Photographic film cassette having a spool locking device and cam

Details Photographic film cassette having a spool locking device and cam Photographic film cassette having a spool locking device and cam

1996-02-14

1997-03-04

Metjahic, Safet

Photography

Camera detail

Detachable or removable film holder unit

2423483, 396538, G03B 1702, G03B 1726

Patent

active

056084854

ABSTRACT:
A photographic film cassette has photographic film wound on a spool and rotatably contained in a cassette shell. A leader of the photographic film is caused by rotation of the spool to advance outward from a passage mouth thereof. Two positioning holes are formed in an end face of the cassette shell on an advancing side as inserted into a cassette receiving chamber of a camera, and are fittable on projections of a camera when the cassette shell is loaded therein. Three projections are formed on the end face, and come into contact with an upper inside face of the chamber of the camera when the cassette is loaded in the camera, in order to position the cassette shell vertically. A locking device, which locks the film spool, is unlocked when the film cassette is loaded in the camera.

REFERENCES:
patent: 5115268 (1992-05-01), Kitagawa et al.

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