Method and apparatus for curving sheets in the plastic state

Details Method and apparatus for curving sheets in the plastic state Method and apparatus for curving sheets in the plastic state

1976-05-25

1977-10-18

Kellogg, Arthur D.

Glass manufacturing

Processes

Reshaping or surface deformation of glass preform

65104, 65273, 65285, C03B 2302

Patent

active

040544389

ABSTRACT:
The sheet to be curved, such as glass at a softening temperature, is advanced on a fixed curved bed formed by a series of curved rods having angles of inclination which provide the bed with an increasing curvature profile. The edges of the sheet gradually sag as the sheet advances. The curved bed is followed by a bed having a constant profile formed by curved rods having the same inclination. The peaks of the rods advantageously lie in a straight line. Means are provided for simultaneously changing the inclinations of the curved rods when sheets of a different curvature are to be made.

REFERENCES:
patent: 3223501 (1965-12-01), Fredley et al.
patent: 3545951 (1970-12-01), Nedelec
patent: 3801298 (1974-04-01), Bezombes

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