File:History of the West End street railway, in which is included sketches of the early street railway of Boston- consolidation of the various lines- foreign street railways- the Berlin viaduct- anecdotes, (14760583372).jpg

Identifier: historyofwestend00hage (find matches)
Title: History of the West End street railway, in which is included sketches of the early street railway of Boston- consolidation of the various lines- foreign street railways- the Berlin viaduct- anecdotes, etc., together with speeches by President Henry M. Whitney, and others. Also, expert testimony as to the safety of electric currents..
Year: 1892 (1890s)
Authors: Hager, Louis P
Subjects: West End Street Railway Company Street-railroads
Publisher: Boston, Ed. and pub. by L. P. Hager
Contributing Library: Northeastern University, Snell Library
Digitizing Sponsor: Northeastern University, Snell Library

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feet long, to drive the counter-shafting in the base-ment, the belts being carried under the floor by means of a mam-moth bslt tightener. Each engine requires two separate founda-tions, with a wheel pit between, each of which consists of a sub-structure of seven courses of granite, 12 feet high and about 9 feetwide at the top. Upon this is built the superstructure of brick 9feet high and 8 feet wide, into which are set the capstones on whichthe cylinders and engine beds rest. Tlie air pumps and condensershave independent foundations of granite, as also the engine belttighteners and two rows of counter-shafting. Steam is supplied to the engines from two mains, there being aconnection to both mains, though only a single pipe comes to theengines, the two branches being connected by valves half waybetween the mains and the engines. This on3 steam pipe thenentersa separator of special design about 36 inches diameter by 6feet high, located over the throttle valve of the high-pressure cylin-
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WEST END STREET RAILWAY. 8/ der. Similar connections are made to each engine. The mainsteam pipes, which are duplicate throughout, just as in the boilerhouse, are 20 inches diameter at end nearest the boilers, tapering to18 inches at the further end. Directly behind the low-pressure cyl-inder is situated the Corliss vertical circulating engine, also built byThe Edward P. Allis Company, which performs three distinct func-tions, namely, circulates the salt condensing water, operates the airpump for the condensers, and acts as a feed pump for the boilejs.Each engine is provided with a surface condenser, the cold water forwhich is provided by two lines of cast-iron pipes, drawing water fromthe South Bay. Th2se pipes, which are entirely underground, startfrom the South Bay with a diameter of 36 inches, one being theinlet and the other the outlet, and retain this diameter till theyenter the basement of the power house, where each pipe branchesinto two, one for each side of the house, each b

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