said grinding wheel means being mounted for rotation about {TAIL ~ an axis} which is inclined at an acute angle to and which diverges from the direction of {HEAD ~ movement} of the stock 
said grinding wheel means being mounted for rotation about { TAIL ~ an axis } which is inclined at an acute angle to and which diverges from the direction of { HEAD ~ movement } of the stock
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH