Advancing material of indeterminate length – Means to engage longitudinally spaced modifications in material – Prong operable intermittently to prevent longitudinal...
Patent
1974-05-16
1976-03-02
Schacher, Richard A.
Advancing material of indeterminate length
Means to engage longitudinally spaced modifications in material
Prong operable intermittently to prevent longitudinal...
226 64, 352193, G03B 122
Patent
active
039412873
ABSTRACT:
There is disclosed a film pull-down mechanism comprising a four-pivot linkage with two additional links attached thereto. The two additional links are mounted between a plane containing the film and a plane intersecting the drive means of the mechanism.
REFERENCES:
patent: 2749798 (1956-06-01), Ruhnau
Firma Arnold & Richter KG
Schacher Richard A,.
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