Scroll displaying device

Details Scroll displaying device Scroll displaying device

1994-02-14

1996-02-27

Silbermann, Joanne

Card, picture, or sign exhibiting

Changing exhibitor

Motor operated

40518, G09F 1118

Patent

active

054938023

ABSTRACT:
A scroll displaying mechanism suitable for use in moving advertising displays, chart recorders and tape readers uses a pair of D.C. motors wired to operate under slightly different speed-controlling voltages in order to maintain the displayed part of the scroll between two rollers taut. A simple belt and pulley drive mechanism for each roller assures quiet and vibration-free operation. The viewing time between frame-advance and the scroll direction reversal are controlled by detection of different length markers positioned along one edge of the scroll. Also disclosed is a simple, easily assembled and disassembled display apparatus which allows both vertical and horizontal adjustment of the size of the viewing window frame.

REFERENCES:
patent: 2677967 (1954-05-01), Galbraith
patent: 2891325 (1959-06-01), Breuning
patent: 3479985 (1969-11-01), Morley
patent: 3510973 (1970-05-01), Mazzocco, Sr.
patent: 3726031 (1973-04-01), Singer
patent: 3829997 (1974-08-01), Singer
patent: 4040304 (1977-08-01), McCabe
patent: 4463792 (1984-08-01), Lukos
patent: 4862614 (1989-09-01), Shettleroe

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