File:Report on the engineering and operating features of the Chicago transportation problem (1905) (14572991879).jpg

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Identifier: reportonengineer00arno (find matches)
Title: Report on the engineering and operating features of the Chicago transportation problem
Year: 1905 (1900s)
Authors: Arnold, Bion J. (Bion Joseph), 1861-1942 Chicago (Ill.). City Council. Committee on Local Transportation
Subjects: Street-railroads -- Illinois Chicago Subways -- Illinois Chicago
Publisher: New York : McGraw Pub. Co.
Contributing Library: University of Illinois Urbana-Champaign
Digitizing Sponsor: University of Illinois Urbana-Champaign

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perlineal yard and as designed presents some new and very valuablefeatures which have not heretofore appeared in any of the designsfor girder grooved rails, which have been manufactured. Itsgreat weight and strength will be of mateiial assistance in theproduction of a rigid and unyielding track. The increasedbreadth of tread with the slight bevel toward the back of the railis a very important improvement for two reasons. First—It provides for the use of car wheels w^itli broad treadswhich will present a greater surface for frictional resistance tobrake shoes, thus reducing the wear of brake shoes and of thewheels. Second—The beveled surface at the back of the tread of therail will prevent the wheel from crushing or wearing the pave-ment where it comes in contact with the rail head. The web ofthis rail is brought nearly central under the bearing point of thehead, which is a desirable feature where traffic is very heavy.The load is then transmitted more directly to the base without
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Arnold, Bion J. (Bion Joseph), 1861-1942;

Chicago (Ill.). City Council. Committee on Local Transportation
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27 July 2014
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This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/14572991879. It was reviewed on 17 October 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

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