Railroad construction. Theory and practice. A textbook for the use of students in colleges and technical schools. By Walter Loring Webb by Webb Walter Loring 1863-1941

Author:Webb, Walter Loring, 1863-1941
Language: eng
Format: epub, pdf
Tags: Railroads
Publisher: New York, J. Wiley
Published: 1900-03-25T05:00:00+00:00

and scarcely at all to the small gap required for expansion. This gap causes a drop equal to the versed sine of the arc having a chord equal to the gap and a radius equal to the radius of the wheel. Taking the extreme case (for a 30-foot rail) of a f" gap and a 33" freight-car wheel, the drop is about yijVtt"- ^^^ order to test how much the jarring at a joint is due to a gap between the rails, the experiment was tried of cutting shallow notches in the top of an otherwise solid rail and running a locomotive and an inspection car over them. The resulting jarring was practically imperceptible and not comparable to the jar produced at joints. Xotwithstanding this fact, many plans have been tried for avoiding this gap. The most of these plans consist essentially of some form of compound rail, the sections breaking joints. (Of course the design of the compound rail has also several other objects in view.) In Fig. 117 are shown a

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