The lengths of the links comply with the conditions: A͞D=C͞E=E͞F=E͞K=D͞G, A͞C=D͞E=G͞K=A͞F and H͞K=H͞F. Figures ADEC and DGKE form parallel-crank linkages and figures AFEC and HKEF form rhomboid linkages. Link 1 turns about fixed axis A and is connected by turning pairs F to links 6 and 7. Link 5 turns about fixed axis A and is connected by turning pairs D to links 3 and 9. Link 4 turns about fixed axis C and is connected by turning pairs E to links 3, 7 and 8. Link 2 is connected by turning pairs G, H and K to links 9, 6 and 8. When link 1 turns about axis A, link 2 has rectilinear translation in a direction perpendicular to line AC.
$719$LW,GI$