Hawkins electrical guide ... : questions, answers & illustrations : a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications ; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833-1928 · New York : T. Audel & Co. · leaf 532
l by a safe margin. according to the method employed for suspending the trolley wire, 1. Bracket construction; 2. Span wire construction. ELECTRIC RAILWAYS 2,62S In both classes, the trolley wire may be supported eitherdirectly from the insulators carried by the brackets or spans,or from a steel… … Vn.\. 3,698.—Eleven point bracket catenary construction for single track. The bracket type ofconstruction is the cheapest and is the one generally used for ordinary interurban service.On double track lines the poles carrying the brackets are placed on each side of the right ofway. for direct…
Electrical engineering
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