Drive mechanism for a bicycle or the like

Claim 1

THE COMBINATION WITH A BICYCLE, OR THE LIKE, HAVING A SUPPORTING FRAME PROVIDED WITH A TRANSVERSE BEARING TUBE, A DRIVE SHAFT JOURNALLED IN THIS BEARING TUBE AND HAVING A DRIVE SPROCKET FIXED THERETO, A GROUND-ENGAGING WHEEL PROVIDED WITH A DRIVEN SPROCKET, AND A CHAIN TRAINED OVER THE DRIVE AND DRIVEN SPROCKETS SO THAT ROTATION OF THE DRIVE SPROCKETS WILL ACTUATE THE DRIVEN SPROCKET TO PROPEL THE BICYCLE, OR THE LIKE, OF A DRIVE MECHANISM COMPRISING: (A) AN ATTACHMENT SHAFT MOUNTED ON THE SUPPORTING FRAME TO EXTEND TRANSVERSELY THEREOF; (B) A PAIR OF DRIVE LEVERS SWINGABLY DISPOSED ON THE TRANSVERSE ATTACHMENT SHAFT, ONE ON THE RIGHT SIDE OF THE SUPPORTING FRAME AND THE OTHER ON THE LEFT SIDE THEREOF, AND EACH DRIVE LEVER BEING FORMED WITH A SEGMENTAL GEAR; (C) A PAIR OF FOOT RESTS, ONE BEING DISPOSED ON EACH SIDE OF THE SUPPORTING FRAME, AND EACH FOOT REST BEING SECURED TO AN ADJACENT DRIVE LEVER, WHEREBY EACH FOOT REST MAY BE DEPRESSED TO IMPART A CORRESPONDING SWINGING MOVEMENT TO ITS RESPECTIVE DRIVE LEVER; (D) MEANS INTERCONNECTING THE DRIVE LEVERS SO THAT WHEN ONE IS DEPRESSED THE OTHER WILL BE ELEVATED AND VICE VERSA;