Method and apparatus for manufacture of a vessel

Details Method and apparatus for manufacture of a vessel Method and apparatus for manufacture of a vessel

1979-12-12

1982-03-23

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

Spherical tool

72 82, 72 96, B21D 2216

Patent

active

043206441

ABSTRACT:
Method and manufacture for the manufacture of a cooking vessel with a flat, thick-walled bottom and a substantially thinner casing surface, a cup-shaped blank is shaped in the casing area by a rolling process on a substantially cylindrical, rotary mould part. The rolling tool comprises a rigid outer ring and numerous freely rotatable balls revolving in a groove. The area close to the bottom of the mould part is tapered, so that a cavity is formed into which the material can be shaped in the area close to the bottom.

REFERENCES:
patent: 369290 (1887-08-01), Kennedy
patent: 1728033 (1929-09-01), Blake et al.
patent: 2124961 (1938-07-01), Brinkman
patent: 2160975 (1939-06-01), Matter et al.
patent: 2573736 (1951-11-01), Scavullo

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