File:The Street railway journal (1905) (14574872420).jpg

Identifier: streetrailwayj261905newy (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

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akes withoutmaking any changes whatsoever in the connections. These locomotives are able to haul a train weighing 170 tons,exclusive of the locomotive, between Baker Street and Harrow switched in shunt connection with the field coils, so that thespeed may be increased 25 per cent, and the pressure of theair thereby increased from 4 ozs. per square inch to 6 ozs. persquare inch. This arrangement will be used when the motorsare working under the most severe conditions of service. A SIMPLE GUARD AGAINST FAST FEEDING The Durkin controller handle is a device for regulating therate of controller feed on electric cars, which has recentlybeen brought out by the Durkin Controller Handle Company,of Philadelphia. As shown in the accompanying illustrations,it consists of a rack, which is bolted to the top of the con-troller by means of three bolts, and a handle that is interchange-able with any rack made by the company. The rack is equippedwith a series of teeth projecting outward, which engage a
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FIG. 2.—GENERAL VIEW OF METROPOLITAN ELECTRIC LOCOMOTIVE at a maximum speed of 36 m.p.h.; and a freight train of 250tons, exclusive of locomotive, over the Circle at a maximumspeed of 27 m.p.h. The motors of this locomotive are of the usual series-woundtramway type, and there is nothing novel in the winding. Thedrawing, Fig. 3, shows the details of the ventilating air ducts.The air is admitted to the motor at a pressure of 4 ozs. persquare inch, and the mouth of the duct is so formed as to dis-tribute the entering air over the entire end of the armatureand field coils. The cover of the motor is of the ventilatedtype, so that this air, after it has absorbed the heat from thearmature and field coils, passes into the atmosphere. There are four motors with each locomotive, and these arearranged in pairs. Each pair of motors has a separate turretcontroller of the Westinghouse electro-pneumatic type. Thesecontrollers are manipulated by a single master switch and arenot of the automatic ty

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