The apparatus incorporates {HEAD ~ a frame structure} having {TAIL ~ a hydraulically driven slide support} guided by parallel structural members of the frame 
having
The apparatus incorporates { HEAD ~ a frame structure } having { TAIL ~ a hydraulically driven slide support } guided by parallel structural members of the frame
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH