Air-feed device for carburetors

Claim 1

AN AIR FEED DEVICE FOR ATTACHMENT TO THE AIR-INTAKE SUCTION TUBE OF A CARBURETOR OF AN INTERNAL COMBUSTION ENGINE, COMPRISING IN COMBINATION, AN UPPER UNIT CONNECTED TO A LOWER UNIT; SAID LOWER UNIT COMPRISING AN UPWARDLY FLARED, FRUSTOCONICAL ELEMENT HAVING UPPER AND LOWER ENDS PROVIDING AIR-INGRESS AND AIR-EGRESS PORTIONS, MEANS ON SAID LOWER AIR-EGRESS PORTION FOR REMOVABLY MOUNTING THE AIRFEED DEVICE ON THE AIR-INTAKE SUCTION TUBE, A FORAMINOUS SCREEN REMOVABLY SECURED TRANSVERSELY OVER THE AIR-INGRESS PORTION OF SAID FRUSTO-CONICAL ELEMENT; AN INVERTED CONICAL ELEMENT DEPENDING AXIALLY FROM THE CENTER OF SAID SCREEN AND EXTENDING SUBSTANTIALLY TO THE AIR-EGRESS PORTION, SAID UPPER UNIT COMPRISING A TOROIDAL-SHAPED ELEMENT HAVING A LOWER PORTION CUT-AWAY TO PROVIDE AN AIRINLET OPENING AND INCLUDING AN ARCUATE INNER SURFACE ORIGINATING FROM BELOW A PLANE PASSING THROUGH SAID SCREEN AND IN SPACED RELATION FROM THE OUTER PERIPHERY OF SAID SCREEN AND CONTINUING IN OVERLYING RELATION ABOVE SAID SCREEN, SAID ARCUATE SURFACE CONVERGING AXIALLY TOWARD SAID CONICAL ELEMENT AND SUBSTANTIALLY MERGING INTO THE OUTER SURFACE OF THE UPPER PORTION OF SAID CONICAL ELEMENT.