摘要:
A method of manufacturing glass sheets from molten glass contained in a vertical drawing chamber includes the step of placing a stratified liquid layer on the mass of molten glass, the stratified liquid layer comprising at least two phases of densities different to each other, and vertically drawing a glass sheet from the glass mass through the stratified liquid layer.
摘要:
Method and apparatus for improving the quality of a drawn flat glass ribbon by providing for a flow of gas currents between the annealing lehr and the drawing chamber along paths which are in addition to the usual slot that the glass ribbon passes through when moving from the drawing chamber to the annealing lehr. In certain embodiments gas from the lower portion of the drawing chamber moves into the annealing lehr through special means which are provided.
摘要:
An improved lip-tile and mounting apparatus for use in the drawing chamber of a window glass furnace in which a plurality of axially aligned refractory segments are compressed together between end bearing plates and independently suspended from a continuous, fluid-cooled overhead beam. A recess provided along the bottom of the lip-tile contains an auxiliary radiant heating element. The rearward bottom edge of the lip-tile projects into a sealing member containing a body of loose granular material to thereby create an elongated seal between the pot chamber and the drawing chamber along the rear pot wall.
摘要:
Drawing sheet glass from a mass of molten glass through a body of protective material. The surface of the mass of molten glass from which the sheet is being formed is covered, and the surfaces of the newly formed sheet are surrounded by, a relatively dense fluid to protect the sheet from adverse temperature and atmospheric conditions in this area. The fluid is inert and noninjurious to the glass at the forming temperatures, and may be either a heavy gas or a light liquid.
摘要:
SKIMMING THE SURFACE OF THE POOL OF MOLTEN GLASS ADJACENT THE REAR WALL OF THE DRAW POT IN AN ELECTRICALLY HEATED, COLBURN TYPE SHEET GLASS PRODUCING APPARATUS. AN L-SHAPED SKIMMER SUPPORTED UPON THE REAR POT WALL INCLUDES A VERTICAL LEG EXTENDING INTO THE POOL OF MOLTEN GLASS ALONG THE LENGHT OF THE REAR POT WALL PARALLEL TO AND AT A SHORT DISTANCE THEREFROM TO TRAP PARTICLES OF REFRACTORY ERODED FROM THE SURFACE OF THE REAR POT WALL AND PREVENT THE PARTICLES FROM BEING DRAWN INTO THE SHEET AND FORMING POT LINES THEREIN.
摘要:
CONTROLLING THE TEMPERATURE OF A SHEET OF GLASS BEING DRAWN UPWARDLY FROM A BATH OF MOLTEN GLASS AND DEFLECTED INTO A SUBSTANTIALLY HORIZONTAL PLANE ABOUT A BENDING MEMBER WHILE SEPARATED THEREFROM BY A FLUID FILM. HEAT REMOVAL FROM THE VERTICALLY RISING SHEET AND AIR CURRENTS WITHIN THE DRAWING CHAMBER ARE REGULATED SO THAT A RIBBON OF UNIFORM THICKNESS IS FORMED AND AS THE RIBBON IS DEFLECTED ABOUT THE BENDING MEMBER ITS TEMPERATURE IS UNIFORM FROM SIDE TO SIDE AND IT IS SUFFICIENTLY PLIABLE TO FOLLOW THE COUTOUR OF THE BENDING MEMBER WITHOUT DRAGGING OVER CERTAIN AREAS THEREOF.