{TAIL ~ A mechanism} 1, wherein {HEAD ~ the pivotally mounted arm} is carried by an angularly resilient pivot 
{ TAIL ~ A mechanism } 1 , wherein { HEAD ~ the pivotally mounted arm } is carried by an angularly resilient pivot
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH