Glass ware etching apparatus

Details Glass ware etching apparatus Glass ware etching apparatus

1981-05-15

1984-02-21

Schmidt, Frederick R.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51436, 51439, 51310, B24C 304, B24C 504, B24C 900

Patent

active

044321694

ABSTRACT:
The glassware etching apparatus etches glassware or other workpieces with abrasive grit which is entrained in an air flow. The etching apparatus includes a cabinet having a work surface, a transparent shield over the work surface and upper and lower supporting shelves below the work surface. A foamed plastic workholder for receiving the workpiece to be etched is mounted on the work surface. A venturi structure for entraining abrasive grit in the air flow is mounted in alignment with the workholder on the upper shelf. A linear tube extending from the venturi structure directs the air flow with entrained grit toward the workholder. The air flow is generated by vacuum cleaner-type motor-impellers in fluid connection with the venturi structure. Grit rebounding from the workpiece is trapped by a fabric filter which extends from the bottom of the work surface around the directing tube. A tapered element is connected with the bottom of the filter and the venturi structure for channelling the collected grit back to the venturi structure for reentrainment.

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