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 508
consist of a single piece ofporcelain, and can be easily detached from the frame when necessary.The contact fingers are flared, are of copper, and are fastened to thestuds by heavy springs which insure good contact with the movingblades. The oil tanks are of sheet metal lined with maple, and are… … Fig. 3S3. Westinghouse Three-Pole Oil Circuit Breaker—Ileuiutc Cuutrul (a) directly on panel; (b) on pipe framework directly back of panel; (c) on pipe framework remote from panel; or (d) on flat surfaces or in cells remote from panel. These switches are made single-throw with one, two, three,…
Electrical engineering
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