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US 5,493,802 AGranted
Scroll displaying device
OwnerAnton K. Simsoninventor
Life of this patent
Estimating the term…
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.
Claims17
A display apparatus which comprises:
- a scroll having a ring end and a trailing end;
- a first roller having said leading end wound thereupon;
- a second roller having said trailing end wound thereupon;
- resiliently detachable means for rotatively mounting said first and second rollers;
- means for holding said first and second rollers in a substantially parallel and adjustably spaced-apart position in relation to each other;
- a first motor and means for driving said first roller with said first motor;
- a second motor and means for driving said second roller with
- said means for mounting comprise:
- first and second cartridges each dimensioned to receive one of said rollers therein;
- said means for holding comprises:
- a pair of elongated support members;
- and
- adjustable means for securing said cartridges to various locations along a length of said support members, thereby maintaining said cartridges in a substantially parallel spaced apart position;
- and
- wherein each of said cartridges comprises:
- means for rotatably mounting one of said rollers and one of said motors within said cartridge;
- and
- means for coupling said one of said motors to said one of said rollers.
15 more elements
A display apparatus which comprises:
- a scroll having a leading end and a trailing end;
- a first roller having said leading end wound thereupon;
- a second roller having said trailing end wound thereupon;
- resiliently detachable means for rotatively mounting said first and second rollers;
- means for holding said first and second rollers in a substantially parallel and adjustably spaced-apart position in relation to each other;
- a first motor and means for driving said first roller with said first motor;
- a second motor and means for driving said second roller with said second motor;
- and
- wherein said means for mounting comprise:
- first and second cartridges each dimensioned to receive one of said rollers therein;
- wherein said means for holding comprises:
- a pair of elongated support members;
- and
- adjustable means for securing said support members to said cartridges, thereby maintaining said cartridges in a substantially parallel spaced apart position;
- wherein each of said cartridges comprises:
- means for rotatably mounting one of said rollers and one of said motors within said cartridge;
- and
- means for coupling said one of said motors to said one of said rollers;
- wherein said means for holding further comprises:
- a pair of scroll guides sized, dimensioned and positioned to provide tracking for said scroll as it travels between said first and second cartridge;
- and,
- adjustable means for securing said scroll guides to said cartridges;
- wherein said support members and said scroll guides are substantially perpendicular to both of said cartridges;
- and
- wherein said adjustable means for securing said scroll guides to said cartridges comprise:
- a plurality of cavities embedded in each of said cartridges;
- and,
- each of said scroll guides having two ends, each end terminating in a prong sized and dimensioned to engage one of said cavities.
25 more elements
A display apparatus which comprises:
- a scroll having a leading end and a trailing end;
- a first roller having said leading end wound thereupon;
- a second roller having said trailing end wound thereupon;
- resiliently detachable means for rotatively mounting said first and second rollers;
- means for holding said first and second rollers in a substantially parallel and adjustably spaced-apart position in relation to each other;
- a first motor and means for driving said first roller with said first motor;
- a second motor and means for driving said second roller with said second motor;
- means for controlling movements of said scroll between said first and second rollers;
- said means for controlling comprise:
- a plurality of spaced-apart frame indicia located along said scroll, and at least one scroll-end indicator located proximately to one of said ends;
- means for detecting said indicia and said end indicator;
- and
- means responsive to said means for detecting, for temporarily disconnecting a first drive voltage from said first motor and a second drive voltage from said second motor upon detection of one of said indicia and for reversing the polarity of said drive voltages upon detection of said end indicator.
10 more elements
Dependencies are inferred from the claim text.