vertical positioning of the needles in fig3 a e provides a common frame of reference in fig3 a e vertical arrows in close proximity to the needles 18 indicate the direction of movement of the needles likewise horizontal arrows in close proximity to the sinkers 16 in fig3 a e indicate direction of movement of the sinkers with a sinker not moving in the radial direction if there is no horizontal arrow closely associated therewith as illustrated in fig3 a and 3b needles 18 engage and draw down the jersey yarn 20 so as to form knitted loops of a base fabric structure 40 the sinkers 16 retract between points a and b when the needles 18 reach point c the sinkers 16 have returned to a forward position and the lay in yarn 12 is engaged by the needles that are running with butts in track 1 at this point the nose 14 of the sinker remains forward so that the drawing down of the needle 18 with the lay in yarn 12 carries the lay in yarn over the top of the sinker nose 14 as best seen in fig1 since every fourth needle 18 draws down the lay in yarn 12 and since the noses 14 remain forward from point c until past point d the drawing down of every fourth needle pulls the lay in yarn over the noses of four adjacent sinkers 16 when the needles reach points c and d they.