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US 3,939,963 AGranted
Type correction aid
OwnerJohn Barchiloninventor
Life of this patent
Estimating the term…
Abstract
A device for use on a typewriter comprising a transparent sheet which is rotatable and translatable on the typewriter paper bar and may be positioned over a paper in the typewriter in front of type hammer striking position. The device aids in aligning a paper in the typewriter for insertion of a character in a previously typed paper.
Claims5
An aid for positioning a paper in a typewriter which includes a line guide, a paper bar and a paper platen where the paper bar has bushings thereon which space the bar from the platen;
- said aid comprising a transparent strip of material having at least a portion thereof shaped on a radius of curvature less than the radius of curvature of the platen, means on said strip attachable to a paper bar so that said strip is rotatable and slidable on the paper bar, said strip extendible from a paper bar with the smaller radius portion over and about a platen behind a line guide.
Dependencies are inferred from the claim text.