1. IN A MULTIPLE SECTION FULL-FASHIONED KNITTING MACHINE, EACH SECTION INCLUDING A NEEDLE PRESSER BAR, A ROW OF SPRING BEARD NEEDLES, SAID NEEDLES BEING MOVABLE ADJACENT ONE SIDE OF SAID NEEDLE PRESSER BAR TO AT TIMES IMPART A PRESSING MOTION TO ALL THE NEEDLES IN UNISON DURING EACH KNITTING CYCLE AND AT OTHER TIMES TO PREVENT PRESSING OF THE NEEDLES, AND MEANS FOR FEEDING YARN TO THE NEEDLES TO FORM A SELVEDGED WIDTH OF FABRIC; THE COMBINATION THEREWITH OF MEANS FOR FORMING A POCKET IN A CENTRAL PORTION OF THE FABRIC COMPRISING (A) THREE NEEDLE PRESSING BLADES OPERABLE UPON A CENTRAL GROUP OF ADJACENT NEEDLES TO MOVE THE SAME INTO ENGAGEMENT WITH SAID PRESSER BAR AND TO CLOSE THE BEARDS THEREOF, (B) MEANS FOR SUPPORTING ONE OF SAID NEEDLE PRESSING BLADES IN A FIXED POSITION LONGITUDINALLY OF SAID ROW OF NEEDLES AND FOR MOVING THE OTHER TWO NEEDLE PRESSING BLADES IN A SELECTIVE STEP-BY-STEP MANNER BETWEEN A SUPERPOSED POSITION WITH SAID ONE NEEDLE PRESSING BLADE AND A POSITION ADJACENT OPPOSITE SIDES OF SAID ONE BLADE WHERE ALL THREE BLADES ARE IN A SUBSTANTIALLY SIDE-BY-SIDE POSITION, SAID BLADES BEING ENGAGEABLE WITH INCREASING AND DECREASING NUMBERS OF ADJACENT NEEDLES IN SUCCESSIVE COURSES, SAID SELECTIVE STEP-BYSTEP MOVEMENT OF SAID OTHER TWO NEEDLE PRESSING BLADES OCCURRING BETWEEN THE KNITTING OF SUCCESSIVE COURSES, AND