{HEAD ~ Apparatus} 8 wherein {TAIL ~ said locking means} comprises a centrifugal lock operable above a given angular velocity of said sections to effect said locking action 
wherein
{ HEAD ~ Apparatus } 8 wherein { TAIL ~ said locking means } comprises a centrifugal lock operable above a given angular velocity of said sections to effect said locking action
HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH