Method and apparatus for curving glass sheets

Details Method and apparatus for curving glass sheets Method and apparatus for curving glass sheets

1979-05-14

1980-10-07

Kellogg, Arthur D.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65104, 65245, 65253, 65275, 65273, C03B 2302

Patent

active

042266084

ABSTRACT:
The flat glass sheet to be curved, which is at softening temperature, is advanced in a horizontal position on a curved bed formed by a series of flexible shaping rolls including coiled springs having progressively increasing degrees of curvature such that as the sheet moves thereon it will be caused to bend under its own weight to gradually assume the curvature of the shaping rolls. The shaping rolls are provided with end sections which are angularly adjustable to independently alter the degree of curvature of the rolls. The shaping bed is followed by a second bed formed of flexible rolls having a constant curvature on which the curved sheet is supported and subjected to a tempering and or cooling procedure. Means is also provided for driving the rolls of the shaping bed and the rolls of the second bed to move the glass sheets forwardly at a constant speed.

REFERENCES:
patent: 3485618 (1969-12-01), Ritter, Jr.
patent: 3545951 (1970-12-01), Nedelec
patent: 3934996 (1976-01-01), Frank
patent: 4054437 (1977-10-01), Ueberwolf et al.
patent: 4139359 (1979-02-01), Johnson et al.

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