Rotary perforating apparatus

Details Rotary perforating apparatus Rotary perforating apparatus

1974-08-02

1976-03-16

Schran, Donald R.

Cutting

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

Orbital motion of cutting blade

74116, 74118, 83100, 83698, 234 50, B26D 156

Patent

active

039438104

ABSTRACT:
A rotary perforating apparatus for forming the guide perforations in photographic film, wherein the mechanism which controls the movements of the punch carrier arms comprises a control disc which rotates eccentrically with respect to a film-supporting wheel, and wherein the punch carrier arms are connected to said control disc through control arms which may perform a spacial swinging movement, thereby to provide a mechanism which is little subject to wear, and wherein standard ball bearings and ball joints may be used.

REFERENCES:
patent: 2760576 (1956-08-01), Spencer
patent: 2963932 (1960-12-01), Glueck
patent: 2984138 (1961-05-01), Vitense et al.
patent: 3661044 (1972-05-01), Duden et al.
patent: 3763729 (1973-10-01), Ashby

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