International Library of Technology · Scranton, International Textbook Co. · leaf 225
The metal castings for overhead fittings are made eitherof malleable iron or brass. The ears when soldered are §22 ELECTRIC RAILWAYS. made of brass; those designed to clamp on the wire areusually made of malleable iron. Fig. 8 shows four styles of ears intended for soldering tothe trolley wire.…
Electrical engineering
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