Typewriter with an erasing apparatus

Details Typewriter with an erasing apparatus Typewriter with an erasing apparatus

1981-12-21

1983-11-01

Crowder, Clifford D.

Typewriting machines

Means auxiliary to typewriting function

Means for correcting typing errors

400 54, B41J 2916

Patent

active

044127553

ABSTRACT:
A typewriter driven by an electric motor and provided with a ribbon vibrator for moving an erase ribbon in place of an ordinary printing ribbon as an occasional substitution from original position to printing position according to operation of a printing device for common use to both to erase a mistyped character. The ribbon vibrator is normally retained in non-operative status by a retaining member, which is moved in response to depression of a correction key to a predetermined evacuation position to allow the ribbon vibrator to operate and locked there by a lock member. The lock member is associated with not only a release key but also a manual switch member for controlling power supply to the electric motor. The engagement between the lock member and the retaining member is released in response to a turning operation of the manual switch member to OFF position for automatically restoring the ribbon vibrator to the non-operative status.

REFERENCES:
patent: 3349886 (1967-10-01), Madison et al.
patent: 3718243 (1973-02-01), Chvatlinsky
patent: 3882990 (1975-05-01), Genesio
patent: 4108557 (1978-08-01), Skrzipek et al.
patent: 4309118 (1982-01-01), Terashima

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