Continuous motion perforator

Details Continuous motion perforator Continuous motion perforator

1988-07-25

1989-08-08

Schran, Donald R.

Cutting

Cutting motion of tool has component in direction of moving...

Orbital motion of cutting blade

83345, 83326, 83660, 83667, B26F 106

Patent

active

048542032

ABSTRACT:
A perforator has an inner drum positioned within an outer drum. The drums define a nip through which a web of photographic film or other material is fed for forming perforations in the web by punches and dies on the drums. The dies are formed in a strip carried by the outer drum, and the punches are on disks on the inner drum. The die strip and disks are easily replaced when the dies and punches become worn.

REFERENCES:
patent: 1189093 (1916-06-01), Gompf
patent: 1559987 (1925-11-01), Reinhardt
patent: 2261315 (1941-04-01), Thorsen
patent: 3171314 (1965-03-01), Arndt
patent: 3355974 (1967-12-01), Carmichael
patent: 3661044 (1972-05-01), Duden et al.

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