{HEAD ~ a pair} of {TAIL ~ biasing mean} stretched between the corresponding sleeves and the fitting member to bias said other movable shaft toward said one shaft 
of
{ HEAD ~ a pair } of { TAIL ~ biasing mean } stretched between the corresponding sleeves and the fitting member to bias said other movable shaft toward said one shaft
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH