Machine 22w73 (with blower) ditiers I mm Machine 22w71 in being adjustable to perforate the leather once every four stitcher or once every five stitches instead of cverv two or three stitches, and the distance between the two lines of stitching mav be from ;iV' } "- >R steps of ;1V', as, ordered. Unless otherwise ordered, Machine 22w73 will be fitted for perforating a design containing three round punches. For other perforating designs see Imrm 2026w. Machine 22w74 is the same as Machine 22w73 except that it is not equipped with a blower.