At this point the free end of the second toggle link may be pivoted toward the first arm 70 and {HEAD ~ its opening} 102 slipped over {TAIL ~ the head} of the shoulder screw 104 
slipped over
At this point the free end of the second toggle link may be pivoted toward the first arm 70 and { HEAD ~ its opening } 102 slipped over { TAIL ~ the head } of the shoulder screw 104
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH