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Page:Popular Science Monthly Volume 90.djvu/585

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Popular Science Monthly

��569

��Whiz, Whiz Goes This Electric Buzz- Saw as It Cuts Up a Beef Carcass

WHY shouldn't beef and other carcasses be cut up electrically, thought a California inventor, Frank F. Wear. So he invented a high-speed electric meat saw which saves t\vo thirds of a busy butcher's time.

Wear's saw is driven by a small electric motor mounted directly above the blade itself. The motor is geared to the saw, and rotates it while the butcher guides the apparatus over the carcass by a handle.

When a carcass has been placed on a cutting table, an electric button on the handle is pressed, whereupon the motor begins to spin. Xo sooner has the saw been brought down than it rapidh' imbeds itself in the carcass. It is carefully guided as it cuts through meat and bone, and in no time the carcass is severed.

��Regulating the Automobile Search- light by a Simple Push Button

AWESTERX manufacturer of auto- mobile searchlights has introduced an ingenious method of controlling the circuit to the lamp by means of a small push- switch similar to those installed in handles of electric vibrators, vacuum cleaners and tqpls. Heretofore it has been necessary to regulate the lighting of a searchlight either by means of a switch on the dash, which is somewhat inconvenient, or else by means of a loose plug extending from the lamp.

The new method makes it possible for the hand that moves the lamp in various

��The high speed of the saw enables it to cut through the carcass in a frac- tion of the time ordinarily required

���directions also to control the current simply by pushing buttons. When the light button is pushed the current is "on" and the lamp is lighted. When the dark button is pushed the current is "off."

The switch, sometimes called a "tool- handle" switch, has an insulating tube which is placed inside the small neck of the lamp. A sleeve of insulating fiber protects and separates it from the metal shell. The push buttons are placed in position after the switch is slid into the neck of the lamp.

���The lamp is operated by simply pushing the button. This makes it possible to swing the searchlight in any desired direction and to regulate the lighting at the same time

��Turning Out Helmets for the French by the Thousand

BY their "quantit>' production of hel- mets," the French are turning out fifty thousand helmets daily. Practically every operation, from cutting to painting, is performed by machinery. Each helmet is made from four pieces stamped from sheet steel. After the pieces are rivetted together, the helmets are sent to the painting room. Here machines are used to spray the paint on the hel- mets and in the crevices formed by the rivetted pieces. Then the lining and chin straps are made and adjusted.

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