Draft control mechanism

Claim 1

DRAFT CONTROL MECHANISM FOR TRACTORS HAVING IMPLEMENT CONNECTING MEANS WHICH INCLUDES UPPER AND LOWER TENSION LINKS FOR CONNECTION TO THE IMPLEMENT WITH THE TOP TENSION LINK BEING CONNECTED TO A SPRING-LOADED LEVER, AND LIFT ARMS FOR RAISING AND LOWERING THE IMPLEMENT OPERATED BY MEANS INCLUDING A CONTROL VALVE LEVER, THE DRAFT CONTROL COMPRISING, A LEVER ARM, MEANS PIVOTALLY CONNECTED AT ONE END OF THE LEVER ARM AND TO THE SPRINGLOADED LEVER TO ROCK THE LEVER ARM UPON MOVEMENT OF THE SPRING-LOADED LEVER, MEANS PIVOTALLY CONNECTED TO THE OPPOSITE END OF THE LEVER ARM AND TO THE LIFT ARMS TO ROCK THE LEVER ARM ABOUT THE FIRST-MENTIONED PIVOTAL CONNECTION WHEN THE LIFT ARMS ARE MOVED, AND MEANS CONNECTED TO THE LEVER ARM AT AN INTERMEDIATE POINT AND TO THE CONTROL VALVE LEVER, WHEREBY THE LEVER ARM MAY ROCK ABOUT THE PIVOTAL CONNECTIONS AT ITS ENDS AS FULCRUMS TO MOVE THE CONTROL VALVE LEVER UPON MOVEMENT OF THE SPRING-LOADED LEVER AND UPON MOVEMENT OF THE LIFT ARMS, THE MEANS INTERCONNECTING THE SAID ONE END OF THE LEVER ARM AND THE SPRING-LOADED LEVER INCLUDING, A SHAFT, MEANS MOUNTING THE SHAFT FOR BODILY SLIDING MOVEMENT TRANSVERSELY OF THE SHAFT AXIS AND IN THE DIRECTION OF ROCKING MOVEMENT OF THE SPRING-LOADED LEVER, THE SHIFT CARRYING AN ARM FIXED THERETO AND PROJECTING RADIALLY THEREFROM, A LINK CONNECTED TO THE END OF THE PROJECTING ARM AND SAID ONE END OF THE LEVER ARM, AND A ROD INTERCONNECTING THE SHAFT AND THE SPRING-LOADED LEVER TO MOVE THE SHAFT TRANSVERSELY OF ITS AXIS UPON MOVEMENT OF THE SPRINGLOADED LEVER, THE SHAFT HAVING AN OPERATING LEVER FIXED THERETO, THE SHAFT BEING ROTATABLY CONNECTED TO THE ROD AND MEANS TO RELEASABLY HOLD THE SHAFT AGAINST ROTATION RELATIVE TO THE ROD.