Knock-off motion for thread processing machines

Claim 1

IN A TENSION ACTUATED DEVICE FOR RESPONDING TO TENSION IN THE THREAD BEING UNWOUND FROM A BOBBIN, SAID DEVICE HAVING A FEELER PIN AROUND WHICH THREAD IS ADAPTED TO BE PASSED, A ROTATABLE SHAFT ON WHICH SAID FEELER PIN IS MOUNTED, A CUTTING MEANS COOPERATING WITH SAID FEELER PIN AGAINST WHICH THE THREAD IS DRAWN AND CUT WHEN THE TENSION GETS TOO GREAT, AND A CONTACT ADAPTED TO BE CONTACTED TO CLOSE A CIRCUIT WHEN THE TENSION IN SAID THREAD IS RELEASED SUDDENLY, THAT IMPROVEMENT COMPRISING AN ABUTMENT PIN ON SAID SHAFT, A SLEEVE ROTATABLY MOUNTED AROUND SAID SHAFT AND HAVING A SECTOR-SHAPED OPENING THEREIN IN WHICH SAID ABUTMENT PIN IS FREE TO MOVE, A SWITCH MEMBER PROJECTING FROM SAID SLEEVE AND ADAPTED TO CONTACT THE CONTACT WHEN SAID SLEEVE IS ROTATED, AND SPRING MEANS CONNECTED TO SAID SLEEVE URGING SAID SLEEVE TO ROTATE SAID SWITCH MEMBER AGAINST THE CONTACT IN THE OPPOSITE DIRECTION FORM THAT IN WHICH SAID SHAFT WILL BE ROTATED BY INCREASING THREAD TENSION ACTING ON THE FEELER PIN, WHEREBY WHEN THE TENSION THREAD IS CUT, SAID SPRING MEANS WILL ROTATE SAID SLEEVE AND THE EDGE OF THE SECTORSHAPED OPENING WILL ENGAGE SAID ABUTMENT PIN AND CARRY SAID SHAFT AND FEELER PIN ALONG IN THE ROTATION OF SAID SLEEVE UNTIL SAID SWITCH MEMBER ABUTS THE CONTACT, AFTER WHICH SAID FEELER PIN IS FREE TO CONTINUE ITS ROTATIONAL MOVEMENT AS SAID ABUTMENT PIN ROTATES IN THE SECTORSHAPED OPENING OF SAID SLEEVE.