Thus, {HEAD ~ the locking device} that retains the hinged door 63 in its closed position comprises the elastically engaged portion 67a of the operating lever 67 and {TAIL ~ the U shaped engaging bar} 62 of the base 1 
comprises
Thus , { HEAD ~ the locking device } that retains the hinged door 63 in its closed position comprises the elastically engaged portion 67a of the operating lever 67 and { TAIL ~ the U shaped engaging bar } 62 of the base 1
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH