Abstract: A device and a process for heating glass sheets in horizontal position, to bend them or temper them, by means of two series of resistors, the series being distributed on both sides of the path followed by the glass sheet and on a portion of the length of this path. Each resistor group is distributed in longitudinal zones or in crosswise subzones of various widths along the longitudinal zones, the power furnished to each longitudinal zone being regulated independently of the power furnished to the other longitudinal zones and being distributed in a controlled way between the crosswise zones and the longitudinal zones.

Abstract: A device for forming glass sheets for using the forming process according to which the glass sheets are brought horizontally into a heating furnace then are brought to a forming station where they are transferred individually and vertically to an upper mold exhibiting a radius of curvature less than or equal to the one it is desired to impart to the glass, then are applied against the upper mold by a suction due to a low pressure created on their periphery and in the vicinity of their periphery. The device essentially comprises a suction box in which is placed an upper mold with dimensions slightly less than those of the glass sheet to be shaped and whose lower face, against which the glass sheet is applied, is located on the outside of said suction box.

Abstract: The invention concerns a glass molding process and system according to which glass sheet is heated in a horizontal position in a heating furnace, transferred vertically to an upper mold having a radius of curvature greater than the radius of curvature that it is desired to give the glass sheet and dropped on a bending frame where the glass sinks under the effect of inertia and gravity. Vertical transfer of the glass is obtained by a vacuum created on the periphery of the upper mold.