C - Chemistry – Metallurgy – 03 – B
Patent
C - Chemistry, Metallurgy
03
B
49/4
C03B 18/02 (2006.01)
Patent
CA 1054371
ABSTRACT OF THE DISCLOSURE Disclosed is a method and apparatus for manufacture of flat glass by the float process and in particular relates to an apparatus for making flat glass wherein the apparatus is of the type having a glass forming chamber having a bottom and side portions for containing a pool of supporting molten metal. Delivery means at the entrance end of the forming chamber deliver a supply of molten glass to the forming chamber to provide a layer of molten glass on the pool of supporting molten metal wherein the molten glass as it advances along the molten metal is cooled to form a continuous glass ribbon of a specified thickness wherein at least a portion of the cooling of the glass being by transfer of heat to the molten metal. Means are provided for continuously removing the glass ribbon from the forming chamber. Movable dam barriers are mounted on the bottom of the forming chamber, each of the dam barriers comprising an outer cover of material which is substantially non-reactive with the molten metal and an inner body of material having a density greater than that of the molten metal. The invention also pertains to the movable dam barriers per se.
305241
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