| 摘要 |
A knuckle-type railway car coupler having a modified 10A coupler contour wherein the pulling face of its pivoted knuckle is offset approximately five-sixtyfourths inch closer to the front face of the coupler head, and the heel and adjacent front face portions of the knuckle are relieved and contoured along a smooth compound convex curve formed by several radii to provide a tightened coupler contour of substantially reduced slack compared to the standard 10A contour. The knuckle further has the portion of the inner side wall of its tail portion adjacent and extending rearwardly from its throat section relieved along a smooth concave curve of substantial radius to prevent binding between couplers during uncoupling.
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