The force transmission or transport device 7, wherein {TAIL ~ the friction clutch} comprises {HEAD ~ a pair} of friction wheels  
The force transmission or transport device 7 , wherein { TAIL ~ the friction clutch } comprises { HEAD ~ a pair } of friction wheels
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH