Apparatus for threading closures

Details Apparatus for threading closures Apparatus for threading closures

1982-07-23

1984-03-27

Gilden, Leon

Sheet metal container making

Apparatus to form container closure

72103, 72114, B21D 5100

Patent

active

044390823

ABSTRACT:
An apparatus for threading a closure which includes a vertically movable nest for receiving a closure shell and a vertically movable threading tool which includes a cylindrical threading member having threads on the outside thereof which is receivable within the shell and is movable in an orbital path to produce threads on an inside curl that has been previously formed on the closure shell.

REFERENCES:
patent: 1900880 (1933-03-01), Kramer
patent: 2019493 (1935-11-01), Hothersoll
patent: 2215845 (1940-09-01), Williams et al.
patent: 2348085 (1944-05-01), Merolle
patent: 2353349 (1944-07-01), Merolle
patent: 2957439 (1960-10-01), Stuchberry

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