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 299
g. 18 is a view of assembled field yoke, poles, and coils. Thefield coils are ventilated by being built up in sections with air spacesbetween the pole and the coil and also between sections of the samecoil. The coil is insulated from the pole by spacers and firmly heldin place by fiber insulated… … Fig. 19. Details of Type I Poles and Coils Courtesy of Allis-Chaimers Manufacturing Company The coils are impregnated at a high temperature with a com-pound rendering them moistureproof and oilproof. The armature isbuilt up of high grade steel laminations, well japanned, containingample radial…
Electrical engineering
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