Film developing apparatus including a series of processing tanks

Details Film developing apparatus including a series of processing tanks Film developing apparatus including a series of processing tanks

1981-05-15

1984-02-14

Mathews, A. A.

Cleaning and liquid contact with solids

Apparatus

Sequential work treating receptacles or stations with means...

354328, 134 76, G03D 304, G03D 310

Patent

active

044312938

ABSTRACT:
Developing apparatus mainly for the developing of films, comprising developing tanks (1-9), hangers (11) for films, transporting means (13-15) for transporting the hangers into register with the developing tanks, and a control unit (16) with clock unit (17), said control unit being arranged to control the transporting means with the aid of the clock unit. The apparatus has provided with separate tank switches (18) in register with the tanks (1-9), these switches having been arranged to cooperate with the hangers (11) under their control, and with a display unit (19) which has been connected with the tank switches and arranged to indicate those hangers which are in the tanks, and that the clock unit is adjustable so that the staying time of the hangers can be regulated. The tank switches (18) consist preferably of magnetic switches, and each hanger (11) has been provided with a magnet (19a) so that the magnet becomes positioned in the immediate vicinity of the respective tank's switch when the hanger is suspended in register with the respective tank. The magnetic switches (18) have preferably been mounted within a substantially enclosed protective cover (20).

REFERENCES:
patent: 2542830 (1951-02-01), Newton et al.
patent: 2920548 (1960-01-01), Copenhefer
patent: 2933032 (1960-04-01), Pardee
patent: 3144030 (1964-08-01), Donovan
patent: 3225675 (1965-12-01), Cross et al.
patent: 3241473 (1966-03-01), Hope et al.
patent: 3353470 (1967-11-01), Zane
patent: 3559553 (1971-02-01), Buechner
patent: 4208119 (1980-06-01), Bate et al.

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