Drafting device for use with computers

Details Drafting device for use with computers Drafting device for use with computers

1983-06-02

1984-12-04

Stearns, Richard R.

Geometrical instruments

Scriber

446454, 446143, B43L 1300

Patent

active

044855559

ABSTRACT:
A drawing device having a platform from which a marking instrument is suspended and wheels for moving the instrument over the surface of a drawing medium, a pair of these wheels being mounted equidistantly on opposite sides of the instrument, each of the pair of wheels being mounted to rotate freely, another of these wheels being a drive wheel depending from the platform and separated from the instrument on a line therefrom perpendicular to a line connecting the pair of wheels and the instrument. The device has an arrangement for moving the drive wheel to cause the drawing device to move and for varying the angle at which the drive wheel moves.

REFERENCES:
patent: 3638319 (1972-02-01), Barlow et al.
patent: 3648373 (1972-03-01), Morrison et al.
patent: 3726019 (1973-04-01), Adler
patent: 4277893 (1981-07-01), Munther

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