METHOD FOR INDIRECT HEATING GLASS-CARRYING CHANNELS OR PASSAGES FEEDERS AND FEEDER HEADS AND AN APPARATUS FOR CARRYING OUT SUCH METHOD

摘要

1486090 Heating glass carrying containers SORG ZUG AG 23 Dec 1975 [27 Dec 1974] 52726/75 Heading C1M [Also in Division H5] A furnace, passage, feeder and/or feeder head, containing glass, made of a refractory material having, at high temperatures, a resistivity higher than that of soda-lime glass, is heated by means of an electric current flowing through the refractory material. The heating current is preferably supplied from a plurality of circuits each of which can be broken (e.g. by an overload relay or a fuse), when a given power consumption is exceeded.