whereby {TAIL ~ the said endless linear means} extends continuously between all the second rotatable means and {HEAD ~ said first rotatable means}, 
whereby { TAIL ~ the said endless linear means } extends continuously between all the second rotatable means and { HEAD ~ said first rotatable means } ,
OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH