By {HEAD ~ the movement} of {TAIL ~ the needle} in up and down direction, the discharging hole 144 formed on the needle sheet 143 is opened or closed 
of
By { HEAD ~ the movement } of { TAIL ~ the needle } in up and down direction , the discharging hole 144 formed on the needle sheet 143 is opened or closed
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH