International Library of Technology · Scranton, International Textbook Co. · leaf 439
alled the base, which is screwed to theboard or bridge and acts as a center around which the uppermember may turn; this lower member also receives the wirethat leads the current from the trolley stand to the control-ling devices. The upper member includes the socket^ thespringy and the devices for… … Fig. 8. receive one end of adjusting rods e^ e, the other ends ofwhich pass through cup castings d, d to receive adjustingnuts «, 11. On this form of trolley stand the pole may eitherbe rocked over independently or it can be swung around 25 ELECTRIC RAILWAYS. with the upper member in. Casting in…
Electrical engineering
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