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