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 85
etter to cut the main line shaft into short lengths and driveeach length by a single motor. In this case the jack shaft shouldnot be larger than can be supported by three shaft hangers; in fact,a considerable economy can often be effected by replacing the oldshafting with lighter material. In many… … Fig. 1. Characteristic Group-Drive InstallationCourtesy of Fairbanks, Morse & Company Choice of Motor. In specifying the proper operating speed formost economical production, machine tools may be considered intwo classes: (1) constant-speed tools, represented by reciprocatingmachine tools such…
Electrical engineering
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