| 摘要 |
A glassware forming machine contains molten glass and distributes runners of molten glass through a refractory orifice ring having a plurality of discharge holes. The refractory orifice ring includes an annular side wall of uniform cross-section, a bottom wall of uniform thickness, and a discrete number of strengthened areas on the interior of the annular side wall at selected locations equidistant from each pair of the holes. The periphery of each of the holes also has an increased thickness.
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