{HEAD ~ The apparatus} 1 wherein the teeth are bolted to the beam and {TAIL ~ the cutting flanges} are bolted to the teeth so the teeth and the cutting flanges may readily be replaced 
wherein
{ HEAD ~ The apparatus } 1 wherein the teeth are bolted to the beam and { TAIL ~ the cutting flanges } are bolted to the teeth so the teeth and the cutting flanges may readily be replaced
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH