Further, the shutter plate 15 is forcibly urged by the springs 10, 10 on the end face of the first outlet pipe 3 and is subject to self aligning action by the pins 16, 16 connecting the levers 14, 14 and the shutter plate 15 so as to eliminate vertical clearance which is otherwise formed between the shutter plate 15 and {HEAD ~ the end face} of {TAIL ~ the first outlet pipe} 3 
Further , the shutter plate 15 is forcibly urged by the springs 10 , 10 on the end face of the first outlet pipe 3 and is subject to self aligning action by the pins 16 , 16 connecting the levers 14 , 14 and the shutter plate 15 so as to eliminate vertical clearance which is otherwise formed between the shutter plate 15 and { HEAD ~ the end face } of { TAIL ~ the first outlet pipe } 3
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH