HTM78 Four Bar Chain

HTM78 Four Bar Chain

Using the four bar chain model, rotary motion is converted into oscillatory motion. A sturdy bench top base, with mounting feet and carry handles, incorporates a disc mounted on ball bearings as a crank. The disc has a protractors angle scale so that the rotational angle can be accurately viewed and measured. The crank pin connecting the crank to the disc can be set at different radii on the disc. The connecting rod and the oscillating lever are connected together in different lengths using quick-fit bolts. The oscillating crank is attached to a disc with its own protractor angle scale.

By rotating the crank and crank lever, the connecting rod is free to move vertically in an oscillatory motion.

Supplied with an instruction manual for student and lecturer, along with a two year warranty.

HTM78 Four Bar Chain
  • To investigate the conversion of rotary motion into linear oscillatory motion
  • To incorporate two rotating discs mounted apart carrying lever arms
  • One disc has lever arm attached at a known radius, whilst other arm has lever attached at its centre
  • Rotation of one disc creates oscillatory motion in other
  • To incorporate protractors on both discs for angular position viewing
  • To be a bench top unit with sturdy base plate, integral rubber feet and carry handles
  • Supplied with comprehensive instruction manual for student and lecturer
  • Investigation of the mechanical relationships on four bar chain mechanisms
  • Varying the crank radius, radius of oscillation and connecting rod length
  • Demonstration of the operation of axle pivot steering