Head 1 is keyed to shaft 4 and rotates about fixed axis A-A. Head 1 has four symmetrically located eyes a which are connected by turning pairs B to rakes 2. Rakes 2 carry barrel-shaped rollers 3 which rotate freely about axes C and roll along curvilinear working surface b of fixed cam 5. When shaft 4 rotates, rakes 2 have a complex motion about crossed axes A-A and B which are perpendicular to one another.
$3090$SmC,ML$