Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1979-01-26
1980-11-18
Whitehead, Harold D.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
125 30R, B24B 916
Patent
active
042337836
ABSTRACT:
A cutting device is described particularly useful for cutting or grinding the round girdle surfaces of round-cut gems, the cutting device comprising a plurality of cutting heads each formed with a grinding surface on one face defined by a cavity circular in transverse section and having a larger diameter than that of the round surface to be cut. The device further includes a drive for rotating the heads around the longitudinal axis of its respective cavity, and nozzles for supplying liquid to the grinding surfaces of the cavities.
REFERENCES:
patent: 2982057 (1961-05-01), Stanhope
patent: 3020680 (1962-02-01), Soderman
Barish Benjamin J.
Stark Hanoch
Whitehead Harold D.
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