A U shaped metal spring is disposed over the solid shaft adjacent an outboard end of the tubular shaft with {TAIL ~ opposite legs} of {HEAD ~ the spring} in sliding engagement on corresponding flat sides of the solid shaft 
A U shaped metal spring is disposed over the solid shaft adjacent an outboard end of the tubular shaft with { TAIL ~ opposite legs } of { HEAD ~ the spring } in sliding engagement on corresponding flat sides of the solid shaft
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH