This displaceable frame member 17 is interconnected at opposed ends thereof on {TAIL ~ a support guide block} 37 which is secured to a respective one of opposed parallel guide rods 40 and displaced thereon by {HEAD ~ drive means} in the form of a link belt 41 driven by suitable motor means  
This displaceable frame member 17 is interconnected at opposed ends thereof on { TAIL ~ a support guide block } 37 which is secured to a respective one of opposed parallel guide rods 40 and displaced thereon by { HEAD ~ drive means } in the form of a link belt 41 driven by suitable motor means
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH