Platen clutch mechanism

Details Platen clutch mechanism Platen clutch mechanism

1985-07-10

1987-12-01

Burr, Edgar S.

Typewriting machines

For line-spacing by incremental rotation of platen

By irregular increments of platen rotation

4005591, B41J 1996, B41J 1124

Patent

active

047100460

ABSTRACT:
A printer having a platen mounted on a shaft rotatably and a line indexing driving gear with a releasable clutch mechanism which couples selectively the platen and driving gear for line-by-line indexing or manual indexing of the platen.
The clutch mechanism includes a first clutch means fixed on the shaft and a second clutch means which is moveable along the shaft with a knob.
The driving gear mounted on the shaft rotatably engages with the second clutch.

REFERENCES:
patent: 1021386 (1912-03-01), Uhlig
patent: 1021970 (1912-04-01), Corcoran
patent: 1096791 (1914-05-01), Mohler
patent: 3655023 (1972-04-01), Stanevich
patent: 4247212 (1981-01-01), Wu

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