How to
Pretzel Bending Machine Solves Problem (Nov, 1936)

Pretzel Bending Machine Solves Problem

Accomplishing what once was considered as impossible for a machine, a new pretzel bender turns out 900 completely twisted pretzels per minute. It more than equals the work of fifteen expert pretzel-bending girls. The machine is an odd assembly of wheels, endless belts, air hose and electric motors, yet it handles pretzels with far more skill and speed than the best worker. Circle, top, machine at work. Center, pretzels ready for cooking. Bottom, expert worker bending pretzels by hand .

What’s Your Time? (Jun, 1932)

Time zones are of those interesting things that didn’t really matter to anyone before the invention of near instantaneous world wide communication.

What’s Your Time?

Where there is no Sunday in the week?
Where there are two Sundays in the week?
That there are 25 different kinds of Standard Time in the world?

SINCE radio made it possible to listen to people on the other side of the earth, we are becoming more “time-conscious”. To set the clock backward, or forward, for daylight time, or to set a watch on a train or bus journey might be mysterious, but it is not complicated.



by EARL THEISEN – Honorary Curator of Motion Pictures, Los Angeles Museum.

When the director calls for floods, train wrecks, and volcanoes, the miniature men create the scenes. Read how they produce these effects.

BEHIND the studio walls tucked off in a corner may be found the miniature department. It is hidden away where persons will not interfere with its work or find out its secrets.

To the miniature man everything is possible from the fabrication of airplane crashes, train wrecks, explosions, floods, to the bringing to life on the screen of prehistoric monsters. In this department of the studios is filmed those things that cannot be photographed or are too dangerous to be photographed in full size. The miniature men are specialists in reproducing literally on a table top practically anything that occurs in real life.

The Miracle of ICE from HEAT (Jun, 1939)

The Miracle of ICE from HEAT

Ingenious application of simple principle of physics turns the flame of a gas jet into ice cubes in the non-mechanical refrigerator.


TO THE average man there is nothing mysterious in mechanical refrigeration.

He knows that gases and vapors lose heat in expansion and that by a repeated cycle of compressions and expansions, confined gases can be cooled to an extent where they will operate as refrigerants. He knows that, in his domestic mechanical refrigerator, there is a motor and a pump which compress the refrigerant and that its repeated expansion in the coils in his box produces the cold that freezes his ice cubes and preserves his foodstuffs.

Maker Of The Maestro’s Wand (Aug, 1941)

Maker Of The Maestro’s Wand

It started as a joke, but Isaac Cary turned it into a business. Whether it’s symphony or swing, the odds are heavy that the leader of the band is using one of Gary’s custom-made batons.

by Lester David

APPLAUSE beats in waves through vast Carnegie Hall as the spotlight picks out the frail little man advancing to the conductor’s stand. He bows deeply and faces the orchestra, arms outstretched. In his hand he holds a slender, white, beautifully proportioned baton. A hush settles on the auditorium … he taps his stand twice, sweeps his baton upward and music flows into the hall. Arturo Toscanini is interpreting a master.

How Photographic Film Is Made (Oct, 1940)

How Photographic Film Is Made

“Mustard” plants and chemical “noodles” contain the elements that must be put into film base and emulsion before your camera can do its work.

PHOTOGRAPHY has wedged its way into our daily lives so securely that we do not view it with the alarm and mysicism people did when Daguerre announced the first successful photographic process one hundred years ago, in 1839. We have come to expect and accept the seemingly impossible with little exhibition of surprise or enthusiasm. This is, in many ways, unfortunate, for the real joy of science comes from knowing her intimately—knowing how she can make so few characters play so many parts, disguised outwardly but working inwardly to the same objective.

Avoiding Electric Shocks (Mar, 1936)

Avoiding Electric Shocks

While Making Electrical Repairs

THE home mechanic is usually not so well versed as he might be on electrical matters, and frequently receives an electric shock when attempting to replace burnt-out fuses, or making repairs on a defective lamp socket. Several safety hints here given will enable anyone to make their own general electrical repairs without danger.

Frequently fuses have to be replaced in basement cellars and, if you have a pair of rubber gloves, it is a good idea to wear them. If you are careful, however, and stand on a piece of dry board, or even on a dry folded newspaper, or wear a pair of dry rubbers, you can remove “blown” fuses and insert the new ones without receiving a shock through the body, due to contact through the shoes on a damp cellar floor.

How to Invent and Sell Money-Making Premiums (Jan, 1956)

How to Invent and Sell Money-Making Premiums

You can hit the jackpot with a giveaway gimmick if it’s simple, clever and appeals to the public.

By Bob Willett

SEVERAL months ago a salesman in Stamford, Conn., stepped up to the 15th tee of his favorite golf course and raised his driver. As he did, a business card fell from his shirt pocket and landed in a leaning position against his tee. Connecting with both ball and card, he was surprised to see the ball soar straight down the fairway—his first decent drive that day.

Experimenting later, he theorized that the card absorbed enough misdirected force to prevent hooking or ¦ slicing, then proved this conclusively with a flexible plastic tee of his own design. This answer to a divot-digger’s dream will soon be widely distributed as a giveaway gimmick and should prove to be one of the most popular products in the 104-year history of premium promotions.

Puzzling Zipper Fastener Is Really a Simple Device (Aug, 1930)

Puzzling Zipper Fastener Is Really a Simple Device
THE “Zipper,” long a popular fastening device for purses, sweaters, galoshes and other articles of similar nature, has remained a mystery to most of its users although, as the pictures here will show, the device is simplicity itself. The little wedge-shaped affair which appears to sew up or rip the article at will contains a scientifically shaped wedge which spreads the arms at just the right angle so they will release the socket from the arm below and opposite. Reversing the operation guides the knobs on the arms back into the tiny sockets where they hold firmly.



Here’s an easy, profitable, spare time job for several million Americans that can make the U. S. world’s largest silk producer.

by Roger Clay

HAVE you ever considered growing your wife’s silk stockings at home? Well, it can be done. That is, the silk thread can be produced at home, in your spare time, at very little expense—and it will pay you a nice profit.

John Ousta of New York City, a naturalized citizen of Turkish birth, with a 400-year family tradition of silk producing behind him, is convinced this country can make enough silk to meet the whole world’s demands. One-third of our farming population, raising only one ounce of eggs (30,000 to 43,000 worms) regularly in their spare-time, could do it! And a silk industry on that scale would employ a quarter of a million people in reeling factories alone.