a slot extending from {HEAD ~ surface portions} of {TAIL ~ said lever member} into said passageway and between said first and second openings, 
of
a slot extending from { HEAD ~ surface portions } of { TAIL ~ said lever member } into said passageway and between said first and second openings ,
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH