Clamp member 76 is provided with pointed teeth 86 at opposite corners thereof which bitingly engage interior surface 84 of supporting rail 12 thereby preventing {HEAD ~ longitudinal movement} of {TAIL ~ article restraining bar} 28 
of
Clamp member 76 is provided with pointed teeth 86 at opposite corners thereof which bitingly engage interior surface 84 of supporting rail 12 thereby preventing { HEAD ~ longitudinal movement } of { TAIL ~ article restraining bar } 28
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 TAIL TAIL OTH