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 82
gaps as indicated inFig. 68, being an extension of the above idea. (3) To make the for- ward horn of the pole-shoe of cast iron, and therear horn of cast steel.In this case the joint isoblique, as indicated inFig. 69. (4) Concentration ofField. Sparkless commutation may also be accomplished if… … Fig. 69. Pole-Piece Horn of Iron and Steel
Electrical engineering
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