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