Carburetor fuel system

Claim 1

IN A LIQUID FUEL FEED SYSTEM FOR AN INTERNAL COMBUSTION ENGINE HAVING AN INTAKE MANIFOLD, THE COMBINATION OF A CARBURETOR HAVING A BODY WITH A THROTTLE-CONTROLLED MIXTURE PASSAGE HAVINNG AN INLET AT ONE END ANND AN OUTLET AT THE OTHER END, THE OUTLET OF WHICH, DOWNSTREAM FROM THE THROTTLE, IS ADAPTED TO BE CONNECTED TO THE MANIFOLD, A RESERVOIR IN SAID BODY FOR HOLDING A BODY OF FUEL ADJACENT SAID MIXTURE PASSAGE, A MAIN FUEL SUPPLY PASSAGE LEADING FROM SAID RESERVOIR TO A MAIN FUEL JET IN THE MIXTURE PASSAGE, AN IDLE FUEL PASSAGE LEADING FROM SAID RESERVOIR TO A POINT ADJACENT SAID MIXTURE PASSAGE; MEAN IN SAID IDLE FUEL PASSAGE TO ADJUST THE FLOW OF FUEL THERETHROUGH, AN IDLE MIXUTE AIR PASSAGE SPACED FROM BUT EXTENDING ALONG SAID MIXTURE PASSAGE AND INTERSECTING SAID IDLEE FUEL PASSAGE, SAID AIR PASSAGE HAVING AN EFFECTIVE AREA THROUHOUT ITS LENGTH APPROXIMATELY FOUR TIMES THE EFFECTIVE AREA OF THE IDLE FUEL PASSAGE, MEANS IN SAID AIR PASSAGE TO ADJUST THE FLOW OF AIR THERETHROUGH, SAID AIR PASSAGE ORIGINATING ADJACENT THE INLET OF SAID MIXTURE PASSAGE AND TERMINATING ADJACENT THE OUTLET OF SAIDD MIXTURE PASSAGE WHEREIN SAID LAST MEANNS AND SAID MEANS IN SAID IDLE FUEL PASSAGE MAY BE ADJUSTED SUCH THAT THE RELATIVE EFFECTIVE CROSS-SECTIONAL AREA AVAILABLE FOR FLUID FLOW IN THE AIR PASSAGE AND THE IDLE FUEL PASSAGE CAN HAVE A RELATIONSHIP OF APPROXIMATELY FOUR TO ONE, AND ADJUSTMENT MEANS AT THE OUTLET OF THE IDLE MIXTURE AIR PASSAGE TO DIRECT A COMBINATION OF FUEL AND AIR REACHING SAID OUTLEET IN A PREDETERMINED DIRECTION, SAID DIRECTION BEING CONTROLLABLE RELATIVE TO AN INTAKE MANIFOLD OF AN ENGINE BY SAID ADJUSTMENT MEANS AT SAID OUTLET.