. The Street railway journal . STANDARD CLOSED CAR curve, but the reverse curve has a 34-ft. radius. This wasnecessary to round a shorp corner into a very narrowstreet. OVERHEAD CONSTRUCTION Tubular poles, 28 ft. long, and weighing 700 lbs., andspaced 90 ft. apart, are used throughout. The overheadappliances are of the Dirigo type, and the trolley wire isNo. 00. Four feeders, each of 500,000 cm., run from the. CURVE AT TOP OF AN I r PER CENT GRADE heavy traffic rails, a short distance away; the remainingwire is connected into the Upper Town rails. The objectof the latter is to reduce the drop
. The Street railway journal . STANDARD CLOSED CAR curve, but the reverse curve has a 34-ft. radius. This wasnecessary to round a shorp corner into a very narrowstreet. OVERHEAD CONSTRUCTION Tubular poles, 28 ft. long, and weighing 700 lbs., andspaced 90 ft. apart, are used throughout. The overheadappliances are of the Dirigo type, and the trolley wire isNo. 00. Four feeders, each of 500,000 cm., run from the. CURVE AT TOP OF AN I r PER CENT GRADE heavy traffic rails, a short distance away; the remainingwire is connected into the Upper Town rails. The objectof the latter is to reduce the drop in the rails, as there areonly two single-track lines connecting the Upper andLower Town lines. The following is a list of the longest grades over 8 percent, over which the cars operate. Ninety feet of per cent, with a 40-ft. radius curveat the top, half on the hill; station, which is approximately in the electrical center ofdistribution. Lightning arresters of the Wurts non-arcingrailway type are situated on the poles wherever the feederstap the trolley. At one point, where the railway crosses a drawbridgespanning the St. Charles River, which is navigable forsmall ships, it became necessary to place the feeder eitherunder the river or at such a height that it would clear themasts of all passing ships. The latter course was adopted, 5oo STREET RAILWAY JOURNAL. [Vol. XV No. 8. and two poles, each
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
