Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1979-08-02
1981-03-24
Williams, Howard S.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204222, 204225, 204271, 204273, 204275, 204285, 204109, 308 26, 308 361, 308 37, 308 72, C25D 1720, C25C 100, F16C 2700, F16C 1704
Patent
active
042578647
ABSTRACT:
A portable unit for recovering metallic silver from photographic processing solutions includes a lightweight, molded tank structure. Spaced, elongate, stationary anodes are disposed within the tank and are positioned parallel to each other. An elongate cathode assembly is supported for rotation in the tank about an axis parallel to the anodes. The cathode assembly includes a specially configured apertured barrel designed to promote efficient contact between photographic solution and the remainder of the cathode components. The barrel is readily removed from the unit and disassembled to permit cathode components to be stripped of plated silver. Alternate cathode constructions are disclosed by which extremely efficient plating and silver recovery may be accomplished. The unit also includes a drive shaft seal assembly for supporting the cathode assembly for rotation. The seal assembly is flexible to permit operation of the device even when misaligned bearing support structures are provided.
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Valentine D. R.
Williams Howard S.
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