Fuel mixing device

Claim 1

A FUEL MIXING DEVICE FOR INTERNAL COMBUSTION ENGINES ADAPTED TO BE INSTALLED IN A FUEL CONDUIT BETWEEN THE CARBURETOR AND AN INTAKE PORT OF THE ENGINE BLOCK THEREOF, SAID DEVICE COMPRISING A SUBSTANTIALLY CYLINDRICAL HOLLOW BODY COMPOSED OF A PAIR OF ABUTTING HIGHLY HEAT CONDUCTIVE SHEET METAL MEMBERS, SAID BODY HAVING AN EXTERNAL DIAMETER CORRESPONDING TO THE INTERNAL DIAMETER OF SAID CONDUIT, SAID MEMBERS HAVING STRUCK FROM OPPOSITE SIDES THEREOF COACTING SLOTS AND FINGERS INTERLOCKED WITH EACH OTHER TO HOLD SAID MEMBERS TOGETHER, SAID MEMBERS LIKEWISE HAVING STRUCK FROM ONE END THEREOF A SERIES OF BLADES EACH OF WHICH IS UNIFORMLY CURVED TOWARD THE LONGITUDINAL AXIS OF SAID BODY TO SUBSTANTIALLY SEMICIRCULAR FORM WITH INTERMIDIATE PORTIONS THEREOF RECURVING OUTWARDLY ALONG SAID AXIS, THE PLANES OF SAID SEMI-CIRCLES INTERSECTING EACH OTHER SUBSTANTIALLY AT A COMMON POINT ON SAID LONGITUDINAL AXIS AND INTERSECTING THE TRANSVERSE PLANE OF SAID BODY AT AN OBLIQUE ANGLE, SAID BLADES BEING CLOSELY SPACED FROM EACH OTHER AND OVERLAPPING IN PART SUBSTANTIALLY THROUGHOUT THEIR LENGTHS, THE TIPS OF SAID BLADES BEING SPACED FROM SAID AXIS AND LYING IN A COMMON TRANSVERSE PLANE LOCATEAD INWARDLY OF THE RECURVING PORTIONS OF SAID BLADES, AND SAID MEMBERS HAVING STRUCK FROM THE OPPOSITE END THEREOF A SECOND SERIES OF BLADES, THE BLADES OF SAID SECOND SERIES BEING ELONGATED AND SUBSTANTIALLY RECTANGULAR AND DEFLECTED INWARDLY SO AT TO CONVERGE AT A SLIGHT ANGLE UNIFORMLY AND GENERALLY CONICALLY UPON AND WITH THEIR TIPS SPACED FROM SAID LONGITUDINAL AXIS, ALL OF THE BLADES OF SAID SECOND SERIES BEING UNIFORMLY TWISTED FROM ONE END TO THE OTHER TO A TOTAL TWIST OF APPROXIMATELY 90* IN THE SAME DIRECTION TO WHIRL THE FUEL STREAM IN A DIRECTION OPPOSITE FROM THE DIRECTION OF WHIRL IMPARTED BY THE BLADES OF SAID FIRST-NAMED SERIES, SAID MEMBER FURTHER HAVING MOUNTING PROJECTIONS ARRANGED TO ENGAGE AND BE HELD BY ADJACENT PORTIONS OF SAID CONDUIT FOR MOUNTING SAID DEVICE IN PLACE THEREIN.