Film threading apparatus

Details Film threading apparatus Film threading apparatus

1989-07-14

1990-09-11

Hix, L. T.

354 21, 354203, 354206, G03B 1728, G03B 1730

Patent

active

049566580

ABSTRACT:
In a photographic camera adapted for use with a film cassette containing a non-protruding film leader which can be automatically propelled out of the cassette, a pair of film guide members are fixed along opposite sides of a film threading path leading from a receiving chamber for the cassette. The film leader is wider than the substantial remainder of the filmstrip, and the film guide members are spaced apart a predetermined distance which is slightly less than the leader and slightly greater than the remaining length of the filmstrip, to cause the leader to be transversely bowed as it is propelled between the fixed guide members. When the film leader is transversely bowed, it becomes longitudinally stiffened to prevent it from being snagged along the film threading path.

REFERENCES:
patent: 1260357 (1918-03-01), Folmer
patent: 2336278 (1943-12-01), Mihalyi
patent: 3479938 (1969-11-01), Winkler et al.
patent: 4132473 (1979-01-01), Kondo
patent: 4324476 (1982-04-01), Seeley
patent: 4455076 (1984-06-01), Birkeland

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