Another subsidiary object is to provide {HEAD ~ a shock absorber} which will accommodate {TAIL ~ movement} in a horizontal plane —pivotal movement between trailer and towing vehicle 
accommodate
Another subsidiary object is to provide { HEAD ~ a shock absorber } which will accommodate { TAIL ~ movement } in a horizontal plane — pivotal movement between trailer and towing vehicle
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH