Circular slotted link 4 is connected by, turning pairs A, C and B to links 5, 6 and 7 which are connected in turn, by turning pairs to the upright and to eccentric link 8. For a fixed position of lever 2, link 3 is stationary. The required stroke of link 1 is obtained by setting lever 2 in the proper position.
$1333$LG,VG$