Front wheel drive for bicycles

Claim 1

A BINARY DEVICE BICYCLE COMPRISING, A FRAME, A REAR WHEEL, A FOOT-POWERED DRIVE MEANS FOR SAID REAR WHEEL, A FRONT WHEEL, A FORK MEMBER FOR SAID FRONT WHEEL ROTATABLY MOUNTED ON SAID FRAME, SAID FORK MEMBER PROVIDED WITH A HOLLOW UPWARDLY EXTENDING TUBULAR SHAFT, A HAND-DRIVEN FRONT WHEEL DRIVEN MEANS COMPRISING, A COASTER BRAKE AXLE ASSEMBLY OPERATIVELY MOUNTED ON SAID FRONT WHEEL, A SPROCKET FOR SAIDCOASER BRAKE ASSEMBLY, A STEM MEANS DISPOSED ON SAID TUBULAR SHAFT OF SAID FORK MEMBER, SAID STEM MEANS COMPRISING AN ELONGATED TUBULAR PORTION HAVING AN UPPER END AND A LOWER END, AN EXPANSION MEANS ON SAID LOWER END ADAPTED TO BE DISPOSED IN SAID HOLLOW TUBULAR SHAFT OF SAID FORK MEANS SECURE SAME IN ASSEMBLED RELATION, AN INTERGRAL OFFFSETTING PORTION OF SAID UPPER END AND AN ANNULAR CLAMP MEANS ON SAID OFFSETTING PORTION, AN IDLER MEANS MOUNTED ON SAID STEM MEANS COMPRISING, AN IDLER SPROCKET, A SHAFT, A SHAFT SUPPORT MEANS FOR SAID LAST-MENTIONED SHAFT, AND A CLAMPING MEANS ON SAID SHAFT SUPPORT MEANS ADAPTED TO ENCIRCLE SAID STEM MEANS, SAID IDLER SPROCKET MOUNTED ON SAID LASTMENTIONED SHAFT, A CRANK MEANS COMPRISING, A SHAFT PORTION, TWO OPPOSED LEG PORTIONS EACH INTEGRALLY JOINED AT ONE END TO AN END OF SAID SHAFT PORTION IN GENERALLY TRANSVERSE RELATIONSHIP THEREWITH, SAID SHAFT PORTION AND SAID LEG PORTIONS FORMING A GENERALLY U-SHAPED CONFIGURATION, AND HANDLE ELEMENTS ROTATABLY MOUNTED ON THE FREE ENDS OF THE LEG PORTIONS, A RELATIVELY LARGE SPOCKET FIXEDLY MOUNTED ON SAID CRANK MEANS ADJACENT ONE OF SAID LEG PORTIONS, AN ADJUSTABLE MOUNTING MEANS FOR SAID CRANK MEANS COMPRISING, A HORIZONTALLY EXTENDING BEARING MEANS TO ROTATABLY SUPPORT SAID CRANK MEANS, A GENERALLY UPRIGHT ELONGATED ROD PORTION HAVING UPPER AND LOWER ENDS INTEGRALLY JOINED AT ITS UPPER END TO SAID BEARING MEANS FOR SAID CRANK MEANS, AN ENLARGED PORTION ON SAID LOWER END OF SAID UPRIGHT ELONGATED ROD PORTION, FLAT PARALLEL