. The Street railway journal . on straight track are spaced with16 ins. open space between them, regardless of the widthof the tie, which method of spacing is preferred because auniform amount of bearing surface is obtained, irrespectiveof the size of the ties. Curves are laid with hewn oak ties,and on sidings sawn oak ties were used. POLE LINKS AND OVERHEAD CONSTRUCTIONThe catenary trolley construction for the new work iscarried on brackets from a pole line consisting of poles. All of the poles are set 7 ft. in the ground i6o STREET RAILWAY JOURNAL. [Vol. XXX. No. 5. with about 8
. The Street railway journal . on straight track are spaced with16 ins. open space between them, regardless of the widthof the tie, which method of spacing is preferred because auniform amount of bearing surface is obtained, irrespectiveof the size of the ties. Curves are laid with hewn oak ties,and on sidings sawn oak ties were used. POLE LINKS AND OVERHEAD CONSTRUCTIONThe catenary trolley construction for the new work iscarried on brackets from a pole line consisting of poles. All of the poles are set 7 ft. in the ground i6o STREET RAILWAY JOURNAL. [Vol. XXX. No. 5. with about 8 in* of concrete around the butts. The polesetting was described by Mr. Simmons at the Columbusmeeting of the American Street and Interurban Railway As-sociation. Before the concrete has set a wood ring about The brackets and all of the fittings and hangers for thecatenary construction were designed by the company andmanufactured in its shops. The brackets are of 2-in. gal-vanized wrought-iron pipe. By means of a socket at the. STEADY STRAIN CLEVISWVLLEA8LE IRON Street Ity. Journal BRACKET ARM AND FITTINGS FOR CATENARY CONSTRUCTION il/2 ins thick and 3 ins. deep is placed around the pole atthe top of the concrete. The surface of the concrete isthen dressed up smooth and after the concrete has set the pole end they are secured to the pole by two J/S-in. x screws. The outer end is supported by a 5/16-in. guywire bolted to the pole a few feet above the bracket. For I o
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
