a frangible element disposed between said blade hammer and said blade support when said blade is in {TAIL ~ the folded condition} and engageable by {HEAD ~ said blade hammer} to dampen erection of said blade 
a frangible element disposed between said blade hammer and said blade support when said blade is in { TAIL ~ the folded condition } and engageable by { HEAD ~ said blade hammer } to dampen erection of said blade
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH