Crucible

Details Crucible Crucible

1976-02-26

1978-02-14

Hartary, Joseph W.

Weighing scales

Weigher responsive material control

Rotary

23273SP, 156601, 177132, 177210R, 310104, G01G 1700

Patent

active

040733556

ABSTRACT:
A weighing device for the automatic regulation of a crystal-growing operation includes an upright shaft on which a crucible for a crystal melt is supported. The shaft is journalled for rotation and has limited freedom of movement in downward direction under the weight of the crucible and the melt therein. Weight-responsive signal-generating devices are engaged by the shaft or components associated therewith, so that pressure is exerted upon these devices to different degrees, in dependence upon the weight of the melt in the crucible. These devices produce signals as a function of the weight acting upon them, and these signals in turn control the crystal-growing operation. The shaft is rotatable by a drive arrangement which does not require physical contact with the shaft to rotate the same.

REFERENCES:
patent: 2705762 (1955-04-01), Pile
patent: 2908004 (1959-10-01), Levinson
patent: 2990256 (1961-06-01), Louins
patent: 3259467 (1966-07-01), Rummel
patent: 3822111 (1974-07-01), Suzuki
patent: 3934983 (1976-01-01), Bardsley

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