Method and apparatus for curving a glass sheet

Details Method and apparatus for curving a glass sheet Method and apparatus for curving a glass sheet

1987-09-14

1989-02-07

Lindsay, Robert L.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65273, 65287, C03B 23035

Patent

active

048029033

ABSTRACT:
In a method of curving a glass sheet with the aid of a hot gas stream with a large cross sectional area, whereby the glass sheet is pressed against a curving form, in certain prescribed edge regions of the glass sheet in static pressure component of the flowing gas is increased by reducing the flow speed of the flow component (of the hot gas stream) traveling in the radial direction along the surface of the glass sheet, which speed reduction is accomplished by the interposition of barriers in the path of this flow component. The preferred such barriers are pressure baffles (38), which are disposed at certain selected locations on the edge of the curving form (31), said baffles being oriented perpendicularly to the terminal tangents of the forming surface (32) of the curving form (31).

REFERENCES:
patent: 4356018 (1982-10-01), McMaster
patent: 4612031 (1986-09-01), Bennett
patent: 4661139 (1987-04-01), Reese et al.
patent: 4682997 (1987-07-01), Halberschmidt et al.

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