Peaucellier-Lipkin linkages

Peaucellier–Lipkin linkage:
bars of identical colour are of equal length

Introduction

The Peaucellier–Lipkin linkage (or Peaucellier–Lipkin cell, or Peaucellier–Lipkin inversor), invented in 1864, was the first true planar straight line mechanism – the first planar linkage capable of transforming rotary motion into perfect straight-line motion, and vice versa.

Tools

• 

  Wrenches

References

• Peaucellier–Lipkin_linkage