Apparatus for thermally severing glass
AssigneeLibbey-Owens-Ford Co.
InventorsHans W. Boehm, Richard A. Herrington, Waldemar W. Oelke
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Abstract
A method of and apparatus for thermally severing thick glass sheets by applying an energized electrical resistance wire element against the glass surface coincident with the intended line of cut and providing mechanical means adjacent the starting end of the cut to spread the glass portions on opposite sides of the line apart as the cut begins to run from the starting end. A glass spreading arrangement also can be provided at the trailing end of the cut to assure a straight cut along the intended path from end to end.
Claims11
In apparatus for cutting a heavy, thick glass sheet along an intended line of cut, including means for supporting a heavy sheet of glass to be cut and means overlying said glass supporting means for cutting said sheet along an intended line of cut, the improvement which consists in that said glass supporting means comprises a table having a supporting surface against which said sheet of glass rests in position to be cut, said supporting surface having a convex curvature causing said sheet to assume a complementary curvature when resting thereon, said convex supporting surface defining an arc having an axis extending normal to said intended line of cut.
Dependencies are inferred from the claim text.