Automatic photographic developing machine

Details Automatic photographic developing machine Automatic photographic developing machine

1996-07-03

1997-05-06

Mathews, A. A.

Photography

Fluid-treating apparatus

Having photographic medium feed

226188, 396622, G03D 308

Patent

active

056276192

ABSTRACT:
An automatic photographic developing machine allows a rack to be pushed up only if a feed mechanism of such rack is put under excessive load, and is made of fewer parts and is simple in structure. The rack has a feed mechanism for feeding photosensitive material and is inserted in a treating tank. The rack has an input shaft at its upper portion. The input shaft carries a helical gear in mesh with a worm of a drive shaft. A resilient piece made of synthetic resin is supported on a presser holder slidable in the axial direction of the drive shaft. An end of the resilient member is located opposite the end of the input shaft to prevent the rack from being pushed up. If the force urging the rack upward exceeds the resilience of the resilient piece due to an excessive load applied to the feed mechanism, the resilient piece is resiliently deformed by the input shaft. The rack is thus pushed up, and the helical gear is disengaged from the worm.

REFERENCES:
patent: 3078024 (1963-02-01), Sardeson
patent: 4252429 (1981-02-01), Hope et al.
patent: 4255039 (1981-03-01), Hope et al.
patent: 4327989 (1982-05-01), Hope et al.
patent: 5134430 (1992-07-01), Koizumi

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