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