. The Street railway journal . , plus 15ft., allowed for splices and location of manholes was also given,with respect to the intersecting streets,the cable reel being numbered to cor-respond with distances when cables, with the exception of thoselengths lying in conduits subject to tidewater and the armored cables crossingthe Harlem River, have paper insulationwrapped in jute with a heavy lead three conductors of each cable arebuilt up of nineteen single copper wireseach, forming a strand approximately15-32 in. in diameter, or a oooo-wireB. & S. gage. The wat
. The Street railway journal . , plus 15ft., allowed for splices and location of manholes was also given,with respect to the intersecting streets,the cable reel being numbered to cor-respond with distances when cables, with the exception of thoselengths lying in conduits subject to tidewater and the armored cables crossingthe Harlem River, have paper insulationwrapped in jute with a heavy lead three conductors of each cable arebuilt up of nineteen single copper wireseach, forming a strand approximately15-32 in. in diameter, or a oooo-wireB. & S. gage. The waterproof cableshave rubber insulation substituted for thepaper. The Harlem River cables arecovered on the outside of the lead sheathwith two windings of steel ribbon woundin opposite directions, This ribbon isI-16 in. thick and 2 ins. wide, andwhen applied to the cable forms a complete coat of steelarmor averaging nearly % in. in thickness, and making acable 2iH iS- in diameter, which is nearly twice that -3-2- Channel Bars. Section A-B Cable Hangers for ManholesFIG. 4.—DETAILS OF CHANNELS AND HANGERS of the ordinary cable. The distance between bulkheadlines at the cable crossing was 503 ft., while the contourof the bottom called for a length of 581 ft., and the allowancefor splicing, anchorage in manholes, etc., increased this lengthto 600 ft. To add to the difficulties of pulling the river cables,a city water main was encountered, crossing the cable channeldiagonally at a point 60 ft. from the north bulkhead and at a January 3, 1903.] STREET RAILWAY JOURNAL. 17 depth of only 15 ft. below low water. This required that notonly the cables themselves but the tow-line as well must bepassed under this pipe, and necessitated the anchoring of afloat carrying a diver and apparatus over the pipe and havingthe diver pass the ends of the line and cables under it. Thecables were pulled across by means of a tugboat and a smallsteam winch, used in conjunction with the companys coalhoisting
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
