Apparatus for forming a container curl with a generally V-shaped

Details Apparatus for forming a container curl with a generally V-shaped Apparatus for forming a container curl with a generally V-shaped

1985-09-24

1987-05-26

Spruill, Robert L.

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

72356, 413 8, 413 56, 413 73, 220 74, 220355, B21D 2202, B21D 5144

Patent

active

046674993

ABSTRACT:
An apparatus for deforming an existing external curl on a tubular side wall of a container to form a crushed curl through the use of a first die having an annular groove of generally semi-circular cross section which engages a peripheral inside and outside portion of the curl to prevent lateral spreading thereof, a second die includes a convex generally V-shaped annular surface which enters into the annular groove of the first die, an imaginary line diametrically intersecting the V-shaped convex surface is also generally coincident with an imaginary line diametrically intersecting the annular groove, and upon relative movement of the die such that the convex surface enters into the annular groove, a portion of the curl is crushed into a generally V-shaped configuration.

REFERENCES:
patent: 1730575 (1929-10-01), Hothersall
patent: 2343006 (1944-02-01), Gibbs
patent: 2700354 (1955-01-01), Lyon
patent: 3434325 (1969-03-01), Podesta et al.
patent: 3977340 (1976-08-01), Geeson
patent: 4378328 (1983-03-01), Przytulla et al.

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