Burner utilizing an eddy plate for proper mixing of fuel and air

Claim 1

IN COMBINATION A FURNACE, A BURNER UNIT ATTACHED TO THE FURNACE, SAID BURNER UNIT COMPRISING: A FIRST PIPE TO WHICH MAIN FUEL IS SUPPLIED, A SECOND PIPE CONCENTRIC WITH AND SURROUNDING SAID FIRST PIPE, THROUGH WHICH AIR FLOWS, A THIRD PIPE CONCENTRIC WITH AND SURROUNDING SAID SECOND PIPE AND ADAPTED TO CONDUCT AIR FOR SUPPORTING COMBUSTION OF THE MAIN, AN EDDY PLATE SURROUNDING FIRST PIPE AND EXTENDING RADIALLY TO A POSITION CLOSELY ADJACENT TO THE INNER WALL OF SAID SECOND PIPE SO AS TO FORM A RESTRICTED ANNULAR PASSAGE THEREBETWEEN, A FOURTH PIPE EXTENDING THROUGH THE ANNULAR SPACE BETWEEN SAID FIRST AND SECOND PIPES HAVING AN OUTLET POSITIONED DOWNSTREAM OF AND ADJACENT TO SAID EDDY PLATE, THROUGH WHICH FUEL IS SUPPLIED, THE AIR FLOWING PAST THE EDDY PLATE SUPPORTING COMBUSTION OF THE FUEL SUPPLIED THROUGH THE FOURTH PIPE, AND IGNITION MEANS IN THE ANNULAR SPACE BETWEEN THE FIRST AND SECOND PIPES POSITIONED DOWNSTREAM OF AND ADJACENT TO SAID EDDY PLATE FOR IGNITING THE FUEL FLOWING THROUGH SAID FOURTH PIPE, WHEREBY THE FUEL FLOWING THROUGH THE FOURTH PIPE FORMS A PILOT FOR IGNITING THE MAIN FUEL FLOWING THROUGH THE FIRST PIPE.