DEVICE FOR HEATING OF MELTED GLASS IN ELECTRIC FURNACE

摘要

Molten glass is uniformly heated between a plurality of pairs of electrodes which receive elect. current from a current source which includes a like pularity of transformers and a source of elec. power, the primary winding of the transformers being connected in series to the power source and each secondary transformer winding connected to an assocd. pair of electrodes. The transformers feed and control the elect. current to equalize the current regardless of elec. resistance variations in the material due to rising temp.