Heat treating glass sheets

Abstract From the Canadian patent

A method of and apparatus for bending and tempering thin glass sheets while supported horizontally and conveyed along a predetermined path, which involves moving the sheets after they have been heated to bending temperature over contoured rolls to preliminarily bend the glass then into posi-, tion above a bending mold where they are bent to the desired final curvature, thereafter supporting the bent sheets and moving them into the tempering section on rolls that fit their bent contour, initially chilling the bent sheets in the tempering section with blasts of air directed toward their surfaces and angled in the direction of sheet travel and subsequently with air directed thereagainst from …