Cam 1 rotates about fixed axis A. When cam 1 rotates, point E of slide 2 follows square path q. Cam 1 is in contact with the four flat faces of the square opening in slide 2 which reciprocates vertically in guides f-f of slide 3. Slide 3 reciprocates horizontally along fixed guides e-e. The contour of cam 1 is made up of four circular arcs, with concentric portions ab and dc described from centre A, and portions be and ad from centres d and c. When the upper and lower faces of the square opening contact portions ab and dc of the cam, slide 3 travels horizontally together with inner slide 2. At this, point E describes the horizontal parts of its path. When the upper and lower faces of the opening contact portions be and ad, slide 3 is stationary and slide 2 travels vertically. At this, point E describes the vertical parts of its path q.
$3086$SmC,ML$