Geometrical instruments – Scriber – Pantographic
Patent
1998-09-16
2000-10-31
Bennett, G. Bradley
Geometrical instruments
Scriber
Pantographic
33 2301, B43L 1310
Patent
active
061383651
ABSTRACT:
A hobbyist pantograph is provided that includes a base, and an arm assembly substantially in the shape of a parallelogram that rotates about a vertical and horizontal axis of rotation such that movement of a stylus around a template causes proportionate and precise movement of a tool on a workpiece. A main beam of the arm assembly remains substantially horizontal. The stylus and the tool are received in free ends of the arm assembly. The stylus is spring-loaded and adapted to receive a variety of inserts. The free end of the arm assembly that receives the tool includes a tool holder adapter clamp into which an adapter may be fitted to accept a wide variety of tools which the hobbyist may already own. The tool may be motorized or manual. A method of using the pantograph is also provided.
REFERENCES:
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patent: 2782505 (1957-02-01), Guischard
patent: 2881521 (1959-04-01), Pearson, Jr.
patent: 3496795 (1970-02-01), Dinnendahl
patent: 3570129 (1971-03-01), Del Vecchio
patent: 3956828 (1976-05-01), Kloweit
patent: 4448120 (1984-05-01), Richardson et al.
The Green Engraver, promotional filer, Apr. 1951.
Bennett G. Bradley
Moy Jeffrey D.
Weiss Jeffrey
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