Film wind-up mechanism for photographic camera

Details Film wind-up mechanism for photographic camera Film wind-up mechanism for photographic camera

1975-11-10

1976-11-23

Gilreath, Stanley N.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

354206, 354213, G03B 108, G03B 114

Patent

active

039932613

ABSTRACT:
A film wind-up member is released to return to the initial position either when the perforation detecting means detects the perforation of the film or when the detecting means is accidentally moved by friction with the surface of the film or the like. When the perforation detecting means detects the perforation or is accidentally moved, the film wind-up operation is stopped and the wind-up member is allowed to return to the initial position.

REFERENCES:
patent: 3750545 (1973-08-01), Beach
patent: 3774513 (1973-11-01), Ettischer et al.
patent: 3820142 (1974-06-01), Beach
patent: 3845493 (1974-10-01), Hackenberg et al.

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