File:Railway and locomotive engineering - a practical journal of railway motive power and rolling stock (1907) (14574732298).jpg

Identifier: railwaylocomotiv20newy (find matches)
Title: Railway and locomotive engineering : a practical journal of railway motive power and rolling stock
Year: 1901 (1900s)
Authors:
Subjects: Railroads Locomotives
Publisher: New York : A. Sinclair Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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been found necessary to place onetunnel above the other. In general contour the line may beviewed as consisting of three sections—Finsbury Park to Holborn, Holborn toEarls Court, and Earls Court to Ham-mersmith—the first and third falling to- July, 1907. RAILWAY AND LOCOMOTIVE EXGINEERING 327 wards the middle section, which is moreor less level. As is usual with lines ofthis nature, the stations are approaciicdon a rising or retarding gradient, 1.5 percent, and left on a down or acceleratinggradient, 3.0 per cent. The line of routefollowed has necessitated many curves,varying in radius from 1,320 to 330 ft.;a spcci.il fcntiirr in tlii; direction i<; a non-inflammable wood. One novel pointabout these lifts is that in every casepassengers leave from the side oppositetc that at which they enter, the exit gatesbeing operated by the attendant at hispost by the entrance gate with the aidof compressed air. No less than nineteen exhaust fans,driven by in-IT. P. nintnr^ at 2=;o revolu-
Text Appearing After Image:
MOTOR COACH USED IN THE PICCADILLY TUBE. long reverse S curve near South Kensington. The track is laid on the usual concretebed, the sleepers of Australian Karriwood and rendered non-inflammable, andthe running rails are of Bessemer steelof bullhead section, weighing 90 lbs. peryard, laid to the standard gauge, withan inward cant of l in 20. The con-ductor rails are of rectangular sectionweighing 85 lbs. per yard. The ballastis of M-iu- granite cubes, and for twofeet above the ballast level the iron seg-ments of the tunnel are lined with con-crete in order to secure the best possibleinsulation. Three-phase alternating current foroperating the Piccadilly and its asso-ciated lines is supplied at 11.000 voltsfrom the great power station of the LTn-derground Electric Railways Companyat Lots Road. Three rotary convertersof 800 k.w. each are provided at HydePark corner, and two of 1,200 k.w. eachat Russell Square and Holloway Road,respectively. The current is fed to theconductor rails at f

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