This arrangement also operates as {HEAD ~ a safety feature} which permits {TAIL ~ movement} of the jogger assembly responsive to any impediment which may strike or be struck by the jogger plate and jogger 
permits
This arrangement also operates as { HEAD ~ a safety feature } which permits { TAIL ~ movement } of the jogger assembly responsive to any impediment which may strike or be struck by the jogger plate and jogger
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH