Patents Assigned to Spectrum Glass Company, Inc.
  • Patent number: 4133666
    Abstract: At least two differently colored components of glass are heated to a molten, viscous state and then combined in a channel shaped forehearth to form a confluent of molten glass in which the starting components remain in discrete domains, delineated by abrupt color transitions at the interfaces between such domains. The confluent flows by gravity to a discharge end of the forehearth, at which the molten glass is fed between a pair of forming rollers which press it into a continuous, elongate sheet of variegated glass. While flowing toward the discharge end of the forehearth, the molten glass is subjected to controlled, limited stirring to break up relatively large domains of homogeneous color into a multitude of smaller randomly dispersed domains characterized by streaks, swirls and waves of individually identifiable colors.
    Type: Grant
    Filed: April 28, 1978
    Date of Patent: January 9, 1979
    Assignee: Spectrum Glass Company, Inc.
    Inventors: Jerry D. Rhodes, Roger B. Ek