File:The Street railway journal (1907) (14574879440).jpg

Identifier: streetrailwayjo291907newy (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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apart. Thefact that the road was built alongside the highway made itadvisable to put the poles all on that side of the trackopposite the highway in order to reduce the liability ofpeople coming in contact with them. The higher poleswere used to carry the high-tension lines through the towns.The overhead construction is that of the Ohio Brass Com-pany. On straight track the T iron brackets are 10 ft. long,but on curves with poles on the inside they are i ft. 3 ins.longer in order to align the trolley properly. The messen-ger is supported on a triple petticoat, Locke No. 3 insulatorbolted above the bracket and the No. 0000 trolley wire issupported from the messenger by hangers placed 10 ft. apart.At the center of the span the hangers are 7 ins. long, whilethose nearest the brackets are 18 ins. in length. At intervalsof 54 niile and at each end of curves the trolley is braced bybridles. At these points the messenger passes under thecross-arm and is supported by a short span wire between
Text Appearing After Image:
TROLLEY CONSTRUCTION ON CURVES, SHOWING BRIDLEIN THE FOREGROUND two insulators placed underneath the arm. The trolley isalso secured direct to the insulators. On curves where thepoles are on the inside the trolley is pulled away from thepoles by a short guy attached to an insulator placed under-neath the end of the bracket. Where the poles are on *heoutside of the curve the same construction is employed, ex-cept that the insulator is placed between the pole and ,;cmessenger. Through Decatur a potential of 500 volts a. c.is employed on the trolley, and in Fort Wayne the potentinis 550 volts d. c. At each end of the line where the chai i; ■ April 27, 1907.) STREET RAILWAY JOURNAL. 717 from 6600 volts is made in the trolley potential there is aninsulated section of trolley about 200 ft. long. By meansof switches placed in boxes on poles near each end, the in-sulated section at Fort Wayne may be connected to eitherthe high-tension a. c. or to the d. c. circuits and the sectionat Decatur

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