Other

Cpac, Inc.

Ernest E Thompson, Iii

David L Fenton

Charles E Welch

A metal recovery apparatus in which metal-laden fluid is cycled through an electrolytic cell at a relatively low flow rate, but fluid within the cell is forced to swirl at a relatively high speed to improve electroplating of metal on an electrode. Two fluid circuits are used to achieve the high speed within the cell: a fluid supply circuit runs fluid through the apparatus at a relatively low flow rate (about 2 to about 4 gallons per minute); a fluid circulation circuit boosts the speed of the fluid within the cell and forces it to swirl by discharging fluid drawn from the cell back into the cell at a relatively high flow rate (about 20 to about 40 gallons per minute). The apparatus includes inner and outer electrodes defining an annular space in which the fluid circulates. The outer electrode is preferably removable from the apparatus and is preferably the cathode. A seam in the cathode allows the cathode to be opened for removal of metal plated on the cathode. Current efficiency within the circulating fluid is optimized by using a cathode-to-anode surface area ratio of between about 1.8:1 and about 2.4:1, further enhancing recovery of metal from the fluid. The apparatus is particularly suited for the recovery of silver from photographic chemicals, especially bleach-fix solutions.

Metal recovery apparatus

Apparatus for applying protective coatings to photographic films or papers in web or sheet form. More specifically, apparatus for applying protective coatings that are curable by actinic radiation is provided. The apparatus includes a feeding station for supplying film which may be either a feed spool or a sheet feeder for holding and supplying individual sheets of film. The apparatus further includes a conveyor for conveying the film through a coating station and a curing chamber to a receiving station which also may either be a take-up spool to receive coated cured film or a stacking device to receive a stack of individual sheets of film. The conveyor can either be a series of conveying spools or pulleys or an endless conveyor belt in the case of individual sheets of film. The coating station includes a coating roller having a pattern of grooves formed by winding wire onto the surface thereof or other pattern of surface indentations.

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Avon, NY, United States of America

Ernest E Thompson, Iii