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 453
Fig. 8. Section of Track and Overhead Construction in Broad Streets,showing Double Overhead Wires and Underground Feeder Conduits. … Section of Track and Overhead Construction in Narrow Streets,showing Overhead Pipe Brace. Trolley Suspension for Havana Streets, as developed byF. S. Pearson. SIDE BRACKETS. 441 of an eye-bolt that is long enough to pass through the pole at a point fromtwelve to eighteen inches below the top, and…
Electrical engineering
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