. The Street railway journal . 1894.] THE STREET RAILWAY JOURNAL. 763 pany, of St. Louis, and other improvements are beingmade. A new car home and stable is being erected on theEast Washington line. Rock Creek Railway, of the District of Columbia. The lines of this system, which embrace about eightmiles of double track, lie mostly outside of the city limits,and are operated by electric power. The extension withinthe city limits is one and five-eighths miles, and this por-tion is operated by the Love electric conduit system. Thetrolley wires of the remainder of the line are supported oncenter i
. The Street railway journal . 1894.] THE STREET RAILWAY JOURNAL. 763 pany, of St. Louis, and other improvements are beingmade. A new car home and stable is being erected on theEast Washington line. Rock Creek Railway, of the District of Columbia. The lines of this system, which embrace about eightmiles of double track, lie mostly outside of the city limits,and are operated by electric power. The extension withinthe city limits is one and five-eighths miles, and this por-tion is operated by the Love electric conduit system. Thetrolley wires of the remainder of the line are supported oncenter iron poles for the most of the distance, woodenpoles being employed on the suburban extension. Thepresent suburban terminal of the line is at Chevy Chase,Md., but an extension of two and a half miles is now beingconstructed to Kingston on the Baltimore & Ohio Rail-road. About twenty cars are regularly operated, and theseare run on a fifteen minute headway. On Sundays andholidays the headway is reduced to seven minutes. The. FIG. 12.—SECTION OF TRACK EQUIPPED WITH ELECTRO-MAGNETIC SYSTEM IN COURSE OF CONSTRUCTION. cars are equipped with trolley poles and are also pro-vided with mechanism for operating over the conduit sec-tion. At the junction of the overhead with the under-ground section pits are provided in each track in which anattendant takes position as the car approaches from eitherdirection. In changing from overhead to undergroundthe trolley pole is pulled down and fastened, and theattendant inserts the underground trolley in a socket pro-vided for it in the truck. This trolley or plow consists oftwo flat metal plates bolted together. It is half an inchin thickness, four inches wide and two in length, and toits lower portion are two underrunning trolley wheelselastically attached. The conductors in the plow consistof insulated copper ribbons enclosed between the platesand terminating in two copper bars sunk flush with theedges of an insulating cap on the plow at its upp
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