Crank 1, rotating about fixed axis x-x, is connected by a turning pair to link 2. The kinematic pair connecting links 2 and 3 is designed as circular slider 2 and slotted link 3 with slot a. Link 3 turns about fixed axis y-y. When crank 1 rotates about axis x-x, slider 2 moves in slot a of slotted link 3 which oscillates about axis y-y under the condition that the axes of all the turning pairs intersect at a single point .
$972$LG,4L$