A gear 42 is mounted on {HEAD ~ shaft} 39 and meshes with {TAIL ~ a gear} 43 mounted on the shaft 46 of a driving motor 44 
A gear 42 is mounted on { HEAD ~ shaft } 39 and meshes with { TAIL ~ a gear } 43 mounted on the shaft 46 of a driving motor 44
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH