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 238
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… … Fig. 103. Bail-Bearing of Fig. 102 in Detail as the pole rises toward a vertical position. The nearer the pole isto this position the greater is the torque required to produce thedesired vertical pressure of the wheel on the wire. The reason formounting the arm on the swivel pin is to allow the…
Electrical engineering
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