The hook is operatively connected to a power jack in such a manner that, upon {HEAD ~ actuation} of {TAIL ~ the power jack}, the frame is pulled toward the slat engaged by the hook thereby causing the carpet to be pulled by the prong members toward the adjacent wall edge 
of
The hook is operatively connected to a power jack in such a manner that , upon { HEAD ~ actuation } of { TAIL ~ the power jack } , the frame is pulled toward the slat engaged by the hook thereby causing the carpet to be pulled by the prong members toward the adjacent wall edge
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL 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 OTH