New York [etc.] Simmons-Boardman Pub. Co. [etc.] · leaf 149
being condemned. Thepeculiarity of the tread face contour is partially due to theclearance between the nose of the knuckle and the bar,whereby the coupler is enabled to operate upon all curvework without being forced to move sidewise on the Knucklefaces when under pulling strains. In Fig. 3 the…
Railroads · Railroad cars
Internet Archive · Carnegie Library of Pittsburgh · Public Domain Mark 1.0. Free to use for anything.
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