Film cartridge producing method

Details Film cartridge producing method Film cartridge producing method

1991-08-14

1992-11-03

Gorski, Joseph M.

Metal working

Method of mechanical manufacture

Assembling or joining

29516, 413 2, B21D 3900

Patent

active

051597470

ABSTRACT:
When shaping a film cartridge having a hollow cylindrical shell and caps mounted on ends of the shell, a shell plate is brought into abutment with a mandrel having a perfectly circular cross section and bent around the mandrel by a bending roller. A cap is mounted on an end of the hollow cylindrical shell while it is on the mandrel, and the cap is clinched to the hollow shell while the cap and the hollow shell are grasped from the outside.

REFERENCES:
patent: 2026780 (1936-01-01), Frostad
patent: 2303322 (1942-12-01), Bigger
patent: 2725001 (1955-11-01), O'Neil
patent: 3053209 (1962-09-01), Smith et al.
patent: 3157339 (1964-11-01), Negoro
patent: 3416412 (1968-12-01), Wilcox
patent: 4513596 (1985-04-01), Usher

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