File:The Street railway journal (1898) (14759461224).jpg

Identifier: streetrailwayjo141898newy (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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out the essential features of the multiple unitsystem of control, it is necessary to have on each car acomplete and independent air brake equipment, includingelectric motor compressor, main reservoir and automaticgovernor. As before stated, the Christensen air brake sys-tem has beenadopted on theSouth Side roadwith the GeneralElectric automaticregulator, and bothare working en-tirely to the com-panys satisfaction.The a u t o m a ticregulator is actu-ated by pressurefrom the main res-ervoir. It is neces-sary first that allthe compressors of the train should be stopped and started at the same time.This is accomplished by a balancing wire running from carto car and connected to the wire joining the compressor andgovernor on each car. With all the canopy switches closedand all the governors in operation, the compressors willcontinue to operate until the last governor cuts out. Inpractice they are all started and stopped by the weakestgovernor of the chain, the remaining governors usually
Text Appearing After Image:
PLATFORM AND SHOE performing no work until they in turn become the weakestgovernor in some other train. The compressor on anycar may, however, be cut out of circuit, in which case thereservoirs of that car are filled by the compressors on theother cars through a balancing pipe line connected with December, 1898.) STREET RAILWAY JOURNAL. 765 them all. The entire braking mechanism of a car, how-ever, can also be cut out of circuit and the braking per-formed by the other cars, suitable automatic check valvesbeing arranged to prevent wastage of air from other reser-voirs. The air compressor on the South Side cars is located be-neath the car body in an enclosed box, so arranged thataccess is readily had to the brushes as well as to the suc-tion and discharge valves. The Christensen compressor,engineers valve and other details have already been de-scribed at length in the Street Railway Journal invarious issues. The size used for the South Side carsis the 2 h.p., the smallest of the four si

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