Sheet metal container making – Apparatus for can body making
Patent
1986-07-23
1987-12-08
Schmidt, Frederick R.
Sheet metal container making
Apparatus for can body making
72336, 72347, 72349, 72379, B21D 5128
Patent
active
047116110
ABSTRACT:
Methods and apparatus are disclosed for fabricating from ductile sheet metal a can body with integral side and bottom walls. A rounded non-circular blank is formed from the sheet metal, the blank having a greater width across the grain of the metal than along such grain. The blank is formed into a cup-shaped receptacle having a bottom and an upstanding wall of not less than the desired internal size of the can body. The wall has a length substantially less than the desired depth of the can body and is substantially thicker than the thickness desired in the finished can body. The wall is then thinned to the desired thickness so as to lengthen the wall to at least the desired depth of the can body.
REFERENCES:
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patent: 4030432 (1977-06-01), Miller et al.
patent: 4040282 (1977-08-01), Saunders
patent: 4425778 (1984-01-01), Franek et al.
patent: 4446714 (1984-05-01), Cvacho
Bachmann Henry C.
Fraze Ermal C.
Dayton Reliable Tool & Mfg. Co.
Schmidt Frederick R.
Showalter Robert
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