Electrical engineer's pocket-book: a hand-book of useful data for electricians and electrical engineers (1901)
Foster, Horatio A. (Horatio Alvah), 1858-1913 · New York, D. Van Nostrand co.; London, E.& F.N. Spon, ltd. · leaf 548
system of railway may be said to use all thelatest methods, including wire-carrying conduits along side or under thetracks, as will be seen by the next cut. The porcelain insulator here shown for supporting the contact rails isvery substantial in design and construction, and by its location at a… … Fig. 94. Section of Conduit, Metropolitan Street Railway, New York. -Standard Work, 1897-98.
Electrical engineering
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