. The Street railway journal . one span,and 150 ft. long. If the distance were greater several hangerswould be necessary to support the trolley wires. These trolleywires should be insulated at each end of the runway with No. 2 J 1 XIG. 1.—METHOD OF SUPPORTING TROLLEY WIRES porcelain insulators, as shown in Fig. i, ana some methodemployed to take up the slack in the wires. This may beaccomplished by means of ^-in. bolts, as shown in the cut, orturn buckles may be used for the purpose. The angle-iron is2 ins. X ^ in. fastened to wooden posts by means of coachscrews. The trolley wires are 4 ins.
. The Street railway journal . one span,and 150 ft. long. If the distance were greater several hangerswould be necessary to support the trolley wires. These trolleywires should be insulated at each end of the runway with No. 2 J 1 XIG. 1.—METHOD OF SUPPORTING TROLLEY WIRES porcelain insulators, as shown in Fig. i, ana some methodemployed to take up the slack in the wires. This may beaccomplished by means of ^-in. bolts, as shown in the cut, orturn buckles may be used for the purpose. The angle-iron is2 ins. X ^ in. fastened to wooden posts by means of coachscrews. The trolley wires are 4 ins. apart. When making adjustments of these wires it is a good plan toopen the service switch beforehand. Do not get the wires closeenough to swing against the car rail when installing, nor toonear the floor to admit of their trailing should the wires getslightly slack. Indeed, considerable slack is permissible, andin some cases necessary to secure a good contact in the slidingshoes, which arc to take off current for the ,4 X 2 Fibre Sircef Rnihru// Journal FIG. 2.—TRAILER UNDER CAR PLATFORM The trailer, shown in Fig. 2, is secured below the car plat-form where nothing can strike it, and yet it is accessible forinspection. The angle-iron is J4 in. thick, 2 ins. wide, and isfastened to the car frame with ^-in. x 6-in. lag screws. The sliding contacts are of hard brass. They are spaced4 ins., center to center, and secured by means of two ^-in. xij^-in. cap screws to the insulated base, which is preferably ofJ^-in. X 2-in. fiber. The fiber is secured to the angle supportby means of 5^-in. x i^-in. cap screws. The section of theangle-iron to which the fiber is secured is i in. x i in. Onebolt each is sufficient to secure the part firmly. The sliding brass contact is 2 ins. long, 1J/2 ins. high, ^ , and a depth of groove of ^ in. Round the groove, fromtime to time, as the trollev wire wears its wav into it. Make a tight fit on the cap screws, using iron washers under
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
