Vapor generating and superheating apparatus

Claim 1

IN VAPOR GENERATING AND SUPERHEATING APPARATUS, THE COMBINATION OF: WALL STRUCTURE DEFINING A SHELL HAVING UPPER AND LOWER COMPARTMENT AND INCLUDING AN INTERNAL HORIZONTAL PARTITION BETWEEN SAID UPPER AND LOWER COMPARTMENTS, SAID LOWER COMPARTMENT INCLUDING A FURNACE CHAMBER, A PLURALITY OF SUPERHEATER HEADERS DISPOSED IN SAID UPPER COMPARTMENT, A PLURALITY OF ROWS OF UPRIGHT TUBES, EACH EXTENDING THROUGH SAID PARTITION INTO SAID UPPER COMPARTMENT AND CONNECTED TO AT LEAST ONE OF SAID HEADERS, SAID PARTITION INCLUDING: A PLURALITY OF HORIZONTALLY EXTENDING, FLUID-CONDUCTING TUBES ARRANGED CLOSELY SPACED IN A ROW AT THE BOTTOM OF SAID PARTITION, A PLURALITY OF HORIZONTALLY EXTENDING, ELONGATED METAL MEMBERS JOINED TO ONE ANOTHER ALONG ADJACENT LONGITUDINAL EDGE PORTIONS TO FORM A FLUIDTIGHT TOP SURFACE OF SAID PARTITION, WITH AT LEAST SOME OF THE ELONGATED MEMBERS HAVING A LONGITUDINAL SERIES OF HOLES SLIDABLY RECEIVING REPSECTIVE UPRIGHT TUBES TO HOLD SAID TUBES IN ROW AND AGAINST TRANSVERSE MOVEMENT, AND A BODY OF INSULATING REFRACTORY MATERIAL BETWEEN SAID HORIZONTAL TUBES AND THE TOP OF SAID PARTITION INCLUDING A LAYER OF CASTABLE REFRACTORY MATERIAL POURED IN PLACE SO AS TO REST UPON SAID HORIZONTAL TUBES AND BE SUPPORTED THEREBY.