Variable speed drive mechanism

Claim 1

IN A VARIABLE SPEED DRIVE MECHANISM INCLUDING AN ENDLESS V-BELT CENTERED ON A PREDETERMINED PLANE, THE COMBINATION OF, A SHAFT MOUNTED TO ROTATE ABOUT AN AXIS NORMAL TO SAID PLANE, FIRST AND SECOND CONE DISCS HAVING CENTER BORES COAXIAL WITH AND TELESCOPED ONTO SAID SHAFT, SAID DISCS BEING DISPOSED ON OPPOSITE SIDES OF SAID PLANE AND COOPERATING TO FORM A VARIABLE SPEED PULLEY HAVING A V-GROOVE FOR RECEIVING SAID BELT AND DRIVING CONNECTING THE PULLEY TO THE BELT, MEANS FOR SECURING SAID DISCS SELECTIVELY OPERABLE TO VARY THE AXIAL SPACING OF THE DISCS RELATIVE TO EACH OTHER THEREBY TO VARY THE WIDTH OF SAID GROOVE AND THE PITCH DIAMETER OF SAID PULLEY, AND MEANS KEYING SAID DISCS TO SAID SHAFT FOR CONJOINT ROTATION AND FOR FREE AXIAL FLOATING OF THE ENTIRE PULLEY BACK AND FORTH ALONG THE SHAFT IN RESPONSE TO THE WEDGING FORCE OF SAID BELT ON SAID DISCS THEREBY TO MAINTAIN THE CENTERING OF SAID GROOVE ON SAID PLANE AS THE WIDTH OF THE GROOVE IS VARIED.