Alternatively, the side walls 47, 38 and {HEAD ~ back wall} 39 of {TAIL ~ the first pivot mount} 40 can be formed with one or more pieces of metal and are attached to the support beam 31 by welding them to the support beam 31 
Alternatively , the side walls 47 , 38 and { HEAD ~ back wall } 39 of { TAIL ~ the first pivot mount } 40 can be formed with one or more pieces of metal and are attached to the support beam 31 by welding them to the support beam 31
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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