Reference numeral 38 denotes {TAIL ~ an upper layer feed arm} having {HEAD ~ the bifurcated base} pivoted to the lower end of the support arm 36 
Reference numeral 38 denotes { TAIL ~ an upper layer feed arm } having { HEAD ~ the bifurcated base } pivoted to the lower end of the support arm 36
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH