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 534
re supported in the single catenaryconstruction? Ans. By a/single messenger cable carried by the brackets,spans, or bridges. ELECTRIC RAILWA YS 2,625 Fig. 3,698, shows an example of 11 point bracket catenary construc-tion for a single track line. Fig. 3,699, shows the anchorage, for adouble track… … Pig. 3,700.—Bridge type single catenary construction for double track road. In this arrange-ment the trolley wire is suspended from a messenger cable supported on bridges spaningthe tracks and supported by towers on each side. This type of construction is seldom usedfor anything but the heaviest…
Electrical engineering
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