When link 1 rotates about fixed axis A, slotted link 2 oscillates about fixed axis C. The axis of slotted link 2 does not pass through centre C of slotted-link oscillation. The angle β of oscillation is determined by the equation β=arcsin((A͞B-C͞D)/A͞C)+arcsin((A͞B+C͞D)/A͞C). where C͞D is the distance between the axis of slotted link 2 and axis C.
$915$LG,3L$