Process and apparatus for automatically engraving stone memorial

Details Process and apparatus for automatically engraving stone memorial Process and apparatus for automatically engraving stone memorial

1993-08-09

1996-04-30

Rachuba, Maurina T.

Abrading

Abrading process

Utilizing shield

451 30, 451 81, 451 87, 451 89, 451100, B24C 100

Patent

active

055120059

ABSTRACT:
The present invention relates to process and apparatus for automatically engraving stone memorial markers comprised of granite or marble. The markers have their polished facing surfaces covered with a cut-out blast-resistant stencil having prescribed lettering, numerals, decorative patterns and the like. The markers are conveyed through a sand blast chamber at a uniform rate and plural direct-air-feed nozzles are moved uniformly transversely thereover to effect precisely uniform engraving of the facing surfaces. The engraving is more precisely defined to a prescribed uniform depth with finer detail than heretofore possible by manual or other automated single-nozzle methods. The plural nozzles are essentially continuously fed with pressurized air and blast cutting media to obtain faster and more accurate engraving.

REFERENCES:
patent: 2617225 (1952-11-01), O'Brien
patent: 4133919 (1979-01-01), Parsons
patent: 4897969 (1990-02-01), Balhorn
patent: 5085016 (1992-02-01), Rose
patent: 5197234 (1993-03-01), Gillenwater

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