Abstract: A method for automatically detecting and adjusting the position of a plurality of burners with respect to the edge of a continuous glass sheet is provided. The glass sheet is transported by rolls along the length of a thermal treatment lehr. Detecting and adjusting sensors for sensing the edge of the glass sheet are attached conjointly with the burners in order to automatically adjust the position of the burners with regards to the edge of the glass sheet, so, for each variation in the width of the glass sheet, the detecting and adjusting sensors are advanced or retracted over the edge of the glass sheet, in order to adjust the burners in accordance with a new position of the edge of said glass sheet.

Abstract: A system for detecting and automatically adjusting the position of a plurality of burners with respect to the edges of a continuous glass sheet is provided. The glass sheet is transported by rolls along the length of a thermal treatment lehr. Sensor elements for sensing the edge of the glass sheet are attached conjointly with the burners in order to adjust the position of the burners. A programmable controller is coupled to the sensor elements in order to adjust the position of the burners in accordance with the position of the sensor elements at the edge of the glass sheet.

Abstract: A system and method is disclosed to automatically lift the curtains of the exit hood of a machine for the production of float flat glass by the floating process. A light beam emitter is provided for a light beam which strikes the surface of the glass ribbon, being formed, and is reflected by that surface. A light beam receptor receives the light beam reflected by the surface of the glass ribbon and provides a signal representative of the absence or deviation of the reflected light beam should there be a break in the glass ribbon. A controller receives the signal representative of the absence or deviation of the reflected light beam, and provides operating signals to the actuators of the i) curtain lifting mechanism, ii) reheating system, iii) glass edge follower mechanism and iv) alarm of the glass ribbon forming machine.