File:The street railway review (1891) (14573048579).jpg

Identifier: streetrailwayrev161amer (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

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
placed a felt pad one-quarter of an inch thick, which deadensthe noise of the trains. The conductor rails, of which there are two, a positive and anegative, are of a different pattern from any others used in London.The section, which may be seen in the illustration of the track sec-tion, is practically a solid square. The object was to save spacevertically, an important matter in a tube railway, and at the same other at Baker St. In the Charing Cross sub-station there is alarge installation. It is entirely underground, part of it being be-neath the Thames Embankment gardens. The St. Georges Circusand Baker St. sub-stations are plain brick and steel buildings, andthe former is erected on heavy girders spanning the end of thedepot tracks. In all cases the arrangement of the machinery is simi-lar. Below the ground level is a basement for the cables betweenthe rotary converters and the switchboard, and from the switchboardto the exit to the railway tracks. Along one side of the main floor
Text Appearing After Image:
Crushed Granite Cubes (washed)bpass ARing El HON THROUGH TRACK AND LOWER SEGMENT OF TUNNEL. time to get the large cross sectional area. This section weighs 85lb. per yard. The electrical conductivity is high; the resistance is not morethan 6.4 times that of pure copper. The positive conductor rail is carried on specially-shaped insula-tors mounted on the ends of the ties close to the wall of the tube,while the negative rail is placed centrally on a lower type of insula-tor between the track rails. The positive insulator is of the peculiarshape which may be seen in the illustration, and has been designedto lie close to the curve of the tube. The insulators are of vitrifiedearthenware, and are fastened to the ties by malleable iron clips withfelt pads below them. The negative rail insulator is a square solidblock with a groove in the center for the rail, and it is held down ina similar way. The conductor-rail joints have each four bonds, two long and twoshort on each side. They are of t

Note About Images