Electrographic apparatus and hand rest for use therewith

Details Electrographic apparatus and hand rest for use therewith Electrographic apparatus and hand rest for use therewith

1977-05-02

1978-12-12

Robinson, Thomas A.

Telegraphy

Systems

Position coordinate determination for writing

2481181, G08C 2100

Patent

active

041297466

ABSTRACT:
Electrographic apparatus, that is apparatus for obtaining electrical signals related to the movement of a point, such as a pen or stylus, over a pressure sensitive surface. The apparatus comprises a hand-supporting plate movable relative to the pressure sensitive surface to provide a convenient hand-rest during writing or drawing without the hand touching the pressure sensitive surface.

REFERENCES:
patent: 607675 (1898-07-01), Barr
patent: 1869910 (1932-08-01), Omegna
patent: 3480728 (1969-11-01), Chandler
patent: 3885097 (1975-05-01), Pobgee

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