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US 5,512,972 AGranted
Photographic processing apparatus
AssigneeAgfa-Gevaert
InventorsAlbrecht Domen, Bart Verlinden, Bart Verhoest, Freddy Van Humbeeck
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AssigneeAgfa-Gevaert
InventorsAlbrecht Domen, Bart Verlinden, Bart Verhoest, Freddy Van Humbeeck
Estimating the term…
Apparatus for processing photographic sheet material including at least two rollers which are rotatively supported on corresponding shafts and biased together by springs acting on one of the shafts is provided with a mechanism operable to separate the rollers. The mechanism consists of a cam carried in normally free-wheeling relation on at least one end of one of the shafts, a cooperating cam follower carried on at least one end of the other shaft and a clutch that can be actuated to engage each such cam on its shaft for temporary rotation therewith to thereby displace the cam into contact with a cam follower and bring about separation of the roller shafts and the rollers supported thereon. The ends of the shaft acted on by the springs is preferably journaled in bearing blocks arranged in a frame for sliding movement towards and away from the other shaft and biased by the springs toward the other shaft. Preferably, the clutch is a one-way clutch that permits free rotation of the cam when the one shaft is rotating in one direction and engages to rotate the cam with the shaft when the shaft is caused to rotate in the other direction. Each cam is held in a given position relative to the frame when free-wheeling on its shaft by a detent abutting against a part of the frame.
Apparatus for processing photographic sheet material including at least two rollers rotatable on respective shafts, support means for one of said shafts permitting movement of said shaft toward and away from the other of said shafts to bring said rollers into and out of peripheral contact with one another, means biasing said shafts toward one another, and means for moving said shafts away from one another to separate said two rollers from said peripheral contact, said means for moving said shafts comprising cam means and cooperating cam follower means operable upon displacement of said cam means into engagement with said cam follower means to move said one shaft away from the other said shaft, said cam means being mounted on one of said shafts for normal free-wheeling movement on said shaft without displacement of said cam means and said cam follower means being carried by the other of said shafts, and actuating means for temporarily securing said cam means to said one shaft for rotation therewith and consequential displacement into engagement with said cam follower means to effect separation of said rollers.
Dependencies are inferred from the claim text.