A gripper assembly is provided which rides on guide shafts adjacent said channel with {TAIL ~ the movement} of the gripper in the channel constantly being monitored by {HEAD ~ an encoder connected thereto} and positive drive is supplied to the gripper towards the blade by a clutch means in conjunction with a rack and pinion arrangement 
A gripper assembly is provided which rides on guide shafts adjacent said channel with { TAIL ~ the movement } of the gripper in the channel constantly being monitored by { HEAD ~ an encoder connected thereto } and positive drive is supplied to the gripper towards the blade by a clutch means in conjunction with a rack and pinion arrangement
OTH OTH OTH OTH OTH 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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH