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 149
ating material. Field Pole-Cores and Coils. The four field pole-cores projectradially inward from the frame, each at an angle of 45 degrees fromthe horizontal. Each is attached to the frame by two bolts. Each 125 30 ELECTRIC RAILWAYS core consists of sheet-steel punchings riveted together between… … Fig. 32. Westinghouse Railway Motor—Lower Field Down into a shoe which forms a support for the field coil and at thesame time serves to increase the pole surface. The field coils are wound of copper strap insulated with asbes-tos and mica and thoroughly taped. Oiled duck is also used tofurnish good…
Electrical engineering
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