Advancing material of indeterminate length – Means to engage longitudinally spaced modifications in material – Prong operable intermittently to prevent longitudinal...
Patent
1981-02-24
1983-09-20
Christian, Leonard D.
Advancing material of indeterminate length
Means to engage longitudinally spaced modifications in material
Prong operable intermittently to prevent longitudinal...
226 68, G03B 128, G03B 122
Patent
active
044050704
ABSTRACT:
In the film transport mechanism, the film strip is driven in the perforation plane from a drive shaft by means of at least one transport pin. The drive shaft has in the perforation plane a constant-diameter cam, to which the transport pin is coupled by a shuttle frame. To improve such film transport mechanism so as to reduce the noise generated by it in operation, the shuttle frame is additionally coupled to a rocking crank and slider linkage or to a slider, which is part of a slider crank mechanism, which has a drive shaft that is identical to the shaft for driving the transport shuttle.
REFERENCES:
patent: 2760403 (1956-08-01), Wall
patent: 3618837 (1971-11-01), Jacobsen
patent: 3777961 (1973-12-01), Blaschek
Arnold & Richter Cinetechnik GmbH, & Co. Betriebs KG
Christian Leonard D.
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