. The Street railway journal . and where there are a numberplaced side by side. The method adopted in the present in-stance was to leave the last 20 ft. or 30 ft. of each length ofcable unlaid until the end had been jointed to the nextlength of cable to be laid in the same trough. The ends ofthe two cables to be jointed were laid on a temporary plat-form placed over the trench and protected by a jointerstent, or by a special arrangement of tarpaulins where theclearance was limited, and all jointing was done where therewas ample room, and things could be kept clean. Wherethe cables were laid th
. The Street railway journal . and where there are a numberplaced side by side. The method adopted in the present in-stance was to leave the last 20 ft. or 30 ft. of each length ofcable unlaid until the end had been jointed to the nextlength of cable to be laid in the same trough. The ends ofthe two cables to be jointed were laid on a temporary plat-form placed over the trench and protected by a jointerstent, or by a special arrangement of tarpaulins where theclearance was limited, and all jointing was done where therewas ample room, and things could be kept clean. Wherethe cables were laid through the subway underneath themain lines between Wesbourne Park and Royal Oak, thelength of cable were so arranged that the joints came op-posite the refuges provided in the walls of the subwaywhere the jointing could be done with safety. TRACK WORK As has been explained above, the system adopted for sup-plying current to the train-collecting shoes is the same asthat already in use on the Metropolitan and District ATTACHING BONDS WITH HYDRAULIC PRESS There are two insulated conductor rails, the positive being3 ins. above rail level and 16 ins. outside the running rail,and the negative conductor being 1J/2 ins. above rail leveland in the center of the track. The two conductor railsare of an inverted channel section, resting at intervals notexceeding 10 ft. on iron-capped porcelain insulators. Theinsulator is fixed to the tie by small clamps and coach screws. This design leaves the conductor rail and insu-lator free to move up and down relatively to each otherwhen trains are passing, owing to the spring in the tie andin the roadbed. The rails, which are 44 ft. 6 ins. long, weigh yard and have a cross-sectional area of 10 sq. ins. They
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
