Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1986-03-21
1987-06-02
Lindsay, Robert
Glass manufacturing
Processes
Forming product or preform from molten glass
65 15, 65 19, 65324, 65325, 65356, 251205, 251326, C03B 37085
Patent
active
046700323
ABSTRACT:
A valve apparatus for the precise regulation of a stream of molten material such as molten rock or slag as it issues from a primary melter or holding device, comprising a frame retaining a valve, the valve comprising a pair of plate-form valve members, one fixed and one movable with respect to the other, each having an aperture or orifice provided therein. Maximum rate of discharge occurs when the apertures are in juxtaposition, and flow cut-off occurs when the apertures are not in juxtaposition. Power operated means is provided for the movable valve member to obtain proper stream regulation or complete cut-off. Each valve member is formed of a plate of metal having an internal channel through which water is circulated to reduce the temperature of the valve member and to prevent its destruction by overheating.
REFERENCES:
patent: 1199044 (1916-09-01), Beebe
patent: 2175407 (1939-10-01), Peiler
patent: 3436023 (1969-04-01), Thalmann
patent: 3511261 (1970-05-01), Bick et al.
patent: 4042207 (1977-08-01), Nehrlich et al.
patent: 4106921 (1978-08-01), Porter
patent: 4463930 (1984-08-01), Vanvakas
patent: 4573616 (1986-03-01), Shapland
Didrick Robert M.
Kurlandsky Samuel
Lindsay Robert
Robinson Robert H.
USG Acoustical Products Company
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