The Street railway journal (1904) (14575270028)

Identifier: streetrailwayjo241904newy (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



Text Appearing Before Image:
acket construction is used for the overheadwork, but on all double-track and at all sidingsand stations side poles with span wire are em-ployed. The poles are of extra fine cedar,some of them being 15 ins. to 18 ins. throughat the butts, while all tops are 8 ins. orover. They are 41 ft. long and are set 6 ft.in the ground. Practically all the poleswere cut on the timber lands along the line, while afew were even taken from the companys right of way.They are set on 100-ft. centers and are numbered con-secutively, so that distances may be easily measured and loca-tions readily reported by the train crews in case of damage tothe track or overhead work. The poles were set by means of top of the rails. Seven-strand jHs-in. galvanized wire is usedfor spans. The feeder cables are carried on a cross-arm justabove the bracket. At the top of the poles, 10 ft. above thetrolley, an 11,000-volt three-phase transmission line is run fromthe power house at Boring in each direction to the sub-stations
Text Appearing After Image:
FIG. 15.—EAGLE CREEK 95-FT. PILE TRESTLE at Gresham and Eagle Creek. The wires are of No. 6 soft-drawn copper, two wires being mounted on a 6-ft. cross-armand the third on the top of the pole. Cross-arms and pole-tops are treated with Carbolineum wood-preserving compound.Triple-petticoat glass Locke insulators of the Redland typeare employed with eucalyptus pins. There is very little light- Mr October 22, 1904.) STREET RAILWAY JOURNAL. 735 ning in this section, so no arresters are used, except in thepower houses. PRESENT POWER SUPPLYAs already mentioned, the Oregon City line is operated withrented power, while the Spring Water Division is run from asteam plant at Boring, which feeds rotary converter sub-sta-tions at Eagle Creek and Gresham. Another steam plant onthe companys terminal property in East Portland feeds intothe city lines of the system. This entire power supply is but atemporary one, with the exception of the two sub-stations, asthe company is building a large water-powe