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 336
construction of asingle-track interurban trol-ley road, shows plainlyat the left the constructionof the transmission line.The same pole line in thiscase serves also to supportthe trolley brackets and tocarry the telephone lineused for dispatching. Inthis figure the upper cross-arms are provided… … X^\r .1r-?^/ii^r Fig. 174. Steel Tower with only Side Bracing wooden poles they usually must be placed at greater distances apart 295 198 ELECTRIC RAILWAYS in order to render their use economically practicable. Where woodenpoles are placed from fifty to thirty to the mile, towers may be placed from…
Electrical engineering
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