Machine element or mechanism – Mechanical movements – Oscillation or reciprocation to intermittent unidirectional...
Patent
1975-05-23
1977-01-18
Gerin, Leonard H.
Machine element or mechanism
Mechanical movements
Oscillation or reciprocation to intermittent unidirectional...
74 88, 242 713, 242 714, 354213, F16H 2702, F16H 2902, G03B 124, G03B 110
Patent
active
040032680
ABSTRACT:
An improved film winding device for photographic cameras, having a sprocket, a sprocket rotation limiting member and an engaging member, both of which move in unity with the sprocket, a stopper member which is interconnected with the film winding operation to be engaged with the sprocket rotation limiting member at the completion of one film frame winding to stop further rotation of the sprocket, and a driving member which is also interconnected with the film winding operation to be engaged with the engaging member to drive the engaging member for the rotation of the sprocket, the engaging member and the driving member being disposed at a predetermined space interval therebetween prior to commencement of the film winding operation, and the shifting quantity of the driving member being made greater than the shifting quantity of the engaging part.
REFERENCES:
patent: 2879704 (1959-03-01), Winkler et al.
patent: 3007382 (1961-11-01), Bok
patent: 3832729 (1974-08-01), Tenne
Gerin Leonard H.
Nippon Kogaku K.K.
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