Abstract: This invention relates to a furnace for the melting of glass. The furnace comprises means defining an opening through which solid state batch material may be delivered into the furnace chamber and to enable the rate of withdrawal of glass to be varied without substantial alteration in the temperature of the body of molten glass, which is exposed for the reception of batch material. Thus the area of contact between the body of molten glass and the batch may be varied, to vary the rate at which the batch material is melted.
Type:
Grant
Filed:
April 8, 1976
Date of Patent:
July 19, 1977
Assignee:
Elemelt Limited
Inventors:
Charles Chamberlain Holmes, Wallace Skinner, George Roland Mattocks
Abstract: A furnace of the kind in which molten glass is heated by electrode means defining separate respective heating zones situated in horizontally spaced regions of the furnace chamber, glass being withdrawn along a withdrawal flow path extending between the heating zones to the outlet. Additional heating means is provided to heat the glass at a locality above the withdrawal flow path in the vicinity of the outlet, producing an upward convective pressure to counteract downward entrainment effects caused by flow of glass to the outlet.
Type:
Grant
Filed:
September 5, 1975
Date of Patent:
December 28, 1976
Assignee:
Elemelt Limited
Inventors:
Philip Anthony Maunsell Gell, Douglas Graeme Hann