Abstract: A device and a process for manufacturing a bent individual glass sheet including a peripheral compression belt, wherein the process includes the heating thereof to its bending temperature in a furnace, the individual bending thereof, and the general cooling thereof. One zone of the sheet at least partially inside the peripheral compression belt, referred to as locally cooled zone, undergoes, after the heating of the sheet, a local cooling faster than the general cooling, when the sheet is at a temperature of at least 530° C. The cutting of the sheet on the locally cooled zone creates edges having edge compressive stresses.

Abstract: A tool for local cooling by contact of a glass sheet at a temperature higher than 450° C., known as a contact tool, includes a contact face suitable for coming into contact with the glass sheet, the tool including an internal pipe for the circulation of a coolant, in particular air. The tool is used in a device for bending and/or cooling a glass sheet, in particular individual, the tool coming into contact with the glass sheet while it is held by a bending tool or by a cooling frame after bending. A compression zone is created that is capable of being drilled to form an edge having compressive stresses.

Abstract: A cooling frame for a bent glass sheet, includes a support track for the sheet and a removable bearing piece that is able, in a bearing position and during cooling of the sheet by air blowing, to bear on the top face of the sheet and at the periphery thereof. The bent sheet cooled on the cooling frame maintains contact with the frame during the cooling operation and its shape complies better with that which is desired.

Abstract: A device and a process for manufacturing a bent individual glass sheet including a peripheral compression belt, wherein the process includes the heating thereof to its bending temperature in a furnace, the individual bending thereof, and the general cooling thereof. One zone of the sheet at least partially inside the peripheral compression belt, referred to as locally cooled zone, undergoes, after the heating of the sheet, a local cooling faster than the general cooling, when the sheet is at a temperature of at least 530° C. The cutting of the sheet on the locally cooled zone creates edges having edge compressive stresses.

Abstract: A conveying device for conveying sheets of glass advancing one behind the other includes a conveyor for conveying the sheets of glass in a longitudinal direction and a detection device for detecting the orientation of a sheet of glass, the detection device including two stops each to come into contact with the edge face of the sheet of glass, the detection device delivering an electrical signal relating to each contact with each stop, the electrical signals being coupled to an acquisition system making it possible to establish the length of time between contacts between the sheet of glass and each stop.

Abstract: A cooling frame for a bent glass sheet, includes a support track for the sheet and a removable bearing piece that is able, in a bearing position and during cooling of the sheet by air blowing, to bear on the top face of the sheet and at the periphery thereof. The bent sheet cooled on the cooling frame maintains contact with the frame during the cooling operation and its shape complies better with that which is desired.

Abstract: A method of bending at least one glass sheet including: allowing the glass to sag under gravity; then placing the central region of the one or more sheets in contact with a male former by advancing a female former supporting the sheet toward the male former, the male former being located above the female former with vertical movement of one with respect to the other being possible in a bending cell; then pressing the glass in its peripheral region between the male former and the female former; then holding the glass against the male former by partial vacuum, the pressing being continued; then discontinuing the pressing by separating the male former from the female former; and then cooling the glass outside the bending cell. The method makes it possible to produce bends with short radii of curvature in two perpendicular directions without leaving marks on the glass.