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 351
ry Type Catenary Construction. The ordinary span wire and bracketconstruction already described supports the wire at points 100 feetmore or less apart and between the points of support, the wire sags 307 210 ELECTRIC RAILWAYS considerably. This is very objectionable in high speed work as thetrolley… … Fig. 199. Catenary System on Taght Brace Construction The catenary trolley-wire support has been developed to over-come this difficulty. As mentioned briefly before this system com-.prises a steel messenger wire securely mounted on insulators. Fromthe messenger wire, the trolley wire hangs by…
Electrical engineering
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