Fuel conserver and humidifier for warm air furnaces

Claim 1

IN COMBINATION WITH A WARM AIR FURNACE AND THE FLUE PIPE THEREOF, A HELICAL TUBULAR COIL IN SAID FLUE PIPE, MEANS FOR PROVIDING A WATER SUPPLY IN SAID TUBULAR COIL INCLUDING AN OUTER ELONGATED VERTICALLY DISPOSED TUBE, AN INNER TUBE RECEIVED IN SAID OUTER TUBE, A FURTHER INNER TUBE POSITIONED WITHIN SAID INNER TUBE, MEANS FOR PROVIDING A WATER SUPPLY UNDER PRESSURE THROUGH SAID FURTHER INNER TUBE, SAID FURTHER INNER TUBE COMMUNICATING THROUGH SAID INNER TUBE AT ITS UPPER END TO THE SPACE BETWEEN SAID OUTER TUBE AND SAID INNER TUBE, MEANS COMMUNICATING FROM THE LOWER END OF SAID INNER TUBE AND THE LOWER END OF SAID TUBULAR COIL, SAID INNER TUBE HAVING AN INLET OPENTIONS OF THE SIDES DEFINING THE INTERMEIDATE CHAMBER SAID TUBULAR COIL, AND ALSO HAVING A FURTHER OUTLET OPENING, A SETTLING TANK POSITIONED AT THE LOWER END OF SAID INNER TUBE AND COMMUNICATING THEREWITH, A TAP VALVE FOR DRAWING OFF WATER BORNE PARTICLES ATTACHED TO SAID SETTLING TANK, A FURTHER TAP VALVE POSITIONED AT THE LOWER END OF SAID OUTER TUBE FOR DRAWING OFF FURTHER WATER BORNER PARTICLES SETTLING AT THE BOTTOM OF SAID OUTER TUBE, A STILL FURTHER TUBE POSITIONED WITHIN SAID OUTER TUBE HAVING AN OPEN UPPER END, A FLOAT UNIT ADJUSTABLY ATTACHED TO SAID OUTER TUBE, TUBULAR MEANS ATTACHED BETWEEN THE LOWER END OF SAID STILL FURTHER TUBE AND SAID FLOAT UNIT, A STEAM PASSAGE PIPE COMMUNICATING BETWEEN THE UPPER END OF SAID OUTER TUBE AND THE PLENUM CHAMBER OF SAID FURNACE.