Developing drum for photographic material

Patent

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Details

354307, 354324, 354331, 73322, G03D 1302

Patent

active

042192692

ABSTRACT:
A film-developing tank has a vessel having an opening and being adapted to receive a film to be developed and a developing medium for the film, and a cover axially closing the opening of the vessel. The cover has an axially outer funnel-shaped portion for pouring-in the developing medium therethrough, and an axially inner portion for receiving the developing medium so that the cover simultaneously forms a volume metering container. The outer portion has an inlet and an outlet, and the inner portion surrounds the outlet of the outer portion and is connected with the latter. The inner portion has outlet openings in the region of the opening of the vessel. The cover further has a separate pour-out opening provided in the region of connection of the portions with one another and extending from the interior of the vessel so that the developing medium can pour out from the latter through the pour-out opening. The wall of the outer funnel-shaped portion of the cover is formed as a guiding member with a read-off station, and a measuring rod extends through the guiding member movable relative to the same and has an axially inner end provided with a float in the inner portion of the cover.

REFERENCES:
patent: 1812676 (1931-06-01), Beall
patent: 2738675 (1956-03-01), Blair
patent: 3359799 (1967-12-01), Lubin
patent: 3595158 (1971-07-01), Long
patent: 3677163 (1972-07-01), Porter
patent: 3846818 (1974-11-01), Merz
patent: 4035818 (1977-07-01), King

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