Optics: motion pictures – Removable film strip magazine type
Patent
1976-10-04
1978-03-21
Hix, L. T.
Optics: motion pictures
Removable film strip magazine type
354 88, 352 78R, 352130, G03D 506
Patent
active
040806146
ABSTRACT:
Apparatus is provided for positively retaining a slidably displaceable valve member in its stored position prior to initiation of the processing cycle in a multi-purpose film cassette of the type containing a photographic film strip for exposure, processing and viewing without removal from the cassette. A latching arm forming a part of the valve member is configured to prevent displacement of the valve member at all times prior to the movement of the pressure plate to the position it occupies during high speed continuous advancement of the film. The pressure plate is in operative engagement with the latching arm and movement of the pressure plate to this position results in positive displacement of the latching arm by the pressure plate to a position where the latching arm is no longer operable to prevent displacement of the valve. The valve is then free to be displaced to its final position where it serves to seal off the processing fluid nozzle.
REFERENCES:
patent: 3748994 (1973-07-01), Stella
patent: 3785725 (1974-01-01), Batter et al.
patent: 4003064 (1977-01-01), Mason
Goettel, Jr. Frederick A.
Hix L. T,.
Mathews Alan
Polaroid Corporation
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