Apparatus for making internally threaded lock nuts

Details Apparatus for making internally threaded lock nuts Apparatus for making internally threaded lock nuts

1982-03-08

1984-09-04

Combs, E. Michael

10 73, 10 76R, 72354, 72356, B21D 5324, B21D 5322

Patent

active

044688270

ABSTRACT:
An apparatus for forming a lock nut from an annular workpiece including a support member having a central seat for receiving the annular workpiece. Fingers are radially displaceable with respect to the central seat for forcing peripheral indentations into the workpiece. A plunger is axially displaced with respect to the central seat for arcuately deforming the planar configuration of the workpiece. A threaded pilot is placed within the central set so that the fingers simultaneously press internal threads in the workpiece. The workpiece itself is formed of a continuous strip of material arcuately bent to form an annular member having a radially extending seam.

REFERENCES:
patent: 1315289 (1919-09-01), Dover
patent: 1822600 (1931-09-01), Olson
patent: 1934752 (1933-11-01), Wilcox
patent: 2205871 (1940-06-01), Young
patent: 2287214 (1942-06-01), Wilcox
patent: 2527983 (1950-10-01), Brown et al.
patent: 3453672 (1969-07-01), Gohs
patent: 4389871 (1983-06-01), Takeuchi et al.

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