{HEAD ~ The adjusting knob} 47 is screwed at the lower end in the machine frame 2 and has a smaller diameter hole 48 in the upper end portion and a larger diameter hole 49 in {TAIL ~ the lower end portion} 
{ HEAD ~ The adjusting knob } 47 is screwed at the lower end in the machine frame 2 and has a smaller diameter hole 48 in the upper end portion and a larger diameter hole 49 in { TAIL ~ the lower end portion }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL