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