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US 4,055,408 AGranted
Forehearth homogenization method and apparatus
AssigneeOwens-Illinois, Inc.
InventorsJohn D. Novak, Joseph W. Sell
Life of this patent
Estimating the term…
Abstract
A forehearth for feeding molten glass to a flow feeder, a set of blenders, and a set of homogenizers are spaced from each other along the length of the forehearth with three evenly spaced vertically positioned elongated plates located between the set of blenders and the set of homogenizers. The particular arrangement provides a system for eliminating, to a great extent, cords at the feeder.
Claims8
Method of mixing and blending molten glass in a forehearth, comprising the steps of:
- rotating a pair of side-by-side blenders upstream of the feeder end of the forehearth, said blenders effectively raising the glass in the zone of their influence;
- rotating a plurality of homogenizers, spaced in a line transverse of the direction of flow of the glass in the forehearth, said homogenizers being between the blenders and the feeder, said homogenizers effectively pushing the glass downward in their zone of influence;
- and
- positioning a plurality of elongated, vertical plates with their lower edge extending adjacent to the bottom of the forehearth with the vertical plane of the face of the plates extending in the direction of the glass flow whereby glass moving from the blender zone to the homogenizer zone is attenuated by the plates and cords free glass is fed to the feeder.
1 more element
Apparatus for mixing and blending molten glass in a forehearth, comprising:
- a pair of laterally positioned blenders upstream of the feeder end of the forehearth, said blenders effetively raising the glass in the zone of their influence;
- a plurality of homogenizers, spaced in a line transverse of the direction of flow of the glass in the forehearth, said homogenizers being positioned between the blenders and the feeder, said homogenizers effectively pushing the glass downward in their zone of influence;
- and
- a plurality of elongated, vertical plates immersed in the molten glass between the blenders and homogenizers, said plates being oriented with their length parallel to the direction of flow of glass in the forehearth whereby glass moving from the blender zone to the homogenizer zone is attenuated by the plates and cord free glass is fed to the feeder.
1 more element
Dependencies are inferred from the claim text.