| 摘要 |
495,340. Lock-nuts. ELASTIC STOP NUT CORPORATION. May 21, 1937, No. 14206. Convention date, May 28, 1936. [Class 89 (i)] [Also in Group XXII] In lock-nuts of the kind having a cylindrical recess 16 which contains an insert 24 of deformable material, the wall of the recess is deformed to exert lateral pressure on the insert and prevent it rotating. The insert may be formed by one or more laminated washers, and has one end surface maintained in contact with a conical wall 18 in the recess. The nut body is deformed by a tool having a pilot 34, which enters the hole in the insert, and a punch 36 having a conical surface 38 which deforms and crimps the wall of the recess.
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