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