Combined duplicator and preformer for lapidary use

Details Combined duplicator and preformer for lapidary use Combined duplicator and preformer for lapidary use

1978-09-15

1981-05-19

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51229, B24B 916

Patent

active

042676703

ABSTRACT:
A lapidary machine is provided with a grinding wheel and a removable hinged adjustable fixture arranged to swing toward and away from a grinding surface on the wheel and having an adjustable slide carrying a guide bar and a swing arm on which is journaled an arbor having a chuck for a dop, a template, and a turning knob. The template is swung against a guide surface on the guide bar and turned to establish the grinding pattern of the grinding wheel on a cabochon blank or the like mounted on the dop.

REFERENCES:
patent: 1998642 (1935-04-01), Smith
patent: 3073085 (1963-01-01), Ticino
patent: 3834085 (1974-09-01), Moeller
patent: 3844070 (1974-10-01), Reed
patent: 3861090 (1975-01-01), Lattauzio
patent: 4084352 (1978-04-01), Wheeler
patent: 4110937 (1978-09-01), Bein

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