In “closed” position the plate supporting assembly is positioned near the supporting arm 205, and {HEAD ~ securing rod} 309 is locked in the notch on {TAIL ~ securing plate} 305 that is closest to the supporting arm 205 
In “ closed ” position the plate supporting assembly is positioned near the supporting arm 205 , and { HEAD ~ securing rod } 309 is locked in the notch on { TAIL ~ securing plate } 305 that is closest to the supporting arm 205
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH