Engraving machines

Details Engraving machines Engraving machines

1978-11-13

1980-03-18

Haroian, Harry N.

Geometrical instruments

Scriber

Pantographic

B43L 1310

Patent

active

041932005

ABSTRACT:
An engraving machine of the pantograph type wherein long life and precision is obtained in plastic or other soft materials by offsetting upper and lower sections of the pantograph arms in a plane perpendicular to the axis of the pivot bores and shafts thus reducing the effective diameter of the bores to correct the shaft to bore fit as a result of wear and manufacturing tolerances.

REFERENCES:
patent: 1234808 (1917-07-01), Roy
patent: 2627658 (1953-02-01), Green
patent: 2631375 (1953-03-01), Gleason
patent: 2652292 (1953-09-01), Sabee
patent: 2872838 (1959-02-01), Vogel
patent: 3160956 (1964-12-01), Mercorelli
patent: 3496795 (1970-02-01), Dinnendahl

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