Ellipsograph drafting apparatus

Details Ellipsograph drafting apparatus Ellipsograph drafting apparatus

1976-03-18

1977-09-06

Aegerter, Richard E.

Geometrical instruments

Scriber

Curved line

33 30R, B43L 1104

Patent

active

040458750

ABSTRACT:
This invention is an ellipsograph drafting apparatus operable to draw ellipses of any desired ratio of major and minor axes limited only by practical size of the device. The ellipsograph drafting apparatus includes a main support means, an elliptical control means, and an intermediate connector means connecting the elliptical control means to the main support means. The elliptical control means includes a marking instrument and actuator assembly which is operable to draw ellipses on a support surface through preselected movement of a pivot arm and slide assembly in a three dimensional manner.

REFERENCES:
patent: 828372 (1906-08-01), Becker
patent: 1007910 (1911-11-01), Baker
patent: 3026617 (1962-03-01), Jendrisak

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