Drawing instrument or apparatus

Details Drawing instrument or apparatus Drawing instrument or apparatus

1981-03-16

1983-07-05

Haroian, Harry N.

Geometrical instruments

Scriber

Curved line

B43L 1100

Patent

active

043910459

ABSTRACT:
A design drawing instrument for creating a variety of decorative patterns and designs. The instrument includes a frame member having a circular opening and a multi-lobed cam-shaped internal recess therein, and a disc member having a multi-lobed cam-shaped external surface or edge. The disc member is provided with stencil-shaped openings in its surface. The disc member is positioned within the recess formed in the frame so that its surface with stencil-shaped openings, is exposed. By placing a writing instrument, such as a pen, within the stencil opening and tracing along the outline of said opening, the disc is caused to move relative to the frame member and a prescribed design is created on a drawing surface.

REFERENCES:
patent: 1349455 (1920-08-01), Henriksen
patent: 2190071 (1940-02-01), Keppers
patent: 3230624 (1966-01-01), Fisher
patent: 3465445 (1969-09-01), Fisher
patent: 3900956 (1975-08-01), Furuoka et al.

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