Yarn winding machine with yarn severing and tension sensing means

Claim 1

IN A WINDING MACHINE ADAPTED TO ADVANCE A STRAND OF YARN FORM A SUPPLY SOURCE TO A TAKE-UP UNIT, SAID MACHINE INCLUDING SENSING MEANS FOR DETECTING AN INTERRUPTION IN SAID ADVANCING STRAND OF YARN, AND ACTUATING MEANS OPERABLE COOPERATIVELY WITH SAID SENSING MEANS TO PRESENT A FRESH STRAND OF YARN FOR WINDING UPON INTERRUPTION OF SAID ADVANCING STRAND, THE IMPROVEMENT THEREIN COMPRISING, A CLAMPING MEMBER ARRANGED TO GRIP SAID STRAND BETWEEN SAID SUPPLY SOURCE AND SAID TAKE-UP UNIT, SEVERING MEANS MOVABLE FROM A FIRST POSITION SPACED FROM SAID YARN STRAND TO A SECOND POSITION INTERPOSED IN THE PATH OF THE STRAND BETWEEN SAID SUPPLY SOURCE AND SAID CLAMPING MEMBER, MEANS CONNECTED WITH AND OPERABLE BY SAID ACTUATING MEANS FOR MOVING SAID SERVING MEANS FROM SAID FIRST POSITION TO SAID SECOND POSITION, A GUARD MEMBER NORMALLY ENCLOSING SAID SEVERING MEANS AND MOVABLE COOPERATIVELY THEREWITH, SAID GUARD MEMBER BEING ARRANGED TO CONTACT SAID STRAND OF YARN, AND RESILIENT MEANS YIELDABLY CONNECTING SAID SEVERING MEANS AND SAID GUARD MEMBER, SAID RESILENT MEANS BEING YIELDABLE TO PERMIT SEPARATION OF SAID SEVERING MEANS FROM SAID GUARD MEMBER WHEN THE TENSION IN SAID STRAND EXCEEDS A PREDETERMINED VALUE WHEREBY SAID SEVERING ELEMENT IS PRESENTED TO CUT SAID STRAND.