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