Holder for photographic processing machines

Details Holder for photographic processing machines Holder for photographic processing machines

1979-04-19

1981-03-10

Hix, L. T.

Cleaning and liquid contact with solids

Apparatus

Sequential work treating receptacles or stations with means...

354319, 134122P, 118259, 29113R, G03D 506

Patent

active

042550386

ABSTRACT:
A photographic processing machine has a plurality of rollers for transporting the photographic materials through a processing bath. According to this invention, alternate ones of adjacent rollers are provided with a flexible casing subject to internal hydraulic pressure. The flexible casing is formed of a textile fabric. The fabric encased rollers each have openings through their walls, the film treating bath liquid fed under pressure to the interior of each roller and then through the wall openings. The flexible textile casing thereby expands, to produce squeezing force on the photographic material being processed as the material passes between a rigid roller and its associated textile encased roller.

REFERENCES:
patent: 1208567 (1916-12-01), Johnston
patent: 1297809 (1919-03-01), Dixon
patent: 2233205 (1941-02-01), Frantz
patent: 3000287 (1961-09-01), Heldons
patent: 3023695 (1962-03-01), Kuster
patent: 3170382 (1965-02-01), Schwab et al.
patent: 3616742 (1971-11-01), Boyle et al.
patent: 3699621 (1972-10-01), Clarke et al.
patent: 3707749 (1973-01-01), Henley

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