Friction clutch operable on rotating shaft

Claim 1

A FRICTION CLUTCH FOR USE ON A MOTOR DRIVEN SHAFT, SAID CLUTCH COMPRISING: A HUB DETACHABLY FIXED ON SAID SHAFT, SAID HUB HAVING AN INTEGRAL, INNER FLANGE, AN INTEGRAL AXIALLY EXTENDING SLEEVE AND AN OUTER FLANGE AXIALLY SLIDABLE ON SAID SLEEVE; A DRIVEN ELEMENT, BEARING-MOUNTED ON SAID SLEEVE BETWEEN SAID INNER AND OUTER FLANGES FOR FREE ROTATION RELATIVE TO SAID HUB; ANNULAR FRICTION DISC MEANS ON AT LEAST ONE OF SAID FLANGES ADAPTED TO FRICTIONALLY GRIP SAID ELEMENT WHEN SAID OUTER FLANGE IS AXIALLY MOVED TOWARD SAID INNER FLANGE; ADJUSTABLE SUPPORT MEANS ON THE OPPOSITE SIDE OF SAID HUB FROM SAID MOTOR; A THRUST SCREW INCLUDING A TURN KNOB, THREADEDLY MOUNTED IN SAID SUPPORT MEANS, SAID SCREW HAVING A TIP CO-AXIAL WITH SAID SHAFT AT A SPACED DISTANCE THEREFROM AND BEING NORMALLY NON-ROTATING; A PRESSURE APPLYING COLLAR AXIALLY SLIDABLE ON, AND NORMALLY ROTATABLE WITH SAID SLEEVE, SAID COLLAR BEING POSITIONED BETWEEN SAID OUTER FLANGE AND SAID THRUST SCREW, AND BEARING MEANS CONNECTING THE NON-ROTATING TIP OF SAID THRUST SCREW AND SAID ROTATABLE COLLAR FOR TRANSMITTING AXIAL TRANSLATORY MOVEMENT OF SAID THRUST SCREW TO SAID COLLAR AND OUTER FLANGE DURING THE ROTATION OF SAID DRIVEN SHAFT TO CONTROL THE FRICTIONAL DRIVE OF SAID DRIVEN ELEMENT.