Ellipsograph as a drafting tool

Details Ellipsograph as a drafting tool Ellipsograph as a drafting tool

1991-02-14

1992-06-23

Haroian, Harry N.

Geometrical instruments

Scriber

Curved line

B43L 1104

Patent

active

051231700

ABSTRACT:
An ellipsograph including a connecting rod carrying a collinear rotary end, scriber, and reciprocating end. The rotary end provides rotation about selected circumferences for that end of the connecting rod, while the reciprocating end permits reciprocating movement in response for that end of the connecting rod. Adjustable block members enable selective location of at least the scriber and reciprocating end on the connecting rod. A base portion supports the rotary end and reciprocating end on the drafting material.

REFERENCES:
patent: 520003 (1894-05-01), Lehner
patent: 731018 (1903-06-01), Carlton
patent: 2315479 (1943-03-01), Schwartz
patent: 2636271 (1953-04-01), Lacois

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