The pair of leg means are pivotally mounted to the top and to a secondary member located vertically downwardly from {HEAD ~ the pivotal connection} to {TAIL ~ the top} 
to
The pair of leg means are pivotally mounted to the top and to a secondary member located vertically downwardly from { HEAD ~ the pivotal connection } to { TAIL ~ the top }
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 TAIL TAIL TAIL TAIL TAIL TAIL