Automatic scroll sign

Card – picture – or sign exhibiting – Changing exhibitor – With electric circuit control

Patent

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Details

40471, G09F 1100

Patent

active

041109252

ABSTRACT:
A sign cabinet having a scroll movably mounted on rollers for movement past a display opening in the cabinet. A torsion spring acts on one of the rollers to compensate for differences in the rate of movement of the scroll at the two rollers. An electronic control circuit automatically senses the position of the scroll and is actuated by the position information for controlling the operation of the scroll. The modes of operation include: continuously moving back and forth between preselected end points within the scroll; moving back and forth within a predetermined section within the end points, stopping at preselected frames within the section; and, advancing from one frame or section to another.

REFERENCES:
patent: 3334432 (1967-08-01), Bates et al.
patent: 3510973 (1970-05-01), Mazzocco
patent: 3961433 (1976-06-01), D'Cruz

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