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