. The Street railway journal . Trolley wheels, trolley harps and journal bearings aremade in the companys own brass foundry. Trolley ears14 ins. long cost 16^ cents apiece. Armature bearings havea composition of 80 per cent copper, 12 per cent lead, and4 per cent each of phosphorus tin and pig tin, and show alife as high as three years. The journal bearings are boredin special design jig, which bolts on to the carriage of alathe, using a boring bar with four cutters, viz.: A cutterat each end for facing the ends of brasses, a roughing cut-ter, which roughs out the work, and a finishing cutter,
. The Street railway journal . Trolley wheels, trolley harps and journal bearings aremade in the companys own brass foundry. Trolley ears14 ins. long cost 16^ cents apiece. Armature bearings havea composition of 80 per cent copper, 12 per cent lead, and4 per cent each of phosphorus tin and pig tin, and show alife as high as three years. The journal bearings are boredin special design jig, which bolts on to the carriage of alathe, using a boring bar with four cutters, viz.: A cutterat each end for facing the ends of brasses, a roughing cut-ter, which roughs out the work, and a finishing cutter,. CIRCULAR CRANE IN ROSE AVENUE SHOPS complete, $18. The company believes thoroughly in theuse of fenders, and that they save many lives and seriousaccidents. One interesting case on record is that of a RACK FOR WINDING ARMATURES which sizes the brass. With this arrangement it is notnecessary to caliper the brasses, except when setting thecutter; one setting of the finishing cutter will bore some- September i, 1900.] STREET RAILWAY JOURNAL. 793 times as many as fifty bearings before needing sharpening. The companys standard for new track and roadbed con-struction is 74-lb., 8-in. T-rail, laid on oak ties. The tiesare laid on a bed of broken stone, which is also tamped inbetween up to within about 2 ins. of the tops of the a layer of cheap concrete, flush with the tops of the formation which a manager would want in as concise aform as possible, and in a way which would require but asmall amount of work to keep up. The record is dividedinto two sections: The first shows straight
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Keywords: ., bookcentury1800, bookdecade1880, bookidstreetrailwa, bookyear1884
