The intersection has {HEAD ~ a mechanism} for turning the movable section from extending in the direction of the first rails to extending in {TAIL ~ the direction} of the second rails for changing the conveying direction of the object 
The intersection has { HEAD ~ a mechanism } for turning the movable section from extending in the direction of the first rails to extending in { TAIL ~ the direction } of the second rails for changing the conveying direction of the object
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH 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 OTH OTH