File:The Street railway journal (1902) (14574344310).jpg

Identifier: streetrailwayjo201902newy (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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xceedingly variable, the maxi-mum current per car being 30 amps,with sixty cars running. In othertowns, where the gradients are small,this does not exceed 15 amps, per car.There are grades of 1 in 9, and thesharpest curve is 30 ft. The trolley wire is of 00 sectionalarea, and the ears are hammered overthis, no solder being used. The polesare quite tasteful, as can be seen byreference to Figs. 11 and 12. The va-rious insulators have been supplied byEstler Brothers.; Macartney, McElroy& Company, and the Electric Tram-ways Equipment Company. Sectionboxes have been fitted at half-mile in-tervals, and feeder boxes where needed.These sectional and feeder boxes havebeen fitted up by the tramways depart-ment, and contain the necessary switches to divide eachsection of the line, lightning arresters, etc. Guard wire hasbeen erected to the requirements of the Postmaster-General,and is bonded to every fifth pole, itself being bonded bycopper bonds to the rail. Every section box and feeder box
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FIG. II.—VIEW SHOWING OVERHEAD CONSTRUCTION is also bonded to the rails. The guard wire in use is of No.8 iron wire galvanized. The aluminum wire has been usedas a trail, but did not give satisfaction. The rails were laid under the supervision of James Lord,A.M.I.C.E., borough engineer, and are of the steel girdertype in 30 ft., 45 ft. and 60 ft. lengths, the weight per linealyard is 95 lbs. The rails are laid on a bed of concrete 6ins. thick, and are connected by tie-rods 2 ins. x ^ in.every 10 ft. The angle-plates are six-holed and 60 lbs. in September 6, 1902.) STREET RAILWAY JOURNAL. 299 weight per pair. Anchor patent sole plates are also used,riveted to the bottom of each rail and let into concrete.The bonds are Columbia bonds. Spencers patent slipper brake is used on the cars inaddition to the ordinary hand brake. There are seventy cars at present in use, the equipments An Electric Railway to Connect Washington, Baltimoreand Annapolis The work of preparing the roadway of the W

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