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 349
closed. With proper windings they become adjustable speedmotors and are built for a speed variation of 5 to 1. In the last casethey are provided with commutating poles. Figs. 76, 77, 78, and 79are illustrations of these machines. This company also manufacturesmultispeed motors with two armature… … Fig. 80. Multispeed Double Commutalor Alotor for Printing Press WorkCourtesy of C & C Electric & Manufacturinq Company Crocker=Wheeler Company. The larger constant speed motorsof 50-horsepower capacity and larger are obtained by this companyby using the same frames as for their form H…
Electrical engineering
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