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 237
Fig. 101. Type of Trolley Base end of which is drilled to fit over a swivel pin which forms part ofthe stand; a pole socket which is hinged at the lower end to the swivelarm on the pole socket axle pin—the pole socket also carries apair of cams to which flexible bands for transmitting the… … Fig. 102. Trolley Base with Ball-Bearing by the flexible bands to the pole socket and at the other end, throughan eye bolt and adjusting nuts, to the end of the arm; a buffer springto absorb the shock in case the pole flies up suddenly. The purpose of the cam which forms part of the pole socket…
Electrical engineering
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