Selective speed changer for variable speed drive

Claim 1

IN A VARIABLE SPEED V-BELT TRANSMISSION OF THE TYPE INCLUDING DRIVING AND DRIVEN PULLEYS AND AN INTERMEDIATE PULLEY ASSEMBLY CONNECTED BY BELTS WITH SAID DRIVING AND DRIVEN PULLEYS AND ADJUSTABLE TOWARD AND FROM THE SAME TO VARY THE SPEED OF THE DRIVEN PULLEY, THAT IMPROVEMENT WHICH INCLUDES ACTUATING MEANS FOR MOVING SAID PULLEY ASSEMBLY INTO THE DESIRED POSITION FOR OBTAINING THE DESIRED SPEED OF SAID DRIVEN PULLEY, A CONTROL MEMBER CONNECTED WITH AND MOVABLE WITH SAID PULLEY ASSEMBLY AND COMPRISING A ROD MOVABLE IN UNISON WITH SAID PULLEY ASSEMBLY AND HAVING AN ACTUATING PORTION THEREON, A PLURALITY OF SPEED SWITCHES ARRANGED ALONG THE PATH OF MOVEMENT OF SAID ROD AND EACH HAVING A PART FORMED TO BE MOVED BY SAID ACTUATING PORTION INTO A CIRCUITINTERRUPTING POSITION, MANUALLY ADJUSTABLE MEANS FOR CONNECTING ONE OF SAID SPEED SWITCHES CORRESPONDING TO THE SPEED DESIRED IN A CIRCUIT, SAID CIRCUIT ALSO CONTROLLING MOVEMENT OF SAID ACTUATING MEANS AND BEING INTERRUPTED WHEN SAID CONNECTED SPEED SWITCH IS MOVED INTO OPEN CIRCUIT POSITION BY SAID ACTUATING PORTION, TO STOP FURTHER MOVEMENT OF SAID ACTUATING MEANS, SAID ACTUATING MEANS BEING AN ELECTRIC MOTOR RECEIVING ELECTRIC CURRENT THROUGH A SPEED SWITCH, A SCREW SHAFT ROTATED BY SAID MOTOR AND CONNECTED WITH SAID PULLEY ASSEMBLY FOR RAISING AND LOWERING THE SAME AND WITH SAID CONTROL MEMBER, SAID MOTOR AND SCREW SHAFT BEING STOPPED WHEN THE SPEED SWITCH CONNECTED IN CIRCUIT WITH SAID MOTOR IS MOVED INTO OPEN CIRCUIT POSITION BY SAID ACTUATING PORTION OF SAID ROD.