Production of composite stretch yarns

Claim 1

IN AN APPARATUS COMBINATION FOR COVERING AN ELASTIC CORE YARN BY DRAFTING A ROVING OF NON-ELASTIC TEXTILE FIBERS, AND TWISTING SAME ABOUT SAID CORE YARN WHEREIN IS PROVIDED A PLURALITY OF PAIR OF DRAFTING ROLLS, INCLUDING A FRONT PAIR OF ROLLS AND A BACK PAIR OF ROLLS BETWEEN THE NIPS OF WHICH THE ROVING IS DRAFTED AND LATERALLY TRAVERSED, MEANS FOR ROTATING SAID DRAFTING ROLLS, THE FRONT PAIR OF ROLLS AT A GREATER PERIPHERAL SPEED THAN THE BACK PAIR OF ROLLS TO EFFECT SAID DRAFTING OF THE ROVING, MEANS FOR SUPPLYING A TENSIONED ELASTIC CORE YARN UPON THE ROVING AND BETWEEN THE NIPS OF THE FRONT PAIR OF ROLLS, THE IMPROVEMENT COMPRISING, A BIFURCATED YARN GUIDE MEMBER HAVING A CONCAVE FACE FOR MATING WITH THE FRONT PAIR OF DRAFTING ROLLS, THE TWO BRANCHES OF SAID BIFURCATED MEMBER PROVIDING A CONTIGUOUS UPPER NOTCH AND LOWER NOTCH WHICH OPENS INTO THE NIPS OF SAID FRONT PAIR OF ROLLS, THE UPPER NOTCH FOR HOLDING THE TENSIONED ELASTIC CORE YARN AND THE LOWER NOTCH FOR HOLDING THE ROVING, ONE IN CLOSED PROXIMITY TO THE OTHER, SAID LOWER NOTCH HAVING GREATER WIDTH THAN THAT OF THE UPPER NOTCH AND WHICH NOTCHES MAINTAIN THE RELATIVE POSITIONING OF THE CORE YARN AND ROVING ONE IN REGARD TO THE OTHER WHILE THESE ARE LATERALLY TRAVERSED UPON THE FRONT PAIR OF ROLLERS AND CORE SPUN TO FORM A COMPOSITE YARN.