Descriptions:

• Four-bar linkages are used to convert a uniform continuous rotation into a non-uniform rotation or oscillation.
• The apparatus has a disc with angular scale which is used to measure the exact input angle.
• The crank pin can be located at different radii on the
• The four-joint link is a four-bar pivot gear.
• It converts rotary motion into oscillating motion.
• The elements are connected to each other via pivot joints.
• The output angle is read at the angle scale on the output disk.
• The elements are mounted on a base plate.
• Two handles make it easy to carry and stack the unit.
• The positions of the pivot joints can be varied to adjust the crank radius, oscillation radius and coupling length.
• The input angle is adjusted using the drive disk, and an angle scale is integrated into the base plate.
• The unit can be used to investigate the crank-rocker mechanism, the double rocker mechanism and the double crank.
• The experimental unit comprises the drive disk with the crank and coupling and the output disk with the rocker.