A Simple Four Bar Linakge.
A four-bar linkage or simply a 4-bar or four-bar is the simplest movable linkage. It consists of four rigid bodies (called bars or links), each attached to two others by single joints or pivots to form a closed loop.
Four-bars are simple mechanisms common in mechanical engineering machine design and fall under the study of kinematics.
its crank lever mechanism........
vasuchamp1993 1 month ago