File:Electric railway review (1906) (14780890863).jpg

Identifier: electricrailwayr18amer (find matches)
Title: Electric railway review
Year: 1906 (1900s)
Authors: American Street and Interurban Railway Association
Subjects: Street-railroads Electric railroads
Publisher: Chicago : Wilson Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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of way varies three miles. An accompanying engraving exhibits the dimensions ofthis companys standard two-track roadway. The track railsare electrically connected by Brown bonds, having an amalgamcontact with a conductivity equal to No. 00000 copper. The August 31, 1907. ELECTRIC RAILWAY REVIEW 147 rails of each track are cross-bonded at intervals of 500 feetand the two tracks are cross-bonded every 1,000 feet. Accom-panying halftone engravings show the character of the trackon various divisions of the system. Pole-Line Construction. amount of from 7 to 10 gallons per hole. The oil is well mixedwith the dirt as it is tamped about the pole and this mixtureserves to preserve the wood by keeping away moisture andinsects. The oil used costs about 7.5 cents per barrel. Poleswhich were protected by this method and have been in servicemore than five years exhibit no signs of decay. The trolley wires on the Covina line will be fed from two On the Covina line the two Xo. 0000 Figure 8 trolleys
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Pacific Electric Railway—Glendale Station and Office. substations located 7 and 18 miles, respectively, from thepower station in Los Angeles. An accompanying engravingreproduced from a line drawing shows the detail constructionof the pole tops supporting the three-phase high-tensiontransmission line and the trolley brackets. The transmissionpressure is 15.000 volts, and No. 000 hard-drawn copper wiresare used, mounted on Lima porcelain insulators 7 inches are tapped at intervals of five poles to a 600,000-circular milfeeder cable connecting the substations. The telephone wireswhich are carried on the same pole are mounted not on theordinary glass insulators, but on standard No. 1 Prove high-tension insulators which were available on account of a changein the transmission line on one of the older divisions. It will be noted by reference to the illustration of the

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