The Street railway journal (1902) (14574894000)

Identifier: streetrailwayjo191902newy (find matches)
Title: The Street railway journal
Year: 1884 (1880s)
Authors:
Subjects: Street-railroads Electric railroads Transportation
Publisher: New York : McGraw Pub. Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries



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ame length of time. In a mild climate, where thestreets are kept clean and the superintendent can keep acareful watch upon his men and bring them up to a highstandard, wheels will have a longer life than is possibleunder other conditions. Costs will be correspondingly re-duced. Trolley Wire Hangers Used at Minneapolis A peculiar form of trolley wire hangers has been used bythe Twin City Rapid Transit Company, of St. Paul andMinneapolis, for a number of years, a sketch of which isshown herewith. This hanger was designed in the firstplace to avoid the excessive breakage common with the old-fashioned rigid hangers used on bracket construction. Thehammering of a trolley wheel against a trolley wire insu-lator rigidly fastened to the bracket of the center pole causedmuch trouble from breakages in the earlier days on this roadas it has on all others. As seen from the sketch, the presenthanger consists of two clips mounted on the ends ofa wooden stick i-f ins. square. The stick serves as the
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FLEXIBLE TROLLEY WIRE HANGER insulator. The clip castings are driven on to the ends ofthis stick and a split pin put through to keep the castingfrom slipping off. The stick is suspended from the bracketor span wire, as the case may be, by a square link which fitsso loosely over the stick that it can move back and forththrough the link. This movement, however, is limited to 3ins. by split pins located as shown. This movement allowsthe strain on the trolley wire to equalize itself, which is avery valuable feature in preventing the breaking and tip-ping of insulators. As the blow of the trolley wire comeson the end of the insulated stick, which is 5 ins. from theactual point of suspension at the bracket, there is not asrigid a blow as with the old-fashioned hanger, because oneend of the hanger can tip up slightly to cushion the blow.The wood is also likely to be less brittle than the insulatingcompound used in the ordinary hanger. This hanger gavesuch good satisfaction on bracket center-