SPEED CHANGE DEVICE FOR A TRACTOR, FACILITATING FORWARD FORWARD, BUT FORBIDDEN REVERSE ON HIGHEST SPEED

摘要

P ON A TRACTOR WHICH INCLUDES A MAIN SPEED CHANGE 15 TO FOUR SPEEDS, AN AUXILIARY SPEED CHANGE AT TWO SPEEDS AND A CHANGE FORWARD FORWARD 16, A LIMITER 24 ACTS WHEN THE CHANGE OF AUXILIARY SPEED IS IN SPEED . ITS ACTION CONSISTS OF PROHIBITING, BY PIVOTING AROUND AXIS 25, THE SIMULTANEITY OF THE FOURTH SPEED V AND THE REVERSE MARKET R. /P