Glass manufacturing – Processes – Fusion bonding of glass to a formed part
Patent
1975-04-07
1976-05-11
Lindsay, Jr., Robert L.
Glass manufacturing
Processes
Fusion bonding of glass to a formed part
65 79, 65156, 65307, C03B 2322, C03B 904
Patent
active
039559548
ABSTRACT:
Stemmed glassware is produced by a method and apparatus in which the stem is formed separately and is subsequently joined to the cup at the final phase of the blowing operation of the cup glass. In the apparatus a first rotatable platen having cup molds is provided for blowing of the cups and a second rotatable platen having stem molds is provided for forming the stems. A drop of glass for producing the stems is dropped through a very short distance of about 20 to 40 mm. to prevent excessive cooling of the glass drop and to assist in centering the glass drop in longitudinally divided stem molds. A ring centers the mold halves of the stem molds and a surface on the ring molds a part of the stem base. The second platen rotates the stem molds through a pressing station at which the glass drop is pressed to form the stem to a transfer station at which a transfer means transfers the finished stems from the second rotatable platen and attaches the stems to the cups on the first rotatable platen.
REFERENCES:
patent: 509250 (1893-11-01), Schaub
patent: 1798308 (1931-03-01), Cornwell
patent: 1853002 (1932-04-01), Howard
patent: 1902140 (1933-03-01), Rowe
patent: 3130028 (1964-04-01), Seymour
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