Method of and apparatus for severing a glass sheet

Details Method of and apparatus for severing a glass sheet Method of and apparatus for severing a glass sheet

1981-12-15

1984-08-21

Kazenske, E. R.

Severing by tearing or breaking

Methods

With preliminary weakening

B26F 300

Patent

active

044665628

ABSTRACT:
A subsurface score is imposed in one surface of a glass ribbon at the bulb edge and an open score imposed in the opposite surface aligned with the subsurface score. The ribbon is cut into lehr ends after which bending moment forces are applied about the scores to propagate the open score toward the subsurface score to sever the bulb edge from the ribbon to provide a glass sheet having substantially smooth cut edges.

REFERENCES:
patent: 3215345 (1965-11-01), Ferguson
patent: 3717290 (1973-02-01), Bentley et al.
patent: 3865673 (1975-02-01), DeTorre
patent: 3998616 (1976-12-01), Farabaugh
patent: 4057184 (1979-11-01), Michalik
patent: 4140820 (1979-02-01), DeTorre
patent: 4196830 (1980-04-01), Oravitz et al.
patent: 4225070 (1980-09-01), Dahlberg et al.
patent: 4285451 (1981-08-01), Ferraino
patent: 4291824 (1981-09-01), DeTorre

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