. The Street railway journal . on with the rosetteswork effectively, by the use of gutta percha insulation, isshown by the fact that of the 4000 rosettes installed, notmore than thirty had to be removed, and this on accountof a change about to be made on the building or becausethe building itself passed into the hands of owners whowished them removed. The trolley wire is suspended 6 m (19 ft. 6 ins.) above the by means of the Schmidt half-lap fish-plate, in which 50 cm(20 ins.) of the angle-plate is countersunk into one-half therail-head at the joint. Since the beginning of 1898 theFalk cast r
. The Street railway journal . on with the rosetteswork effectively, by the use of gutta percha insulation, isshown by the fact that of the 4000 rosettes installed, notmore than thirty had to be removed, and this on accountof a change about to be made on the building or becausethe building itself passed into the hands of owners whowished them removed. The trolley wire is suspended 6 m (19 ft. 6 ins.) above the by means of the Schmidt half-lap fish-plate, in which 50 cm(20 ins.) of the angle-plate is countersunk into one-half therail-head at the joint. Since the beginning of 1898 theFalk cast rail-joint has been used on several portions ofthe road to a considerable extent, as has been described inthese columns. Besides the rails, nearly all the special work had to bereplaced. That at present is mostly of the made-up shortest radius of curvature is 16 m (53 ft.), the steep-est grade is 4 per cent. The underground conduit electric system is not in useat present on the road, nor is there a single instance of a. FIG. 4.—TYPES OF TUBULAR AND LATTICE POLES USED heads of the rails, but this distance is decreased to m(14 ft. 10 ins.), the smallest permissible height underbridges and railroad spans, as shown in Fig. 11. Thegreatest span within city limits was necessitated at theJannowitz bridge, where the distance from pole to pole is80 m (262 ft.). In Fig. 5 is shown the method of suspen-sion adopted in crossing the Colonnen bridge, the spanbeing 100 m (328 ft.) in length. The current is returned through the rails, which arebonded by means of copper in the usual manner adoptedby the Union Company, and specially laid cables. Thechange to electric traction necessitated the replacing of alarge number of rails, such as the Larson, and 13-cm (5-in.) Phcenix by rails of moremodern design. The standard rail used is of the Phcenixgirder type 160 mm (6| ins.) high, with central web 11 mm( in.) thick. The lip is only 15 mm ( in.) in width,and
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Keywords: ., bookcentury1800, bookdecade1880, bookidstreetrailwa, bookyear1884
