Apparatus 6, the abutment structure including an extremity capable of receiving in the closed condition of the abutment structure a forcible impulse by an implement advancing along the upper surface of the seaming board toward the one of {HEAD ~ the opposing ends} between {TAIL ~ the opposing sides} 
Apparatus 6 , the abutment structure including an extremity capable of receiving in the closed condition of the abutment structure a forcible impulse by an implement advancing along the upper surface of the seaming board toward the one of { HEAD ~ the opposing ends } between { TAIL ~ the opposing sides }
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