Identifier: streetrailwayrev11amer (find matches)
Title: The street railway review
Year: 1891 (1890s)
Authors: American Street Railway Association Street Railway Accountants' Association of America American Railway, Mechanical, and Electrical Association
Subjects: Street-railroads
Publisher: Chicago : Street Railway Review Pub. Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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at 150 lb. pressure. Vicar mechanical stokersare used; coal handling machinery was supplied by the C. W. HuntCo., and the Crane Co., of Chicago, furnished all steam pipe bendsand valves. The plant was constructed and equipped under thesupervision of Mr. H, F. Parshall, consulting engineer. The Cen-tral London Ry. was constructed at a cost of £600,000 per mile.The Greathead shield was used in constructing its tunnels, thesame device which had been employed in the building of the City& South London line ten years before. Tunneling in Londonwas found to be a slow and expensive process, owing to the tough-ness of the clay to be excavated. The Central lines were five yearsunder construction, and engineers claim that the work might havebeen accomplished in half the time had the clay been of a differentcharacter. Mr. G. C. Cuningham is general manager of the Cen-tral I..ond(ni Ry., and the staff of engineers comprises Sir JohnFowler, Sir Benjamin Baker and Mr. Basil Mott. Nine trains of
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THE ITNDERCROnNI) KAII^WAYS OF I.ONHON. has 17 motor and 10 trail cars; the annual traffic is about 120,000Irain-milcs, Mr. C. J. Owens is manager and Mr. D. Heap, elec-trical engineer. The Central London Ry. was opened lor traffic July 30, igoo. Ithas 13 miles of track laid with lOO-lb. rails through twin tunnels.The tunnels are tiA ft. internal diameter except at the stations,where they arc widened to 21 ft. for a distance of 375 feet. Thereis a 3 per cent grade on each side of each station in order to re-tard or accelerate the trains, and it is estimated that by thisplan one-third of the power otherwise necessary for the accelera-tion of trains is saved. The trains run at a speed of l4/< milesper hour. In the Review for July, 1897, a map showing theroute of the Central London Ry. from Liverpool St. to Shep-herds Bush was given, together with a description of so much ofthe equipment as had at that time been contracted for. Nearlyall the contracts were awarded American manufacture

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