an overhead support assembly secured to {HEAD ~ the upright member} and extending from {TAIL ~ a front} thereof 
an overhead support assembly secured to { HEAD ~ the upright member } and extending from { TAIL ~ a front } thereof
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH