Ellipsograph

Details Ellipsograph Ellipsograph

1981-07-27

1982-11-02

Haroian, Harry N.

Geometrical instruments

Scriber

Curved line

B43L 1104

Patent

active

043566332

ABSTRACT:
An ellipse drawing device is disclosed which utilizes mounted on its lower surface a rotary arm and an elongated plate in conjunction, generating a straight line motion of a point on the elongated plate, grouped in perpendicular relation to the grooves on its upper and parallel surface to guide a stylus carrying arm in the desired course.

REFERENCES:
patent: 717082 (1902-12-01), Dart
patent: 4148144 (1979-04-01), Stiles
patent: 4174572 (1979-11-01), Mikulin

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