Advancing device in electrically driven typewriters and similar

Details Advancing device in electrically driven typewriters and similar Advancing device in electrically driven typewriters and similar

1981-10-16

1983-09-20

Sewell, Paul T.

Typewriting machines

For line-spacing by incremental rotation of platen

For multi-incremental rotation

400551, 400568, B41J 1136, B41J 1914

Patent

active

044052480

ABSTRACT:
In an advancing device for the motorized vertical displacement of a record carrier in an electrically driven office machine, which device includes an operating element mounted for movement in either one of two directions from a zero position, and members responsive to movement of the operating element in either one of its two directions for displacing such carrier in a respective vertical direction corresponding to the direction of movement of the operating element, the members are made to be responsive to movement of the operating element in at least one direction from the zero position for advancing the record carrier at a rate which increases as the extent of displacement of the operating element from the zero position increases.

REFERENCES:
patent: 2989680 (1961-06-01), Weiser et al.
patent: 3618738 (1971-11-01), Boyatt et al.
IBM Technical Disclosure Bulletin, vol. 22, No. 5, Oct. 1979, pp. 1760-1763.

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