More particularly, it is an object of the present invention to provide a face to face plate type swivel with an interposed frictionless bearing material which functions to center the swivel plates and to decrease {HEAD ~ the resistance} to {TAIL ~ rotation} of the rotary plate 
to
More particularly , it is an object of the present invention to provide a face to face plate type swivel with an interposed frictionless bearing material which functions to center the swivel plates and to decrease { HEAD ~ the resistance } to { TAIL ~ rotation } of the rotary plate
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 OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH