As those skilled in the art will readily appreciate the reverse situation is possible, with {TAIL ~ pivot pins} mounted on the supporting arms extending inwards and received in bushings within {HEAD ~ the central beam} 
As those skilled in the art will readily appreciate the reverse situation is possible , with { TAIL ~ pivot pins } mounted on the supporting arms extending inwards and received in bushings within { HEAD ~ the central beam }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD