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 439
Fig. 14. Trolley Suspension Method for English Railless Sy.stem trolley and of the under-running bow features. On the negativeconductor we have two trolley wheels 12 inches apart carrying aC-shaped arm to which is connected the aluminum bow collector forthe positive wire. The upper and lower… … Fig. 15. Views of Trolley Pulley Showing Ring by Which Trolley Is Shifted from one another at A and B, Fig. 13. The springs H exert a pres-sure of about 32 pounds against the conductors and allow a limitedupward and downward motion of the bows. The whole device isfree to move a considerable…
Electrical engineering
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