File:Montreal Park and Island Railway Image from page 198 of "Electric railway gazette" (1895) (14761065425).jpg

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Identifier: electricrailwayg13newy Title: Electric railway gazette Year: 1895 (1890s) Authors: Subjects: Electric railroads Publisher: New York : [W.J. Johnston Co.] Contributing Library: MIT Libraries Digitizing Sponsor: MIT Libraries


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Text Appearing Before Image: ,-«L. ■ ^^T^ 8| MgSgSh* ic -^KV. *^^_ n mBEgjU* *-- ~ -M. 1 .- PjaS^-t ■»■ T^l ■■- -2 fe*- ^ ^ wp^-^^^r £ ■? • y. .£2Tc9ft imGO??? MONTREAL PARK & ISLAND RAILWAY — NEAR BACK RIVERPARK. reversible seats, giving a total seating capacity of 45 pas-sengers. The track. construction throughout the road is of avery substantial character. Fifty-six-pound T-rails areemployed on all of the suburban lines. _ They are spikedto Tamarack ties and the tracks are ballasted with brokenstone throughout. The rails are bonded with heavycopper wire and are cross-bonded at every sixth joint.

Text Appearing After Image: .:-m - MONTREAL PARK & ISLAND RAILWAY-STATION AT BACK RIVERPARK Wooden side poles are employed and the overheadmaterial is of the best. The lines of the road will be extended and new equip-ment will be installed, eventually forming one of the mostcomplete electric railway systems in Canada. . BY GEORGE T. HANCHETT. Three-Wire System. If we have a number of electrical devices, each requir-ing a certain current, and connect them in multiple with asource of supply, it is obvious that we must supply a lineof sufficient carrying capacity and suitable resistance todeliver a current sufficient to operate all of these variousdevices, which current is the sum of the currents of all thedevices. If we. limit ourselves to a certain loss of pressure,we thereby fix the resistance, and, therefore, the size of the..conductors which carry the current. Copper wire is veryexpensive, and while it is desirable to have a small loss ofpressure, it is also desirable to have as small a wire aspossible; th


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