METHOD AND APPARATUS FOR REDUCING HEAT LOSS FROM EDGE DIRECTORS IN A GLASS MAKING PROCESS
First Claim
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1. An apparatus for drawing a glass ribbon comprising:
- a forming body for supplying a glass ribbon, the forming body comprising converging forming surfaces that join together at a root;
and edge director intersecting the root;
an edge roll assembly disposed below the edge director comprising;
a contact member for contacting an edge portion of the glass ribbon;
an edge roll shaft coupled to the contact member; and
a shroud member disposed about the shaft proximate the contact member so that a gap exists between an outside surface of the shaft and an inside surface of the shroud member.
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Abstract
An apparatus for drawing a glass ribbon including a forming body having an edge director attached thereto, and an edge roll assembly disposed below the edge director, the edge roll assembly comprising a contact member coupled to the edge roller shaft and a thermal shroud disposed about the shaft to reduce heat loss from the edge director. A method of drawing glass using the edge roll assembly is also described.
16 Citations
19 Claims
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1. An apparatus for drawing a glass ribbon comprising:
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a forming body for supplying a glass ribbon, the forming body comprising converging forming surfaces that join together at a root; and edge director intersecting the root; an edge roll assembly disposed below the edge director comprising; a contact member for contacting an edge portion of the glass ribbon; an edge roll shaft coupled to the contact member; and a shroud member disposed about the shaft proximate the contact member so that a gap exists between an outside surface of the shaft and an inside surface of the shroud member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An edge roll assembly for drawing a glass ribbon from a forming body comprising;
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a contact member for contacting an edge portion of the glass ribbon; an edge roll shaft coupled to the contact member; and a shroud member disposed concentrically about the shaft so that a gap exists between an outside surface of the shaft and an inside surface of the shroud member. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of drawing glass comprising;
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flowing molten glass over a forming body to produce a ribbon of glass, the molten glass flowing over at least one edge director; contacting the ribbon of glass with an edge roll assembly comprising; a contact member for contacting an edge portion of the glass ribbon; an edge roll shaft coupled to the contact member; and a shroud member concentrically disposed about the shaft proximate the contact member so that an annular gap exists between an outside surface of the shaft and an inside surface of the shroud member to reduce radiative heat loss from the edge director. - View Dependent Claims (18, 19)
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Specification