AN EMERGENCY alarm system L developed by Berkley E. Cover, of Chicago, Ill., enables a call to be made for policemen or firemen, according to the emergency, from the same signal box. The sender of the alarm can talk into a microphone at the street signal box or, if too excited to talk, can send the alarm by turning dials marked "Fire" and "Police."
THE diversified chemical manufacturing industry of America is finding a way to make this country free from dependence on foreign sources for an increasing number of vital raw materials. Only a few years ago, America depended on the nitrate beds of Chile for fertilizers and raw materials for industry. Today, it makes its own nitrates from the air.
but now he's gained 21 POUNDS and new popularity Roy Rigby "At parties I felt like a back number. I was so skinny and my face was so broken out with pimples that none of the girls ever noticed me. On the advice of a friend I started taking Ironized Yeast. In 12 weeks I gained 21 pounds and my face began to clear up and take on a healthy color. I'm strong as an ox now and so popular that the fellows call me a 'Ladies' Man'." â€”Roy Rigby, De Kalb, ILL.
While we’re on the topic of Edison, what better way to memorialize him than with a giant light bulb. Edison Memorial Bulb Ready A GIANT electric light bulb, 14 feet high, which will surmount the $100,000 Edison Memorial Tower at Menlo Park, N. J., in commemoration of the invention of the incandescent lamp by the [...]
Bus Rider Wears Gas Mask LEADING a campaign to impress local bus operators with the need for some means of eliminating the monoxide fumes that produce headaches and cause passengers to suffer attacks of nausea, B. Palmer Davidson, of Montclair, N. J., wears a gas mask when commuting to his office. The mask is a [...]
Camera On Policeman’s Revolver Snaps Evidence ATTACHED to the barrel of a service revolver, a compact motion picture camera enables a policeman to take action pictures of any person at whom the revolver is aimed. The pictures thus obtained can be presented as evidence at court. The motion picture camera is triangular in shape and [...]
Best Support for Rupture Is the Human Hand The Brooks Appliance most closely resembles the human hand as a rupture support. Why worry and suffer with that rupture any longer? Learn about my perfected invention. It has brought ease, comfort and happiness to thousands who suffered from reducible rupture. It has an Automatic Air Cushion [...]
Family Of Three Travels In Home-Built “Cyclemobile” TWO bicycles joined together by means of a specially constructed frame and covered by a streamlined, water-proofed canvas hood, serve as a novel and cheap medium of transportation for A. Martin, of Dracutt, Mass. Dry batteries supply current to operate the front and rear lights of the “cyclemobile,” [...]
Power-Driven Timber Saw Has Stationary Blade A POWER-DRIVEN saw used to cut timber during the construction of a huge wood crib at Grand Coulee Dam in Oregon features a blade that actually stands still while the cutting process takes place. The “secret” of the novel saw is that the teeth run on an endless chain [...]
Little Dick Manley’s father, Dick Manley is the guy who gets a kick out of imprisoning cute little kittens in glass spheres. Three In Family Blow Glass A STREET shop in Los Angeles, Calif., displays glass-blown decorative objects created by three generations of artisansâ€” father, daughter and grandson. The grandson, Dick Manley, is only ten [...]
Device Bares Vocal Chords CONSISTING of an intricate maze of hidden mirrors in a long, slender metal tube, one end of which is inserted into the mouth far back toward the throat, an “auto-phonoscope” device enables voice teachers to peer at pupils’ vocal chords while they are in action. Tiny, but powerful, electric bulbs at [...]
“Stiltmobile” Aids Mailmen DESIGNED for use by rural mail carriers who must travel over roads which are frequently covered with heavy mud and snow, a new “Stiltmobile” is equipped with greatly enlarged wheels, elevated fenders and a specially designed body. The odd looking machine is said to travel 20 to 30 miles on a gallon [...]
by Prof. Victor Lewitus Make a strong soap solution by mixing shaving soap and water. After taking a puff on a cigarette, blow the smoke through a bubble pipe to make a soap bubble. The inside of the bubble then will contain the white smoke, and when it breaks, it does so with a puff, furnishing a very striking experiment. A clay or corncob pipe will be more suitable than the briar variety, inasmuch as the soap mixture probably will make the pipe unsuited for further smoking.
Eye Exerciser Apparatus Resembles Circus Wheel DESIGNED to strengthen eye muscles through exercise, a new apparatus invented by Dr. William I. Henry, of Akron, Ohio, resembles a carnival chance wheel in appearance. The device consists principally of a large rotating disc to which toy animals are attached in slots in such a manner that they [...]
Photo Lens Registers Rays Predating Dinosaurs BELIEVED by its makers to be the fastest in the world, a new astronomical photographic lens has been used at Mount Wilson Observatory in Pasadena, Calif., for taking pictures of light rays which, scientists claim, left distant stars before dinosaurs trod the earth. In conjunction with the 100-inch reflector [...]
Elevator Garage Stores Auto Under Lawn Of Home LACKING room to build a garage at the side of his home and being forbidden by city ordinance to erect one in front or at the rear, a suburban Londoner solved his problem by installing an elevator garage under the front garden. The elevator is electrically driven [...]
CAMERAS are constructed to be light-tight, and yet in order to make an exposure it is necessary to let light into the camera and onto the film. This requires a special mechanism called the camera shutter. It is so designed that when a release is pressed, it will move, let light into the camera for a moment or so, and then close and protect the film again from the light. As films have been made more sensitive and shorter exposures made possible, the design and construction of camera shutters has been improved until today there are shutters that split seconds into almost unbelievably small fractions and let light into the camera for just that fractional part of a second. Most of the smaller hand cameras with which we are familiar are fitted with one, or even both, of two types of shutters.
GLASS is one of the hardest and most brittle substances known to man. Yet comparatively simple but highly ingenious machines transform it into a soft, lustrous and flexible material which is woven into actual "cloth" on ordinary looms, as pictured above. Known as "Fiberglas," the new textile is not affected by temperatures as high as 700 degrees, is resistant to corrosive chemicals, does not absorb water, and is a highly effective electrical insulator. It promises to revolutionize old industries and create new ones as it goes into commercial, large-scale production for the manufacture of such things as cords, threads, ropes, tapes, webbings, filters, awnings, curtains, draperies, screens, wall coverings, table pads, doilies, pictures, etc. Although now available only in natural white, the glass cloth eventually will be offered in a wide variety of permanent colors for every decorative purpose.
by Donald G. Cooley YOU shoot through a winding tunnel streaked with colored lights, dive under a river, zoom up on the other side, fly past crowded platforms, sway dizzily as you dash around a curve at breakneck speedâ€”it's a crashing, flashing, thrilling scene that thunders past as you ride the subway express! Sightseers in New York soon discover the subway to be one of the city's miracles. For five cents they can ride for hours or for days on the world's most exciting underground railroad. When the American Legion held its big 1937 convention in New York, hundreds of Legionnaires stated that the big thrill of their outing came when they stood in the first car of a speeding subway train and found adventure around every curve.
Kiddies Taught Traffic Laws A MINIATURE roadway complete with signs, stop-and-go lights, crossings and safety zones is being used to teach pedestrian and auto traffic regulations to school children in Brentwood, England. The lessons are made interesting for the tots by letting them drive miniature autos over the “highway,” impersonate policemen, etc.
Tricks of the Composite Photograph by Paul Hadley THE making of composite, or combination photos, is one of the simplest branches of trick photography, yet is one which the amateur photographer seldom attempts. Easier by far than the double exposure or distorted perspective pictures, the results are more unusual and bizarre, in that parts of [...]
This is an awesome idea. When someone pulls the fire alarm, we’re going to handcuff them to that very spot. If they were stupid enough to pull a fire alarm some place close to, you know, a fire, well that’s their own fault. Fire Box Traps Pranksters THE sending of false fire alarms by mischievous [...]
YOU probably never saw a real live bird that looked like this one, but then you never saw a real live bird do what this one does. When you want a cigarette he bobs down and comes up with one in his beak, just like that. Unlike most trick cigarette boxes, this one won't be discarded very soon because you and your friends will never get tired of having cigarettes handed to you in this novel manner.
Belt Drive Replaces Wheels On Novel Motorcycle DEVELOPED primarily for operation over rough ground, a new type of motorcycle invented by J. Lehaitre, of Paris, France, features a tractor-type drive belt as its means of locomotion in place of conventional wheels. Named the “tractor-cycle” by the inventor, the novel vehicle is said to be superior [...]
THE reason that amateur glass blowing is such an interesting hobby is that the work acts as a stimulant to your creative ability. With very simple and inexpensive tools, in a corner of a room or in the attic or basement, you can quickly learn to make dozens of useful and ornamental pieces such as vases, small glasses of different shapes, beverage sippers and other articles of that nature. With further practice and experience you will not find it difficult to make the tiny animal, bird and flower novelties or "whatnots," which are so popular in the home, and know that the design is original and that a similar article cannot be purchased in the stores.
I love this ad. Apparently H.C. Lewis is so busy training the masses in electricity that he doesn’t have time for fancy typewriters or “ad men”. Nope, he just writes his ads by hand. Let me tell you about my Quick Easy Way to train for ELECTRICITY in 12 weeks If you want a better [...]