Method for the production of threaded nuts by cold forming

Details Method for the production of threaded nuts by cold forming Method for the production of threaded nuts by cold forming

1979-08-22

1981-11-10

Combs, Ervin M.

B21D 5324, B21K 168

Patent

active

042990009

ABSTRACT:
A method for the preparation of hexagonal nuts by cold forming wherein a blank is shaped and formed to a hexagonal configuration wherein the distances across the flats of the hexagon are greater than in the finished nut, and thereafter the rough nut is forced into a shaping die and over a punch concentric therewith, whereby the punch forms the central opening in the nut and the shaping die reduces the distances across the flats of the hexagon to that of the final nut size.

REFERENCES:
patent: 1957922 (1934-05-01), Wilcox
patent: 1970430 (1934-08-01), Nussbaum
patent: 1977162 (1934-10-01), Wilcox
patent: 2015596 (1935-09-01), Harvey et al.
patent: 2547801 (1951-04-01), Wilcox
patent: 2689360 (1954-09-01), Ware
patent: 2751676 (1956-06-01), Kaul
patent: 2870465 (1959-01-01), Kraus et al.
patent: 2994952 (1961-08-01), Klooz
patent: 3793658 (1974-02-01), Ladouceur

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