Glass manufacturing – Means shaping preform from granular material with fusion means
Patent
1978-01-10
1979-12-11
Bashore, S. Leon
Glass manufacturing
Means shaping preform from granular material with fusion means
65 18, 65157, 65DIG4, 65 17, 13 6, 156615, 219121L, 432127, C03B 2320, C03B 1906, B23K 900
Patent
active
041781651
ABSTRACT:
Disclosed is a method and apparatus for forming hollow and cylindrical ingots of amorphous or fused silica and other ingot materials. The ingot is formed from a melt on a deposition surface which is lowered as the ingot is formed at a rate which maintains a constant distance between the deposition surface and a heat source vertically positioned above same. The melt is shaped into a vertical cylinder by at least one forming tool which is a roller member rotatable about a vertical axis. In a preferred embodiment the fixed distance from the heat source is maintained with the aid of the laser beam.
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Bashore S. Leon
Miga Frank W.
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