{HEAD ~ The clutch mechanism} transmits {TAIL ~ the driving force} of the input rotating element by the contraction of the coil spring 
transmits
{ HEAD ~ The clutch mechanism } transmits { TAIL ~ the driving force } of the input rotating element by the contraction of the coil spring
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH