Method and Apparatus for Producing Samples of High Melting Point Glass

JSGT 1943 V27 T032-T037

A new method and apparatus for making high melting point glasses without using a crucible or furnace is described. It consists in feeding a rod of sintered batch on to a rotating mandrel and heating the rod of batch at one point by a flame until it begins to flow. By gradual upward movement of the heated area a stalagmite of glass grows on the mandrel.

M. Pirani