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