Holdups Thwarted by Burglar Trapdoor (Oct, 1931)
Sadly, there are all too few surprise trapdoors remaining in operation today.
Holdups Thwarted by Burglar Trapdoor
IMPRISONING bank burglars by suddenly opening up a yawning pit at their feet is the somewhat unique and highly effective means which a recently invented burglar trap employs to nip holdup schemes in the bud.
When a thief walks up to a cashier’s window and orders all hands elevated, the bank employee simply reaches down â€” very quickly, of courseâ€”and pushes a lever, which operates a trap door before the window. The bandit falls through the door and into the steel-walled cage below. He is ordered to hand out his arms and then turned over to the police.
The trap door in the floor is adapted to be dropped from a normal position, at the same time sliding back the top of the cage as illustrated in the accompanying diagram. When weight is removed the top automatically slides back to cover the cage.
World’s First Color Fax Machine – 1946 (Nov, 1947)
This is a pretty remarkable invention for it’s time. A color, plain paper, fax machine from 1946 that used colored pencils to print the output. The resulting image looks a lot like a printout from my first color inkjet printer. Sending a 7×10″ picture in full color took about 15 minutes, which seems pretty damn reasonable to me.
Tune In a Painting
PSM photos by Hubert Luckett
TAKE a good look at the front cover of this issue of your Popular Science Monthly. You are looking at something you have never seen beforeâ€”a picture that was transmitted by radio in one operation and imprinted on a sheet of ordinary paper.
This is known as color facsimile. It is the product of years of effort to transmit an image by wire or radio and reproduce it perfectly on ordinary paper at the receiving point. It was developed by Finch Telecommunications. Inc., of Passaic, N. J. Finch labels it “Colorfax.”
Sensational THRILL RIDES Invented for N.Y. World Fair (Apr, 1939)
“one smart inventor has devised a ship that takes passengers to Venus, which is part of the way to the moon”
Wow, I had no idea Venus was so close!
And don’t forget: “These are no sissy rides, and if it’s a thrill you want, you’ll get it at the New York World’s Fair!”
Sensational THRILL RIDES Invented for N.Y. World Fair
HOW would you like to experience the thrill of a parachute jumpâ€” without the accompanying dangers of the ‘chute failing to open, of being blown out to sea or of landing in a tree? Well, that thrill will be yours if you are one of the lucky 60,000,000 expected to visit the New York World’s Fair after it opens on April 30. As a matter of fact, a safe parachute jump will be only one of the many sensations ingenious engineers have invented for the Fair visitor’s amusement. If the ‘chute jump seems tame, try the aerial ship which the rider can pilot himself. It’s safe, of course, because a cable keeps the ship anchored to a revolving pole, but you can turn or stall in a steep climb or experience the sensation of a power dive, if you are up to it.
LATEST BOATING SPORT… Sailing Midget Ships (May, 1938)
These are really cool. I love the idea of making scale models that you can actually sail around in.
LATEST BOATING SPORT… Sailing Midget Ships
By ARTHUR A. STUART
AMATEUR boat builders in many parts of the world are going down to the sea in midget ships. They are putting off in men-of-war, square-rigged traders, ocean liners, and superdreadnoughts barely larger than rowboats, yet reproducing in every detail ships that are famous in nautical history.
Eyeglasses for Dogs (Apr, 1939)
There is actually a company called Doggles that sells prescription eyewear for your dog.
Eyeglasses for Dogs
BY MENTIONING that her dog seemed nearsighted, a girl customer started an optician of Geneva, Switzerland, on his way to becoming a specialist in fitting canines with glasses. Not only did he succeed in curing her pet, but now he has found a novel and profitable career in applying his newly discovered methods to other four-footed subjects.