{HEAD ~ The improvement} 2 wherein {TAIL ~ said arm one end portion} is angled for pivoted support by said housing 
{ HEAD ~ The improvement } 2 wherein { TAIL ~ said arm one end portion } is angled for pivoted support by said housing
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH