Glass manufacturing – Processes – Reshaping or surface deformation of glass preform
Patent
1988-09-26
1990-01-16
Kellogg, Arthur
Glass manufacturing
Processes
Reshaping or surface deformation of glass preform
65107, 65273, 65287, 65289, C03B 23023
Patent
active
048940801
ABSTRACT:
Glass sheets are positioned on a shaping rail of an outline shaping mold form movement through a heating lehr and subsequent preliminary sag bending. The mold with the glass sheet supported thereon is positioned between a pair of vertically aligned pressing molds. The lower mold includes a full surface press face corresponding to the final desired curvature of the glass sheet to be shaped. The upper mold includes a peripheral shaping surface and a chamber defined by the shaping surface. After the lower mold lifts the glass sheet off the outline mold and into engagement with the upper mold, gas in the chamber is pressurized to urge those portions of the glass not contacted by the upper mold against the press face of the lower mold.
REFERENCES:
patent: 2123552 (1938-07-01), Helwig
patent: 2131873 (1938-10-01), Goodwillie
patent: 2570309 (1951-10-01), Black
patent: 3068672 (1962-12-01), Black
patent: 3208839 (1965-09-01), Nordberg
patent: 3408173 (1968-10-01), Leflet, Jr.
patent: 3582454 (1971-06-01), Giffen
patent: 3976462 (1976-08-01), Sutara
patent: 4260408 (1981-04-01), Reese et al.
patent: 4260409 (1981-04-01), Reese et al.
patent: 4265650 (1981-05-01), Reese et al.
patent: 4272275 (1981-06-01), Reese
patent: 4274858 (1981-06-01), Claassen et al.
patent: 4290796 (1981-09-01), Reese et al.
patent: 4305746 (1981-12-01), Hagedorn et al.
patent: 4597789 (1986-07-01), Reese
patent: 4756735 (1988-07-01), Cathers et al.
Fisher Joseph J.
Reese Thomas J.
Kellogg Arthur
PPG Industries Inc.
Siminerio Andrew C.
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