Arc-shaped member 3, rigidly attached to fixed member 4, has s lots B of complex shape. Links 1, located between members 3 and 4, rotate about fixed axes C, D, E and F. As links 1 rotate, they engage runner 2 and move it a long curvilinear guide slot B of member 3. By rotation of links 1 in one or the other direction, and by changingh the shape of sots B, the pat of runner 2 can be changed so that different patterns of lace are obtained.
$3161$SmC,FD$