a blade hammer on a root portion of said blade engageable with {HEAD ~ a blade support} to position {TAIL ~ said blade} in the run condition, and 
to position
a blade hammer on a root portion of said blade engageable with { HEAD ~ a blade support } to position { TAIL ~ said blade } in the run condition , and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH