| 摘要 |
538,497. Self-locking nuts. SIMMONDS. O. E., and SIMMONDS DEVELOPMENT CORPORATION, Ltd. April 24, 1940, No. 7362. [Class 89 (i)] Nuts are rendered self-locking by the incorporation of discs of spring metal of which parts are displaced axially by the threads of the bolts. A disc 6, Fig. 1, of spring metal is blanked out leaving a series of projections 8, that may be dished at 4 to strengthen them. The disc is se-, cured in a counterbore in the nut by flanging over the wall at 9, Fig. 4, if desired with an interposed washer 10. In a modification a thicker disc is used with the edges of the projections bevelled to suit the thread. In further modifications the discs are flanged to engage over deformable projections 33, Fig. 13, on the nuts, and are secured by upsetting axially to the form shown in Fig. 11 which shows projections corresponding to Fig. 1 the disc of Fig. 13 having a complete circular edge except for one notch deformed at 34 to facilitate engagement with the bolt. In another modification two notches are employed. Any of the forms of disc may be used with either method of securing. |
