The pivot 8 wherein said wedge includes a pair of superposed wedges bearing on each other through two facing flat faces inclined to {HEAD ~ the axis} of {TAIL ~ said axial housing} 
The pivot 8 wherein said wedge includes a pair of superposed wedges bearing on each other through two facing flat faces inclined to { HEAD ~ the axis } of { TAIL ~ said axial housing }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL