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