Correction device for typewriters and the like

Details Correction device for typewriters and the like Correction device for typewriters and the like

1977-02-04

1978-10-17

Sewell, Paul T.

Typewriting machines

Means auxiliary to typewriting function

Means for correcting typing errors

427140, B41J 2936

Patent

active

041205944

ABSTRACT:
A correction device for typewriters and the like, including a material, preferably in liquid form, maintained at a predetermined pressure within a container. The container outlet is coupled through a narrow elongated tube whose dispensing end is positioned upon the typewriter carriage or other device so as to be located immediately across from the last printed character or other symbol. An operating switch activates an electronic circuit for dispensing a measured amount of the material over the last printed character, the color of said material being the same as the paper being printed upon to provide the same effect as erasure of the character. The dispensing of the measured dosage may be accomplished either by electronic or mechanical means. The erasure means may be provided as an integral part of the typewriter unit or as an independent stand-alone accessory.

REFERENCES:
patent: 1423290 (1922-07-01), Zeller
patent: 3756514 (1973-09-01), Brown
patent: 3788442 (1974-01-01), Lehnhardt et al.

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