Overextended leader positioning mechanism

Details Overextended leader positioning mechanism Overextended leader positioning mechanism

1984-12-24

1986-07-15

Hix, L. T.

354288, G03B 3500

Patent

active

046002855

ABSTRACT:
A film cartridge having a light-trapped slit from which a film leader protrudes is positioned in a photographic camera with the leader pointing towards a film take-up chamber in the camera. Enough of the leader is drawn out of the cartridge to reach a film take-up spool rotatably supported in the take-up chamber. Then, a leading end portion of the leader is placed in the take-up chamber in contact with the take-up spool to enable automatic engagement with the spool. If the leading end portion of the leader reaches beyond the take-up chamber, either because too much of the leader was drawn out of the cartridge or because the leader was too long originally, closing movement of the camera back causes a positioning member mounted on the back to insert the leading end portion into the take-up chamber and to press such end portion against the take-up spool.

REFERENCES:
patent: 3387546 (1968-06-01), Winkler et al.
patent: 3433143 (1969-03-01), Lieser et al.
patent: 3470801 (1969-10-01), Lieser et al.
patent: 4303325 (1981-12-01), Seely
patent: 4411509 (1983-10-01), Shirai
patent: 4459000 (1984-07-01), Sekine et al.
patent: 4477162 (1984-10-01), Matsumoto

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