Reproportioning graphical pantograph

Details Reproportioning graphical pantograph Reproportioning graphical pantograph

1981-09-29

1983-08-09

Stearns, Richard R.

Geometrical instruments

Scriber

Pantographic

33 23D, B43L 1310

Patent

active

043970907

ABSTRACT:
A graphical pantograph having four pivotable bars and a guide track in which two guide pins slide. The pantograph is provided with a tracer pin and a marker pin which extend through a common plane. The guide pins and the tracer and marker pins can be interchangeably placed at the pivots of two neighboring bars or at any free ends of the bars so as to reproportion the image to be reproduced in any desired ratio and angle.

REFERENCES:
patent: 364043 (1887-05-01), Riche
patent: 2734271 (1956-02-01), Moriarty
patent: 2885786 (1959-05-01), Badgett
patent: 3184850 (1965-05-01), Muller
patent: 3555686 (1971-01-01), Hatem

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