Severing by tearing or breaking – Methods – With preliminary weakening
Patent
1992-09-01
1994-04-19
Seidel, Richard K.
Severing by tearing or breaking
Methods
With preliminary weakening
225 965, 225 97, 225103, C03B 3303, B26F 300
Patent
active
053038614
ABSTRACT:
A method of, and apparatus for, separating a sheet of glass along a score line on the sheet. The method comprises flexing the glass at the score line along an axis of flexure on the support to pre-stress the glass to a level below the critical stress level, and initiating a break at one end of the score line. The apparatus comprises a support for the sheet, the support defining an axis of flexure for alignment with the score line, at least one movable pressure member spaced above and on one side of the score line, a press head to move the pressure member into contact with the sheet of glass to pre-stress the sheet at the score line, and a break initiator at one end of the score line.
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Allaire Roger A.
Pardue, Jr. William F.
Corning Incorporated
Peterson Milton M.
Seidel Richard K.
Woods Raymond D.
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