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