Control of yarn in circular knitting machines

Claim 1

IN A CIRCULAR KNITTING MACHINE, THE COMBINATION COMPRISING A NEEDLE CYLINDER EQUIPPED WITH NEEDLES FORMING A NEEDLE CIRCLE, MEANS FOR FEEDING YARN FOR KNITTING PART WAY ONLY AROUND THE NEEDLE CIRCLE LEAVING A FLOAT OF YARN EXTENDING FROM THE TERMINATION OF SUCH KNITTING TO THE POINT OF RECOMMENCEMENT OF KNITTING, MEANS CREATING AN UPRISING LOCALIZED AIR STREAM TO RAISE THE FLOAT OF YARN ABOVE THE NEEDLES INCLUDING A NOZZLE HAVING AN ELONGATED MOUTH EXTENDING ABOVE AND ACROSS THE NEEDLE CIRCLE AND PARTLY ROUND IT AT A POSITION IN ADVANCE OF A SECONDARY STATION, CAM MEANS ASSOCIATED WITH THE SECONDARY STATION FOR RAISING THE NEEDLES ON WHICH KNITTING HAS OCCURRED PART WAY ROUND THE NEEDLE CIRCLE TO CAUSE SUCH NEEDLES TO RECEIVE YARN DELIVERED FROM THE MOUTH OF THE NOZZLE AND FOR LOWERING THE NEEDLES AFTER RECEIVING SUCH YARN, A SOURCE OF SUCTION, AND MEANS CONNECTING SUCH SOURCE TO SAID NOZZLE TO DRAW SAID YARN FLOAT INTO THE MOUTH OF THE NOZZLE.