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