sought in mystery ray én 564 smoke screen routs, which endanger flyers 737 Lifeboat—for seaplane has sail and motor a solution for washing sills keep out ... 491 Life Saving sun’s rays are used to kill bark beetles .. 967 knapsack holds user’s valuables , 568 Insulation life guards use seaplane in rescue work at battery compound as ine vate 172 : Seaside, Ore. .. bats omens 219 shellac for wire .. 659 Light Insurance—plan for aviators aids clubs. 806 “Aladdin’s Lamp” halts train with beam of 7 Insurance, Accident——policies dispensed by slot ma- artificial sunshine speeds up night workers.. 559 chines in Germany a “o 570 color cabinet plays lights from moving roll 43 Inventions invisible rays made visible shining on minerals 469 combination phonograph, radio receiver and lamp reflector supplies artificial daylight 761 clock 464 rays from auto lamp time racing cars. . 375 prophets and their prophecies o% ee 970 speed of, checked through one-mile tube... 385 this inventing world eo. aoe stops frogs’ croaking 25 world’s greatest hoax recalled by models 986 store light controlled from outside 1029 Inventors—millions for plant ie 763 the magic of colored : x Iodine weight of, from sun is many tons ...... 458 disinfecting water with ..... 681 Lighthouse— illuminated to save lives of birds 713 found in coal by German scientists 626 Lighting Iron, Cast—lace design from 769 lamps of the modern Aladdin 596 Irrigation arid farming is a return to ancient cus magic “eye” for opera. ... 943 toms 551 school in skyscraper aids home makers...... 88 Irrigation, Citrus lamp wick solves problem of 736 Lightning lifts signal flag on transmission line 778 J picture of flash taken from airplane 992 ae mestery tests pane lines 563 iu-Jitsu—-secrets of 360 . ,Zeppelins dety 7 75 {indi converted into fortune by by. products com- Lightning, Artificial—tests on high-tension line pany ATS are 792 insulators .» 984 , Lindbergh—picks a plane 803 K Linen arvesting home-grown flax for.. se vee Linoleum Kerosene : proves useful to cabinetmakers a 880 lubricant for reamers <tus Gee strips for floors borders 65 will prevent explosion ‘ “ §23 Loading and Unloading Keys : balanced skid for platform 1054 automatic chain reel —_- switchman .. 450 belt and chute convey load from warehouse to preventing loss of hotel..... 161 ship , 753 Kitchen Table pit substituted for platform.. §25 folds into wall , 681 Locks—removable cores for, operated by master key 568 “roll-away” cover for ees Locomotives : Kites—airplane kite releases parachutes 132 child’s toy made from oil drum 506 Knife—electric, hot blade helps clean game . 385 four men pull on roller bearings 554 is monster, a “he” or a “she” a 96 L per is monument to early railroaders os OZ roller-bearing, has living quarters 377 Lacquer — F a Logging me surplus war munition turned into oo MOO heres ol : : : a ; . : . = . plane with broadax bit squares logs 697 transparent, used to protect drawings a) ae looking to science to end ; Ladder—extension leg for.. : ‘ 339 g science to end waste in 66 Lake—paint ice black to open lake 281 Logs : Lamps hauling attachment for the farm wagon 1050 a : . “mining for shingles. . of 367 automatic for bedside lights when tipped .. 813 setrified”’ de of . +44 bracket reading, holds book and ash tray 189 % k = — 2 os Sameneee o94 washer cleans, on way to saws 68 electric photo flash, ends smoke and noise . 542 . , Loud Speaker for the bridge table a 1032 air valve imoro t , ae of the modern Aladdin - ' - 596 on 1 i arn? S84 ' , : ipper deck of city motor coach 99 of three colors guards rail workers 254 on wheels helps draw c ™ | one reflector supplies artificial daylight. . 761 semengg? —ps Graw Crowes to theater 708 star, adds beauty to home a 342 i are uces chimes without bells 919 Language—telephone vocabularies used by the opener ll smell of, warns of overheating 739 world ° °° 533 bearing, self lubricatin ses chemicals f gn? ee illuminates house numbers. . 863 of deste Tesco gy _ beneag eae ve oil 381 brake for the . ed 874 crowning large pulleys in a small 346 M double-purpose cutting pan for oo 696 Machines feeding iron work to drill in .. ; 681 brushing chips and dirt from $27 lubricant for, center ae 873 cleaning greasy clutches ; 347 measuring segments in the oi Sen crowning large pullevs in a small lathe 346 turning cams on ae de 171 examine before starting : R75

Page 12

12 POPULAR MECHANICS INDEX, VOLUME Machines—Continued motor cutter makes letters with beveled cinpeat never stop by grasping belt A repair for rawhide gear... on silent key in adding machine defrauds cus- tomers g that sells stamp also weighs Re. winadlee ae truing work in vorn chuck... putt twin-screw electric conveyor moves bulky ar- ticles quickly ‘ as Machine Shop frame for individual motor drive straddles ma- chine metal powder serves as coupling instead of gear shift Magic—topsy-turvy match is ‘clever bit of magic Magnetism—mystery of, laid to electron’s spin Magnifying Glass -illuminated, aids in reading.. Mail— — post office speeds up work Mail, iota’ monthly pay over five hundred dollars t. S. leads the world.... : Mailbags—give theft alarm if stolen in transit Mail Box , automatic rural, saves time of mail man rural, covered ‘with stones... Manicure—electric outfit saves time of user. Manicure File—handy cutter on end of Maps monster relief, curved to a of world..... reversible rack for ...... a a road, painted on garage road, prolonging life of .. world in miniature shown in "building satpin Matches—brick makes handy holder....... Measuring how Orville Wright used rake for altimeter micrometer collar enables correct setting of dividers ‘ ; screw threads water with air Measuring Instrument—for taking temperature of — stars and planets .. Meats—hand tester tells if tough or tender Metals alloys light as aluminum and as hard as steel beryllium to solve plane corrosion : cementing glass to cheapest of chromium found in Montana coloring copper brown and black electric eye sorts by light reflections obtaining a smooth finish on soft metals “oxidizing” copper and brass..... printing plate made — by metal spray rocess ee tin, how to find tinning black iron uranium made by electricity measures invisible S678 3s Meteorology— queer things that fall from the sky Meteors—explode as they hit earth Micrometer—collar enables correct setting of di- viders : Microscope— fine adjustment for a "cheap Milk—electric energy in milk fat governs cream content : j Milking Machine radio waves start. Milling—an accurate keyway Minerals modern woman’s beauty aids maemo? by mines protactinium is radioactive Mines and Mining dipping needle compass find iron-ore deposits vacuum cleaner gets rid of rock dust in Eng- land . paauss see Mirrors : ' / at street corners aid auto drivers in Brussels children’s gymnastic school wit made of polished wood rear-view, in goggles for traffic officers. tinfoil substituted for small... ‘ transforming an old Mittens—for hunters leaves gun fingers free. Models big engineering problems solved with... compressed air is power for eight-foot plane electric plane flies and lands itself. five-foot cathedral of cement and sand.. in Berlin fitted 9 245 865 347 400 1033 375 847 806 802 7 987 wns NuNO NNN NNR uUrko oN own Wbo wo 3 978 349 800 96 289 42 LIV, 1930 Models—Continued hand-carved, takes two years to finish . 602 hen tells and shows how and what she does... 366 of German battleship features boat show... 461 pontoon-hydroplane promises higher speed... 575 radial engine for model airplanes........... 498 stabilizer control for model stunt planes..... 505 train track stand folds when not in use...... 848 wax of insects in nature study.. fieiecain 113 why not turn that model-yacht hull?. 138 working model locomotive fits in palm of hand 106 Monograms—preventing corrosion in deep engrav- SR: Fic at erie dc iw Mew earc'a 1027 Monument—memorial to the W eee Brothers.. 99 Mothproofing—your trunk ..... ‘ ince, Oe Motor automatic switch for water pump...........174 carried on back runs tools .. . 242 frame for individual drive straddles machine.. 515 plane motor more efficient than automobile en- ee 975 tiny cycle runs many ‘miles to the gallon. . 560 Motor, Outboard propels two cances evel .. 334 rubber handle for starter en sa 584 transporting the . ‘ 142 using two on speedboat are re , 676 Motor Bus cleaning exhaust heater pipes - i<xx oe diesel engine for, effects big fuel saving .. 784 giant inter-city carries fifty-three passengers.. 626 Motorcycle service station on wheels saee O62 tiny, runs many miles to the gallon. ‘ - 560 Motor Shaft—singing piano wire records twist 808 Mounds—the mystery of the .. 716 Mountain Climbing—to conquer Kanchanjanga... 430 Mountains—caused by “puffs” from inside earth?. 188 Moving Picture Camera—trace timed by, focused 0 OF =e au see 2 541 Moving Pictures battleship built for, rests on scow 811 block-letter movie titles produce novel effects.. 265 camera weighs but thirty-seven pounds. . 377 cricket is master musician talking film reveals 460 films of sound wear out after fifty to seventy five days of showing sce Sham Soi. ae fly plane about waterspout to make 466 highest-speed camera helps teach golf 615 made of yourself while you wait -. 274 microphone picks out sound at which it is pointed . 976 movie-film cleaner fits on the projector ‘a 609 talking film shown on train to entertain pas- sengers . 400 the making of a sound fable beds a the world’s queerest jobs _. 434 to show easiest way of doing things 553 tofie improver for radio set aids talking movies 33 Museum big wax model of human ear in hygiene oe peace ship’ s steering wheel is on exhibit 570 shark’s jaws reconstructed from fossilized teeth in marine pee ; 115 Music animals depict music notes to teach children 281 flowerpots used to produce ~ 183 made by electricity , 994 thunder converted to, Musical Instruments breaking in stringed instruments. . silent violin for beginners has no board violin inside walking stick makes musical cane violin made of match stick work of high school in radio experiments 608 Renaud it <d ons = On ome ee ain 595 Muskox—herds for Alaska 609 N Nails floor, driving down projecting er. 700 hammer attachment starts 856 that seals hole makes roofing last longer 395 Nature—wonders of seen through camera lens 34 Navigation—how echoes tell depth of water under ship ‘ : 45 Navy, Australian- _gun ‘turret used as “spare” 919 Navy, biggest guns have twelve mile range —s

Nec Nee Neo Nev Nic! Nou Nut Oce Od Oil Pa Pa P;

Page 13

608 038 575 112 595 609 Navy, U. S.—Continued POPULAR MECHANICS INDEX, VOLUME LIV, destroyers may be barges..........-+-+-+++-- 33 fastest cruiser carries airplane fleet...... 189 junk pile receives thirteen submarines. 16 junking old warships. ea NE a a | 627 latest treaty cruiser ““Northampton’’.... 604 portable mast for dirigibles decreases ground é GE Gahan Ghd veep Wabeet hte bbs 451 sixty navy planes “battle” with mother ship.. 545 Neckties—electric iron for .............. 792 Needle—threader, saves time of busy housewife. 576 Neon—chandelier gives almost white light 946 Neon Tubes—now run by direct current 570 Newspapers in baler for old, simplifies tying . acai iat 257 sent to sea by radio , . 740 Nickel Ware—restoring finish on 850 Noise Maker—a safe, for Independence Day 155 Nutcracker - electric, saves oil-bearing kernels......... 888 grotesque figures crack nuts.... ; 1017 Nuts (Mechanical) leak-proof, aids storage of fluids 989 locked fast to bolt by removable pin. 77 O Ocean , craft to travel bottom of, utilizes rubber shields 220 power from, new effort to obtain 448 unseen fence across Pacific is barrier to sea life 601 Oceanography— islands rise from the sea and disap- pear overnight .. 441 Odometer—made by Franklin to measure post roads 777 Oil crude, changed to equal amount of gasoline 4 crude, seen as auto fuel with Diesel engine.. 200 made from cherry pits..... 721 sump atomizes to raise it from well. 737 Oil Conair pump pistol on, shoots ten foot stream 22 Oil Drum—mounting for garage... 104 Oil Fields—failing, revived by action of water 981 Oil Wells—taming ‘‘Wild Mary” 80 Optical Ilusions—when seeing is “deceiving 915 Orange Grove—lamp wick solves problem of irri CNY a ada akawo> 736 Orchestra—five hundred mouth organs used by.. 709 Organ dense forest of pipes shown in unique photo.. 5 giant pipes, for study of sound. 77 Overcoats—test warmth of, on refrigerating ¢ coils 419 Owls—fight ranchers’ enemy ......... 592 Oxidizing—copper and brass .......... 506 Oysrre-goed all year under freezing method 793 P Paintbrushes battery box for storing.. 665 good, required to produce smooth undercoat for enamel my SR et 152 removing shellac from we 686 Paints and Paintin air brush that - not clog works under pres errr 641 aluminum paint resists ‘heat and keeps its color 385 atomizer for spray painting 326 brown stain for mahogany. 337 deep-red stain for wood 1015 fireproof .. 699 fraudulent painting s found with electric rays 432 multi-color airbrush paints three shades at once 257 oil-color tinting of photos requires no brushes 192 aint thinned with water ae 46 oman crystallotype 684 staining and varnishing 862 use old brushes for painting concrete 351 when applying shellac to ee 505 Paint Shop—auto trucks for small. 698 Paper cotton cloth as stationery substitute for 765 from seaweeds ' 999 Paper Bag—waterproofing 873 Parachute attached to vest eliminates oe. 386 for short jumps opens in few feet. 470 lands airplane when engine fails 752 safety of modern, proved in many tests. 459 Parchment—tools a thousand years old still make 807 Passion Play—front and part of ae of theater at Oberammergau - ; 398 1930 13 Paste—-for mending clothes used instead of needle 98 Pastry—guard for pie display on counter .1015 Patents papers bear facsimile signature of commis- sioner of patents , 181 Russian patent office to aid foreign inventors 289 Pattern Making-—grease cup used as former for making wax pattern fillets ... nate 7 174 Patterns color indicates material for foundry 514 vent your dies to get sharp impressions 1050 Pavements—of rubber bricks stand heavy wear 905 Peaches—‘‘phony” disease of, to be studied 429 Pearls—divers after, trained from early childhood 284 Pencil Leads—durability of, tested on turntable 44 Pencils clip on serves as letter opener. weeny magnetic iron writes on steel . 905 Pen Light—finger grip holds 1031 Perfume—smells are put to work .. 632 Perspiration—of feet, to remedy excessive 849 Pests barkbeetles slain by acid forced into trees 365 foiling the cutworms : ; 141 garden, killed by electricity 568 insect police force at war with harmful 554 lady beetles raised to war on citrus.... 15 odors that lure corn borer to aid in war on 458 Petroleum—"“black gold” ry 401 Phonograph needle cuts glass.. 515 picture card has, record 451 record, long-distance radio bottled on 433 Photo-Electric Cell burglar alarm sounds warning and takes photo 799 door opens automatically when approached 387 electric eye goes to work in office and factory 290 electric fye on prison wall to stop escapes 47 magic “eye” for opera aids lighting effect 943 sorts metals by light reflections ey 988 textiles sorted by use of ‘ 470 Photographs mounting in watch covers 848 oil-color tinting of, requires no brushes. 192 Photography butterfly wings photograph selves he 553 cameras aimed ike guns for air : 396 copying newspaper halftones 509 electric fan prevents photos from sticking to ferrotype plates - 1013 electric photo flash lamp ends smoke and noise 542 exposure meter assures better photographs. 102 finishing glossy photographs 8 4 > hide-and-seek tent is used to photograph birds 2 how trick photos are made for advertisements 82 nature wonders seen through camera Jens 3 photo murals newest wall decoration photographic reflector easy to make 1043 photographing close-ups with Graflex camera 1017 raising eveloping solution in tank. e:-- 847 self- oo of mink shows photographer’ s skill 441 single switch controls both lights in darkroom. 1027 ’ nast stretching photos cut too short 1048 trick photograph made with mirror 1038 Photography, -pamealeniend pene tens aid en- gineers 947 Piano portable player for, fits in small case 399 “silent”, is audible only to the player 928 Pigeons carrier, on airplane for aid in emergency 593 trained by German army officers to carry automatic camera - wait .. 80 Pigs—protecting sucking 336 Pile Driver—works as piston of gasoline engine.. 451 Pipe Lines protected with expansion joint 985 radio aids in laying : 199 Pipe Threading—bench for.......... 873 Pipes cleaner for condenser pipes removes scale easily 17 distributes seed 327 vise made from cable clamp for... 520 wooden cores strengthen nipples 690 Pipes, Water—simple device for thawing electri- cally 105 Pirates—attacks by Chinese, call for extra guard. 56 Pit—substituted for loading platform 52 Plane—never set flat on bench so blade touches surface gies ; er 87 Vn oa =)

Page 14

14 Plants able to pick colors in light rays blossoms three feet across found in Sumatra corn, moisture in ce disease of, cost billions a year growth of, is faster under new glass millions for inventors .. ; poison ivy easy to cure spraying under the leaves sprout from plaster on building walls that bite bugs treated with radium to create new window shelf for potted Plaster-of-Paris—how to prevent fri m setting ‘quick types y . Plastering—done by ‘air cuts down hard work Plating—effective, tricks easy to do Playground checkerboard, offers many games fountain of modern design features. on hotel roof has fish pond — to build a ‘“‘wabble go “round” Poison easy to cure ... relieved by new drug Police, Polish—coats and shields of metal protect Police Training—they get their man Polishing—restoring finish on nickel ware Popcorn—making pop Pale Porcelain—cast, aids dentists and repair Porch delivery box for screened electric convenience outlet for Postage Stamps—machine that sells weighs letters Postal Service speeded | up ’ by Germany Potato Bin Potato Peeler work stamps also turbine service in an improvised like grater removes skins easily Pottery—simple potter’s wheel makes artistic jars Poultry automatic feeder operated by clock electric knife’s hot blade helps clean game model hen tells and shows how and what she does ba movable gas brooder coaxes baby chicks to roosts old auto hood makes good brooder ranch for city lot , wet-mash mixer for raising of why chicken jerks its head revealed by science Power—of future from soil, air and sun.. Power Hammer—converting a tripod drill into Power Line leaks detected by airplane patrol portable lighting factory tests Power Plant floating power from the sea Printing copying newspaper halftones engraving plates of rubber .. matrix with white lettering is more easily read plate made quicker by metal spray process Prisons—employ leg irons in Venezuela Prophecies—prophets and their prophecies Psychology superstition and the witch doctor in why people are superstitious Pulleys—convenient to single worker. Pumps air-pump pistol on oilcan shoots ten-foot stream atomizes oil to raise it from well cheap power for centrifugal portable that floats run by electricity Punching Bag—how to make a “whirlo” Punch Press—adijustable table for the Africa Pyramids—mystery veils old, found in Mexico _ Rabbits—effective trap for Rack—map, reversible turned without detaching. . Radiators heat chamber in, keeps dishes warm steel shields for keep the walls clean Radio approximately forty-three in U. S. own sets clock control tunes stations in percent of families advance POPULAR MECHANICS INDEX, VOLUME LIV, 1930 Radio—Continued 104 diver converses with flyer from ocean floor.. 805 468 echoes mystery perplexes scientists...... 449 751 for every policeman to war on crime es 976 586 hepful hints from the radio laboratory ae re 124, 300, 476, 652, 828 1004 763 sailing the skies with radio on air liners 356 294 short-wave radio current may fire den gun... 426 997 tinfoil fuse protects meter ..... a s See 461 wall log for DX fans r 122 44 Radioactivity—old metal roof possesses 811 221 Radio, Aerials 499 antenna kinks for DX fans.. vee re 830 bringing in the antenna lead sa 296 174 light-socket antenna kink "1010 635 Radio, Apparatus—a.c. DX tuner highly selective 648 516 Radio, Applications block system for enters run by radio tele- 387 SE eds ke ; 429 441 dancing taught by, on ‘portable floor ; 104 85 headset for the deaf attaches to temples 109 657 how heavens may be explored by radio beams 988 locating metals ‘ : i a 651 294 loud speaker as scarecrow .. 821 940 microphone in bank vault sounds police alarm 544 905 movies on steel tape +9 280 929 newspapers sent to sea by radio ‘ 740 850 portable amplifier aids deaf eeteds 120 13 radio aids in laying pipe line 199 574 radio from plane goes half around the world. 558 radio locates water pipes without digging 210 675 radio scarecrow saves garden... a oe 839 radio waves start milking machine in test.. 978 Reed visual indicator aids airplanes in flight. . 529 01 tone improver for radio set aids talking movies 33 ultra-short radio waves guide ships in fog 241 806 ultra-short rays in radio act like light es. ee 1034 you_can build this light-sensitive relay 1000 531 Radio, Batteries ; 507 extending the life of B-batteries .. 302 how to alter a.c. eliminators for d.c. operation. 1006 280 Radio, Broadcasting 385 heartbeats wa “$e 123 ; juggling the short waves 809 366 microphone swung on shoulders aids ‘sport 466 voice from sky carried by horns .... 632 72 where noisemaking is an art 38 13 Radio, Construction 701 from 15 to 195 meters without plug-in coils . 472 866 improving selectivity of all-wave sets. 128 42 low cost is feature of simple radiophone . 478 631 switchless test panel ; ~~ 831 1043 Radio, Installation ‘ concealed for auto easily installed 295 988 connecting power supply to receiver on. wee 563 giving the old set a new voice.. ; 126 7 Radio, Loud Speaker 959 blending the tone of 123 881 boosting the volume of magnetic speakers 303 curing dynamic speakers of rattle. 296 59 eliminating rattle in dynamic speakers 475 R95 for car driver gives verbal warnings. . 73 646 huge, projects sound with clarity 728 207 on wheels, heard for four miles an 802 761 radio heard twenty miles with giant speaker 642 970 report air-race results Si . on aee sponge remedies “squawk”’ in 1003 720 talking back to the.. 297 250 Radio, Receivers 523 auto radio on running board easily repaired 384 bus is equipped with, to entertain passengers 208 22 from 15 to 195 meters without plug-in coils.. 654 737 kit makes automobile receiver o- 299 165 low cost feature of four-tube DX 824 os short-wave receiver in unit form 1006 835 Radio, Reception 524 bigger voice for radio .. wit 291 465 humless, electric radio tube improves 274 its easy to locate man-made static sources 1008 long distance radio bottled on ) shanqgengm rec ord ‘ 433 power-line antenna effects is 122 153 reducing interference by rotary converter 834 777 simple device for improving selectivity 1007 thunder converted to music in radio experi 271 ments 608 968 trouble hunter in car ends interference oh 247 world’s most elaborate radio set ‘ 822 Radio, Repairing pid broken sockets in power packs bw 299 checking service voltmeters asa — os: — — Radi Rad Radi Rad Rail Rail Rai Rat Ray Ra: Rel Re Re!

Page 15

199 558 210 509 978 529 33 241 911 1000 302 1006 123 809 466 632 Awe NUS St \to™) NIN Dw > NS “NI 1002 297 Radio, Repairing—Continued "ade tor the service man ; Peinin “e Radio, Television ; clear as movie sent by new transmitter first television show .. ° method of suppressing interference caused by flashing signs photo-electric cell of rugged construction shielding of neon-tube leads improves pick-up Radio, Transformers—high line voltages reduced for standard a.c. sets , awa Radio, Tubes defective rectifying, cause distortion and weak signals eo laboratory voltmeter engmage tube ee 2 marking location of ‘3 power tubes operate in series from five-volt tap 4 protecting tubes that are lighted by 32-volt supply : . oe six-foot, cooled by five tons of water....... with metal coat has grid on outside . Radium an ounce of, in eight years.. in your backyard luminous quality of, produced by impurities Railplanes—suspended rail cars driven by air pro- 5 pellers es vor oe i Railroads __ A ! air purifier for cars makes own weather.... a ‘Aladdin's — halts train with beam of light ——- és baggage car carries ; autos, horses or scenery box-car floors are being constructed of concrete i. car lunch counter for hungry passengers K dicodt engine for, serves mountain line. doctor’s office on wheels aids employes - flying redcap takes baggage on aerial railway 2 four men pull locomotive on roller bearings ; gymnasium on car .. tes ' handcar with sail hauls entire village ; has “navy” of many boats how railroad tracks are laid in England locomotive, old, is monument to early rail- ; roaders j pneumatic shock absorbers ; A razing rail depot tests skill of engineers eo robot, carries rock to cement mill oe é roller- bearing locomotive has living quarters 3 “Sherlock Holmes” builds miniature ‘ steam engine, high-pressure halves fuel cost. suspend rail cars driven by air propellers talking film shown on train to entertain pas- sengers % terminal, hand carved. model ‘takes two. years to finish . test steel ties on English the world’s first two-way train.. Rain—clouds sprayed with dry ice made to yield tf Rat Traps—hbaiting 3 Rayon—silk’s principal rival to undersell cotton. Razor blades serve as springs for scale how to strop safety blade at angle... safety, roller sharpener fits all blades re safety, vest pocket, is carried in own handle Refreshment Stand—hot dog cart like engine at tracts customers eee Refrigeration canned fruit keeps color better in cold storage = canned snow from tropics sent north for freez- 4 ing } Refrigerator , charcoal deodorizes , com : electric, wire on cut out switch indicates its pr position ‘as ] v4 Respirator—latest type of artificial-breathing ma | chine ie \ Restaurant 4 built on column revolves with diners. . ship’s prow for, helps draw trade Rest Room—railroad car set on stilts in Alps Revolver—rubber grip for butt of B. Rivers—low-water mark set by drouth. t Rivets—setscrews with cupped ends make good sets for see Road Grader—old tires aid.. , Road Marker—saves money on traffic stripes Roads brick road on a metal base F of steel resist wear in England

POPULAR MECHANICS INDEX, VOLUME LIV, 304 298 128 296 . 1007 792 563 567 813 791 641 -1052 75 8 905 708 152 617 869 522 118 885 7 1930 Rockets—tests aided by grant from Guggenheim ‘und .. é« : Roof metal, old, possesses radioactivity. . thatched, for the cottage tin, soldering flux for Roofing—nail that seals hole makes last longer.. Rotoscope—eye turned into slow movie by Rubber crystals to reveal chemical composition drilling holes in ar engraving plates of extra thin gloves help surgeon operate , Rubber Plating—of concrete, wood and metals. . Rubber Stamp—making impression appear like em NE a s.a ad 6.55 Rubber, Synthetic—made with ‘potato starch and chemicals ..... Ruler—rolling, saves eyes and time S Sacks—twin screws replace belts in moving Safety Devices and Measures airplane safety-belt latch automatic key-chain reel protects switchman bumper for auto saves lives of pedestrians. carrying a danger signal on highways chemical acts as detective of deadly gases church placed in steel cage for safe repairing down safety lane ...... flexible signposts prevent automobile accidents lamp of three colors guards rail workers safety valve for gas stove prevents accidents _ sheet-steel road fence is safer for autoists steel net guards motorists from rocks in blast- ing .. << oF ; warning sign also gives road directions water skis for policeman aid in saving time Salmon—canned, contains substance which vents pellagra peers Salvaging raising the “Hindenburg” robot diver to help salvage ships .. ; Sand—chaining a mountain of.. Sander buffing head makes vertical _.. electric belt, cuts without ripples old auto parts make good disk Sander, Belt—reduces labor ae Sandpapering—square edges on small machine bases Sandstorm—desert, detector Sawmill—mechanics washer cleans logs on way to saws hated ve : Saws and Sawing bandsawing inside diameter of blower for the small jigsaw carpenter's trestle aids in repairing extra handle increase comfort in set ne filing stand for home workshop hand and bench saw are combined saw with graduated teeth stays on cutting towns use worn-out saws as fire alarms Scaffold—supports from angle iron Scales air current’s force weighed as aid to flyers improvised, gives accurate weight. old razor blades serve as springs for Scarecrow—loud speaker as... pre sunken treasure rings using a line Schenectady—the wizards of : School—light, in skyscraper aids home makers Science energy of workers is measured hy treadmill glaciers’ speed told by metal shells ice .. moisture in corn plant new source of power seen as next great dis covery rocket tests aided by Fund weight of light from Scooter—like roller skate Scraper—hardening edges Screen—adjustable, fits any size door or window Screen Door combination storm and curtain rods for guard.. buried in grant from Guggenheim sun is many tons has rubber tires.... 811 141 689 395 359 720 869 895 883 602 836 729 978 635 nn 75 4% 3 0 992 1026 559 466 979 944 99 159 910 1052 876 851 92!

Page 16

16 POPULAR MECHANICS INDEX, VOLUME LIV, 1930

Screen, Wire—getting tight.................-... Screwdriver—attachment makes drill chuck of ESTE ET ETO re ie 64 Screws : are held in glass by fiber plug. . ; P 248 kept tight in wood by threaded holder.. 113 pipe nipple aids in starting wood .. 339 starting small je enews sp eee ‘a 1015 Sculpture—in the making from clay to bronze » on Sea bed of Zuyder Zee revealed as pumps clear ~ water Rea taki tate oi lai 4 apes ee three hundred faihoms beneath the weer Sea, Dead—wealth from the.......... 794 Searchlight ; airplane, halt trains in emergencies 801 giant lens for, to go in lighthouse... aos Oa Seats—reversible, turn movie into lecture hall 24 Seaweed—paper from ............ ahs 999 Seeds—pine, sprout on ice ee oe e a 433 Shark—jaws reconstructed from fossilized teeth 115 Sheet-Metal Machines—revolving table for 1055 Shellac for insulating wire ee 659 removing from brushes........ 686 Shingles—‘‘mining’”’ logs for - 10sec, Shipbuilding—why not turn that model-yacht hull. 138 Ship Models Se GONE MOUS SOF 5 ccc cccvcicucsenes 1016 BR ie POO Meo renee 313 Ships and Shipping ; balancing the propellers of ocean giants 246 battleship built for movies rests on scow 811 belt and chute convey load from warehouse 753 bridge from ship to dock shows size of liner 6 buoy given spring cleaning before trip to sea 72 climbing up ‘‘Jacob’s Ladder” tests pilots’ skill 399 development of shipping from ancient log dug- ESE eee sar deceheas 446 from paddle wheel to electric drive 898 giant guns in triple turrets on British battle- ere Barns aoe ‘ bite wateae bers 816 house cleaning an ocean liner : chacaanwee huge fog siren on lightship operated by air.. 946 interior decoration of liner needs “interna- tional’’ art err cata ark a 640 Italy building fast liners for Atlantic speed ary o Ce PPE mse 23 junking old warships ....... ; ; 627 liner is cut in two to fit in bigger engines 369 oil driving steam from sea...... : 617 one of navy’s first wrought-iron ships still in service as training ship , “ . 249 peace ship’s steering wheel is museum exhibit 570 ear machine on warship keeps rowing crew ere Cea ERD Okie Wen ace ee rough weather at sea helps in shipping fruit.. 761 seagoing gardens supply flowers on liners 223 secrets of Davy Jones’ cupboard eer ship cut in three sections to make it longer 595 ship hoisted aboard vessel with boat’s derrick 81 ship’s tragic end shown in unusual photo 199 stairway in liner’s funnel leads to lookout 180 the fishermen’s race ...... > alle ig 610 . the last moments of a sinking Pacific liner.. 711 Uncle Sam’s latest treaty cruiser in “action” 604 Shoe Peddlers—go barefoot to save their wares... 632 Shoes adhesive tape on soles prevent baby from RE Sere a 837 detachable spiked sole prevents slipping... 459 overshoes go hundred miles before wearing out 592 slashed shows power of airplane propeller 640 soles vulcanized like auto tires 384 eer | anybody can become a good pistol shot 18 painted revolver sights aid vision 685 Sidewalks—cement, reinforced with wire 514 Signposts—flexible, prevent auto accidents 712 Signs—best colors for signboards... be 108 ne aew you can tell a plane by its 552 i cannon made of 714 testing ate 497 Silver—preventing from tarnishing ais 329 Sink—coil spring removes obstruction in trap.. 323 Siphon—easy method of starting 490 Skiing—wings for, add thrills of flying oy ee Skis—water, for policemen aid in saving lives 445 Skyrockets—to displace cannon in future wars 389 Skyscraper dime-in-slot binoculars on, give view of city.. 574 house on top of, has two yards............ 433 man’s mightiest monument ............... 920 walls of metal herald new building age... 192 Sled—two-wheeled motor pulls sled through snow 283 Slot Machine airplane in, teaches flying............. 766 basketball ie er = 987 Smoke—photographic smoke finder.............. 994 Smoke Evil—electrical trap to reduce......... +» 895 Smokers’ Accessories sanitary ash-tray receiver.........6.00.sc00- 253 unique holder “shoots” cigarettes <h aeieg «x0, valve in stem of pipe ends “‘bite’’ Snakes—truth about 2 6G ll Sihnie a eee Snow—a twenty-inch, represents only about two inches of water ...... wiv cin niemate ee: Cae Snowplow—rotary attached to front of truck.... 285 Snow Shovel—and squeegee combined in one tool. 808 Soap Dispenser—liqu:d, from tin can and air valve 675 Soft Collar—wire brace prevents wrinkling....... 709 Solder, Silver—expert advice on use of... fan 867 Soldering—tin roof, flux for salhatticd 689 Sound—giant organ pipes for study of........... 778 Sound Waves—thousands can hear pin drop in ET IONE: 6.5.6.2 0% ¥0es eG sake cn walter 210 Spark Plug—has double head and is reversible.... 81 Spectacles jewelers’ lens on glasses saves wearing ‘‘barrel’’ 387 shaded lens for, shuts out glare : 32 Speech—letter pictures of mouth in original alpha- ert a ee PECb. CEL GRADS KAD UEE LED ote 903 Sponges divers find million dollars annually in sea.... 542 tanned like leather 40 eh Saw bee 6 cans CI Sports, Water archery makes fun for divers............... 819 balloons draw surfboard and rider over water 4 bicycle pedals on pontoons operate water craft 465 kiddie car for use in water : vs and ee outboard merry-go-round latest a .. 450 Sports, Winter—wings for skiing add thrills of Ee iin G pe des aw bits ceed . .. 388 Spray Gun—for metal tinning...... Sprinkler—street, high speed operated by one man. 608 Squash—wins blue ribbon at historic eastern fair 737 Stairway—use of space under....... ewes de0e Stamp—double-end saves time on so ss'eeed ae Stamp Holder—self-alining oe ed wee Stamps, Postage—handy method of removing Stand—handy, for repair shops ie eZ Stationery—letter is its own envelope co~ Ce Steam—how man came to know wonders of -« 5 Steam Engine adding to temperature of feed w exhaust steam saves fuel ; rebabbitting bearings ......... rte: Steel alloy of, resists effects of heat and corrosion.. 441 cleaner keeps steel tape from becoming rusty 207 coloring for layout erties : : . 336 cutting self-hardening ater by ex- drilling hardened eal , Nay hardening in small tools . fan oi . 136 magnetic iron pencil writes on... . 905 Steel .Tower—one mile high is found practical... 913 Stencil-Tracing—is made easy by frame . 248 Stone—bends as rubber............ Sars 781 Storage Bins—from empty cans... 526 Storms—magnetic, are caused by electric ring 751 Stove, Gas—pilot light keeps water warm ...__ 857 Stoves—safety valve for gas, prevents accidents .. Street Car—noises in, reduced with trolley cushion 79 Street Car Tokens—large safety pin makes holder a... eae ce Phadavbreeh share 13 Streets ‘ sign with reflector visible night or day ; 383 vacuum cleaner for val Terere et |. Submarines carrier for, takes boat through France ..... 560 famous ‘S-51"’ makes last last trip to junk pile 645 naval junk pile receives thirteen... e+e to hunt for sunken treasure ; ; és 770 Subway—wooden car wheels are noiseless for Lon- on’s oe a 6%: aes , 37 Subway, Automobile—Paris has started construc- tion of ; * OE Sugar—produced from milk used in making candy 249 Sun—sunniest spot on continent scene of ten-year test . yikE 0tha Vibe ow aiae 637

=

Page 17

r i ee ; Jao ae ee SV. arene POPULAR MECHANICS INDEX, VOLUME LIV, 1930 17 Tools—Continued ine a x a speeds up night workers 559 how to keep free from rust “a ae a7” measured in London by small glass ball 728 hydraulic drives for 2 5 Surgery—extra-thin rubber — — surgeon motor carried on back runs. 242 , ‘ erate rer Seva 883 motor saw and polisher saves worker's time. 101 ' nipple and coupling wrench reaches hidden aah fittings .. ie > 26 T rack for the works hop 347 simple brace for speedy driving of screweyes.. 350 Tables simple method of tempering en : 138 . adjustable, for the punch press 524 staple holder saves your fingers. . ee asi bridge making lamps for.... “1032 starting small brads -- aioe card, automatic folds all legs at once. , . 602 tool clamps vise on hose. +44 kitchen folds into wall. es 681 Toothbrush—rubber disks in replace bristles 714 magic legs adjust themselves to floor...... 115 Tornado—man lives inside of, and tells what he saw 917 making a small drum . 692 Towel Cabinet—wardrobe trunk used as ... 1027 Tabulator—for bridge score like adding ‘machine 4 Towns—short names for ... 885 Tanks , Toys hot water, repair for rusted 491 amusing, easy to make ...1011 shaped like balloons for greater strength. . 213 child’s locomotive made from oil drum se 506 Tanning—rabbit skins 6 how to build a “Wabble-Go-Round” 657 Target how to build that cycle car set 2 anybody can become a good pistol shot... 18 jumper operates like teeter-totter... - 814 machine gun fired by air to aid practice..... 37 junior electric stove easy to make a 87] moving target makes expert marksmen.. 318 man rolls uphill Wii 307 Taxes li t i 1929. 952 mass production of cars speeds up work se an gasoline tax paid in 702 model train track stand folds when not in use 84 Telegraphy—new teleprinter sends cables direct 193 rubber-band guns for boys arsenal 674 Telephone . 893 seaplane built for child has four mile speed 781 a with gas 766 = horse on rockers gets power from ve _ fad rider .. 7 ———_ with dictaphone — newspaper re 785 wheel sets for empty cans make toys for chil- orting ‘ , : -_" made from oilcans 1016 Dinos dren ..... ee é ~ — —! s — out noise : onst brush cutter run by, clears new land 223 po .~ ne b dio and wire a 9 fitted with crade speeds handling ee. 458 the world’s Bret pao ay train.. . 14 handy fuel tender for farm 853 ay BOS vocabularies used by the world.... aa . 533 ae Suet ae on ; oe oa vorld’s exchange ; aa 624 queer, oes wor of six horses -» 282 eo Cabinets—built-in 676 two-wheeled, pulls sled through snow 283 Telashens Directory — Traffic . index letters save time for user sae 273 automatic traffic recorder : 94 old, turned into roofing paper 263 directing auto traffic from a captive balloon. . 883 Telescope elevated highway for autos we 955 search for new stars aided by mirror i «oe first speed law in America 976 with stop watch helps catch speeders 288 ‘paint donkey” saves money on stripes to direct 118 Temperature rear-view mirror in goggles for officers ws 465 lawn sprinkler on roof keeps ns. cool 632 Transportation room at seventy may still be cold... . 399 a pageant of transportation shows over twenty Tennis centuries of travel ‘ ; 956 ball visible in dark has luminous coating 631 nail-less bands for boxes reduces shipping cost 219 mechanical “‘partner’’ permits practice alone 981 Trapping—sure-catch snare for wolves and coyotes 839 press from racket exerts even pressure 221 Travel Testing are things as good as they used to be. . 214 test warmth of overcoats on refrigerating coils 419 Theater first television show , , 177 lead coat on wall improves acoustics 976 live trees on stage serve as scenery 884 luminous programs readable in dark. ; 645 magic “eye” for opera aids lighting effects 943 Thermometer—gnat’s wings help to record heat of the stars 386 Ticket Holder—waterproof, made from old inner tube : at 56 Tile—lightweight, in colors made at low cost 910 Timber—wanted an inventor to end waste of..... 66 Time where the earth’s surface begins—and ends... 928 world ways of telling, total sixty-three. 109 Tin—testing ore for 777 Toad—venom may yield drugs to fight heart disease 118 Toaster—asbestos sheet speeds : 141 Tobacco—grown under tent §32 Tobogean—made of corrugated sheet stecl oe heat Tool Box—bench, and ladder contained in suitcase 223 Tool Case—hookless fastener improves ; 848 Tools a thousand years old still makes parchment... 807 adjustable gasket cutter 350 attachment makes drill chuck of automatic screwdriver 164 awl for screwdriver blade makes double duty tool ‘ 25 for cutting strips .. oy 340 for turning fibre and hard rubber 866 gun that drives staples eliminates hammer 96 hardening small ; : os oe how you could circle the world in five minutes 383 transportation pageant shows twenty centuries of travel 956 Treasure Hunting submarines used in “i . 770 diving for $5,000,000 .. 705 Trees bark of, resists fire 13 barkbeetles slain by acid forced ‘into 365 carvings on oak depict fairyland characters 751 fertilizer most near tips of roots : 397 old stovepipe protects young wi 836 palmetto roots and cement used for making furniture es a 65 sap often freezes 570 secret of dwarf Jap pines ‘lies in special diet 396 spraying tall oa 341 tops of. like desert plants 784 ultraviolet rays used to tell troubles ' 735 use barrel of water a day in summer 586 why leaves fall in Finan A 450 Trestle—carpenter’s, aids in ripsawing ss 1055 Tripod Drill—converting into a power hammer. 1043 Trolley—overhead, and basket for transporting bag- gage at railway station a 209 Truck for storage batteries ca 704 refuse, self filling eliminates dust 375 transports boxes horizontally 349 with flexible floor unloads automatic ally 271 Truck Box—metal cover for. &80 Trunk—make yours mothproof 509 Tubes, Metal —seamless, are made electrically. . 190 Tubing—is bent by spring coil without flattening 262 Tumbler—how to handle hot beverage in 510

Page 18

18 POPULAR MECHANICS Tunnel R automobile, connects Detroit with Windsor, Ont. eka os 0” strangest, to join Europe and Africa Turntable—autos are turned in street by Turtle—caught with lasso weighs third of ton Typewriter hand drill makes polisher for keys of word counter for the Ultraviolet Rays clam-shell aaiabioes admits given off by ordinary gas stove invisible rays made visible by shining on min- erals + used to tell tree troubles ws Umbrella makes folding minnow net oil hinged joints of . aa shelter made from large Uranium—made by electricity rays ‘ — measures V Vacuum Bottle—handle for.. Vacuum Cleaner for streets .. gets rid of rock dust in England’ $s mines helps clean motors and switchboards magnet attachment on removes machine chips Vacuum Tube Valves—new way to reseat Varnish bookbinder’s, can be remover, homemade Vase—rubber, for flowers Vehicle—cycle car operated by passenger made hand carries Vendor—hot dog cart like an engine tomers Vibrator—portable electric he Vineyards—tractor-drawn shredder for Violin an amplifier for the made of match sticks work of high school boy for beginners has not sounding board silent, Vise improved woodworker’s pipe improvised made from cable clamp Vision—range of, Vitamins—health’s mysterious allies Volcanoes—volcanometer on Mount Pelee WwW Walks—of colored concrete laid in fancy Wall Decorations—photo murals are newest Wall Fixtures—to match your woodwork Wallpaper aluminum coated electric paster fits roll for hanging. Walls—baseboard blocks save bedroom Warfare navy battle in show window is run by clock periscopes hidden in mirrors protected by Ger- man “subs” “Port Arms” through the ages feature of army show rockets to displace cannon in future. Warfare, Aerial better plane-gun Sam .. mounting sought by rear-view mirrors aid pilot sight tail-firing gun warship mounted on truck target War Maneuvers- for planes Washington Monument hance beauty of Waste Holder—for sunken gardens to the garage Watch emergency aid for wet mounting photos in cover of that shows the date Water disinfecting with iodine measuring flow of, with compressed air measures heat radiated by star invisible s one attracts cus- widens fast at high altitudes. . patterns Uncle en oO = NNN UW wu NOON DW 428 389 629 568 339 852 848 959 681 870 INDEX, VOLUME LIV, 1930 Waterfalls—higher than Niagara found in Water Lillies—giant, given bath to keep healthy : Water, Lithia—served free at public fountains Water Marks—removing from table top Water Pipes—-test plug for, helps in backfilling Africa Water Sports-—scooter provides thrills at beach.. Water Tower Weather aviators avoid bad, “doldrums” electric light in balloon tells wind direction flares warn pilots as to. ~tall, to fight fires in skyscrapers at six-mile altitude flying weatherman gathers wata from airplane heat radiated by earth new gauge how high up does the atmosphere extend? long-distance weather seen in polar trips. low humidity is fire hazard of forest low-water mark set in rivers by drouth magnetic storms caused by electric ring queer facts about fog queer things that fall from the sky... rain making fails by patented methods temperature found to vary with solar changes to confusion varying names of same wind lead what is a cloudburst? what the clouds tell flyers - what the weather man can tell you wind tunnel makes its own flying weather Weather Vanes—novelty .. Welding ~ we jobs assured with gas regulator cracks in castings magnet test on weldings reveals de fects. portable welder run by auto power Whaling—races revive days of Wheelbarrow runner for track on cleated incline Whistles—train and steamer Windmill—old, pumps new well Window Display lawnmower for store : navy battle in show window is run | by clock. Windows awning-shutter stops wind and rain casement, adjuster works through screen closed by falling rain ne cut-outs make shutters attractive electric window washer cleans and dries them of air cause disastrous hurricanes scaffold supports from angle iron for washing solution for washing sills keeps insects out Window Shelf—for potted plants Wire Gripper—for flat stock Wire, Singing Piano—records motor-shaft Wire-Stripper- foot-operated for Wood flame and waterproofing how to bleach a stain in - metal bath makes, fire-resistant millions of years old found to be sequoia. . mirrors made of polished pliable as leather hung like wallpaper saw handles and pipe bowls from same wood veneers as thin as paper now mercial scale ss s Wood Carving—-caricatures in wood show artist Woodworking cutter for homemade router improved vise for moisture content cator ornamental reeding and fluting twist electrician agent for. of wood sandpapering square edges on small ma shine bases Workbench “harilette’” serves as vise screw handy outlet for the hinged miter box can be swung out of way oil drum makes good support for made on com measured by indi skill of 807 791 602 665 255 148 418 24 762 939 395 193 182 983 946 800 606 953 90 858 171 348 850 paper roll supplies continuous bench covering 1036 portable, saves mechanics time. . Workshop buffing head makes vertical flywheel for hand emery sander grinder grinder, small emery. made from odds and ends handy soapstone holder handy stand for repair shops 335 Mwy = AOornso S Pd / . 4 > Wre

Page 19

POPULAR MECHANICS INDEX, VOLUME LIV, 1930 Workshop—Continued linoleum proves useful to cabinetmakers measuring segments in the lathe milling an accurate key way quick return for arbor press.. saw-filing stand for self alining stamp _ holder starting small brads.. tool box bench. and ladder contained in suit- case , tool racks for the ws traveling chair aids workmen vacuum cleaner removes machine chips wire gripper for flat stock bite en World’s Fair—‘‘Sky hooks” to support roofs of, building ote Wrench—nipple and coupling, reaches hidden fit tings . Xx new es found in industry for secret of life sought in mystery ray small tube operates at high voltage Y Yeast- fed to cows improves milk for infants Z Zeppelins—defy lightning.. 0° island home for monkeys at Cincinnati over thousand crocodiles ciried by two trains for French 540 564 SRR 539 w wn co A

Page 20

: