The reel is rotated by running on {HEAD ~ the inner surface} of the tube which is driven by, for instance, {TAIL ~ a sewing machine motor} 
The reel is rotated by running on { HEAD ~ the inner surface } of the tube which is driven by , for instance , { TAIL ~ a sewing machine motor }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL