Ellipsograph

Details Ellipsograph Ellipsograph

1984-12-06

1986-02-18

Stearns, Richard R.

Geometrical instruments

Scriber

Curved line

33 304, B43L 1104

Patent

active

045703442

ABSTRACT:
A scriber arm mounted to two synchronized cranks, one of which defines the minor axis of the ellipse while the other defines the major axis.

REFERENCES:
patent: 731018 (1903-06-01), Carlton
patent: 1304494 (1919-05-01), McNeil
patent: 2414750 (1947-01-01), Loucks, Jr.
patent: 2913823 (1959-11-01), Robinson

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