75 c 75 d sliders 75 extend forward to detents 74 through springs 70 and into slots 77 because cylinders 50 and sliders 75 are configured on four levels upon entering slots 77 the sliders 75 engage with a translation section such as compensating plates 78 in order that movement imparted by drive rods to sliders 75 will be translated to a plane of motion approximate the bottom of hook bills 42 compensating plates 78 engage looper clips 67 so that forward motion imparted by rod 54 is communicated to slider bar 75 and via compensating plate 78 to looper clip 67 which causes looper clip front end 68 to close the lip formed by the hook bill 42 of a corresponding hook 41 when pneumatic pressure is released from cylinder 50 the action of spring 70 pushing against front mounting plate 62 and detent 74 moves all of rod 54 slider 75 compensating plate 78 and looper clip 67 rearward which again exposes the lip of loop hook 41 formed by hook bill 42 in fig3 a it can be seen that cylinders 50 corresponding to slider 75 c and 75 d are activated so that pistons 52 have pushed rods 54 forward thereby pushing sliders 75 c 75 d forward and compressing springs 70 c and 70 d the corresponding compensating plates 78 are pushed forward as are the looper clip fronts 68 c and 68 d fig3 b shows the reverse angle view of the same configuration.