In its closed condition, the abutment structure is capable of receiving a forcible impulse by {HEAD ~ an implement}, such as {TAIL ~ an iron}, advancing along the upper surface of the seaming board 
such as
In its closed condition , the abutment structure is capable of receiving a forcible impulse by { HEAD ~ an implement } , such as { TAIL ~ an iron } , advancing along the upper surface of the seaming board
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH