{HEAD ~ This web} of cardboard material is guided, as illustrated, under {TAIL ~ the wedge clamping beams} 3 and 4 and, therefore, spans the working surface 2 
is guided under
{ HEAD ~ This web } of cardboard material is guided , as illustrated , under { TAIL ~ the wedge clamping beams } 3 and 4 and , therefore , spans the working surface 2
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH