Ribbon feed and lift mechanism for a typewriter

Details Ribbon feed and lift mechanism for a typewriter Ribbon feed and lift mechanism for a typewriter

1979-10-30

1981-01-27

Eickholt, E. H.

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

4006971, B41J 3354

Patent

active

042472105

ABSTRACT:
In a daisy wheel or rotary print wheel typewriter, a single motor is employed to accomplish both ribbon lift and feed for typewriter ribbon and correction ribbon loaded in a cartridge assembly. A single motor drive moves the cartridge assembly support about an axis to present the typewriter ribbon or the correction ribbon to the print point at the print line. When the elevation of the cartridge assembly about the axis is such to permit normal typing upon the typewriter ribbon, only the feed ratchet for the ribbon is engaged. Alternatively, when the rotation is greater, for example, for typing on the correction ribbon, the added elevation of the cartridge assembly effects disengagement of the normal ratchet feed for the typewriter ribbon while allowing advancement of the correction ribbon.

REFERENCES:
patent: 3204746 (1965-09-01), Wolowitz
patent: 3397767 (1968-08-01), Hobbs
patent: 3595362 (1971-07-01), Wolowitz
patent: 3747734 (1973-07-01), Norman et al.
patent: 3799316 (1974-03-01), Davidge et al.
patent: 3927746 (1975-12-01), Wolowitz
patent: 3927747 (1975-12-01), Wolowitz
patent: 3997046 (1976-12-01), Wolowitz
patent: 4108557 (1978-08-01), Surzipek et al.
patent: 4172672 (1979-10-01), Oddicini et al.
patent: 4203677 (1980-05-01), Hatsell
"Combination Ribbon Mechanism", IBM Tech. Discl. Bulletin, vol. 23, No. 1, Jun. 1980, pp. 5-6.
"Control Means for Correction Mechanism on a Typewriter", IBM Tech. Discl. Bulletin, vol. 22, No. 10, Mar. 1980, pp. 4634-4636.

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