The conveyor has carrying rods on which the hooks are suspended, with {TAIL ~ at least one descending discharging rod} by which {HEAD ~ the material} slides off under gravity 
The conveyor has carrying rods on which the hooks are suspended , with { TAIL ~ at least one descending discharging rod } by which { HEAD ~ the material } slides off under gravity
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL REL OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH