As {HEAD ~ the gripper} approaches {TAIL ~ the knife}, the drag may be placed on the gripper thereby compensating for pull of the blade 
approaches
As { HEAD ~ the gripper } approaches { TAIL ~ the knife } , the drag may be placed on the gripper thereby compensating for pull of the blade
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH