Variable speed pulley drive

Claim 1

AN ADJUSTABLE PITCH SHEAVE FOR A V-BELT, COMPRISING A HUB HAVING A BORE THERETHROUGH WITH ONE END TAPERED INWARDLY, A FLANGE JOINED INTEGRALLY WITH SAID HUB AT THE END WITH THE TAPERED PORTION OF THE BORE AND HAVING A CONICAL BELT ENGAGING SURFACE, SAID HUB HAVING A LONGITUDINAL GROOVE ON ITS EXTERNAL SURFACE, A SLEEVE SLIDABLY MOUNTED ON SAID HUB AND HAVING A LONGITUDINAL GROOVE ON ITS INNER SURFACE, A FLANGE JOINED INTEGRALLY WITH THE END OF SAID SLEEVE ADJACENT SAID FIRST MENTIONED FLANGE AND HAVING A CONICAL BELT ENGAGING SURFACE FACING THE CORRESPONDING SURFACE ON SAID FIRST MENTIONED FLANGE, AN ANTI-FRICTION BEARING INTERPOSED BETWEEN SAID HUB AND SLEEVE, A KEY IN SAID GROOVES, A SHAFT ROTATABLY MOUNTED IN SAID HUB BORE AND HAVING A THREADED PORTION EXTENDING FROM SAID BORE IN AXIAL ALIGNMENT WITH SAID HUB, A BODY HAVING A MEMBER WITH A THREADED BORE FOR RECEIVING THE THREADED PORTION OF SAID SHAFT AND HAVING AN ANNULAR PORTION OVERLAPPING ONE END OF SAID SLEEVE, A BEARING MEANS CONNECTING SAID SLEEVE AND SAID ANNULAR MEMBER, AN ARM ON SAID BODY FOR PREVENTING ROTATION THEREOF, AN ADJUSTMENT CAP HAVING AN ANNULAR PORTION EXTENDING OVER A PORTION OF SAID BODY AND BEING CONNECTED TO SAID SHAFT FOR ROTATING SAID SHAFT RELATIVE TO SAID BODY TO MOVE SAID BODY ALONG SAID THREADED PORTION OF THE SHAFT AND THEREBY TO SHIFT SAID SLEEVE AND SAID SECOND FLANGE TOWARD AND AWAY FROM SAID FIRST FLANGE, SAID ADJUSTMENT CAP HAVING A DETENT FOR RETAINING A SETTING AFTER AN ADJUSTMENT IN THE PITCH OF THE SHEAVE HAS BEEN MADE, AND A MEANS MOUNTED ON SAID HUB ADJACENT SAID FIRST MENTIONED FLANGE INCLUDING A SPLIT TAPERED BUSHING FOR SECURING SAID SHEAVE TO A SHAFT.