Film feed device of camera

Details Film feed device of camera Film feed device of camera

1995-03-08

1997-10-28

Rutledge, D.

Photography

With film drive

Mechanical detail

396413, G03B 100

Patent

active

056825650

ABSTRACT:
A feeding tooth of a one-tooth sprocket retracts from a film so that the film can be prevented from being damaged by the feeding tooth of the one-tooth sprocket when the film is rewound. When a motor rotates in a film winding direction, a rewinding fork becomes free and a spool and the one-tooth sprocket rotates in a winding direction. As a result, the feeding tooth of the one-tooth sprocket engages with a perforation of the film to feed the end of the film up to the spool. On the other hand, when the motor rotates in the film rewinding direction, the one-tooth sprocket becomes free and the spool and the rewinding fork rotate in the rewinding direction. As a result, the film is wound around a rotation axis of a patrone. In this case, the feeding tooth of the one-tooth sprocket retracts from the film.

REFERENCES:
patent: 4610522 (1986-09-01), Tobioka et al.
patent: 4688763 (1987-08-01), Wakabayashi et al.
patent: 4987436 (1991-01-01), Misawa

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