Apparatus for the manufacture of sheet glass on a molten bath

Claim 1

APPARATUS FOR THE MANUFACTURE OF SHEET GLASS, COMPRISING A COMPARTMENT CONTAINING A BATH OF MOLTEN MATERIAL ON WHICH SLIDES A RIBBON OF GLASS AND HAVING SIDE WALLS SPACED APART A DISTANCE GREATER THAN THE WIDTH OF THE GLASS RIBBON, A PLURALITY OF SUBSTANTIALLY VERTICALLY DISPOSED DISCS HAVING INNER, VERTICALLY DISPOSED, RIBBON ENGAGEABLE FACES LOCATED BETWEEN SAID SIDE WALLS AND THE SIDE EDGES OF THE GLASS RIBBON, AND MEANS ASSOCIATED WITH SAID SIDE WALLS FOR SUPPORTING SAID DISCS FOR ROTATIONAL MOVEMENT IN PLANES PARALLEL TO THE SIDE EDGES OF THE GLASS RIBBON AND PARTIALLY IMMERSED IN THE BATH OF MOLTEN MATERIAL, SO THAT THE INNER FACES OF SUCH DISCS ARE ENGAGEABLE BY THE SIDE EDGES OF THE GLASS RIBBON AND CONTROL THE WIDTH OF THE GLASS RIBBON, A ROLLER CONNECTED TO EACH OF SAID DISCS AND HAVING A ROTATIONAL AXIS COMMON WITH THE ROTATIONAL AXIS OF ITS ASSOCIATED DISC, SAID ROLLER HAVING A DIAMETER LESS THAN THAT OF SAID DISC, AND PROJECTING INWARDLY FROM THE INNER FACE OF SAID DISC SO AS TO OVERLIE AND ENGAGE A SIDE EDGE PORTION OF THE GLASS RIBBON.