.~.~ Crucible or furnace type (i.e., adapted to hold meltable material) {6}
421
.~.~.~ Melting pot
DEFINITION
Classification: 219/421
(under subclass 420) Subject matter including container means
comprising a vessel, usually constructed of a highly refractive material, peculiarly adapted for the heating of some material which constitutes a solid at room temperature and assumes a liquid state at some higher temperature. The patents to be found in this subclass for the most part specifically state in the claims that the device is for the purpose of melting some solid to a molten state; however where the claims do not so specifically state, but contain structure which would restrict the device to use as a melting pot and in which the ranges of temperatures disclosed or claimed are not such as to classify the patent elsewhere in some other art class the patent is classified here.
SEE OR SEARCH THIS CLASS, SUBCLASS:
415+, for deep well heaters.
429+, for vessel with stand with heater.
438+, for vessel with heater.
SEE OR SEARCH CLASS 65, Glass Manufacturing,
347, for glass melting pot or furnace with fining or delivery zone.
126, Stoves and Furnaces,
284, for glue pots and subclass 343.5 for melting furnaces.
