The gripper arms have pin disposed in channels of the housing, the channels being angularly oriented to urge {HEAD ~ the gripper arms} to {TAIL ~ fully closed and fully opened positions} and for controlling the separation of the gripper arms for each position of the slide relative to the housing 
to
The gripper arms have pin disposed in channels of the housing , the channels being angularly oriented to urge { HEAD ~ the gripper arms } to { TAIL ~ fully closed and fully opened positions } and for controlling the separation of the gripper arms for each position of the slide relative to the housing
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH