Method and apparatus for drawtwisting yarn

Claim 1

A DRAWTWISTER PROVIDED WITH A SOURCE OF YARN SUPPLY COMPRISING IN COMBINATION: (A) A PLURALITY OF DRIVEN DRAW ROLLS; (B) A PLURALITY OF DRIVEN FEED AND COT ROLL ASSEMBLIES FOR ADVANCING YARN FROM THE SOURCE OF SUPPLY THEREOF TO SAID PLURALITY OF DRAW ROLLS; (C) A PLURALITY OF DRAW PINS INTERPOSED BETWEEN SAID PLURALITY OF DRIVEN DRAW ROLLS AND SAID PLURALITY OF DRIVEN FEED AND COT ROLL ASSEMBLIES; (D) SAID PLURALITY OF DRAW PINS NORMALLY ENGAGING THE YARN AND LOCALIZING THE DRAWPOINT THEREOF; (E) SAID PLURALITY OF DRIVEN FEED AND COT ROLL ASSEMBLIES AND SAID PLURALITY OF DRIVEN DRAW ROLLS BEING DRIVEN AT DIFFERENT PERIPHERAL RATES OF SPEED TO STRETCH THE YARN THEREBETWEEN; (F) A PLURALITY OF YARN TWIST ASSEMBLIES EACH HAVING A RECIPROCABLE RING OPERABLE IN SURROUNDMENT OF A BOBBIN MOUNTED ON A SPINDLE AND HAVING A TRAVELER MEMBER SLIDABLY MOUNTED ON SAID RECIPROCABLE RING FOR CARRYING THE YARN ORBITALLY ABOUT A CORRESPONDING SPINDLE; (G) DRIVE MEANS INCLUDING A MAIN SHAFT FOR OPERATIVELY DRIVING SAID DRAW ROLLS, SAID FEED AND COT ROLLS, AND SAID RECIPROCATING RINGS, AND INCLUDING A DRIVEN SHAFT AXIALLY ALIGNED IN SPACED RELATION WITH SAID MAIN SHAFT FOR OPERATIVELY DRIVING SAID SPINDLES; (H) A SPACED JACKSHAFT ARRANGED PARALLEL TO SAID MAIN SHAFT AND SAID DRIVEN SHAFT; (I) AN OVERRUNNING CLUTCH MOUNTED ON SAID DRIVEN SHAFT; (J) A PLURALITY OF BELT AND PULLEY MEANS INTERCONNECTING SAID MAIN SHAFT AND SAID OVERRUNNING CLUTCH TO SAID JACKSHAFT; AND (K) VARIABLE SPEED MEANS ADAPTED TO CONNECT AND DISCONNECT SAID MAIN AND SAID DRIVEN SHAFTS TO SELECTIVELY CONTROL THE RATIO OF THE SPEED OF SAID PLURALITY OF SPINDLES IN RELATION TO THE SPEED OF TRAVEL OF SAID TRAVELER MEMBERS THEREAROUND TO PREVENT FORMATION OF RIBBONS IN THE YARN NORMALLY BEING PACKAGED ON SAID BOBBINS.