The rocker pins have top ends which pivotally connect with the platform, and the pins extend downwardly to pivotally contact a pivot bearing member at their lower ends, so that {HEAD ~ the rocker pins} move to accommodate any horizontal movement of the platform and isolate {TAIL ~ platform movement} from the supporting bearing member 
move to isolate
The rocker pins have top ends which pivotally connect with the platform , and the pins extend downwardly to pivotally contact a pivot bearing member at their lower ends , so that { HEAD ~ the rocker pins } move to accommodate any horizontal movement of the platform and isolate { TAIL ~ platform movement } from the supporting bearing member
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 HEAD REL REL OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH