Automatic chain tightening mechanism for infinitely variable cone pulley gears

Claim 1

IN AN INFINITELY VARIABLE TRANSMISSION HAVING A HOUSING, INCLUDING AS MOVABLE ELEMENTS A PAIR OF TRANSMISSION SHAFT ELEMENTS ROTATABLY MOUNTED IN SAID HOUSING, TWO PAIRS OF CONICAL PULLEY DISK ELEMENTS WITHIN SAID HOUSING AND EACH PAIR MOUNTED ON ONE OF SAID SHAFTS, AND AT LEAST ONE FLEXIBLE ENDLESS POWER TRANSMITTING ELEMENT CONNECTING SAID TWO PAIRS OF DISK ELEMENTS AND ADAPTED TO TRAVEL BETWEEN THEM UNDER A CERTAIN TENSION, MEANS FOR ADJUSTING THE AXIAL DISTANCES BETWEEN THE DISK ELEMENTS OF BOTH PAIRS EQUALLY IN OPPOSITE DIRECTIONS TO EACH OTHER FOR VARYING THE TRANSMISSION RATIO OF SAID TRANSMISSION, MEANS FOR ADJUSTING THE DISTANCE BETWEEN THE DISK ELEMENTS OF BOTH PAIRS IN THE SAME DIRECTION FOR TIGHTENING SAID TRANSMITTING ELEMENT, SAID LAST ADJUSTING MEANS COMPRISING A TIGHTENING SPINDLE, THREADED MEANS ENGAGING WITH AND MOVABLE ALONG SAID SPINDLE WHEN SAID SPINDLE IS TURNED, ARMS CONNECTING SAID THREADED MEANS TO A LEAST ONE DISK ELEMENT OF EACH PAIR, MEANS FOR GAUGING THE PREVAILING TENSION OF SAID TRANSMITTING ELEMENT AND ADAPTED TO BE MOVED FROM ONE POSITION IN ACCORDANCE WITH THE ORIGINAL TENSION OF SAID TRANSMITTING ELEMENT TO OTHER POSITIONS IN ACCORDANCE WITH SAID PREVAILING TENSION, AND MEANS CONTROLLED BY SAID GAUGING MEANS AND ADAPTED TO BE DRIVEN BY ONE OF THE SAID MOVABLE ELEMENTS OF SAID TRANSMISSION FOR TURING SAID TIGHTENING SPINDLE WHEN SAID GAUGING MEANS INDICATES THAT SAID TRANSMITTING ELEMENT NEEDS TO BE RETIGHTENED.