Furnace combustion chamber

Claim 1

IN A FURNACE HAVING WALL DEFINING MEANS PROVIDING AN ELONGATED COMBUSTION CHAMBER INCLUDING A BURNER AT ONE END WHICH IS ADAPTED TO PRODUCE A FLAME BY IGNITING A FLUID FUEL BEING DISCHARGED UNDER PRESSURE THROUGH A FUEL DISCHARGE NOZZLE, MEANS FOR INTRODUCING AIR INTO THE COMBUSTION CHAMBER AT POSITIONS INWARDLY OF THE BURNER AND IN A DIRECTION GENERALLY TOWARD THE AXIS OF THE FLAME COMPRISING AN ELONGATED MAIN CONDUIT EXTENDING WITHIN SAID CHAMBER FROM A POSITION ADJACENT THE BURNER TO A POSITION ADJACENT THE OPPOSITE END OF THE CHAMBER, A PLURALITY OF GENERALLY ANNULAR TUBULAR CONDUITS DISPOSED WITHIN THE CHAMBER IN GENERALLY TRANSVERSE RELATION TO THE LONGITUDINALLY AXIS OF THE CHAMBER AND CONNECTED WITH SAID MAIN CONDUIT AND SPACED APART THEREALONG AT POSITION EXTENDING SUBSTANTIALLY THE LENGTH OF THE CHAMBER, EACH OF SAID ANNULAR CONDUITS INCLUDING A SERIES OF JET OPENINGS WHICH ARE DIRECTED ONLY INWARDLY OF THE COMBUSTION CHAMBER, AND MEANS FOR SUPPLYING A SELECTED VOLUME OF AIR PER MINUTE UNDER PRESSURE THROUGH SAID MAIN CONDUIT TO SAID ANNULAR CONDUITS FOR EJECTING AIR THROUGH SAID JET OPENINGS TOWARD THE AXIS OF SAID CHAMBER TO THEREBY PROVIDE AIR AROUND THE ENTIRE PERIPHERY AND ESSENTIALLY ALONG THE ENTIRE LENGTH OF THE FLAME PRODUCED BY THE BURNER, WHEREBY THE COMBUSTIBLES ARE CONFINED WITHIN THE FLAME AND AIR IS PROVIDED FOR THE FLAME AS NEEDED ALONG ITS LENGTH.