Error ribbon elevation and transport mechanism for typewriters a

Details Error ribbon elevation and transport mechanism for typewriters a Error ribbon elevation and transport mechanism for typewriters a

1981-10-21

1983-10-25

Sewell, Paul T.

Typewriting machines

Means auxiliary to typewriting function

Means for correcting typing errors

400212, 4002361, B41J 2936, B41J 3318

Patent

active

044115423

ABSTRACT:
Disclosed is a mechanism so arranged that a relatively weak power source can be employed to effect error ribbon elevation and incremental feed. A bridge which is pivotably mounted on a frame carries a rotatably mounted ratchet and a pivotably mounted pawl which, when the bridge is rotated by a magnet to elevate the bridge, is caused to react with a frame part and pivot relative to and to drive the ratchet to feed ribbon.

REFERENCES:
patent: 3880271 (1975-04-01), Hebron
patent: 3997046 (1976-12-01), Wolowitz
"Erase Ribbon Life and Advancing Mechanism"; Mathews, R. D.; IBM Technical Disclosure Bulletin; vol. 19, Number 7; Dec. 1976; p. 2393.

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