With either embodiment a drive is operably connected to the shaft for causing the shaft to rotate about {TAIL ~ its axis} and a drum mounted on the shaft to rotate with {HEAD ~ the shaft} 
With either embodiment a drive is operably connected to the shaft for causing the shaft to rotate about { TAIL ~ its axis } and a drum mounted on the shaft to rotate with { HEAD ~ the shaft }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD