(under subclass 253) Apparatus comprising a removable enclosing receptacle or hood specially adapted for holding articles being heated, shielding them from the atmosphere, and equalizing the application of heat to the articles.
SEE OR SEARCH CLASS
266, Metallurgical Apparatus,
262+, for heat transferring boxes, shields or hoods which are solely disclosed for use in the heat treatment of metal objects, e.g., annealing boxes, carbonizing boxes will likewise be found therein.