| 摘要 |
820,511. Glass-drawing. CORNING GLASS WORKS. Oct. 29, 1956 [Nov. 7, 1955], No. 32932/56. Class 56. A glass-drawing die comprises a wedgeshaped hollow member 10 whose rectangular faces have a rounded meeting edge 15, with a slot 12 passing transversely through the rectangular faces. The die projects upwardly into the molten glass and is formed from refractory materials such as platinum. U.S.A. Specification 2,422,466 is referred to. |
