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 100
most presses,the constant-speed motor is required, preferably of the direct-currentcompound-wound type. Armature control is used only in startingand in turning the press at a very low speed while getting it readyfor the run. In color work, where a varying speed is required, anadjustable-speed motor… … Fig. 19. Electrotjping Plant Equipped with Spraguc Motors Courtesy of Sprdgue Electric Works
Electrical engineering
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