Identifier: electricrailway481916newy (find matches)
Title: Electric railway journal
Year: 1908 (1900s)
Authors:
Subjects: Electric railroads
Publisher: (New York) McGraw Hill Pub. Co
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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LIMITED CLEARANCE STEAM SHOVEL IN LOADING POSITION 196 ELECTRIC RAILWAY JOURNAL (Vol. XLVIII, No. 5
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July 29, 1916) ELECTRIC RAILWAY JOURNAL 197 York municipal engineers. Thus, despite the provisionsfor withstanding vibration and rough treatment by pas-sengers, the fourteen-door engines per car (twelve forthe side doors, two for the end doors) weigh only 462lb. without the piping, and 742 lb. with the piping. Because of the large number of engines per car,economy in the use of air was strictly enjoined. Toguard against all air leakage as far as possible, thevalve mechanism of each engine is so arranged thatwhen the door is entirely opened or closed the air supplyis cut off at the engine by means of a slide valve, whichin turn is operated by small electro-magnetic valves.This slide valve governs the supply of air from themain reservoir. Thus, any possibility of leakage be-yond the piston leathers, except while the door is at itsactual opening or closing movement, is eliminated.Since this engine exhausts the compressed air, it ispossible for a station platform guard to close the doorby

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