Self-propelled swather

Claim 1

AN AGRICULTURAL VEHICLE, COMPRISING: A FORE-AND-AFT MAIN FRAME HAVING A TRANSVERSE FRONT END PORTION SPACED ABOVE THE GROUND AND A PAIR OF TRANSVERSELY SPACED APART AND ALINED WHEEL SUPPORT STRUCTURES RIGIDLY SECURED TO AND DEPENDING FROM SAID PORTION, EACH STRUCTURE INCLUDING A BOX-LIKE PART HAVING INNER AND OUTER, UPRIGHT CLOSELY TRANSVERSELY SPACED APART FORCE-AND-AFT SIDE WALLS AFFORDING A COMPARTMENT AND A GEAR BOX CARRIED WITHIN SAID COMPARTMENT, EACH GEAR BOX HAVING A TRANSVERSE WHEEL SHAFT PROJECTING EXTERIORLY OF ITS COMPARTMENT AND A FOREAND-AFT INPUT SHAFT WITHIN ITS COMPARTMENT, AND EACH INNER WALL HAVING A THROUGH APERTURE THEREIN LEADING TO THE RESPECTIVE INPUT SHAFT; A PAIR OF WHEELS CONNECTED RESPECTIVELY TO AND DRIVEN BY THE WHEEL SHAFTS; A POWER SOURCE ON THE FRAME INCLUDING A PAIR OF POWER SHAFTS LATERALLY INTERMEDIATE AND REARWARDLY OF THE WHEEL SUPPORT STRUCTURES; A PAIR OF DRIVE SHAFT MEANS CONNECTED RESPECTIVELY TO THE POWER SHAFTS AND ANGLED FORWARDLY AND OPPOSITELY OUTWARDLY AND EXTENDING RESPECTIVELY THROUGH SAID INNER SIDE WALL APERTURES AND CONNECTED RESPECTIVELY TO SAID INPUT SHAFTS.