Memory wheel control system for gill box

Claim 1

IN A GILL BOX HAVING A DRIVEN ELEMENT WHOSE SPEED IS VARIED TO CONTROL THE DRAFT OF THE SILVER BEING OPERATED UPON, A POSITIVE INFINITELY VARIABLE SPEED TRANSMISSION HAVING AN OUTPUT SHAFT AND A MOVABLE CONTROL MEMBER ADJUSTABLE TO CONTROL THE SPEED OF SAID OUTPUT SHAFT, MEANS CONNECTING SAID OUTPUT SHAFT TO DRIVE SAID ELEMENT, A REVERSIBLE POWER ACTUATOR HAVING AN OUTPUT MEMBER OPERATIVELY CONNECTED TO MOVE SAID CONTROL MEMBER UPON ENERGIZATION AND OPERATION OF THE ACTUATOR, AND CONTROL MEANS RESPONSIVE TO THE THICKNESS VARIATIONS OF SILVER ENTERING SAID GILL BOX FOR ENERGIZING SAID ACTUATOR TO VARIABLY POSITION SAID CONTROL MEMBER IN ACCORDANCE WITH THE THICKNESS VARIATIONS OF SAID SLIVER, SAID CONTROL MEANS COMPRISING SENSING MEANS FOR SENSING THE THICKNESS OF SAID SLIVER, A CONTROL ELEMENT FOR SAID ACTUATOR DISPLACED IN RESPONSE TO A SENSING BY SAID SENSING MEANS OF A VARIATION IN THICKNESS OF SAID SLIVER AND HAVING A NEUTRAL POSITION, POSITION RESPONSIVE MEANS RESPONSIVE TO THE POSITION OF SAID CONTROL ELEMENT AND EFFECTIVE WHEN THE CONTROL ELEMENT IS DISPOSED IN A POSITION DISPLACED FROM SAID NEUTRAL POSITION TO ENERGIZE AND OPERATE SAID ACTUATOR IN A DIRECTION DEPENDENT UPON THE DIRECTION OF DISPLACEMENT OF SAID POSITION OF SAID CONTROL ELEMENT FROM SAID NEUTRAL POSITION, AND FOLLOW-UP MEANS INDEPENDENT OF SAID SLIVER INTERCONNECTING THE OUTPUT MEMBER OF SAID ACTUATOR TO SAID CONTROL ELEMENT AND RESPONSIVE TO THE OPERATION OF SAID ACTUATOR FOR RETURNING SAID CONTROL ELEMENT INDEPENDENTLY OF SAID SLIVER TOWARD SAID NEUTRAL POSITION AS THE ACTUATOR OPERATES IN THE DIRECTION CORRESPONDING TO THE DISPLACEMENT OF THE POSITION OF THE CONTROL ELEMENT FROM ITS NEUTRAL POSITION.