| 摘要 |
1,064,757. Making nuts. R. M. VAUGHN. Nov. 4, 1963 [March 28, 1963], No. 43435/63. Heading B3A. [Also in Division F2] A nut 14 (see Division F2) with a tapered bore wall (24), Fig. 7 (not shown), and whiskers 16 at one end, is produced by rolling knurls (27) on one end of a blank, Fig. 5 (not shown), then boring, tapping and counterboring with a tool (31) to break through between the knurls so that the whiskers 16 are produced. A tool 32 is then inserted to spread the whiskers. |
