WERKWIJZE VOOR HET VERVAARDIGEN VAN VOORGESPANNEN GLAS DOOR AFSCHRIKKEN IN EEN KOELBAD EN ALDUS AFGESCHRIKTE GLASLICHAMEN.

摘要

Glass is toughened by quenching the hot glass in a bath which consists essentially of a major proportion of a carrying liquid which is inert relative to the glass and has a boiling point below the temperature of the hot glass which is to be quenched and of a minor proportion of a liquid having a boiling point at least 100 DEG C. below the boiling point of the above mentioned carrying liquid. Thereby the speed of quenching the glass is greatly increased.