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. . Fig. 173. Steel Pole Construction for High-Tension Circuit 294 ELECTRIC RAILWAYS 197 ing. The poles are reinforced with steel rods and the gains for the cross-arms are moulded in the proper positions. Steps are also moulded in the poles as climbing-irons would be useless in this case. Whi
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. . Fig. 173. Steel Pole Construction for High-Tension Circuit 294 ELECTRIC RAILWAYS 197 ing. The poles are reinforced with steel rods and the gains for the cross-arms are moulded in the proper positions. Steps are also moulded in the poles as climbing-irons would be useless in this case. While these poles are very heavy, they will undoubtedly prove durable and the results of the early installations will be watched with interest. Poles are set in theground 6 feet more or less,depending upon the heightof the pole and the charac-ter of the soil. Fig. 172, which repre-sents the construction of asingle-track interurban trol-ley road, shows plainlyat the left the constructionof the transmission 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 wdth sixinsulators, one three-phaseline being mounted on eachside of the pole. Steel structures forsup-porting transmission l
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Keywords: ., bookauthoramericantechnicalsoci, bookcentury1900, bookdecade1910
