B - Operations – Transporting – 01 – F
Patent
B - Operations, Transporting
01
F
259/35, 95/11.9
B01F 13/08 (2006.01) B01F 11/00 (2006.01) G03D 3/04 (2006.01)
Patent
CA 1198728
ABSTRACT OF THE DISCLOSURE A film stirring system for developing photographic film. The system includes a container for the developing solution and photographic film. An agitator within the container has a central hollow shaft and upper and lower perforated disks for supporting a roll of photographic film. A first magnetic disk is encapulated in plastic, to prevent contamination of the developing solution. This magnetic disk is secured to the hollow shaft and drive means is provided for imparting oscilating motion to the magnetic disk on the shaft. The drive means includes a housing, a motor, a circular crank on the motor, and a connecting rod secured between the periphery of the circular crank and a rack slider disposed in a groove in the housing for gear slideable movement. A pinion is mounted for rotation on the housing and meshes with the rack slider. The pinion gear is connected to a shaft which has a second magnet means thereon to connect with the first magnetic means on the hollow shaft in the container. It is thereby possible to impart oscilating movement to the photographic film carried by the hollow shaft while providing a light proof detachable container capable of lightproof liquid-proof interconnection with the drive means. The magnetic disk on the hollow shaft is encapsulated in plastic to prevent contamination of the developing solution by the barium iron oxide material which could result in irregularities in the development of the film. The oscilating movement imparted by the crank type drive means is perferable to rotary motion.
415320
Cheng Richard M.h.
Lee Rock S.
Canadian Patents And Development Limited - Societe Canadienne De
Hendry Robert G.
LandOfFree
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