{HEAD ~ The second end} of the spring is coupled, by means of {TAIL ~ a movable carriage}, to the elongated flexible member 
{ HEAD ~ The second end } of the spring is coupled , by means of { TAIL ~ a movable carriage } , to the elongated flexible member
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH