Issue: 19410301

Saturday, March 1, 1941
MAR. 1941
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Monday, December 29, 2014

Articles
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POPULAR SCIENCE
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PopularScience_19410301_0138_003_0001.xml
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BELL TELEPHONE SYSTEM
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BELL TELEPHONE SYSTEM
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PopularScience_19410301_0138_003_0002.xml
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1
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Chrysler Corporation
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Chrysler Corporation
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PopularScience_19410301_0138_003_0003.xml
tableOfContents
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2,4,6
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CONTENTS for MARCH, 1941
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masthead
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2,4
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POPULAR SCIENCE
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PopularScience_19410301_0138_003_0005.xml
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3
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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PopularScience_19410301_0138_003_0006.xml
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5
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GENERAL MOTORS ACCEPTANCE CORPORATION
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GENERAL MOTORS ACCEPTANCE CORPORATION
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PopularScience_19410301_0138_003_0007.xml
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6
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R. M. Hollingshead Corp.
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R. M. Hollingshead Corp.
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PopularScience_19410301_0138_003_0008.xml
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7
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GENERAL MOTORS
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GENERAL MOTORS
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PopularScience_19410301_0138_003_0009.xml
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8
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LASALLE EXTENSION UNIVERSITY
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LASALLE EXTENSION UNIVERSITY
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PopularScience_19410301_0138_003_0010.xml
article
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Coming Next Month —
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“KILL THE BABY!” That’s one of the orders frequently heard on the Hollywood sound stages, but there’s no infanticide involved. It’s just the camera man’s way of saying that he wants a small spotlight cut out. To add some other odd phrases to your vocabulary, read “Slang Rules the Movies.”
PopularScience_19410301_0138_003_0011.xml
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GENERAL ELECTRIC
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GENERAL ELECTRIC
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PopularScience_19410301_0138_003_0012.xml
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10
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Advertisement
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PopularScience_19410301_0138_003_0013.xml
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J. E. SMITH
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J. E. SMITH
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PopularScience_19410301_0138_003_0014.xml
article
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12,14
Readers Say:
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Readers Say:
He'd Never Thought of Building a Boat—But Look at It!
How's This for a Secret Weapon? —Hollywood's 6,000-Shooter
If You Don't Believe It, Try It Yourself
The Other Side of the Question of War-Machine Articles
It Must Have Been Handy on Moving Day
R.T.S. Didn't Realize the Gravity of the Situation
A Warning on Reproducing U.S. Postage Stamps
His Daddy Got the Idea from Reading P.S.M.
George Ellery Hale's Teacher in Machine Design
They Just Put on Their Ties To Have Their Pictures Taken
A Stitch in Time Removed the Ring
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THIS past spring, I was taken with an insane desire to build a boat. Browsing through stacks of magazines, I stumbled onto the plans for a 13-foot stepless hydroplane planked hull in P.S.M. for July 1935. I had never even thought of building a boat before.
PopularScience_19410301_0138_003_0015.xml
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13
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LASALLE EXTENSION UNIVERSITY
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LASALLE EXTENSION UNIVERSITY
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PopularScience_19410301_0138_003_0016.xml
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15
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CLARENCE A. O'BRIEN
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CLARENCE A. O'BRIEN
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PopularScience_19410301_0138_003_0017.xml
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16
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Advertisements
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PopularScience_19410301_0138_003_0018.xml
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17
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HARLEY-DAVIDSON MOTOR CO.
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HARLEY-DAVIDSON MOTOR CO.
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PopularScience_19410301_0138_003_0019.xml
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18
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Advertisements
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PopularScience_19410301_0138_003_0020.xml
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19
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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INTERNATIONAL CORRESPONDENCE SCHOOLS
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PopularScience_19410301_0138_003_0021.xml
article
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With the Inventors
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With the Inventors
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SKATES with rollers set in a blade shaped like that of an ice skate, to give greater speed and maneuverability, have been invented by Armand User, of Paris, France. For executing toe-stands and other difficult figures of fancy skating, the skates have a small disk fixed in the toe of each.
PopularScience_19410301_0138_003_0022.xml
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VICTOR J. EVANS & CO.
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VICTOR J. EVANS & CO.
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PopularScience_19410301_0138_003_0023.xml
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22
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Advertisement
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PopularScience_19410301_0138_003_0024.xml
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22
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Advertisement
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PopularScience_19410301_0138_003_0025.xml
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22
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McGRAW-HILL BOOK CO.
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McGRAW-HILL BOOK CO.
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PopularScience_19410301_0138_003_0026.xml
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23
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McMORROW & BERMAN
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McMORROW & BERMAN
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PopularScience_19410301_0138_003_0027.xml
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24
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D. Van Nostrand Co., Inc.
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D. Van Nostrand Co., Inc.
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PopularScience_19410301_0138_003_0028.xml
article
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New Devices for the Home
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LUMINOUS WALLS that transmit sunlight by day and give off a diffused illumination of their own at night can be built with hollow glass bricks filled with a flourescent gas, the invention of Edward B. Baker, of Detroit, Mich. Each brick becomes in effect a separate lamp when an electric current is passed through wires embedded in the bricks.
PopularScience_19410301_0138_003_0029.xml
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HOMASOTE COMPANY
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HOMASOTE COMPANY
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PopularScience_19410301_0138_003_0030.xml
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PLASTICS INDUSTRIES TECHNICAL INSTITUTE
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PLASTICS INDUSTRIES TECHNICAL INSTITUTE
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PopularScience_19410301_0138_003_0031.xml
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Advertisements
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PopularScience_19410301_0138_003_0032.xml
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Advertisements
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PopularScience_19410301_0138_003_0033.xml
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PopularScience_19410301_0138_003_0034.xml
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PopularScience_19410301_0138_003_0035.xml
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PopularScience_19410301_0138_003_0036.xml
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PopularScience_19410301_0138_003_0037.xml
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PopularScience_19410301_0138_003_0038.xml
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PopularScience_19410301_0138_003_0039.xml
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PopularScience_19410301_0138_003_0040.xml
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PopularScience_19410301_0138_003_0041.xml
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36,39,40,37,38,41,42,43,44
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POPULAR SCIENCE Classified OPPORTUNITIES
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PopularScience_19410301_0138_003_0042.xml
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THE FATE-ROOT-HEATH CO.
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THE FATE-ROOT-HEATH CO.
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PopularScience_19410301_0138_003_0043.xml
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McKinley-Roosevelt Graduate College
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McKinley-Roosevelt Graduate College
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PopularScience_19410301_0138_003_0044.xml
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45
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INTERNATIONAL TYPEWRITER EXCHANGE
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INTERNATIONAL TYPEWRITER EXCHANGE
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PopularScience_19410301_0138_003_0045.xml
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CRAFTSMAN WOOD SERVICE CO.
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CRAFTSMAN WOOD SERVICE CO.
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PopularScience_19410301_0138_003_0046.xml
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PopularScience_19410301_0138_003_0047.xml
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VON SCHRADER MFG. CO.
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VON SCHRADER MFG. CO.
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PopularScience_19410301_0138_003_0048.xml
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H. C. LEWIS, Pres.
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H. C. LEWIS, Pres.
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PopularScience_19410301_0138_003_0049.xml
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LASALLE EXTENSION UNIVERSITY
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LASALLE EXTENSION UNIVERSITY
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PopularScience_19410301_0138_003_0050.xml
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FRANKLIN INSTITUTE
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FRANKLIN INSTITUTE
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PopularScience_19410301_0138_003_0051.xml
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48
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R. J. Reynolds Tobacco Co.: PRINCE ALBERT
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R. J. Reynolds Tobacco Co.
PRINCE ALBERT
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PopularScience_19410301_0138_003_0052.xml
article
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49,50,51,52,53
MAN OF THE MONTH
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2,000,000 young Americans get boost to aviation
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JOHN HENNESSEY WALKER
AIR POWER clearly has become a prime factor in modern war—and there is no better way to build national air power than from the groundling up. How well the great marching aggressor nations of our century—Germany, Russia, Italy—have learned this lesson is nowhere better shown than in their elaborate programs for “air-conditioning” their young people.
PopularScience_19410301_0138_003_0053.xml
article
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54
Military
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Pads Protect the Ears from Air-Raid Blasts
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EAR PADS of sponge rubber are the latest style for British airraid wardens, members of Local Defense Volunteers and other workers who must remain outside shelters and continue their work during air raids. They can easily be fitted over a respirator, and are said to disperse the blasts from explosions before they reach the eardrum, yet let the wearer hear conversation.
PopularScience_19410301_0138_003_0054.xml
article
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Military
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Net Gives Warning When Incendiary Bombs Land
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STATIONING a watchman on top of a building to keep a lookout for incendiary bombs would be a risky business for the watchman, so St. Dunstan’s store in London installed this warning net. It is suspended just beneath the ceiling of the top floor, and attached at the edges to a cord much like the signal cord running around the inside of a bus.
PopularScience_19410301_0138_003_0055.xml
article
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55
Military
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Army Gets 500-Mile-an-Hour Plane
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SAEVEN hundred swift, fast-climbing interceptor-pursuit ships like the one above are now being built for the U. S. Army Air Corps. They are the new Lockheed P-38’s, powered by twin twelve-cylinder, 1,150-horsepower liquid-cooled Allison engines and capable of more than 500 miles an hour.
PopularScience_19410301_0138_003_0056.xml
article
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Military
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NINE ARM BADGES RATE MARINE CORPS' ENLISTED MEN
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OF THE NATION’S three armed forces—the Army, the Navy, and the Marines—the Marine Corps uses the fewest arm and collar insignia to indicate the ratings and specialties of their enlisted men. Compare the nine arm badges below with those of the Army and Navy illustrated in the December, 1940, and January, 1941, issues.
PopularScience_19410301_0138_003_0057.xml
article
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56,57,58,59,60
News
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How a Rookie Soldier Learns to Handle a Tank
The Civilian Becomes a Part of a World of Mobile Fighting Steel
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DAVID M. STEARNS
MASS-PRODUCTION education has been adopted by the Army to train rookies for the recently organized Armored Force. And it is working so well that graduates are pouring from the Armored Force School at Fort Knox, Ky., into the service at the rate of 400 to 500 a week.
PopularScience_19410301_0138_003_0058.xml
article
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Inventions
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Every Phone Is a Booth with "Hush" Mouthpiece
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PHONE-BOOTH privacy in the midst of a busy office is provided by an attachment which fits on the mouthpiece of any desk telephone. Molded of plastic, the mouthpiece is adjustable for position, and is lined with a sound-absorbing material which prevents words spoken into it from being heard more than a few feet away from the phone.
PopularScience_19410301_0138_003_0059.xml
article
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Inventions
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Novel Bottle Eliminates Spots from Spilled Ink
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IF CARELESS hands knock over the inkwell shown at the right, there’s no harm done. A special inset made of small rubber closures makes it impossible for ink to spill out, even if the bottle is held upside down. A pen supplied with the spillproof inkwell has a ball point and will write 300 words between dips.
PopularScience_19410301_0138_003_0060.xml
article
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Inventions
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Dictating Machine Uses Thin, Unbreakable Disks
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ALLOY disks seven inches in diameter and only .006 inch thick are used in a dictating machine which employs electric recording methods. Each side of a disk will hold 15 minutes of recording, and disks can be dropped, bent, or written upon without destroying the sound tracks.
PopularScience_19410301_0138_003_0061.xml
article
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Facts and Ideas
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Stray Electricity Used To Defrost Spillway Gates at Grand Coulee
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A “DEFROSTING” method never tried before will prevent the 135-foot-long spillway gates of the Grand Coulee Dam in Washington from being stuck by ice. Standard submarine power cables are looped through holes in the reënforcement webbing of the cast-iron plates.
PopularScience_19410301_0138_003_0062.xml
article
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Facts and Ideas
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Transparent Motor Boat Made of Flexible Plastic Sheets
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TRIALS of a transparent motor boat by its young builder, 17-year-old Richard Boerstler of Watertown, Mass., convince him that the craft is as practical as novel. Flexible plastic sheets, bent over framework of wood and aluminum and fastened with special cement, eliminate caulking and painting.
PopularScience_19410301_0138_003_0063.xml
article
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WHAT IS IT?
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No, it’s not a “secret weapon” for frightening enemy pilots right out of their seats. It might well serve that purpose, however, because it does fly, and it does come from Europe. It’s a close-up of the unshorn face of a European hornet. According to Webster, its scientific label is Vespa crabro and it is “very pugnacious.”
PopularScience_19410301_0138_003_0064.xml
article
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64,65,66,67
News
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Taste Engineers
TRY THESE TASTE TESTS
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BERT ANDREWS
WITH their taste buds and their sense of smell as their only tools, hundreds of skilled workers toil ceaselessly at an unusual trade so that consumers everywhere may be sure of the flavor and quality of products ranging from foods and beverages to cooking oils and medicines.
PopularScience_19410301_0138_003_0065.xml
article
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News
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Color Photos Guide Microbe Hunters
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PHOTOMICROGRAPHS of germs, nerves, tissues, and blood cells, recorded in full color and magnified as much as 3,000 times, now provide a valuable aid in medical diagnosis and teaching. In his pioneer work in this field, Julius Weber, photomicrographic expert at the Columbia Presbyterian Medical Center, in New Yprk City, has taken more than 4,000 pictures on 35-millimeter Kodachrome.
PopularScience_19410301_0138_003_0066.xml
article
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News
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Grand Central Station of the Skyways
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TRAVELERS flying to and from New York may now pass through the first building of its kind in the world, the city’s recently opened Airlines Terminal on 42nd Street opposite Grand Central Station. Although it is eight miles from the municipal airport, LaGuardia Field, the terminal was built and is operated by the five major airlines serving the city—United, T.W.A., American, Eastern, and Pan-American.
PopularScience_19410301_0138_003_0067.xml
article
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72
Automobiles
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Giant Fire Truck Totes Rescue Gear
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CARRYING EVERYTHING NEEDED FOR A RESCUE, a giant $18,000, thirteen-ton truck is the newest piece of apparatus available to New York City’s fire fighters. Among the hundreds of specially designed pieces of rescue equipment stowed inside the truck’s thirty-one-foot body are the portable gasoline-driven smoke ejector, fire extinguishers, and Foamite mixer shown below and the smoke masks above.
PopularScience_19410301_0138_003_0068.xml
article
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73,74,75,76
News
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Destroyer Hitting Power
Fast and Formidable, the "Light Cavalry of the Sea" Are the Most Versatile of All Modern Fighting Craft
DESTROYERS IN ACTION: SIX JOBS THEY PERFORM IN WARFARE AT SEA
A Destroyer's Weapons
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JOHN E. LODGE
DESTROYERS of a new American type, classed as high-speed troop transports, have joined the fleet. In conjunction with landing maneuvers practiced by U. S. Marines in Caribbean waters, this winter, they are believed to have solved the problem of quelling a fifth-column uprising in Latin America.
PopularScience_19410301_0138_003_0069.xml
article
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77
Automobiles
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Retractable Curbs Adapt Roadway for Rush-Hour Traffic
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RETRACTABLE curbs are being tested as a possible solution to Chicago’s rush-hour traffic problem. Installed in the city’s Lincoln Park express highway, three lines of concrete-and-iron dividing strips make it possible to separate the eight-lane roadway into various combinations of two, four, and six-lane units.
PopularScience_19410301_0138_003_0070.xml
article
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Inventions
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Wire-Haired Brush Mitt Keeps Dog's Coat Neat
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A DOG'S LIFE will be made happier by rub-downs with this canine currycomb, which is a mitt with short wire bristles set in one side. Designed to fit only over the fingers, the mitt has a hole for the thumb and a leather strap and buckle which can be used to tighten it around the wrist and keep it in a comfortable position when in use.
PopularScience_19410301_0138_003_0071.xml
article
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Inventions
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"Glamour Bonnet" Provides Vacuum To Aid Complexion
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SOME persons believe a mud pack is the answer to the search for a beautiful complexion, others think massage will do the trick, but Mrs. D. M. Ackerman, of Hollywood, Calif., has decided that reduced air pressure is a good treatment. So she has devised a “glamour bonnet” like a diver’s helmet with which the atmospheric pressure around the beauty seeker’s head can be lowered.
PopularScience_19410301_0138_003_0072.xml
article
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Facts and Ideas
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Back-yard Aviator Flies Homemade "Gigiscope"
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JUST for his own amusement, William R. Gihon, of Springfield, Mass., took some old automobile parts, a motor-cycle engine, and a small propeller and built a “fixed airplane,” which his family dubbed a “Gigiscope.” It will simulate almost all the motions of a plane in flight.
PopularScience_19410301_0138_003_0073.xml
article
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Facts and Ideas
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Makes Tiny Racing-Car Models
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MAKING model automobiles complete in detail from radiator grilles to tail lights is the hobby of Del Reinhold, of Reading, Pa. Working only with razor blades, sandpaper, tin shears, and a pair of pliers, he has completed twenty midget-racer outfits, with tow cars, trailers, and the racers themselves accurately built to a scale of ¼ inch to the foot.
PopularScience_19410301_0138_003_0074.xml
article
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Inventions
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Air-Inflated Metal Wing Supports Four-Wheel Flivver Plane
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SCHEDULED for appearance this month, a new lightweight stainless-steel plane designed by William B. Stout is of unusual design. Air entering holes under the wing inflates the air-tight, paper-thin steel covering, keeping it rigid in flight. Its worldfamous designer claims that the four-wheel landing gear permits the plane to land safely with the throttle open. It is driven and steered on the ground like a car.
PopularScience_19410301_0138_003_0075.xml
article
80
80
Facts and Ideas
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Living Shadow Dances on Giant Electric Sign
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[no value]
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PIROUETTING in front of a bank of photo-electric cells, Dixie Dunbar, New York dancer, recently cast a living silhouette on the world’s largest animated electric sign above the Great White Way. Her shadow, thrown on the electric eyes, blacked out lights in corresponding areas of the sign.
PopularScience_19410301_0138_003_0076.xml
article
81
81,82,83,84,85,86
News
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America Rebuilds Her Merchant Marine
Ten Years of Ship Building Are Planned to Add 500 Ships to the U. S. Merchant Fleet
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[no value]
ROBERT E MARTIN
NEW PRIDE is evident today in the bearing of the officers and men of America’s merchant marine. New respect is manifested for this nation’s seagoing commerce carriers by the personnel of foreign vessels. There’s a reason. There are, to be exact, 500 reasons—each one a trader that will fly the American flag in the seven seas.
PopularScience_19410301_0138_003_0077.xml
article
87
87
Inventions
[no value]
NEW-TYPE X-RAY MACHINE USES INEXPENSIVE FILMS
[no value]
[no value]
[no value]
[no value]
X-RAY PHOTOGRAPHS of the chest and other parts of the body can be made on a four by five-inch negative instead of the customary 14 by 17-inch film, with a camera developed by the General Electric X-Ray Corporation. Pictures are produced quickly and at reduced cost.
PopularScience_19410301_0138_003_0078.xml
article
87
87
Facts and Ideas
[no value]
CHANGING STYLES IN POWER PLANTS ARE ILLUSTRATED
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[no value]
[no value]
[no value]
in these pictures of the old and the new. At the left is the first steam turbine built by George Westinghouse in 1896. It produced a mere 120 kilowatts. At the right is a model, scaled ½ inch to the foot, of a 65,000 - kilowatt turbine - generator which is being built at the South Philadelphia and East Pittsburgh plants of the Westinghouse Electric and Manufacturing Company.
PopularScience_19410301_0138_003_0079.xml
article
88
88
Inventions
[no value]
Atoms and Molecules Form Chemical Building Set
[no value]
[no value]
[no value]
[no value]
CHEMICAL building blocks, detachable from cardboard sheets, solve the mysteries of formulas, valence, and equations for youngsters. To symbolize a molecule of water, for instance, two hydrogen blocks are joined to one oxygen block. Misfits call for rearranging the blocks.
PopularScience_19410301_0138_003_0080.xml
article
88
88
Inventions
[no value]
Hydraulic Brake for Bicycle Controlled from Handlebar
[no value]
[no value]
[no value]
[no value]
OPERATING smoothly but powerfully, a hydraulic brake for bicycles has been designed by H. L. Mueller of Cleveland, Ohio. Instead of back-pedaling, as in using a standard coaster brake, the rider simply gives the right-hand grip of his handlebars a quarter turn. This forces the hydraulic fluid through a metal tube to the rear hub of the bike, and applies pressure to a brake drum to slow the wheel.
PopularScience_19410301_0138_003_0081.xml
article
89
89
Un-Natural History
[no value]
Un-Natural History
[no value]
[no value]
[no value]
Gus Mager
[no value]
PopularScience_19410301_0138_003_0082.xml
article
90
90,91,92,93,94,95
News
[no value]
STUDENT SOLDIERS LEARN TO RIDE THE BUCKING .50 CALIBERS
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[no value]
[no value]
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EQUALLY effective for offense or defense, these .50 caliber machine guns of the 62nd Coast Artillery (antiaircraft) Battalion at Fort Tilden, New York, are a good example of where a modern army gets its tremendous fire power. In a single minute each gun can spit 600 bullets, with a total weight of 150 pounds, and each bullet can penetrate ⅝ of an inch of armor plate at a 500-yard range, or six inches of concrete at 100 yards.
PopularScience_19410301_0138_003_0083.xml
article
96
96
Facts and Ideas
[no value]
Floating Homes
[no value]
[no value]
[no value]
[no value]
PROVING that there’s more than one way to go to sea, Miami, Fla., residents are building homes 11 miles offshore in Biscayne Bay. They rent land under the water at $1 an acre, sink some pilings and put the house on top. Some add sharkproof swimming pools by sinking more pilings and running an underwater fence around them.
PopularScience_19410301_0138_003_0084.xml
article
97
97
Facts and Ideas
[no value]
Four Steel Towers Support New Roleless Circus Tent
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[no value]
[no value]
[no value]
DISPENSING with inside tent poles, ropes, and braces, a new circus tent being built for Ringling Brothers Barnum and Bailey Circus will be supported entirely from the outside on cables strung between four huge metal masts set on flat bases and steadied by guy wires.
PopularScience_19410301_0138_003_0085.xml
article
98
98
Facts and Ideas
[no value]
Tree Hopper
[no value]
[no value]
[no value]
[no value]
FANTASTICALLY shaped tree hoppers, midget insects so grotesque in appearance that they commonly are called “insect brownies,” are represented by magnified models of tinted beeswax in a display at the American Museum of Natural History, New York City.
PopularScience_19410301_0138_003_0086.xml
article
99
99
Facts and Ideas
[no value]
Radio Meter Checks Listening Habits
[no value]
[no value]
[no value]
[no value]
ACCURATE records of the listening habits of the nation’s radio audience now may be compiled with virtually no inconvenience to the listeners involved. It is done with a recording machine operated by a cable attached to the condenser of the radio set.
PopularScience_19410301_0138_003_0087.xml
article
100
100,101
Here's My Story
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Here's My Story
THE CAREER OF MAJOR A. W. STEVENS
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[no value]
A. W. STEVENS
[no value]
PopularScience_19410301_0138_003_0088.xml
article
102
102,103,104
News
[no value]
How Bats "See" in the Dark
After Nearly 150 Years of Experimenting, Science Solves the Riddle of Night Flight
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[no value]
EDWIN TEALE
TEN THOUSAND experiments in a soundproof laboratory at Harvard University have just enabled two young scientists, Robert Galambos and Donald R. Griffin, to solve the mystery of how bats avoid objects in the dark, a riddle that baffled research workers for a century and a half.
PopularScience_19410301_0138_003_0089.xml
article
105
105
Facts and Ideas
[no value]
Just an Ordinary Candle Is Sculptor's Material
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[no value]
[no value]
[no value]
COMICAL figures can be “carved,” with a minimum of effort, from ordinary candles, according to Ludwig Wonkow of New York City. One candle for each figure, a few matches, pins, toothpicks, and a pocket knife with a constantly heated blade make up the list of tools and accessories needed.
PopularScience_19410301_0138_003_0090.xml
article
105
105
Facts and Ideas
[no value]
Passengers Listen to Radio As They Ride in Elevator
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[no value]
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RADIOS entertain elevator passengers, probably for the first time, in a large Philadelphia office building. Push buttons in the car operate its speaker by wired remote control of a receiver with a loop antenna at the head of the shaft, over standard elevator cable.
PopularScience_19410301_0138_003_0091.xml
article
106
106,107,108,109
News
[no value]
VOOMP CLANK BONK
Name Your Noise and the Movies' Sound Makers Will Give It to You
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[no value]
[no value]
SERIOUS-MINDED musicians in the Walt Disney studio look at a picture of Donald Duck falling into a lake on a three-legged motor cycle and agree: “What we need for the sound track there is a loud ‘voomp!’” They eye another comedy sequence, in which a six-cylinder engine is popping off, and realize it would be even funnier if they could make each cylinder give out a different sound.
PopularScience_19410301_0138_003_0092.xml
article
110
110,111,112,113
News
[no value]
Popeye-The Man With a Thousand Voices
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[no value]
[no value]
MILTON BRACKER
HARRY WELCH discovered he could do things with his voice that nobody else could, when he was a kid in P.S. 6, Baltimore, some 35 years ago. He found it out first, but his classmates were right behind. They kept him so busy imitating lions and tigers and cows and ducks that “I got throwed out of school four times.”
PopularScience_19410301_0138_003_0093.xml
article
114
114,115
Facts and Ideas
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Famous Organ Gets a New Voice
[no value]
[no value]
[no value]
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FAMILIAR to radio listeners from coast to coast, the great organ in the Mormon Tabernacle at Salt Lake City, Utah, is getting a new voice. New reeds will modernize the famous old instrument, and its 6,868 pipes will be increased to 8,000. Nearly as well known as the organ, the craftsman in charge of this enormous task is James H. Nuttal, of Glendale, Calif.
PopularScience_19410301_0138_003_0094.xml
article
116
116,117
News
[no value]
Machine Named for a Man
[no value]
[no value]
[no value]
[no value]
PUTTING pennies on a railroad track, to watch trains flatten them, used to fascinate a Kansas boy named Dick Templin. Today, as chief engineer of tests for the Aluminum Company of America, he presides over the world’s most powerful crushing engine of its kind.
PopularScience_19410301_0138_003_0095.xml
article
118
118,119
Facts and Ideas
[no value]
Making Insulators Is A Mud-Pie Job
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[no value]
[no value]
[no value]
You see electrical insulators everywhere. You know what they do. This story tells how they are made. The Westinghouse plant at Derry, Pa., makes feldspar into mud, and mud into insulators. But the process isn’t quite as simple as that.
PopularScience_19410301_0138_003_0096.xml
article
120
120
Inventions
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Single-Sleeve-Valve Motor Has Only Ten Moving Parts
[no value]
[no value]
[no value]
[no value]
ASHLEY COOPER HEWITT, aviation and automotive engineer of Pasadena, Cal., grandson of Peter Cooper, who built the first American locomotive, has originated a four-cycle, single-sleevevalve motor with only ten moving parts. Dynamometer tests indicate that the little engine, with bore and stroke of one and three quarters inches, develops three times the power of ordinary motors the same size.
PopularScience_19410301_0138_003_0097.xml
article
120
120
Inventions
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Electric Locomotive for Mines Needs Little Headroom
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[no value]
[no value]
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LOW-VEIN tunnel and haulage costs have been reduced immensely through the introduction of a fifteen-ton General Electric mine-haulage locomotive with an over-all height of only 26 inches. High-speed, body-mounted, self-ventilated motors and double-reduction gear drives enable the locomotive to operate in a 40-inch vein.
PopularScience_19410301_0138_003_0098.xml
article
121
121
Military
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Soldiers Explode Dud Shells with Charges of T.N.T.
[no value]
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EXPLODING the dud shells that fail to go off during artillery practice is the unenviable job of the sergeant pictured at the right. A member of the 52nd Ordnance Company, his task is to plant half a pound of T.N.T. beside the nose of the unexploded shell, attach a firing cap and fuse, then light the fuse.
PopularScience_19410301_0138_003_0099.xml
article
121
121
Inventions
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Lightweight "Lung" Aids Fever Therapy
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[no value]
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[no value]
To LESSEN the strain on a patient’s heart and aid him to breathe easily while undergoing artificial-fever treatment, physicians at the California Hospital in Los Angeles recently employed a lightweight portable “lung.” Made of aluminum, the respirator was fitted around the patient, William Balluff, an arthritis sufferer, before he was placed in the cylindrical fever chamber where his temperature was artificially raised to 106 degrees, in an attempt to alleviate and cure his malady.
PopularScience_19410301_0138_003_0100.xml
article
122
122
New Manual for Photographers Packs a Whole Camera Library into One Convenient Handbook
[no value]
New Manual for Photographers Packs a Whole Camera Library into One Convenient Handbook
All That You Need To Know About Builders' Hardware
[no value]
[no value]
[no value]
A LIBRARY of photographic information, compressed into 380 pages and bound in compact, lose-leaf form, is now available for amateurs and advanced photographers. The ten sections of the new volume, the “Kodak Reference Handbook” (Eastman Kodak Co., $2.75) offer data and practical suggestions on everything from lenses to lantern slides.
PopularScience_19410301_0138_003_0101.xml
article
123
123
Inventions
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“Automatic Nurse" Enables Invalids To Serve Themselves
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A BOON to a helpless invalid and to those who wait on him, a self-service electric outfit enables him to read, listen to the radio, and turn the lights in the room on or off. It also will ring for other aid. The “automatic nurse” has only two controls.
PopularScience_19410301_0138_003_0102.xml
article
123
123
Inventions
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Medicines Are Measured by Scientific Teaspoon
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“ONE teaspoonful three times a day,” says the label on your medicine bottle. But which will you choose of the 29 different sizes of teaspoons now in use? So that you can take your potion accurately, a “medical teaspoon” of transparent plastic has been introduced by the Owens-Illinois Glass Company, of Toledo, Ohio.
PopularScience_19410301_0138_003_0103.xml
article
124
124,125
Facts and Ideas
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The Coast Guard Takesn to Wheels
[no value]
[no value]
[no value]
[no value]
COMBINE in a single" vehicle a radio station, an ambulance, a weather-reporting service, a fire engine, and an airport lighting unit and you have one of a fleet of emergency trucks just placed in service by the U. S. Coast Guard. For use in floods, hurricanes, and life-saving and patrol work, the trucks have been assigned to every Coast Guard district.
PopularScience_19410301_0138_003_0104.xml
article
126
126
Facts and Ideas
[no value]
Mechanical Echo Coaches Actors
[no value]
[no value]
[no value]
[no value]
LISTENING to their own voices is more than a pastime for motion-picture actors and actresses. It is an important part of their training for difficult parts, in which they may be required to sound like anything from Hindu fakirs to cockney cab drivers.
PopularScience_19410301_0138_003_0105.xml
article
126
126,220
Automobiles
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Question Bee
[no value]
[no value]
[no value]
[no value]
For answers see page 220. You get ten points for each one you have right. A total score of 70 is good 1 If you park your car on a steep hill, better play safe by (a) padlocking a wheel to the chassis (b) hanging red lanterns at front and back (c) leaving it in low gear.
PopularScience_19410301_0138_003_0106.xml
article
127
127,128,129,130,131,220
AUTOS
[no value]
Mr. Ford Tells of Plans for Stronger Cars
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[no value]
[no value]
SCHUYLER VAN DUYNE
TWO YEARS AGO, Henry Ford sat at a table in a laboratory and instructed a young research chemist to go ahead and find out if plastic bodies for cars were practical. Recently I sat at that same table while Mr. Ford revealed that the chemist had brought in an affirmative answer.
PopularScience_19410301_0138_003_0107.xml
article
132
132,133
Automobiles
[no value]
GETTING THE MOST OUT OF Your New Car
Ralph DePalma, Famous Racing Driver, Gives Some Good Advice on What To Do—and What Is Best To Leave Alone
[no value]
[no value]
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THE FIRST THING Ralph DePalma does when he buys a new car is to read his instruction book. It’s as easy as rolling off a log, yet few new-car buyers do it until they begin to wonder what’s wrong under the hood. Then, it’s usually too late. The famous race driver who until last summer had driven more miles in competition on the Indianapolis Speedway than anyone else, can’t understand it.
PopularScience_19410301_0138_003_0108.xml
article
134
134,135
Automobiles
[no value]
EIGHT HANDY TIPS FOR THE MOTORIST
[no value]
[no value]
[no value]
[no value]
1 CLEANING DIRTY GEARS and engine parts to which grease, sludge, and gummy deposits are clinging is simplified with a blow torch which has been filled with gasoline and pumped up to full pressure. Place the parts to be cleaned in a pan or a clean pail, and open the torch jet so that it shoots a stream over the dirty surfaces.
PopularScience_19410301_0138_003_0109.xml
article
136
136,137,138,139
American Research Produces
[no value]
Gasoline from Coal
[no value]
[no value]
[no value]
ALDEN P. ARMAGNAC
MADE out of coal, an all-American synthetic gasoline has begun streaming from towering, asbestos-jacketed stills at the U. S. Bureau of Mines experiment station in Pittsburgh, Pa. Initial samples of the product, sent in black drums to the Gulf Research Laboratories, already are being tested in a laboratory-type engine. Road trials of these or improved samples are expected to follow soon.
PopularScience_19410301_0138_003_0110.xml
article
140
140,141,142,222
Automobiles
[no value]
GUS solves an army job
The Brains of the Model Garage rarely had to help on a job his grease monkey tackled. But Harry still knows where to turn for help on the general's car!
GUS SAYS:
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[no value]
MARTIN BUNN
SEVERAL of us regular customers of the Model Garage have a habit of dropping in on Gus Wilson a couple of afternoons a week, after we’ve finished work, and sitting around his shop talking about this, that, and the other thing until it’s time to go home to our dinners.
PopularScience_19410301_0138_003_0111.xml
article
143
143
Auto Ideas
[no value]
Caps Identify Keys
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0112.xml
article
143
143
Auto Ideas
[no value]
Steering-Wheel Lock
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0113.xml
article
143
143
Auto Ideas
[no value]
Compact Car-Washing Unit
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0114.xml
article
143
143
Auto Ideas
[no value]
Accessory Switch Panel
[no value]
[no value]
[no value]
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PopularScience_19410301_0138_003_0115.xml
article
144
144
Automobiles
[no value]
Toys Teach Children How Cars are Built
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[no value]
[no value]
[no value]
DESIGNED to show children where the mechanical parts of a car are located, toy automobiles are now available with a worm’seye view of a conventional car lithographed on the sheet-metal bottom of the toys. Axles, the engine, transmission and clutch housing, drive shaft, springs, and other parts are all shown in their proper positions on the chassis.
PopularScience_19410301_0138_003_0116.xml
article
144
144
Automobiles
[no value]
Window Fix-It Kit
[no value]
[no value]
[no value]
[no value]
REPLACEMENTS for the parts most apt to wear out in car-window regulators—pinions, springs, washers, rivets, and the like—are all contained in inexpensive kits now marketed for several makes of cars. The manufacturer claims that it takes less than ten minutes to rebuild worn-out regulators with the kits, at low cost.
PopularScience_19410301_0138_003_0117.xml
article
144
144
Automobiles
[no value]
Flexible Gas-Hose Nozzle of Synthetic Rubber
[no value]
[no value]
[no value]
[no value]
SYNTHETIC rubber, unaffected by gasoline, oil, heat, cold, sunlight, or the air, forms the material for a gasoline-hose nozzle developed after three years of research. The synthetic material is itself a conductor of static electricity.
PopularScience_19410301_0138_003_0118.xml
article
145
145,146,147,148,149,150
HOME and WORKSHOP
[no value]
I Build a Room FOR Bobby
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[no value]
[no value]
CLIFFORD McBRIDE
THE very first word uttered by my infant son was “Boat!” Naturally, his mother and I were elated; this was so much more intelligent than the customary “da da” or “goo,” but we didn’t attach any particular marine significance to it at the time.
PopularScience_19410301_0138_003_0119.xml
article
151
151
The Handya Man
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Cat Quickly Learns to Pour Milk from a Tilting Bottle
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EDMUND DOWLING
DIFFICULT as it is to teach a cat tricks, she will quickly learn to use the amusing device shown. This is merely a bottle so mounted that it can be tilted to pour milk into a small dish. To familiarize a cat with the device, place one of her paws on the neck of the bottle and push it down until some milk runs out.
PopularScience_19410301_0138_003_0120.xml
article
151
151
The Handya Man
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Hot Soldering Iron Aids in Cutting Off Narrow Glass Strips
[no value]
[no value]
[no value]
E. B.
CUTTING glass, if it is thicker than usual, sometimes causes difficulty. This is especially true if a narrow strip has to be trimmed off one or more edges, because it is hard to break the piece off smoothly. One thing that helps is to bring a hot soldering iron into contact with the glass along the mark made by the glass cutter.
PopularScience_19410301_0138_003_0121.xml
article
151
151
Shop Data File
[no value]
WOOD BLEACH
[no value]
[no value]
[no value]
[no value]
A bleach that is especially valuable for obtaining light or blond finishes on cabinet woods used for craftwork and furniture projects can be prepared as follows: Sodium metasilicate (water glass)................ 16 oz. Sodium perborate ............................................1½ oz.
PopularScience_19410301_0138_003_0122.xml
article
152
152
Home Building
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$1000 in Prizes
FOR TELLING US WHAT KIND OF HOME YOU'D LIKE TO BUILD
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[no value]
[no value]
HERE is a contest that will be really profitable for you to enter . . . win or lose. We want you to start thinking about the sort of house best suited to the needs of your own family. Get your ideas down on paper, send them to us, and compete for one of the thirty awards we are offering, as follows:
PopularScience_19410301_0138_003_0123.xml
article
153
153,154,155,156,157
Home Building
[no value]
How an Architect Designs a House
Rules
ARCHITECTS' AND BUILDERS' SHORTHAND
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[no value]
HENRY H. SAYLOR
AN ENGINEER called me in the other day seeking an answer to the question of how one goes about planning a house. “I know how to draw to scale and I think I know what I want in a house,” he said, “but frankly I’m stuck. Every time I get most of the pieces together in this jig-saw puzzle, I run across one that doesn’t fit, and have to start back at the beginning.”
PopularScience_19410301_0138_003_0124.xml
article
153
153,154,155,156,157
Home Building
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Exterior House Walls
10 STANDARD METHODS OF CONSTRUCTION
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[no value]
[no value]
To GIVE you a better idea of some of the more common types of wall construction used for small houses, we asked Carl T. Sigman and William J. Ward, Jr., who hold top rank among architectural illustrators, to sketch ten different varieties and add their own comments as to the characteristics of each.
PopularScience_19410301_0138_003_0125.xml
article
158
158,159
IDEAS for HOME OWNERS
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IDEAS for HOME OWNERS
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[no value]
[no value]
[no value]
ADJUSTABLE SOCKET WRENCH. Any size hexagonal or square nut can be gripped by this socket wrench, recently placed on the market. It has movable two-piece double-sided jaws, and adjustment is made by turning the serrated handle. A heavy duty screwdriver bit supplied with the tool fits between the jaws.
PopularScience_19410301_0138_003_0126.xml
article
160
160,161
New Appliances for the Household
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New Appliances for the Household
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[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0127.xml
article
162
162,163
The Handya Man
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KEEPING THE HOME SHIPSHAPE
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[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0128.xml
article
164
164,165,166
CRAFTWORK
[no value]
HeartShaped Jewelry
[no value]
[no value]
[no value]
W. T. BAXTER
Art Metal and Jewelry Instructor, Woodrow Wilson High School, Washington, D. C. BY USING a grinding or buffing head with a step pulley for various speeds, you can grind and polish beautiful heart-shaped cabochons or smoothly polished stones from semiprecious gem material. When mounted, these make attractive pieces of jewelry.
PopularScience_19410301_0138_003_0129.xml
article
167
167,168
WORKING TIME: One Evening
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Reversible Miniature Photo Frames
[no value]
[no value]
[no value]
HARRY WALTON
A SIDE from the time needed for cement to harden, any one of the three miniature frames illustrated on this and the following page can be made in an evening’s time. The dimensions given can be scaled to any size if larger photos are to be used.
PopularScience_19410301_0138_003_0130.xml
article
168
168
Shop Data File
[no value]
ALUMINUM AND STEEL
[no value]
[no value]
[no value]
[no value]
Aluminum is etched in the same manner as copper and brass, except that muriatic acid is used. Full-strength muriatic acid will etch to a depth of about 0.003" per minute, and slower in proportion to how much it is diluted with water. Dilution is often desirable in order to give better control of the operation.
PopularScience_19410301_0138_003_0131.xml
article
169
169
CRAFTWORK
[no value]
Gavel, Ballot Box, and Striker
[no value]
[no value]
[no value]
FRANK HEGEMEYER
CLUBS, lodges, and other organizations will welcome the gift of a gavel, striker, and ballot box like those illustrated. Home workshop clubs in particular will find the three pieces of great interest as there is no end of original designs that may be worked out so long as the basic measurements are followed.
PopularScience_19410301_0138_003_0132.xml
article
170
170,171
WOODWORKING
[no value]
Low-Cost Modern Bed
LIST OF MATERIALS—54" BED
[no value]
[no value]
J. W. HITE
DONALD A. PRICE
BESIDES being economical and easy to construct, this modern bed has a variety of advantages. It differs from those of similar type found in furniture stores in that the side cabinets are hinged so they will turn back. In that position they do not shut off the air and are not in the way of making the bed.
PopularScience_19410301_0138_003_0133.xml
article
172
172,173,174,175
WOODWORKING
[no value]
Lumber Racks and Storage Bins
[no value]
[no value]
[no value]
EDWIN M. LOVE
A BESETTING problem in the home workshop is the storing of lumber and disposal of waste. Who likes to spend hours of his leisure time sweeping out the workroom or sorting piles of boards when a breakfast set, a garden trellis, or a ship model is about ready for a coat of paint?
PopularScience_19410301_0138_003_0134.xml
article
174
174
WOODWORKING
[no value]
Robert Jaacks Gives Report on His Budget Shop
[no value]
[no value]
[no value]
ROBERT JAACKS
READERS who have been following Mr. Love’s series of articles from the beginning will recall that I started my model shop with an initial outlay of $25 and a monthly budget of $15. In sixteen months I have acquired a good collection of hand tools; an 8" circular saw with extension table and guard, and a 4" jointer, both on a combination stand and driven by a ½-h.p. motor; a 24" scroll saw on a stand with a ¼-h.p. motor; an 11" woodturning lathe with a ⅓-h.p. motor, a sanding disk and drum, two faceplates, screw center, keyless drill chuck, grinding wheel, and adapter.
PopularScience_19410301_0138_003_0135.xml
article
176
176
Models
[no value]
Novel “Finless Fin" Keel Improves Model Yacht
[no value]
[no value]
[no value]
R. B. DABBS
IT HAS always been the aim of modelyacht designers to incorporate such features in their designs as would make the finished yacht “balanced.” This quality, reduced to fundamentals, means an inherent ability of a vessel to sail the course desired.
PopularScience_19410301_0138_003_0136.xml
article
176
176
Models
[no value]
Installing Controls That Really Work in a Scale Model Airplane
[no value]
[no value]
[no value]
C. D. HOLLMANN
IT IS usually a very difficult and discouraging task to build working controls into a replica model airplane. The system illustrated, however, looks to all outward appearances a duplicate of the real thing. Fine music wire or very fine braided copper wire should be used for cables.
PopularScience_19410301_0138_003_0137.xml
article
177
177
Models
[no value]
Deringer Pist
WHITTLED FULL SIZE FROM W
[no value]
[no value]
CARL G. ERICH
BECAUSE of its delicate design and markings, this model of a Deringer capand-ball pistol has been made full size. It is only 7 1/16" long. Transfer the design to a white pine board 1⅛" thick. Bore a hole on the inside of the trigger guard and jig-saw this first; then saw the entire outline.
PopularScience_19410301_0138_003_0138.xml
article
178
178,179,180,181,182
Outdoors
[no value]
Cruising Saildoat
A FAST NINETEEN-FOOT CABIN SLOOP FOR INLAND AND OFFSHORE WATERS...USES OUTBOARD OR INBOARD MOTOR
PART I
MATERIALS FOR THE CRUISING SAILBOAT
LUMBER
FASTENINGS
MISCELLANEOUS
[no value]
[no value]
Bruce
Willard Crandall
THE new POPULAR SCIENCE cabin sailboat Whitecap is ideally suited either for day sailing or for extended cruising over varied waterways. If you build this beautiful 19' craft— and it is fortunately quite easy to construct for a boat of its size—your vacation problems will be solved.
PopularScience_19410301_0138_003_0139.xml
article
183
183
Outdoors
[no value]
“Mary, Quite Contrary“ Is Theme of Plywood Weather Vane
[no value]
[no value]
[no value]
[no value]
ALTHOUGH weather vanes are usually metal, this one is so designed that it can be scroll-sawed from ⅜" five-ply waterproof (resin-bonded) plywood. It is riveted to a ⅞" dowel, which serves as a shaft. The bottom of the dowel is drilled to receive a ⅜" steel rod, and the rod fitted in a pipe with a 7/16" hole.
PopularScience_19410301_0138_003_0140.xml
article
183
183
Outdoors
[no value]
Disk Sprocket Guard Protects Bicycle Rider's Trousers
[no value]
[no value]
[no value]
R. K.
SOME messengers, newsboys, and others who ride bicycles constantly in traffic and in all sorts of weather prefer the disk type of sprocket guard illustrated. When it is used, the bottom of floppy trousers legs will not catch on the exposed sprocket teeth and be drawn up to entangle the chain.
PopularScience_19410301_0138_003_0141.xml
article
183
183
Outdoors
[no value]
Dual-Tired Truck Wheels Tamp Refill Dirt into Long Trench
[no value]
[no value]
[no value]
R. B.
WHEN a long trench must be refilled and tamped, as after installing water pipe, a dual-tired truck may be used effectively. The trench should first be filled about level with loose earth, and the truck tires passed back and forth over it two or three times.
PopularScience_19410301_0138_003_0142.xml
article
183
183
Outdoors
[no value]
Brick Priming Needs Dry Weather
[no value]
[no value]
[no value]
[no value]
Two or three dry days should precede the priming of new brick on a house or wall. Never attempt to prime or apply the regular paint coats in very cold weather.
PopularScience_19410301_0138_003_0143.xml
article
184
184,185,186
New Shop Ideas
[no value]
Sanding Disk and Cross-Slide Table
[no value]
[no value]
[no value]
C. W. WOODSON
MANY small parts can be given a fine, accurate finish on a sanding disk made up to fit your metal-cutting lathe as shown in Fig. 1. As this attachment can be used equally well on wood, plastics, or metal, it will be a worth-while addition. Only two inexpensive gray-iron castings are required, and all the machine work can be done on the lathe itself.
PopularScience_19410301_0138_003_0144.xml
article
186
186
New Shop Ideas
[no value]
Extended Handle of Wrench Shields Sharp Lathe Bit
[no value]
[no value]
[no value]
[no value]
A SHARP turning tool bit left in the toolpost of a lathe is a hazard because the operator’s hand or arm may come into accidental contact with it. An effective way of shielding such a bit is to turn the handle of the lock-screw wrench straight out, as shown.
PopularScience_19410301_0138_003_0145.xml
article
187
187
New Shop Ideas
[no value]
Small Brass Parts Knurled Neatly Without Using Special Tools
[no value]
[no value]
[no value]
F. H.
WHEN no knurling tool is available and one wishes to add an ornamental grip to an otherwise smooth metal turning of brass or other soft metals, try the method illustrated above. It produces neat, clean-cut, parallel knurling. A spear-pointed tool bit is turned over on its side, and the cuts are made with the use of the cross feed.
PopularScience_19410301_0138_003_0146.xml
article
187
187
New Shop Ideas
[no value]
Wire Soap Basket Holds Cans While Being Warmed on Pipe
[no value]
[no value]
[no value]
[no value]
GLUE, wax, plumbago, and other compounds in small cans often have to be kept warm for use in the workshop. If there is a horizontal steam or hot-water pipe in some convenient location, a common wire soap tray may be used to hold a can as shown.
PopularScience_19410301_0138_003_0147.xml
article
187
187
New Shop Ideas
[no value]
Repairman Carries Tiny Files in an Empty Pencil Barrel
[no value]
[no value]
[no value]
K. M.
IN ORDER to carry jeweler’s files in his pocket so that they would always be at hand for the repair of very delicate recording instruments, one mechanic removed the insides from a cheap mechanical pencil and used it as a holder. A bit of cotton was stuffed into the tapered end so that the file points would not protrude.
PopularScience_19410301_0138_003_0148.xml
article
188
188
New Shop Ideas
[no value]
Washer Serves as Substitute for Offset Screw Driver
[no value]
[no value]
[no value]
[no value]
PROBABLY every mechanic has had to remove or replace a screw in a tight place on some occasion when a right-angle or offset screw driver was not available. In such an emergency an ordinary iron washer makes a good substitute. A center punch or other round object can be inserted in the washer to turn the screw.
PopularScience_19410301_0138_003_0149.xml
article
188
188
New Shop Ideas
[no value]
Gauge Gives Accurate Adjustment of Cutter for Boring Holes
[no value]
[no value]
[no value]
C. W.
THE cut-and-try method of boring holes can be avoided by any machinist who makes this simple boring-bar cutter gauge. It consists of a short steel rod, drilled and tapped to receive a ¼"-28 thumb screw and knurled locking nut. Used in conjuction with ordinary V-blocks, as shown, it enables accurate adjustment of the boring cutter.
PopularScience_19410301_0138_003_0150.xml
article
188
188
Shop Data File
[no value]
FOUR-JAW INDEPENDENT CHUCK
[no value]
[no value]
[no value]
[no value]
The four-jaw independent lathe chuck is the most practical, most used chuck for general machine-shop work. If the lathe is to have but one chuck, it should be of this type. The jaws are moved separately for holding round, square, or odd-shaped work.
PopularScience_19410301_0138_003_0151.xml
article
189
189
New Shop Ideas
[no value]
Special Lathe Tools Ground from Set-Screw Wrenches
[no value]
[no value]
[no value]
R. H. MCNAIR
DISCARDED safety set-screw wrenches are excellent material for making special lathe tools such as deep-boring bars and internal threading tools. They are hexagon shaped and come in a wide range of sizes. As the temper is just about right, it is necessary only to grind the points to shape.
PopularScience_19410301_0138_003_0152.xml
article
189
189
New Shop Ideas
[no value]
Two Easily Made Wall Racks for Holding Large and Small Tools
[no value]
[no value]
[no value]
[no value]
LARGE wrenches, screw drivers, and other rod-shaped tools can be hung by means of eccentric disks and fixed pegs as shown in the photograph at the left. The pegs are dowel rods covered with pieces of garden hose and held by screws. The disks, 2" or so in diameter, are cut from ⅞" wood, and their edges are covered with electrician’s rubber splicing tape.
PopularScience_19410301_0138_003_0153.xml
article
189
189
Shop Data File
[no value]
THREE-JAW SCROLL CHUCK
[no value]
[no value]
[no value]
[no value]
The three-jaw geared scroll chuck is used mainly for holding and quickly truing round work. The jaws move in unison for concentrically chucking cylindrical work. The jaws of the universal chuck cannot be reversed, so two sets of jaws are usually furnished— one set for gripping the outside of work and the other set for gripping in a hole.
PopularScience_19410301_0138_003_0154.xml
article
190
190,191
New Shop Ideas
[no value]
High-Speed Routing
DONE WITH LATHE AND CIRCULAR SAW TABLE
[no value]
[no value]
Howard R. Heydorf
BY COMBINING circular saw and woodturning lathe, a woodworker can equip himself with a high-speed routing machine that has definite advantages over a drill press or other machines used for this type of work. Because it makes use of the regular saw table with its standard miter gauge and rip fence, this set-up needs only a few simple jigs to adapt it for any work.
PopularScience_19410301_0138_003_0155.xml
article
192
192,193,194,195
Miscellaneous
[no value]
Electric Table Fountain
Tape Renews Grip of Clamp-on Lamp
[no value]
[no value]
KENDALL FORD
WHEN filled with flowers, this easily built electric fountain is an attractive centerpiece for the diningor living-room table. Flowers last much longer than when placed in ordinary containers, and the fountain also serves as a humidifier.
PopularScience_19410301_0138_003_0156.xml
article
195
195
Shop Data File
[no value]
ELECTROPLATING, PART 1
[no value]
[no value]
[no value]
[no value]
In electroplating, a large piece of the plating metal (copper, nickel, silver, etc.) is attached to the positive wire. This is called the anode. Suitable chemicals are dissolved in the water to form the electrolyte, or plating solution.
PopularScience_19410301_0138_003_0157.xml
article
196
196,197
HOME SCIENCE
[no value]
Science Stunts
[no value]
[no value]
[no value]
[no value]
THE more you know about how household appliances work, the more you will be able to use them to the best advantage. And to anyone of normal curiosity, it is an added satisfaction to understand the principles of everyday objects about him. So here are five little experiments that demonstrate the workings of an atomizer or spray gun, a sink trap, an ice box, a pressure cooker, and a fireless cooker.
PopularScience_19410301_0138_003_0158.xml
article
198
198,199
RADIO IDEAS
[no value]
RADIO IDEAS
[no value]
[no value]
[no value]
[no value]
ADJUSTABLE GRID CAPS now available will fit either the small grid tips of metal tubes or the larger tips found on many of the older glass tubes. The spring-brass clip is completely insulated as shown in the photograph above, so that the fingers cannot touch the tube.
PopularScience_19410301_0138_003_0159.xml
article
200
200,201,202
Radio
[no value]
Two-Tube Radio Phonograph
LIST OF PARTS
[no value]
[no value]
FRANK TOBIN
USING only two tubes, this radio-phonograph combination provides output and quality equal to sets using five tubes or more. It boasts all the features found in combinations using eight tubes, for the two-tube chassis incorporates a variable tone control working on both radio and records, a volume control (also working on either radio or records), a phonoradio switch, and a sensitivity control.
PopularScience_19410301_0138_003_0160.xml
article
203
203
Radio
[no value]
Get Started IN Radio
PART VI . . . TRF FOUR TUBER
[no value]
[no value]
[no value]
THIS radio is the sixth and last in our “Getting Started for $8.95” series. The set is a four-tube, tuned-radio-frequency receiver with an untuned stage of radio-frequency coupled to a tuned detector stage with regeneration. Only one coil and one tuning condenser are required, instead of a ganged condenser and a pair of matched antenna and radio-frequency coils.
PopularScience_19410301_0138_003_0161.xml
article
204
204,205,206,207
Photography
[no value]
Feash-Master at Twenty-Three
Popular Science Interviews Photographer Ralph Morse
[no value]
[no value]
[no value]
PROFESSIONAL photography is a fastmoving business, where reputations can doom almost overnight. Ralph Morse, 23year-old cameraman, has been working at photography a bit less than three years, and already has made a name for himself among the critical fellows of his craft for expert use of flash lighting.
PopularScience_19410301_0138_003_0162.xml
article
208
208,209
Photography
[no value]
Masking Your Projection Transparencies
[no value]
[no value]
[no value]
S. Y. CALDWELL
MASKS of appropriate size and shape will improve your 35-mm. natural-color transparencies as much as intelligent cropping helps photographs on paper. With India ink rule a mask chart pattern as shown on smooth white paper. The marginal lines are an exact 4" square, with corners “bleeding.” The inner area is 2¾" square with crossed lines ⅛" apart.
PopularScience_19410301_0138_003_0163.xml
article
209
209
Photography
[no value]
Wind-Tossed Trees Used in Amateur Movie Title
[no value]
[no value]
[no value]
[no value]
THE close of winter brings many opportunities to the amateur movie-maker. There seems to be action everywhere as life begins to stir with the impulses of spring. This is typified by the March winds as they whip flags about, toss the boughs, and make pedestrians bend picturesquely against the strong, chill blasts.
PopularScience_19410301_0138_003_0164.xml
article
210
210,211,212,213
Photography
[no value]
How to Develop Your Film
[no value]
[no value]
[no value]
KONRAD CRAMER
REAMS of paper have been covered with countless words . . . hundreds of books have been published on this subject . . . and every month new cure-all developers are recommended to the amateur photographer. This article will attempt to bring some order out of this chaos.
PopularScience_19410301_0138_003_0165.xml
article
214
214
Photography
[no value]
Transferring Photos to Glass and Other Materials
[no value]
[no value]
[no value]
KENNETH MURRAY
PHOTOGRAPHS can be transferred easily to glass, celluloid or plastics, wood, metal, cloth, or even eggshells with the aid of a package of so-called “stripping paper” or “tricolor registration paper.” This is sold for use in making natural-color prints and can be obtained at any large photographic supply house.
PopularScience_19410301_0138_003_0166.xml
article
214
214
Photography
[no value]
Corrugated Cardboard Keeps Photo Trays from Slipping
[no value]
[no value]
[no value]
[no value]
WHEN developing trays are rested on edge on a darkroom bench or worktable, they have an annoying habit of slipping and often become chipped when two or more fall together. A mat or rest that will prevent this can be made by giving a piece of corrugated cardboard several coats of lacquer to stiffen and waterproof it.
PopularScience_19410301_0138_003_0167.xml
article
215
215
Photography
[no value]
Photographs Neatly Mounted on Glass Without Frames
[no value]
[no value]
[no value]
J. H.
MANY an amateur photographer has tried to ferrotype glossy prints on glass and discovered to his dismay that they will not peel off. This adhesiveness can be used to good advantage in framing 5" by 7" glossy prints on 8" by 10" sheets of good quality glass, as shown at the left.
PopularScience_19410301_0138_003_0168.xml
article
215
215
Photography
[no value]
Edges of Photo Prints Colored to Give a Decorative Effect
[no value]
[no value]
[no value]
W. K.
SMALL photographic prints may be given a more-attractive appearance if the edges are coated with gold or silver bronze or tinted red or some other color with photographic water colors. Jog a number of prints together until the edges are even, then clamp between strips of wood as shown below.
PopularScience_19410301_0138_003_0169.xml
article
215
215
Photography
[no value]
Dry Powdered Pumice Stone Lightens Print Shadows
[no value]
[no value]
[no value]
E. V. B.
PRINTS in which the shadows are too dense can be reduced locally by rubbing with a bit of cotton and some powdered pumice stone. The method is also a good one for cleaning up degraded high lights. The powder is used dry, and the excess may be wiped away easily afterwards.
PopularScience_19410301_0138_003_0170.xml
article
216
216
Photography
[no value]
Rocking Film-Tank Agitator Made from Bread Pan
[no value]
[no value]
[no value]
HOWARD W. ROZELLE
THIS film-tank agitator may be made from a ten-cent bread pan and a nickel’s worth of light sheet metal. It is of the rocking type and operates from a water tap. A bread pan about 6" by 10" will do for film tanks of ordinary size. A partition cut from the sheet metal is soldered into the pan to form two compartments as shown.
PopularScience_19410301_0138_003_0171.xml
article
216
216
Photography
[no value]
Scale Weights Protected with Coat of Lacquer
[no value]
[no value]
[no value]
K. L. R.
AFTER a new darkroom scale has been in use for a short time, exposure to chemicals will cause corrosion of the weights, and in time the figures become hard to read. Clean the weights with steel wool and dust off any fine particles; then apply a coating of clear finger-nail polish or similar lacquer.
PopularScience_19410301_0138_003_0172.xml
article
217
217,218
Photography
[no value]
AMERICAN-MADE Miniature Camera
BIDS FOR WORLD SUPREMACY
[no value]
[no value]
[no value]
FEATURES never before available in any 35-mm. camera—even the most costly foreign models—are incorporated in a new camera with which America now bids for supremacy in the miniature field. Nothing has been overlooked to give amateur and professional photographers the utmost in precision, versatility, and all-around operating convenience.
PopularScience_19410301_0138_003_0173.xml
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219
219
[no value]
[no value]
Eastman Kodak Co.: KODAK SUPER-XX FILM
[no value]
Eastman Kodak Co.
KODAK SUPER-XX FILM
[no value]
[no value]
PopularScience_19410301_0138_003_0174.xml
advertisement
220
220
[no value]
[no value]
CASEIN COMPANY OF AMERICA
[no value]
CASEIN COMPANY OF AMERICA
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0175.xml
advertisement
221
221
[no value]
[no value]
NATIONAL CARBON COMPANY, INC.: "Eveready"
[no value]
NATIONAL CARBON COMPANY, INC.
"Eveready"
[no value]
[no value]
PopularScience_19410301_0138_003_0176.xml
advertisement
222
222
[no value]
[no value]
HASTINGS MANUFACTURING COMPANY: HASTINGS STEEL-VENT PISTON RINGS
[no value]
HASTINGS MANUFACTURING COMPANY
HASTINGS STEEL-VENT PISTON RINGS
[no value]
[no value]
PopularScience_19410301_0138_003_0177.xml
advertisement
223
223
[no value]
[no value]
FORD GOOD DRIVERS LEAGUE
[no value]
FORD GOOD DRIVERS LEAGUE
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0178.xml
advertisement
224
224
[no value]
[no value]
North Bros. Mfg, Co.: "YANKE" TOOLS
[no value]
North Bros. Mfg, Co.
"YANKE" TOOLS
[no value]
[no value]
PopularScience_19410301_0138_003_0179.xml
advertisement
224
224
[no value]
[no value]
Advertisement: Popular Science Monthly
[no value]
[no value]
Popular Science Monthly
[no value]
[no value]
PopularScience_19410301_0138_003_0180.xml
advertisement
225
225
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0181.xml
advertisement
226
226
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0182.xml
advertisement
227
227
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0183.xml
advertisement
228
228
[no value]
[no value]
CASEIN COMPANY OF AMERICA
[no value]
CASEIN COMPANY OF AMERICA
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0184.xml
advertisement
228
228,230
[no value]
[no value]
Advertisement: Popular Science Monthly
[no value]
[no value]
Popular Science Monthly
[no value]
[no value]
PopularScience_19410301_0138_003_0185.xml
advertisement
229
229
[no value]
[no value]
INDIAN MOTOCYCLE CO.
[no value]
INDIAN MOTOCYCLE CO.
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0186.xml
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229
229
[no value]
[no value]
J. H. WINN MFG. CO.
[no value]
J. H. WINN MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0187.xml
advertisement
229
229
[no value]
[no value]
WILSON MEM INDEX CO.
[no value]
WILSON MEM INDEX CO.
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0188.xml
advertisement
229
229
[no value]
[no value]
DELTA MFG. CO.
[no value]
DELTA MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0189.xml
advertisement
230
230
[no value]
[no value]
SMOOTH-ON MFG. CO.
[no value]
SMOOTH-ON MFG. CO.
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0190.xml
advertisement
231
231
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0191.xml
advertisement
232
232
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0192.xml
advertisement
233
233
[no value]
[no value]
Advertisement: POPULAR SCIENCE MONTHLY
[no value]
[no value]
POPULAR SCIENCE MONTHLY
[no value]
[no value]
PopularScience_19410301_0138_003_0193.xml
advertisement
234
234
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0194.xml
advertisement
235
235
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0195.xml
advertisement
236
236
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0196.xml
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237
237
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0197.xml
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238
238
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0198.xml
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239
239
[no value]
[no value]
Advertisement: SHAKESPEARE CO.
[no value]
[no value]
SHAKESPEARE CO.
[no value]
[no value]
PopularScience_19410301_0138_003_0199.xml
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239
239
[no value]
[no value]
Advertisement: THE FRANKLIN GLUE COMPANY
[no value]
[no value]
THE FRANKLIN GLUE COMPANY
[no value]
[no value]
PopularScience_19410301_0138_003_0200.xml
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239
239
[no value]
[no value]
Advertisements
[no value]
ATLAS PRESS CO.
NEW BENCH Milling Machine
ATLAS PRESS CO.
7" SHAPER
[no value]
[no value]
PopularScience_19410301_0138_003_0201.xml
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240
240
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0202.xml
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241
241
[no value]
[no value]
SYRACUSE GUILDTOOL COMPANY: Gulid Sander
[no value]
SYRACUSE GUILDTOOL COMPANY
Gulid Sander
[no value]
[no value]
PopularScience_19410301_0138_003_0203.xml
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241
241
[no value]
[no value]
L C SMITH & CORONA TYPEWRITERS INC
[no value]
L C SMITH & CORONA TYPEWRITERS INC
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0204.xml
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241
241
[no value]
[no value]
ALLIED RADIO
[no value]
ALLIED RADIO
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0205.xml
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242
242
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0206.xml
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243
243
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0207.xml
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244
244
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0208.xml
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245
245
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0209.xml
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246
246
[no value]
[no value]
MIDWEST RADIO CORPORATION
[no value]
MIDWEST RADIO CORPORATION
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0210.xml
advertisement
246
246
[no value]
[no value]
Advertisements
[no value]
E.C. ATKINS AND COMPANY
Compassand Keyhole Saws
E.C. ATKINS AND COMPANY
Coping Saws
[no value]
[no value]
PopularScience_19410301_0138_003_0211.xml
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246
246
[no value]
[no value]
Marble Arms & Mfg. Co.
[no value]
Marble Arms & Mfg. Co.
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0212.xml
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246
246
[no value]
[no value]
BRIKCRETE ASSOCIATES, INC.
[no value]
BRIKCRETE ASSOCIATES, INC.
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0213.xml
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247
247
[no value]
[no value]
Advertisements
[no value]
[no value]
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0214.xml
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248
248
[no value]
[no value]
SOUTH BEND LATHE WORKS: SOUTH BEND LATHE
[no value]
SOUTH BEND LATHE WORKS
SOUTH BEND LATHE
[no value]
[no value]
PopularScience_19410301_0138_003_0215.xml
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249
249
[no value]
[no value]
THE NTIONAL EDUCATIONAL ALLIANCE, INC.
[no value]
THE NTIONAL EDUCATIONAL ALLIANCE, INC.
[no value]
[no value]
[no value]
PopularScience_19410301_0138_003_0216.xml
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250
250
[no value]
[no value]
R. J. Reynolds Tobacco Company: CAMEL
[no value]
R. J. Reynolds Tobacco Company
CAMEL
[no value]
[no value]
PopularScience_19410301_0138_003_0217.xml