Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)
American Technical Society · Chicago : American Technical Society · leaf 86
Fig. 2. Westinghouse Motor Driving Hilles & Jones Heavy Punch and Shear … Fig. 3. Westinghouse Motor-Driving a Niles Driving-Wheel Lathe Courtesy of Westinghouse Electric and Manufacturing Company tools by means of gear boxes or other mechanical speed-changingdevices. This arrangement, however, does not give as fine speed 71 6 MOTOR-DRIVEN MACHINERY gradations as can be…
Electrical engineering
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