Sheet metal container making – Apparatus for can body making
Patent
1981-09-18
1983-07-12
Husar, Francis S.
Sheet metal container making
Apparatus for can body making
72354, 72370, B21D 5126
Patent
active
043927645
ABSTRACT:
This relates to the necking-in of a free end portion of a container, and particularly a very thin wall can body, utilizing necking-in tooling. The tooling differs from conventional tooling in that in addition to the necking-in operation, it also serves radially inwardly to turn the free edge portion of the container body to facilitate leading-in of the necked-in portion into another tubular container component with the in-turned free edge portion also providing a section modulus which effects stiffening and form retaining of the free end portion. In addition, it has been found that conventional necking-in tooling for aluminum can bodies having a free edge thickness on the order of 0.0075 inch will not perform satisfactorily on like can bodies having a free edge thickness on the order of 0.006 inch, and that surprisingly by increasing an adjacent radius, the tooling will perform satisfactorily. This abstract forms no part of the specification of this application and is not to be construed as limiting the claims of the application.
REFERENCES:
patent: 1698999 (1929-01-01), Hothersall
patent: 2174967 (1939-10-01), Cartwright
patent: 3845653 (1974-11-01), Hilgenbrink
Kubis Charles S.
Walter John
Brown Charles E.
Continental Can Company Inc.
Husar Francis S.
Jones David B.
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