Method of making lock nuts

Details Method of making lock nuts Method of making lock nuts

1985-06-04

1986-08-05

Combs, E. Michael

B21D 5324

Patent

active

046034463

ABSTRACT:
A method of making loosening preventing nuts wherein a nut is cut down circularly on one end side to form a crown-shaped part, this crown-shaped part is cut as inclined in the opposite angle parts and is compressed in the axial direction with a die to be bent inward and, as a result, to be substantially hexagonal on the inner periphery of the tip, the same screw as the screw of the nut is threaded on the inner periphery of the tip and then the crown-shaped part is again compressed in the axial direction with the die to slightly reduce the inside diameter of the tip to thereby obtain a loosening preventing nut.

REFERENCES:
patent: 2336023 (1943-07-01), Luce
patent: 2363680 (1944-11-01), Luce
patent: 2539899 (1951-01-01), Delaney

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