The lengths of the links comply with the conditions: B͞D=C͞E, F͞G=D͞E=B͞C and D͞F=E͞G. The mechanism is based on a translator consisting of parallel-crank linkages BDEC and DFGE. Links 3 and 7 turn about fixed axes B and C. When link 1 turns about fixed axis A, link 6 has translational motion and all of its points describe connecting-rod curves identical to the curve described by point F of connecting rod 2 in the four-bar linkage AHDB.
$726$LW,GI$