. The street railway review . VIEW uf \U\\.\i .■.:...■ ......^ ..:.- AijRK. structure and the two trolley wires are supported by a span wirerunning under the bracket arm. There are about 10,000 lineal feet of single troughing. built of oak,fitted with expansion joints at intervals. This is supported every20 ft. on transverse girders by cleats and at intermediate points byspecial hangers attached to cross beams fastened to the longitudinalgirders. The trolley wire is No. 000 phono-electric type supportedevery 15 ft. by specially designed insulating hangers. As there is an expansion and cont
. The street railway review . VIEW uf \U\\.\i .■.:...■ ......^ ..:.- AijRK. structure and the two trolley wires are supported by a span wirerunning under the bracket arm. There are about 10,000 lineal feet of single troughing. built of oak,fitted with expansion joints at intervals. This is supported every20 ft. on transverse girders by cleats and at intermediate points byspecial hangers attached to cross beams fastened to the longitudinalgirders. The trolley wire is No. 000 phono-electric type supportedevery 15 ft. by specially designed insulating hangers. As there is an expansion and contraction of about 14 in. at eachanchorage a specially designed expansion joint has been devisedfor the trolley wire. This operates very satisfactorily, causes nosparking of the trolley wheel and requires no insulated section. Thejoint is 8 ft. in length. There are eight miles of overhead positive feeders and sevenmiles of negative return feeders along the track. These are allstandard weatherproof aluminum cables of 782,000
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
