Circular slotted link 4 is connected by turning pairs B and C to links 5, 7 and 6. Link 5 is connected by turning pair D to link 3, and links 6 and 7 are connected by turning pairs to eccentric crank 8. For a fixed position of lever 2, link 3 is stationary. The required stroke of link 1 is obtained by setting lever 2 to the proper position.
$1336$LG,VG$