Issue: 19460201

Friday, February 1, 1946
FEB.1946
2
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148
Monday, January 12, 2015

Articles
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POPULAR SCIENCE
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D. Van Nostrand Co., Inc.
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D. Van Nostrand Co., Inc.
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PopularScience_19460201_0148_002_0003.xml
masthead
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POPULAR SCIENCE
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PopularScience_19460201_0148_002_0004.xml
tableOfContents
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FEBRUARY 1946
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PopularScience_19460201_0148_002_0005.xml
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3
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GREENBERG: PUBLISHER
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GREENBERG: PUBLISHER
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PopularScience_19460201_0148_002_0006.xml
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4
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Advertisement
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PopularScience_19460201_0148_002_0007.xml
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5
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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PopularScience_19460201_0148_002_0008.xml
article
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These editors are ARTISTS
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These editors are ARTISTS
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Pictures are a big part of Popular Science Monthly. Pictures that tell a story all their own; pictures that illustrate a point or a process; pictures that let you look inside whirring machines; paintings, drawings, and photographs to show you how things work or how to make things.
PopularScience_19460201_0148_002_0009.xml
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7
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UNITED STATES RUBBER COMPANY
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UNITED STATES RUBBER COMPANY
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PopularScience_19460201_0148_002_0010.xml
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8
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HOBBY BOOK MART
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HOBBY BOOK MART
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PopularScience_19460201_0148_002_0011.xml
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9
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Advertisement
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PopularScience_19460201_0148_002_0012.xml
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10,11
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MR. J. E. SMITH
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MR. J. E. SMITH
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PopularScience_19460201_0148_002_0013.xml
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Advertisement
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PopularScience_19460201_0148_002_0014.xml
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13
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CHARLES ATLAS
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CHARLES ATLAS
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PopularScience_19460201_0148_002_0015.xml
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14,15
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CLARENCE A.O'BRIEN & HARVEY B. JACOBSON
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CLARENCE A.O'BRIEN & HARVEY B. JACOBSON
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PopularScience_19460201_0148_002_0016.xml
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16
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PYROIL COMPANY: PYROIL
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PYROIL COMPANY
PYROIL
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PopularScience_19460201_0148_002_0017.xml
article
16
16,18
LETTERS
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LETTERS
Telewire
Pu
Photodimmers
Campaign Bars; Battle Stars
Breathless Rockets
War and Peace
Cyclotron Champion
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Sir: We have wire-recording phonographs. Why don’t we have wire-recording cameras? The picture, in motion, would be taken with a television sending set and recorded. Then it would be projected with a television receiving set. Any bad shots could be erased.
PopularScience_19460201_0148_002_0018.xml
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17
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McMORROW & BERMAN
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McMORROW & BERMAN
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PopularScience_19460201_0148_002_0019.xml
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18
18
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Newspaper Institute of America
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Newspaper Institute of America
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PopularScience_19460201_0148_002_0020.xml
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19
19
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THEO. AUDEL & CO.
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THEO. AUDEL & CO.
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PopularScience_19460201_0148_002_0021.xml
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20
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PopularScience_19460201_0148_002_0022.xml
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21
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SPRAYBERRY ACADEMY OF RADIO
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SPRAYBERRY ACADEMY OF RADIO
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PopularScience_19460201_0148_002_0023.xml
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22,23
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H. C. Lewis
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H. C. Lewis
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PopularScience_19460201_0148_002_0024.xml
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PopularScience_19460201_0148_002_0025.xml
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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PopularScience_19460201_0148_002_0026.xml
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PopularScience_19460201_0148_002_0027.xml
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MoToR Book
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MoToR Book
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PopularScience_19460201_0148_002_0028.xml
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28
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PopularScience_19460201_0148_002_0029.xml
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29
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DeFOREST’S TRAINING, INC.: RADIO PARTS
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DeFOREST’S TRAINING, INC.
RADIO PARTS
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PopularScience_19460201_0148_002_0030.xml
article
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30
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SO IT NEEDS FIXING
What to Charge?
The Future Offers
If You Are Ambitious
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S. T. CHRISTENSEN
"WELL I guess I’m the fellow to see, for I’ve repaired thousands of refrigerators (home and commercial both), vacuum cleaners, radios, washing machines, irons, fans, lamps, mangles, motors, etc. In fact, many of my customers call me their “electrical appliance doctor.
PopularScience_19460201_0148_002_0031.xml
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31
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CHRISTY SUPPLY CO.
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CHRISTY SUPPLY CO.
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PopularScience_19460201_0148_002_0032.xml
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PopularScience_19460201_0148_002_0033.xml
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National Schools
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National Schools
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PopularScience_19460201_0148_002_0034.xml
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34
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PopularScience_19460201_0148_002_0035.xml
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NORTHROP AERONAUTICAL INSTITUTE
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NORTHROP AERONAUTICAL INSTITUTE
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PopularScience_19460201_0148_002_0036.xml
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PopularScience_19460201_0148_002_0037.xml
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Plastics Industries Technical Institute
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Plastics Industries Technical Institute
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PopularScience_19460201_0148_002_0039.xml
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MURRAY HILL BOOKS, INC.
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MURRAY HILL BOOKS, INC.
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PopularScience_19460201_0148_002_0040.xml
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PopularScience_19460201_0148_002_0041.xml
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NELSON COMPANY
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NELSON COMPANY
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PopularScience_19460201_0148_002_0042.xml
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PopularScience_19460201_0148_002_0046.xml
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46
46
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Advertisements
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U.S. Gov't BOLO KNIFE
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MESS KITS
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PopularScience_19460201_0148_002_0047.xml
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47
47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63
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Classified Opportunitie s
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PopularScience_19460201_0148_002_0048.xml
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RADIO CORPORATION of AMERICA
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RADIO CORPORATION of AMERICA
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PopularScience_19460201_0148_002_0049.xml
article
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65
SCIENCE NEWS
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The Scientist Meets the People
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CLOISTERED for centuries, the scientist has suddenly found himself caught in a crowd and sharing, for once, the fears of the people. For the bomb which blew up the war also blew down the barrier between the scientist and the citizen. Because of his nature and his work, the scientist has been a man apart.
PopularScience_19460201_0148_002_0050.xml
article
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66,67,68,69,70
PSM FEATURES
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WHY U.S. NEEDS MORE SHIPS
Superliners for Main Ocean Highways Can Meet Air and Foreign Competition
WAR SHIPPING WON’T HOLD WORLD TRADE
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LEON SHLOSS
AMERICA’S postwar ocean liner will be a racy, streamlined, air-conditioned vessel 50 percent faster than her prewar cousin and packed with more comfort for passengers. This is the superliner designed to spearhead the campaign to hold the United States merchant marine at its present world supremacy, to increase by 150 percent American prewar foreign trade carried in American bottoms, and to stave off competition by the airplane which maritime leaders admit is inevitable.
PopularScience_19460201_0148_002_0051.xml
article
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71,72,73,74
SCIENCE NEWS
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HOW DDT Really works
Wonder insecticide has limits, and you had better know them.
Don't Do This
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DR. C. H. CURRAN
DDT, the wonder insecticide, may be a blessing—but can be a curse. Properly used, it can eliminate many insect-borne diseases. Scattered broadcast over field and forest it may harm our fish and wild life, kill the helpful insects essential to agriculture, and even damage the crops themselves.
PopularScience_19460201_0148_002_0052.xml
article
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75
AVIATION
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BALLAST TAKEN ON ALOFT
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THE U. S. Navy is experimenting with a means of solving one of the vexing problems of long-range dirigible flight. If a Navy-designed, water-pickup device works, airship men will not have to worry about balancing off the weight of their aircraft against the lift of the gas cells.
PopularScience_19460201_0148_002_0053.xml
article
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76
MECHANICS & SHOPCRAFT
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FLEXIBLE DRILL EXPLORES UNTAPPED OIL SANDS
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WITH a turbine bit actuated by mudwater and a pipe that can be curved and straightened at the will of the operator, John A. Zublin of Los Angeles has been able to reach sands in oil strata heretofore untapped in drilling for petroleum. In tests of his apparatus, an oil well’s production has been increased as much as 20 times.
PopularScience_19460201_0148_002_0054.xml
article
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76
RADIO & ELECTRICITY
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"Explosion-Proof" Motor Snuffs Its Own Fires
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THE possibility that fuel vapors, leaking into airplane interiors, might be exploded by a spark from an electric motor led the AAF to institute a test for sparkless motors. The tests were conducted by putting motors into a cylindrical tank and piping highoctane vapors both into the motors and around them.
PopularScience_19460201_0148_002_0055.xml
article
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77
SCIENCE NEWS
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GRINDING OF 200-INCH MIRROR RESUMED AFTER 3 YEARS
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GRINDING of the world’s largest mirror, due to be ready in 18 months for the big telescope on Mt. Palomar, California (P.S.M., Jan. ’46, p. 130), has begun again after a wartime layoff of three years. The 200-inch disk, after a delicate and difficult cross-country journey, arrived in 1936 to be ground and polished in a machine 30 feet high (P.S.M., Dec. ’35, p. 29), built for California Institute of Technology.
PopularScience_19460201_0148_002_0056.xml
article
78
78,79,80,81
AVIATION
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Lorne marks the sopt where you are!
War-developed electronic navigation puts sextant in the nautical museum.
LAMP GUIDES LANDING PLANE SAFELY DOWN PATH OF COLORED LIGHT
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DEVON FRANCIS
A COUPLE of pencil points of light on a fluorescent screen, measuring time in millionths of a second, have given airplanes and surface ships, for the first time in the history of navigation, a means of plotting their positions almost instantaneously.
PopularScience_19460201_0148_002_0057.xml
article
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82,83
INVENTIONS
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SECTIONAL CANOE IS EASY TO CARRY
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ED LINK, the man who invented the famous earthbound training machine for instrument flying, got vexed one day because he couldn’t find a satisfactory collapsible canoe that he could tote along with him on hunting and fishing trips. So he designed and built one of his own.
PopularScience_19460201_0148_002_0058.xml
article
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84,85,86,87,88,207
SCIENCE NEWS
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Doom on the wing
New missiles themselves at light, heat, or metal
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JAMES L. H. PECK
FELIX IS a sleek and sullen cylinder lying quietly in a wheeled cradle. His head, apart from Felix, is poised on a ball-bearing turntable. As you enter the vast hangar where Felix and his friends are housed, the head points at you, and continues to point at you no matter how quickly you turn, advance, or step back.
PopularScience_19460201_0148_002_0059.xml
article
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89,90
SCIENCE AT WORK
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Navy’s Compression Still Makes Fresh Water Cheap
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GOLD V. SANDERS
TIRED and dirty war travelers, dropping down on the map-dots that were the airways steppingstones across the Pacific, would rush for the washroom to clean up. There, very often, the shuttling Army and Navy men and the war correspondents would see a crudely lettered sign:
PopularScience_19460201_0148_002_0060.xml
article
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91,92,93
SCIENCE AT WORK
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NAVY'S pin-up BOXES
Those versatile pontoons the Seabees used will bob up in many ways in postwar ports.
Stringing Pontoons into Barges
Putting the Power On
HOW NL PONTOONS WERE USED
ON WARTIME WATERFRINTS
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W. MACK ANGAS,
SECRETS of the “magic boxes” with which the Navy’s fast-working and hard-fighting Seabees performed waterfront miracles during the war (P.S.M., Aug. ’44, p. 137) are now fully revealed for use in peacetime harbors. The NL (Navy Lighterage) pontoon, which well earned its nickname of “magic box,” was developed for the Seabees by the Bureau of Yards and Docks, and undoubtedly made possible some of their outstanding achievements.
PopularScience_19460201_0148_002_0061.xml
article
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94
SCIENCE NEWS
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Movies by TELEVISION
Swiss Use Film of Oil For Theater-Size Image.
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JOSEPH ISRAELS
ZURICH, Switzerland—Television images have been projected on a full-size motion-picture screen at the Swiss Federal Institute of Technology by Prof. Fritz Fischer, with the help of a secret petroleum product. This liquid is called “Idophore” and Prof.
PopularScience_19460201_0148_002_0062.xml
article
95
95,96,97
AVIATION
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WHAT'S NEW IN AVIATION
Streamlined Power Plant
Wasp Majors to Power Many New Sky Giants
Speaker in Dome
Two Tugs, It's On
Dynamometer Tests Giant Tires
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ONLY 33.5 inches in diameter, this 2,500-horsepower, liquid-cooled engine (left) is recognized as the most powerful of its size. Designed and built by Chrysler Corporation’s Engineering Division for the AAF, its inverted V design provides better pilot visibility, reduces drag in flight, and helps to conserve fuel.
PopularScience_19460201_0148_002_0063.xml
article
98
98,99
PSM FEATURES
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ROUNDUP ON GUAM
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NOT long after United States Marines had completed a “rabbit hunt” for Jap troops hiding out in the hills of Guam, representatives of the American Military Government aided the native Chamorros in staging a roundup of their cattle, which the natives had turned loose in the jungle rather than allow the Japs to seize the animals when the island was invaded.
PopularScience_19460201_0148_002_0064.xml
article
100
100,101
PSM FEATURES
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WHAT ONE ARTIST SAW OF THE WAR
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THE gifted pen and brush of Lt. Mitchell Jamieson, USNR, have recorded war scenes with a poignancy hardly matched by the millions of words that have been written. Dashing with invasion troops onto Sicily’s shores and the bloody Normandy beaches, traveling in convoys, and landing with Marines on Okinawa, Jamieson has caught the drama of men and machines at the business of war.
PopularScience_19460201_0148_002_0065.xml
article
102
102
NEW TOOLS
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NEW TOOLS
Die-less Duplicating Saves Time and Money
Standard Nuts Fit New Floating Anchor Unit
Toggle-Lever Switch Delays "Shut-Off" of Electricity
Portable Miller Can Be Quickly Attached to Lathe
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A COMPACT and portable precision unit, the Di-Acro Bender is designed to form and duplicate an unlimited variety of parts and pieces— eliminating, in many cases, the need for special dies. Benders can be set up on the job to shape all ductile materials, including round, half-round, square, and hexagonal rods; tubing, angle channel, and moulding stock.
PopularScience_19460201_0148_002_0066.xml
article
103
103
INVENTIONS
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I'D LIKE TO SEE THEMMAKE...
Everybody hat his own pet idea of some gadget he would like to tee in general use. What it YOURS? Popular Science Monthly will pay five dollart for every tuch suggestion published.
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THERE’D BE FEWER FIGHTS at baseball games if an automatic umpire, controlled by photoelectric cells, were used. These cells could be adjusted to the height of the man at bat and could be made to record all plays. It’s the idea of Jack Greenfield, a Brooklyn, N. Y., fan.
PopularScience_19460201_0148_002_0067.xml
article
104
104,105,106,107,108,109
PHOTOGRAPHY
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DEVELOPING COLOR FILM AT HOME
PROCESSING IN YOUR OWN DARKROOM GIVES YOU THE FUN OF SEEING YOUR TRANSPARENCIES BLOSSOM TO FULL LIFE
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KENNETH S. JOHNSON
ANYONE who can develop black-and-white negatives can develop color film. The process takes longer, and there are several more steps required, but home developing has a satisfaction for many amateur photographers who like tó see the image forming in the tray within a few hours of snapping the shutter, instead of waiting days for the processed transparency.
PopularScience_19460201_0148_002_0068.xml
article
110
110,111
INVENTIONS
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NEW IDEAS FROM THE INVENTORS
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ALL-SEASON SKATES are an invention of Reuben E. Paystrup, of Levan, Utah. The person who wears these unconventional roller skates can play in a game of ice hockey as readily as he can roll along cement sidewalks. Each skate has a single front and rear wheel, instead of the usual two.
PopularScience_19460201_0148_002_0069.xml
article
112
112,113,114,115,116,117,118,119
PSM FEATURES
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WHAT MAKES A RUG GOOD?
New carpets are coming, but knowing how rugs are made still helps in judging quality.
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GOLD V. SANDERS
IF YOU are among the millions who have been hiding the bare spots in the parlor rug during the war years, you should know what the carpetmakers have on the looms before you rush out to buy that new rug. There are some new wrinkles in this centuries-old trade.
PopularScience_19460201_0148_002_0070.xml
article
120
120
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“ROC," NEW SKY TERROR
This radio-controlled missile, painted like a circus wagon, televises its view of the target to distant launching plane.
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THE ROC, a radio-controlled bomb named for the fearful bird which Sinbad the Sailor encountered, is one of the new guided missiles which may help preserve peace or win another war. A product of Wright Field’s ATSC and Douglas Aircraft Corp., the bomb is brightly painted, has a television “eye,” and a round “shroud” wing.
PopularScience_19460201_0148_002_0071.xml
article
121
121,122,123,208
SCIENCE AT WORK
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HOW TO HUNT FOR URANIUM
Prospecting for the source of atomic power calls for scientific instruments as well as for pick and shovel
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URANIUM, long the homely sister of the glamour metal, radium, is now the Cinderella of the Atomic Age. It stands 25th among the elements in order of abundance, but is scattered so widely through the earth that only a few large deposits are known.
PopularScience_19460201_0148_002_0072.xml
article
124
124,125
SCIENCE AT WORK
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Science Works with FOOD
HIGH-FREQUENCY HEATING UNIT KILLS BREAD MOLD, SAVES MONEY
ADD WATER, AND DINNER IS READY!
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The battle against bread mold, bane of bakers and housewives for centuries, is being won by science. Dr. William H. Cathcart, 34-year-old head of the A & P national bakery laboratories, has adapted the megatherm, a high-frequency heating unit, to de-mold bread as it takes a five-second “ride” in its wrapper through a special oven.
PopularScience_19460201_0148_002_0073.xml
article
126
126
PSM FEATURES
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Decoy Army Fooled Nazi Master Minds
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LANDING craft, tanks, trucks, antiaircraft and antitank guns, and various other field artillery pieces, blown up with compressed air like gigantic Tony Sarg figures to represent large convoys and emplacements, made up an American "ghost army” that completely fooled the Nazis and played a highly strategic role in European operations.
PopularScience_19460201_0148_002_0074.xml
article
127
127,128,129
SCIENCE AT WORK
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RUBBLE to rebuild GERMANY
Prof. Reutlinger's vibrating "table," which shakes molds of ground-up debris and cement into bricks of adequate strength, and his 65-hour curing process may overcome seemingly hopeless shortages of materials, of coal, and of skilled workers.
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CARL LEVIN
HARTLEY E. HOWE
IF THE trains, and the coal to run them, and a dumping place for the rubble were all available, which they aren’t, it would take ten 50-car trains a day to clear away the ruins of Berlin. It would also take 16 years. In the meantime, all the inhabitants would have to worry about is how to rebuild in the face of shortages which leave no coal for kilns, no steel for beams, and few skilled workers.
PopularScience_19460201_0148_002_0075.xml
article
130
130,131,132
PSM FEATURES
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GI'S BUILD own TRANSPORT
"Give me 50 men and 48 hours," the colonel said —Four days later 534 men started home•
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[no value]
Larry McManus
BLUNT-NOSED, boxlike Liberty ships designed exclusively for carrying cargo are returning thousands of high-point veterans to the United States despite dark predictions by “experts” that it was impossible. An admiral once testified before a Senate committee that it would take two months and $250,000 to convert a Liberty into a troopship.
PopularScience_19460201_0148_002_0076.xml
article
133
133
SCIENCE AT WORK
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NEW WIND MACHINE BLOWS FROST AWAY FROM CITRUS FRUITS
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ON CALIFORNIA nights when occasional freezes threaten the crops, thousands of acres of citrus and deciduous fruits are protected from frost by moving air. The air is driven continuously by revolving wind machines carrying their own gasoline supplies in the pipe columns on which they turn.
PopularScience_19460201_0148_002_0077.xml
article
134
134,135
PSM FEATURES
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USO Backs PSM Contest
OFFERS TOOLS, MATERIALS TO GIs SEEKING $3,300 PRIZES
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THE USO, in a typically warmhearted gesture prompted by the celebration of its fifth anniversary, has placed the workshop facilities of its thousands of clubs in this country and overseas at the disposal of servicemen and women who want to submit entries in the GI Handicraft Contest sponsored by POPULAR SCIENCE MONTHLY.
PopularScience_19460201_0148_002_0078.xml
article
136
136
modern living
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modern living
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WATERPROOFED WASH is in prospect for housewives who add a few drops of Socony Vacuum’s new Fabrisec Emulsion to the family’s laundry. The solution contains paraffin-wax particles, and some of these are deposited on the cloth fibers. Water, poured through a sprayer, rolls right off the treated cloth shown at the left.
PopularScience_19460201_0148_002_0079.xml
article
137
137
AUTOMOBILES
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SPRINGLESS TRAILER RIDES ON AIR RELLOWS
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BELLOWS containing compressed air may take the place of metal springs in your car of the future. Such bellows, made of rubberized fabric, are employed in a new method of absorbing road shock developed by the Firestone Tire & Rubber Company.
PopularScience_19460201_0148_002_0080.xml
article
138
138,139,140,141
AUTOMOBILES
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OIL PRESSURE DRIVES NEW GEARLESS CAR
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[no value]
[no value]
Charles T. Pearson
LACKING a transmission, drive shaft, and differential, a revolutionary new car has been undergoing tests in Detroit. Several pumps are directly connected to the engine crankshaft, and oil under high pressure is forced through pipes to “motors” located at the wheels.
PopularScience_19460201_0148_002_0081.xml
article
142
142,143,144,208
AUTOMOBILES
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A Nut Gets Loose in the Model Garage
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Martin Bunn
"AND that, gentlemen,” wound up the speaker, blinking his pale-blue eyes rapidly and running nervous fingers through his unruly mop of sandy hair, “that is the mission of the psychiatrists of the professional staff of Walnut Lodge—to restore to those unfortunates their priceless heritage of mental stability and emotional tranquility.
PopularScience_19460201_0148_002_0082.xml
article
145
145
AUTOMOBILES
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USEFUL AUTO HINTS
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1 A BACK-SEAT PLAY PEN will give a baby room to move around in the rear of a car without falling off the seat. It’s formed by sliding in a plywood-topped table the exact height of the back seat and shaped to conform to the curve at the back of the front seat.
PopularScience_19460201_0148_002_0083.xml
article
146
146,147
HOME MECHANICS & HANDICRAFT
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THREE-LEGGED SHOP STOOL CAN'T TEETER
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H. W.
TWO MINDS may be better than one, but there are times when four legs are not as good as three. It long has been recognized that an object supported at three points— no more, no less—will rest firmly and evenly on an irregular surface. For that reason, this stool won’t give annoyance by teetering on an uneven floor just when you’re performing some exacting workshop task.
PopularScience_19460201_0148_002_0084.xml
article
146
146,147
HOME MECHANICS & HANDICRAFT
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SPECIAL MOLDING ROUGHED WITH JIG ON SMALL SHAPER
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E. M. L.
STOCK cutters that come as standard equipment with a small spindle shaper will only produce moldings that have profiles composed of straight lines or arcs of circles. But with a column jig such as the one shown here, the shaper also can be used to do the roughing when a molding with an elliptical or a freehand section is desired.
PopularScience_19460201_0148_002_0085.xml
article
148
148,149,150,151
MECHANICS & SHOPCRAFT
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HOLD EVERYTHING!
Here's a Fashion Parade of Fasteners for the Home Craftsman, Including Some of the Tricky New Ones Devised During the War.
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Walter E. Burton
REMEMBER the horseshoe nail for want of which a kingdom was lost? Craftsmen whose projects have been impaired through the failure of a screw or bolt, rivet or nut, will readily appreciate that crucial nail. Many ingenious new fasteners were developed in war production, and many of the more familiar ones were modified for greater holding power or more convenience in use.
PopularScience_19460201_0148_002_0086.xml
article
152
152
HOME OWNERS
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HOME OWNERS
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LIVING IN GLASS is receiving increasing attention. Here are a sketch and plan of a house using glass generously along the walls. The design, by Mr. and Mrs. Norman Fletcher, of Birmingham, Mich., won first prize of $2,500 in a contest sponsored by the Pittsburgh Plate Glass Company.
PopularScience_19460201_0148_002_0087.xml
article
153
153
MECHANICS & SHOPCRAFT
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FORGE YOUR OWN CARVING CHISELS
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E. M. L.
FLAT files and umbrella ribs afford excellent steel for making both small and arge carving chisels. They can be heated for forging with a blowtorch set up to blast into a small pocket or oven of loose stones or bricks. As a jig for hollowing gouges, clamp a piece of angle iron in a vise or support it in a groove cut in a block of wood.
PopularScience_19460201_0148_002_0088.xml
article
154
154
WHAT’S YOUR INGENUITY QUOTIENT?
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WHAT’S YOUR INGENUITY QUOTIENT?
Have you pulled off a smart one lately? We will pay for each contribution accepted for this page showing ingenious solutions of problems in the home, shop, garage, or camp. It doesn’t matter if it’s wacky—if it works.
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A. P. YOUNG
BERTRAM BROWNOLD
EUGENE A. REESE
FRANCIS FAGAN
AN ESKIMO I'M NOT, so I don’t relish shivering on chill mornings while nursing my cottage stove into life. To keep my corpuscles from congealing, I fixed up a stack of portable prelaid fires—cardboard boxes with draft holes, paper, and wood shavings.
PopularScience_19460201_0148_002_0089.xml
article
155
155
SCIENCE AT WORK
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Model Housing Accents Modern Family Life
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WITH emphasis on the family, a group of well-known American architects showed these scale-model homes, all designed to meet the needs of those having two to four children and an income of from $2,000 to $3,000 a year. Each home contains three bedrooms, ample living and dining space, a modern kitchen and laundry, plenty of closets, and a garage with room for a workshop and storage.
PopularScience_19460201_0148_002_0090.xml
article
156
156
HOME MECHANICS & HANDICRAFT
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Round Tenons Are Quickly Cut with Revolving Jig and Dado Saw
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E. M. L.
USED with a dado saw, this jig provides a quick and accurate way of cutting round tenons on wooden rods. It consists of a block of wood pierced by a circular socket in which a plug, turned to a sliding fit, revolves while holding the work. A bent rod through the block serves as a length gauge.
PopularScience_19460201_0148_002_0091.xml
article
156
156
HOME MECHANICS & HANDICRAFT
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Decorative Bracket Puts Prune-Juice Bottle to Work as Ivy Jar
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GLENN A. WAGNER
SUSPENDED in this bracket, an ordinary prune-juice bottle becomes an attractive ivy jar. In addition to the bottle, the materials required are a piece of band iron, two roundhead rivets, two key chains, and two small cotter pins. From the band iron cut three pieces to the lengths shown in the drawing, and on each scribe lines where the metal is to be bent.
PopularScience_19460201_0148_002_0092.xml
article
157
157
HOME MECHANICS & HANDICRAFT
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Miniature Mantel Clock Has Secret Jewel Drawer
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WILLIAM FREEMAN
COPIED from an 18th Century model, this little mantel clock has its own secret—a hidden drawer in the lower section for valuables. A case sliding into the front encloses a small eight-day clock or watch. The framework consists of sides ¼" by 19/16" by 8¼", between which two cross members are butted, one ¼" by 1½" by 3½" at the top and a second ¾" by 1½" by 3½" with its lower edge 3⅞" from the bottom.
PopularScience_19460201_0148_002_0093.xml
article
157
157
HOME MECHANICS & HANDICRAFT
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Caged Animals Are Party Favors
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BENJ. NIELSEN
CERTAIN to delight childish fancy, this circus place favor consists of two paper saucers, about a dozen round toothpicks, a tiny animal bought in the dime store, and a whole-grain breakfast cereal on the floor as sawdust. If the animals are candy or cookies all the children undoubtedly will want to turn them lOOSE!
PopularScience_19460201_0148_002_0094.xml
article
157
157
HOME MECHANICS & HANDICRAFT
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Palette Knife from Saw Blade
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J. H. CLICK
DISSATISFIED with the ordinary palette knife, I designed and made my own by inserting a 4" section of a soft-back hacksaw blade in a hardwood handle ⅜" by ⅝" by 8". The blade, bent without heating, was ground on the flat side of an emery wheel to taper from full thickness at the heel to quite thin at the point, and the edges were ground so that the width decreases from 5/16" at the handle to ¼" at the tip.
PopularScience_19460201_0148_002_0095.xml
article
158
158,159
HOME MECHANICS & HANDICRAFT
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Scaling Down the Tigercat
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Paul Plecan
ONE of a line of Grumman Navy fighter planes, the Tigercat easily surpasses the performance of its famous predecessors, the Wildcat and Hellcat. Powered by two 2,100-hp. Pratt & Whitney engines, it climbs a mile a minute, has a reported top speed of around 425 m.p.h., and can carry a bomb load of 4,000 lb. Being designed for use on carriers, the plane has folding wings.
PopularScience_19460201_0148_002_0096.xml
article
160
160
HOME MECHANICS & HANDICRAFT
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Colonial Corner Cupboard
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NORBERT ENGELS
DINING rooms done in the Colonial manner are hardly complete without a corner cupboard. This one, designed for use with popular early American furniture, is particularly appropriate. It should be made of some wood like pine, poplar, or butternut that will take a deep honey-color finish.
PopularScience_19460201_0148_002_0097.xml
article
161
161
HOME MECHANICS & HANDICRAFT
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Shadow Projector Affords New Kind of Imaginative Drawing
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O. FLUIIARTY
ENDLESS designs can be created by use of this projection-tracing device. An object, a lump of clay, or some paper squeezed into a loose ball is placed on the platform, the shadow being projected on a sheet of paper laid over the glass. The device will develop imagination and drawing skill in children.
PopularScience_19460201_0148_002_0098.xml
article
161
161
MECHANICS & SHOPCRAFT
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Sharpen Up Your Wits on This Crankshaft Puzzler!
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J. C. M.
This mechanical problem may fool even some gas-engine experts. When the crankpin in the drawing travels 90 deg. from position 1 to position 2, the piston pin travels from A to B, as indicated in Figs. 1 and 2. Then, when the crankpin travels 90 deg. from position 2 to position 3, the piston pin travels from B to C (Fig. 3).
PopularScience_19460201_0148_002_0099.xml
article
162
162,163,164,165
HOME MECHANICS & HANDICRAFT
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PICTURES FROM YOUR JIGSAW
Beautiful inlaid Veneers Challenge Your Artistic Sense and Your Skill as a Craftsman
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EDWIN M. LOVE
JIGSAW fans will find an inspiring outlet for their talent in inlay pictures. Assembled from cutouts of assorted veneers fitted together and glued to a backing to form a solid panel, they make striking wall decorations that seldom fail to command attention.
PopularScience_19460201_0148_002_0100.xml
article
166
166,167
HOME MECHANICS & HANDICRAFT
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NEW ART FROM OLD ROOTS
Artist Carves Figurines from Grotesque Growth of Juniper Bush
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LIKE the ugly duckling that changed to a swan, grotesquely twisted roots of the common juniper bush become figurines of surpassing beauty and form in the hands of an Alberta rancher turned sculptor. The artist who works these miracles is W. Garstang-Hodgson, whose unproductive range in the badlands near the little Canadian frontier town of Dorothy diverted him to wood carving.
PopularScience_19460201_0148_002_0101.xml
article
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168
CRAFTSMEN AT WORK
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CRAFTSMEN AT WORK
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SUNRISE GUN. This little cannon was used in place of an alarm clock to awaken movie actor James Cardwell while he was on location recently, according to his press agent. Focused by a magnifying glass, sunlight ignited a fuse, and the cannon went off.
PopularScience_19460201_0148_002_0102.xml
article
169
169
HOME MECHANICS & HANDICRAFT
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Home Vault Guards Valuables from Theft, Fire, and Dampness
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SAFE storage for valuables may be provided by casting wide mouth jars in a block of concrete and substituting this for a stone or building block in the basement wall. Screw-capped chemical bottles in the 5-lb. size are excellent for this purpose.
PopularScience_19460201_0148_002_0103.xml
article
169
169
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Black Lines Show Color as Benham Disk Revolves
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C. E. BENHAM started something when he discovered this optical effect back in the 1890’s. The disk at the right is ready for your scissors. Snip out the pattern, glue it on a piece of stiff cardboard, and mount it on a nail or pin so that you can spin it at a moderate speed, like a slow top.
PopularScience_19460201_0148_002_0104.xml
article
170
170,171
HOME MECHANICS & HANDICRAFT
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Drawing Desk for the Playroom
POPULAR SCIENCE MONTHLY SHOP DATA
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LECIL J. SLABACK
RIDING his hobby at a table and seat he can straddle like a play horse, a child will enjoy this combination from the time he first tries to use crayons. A unit-type desk and stool will please parents as well, for the streamlined design gives a free-flowing appearance in keeping with the modern nursery.
PopularScience_19460201_0148_002_0105.xml
article
172
172,173
PSM FEATURES
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HOME EXPERIMENTS SHOW MYSTERIOUS BEHAVIOR OF GASES
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GASES HAVE WEIGHT. In case you think they don’t, that they are a sort of ethereal nothingness, you can dispel the idea by making some carbon dioxide gas, pouring it out of a glass as you would water, and weighing it on a scale. A photographer’s scale, sensitive to a grain or so, will serve for the weighing.
PopularScience_19460201_0148_002_0106.xml
article
174
174,175,176,177
HOME MECHANICS & HANDICRAFT
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THUMBNAIL MODEL OF A VICTORY SHIP
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E. J. Mooney
MODELMAKERS with a flair for detail will find this little Victory ship an intriguing project. Scarcely larger than the palm of the hand, its scale is approximately 1/64" to 1'. All pieces making up the superstructure of the model may be cut or turned individually from brass, but if you must skimp on time it will be possible to substitute wood and heavy drawing paper.
PopularScience_19460201_0148_002_0107.xml
article
178
178
MECHANICS & SHOPCRAFT
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PALM-SIZE POWER PLANTS ARE THIS MAN'S HOBBY
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DESIGN engineer, builder, and operator of tiny gas engines that drive model boats and cars at full-scale speed, J. C. Magee, of Schenectady, N. Y., works at a fascinating hobby. The experimental racing car he is shown discussing in the photo above does 65 m.p.h. by actual test, circling around a pole on the end of a 24' steel cable 1/16" in diameter.
PopularScience_19460201_0148_002_0108.xml
article
179
179,180
MECHANICS & SHOPCRAFT
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NEW SHOP IDEAS
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C. W. WOODSON
A. R. PLAMBECK
J. C. M.
CARL F. BAREIS
NARROW GROOVES that cannot be measured directly with a micrometer may be gauged indirectly while being machined with this special tool. It is made by slotting a piece of tool steel, bending the two parts back, hardening, and grinding a cutting edge.
PopularScience_19460201_0148_002_0109.xml
article
181
181
PHOTOGRAPHY
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CAN YOU BEAT THESE PICTURES?
We will pay $5 for any photo used on this page. Write your name and address On each print. Enclose a stamped, selfaddressed envelope and the negative, if it is available, and send your contribution to the Curious Photos Editor.
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BOTH MOUTHS TOOK THE BAIT when Leo Adams, of Buffalo, N. Y., fished in the Niagara River. At any rate he landed this 6" perch. It has two distinct mouths. PHOTO CHARADE. Roger M. Johnston, of Glendale, Calif., sent in the puzzler below. What common expression does it represent? The answer appears upside down below.
PopularScience_19460201_0148_002_0110.xml
article
182
182,183
PHOTOGRAPHY
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PHOTO IDEAS
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KEN MURRAY
W. E. B.
H. N.
GEORGE SMITH
WASHING PRINTS can be expedited by making a series of small holes in a rubber hose, plugging one end with a wooden dowel, attaching the other to the faucet, and curling the hose on the bottom of a tray or tank. Water spurting from the holes will keep the prints in motion and separated.
PopularScience_19460201_0148_002_0111.xml
article
183
183
PHOTOGRAPHY
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NEW PHOTO EQUIPMENT
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CARRYING ITS OWN LIGHT, a new high-speed camera developed by the Signal Corps is so simple in operation that even an unskilled amateur can obtain good pictures of the fastest action, in color or black and white, either indoors or outdoors, at distances ranging from 6' to 12'.
PopularScience_19460201_0148_002_0112.xml
article
184
184,185,186
PSM FEATURES
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HOW SMALL BOATS CAN BATTLE ICE
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Elon Jessup
UNLESS you are a frostbite dinghy skipper and don’t mind risking an ice tussle for the sake of the sport, the best way to handle ice with a small craft is to leave it strictly alone. Thinly planked small boats were never built to compete with icebreakers, and there are few worse punishments that a boat can take.
PopularScience_19460201_0148_002_0113.xml
article
187
187
HOME MECHANICS & HANDICRAFT
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Holder Keeps Timer on Sunlamp
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A. C. WATSON
BECAUSE they were sold without holding devices, thousands of sunlamp timers suffer from a generally untidy appearance and a constant danger of falling. The holder shown below overcomes both hazards. It is made in three pieces of any hardwood.
PopularScience_19460201_0148_002_0114.xml
article
187
187
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Screwdriver Gets into Corners
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J. P. LEGER
WORKING in tight spots on radios, cars, and similar compact assemblies, I have found that a screw-holding screwdriver, used as shown above, is often helpful for holding nuts in places that fingers can’t reach. Adjust the spring-metal gripper to hold the nut firmly between the jaws and the screwdriver point.
PopularScience_19460201_0148_002_0115.xml
article
187
187
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Plier Handles Show Wire Sizes
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RONALD EYRICH
WIRE gauges are easily misplaced, but pliers have to be kept handy on any wiring job. One electrician solved his gauging problem by drilling five holes in the handle of his pliers. Diameters correspond to those of the more common wires; identifying numbers are etched with an electric pencil or scratched with a SCRIBER.
PopularScience_19460201_0148_002_0116.xml
article
187
187
RADIO & ELECTRICITY
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Bulb Lights with Base Exposed
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GEORGE BARR
THIS electrical display is bound to draw attention, not because of the amount of light it casts, but because the upended base seems to prove that it’s done without wires. Remove a screw base from a burned-out lamp by heating gently over a gas flame while pulling the metal with pliers.
PopularScience_19460201_0148_002_0117.xml
article
187
187
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Slotted Post Holds Adjustment
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H. W. HOLT
CRITICISM of homemade or simple commercial thermostats often centers around the fact that is difficult to lock a setting without upsetting the adjustment. A small brass post, slotted as shown in the drawing below, can be made to lock the adjusting screw exactly where you want it.
PopularScience_19460201_0148_002_0118.xml
article
188
188
RADIO & ELECTRICITY
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CURRENT QUIZ
Ten Questions Test Your Electrical Wits
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KNOW your coulombs and farads? Brush up on your electrical memory and plug away on these high-voltage teasers. Don’t be shocked if you miss some. With 10 right you’re 100 percent on the beam, 90 percent is still in phase, and 80 percent is a good power factor.
PopularScience_19460201_0148_002_0119.xml
article
188
188
RADIO & ELECTRICITY
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Blown Cartridge Fuse Provides Line Connection for Ammeter
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HAROLD P. STRAND
IN COMMERCIAL shops where ampere readings are required to test motor loads and the like, a blown cartridge fuse will permit cutting in an ammeter in series without opening joints or separating connections. Flexible leads are soldered to the fuse ferrules, and the fuse is substituted for one of the good ones in the fuse box, as shown in the drawing.
PopularScience_19460201_0148_002_0120.xml
article
189
189
RADIO & ELECTRICITY
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Signal in Doorbell Circuit Tells Caller You're In or Out
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BARNEY M. JENSEN
IF YOU worry about visitors leaving before you can answer the door, you still need not drop work and run every time the doorbell rings. A signal light built into a small box and connected in the bell circuit will notify them to wait when you are in or announce the fact that you have gone out.
PopularScience_19460201_0148_002_0121.xml
article
189
189
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Eraser Protects Wire Splice
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H. KLEIN
SLEEVES cut from pencil erasers of the type shown above will protect insulation tape over a spliced wire. Use one or more sleeves, working them onto one side of the wire before making the splice, and then work them over the tape.
PopularScience_19460201_0148_002_0122.xml
article
189
189
RADIO & ELECTRICITY
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Plunger-Type Switch Increases Capacity of Small Relay
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W. R.
THE current-handling capacity of a relay can be considerably increased by the method shown above. A short extension on the relay armature activates a standard plunger-type snap switch or microswitch. These switches are available in ratings up to 15 amp. at 115 volts.
PopularScience_19460201_0148_002_0123.xml
article
189
189
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Pocket Wire Stripper Fits on Key Ring
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DAVID B. CLAPP
FOR an efficient wire stripper, hacksaw a notch in a piece of ⅛" steel of the dimensions shown at right and file a bevel on one side. To strip stranded wire, drill a hole the wire size and cut the notch to it. A hole at the other end will permit attachment on the key ring.
PopularScience_19460201_0148_002_0124.xml
article
190
190,191
RADIO & ELECTRICITY
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PERSONAL RADIO
WITH A BEDSIDE MANNER
List of Parts
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[no value]
Albert W. Hellenthal
INSTEAD of thinking harsh thoughts about members of your family who frown on your radio listening when they want to read or sleep, try one of these compact personal radios that make the entertainment of the airwaves your private business. This set can practically be built out of the spare-parts box, for with the exception of the resistance in series with the heaters, none of the specified values is critical.
PopularScience_19460201_0148_002_0125.xml
article
192
192
RADIO & ELECTRICITY
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News in Electronics
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PARA TALKIE, younger brother of the walkie and handie, was developed by the Michigan Wing of the Civil Air Patrol to enable instructors to speak to students on the way down. Microphone and headphones are built into the chutist’s helmet, and the antenna, a length of flat braid, is worn on his trouser leg.
PopularScience_19460201_0148_002_0126.xml
article
193
193
RADIO & ELECTRICITY
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Repair Stand for Record Players
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SERVICING a record player or automatic changer outside of its cabinet is usually made difficult by the uneven base of the motor. The stand shown above holds the player in correct operating position, and keeps moving parts clear of the workbench. Any size stock will serve so long as the legs are braced to stand upright.
PopularScience_19460201_0148_002_0127.xml
article
193
193
RADIO & ELECTRICITY
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Safety Ground Reduces Danger from High-Voltage Equipment
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G. S.
IN USING high-voltage apparatus around the house, the danger of electric shock may be practically eliminated through the use of a three-wire cord with external ground. Connect one of the wires to the chassis and clip its other end to a wall plate or grounded fixture.
PopularScience_19460201_0148_002_0128.xml
article
193
193
RADIO & ELECTRICITY
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Installing Small Capacitors
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G. S.
LARGE fuse clips can be used to hold small capacitors or other radio components in place as shown. To insulate the condenser, wrap a few turns of cellulose tape around it before slipping it into the clip on the radio chassis.
PopularScience_19460201_0148_002_0129.xml
article
193
193
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Servicing Hints Wanted
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IDEAS that have paid off in your radio work or play can pay off again on these pages. Do you have any short cuts, tips, kinks, hints, or ideas that other experimenters and servicemen can use? POPULAR SCIENCE MONTHLY will pay for all ideas published.
PopularScience_19460201_0148_002_0130.xml
article
194
194
MECHANICS & SHOPCRAFT
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GI Ingenuity and Nazi Junk Pooled in Field Sandblast
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RICHARD M. RIEBLING
MY BOSS, Lt. Russell H. Howard, of Madison, Wis., and I were leafing through POPULAR SCIENCE when it occurred to us that readers might be interested in our improvised field sandblast. The air compressor was borrowed from battalion headquarters, the wire-bound fire hose and nozzle were salvaged from an inactive fire station, and the oil drum and pipe fixtures were liberated from German military installations.
PopularScience_19460201_0148_002_0131.xml
article
194
194
HOME MECHANICS & HANDICRAFT
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Gauge for Hacksaw-Blade Teeth
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WILL THOMAS
UNLESS you are experienced enough to tell the number of teeth on a hacksaw blade at a glance, a gauge like that shown below will save you time. It is made from the ends of four broken hacksaw blades—one each of 14, 18, 24, and 32 teeth.
PopularScience_19460201_0148_002_0132.xml
article
194
194
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[no value]
Sheet-Metal Screw Plugs Tank Leak
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[no value]
H. P. S.
EMERGENCY repairs to a leaking fuel-oil or water tank can be made quickly with a sheetmetal screw and a washer cut from roofing sheet lead. The coarsethreaded screw can be driven in even while the liquid is leaking and will hold the soft lead against the tank.
PopularScience_19460201_0148_002_0133.xml
article
194
194
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HERE'S THE ANSWER TO YOUR CRANKSHAFT PUZZLER
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No, the piston pin in the problem on page 161 does not travel the same distance for both 90-deg. movements of the crankpin. Distance A-B is less than B-C. The crankpin travels in a circle while the piston pin travels in a straight line, and therefore, when the crankpin is at 2, the con. rod is at an angle from the vertical line of travel of the piston pin.
PopularScience_19460201_0148_002_0134.xml
article
195
195
For Easier Farming
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For Easier Farming
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TOMATO-RED POLISH not only looks nice on women’s nails, but Prof. Roscoe Fraser, below, of Purdue University, has put it to a practical farming use. Now, when inexperienced young women are hired to pick tomatoes in the fields of southern Illinois and Indiana, they are no longer apt to mix No. 1 and No. 2 grades.
PopularScience_19460201_0148_002_0135.xml
article
196
196,197,198,199
PSM FEATURES
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ELECTROLYSIS...
Working Together, Electricity and Chemistry Perform Many Industrial Chores. These Experiments Show How They Do It
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KENNETH M. SWEZEY
BY SENDING an electric current through certain melted salts or conducting solutions, the modern chemist performs an almost endless variety of industrial chores. He extracts metals from their ores, plates expensive and hard metals on baser or softer metals, and produces vast quantities of such important compounds and elements as aluminum, magnesium, sodium, chlorine, hydrogen, and sodium hydroxide.
PopularScience_19460201_0148_002_0136.xml
article
200
200,201
KEEPING THE HOME SHIPSHAPE
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KEEPING THE HOME SHIPSHAPE
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Warm ski mittens can be stitched up from pieces cut from an old fleece-lined coat that is ready for the discard. The fleece is, of course, used inside, and the stitches are put on the outside. Screwed to the inside of a sewing-machine drawer, as indicated below, the notched member of a pair of window-shade brackets becomes a handy thread or string cutter.
PopularScience_19460201_0148_002_0137.xml
article
202
202
HOME MECHANICS & HANDICRAFT
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Two Hints That Will Help Keep a Flag Proudly Flying
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OLD GLORY always should be flown in a way that it will present the best possible appearance. Two ideas that will help achieve that end are illustrated at the left. Observing that the wind frequently whips a flag at half mast with enough force to break the halyard, John E. Glover, Jr., designed a brass-ring support to keep it firmly against the pole.
PopularScience_19460201_0148_002_0138.xml
article
202
202
HOME MECHANICS & HANDICRAFT
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Rubber Vacuum Cup Keeps End of Long Chalk Line in Place
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JOE B. HICKS
WHILE I was laying off chalk lines on steel plates, the thought occurred to me that a rubber vacuum cup on one end of the cord would be a big help. As shown here, the idea was a success. The cup supports as much as 25' of LINE.
PopularScience_19460201_0148_002_0139.xml
article
202
202
RADIO & ELECTRICITY
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Thermostat Rings Alarm Bell When Furnace Draft Is Left Open
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W. C. IRVING
BY REVERSING the action of a mercury thermostat and hooking it up with a transformer and doorbell, I now receive warning when it’s time to close the furnace draft to keep the house from getting too warm. The system was rigged up after an old blower was removed, leaving the thermostat with nothing to do.
PopularScience_19460201_0148_002_0140.xml
article
203
203
HOME MECHANICS & HANDICRAFT
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MARBLE DODGING RACE CALLS FOR A QUICK EYE
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[no value]
Myron Fleishman
ORDINARILY the first contestant across the finish line wins a race. In this marble game, however, that rule has been thrown into the discard, and the first marble to finish wins absolutely nothing. Moreover, by the rules of the game, the lone marble bars all the others from further competition.
PopularScience_19460201_0148_002_0141.xml
article
203
203
HOME MECHANICS & HANDICRAFT
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Control Wins in Tantalizing Bowling Game
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GUTHRIE B. STONE
BOWLERS will have to employ all their skill to win a point in the game illustrated here. It is played by standing about 8’ away and throwing the ball so that it rolls up the inclined board from the floor. A point is won by dropping the ball through the slot at the top of the board.
PopularScience_19460201_0148_002_0142.xml
article
204
204
TABLE TRICKS
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TABLE TRICKS
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TWO ON A MATCH is no stunt, but simultaneously lighting two cigarettes 5' apart with one paper match takes some knowhow. Secretly split the end first. Strike the match, let it burn a moment, and pull the split end apart to make two burning matches.
PopularScience_19460201_0148_002_0143.xml
article
205
205
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Belling the Cat Takes New Turn
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UNLESS you can teach your cat new tricks, this idea is likely to prove a dud. It was a success, however, in the case of August J. Goran, of Williamsville, N. Y. His cat swats the bell as a signal that it’s tired of wandering and wants to enter the house.
PopularScience_19460201_0148_002_0144.xml
article
205
205
HOME MECHANICS & HANDICRAFT
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Double-Boiler Glue Pot Built from a Pair of Tin Cans
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JOSEPH F. BAZATA
NEEDING a quantity of hot animal glue, I made a double-boiler type of glue pot from two cans of different sizes. Hot water in the outer can keeps the glue hot sufficiently long so that a gluing job can be done almost anywhere in the shop or home. A 1-lb. coffee can was used outside, and a small soup can was soldered to a hole cut in the cover of the first.
PopularScience_19460201_0148_002_0145.xml
article
205
205
HOME MECHANICS & HANDICRAFT
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Router Improvised from Drill Leaves a Smooth Surface
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H. R. P.
WHEN you need a router bit in a hurry, you can press an old drill into service with good results. First, grind the tip to an ordinary router shape. Then, and this is the secret of a smooth surface, put it in the drill press, exert light pressure, and work it at medium speed over a sharpening stone until a very small flat is produced on the.lips. In use, chuck the router as short as possible to lessen side spring.
PopularScience_19460201_0148_002_0146.xml
article
205
205
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Spring Steel Used for Scrapers
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G. S. GADDA
WOODWORKERS who need scraper blades of various shapes for use on carvings and other intricate work may make their own from scraps of spring steel. After grinding the steel to the desired shape, sharpen it to a razor edge on a fine stone, being careful to keep the bevel on one side only.
PopularScience_19460201_0148_002_0147.xml
article
206
206
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Auto Trailer Carries Heaviest Load in Full Safety at High Speed
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E. M. L.
STURDILY built, this auto trailer tracks smoothly with heavy loads even at speeds in excess of 60 m.p.h., stability being assured in large measure by the method of wheel and spring mounting that was employed. The frame consists mostly of angle iron.
PopularScience_19460201_0148_002_0148.xml
article
207
207
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Angles on Clamp Line Up Corners
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G. S.
Two short lengths of 1" angle iron brazed to a C-clamp, as shown at left, provide a means for clamping right-angle joints. Mitered wood corners can thus be clamped for gluing, butt joints can be held in alignment for nailing, and metal corners can be supported for riveting or welding.
PopularScience_19460201_0148_002_0149.xml
article
207
207
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Tool Bores Cored Hole to Size
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U. G. D.
SHOP owners doing production work will find the tool shown above very useful for precision boring of cored holes in castings. The body may be made of cold-rolled steel and casehardened. An expansion slot and a screw permit adjustment for wear and sharpening of the carbide tip, which is brazed on in the usual way.
PopularScience_19460201_0148_002_0150.xml
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209
209
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HASTINGS MANUFACTURING COMPANY: HASTINGS STEEL-VENT PISTON RINGS
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HASTINGS MANUFACTURING COMPANY
HASTINGS STEEL-VENT PISTON RINGS
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[no value]
PopularScience_19460201_0148_002_0151.xml
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210
210
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NICHOLSON FILE CO.
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NICHOLSON FILE CO.
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PopularScience_19460201_0148_002_0152.xml
article
210
210
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Dancing, Movies Possible In Forthcoming Pullmans
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YOU’LL be able to dance, or see a movie show, or enjoy many an unusual comfort on the new railroad cars that are scheduled for delivery soon. Designed by PullmanStandard, they have such unfamiliar names as “living-room car,” “Junior Club car,” and “club-cinema car.
PopularScience_19460201_0148_002_0153.xml
article
210
210
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Invisible Rays Guard Milk Cans
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A NEW U-shape ultraviolet lamp that in one minute kills 96 out of 100 bacteria in washed milk cans has been developed by the Westinghouse Lamp Division Research Laboratories. The 30-inch-long lamp fits into any conventional-size dairy utensil, spraying invisible ultraviolet rays to all exposed areas.
PopularScience_19460201_0148_002_0154.xml
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210
210
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SPARK PLUG COMPANY
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SPARK PLUG COMPANY
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PopularScience_19460201_0148_002_0155.xml
advertisement
211
211
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Champion Spark Plug Company: Spark Plugs
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Champion Spark Plug Company
Spark Plugs
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[no value]
PopularScience_19460201_0148_002_0156.xml
advertisement
212
212
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N. A. Woodworth Co.
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N. A. Woodworth Co.
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[no value]
PopularScience_19460201_0148_002_0157.xml
advertisement
213
213
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Atlas Press Company
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Atlas Press Company
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PopularScience_19460201_0148_002_0158.xml
advertisement
214
214
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PLASTIC WOOD
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PLASTIC WOOD
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PopularScience_19460201_0148_002_0159.xml
article
214
214
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Dowels on Bolts Clamp Violin
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RICHARD P. MILBURN
STANDARD ¼"" carriage bolts and wing nuts used with hardwood-dowel jaws drilled for a sliding fit make clamps for holding violin bellies and backs in place. A leather facing glued to each jaw will prevent marring of the VARNISH.
PopularScience_19460201_0148_002_0160.xml
article
214
214
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Shoe Rack Inside Closet Door Has Drawer for Shine Kit
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E. W.
MATERIALS for keeping your shoes shined will be near the shoes in the drawer of this closet-door rack. The top of the piece slants down toward the front, and a wood strip near the back holds the heels of the shoes. Screw the piece to the inside of the door through the frame support at the back before nailing on the top.
PopularScience_19460201_0148_002_0161.xml
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215
215
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Casco Products Corp.
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Casco Products Corp.
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PopularScience_19460201_0148_002_0162.xml
advertisement
216
216
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X-acto Crescent Products Co.
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X-acto Crescent Products Co.
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PopularScience_19460201_0148_002_0163.xml
article
216
216
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ONLY X-ACTO KNIVES HAVE ALL THESE IMPORTANT ADVANTAGES
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10 BLADE SHAPES, interchangeable. All of scalpel-sharp surgical steel. A blade for every type of cutting job. 3 HANDLE STYLES, of solid duraluminum construction. Designed for safety, firm grip, precise control. INGENIOUS COLLET DEVICE locks in blades securely, so they can’t fold under on curves or heavy cuts.
PopularScience_19460201_0148_002_0164.xml
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217
217
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THE ELECTRIC STORAGE BATTERY COMPANY: Exide Batteries
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THE ELECTRIC STORAGE BATTERY COMPANY
Exide Batteries
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PopularScience_19460201_0148_002_0165.xml
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218
218
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LINK AVIATION DEVICES, Inc.
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LINK AVIATION DEVICES, Inc.
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PopularScience_19460201_0148_002_0166.xml
article
218
218
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Scratch Gauge Made in Few Minutes
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W. H. M.
THIS scratch gauge and edge scriber was produced by drilling a 3/16" hole and cutting a slot in a hardwood block, and then inserting the bolt and marking it where it passes through the slot. A hole for the wire was drilled in the bolt at that point.
PopularScience_19460201_0148_002_0167.xml
article
218
218
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Square-Cut Nail Serves as Punch
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FRED W. CARTER
WITH the end filed off perfectly square, a wire nail serves as an excellent substitute for a leather punch. Select a nail the size of the hole desired and drive it through the leather into the end grain of a block of soft wood. The idea also will work on many other materials, including light metals.
PopularScience_19460201_0148_002_0168.xml
article
218
218
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Screw Eye Countersunk in File Handle
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R. G.
HAVING a handled file that was too long for my toolbox, I wanted a simple way of hanging it from a nail. A hook in the end would do the trick, of course, but would also get in the way of my hand when I use the file. My solution of the problem was to countersink a small screw eye in the end of the handle and loop a piece of string through it.
PopularScience_19460201_0148_002_0169.xml
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219
219
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SNAP-ON TOOLS CORPORATION
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SNAP-ON TOOLS CORPORATION
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PopularScience_19460201_0148_002_0170.xml
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220
220
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Advertisement: MERCURY II
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MERCURY II
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PopularScience_19460201_0148_002_0171.xml
advertisement
221
221
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AERONCA AIRCRAFT CORPORATION
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AERONCA AIRCRAFT CORPORATION
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[no value]
PopularScience_19460201_0148_002_0172.xml
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222
222
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MASTER RULE MFG. CO., INC.
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MASTER RULE MFG. CO., INC.
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PopularScience_19460201_0148_002_0173.xml
article
222
222
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Jig Holds Shiplap for Nailing
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R. H. LUND
A JIG for holding one end of shiplap while you nail the other can be made by driving a 4" spike through a two-by-four block and bending it to form a hook. Hang the jig over the last siding on the wall, and then take the next shiplap at the center and slide it between the jig and the studs.
PopularScience_19460201_0148_002_0174.xml
article
222
222
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Filing Kink for Machine Screws
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W. M.
HEADS of machine screws may be filed without damage to the threads if two nuts are locked together on the threaded part and held in a vise. The jaws will then clamp the locked nuts instead of exerting pressure on the threads and marring them.
PopularScience_19460201_0148_002_0175.xml
article
222
222
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Strap Hinge Cuts Shingle Nails
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FRANCIS MANLEY
WHEN shingle nails interfere with the insertion of a new valley under the edge of roofing, they can be cut off with a long, sharpened strap hinge. A notch cut in the side of the hinge and then ground to an edge, as indicated in the drawing below, will catch nails that are missed when the hinge is driven In.
PopularScience_19460201_0148_002_0176.xml
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223
223
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Gillette Safety Razor Company: Gillette
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Gillette Safety Razor Company
Gillette
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PopularScience_19460201_0148_002_0177.xml
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224
224
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HARLEY-DAVIDSON MOTOR COMPANY
[no value]
HARLEY-DAVIDSON MOTOR COMPANY
[no value]
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[no value]
PopularScience_19460201_0148_002_0178.xml
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225
225
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EVINRUDE MOTORS: OUTBOARD MOTORS
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EVINRUDE MOTORS
OUTBOARD MOTORS
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PopularScience_19460201_0148_002_0179.xml
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226
226
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Advertisements
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PopularScience_19460201_0148_002_0180.xml
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227
227
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EDMUND SALVAGE COMPANY
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EDMUND SALVAGE COMPANY
[no value]
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PopularScience_19460201_0148_002_0181.xml
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228
228
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ZENITH RADIO CORPORATION
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ZENITH RADIO CORPORATION
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[no value]
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PopularScience_19460201_0148_002_0182.xml
article
228
228
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Staples Used in Framing Pictures
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H. KLEIN
SMALL staples such as those shown in the photo above are excellent for use in framing pictures. Bend them slightly apart with pliers so that the ends can be hammered into the frame across the corners in the manner INDICATED.
PopularScience_19460201_0148_002_0183.xml
article
228
228
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Eraser Keeps Cane from Slipping
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C. V. G.
THOSE accustomed to carrying a cane will realize how embarrassing it sometimes can be to have the cane clatter to the floor when it has been hooked over a table or desk. This nuisance can be eliminated by gluing a pencil eraser in a small hole drilled in the handle end of the cane.
PopularScience_19460201_0148_002_0184.xml
article
228
228
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Abrasive Wheel from Basket Bottom
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A. G.
CENTERED on a polishing-head shaft, the bottom of a peach basket provides a base for an efficient abrasive wheel. Since the washer on the shaft is all that is needed to hold a sheet of sandpaper or emery cloth against the wheel, the type of abrasive can be changed as often as required.
PopularScience_19460201_0148_002_0185.xml
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229
229
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FORD MOTOR COMPANY
[no value]
FORD MOTOR COMPANY
[no value]
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[no value]
PopularScience_19460201_0148_002_0186.xml
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230
230
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Advertisements
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[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0187.xml
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231
231
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0188.xml
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232
232
[no value]
[no value]
Croton Watch Co.
[no value]
Croton Watch Co.
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0189.xml
article
232
232
[no value]
[no value]
Accessories Make Light Truck Suitable for Many New Uses
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ADAPTED from a four-wheel-drive vehicle produced for the Army during the war, a new one-ton, 94-hp. Dodge truck was engineered not only for general hauling but as a source of power for many farm and industrial operations. A control lever in the cab disengages the front-wheel drive for economy on improved highways.
PopularScience_19460201_0148_002_0190.xml
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233
233
[no value]
[no value]
TEXACO DEALERS
[no value]
TEXACO DEALERS
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0191.xml
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234
234
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0192.xml
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235
235
[no value]
[no value]
OTTAWA MANUFACTURING COMPANY
[no value]
OTTAWA MANUFACTURING COMPANY
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0193.xml
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235
235
[no value]
[no value]
THE FATE-ROOT-HEATH CO.
[no value]
THE FATE-ROOT-HEATH CO.
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0194.xml
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236
236
[no value]
[no value]
SMOOTH-ON MFC. CO.
[no value]
SMOOTH-ON MFC. CO.
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0195.xml
article
236
236
[no value]
[no value]
Smallest Diesel Engine Is Air-Cooled As Well
[no value]
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[no value]
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THE smallest Diesel engine ever built for commercial use, and the only stationary Diesel that is air-cooled, is being produced by the R. H. Sheppard Company, of Hanover, Pa. It is 28 ½ inches high, 20¾ inches wide, 22½ inches long with the crank removed, and has a fuel tank that holds 9/10 of a gallon.
PopularScience_19460201_0148_002_0196.xml
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237
237
[no value]
[no value]
THE DELTA MANUFACTURING CO.: Ball Bearings
[no value]
THE DELTA MANUFACTURING CO.
Ball Bearings
[no value]
[no value]
PopularScience_19460201_0148_002_0197.xml
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238
238
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0198.xml
advertisement
239
239
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0199.xml
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240
240
[no value]
[no value]
GREENLEE TOOL COMPANY
[no value]
GREENLEE TOOL COMPANY
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0200.xml
article
240
240
[no value]
[no value]
Outstanding Inventions Of 1945's Sparse Crop
[no value]
[no value]
[no value]
[no value]
ALTHOUGH only about 500 patents a week were issued during 1945, a low average consistent with the previous war years, some outstanding inventions were patented. Here are a few of them: Antiknock motor fuels, produced through the addition of compounds of heavy metals other than lead.
PopularScience_19460201_0148_002_0201.xml
article
240
240
[no value]
[no value]
Comet Finder Du Toit Discovers Third One in a Year
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A HITHERTO undiscovered comet of the seventh magnitude has been found by D. du Toit in the vicinity of the Southern Cross. Du Toit, who is a member of the Harvard Observatory Staff at Bloemfontein, South Africa, is credited with finding two faint comets earlier in 1945.
PopularScience_19460201_0148_002_0202.xml
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241
241
[no value]
[no value]
Continental Motors Corporation
[no value]
Continental Motors Corporation
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0203.xml
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242
242
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0204.xml
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243
243
[no value]
[no value]
VANROY CO. INC.
[no value]
VANROY CO. INC.
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0205.xml
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243
243
[no value]
[no value]
JOHNSON MOTORS
[no value]
JOHNSON MOTORS
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0206.xml
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244
244
[no value]
[no value]
HARRY A. LOWTHER COMPANY
[no value]
HARRY A. LOWTHER COMPANY
[no value]
[no value]
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PopularScience_19460201_0148_002_0207.xml
article
244
244
[no value]
[no value]
Geologists Had Answers To Military Questions
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WHEN Nazi camoufleurs had hidden the famous Ploesti oil center in Rumania so thoroughly that our bombers couldn’t find it, American geologists put the finger on that primary strategic target by making a new kind of map called a terrain diagram.
PopularScience_19460201_0148_002_0208.xml
article
244
244
[no value]
[no value]
Brighter, Clearer Images Seen in Television Show
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A NEW cathode-ray tube for television sets, providing a much brighter and clearer image than any prewar model, has been developed by engineers of the Radio Corporation of America. The tube was recently demonstrated at a television show in which images in color and apparently in three dimensions were also projected on a screen.
PopularScience_19460201_0148_002_0209.xml
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245
245
[no value]
[no value]
POWER KING TOOL CORPORATION
[no value]
POWER KING TOOL CORPORATION
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0210.xml
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246
246
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0211.xml
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247
247
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0212.xml
article
248
248
[no value]
[no value]
Grueling Three-Day Tests Screened Secret Agents
[no value]
[no value]
[no value]
[no value]
MEN who were courageous, resourceful, and strong enough to be sent into enemy territory on hazardous undercover missions for the Office of Strategic Services during World War II were chosen in grueling threeday tests. Candidates for supersecret assignments were subjected to Nazi-style cross-examination under blinding lights, had to run a difficult obstacle course, were given novel intelligence tests, were allowed to drink hard liquor and then questioned under its influence to see if their loosened tongues wagged too freely.
PopularScience_19460201_0148_002_0213.xml
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248
248
[no value]
[no value]
MILWAUKEE DUSTLESS BRUSH COMPANY
[no value]
MILWAUKEE DUSTLESS BRUSH COMPANY
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0214.xml
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249
249
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0215.xml
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250
250
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0216.xml
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251
251
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0217.xml
article
252
252
[no value]
[no value]
Cobweb-Thin Wire Makes Human Hair Look Coarse
[no value]
[no value]
[no value]
[no value]
No LARGER than a wisp of cobweb, a length of insulated Formex wire is twisted around two human hairs (right), magnified 80 times. Used by General Electric in instruments for measuring electronic circuits, a pound of it would stretch 62 miles.
PopularScience_19460201_0148_002_0218.xml
article
252
252
[no value]
[no value]
Trailer is Easily Converted into Permanent Home
[no value]
[no value]
[no value]
[no value]
COMPLETELY equipped with comforts for ordinary living, this cottage may be carried as a trailer or taken off its wheels and set up as a permanent dwelling.
PopularScience_19460201_0148_002_0219.xml
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253
253
[no value]
[no value]
Watch Company of America, Inc.: WATCHES
[no value]
Watch Company of America, Inc.
WATCHES
[no value]
[no value]
PopularScience_19460201_0148_002_0220.xml
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253
253
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0221.xml
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254
254
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0222.xml
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255
255
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0223.xml
article
256
256
[no value]
[no value]
MANY-PURPOSE LIGHT TRAVELS BY TRUCK
[no value]
[no value]
[no value]
[no value]
A PORTABLE, mobile, rotating beacon is being manufactured by the Davy Compressor Co., Kent, Ohio, for the U. S. Coast Guard. Designed especially as an aid to marine and air navigation, the light has a 24-inch face equipped with various snap-on lenses, shutters, and mountings that adapt it to use as an airport beacon, searchlight, floodlight, temporary lighthouse, or signal.
PopularScience_19460201_0148_002_0224.xml
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257
257
[no value]
[no value]
LAMONT
[no value]
LAMONT
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0225.xml
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257
257
[no value]
[no value]
SWAIN NELSON CO.
[no value]
SWAIN NELSON CO.
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0226.xml
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257
257
[no value]
[no value]
FISHER BODY CRAFTSMAN’S GUILD
[no value]
FISHER BODY CRAFTSMAN’S GUILD
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0227.xml
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258
258
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0228.xml
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259
259
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0229.xml
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260
260
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0230.xml
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261
261
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0231.xml
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262
262
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0232.xml
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263
263
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0233.xml
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264
264
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0234.xml
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265
265
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0235.xml
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266
266
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0236.xml
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267
267
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0237.xml
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268
268
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0238.xml
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269
269
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0239.xml
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270
270
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0240.xml
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271
271
[no value]
[no value]
HENRY LEONARD & THOMAS, Inc.: Royalton Crown
[no value]
HENRY LEONARD & THOMAS, Inc.
Royalton Crown
[no value]
[no value]
PopularScience_19460201_0148_002_0241.xml
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271
271
[no value]
[no value]
GLOBE PRODUCTS MFG. CO.
[no value]
GLOBE PRODUCTS MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0242.xml
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272
272
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0243.xml
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273
273
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0244.xml
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274
274
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0245.xml
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275
275
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0246.xml
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276
276,277
[no value]
[no value]
Advertisement: POPULAR SCIENCE
[no value]
[no value]
POPULAR SCIENCE
[no value]
[no value]
PopularScience_19460201_0148_002_0247.xml
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278
278
[no value]
[no value]
CALCULATOR MACHINE CO.
[no value]
CALCULATOR MACHINE CO.
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0248.xml
advertisement
278
278
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0249.xml
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279
279
[no value]
[no value]
DREMEL MFG. CO.
[no value]
DREMEL MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0250.xml
advertisement
279
279
[no value]
[no value]
UNITED STATES PLYWOOD CORPORATION: Weldwood Glue
[no value]
UNITED STATES PLYWOOD CORPORATION
Weldwood Glue
[no value]
[no value]
PopularScience_19460201_0148_002_0251.xml
advertisement
280
280
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0252.xml
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281
281
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0253.xml
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282
282
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0254.xml
advertisement
283
283
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0255.xml
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284
284
[no value]
[no value]
FOREMOST BOOKS
[no value]
FOREMOST BOOKS
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0256.xml
advertisement
285
285
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0257.xml
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285
285
[no value]
[no value]
THE MAYAN ORDER
[no value]
THE MAYAN ORDER
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0258.xml
advertisement
286
286
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0259.xml
advertisement
287
287
[no value]
[no value]
U.S.EYE-GLASSES CO.
[no value]
U.S.EYE-GLASSES CO.
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0260.xml
advertisement
287
287
[no value]
[no value]
FIT-RITE COMPANY,
[no value]
FIT-RITE COMPANY,
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0261.xml
advertisement
287
287
[no value]
[no value]
LEJAY MFG.CO
[no value]
LEJAY MFG.CO
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0262.xml
advertisement
288
288
[no value]
[no value]
SOUTH BEND LATHE WORKS
[no value]
SOUTH BEND LATHE WORKS
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0263.xml
advertisement
289
289
[no value]
[no value]
Advertisement
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0264.xml
advertisement
290
290
[no value]
[no value]
R. J. Reyno'ds Tob.Co.
[no value]
R. J. Reynolds Tob. Co.
[no value]
[no value]
[no value]
PopularScience_19460201_0148_002_0265.xml