Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1980-07-07
1982-01-26
Kellogg, Arthur D.
Glass manufacturing
Processes
Forming product or preform from molten glass
65 86, 65 251, 651822, C03B 1518
Patent
active
043126596
ABSTRACT:
The invention provides method and apparatus for supporting hot glass tubing drawn from a source of molten glass, on a cushion of air. A horizontally elongated chamber is disposed beneath the drawpath of the tubing and an elevated air pressure is maintained in the chamber. The top wall of the chamber defines a V notch in vertical cross section within which the tubing is disposed and one or more openings or slots traversing the vertex portion of the top wall provide an upward flow of air from the chamber to support the tubing being drawn. The dimensions of the openings are selected as a function of the range of diameter and weight of the glass tubing to be supported and the air pressure is selected as a function of the same variables. Air flow cooling of the top portions of the tubing may be provided to reduce bow.
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Panarello Salvatore C.
Schmitzler Edward G.
Click Myron E.
Heberling Richard D.
Kellogg Arthur D.
Owens--Illinois, Inc.
Wilson David H.
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