Abstract: A glass melting apparatus is provided with a melting tank, a refining tank and a working tank wherein the melting tank is operatively connected to the refining tank by a temperature control connecting pipe for intermittently supplying molten glass from the melting tank to the refining tank in dependence upon the level of molten glass within the refining tank. The melting tank may be comprised of a single tank which is considerably larger than the refining tank and the working tank or may be comprised of a plurality of individual, movable tanks each of which may be brought into operative association with the refining tank for melting raw material in the melting tank, the molten glass being supplied to the refining tank and continuously treated and supplied to the working tank.