APPARATUS FOR GLASS SHEET BENDING Russian patent published in 1997 - IPC

FIELD: glass making. SUBSTANCE: apparatus, having vertical heating and annealing channels and bending channel between them, is supplemented by, disposed in vertical channels, convective ports and shutter between them to adjust open flow area of ports. Convective ports may be positioned above lower cut of vertical channels in furnace. EFFECT: improved bending quality, reduced power consumption, and increased productivity due to increased rate of glass annealing after glass bending. 2 cl, 1 dwg