Combination gas and liquid fuel burner

Claim 1

A COMBINATION GAS AND LIQUID FUEL BURNER OF THE INDUCED DRAFT TYPE COMPRISING AN ELONGATED AND PLAINLY CYLINDRICAL BLAST TUBE FOR CONVEYING COMBUSTION AIR IN A LINEAR FLOW PATTERN TOWARDS A COMBUSTION END THEREOF, A CENTRALLY APERTURED TURBULATOR MOUNTED AT SAID COMBUSTION END OF THE BLAST TUBE WITHIN THE PATH OF SAID COMBUSTION AIR, SAID TURBULATOR BEING SUBSTANTIALLY DISC-LIKE IN SHAPE HAVING OUTER DIAMETER LESS THAN THE INSIDE DIAMETER OF SAID CYLINDRICAL BLAST TUBE AND BEING MOUNTED CONCENTRICALLY WITHIN SAID BLAST TUBE TO PROVIDE BY-PASS AIR SPACING BETWEEN THE OUTER PERIPHERY OF SAID TURBULATOR AND THE INTERIOR SURFACE OF SAID BLAST TUBE, SAID TURBULATOR FURTHER INCLUDING BLADE MEANS PROVIDING OPENINGS FOR TURBULATING COMBUSTION AIR PASSING THERETHROUGH, THE AREA OF SAID CENTRALLY APERTURED TURBULATOR RELATIVE TO THE TRANSVERSE AREA OF SAID CYLINDRICAL BLAST TUBE BEING SUCH THAT THE RATIO OF THE AMOUNT OF AIR BY-PASSING SAID AIR SPACING, TO THE AMOUNT OF AIR PASSING THROUGH ITS SAID BLADE MEANS OPENINGS IS ON THE ORDER OF 7.5:1, SAID BLADE MEANS HAVING AN AIR INLET SIDE FACING THE INTERIOR OF SAID BLAST TUBE, LIQUID FUEL FEEDING MEANS INCLUDING A NOZZLE FOR EMITTING LIQUID FUEL AT A LOCATION ADJACENT TO THE CENTRAL APERTURE OF SAID TURBULATOR AT SAID AIR INLET SIDE OF ITS SAID BLADE MEANS, AND GAS FUEL FEEDING MEANS INCLUDING GAS EMITTING ORIFICE MEANS DISPOSED WITHIN SAID BLAST TUBE ADJACENT TO SAID INLET SIDE OF THE TURBULATOR BLADE MEANS, SAID GAS EMITTING ORIFICE MEANS BEING ORIENTED TO DIRECT EMITTED GAS IN DIRECTION TRANSVERSELY OF SAID DIRECTION OF FLOW OF COMBUSTION AIR THROUGH SAID BLAST TUBE.