Cupel

Details Cupel Cupel

1981-05-14

1983-02-08

Rutledge, L. Dewayne

Metallurgical apparatus

Means for holding or supporting work

Receptacle

75 79, 373122, 422102, 432262, 432265, F27B 1410, C22B 1100, C22B 1300

Patent

active

043725430

ABSTRACT:
A cupel for the fire assaying of ore samples is provided having an improved configuration comprising a primary hemispherical cavity within which is disposed a secondary hemispherical cavity. The secondary cavity has a radius of curvature no greater than one half that of the primary cavity, and extends in a downward direction beyond the lowest extreme of the primary cavity. A transverse lip serves as an upper ridge for the secondary cavity.

REFERENCES:
patent: 777725 (1904-12-01), Fox
patent: 2383353 (1945-08-01), Steele
patent: 4202538 (1980-04-01), Shimada et al.
patent: 4303616 (1981-12-01), Kano et al.

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