A shut off member is provided for {HEAD ~ each receiving container} of {TAIL ~ the preceding stage} in the said channel 
of
A shut off member is provided for { HEAD ~ each receiving container } of { TAIL ~ the preceding stage } in the said channel
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH