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. 



