{HEAD ~ A mechanism} is provided for fixing {TAIL ~ the container} relative to the movable crosspiece during extrusion so that auxiliary jacks, provided for moving the container independently of the crosspiece, can be used during extrusion to assist the main jack 
is provided for fixing
{ HEAD ~ A mechanism } is provided for fixing { TAIL ~ the container } relative to the movable crosspiece during extrusion so that auxiliary jacks , provided for moving the container independently of the crosspiece , can be used during extrusion to assist the main jack
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL 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 OTH OTH OTH OTH