The combination 2, said pin means being supported by {TAIL ~ extensions} of said seal support ring at said opposite sides of {HEAD ~ said gate} 
The combination 2 , said pin means being supported by { TAIL ~ extensions } of said seal support ring at said opposite sides of { HEAD ~ said gate }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD