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US 4,612,030 AGranted
Method and apparatus for making variegated, cathedral, antique or flashed glass in a continuous sheet
OwnerRonald E. Smidsinventor
Life of this patent
Estimating the term…
Abstract
A method and apparatus are disclosed for making ornamental glass. A molten glass mixture, formed into a continuous plastic sheet, is subjected to a single or multiple bilateral stretching before being annealed.
Claims45
A method of making flashed glass in continuous sheet form, comprising:
- heating a first quantity glass with one color and a second quantity of glass with another color to the molten state;
- separately introducing each of the differently colored molten glass into a vessel adjacent to a pair of counterrotating forming rollers such that the differently colored molten glass contact each other along an interface to form a laminated molten glass mixture having two different colored layers;
- feeding the laminated molten glass mixture into the feed side of the pair of forming rollers which press the layers of the laminated molten glass mixture together into a continuous laminated plastic elongated sheet;
- stretching the continuous laminated plastic elongated sheet in the machine direction, i.e., the direction of sheet travel produced by the forming rollers;
- simultaneously with the stretching in the machine direction stretching the continuous laminated plastic elongated sheet in a direction transverse to the machine direction;
- and
- annealing the stretched laminated plastic glass sheet.
4 more elements
A method of making variegated glass in continouous sheet form, comprising:
- heating a first quantity of glass with one color and a second quantity of glass with another color to the molten state;
- separately introducing each of the differently colored glass into a vessel such that the two differently colored molten glass contact each other along an interface;
- stirring the molten glass mixture at the interface to break up and disperse the colors of the two differently colored molten glass in each other to form a multicolored molten glass mixture having a generally serpentine configuration of one color within the other;
- feeding the multicolored molten glass mixture with the generally serpentine color configuration into the feed side of a pair of forming rollers which press the molten glass mixture into a multicolored continuous plastic elongated sheet;
- stretching the continuous plastic elongated sheet in the machine direction, i.e., the direction of sheet travel produced by the forming rollers;
- simultaneously with the stretching in the machine direction stretching the continuous plastic elongated sheet in a direction tranverse to the machine direction;
- and
- annealing the stretched multicolored plastic glass sheet.
5 more elements
A method of making antique glass or the like in continouous sheet form, comprising:
- heating a quantity of glass to the molten state;
- introducing the molten glass into a vessel adjacent to a pair of counterrotating forming rollers;
- feeding the molten glass into the feed side of the forming rollers which press the molten glass into a continuous plastic elongated sheet;
- stretching the continouos plastic elongated sheet in the machine direction, i.e., the direction of sheet travel produced by the forming rollers;
- simultaneously with the stretching in the machine direction stretching the continuous plastic elongated sheet in a direction transverse to the machine direction;
- striating the surface of the stretched continuous plastic elongated sheet transversely across its width to create an antique-looking glass appearance;
- and
- annealing the stretched antique-looking plastic glass sheet.
5 more elements
A method of making cathedral glass or the like in continuous sheet form, comprising:
- heating a quantity of glass to the molten state;
- introducing the molten glass into a vessel adjacent to a pair of counterrotating forming rollers;
- feeding the molten glass into the feed side of the forming rollers which press the molten glass into a continuous plastic elongated sheet;
- stretching the continuous plastic elongated sheet in the machine direction, i.e., the direction of sheet travel produced by the forming rollers;
- simultaneously with the stretching in the machine direction stretching the continuous plastic elongated sheet in a direction transverse to the machine direction;
- and
- annealing the stretched plastic glass sheet.
4 more elements
An apparatus for making flashed glass in continuous sheet form, comprising:
- heating means for heating first and second quantities of differently colored glass to the molten state;
- means for separately introducing each of the differently colored molten glass into a vessel, the vessel providing an interface portion in which the differently colored molten glass can contact each other to form a laminated molten glass mixture having two differently colored layers;
- a pair of counterrotating forming rollers positioned adjacent to the vessel for feeding the laminated molten glass mixture into the feed side of the forming rollers, the forming rollers pressing the layers of the laminated molten glass mixture together into a continuous laminated plastic elongated sheet;
- stretching means for stretching the continuous laminated plastic elongated sheet in the machine direction, i.e., the direction of sheet travel produced by the forming rolls, and for simultaneously with the stretching in the machine direction stretching the continuous laminated plastic elongated sheet in a direction transverse to the machine direction;
- and
- annealing means for annealing the stretched laminated plastic glass sheet.
3 more elements
An apparatus for making variegated glass in continuous sheet form, comprising:
- heating means for heating first and second quantities of differently colored glass to the molten state;
- means for introducing each of the differently colored glass into a vessel, the vessel providing an interface portion along which the differently colored molten glass can contact each other;
- stirring means for stirring the molten glass mixture in the interface portion to break up and disperse the colors of the two differently colored molten glass in each other to form a multicolored molten glass mixture having a generally serpentine configuration of one color within the other;
- a pair of counterrotating forming rollers positioned adjacent to the vessel for feeding the multicolored molten glass mixture with the generally serpentine color configuration into the feed side of the forming rollers, the forming rollers pressing the molten glass mixture into a multicolored continuous plastic elongated sheet;
- stretching means for stretching the continuous plastic elongated sheet in the machine direction, i.e., the direction of sheet travel produced by the forming rollers, and for simultaneously with the stretching in the machine direction stretching the continuous plastic elongated sheet in a direction transverse to the machine direction;
- and
- annealing means for annealing the stretched multicolored plastic glass sheet.
4 more elements
An apparatus for making antique glass or the like in continuous sheet form, comprising:
- heating means for heating a quantity of glass to the molten state;
- means for introducing the molten glass into a vessel adjacent;
- a pair of counterrotating forming rollers positioned adjacent to the vessel for feeding the molten glass into the feed side of the forming rollers, the forming rollers pressing the molten glass into a continuous plastic elongated sheet;
- stretching means for stretching the continuous plastic elongated plastic sheet in the machine direction, i.e., the direction of sheet travel produced by the forming rollers, and for simultaneously with the stretching in the machine direction stretching the continuous plastic elongated sheet in a direction transverse to the machine direction;
- raking means for striating the surface of the continuous plastic elongated sheet transversely across its width to create an antique-looking glass appearance;
- and
- annealing means for annealing the antique-looking plastic glass sheet.
4 more elements
An apparatus for making cathedral glass or the like in continuous sheet form, comprising:
- heating means for heating a quantity of glass to the molten state;
- means for introducing the molten glass into a vessel;
- a pair of counterrotating forming rollers positioned adjacent to the vessel for feeding the molten glass into the feed side of the forming rollers, the forming rollers pressing the molten glass into a continuous plastic elongated sheet;
- stretching means for stretching the continuous plastic elongated sheet in the machine direction, i.e., the direction of sheet travel produced by the forming rollers, and for simultaneously with the stretching in the machine direction stretching the continuous plastic elongated sheet in a direction transverse to the machine direction;
- and
- annealing means for annealing the plastic glass sheet.
3 more elements
An apparatus for making ornamental glass in continuous sheet form, comprising:
- heating means for heating a quantity of glass to the molten state;
- a vessel for receiving the molten glass;
- a pair of counterrotating forming rollers positioned above and adjacent to the vessel for feeding the molten glass substantially vertically to the feed side of the forming rollers to substantially equally expose both surfaces of the molten glass to air prior to reaching the forming rollers, the forming rollers pressing the molten glass into a continouous plastic elongated sheet;
- stretching means for stretching the continuous plastic elongated sheet in the machine direction, i.e., the direction sheet travel produced by the forming rollers, and for simultaneously with the stretching in the machine direction stretching the continuous plastic elongated sheet in a direction transverse to the machine direction;
- and
- annealing means for annealing the plastic glass sheet.
3 more elements
Dependencies are inferred from the claim text.