{HEAD ~ The gripper} and {TAIL ~ carriage} is then driven towards the trailing end of the loaf being sliced until said gripper engages said end 
{ HEAD ~ The gripper } and { TAIL ~ carriage } is then driven towards the trailing end of the loaf being sliced until said gripper engages said end
HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH