Agricultural machine for carrying workers

Claim 1

AN AGRICULTURAL MACHINE COMPRISING A FRAME, A PLATFORM SUPPORTED BY SAID FRAME, A PAIR OF TRACTION WHEELS MOUNTED ADJACENT THE REAR END OF SAID FRAME, MOTOR MEANS SUPPORTED BY SAID PLATFORM, DRIVE MEANS FOR TRANSMITTING POWER TO SAID TRACTION WHEELS FROM SAID MOTOR MEANS, A STEERABLE WHEEL MOUNTED ADJACENT THE FORWARD END OF SAID FRAME FOR PIVOTAL MOVEMENT ABOUT A SUBSTANTIALLY VERTICAL AXIS, A FIRST CONTROL SYSTEM MOUNTED ADJACENT THE REAR OF SAID FRAME AND THEREUPON IN AN UPPER POSITION, SAID FIRST CONTROL SYSTEM BEING OPERABLY CONNECTED TO SAID STEERABLE WHEEL TO CONTROL THE DIRECTION OF MOVEMENT OF SAID MACHINE, A SECOND CONTROL SYSTEM MOUNTED FORWARD OF SAID FIRST CONTROL SYSTEM AND IN A LOWER POSITION RELATIVE THERETO TO CONTROL THE DIRECTION OF MOVEMENT OF SAID VEHICLE, AND FIST AND SECOND CONTROL SYSTEMS BEING CONNECTED ONE TO THE OTHERM SAID FRAME COMPRISING SPACED APART FORWARD AND REAR MEMBERS, A PAIR OF SUBSTANTIALLY VERTICALLY EXTENDING MEMBERS ADAPTED TO SUPPORT SAID REAR MEMBER A PREDETERMINED DISTANCE FROM THE GROUND, WHEEL MOUNTING ELEMENTS SECURED ADJACENT THE BOTTOM OF SAID VERTICAL MEMBERS, SAID TRACTION WHEELS BEING MOUNTED ON SAID ELEMENTS, SAID VERTICALLY EXTENDING MEMBERS EACH BEING ADAPTED TO BE MOVED LATERALLY WITH RESPECT TO A MEDIAL LINE OF THE MACHINE TO PROVIDE A TRACK OF VARIABLE WIDTH, SAID DRIVE MEANS INCLUDING AN AXLE AND POWER TRANSFER MEANS CONNECTING SAID AXLE AND SAID TRACTION WHEELS, SAID POWER TRANSFER MEANS INCLUDING A PAIR OF DRIVING RODS, ONE EXTENDING LATERALLY AT EACH END OF SAID AXLE AND A DRIVING SPROCJET ADJUSTABLY SECURED ON EACH OF SAID RODS, A DRIVEN SPROCKET CONNECTED TO EACH WHEEL AND CHAIN MEANS CONNECTING SAID DRIVING AND DRIVEN SPROCKETS.