The slide element 8 also has at the rear end thereof {HEAD ~ an extension} 13 extending through the cut 6 into {TAIL ~ the recess} 7 where the extension 13 is enlarged to form a vertical end surface 14 
The slide element 8 also has at the rear end thereof { HEAD ~ an extension } 13 extending through the cut 6 into { TAIL ~ the recess } 7 where the extension 13 is enlarged to form a vertical end surface 14
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH