File:Railway master mechanic (microform) (1895) (14759350994).jpg

Identifier: railwaymastermec33newy (find matches)
Title: Railway master mechanic (microform)
Year: 1895 (1890s)
Authors:
Subjects: Railroads Railroads
Publisher: New York : (Simmons-Boardman Pub. Corp.)
Contributing Library: MIT Libraries
Digitizing Sponsor: Boston Library Consortium Member Libraries

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clocomotive which would cope successfully with the heavygrades necessary in the river tunnels. Since then electriclocomotives have been designed, constructed, and tested,and special recording track, sections have been laid and elec-trified. Much electrical apparatus has been built, and vol-uminous reports and records were compiled before the com-pletion of No. 3998, the first Pennsylvania type of electriclocomotive to be finished, and the one which was given itsfirst test recently on the Long Island R. R. Number 3998 weighs 330,000 pounds and is designed topull a heavy freight train at a speed of some 60 or 70 milesper hour. The first twenty-four electric locomotives to bebuilt for service in the New York tunnels will be assembledat Altoona shops. The electric apparatus is to be built atthe East Pittsburg shops of the Westinghouse Electric &Manufacturing Company, while the mechanical features willbe made in the railroads locomotive shops. November. 1909 RAILWAY MASTER MECHANIC 139
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Chassis of Pennsylvania Tunnel Locomotive The Pennsylvania type locomotive is built in two sec-tions, joined at the middle. Each section has eight wheels,four of which are drivers, 68-in. in diameter, the other fourbeing truck wheels 36-in. in diameter, constituting in theirarrangement and weight distribution what in steam locomo-tives is called the American type. The sections are per-manently coupled back to back by a distinctive arrangementof Westinghouse friction draft gear and levers, so thatthe leading section effectually pilots the rear one. Thisobviates all necessity of turning the engine, as it runsequally well in either direction, and all manipulating leversare duplicated in each section, so the operative simplychanges ends. Two pairs of drive wheels are coupled to a jack shaft, inline with the driver axles, which in turn is coupled to amotor crank shaft, to which a single motor delivers allits power. The cranks are ninety degrees apart, so therecan be no on-centre position.

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