Thermal control of the bead portion of a glass ribbon

An apparatus for making a laminate glass ribbon,

• the glass ribbon having:
• a center laminate region,
• a first edge,
• a second edge,
• a first bead portion which begins at the first edge and extends towards the center laminate region,
• a second bead portion which begins at the second edge and extends towards the center laminate region,
• the first bead portion and the second bead portion comprise the core glass on opposite edges of the laminate ribbon,
• a third bead portion which begins away from the first edge and extends towards the center laminate region,
• a forth bead portion which begins away from the second edge and extends towards the center laminate region,
• the third bead and the forth bead portions comprise the clad glass of the laminate glass ribbon,
• a first bead trough region between the first and third bead portions, and
• a second bead trough region between the second and fourth bead portions, the first and second bead trough regions comprise the core glass;
• the apparatus comprises:
• a bead thermal conditioning region in the laminate draw region including:
• a fluid source oriented to selectively apply a first fluid proximate to at least one of the first, second, third, or fourth bead portions, and the fluid source is oriented to selectively apply a second fluid to the bead trough regions of the laminate glass ribbon,
• wherein the fluid source comprises:
• a source of a cooled fluid directed toward the first and second beads, and the third and fourth beads;
• and
• a source of a heated fluid directed toward the first and second bead troughs.