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US 4,178,089 AGranted
Photographic developer
OwnerHarry A. H. Spence-Bateinventor
Life of this patent
Estimating the term…
Abstract
A photographic developer for sheet film arranged to feed the film through two or more interconnected chambers sealed by seals at the inlet of the first chamber and the outlet of the final chamber and also sealed at the interconnection of the chambers by means of seals which are preferably rotatable and controlled by a single motor, the seals preferably having rotatable valves at one end which control the inlet and outlet of developing and fixing agents as well as a drying gas.
Claims8
A photographic developer comprising in combination:
- a first film receiving chamber,
- a second film receiving chamber in intercommunication with said first chamber,
- a fluid seal separating said chambers,
- a first chamber inlet seal,
- a second chamber outlet seal,
- wherein at least one of said seals comprises a rotatable gate formed as a cylinder with a longitudinal cut away section forming a passage through which film may be passed and wherein said chambers have fluid inlets for feeding fluids therethrough.
3 more elements
Dependencies are inferred from the claim text.