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