The lengths of the links comply with the conditions: A͞H=C͞N, H͞F=N͞G, F͞G=D͞E=A͞C, H͞D=N͞E and A͞D=C͞E. The mechanism is based on a translator consisting of parallel-crank linkages ADEC and HFGN. Links 3 and 7 turn about fixed axes B and C. When link 1 turns about fixed axis A, link 5 has translational motion and all of its points describe the same connecting-rod curve that is described by point F of connecting rod 2 in four-bar linkage AHKB.
$725$LW,GI$