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