first and second screw conveyor members rotatably mounted adjacent {HEAD ~ the bottom} of {TAIL ~ said sloped hopper bottom} 
of
first and second screw conveyor members rotatably mounted adjacent { HEAD ~ the bottom } of { TAIL ~ said sloped hopper bottom }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL