International Library of Technology · Scranton, International Textbook Co. · leaf 410
Fig. 46. 71. Pole Pieces.-—The motor has four poles providedwith flanged pole pieces that are laminated; the flanges serveto hold the field coils inplace, and the lamina-tions not only do awaywith a great deal of heatin the pole piece, butfrom the way in whichthey are built up, theyproduce a… … Fig. 47. 66 ELECTRIC RAILWAYS. 24 something like the full-line part of Fig. 47 (/^). The polepieces are built up of these plates, every other one of whichis turned end for end. The result of this manner of con-struction is shown in Fig. 47 (a), where, along the horizontalcenter part of the pole…
Electrical engineering
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