Geometrical instruments – Scriber – Curved line
Patent
1996-06-25
1998-01-20
Fulton, Christopher W.
Geometrical instruments
Scriber
Curved line
33 181, 446146, B43L 1100
Patent
active
057090335
ABSTRACT:
An improved design drawing device for drawing amorphous patterns is disclosed. The drawing device contains at least one flexible guide bendable into any desired shape and having an outer circumference wall and an inner circumference wall, at least one solid wheel disk which is rotatable about the inner circumference wall of the flexible guide, at least one hole through the solid wheel disk through which a drawing implement is positionable, wherein the solid wheel disk is rotatable about the inner circumference wall or outer circumference wall of the flexible guide when the drawing implement is positioned through the hole positioned through the solid wheel disk, thereby forming a patterned drawing. The flexible guide is made of a soft plastic which preferably surrounds a flexible bar. As the wheel disk revolves around the inner surface of the flexible guide, the teeth of the wheel disk enter the surface of the flexible guide at right angles to lock into the surface of the flexible guide.
REFERENCES:
patent: 1878633 (1932-09-01), Hoferer
patent: 2790245 (1957-04-01), Wilkes
patent: 3230624 (1966-01-01), Fisher
patent: 3465445 (1969-09-01), Fisher
patent: 3724083 (1973-04-01), Mehl
patent: 4825556 (1989-05-01), Goldfarb
Instruction sheet for Spirograph by Kenner (Copyright 1994).
Fulton Christopher W.
Grant Jonathan E.
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