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 252
1-1O O H >>-) p:iMO ^^ en e o O a, 1^ -5H S O § Si 2o ELEVATORS 169 MODERN TYPESInterpole Motors. For variable speed elevators a type calledthe Interpolar JVlotor is now in general use. This motor, as itsname would indicate, is a direct-current motor with additional polesand field windings… … Fig. 123. Interpole Motor Field Ring and Coil Courtcxy of Electro-Dynamic Company which feeds the motor and consisting of one continuous wire, one endof which is connected with the line and the other end with one of thearmature leads. Current flowing in these windings energizes theinterpoles, thus…
Electrical engineering
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