closed by placing a retaining ring 69 into the blind hole 63 that bottoms against the aligned blade elements a tee bushing 70 is then passed through the control opening in the body section with the expanded head 72 of the bushing seated securely in a countersunk hole provided in the bushing the end 74 of the bushing protrudes beyond the end face of the hub and is threaded to accept a nut 75 that serves to lock the component parts of the wheel in closure the blades 60 of the combination wheel are axially positioned in the second and the third camming zones only accordingly the blades will not engage the lay in yarn until such time as the adjacent beards have been completely closed it must be further noted that because the camming surface extends axially between the blade elements the beards are held closed by the wheel while the blades are lifting the lay in yarn over the needles the beards remain closed until the lay in yarn passes over the closed entrance of the beard and is carried over the needle as the beard is reopened during its passage through the third camming zone as can be seen the entire tie in insertion and lay in landing operation is positively controlled without interruption from the start of the operation to its finish furthermore the component parts required to carry out the operation are located in the feed within a minimum amount of space accordingly a considerable amount of space is saved per feed and more feed per machine can be utilized resulting in higher.