Simulation of planar bar linkages
using Cinderella
The four-bar linkage
Grashof linkages
Non-Grashof linkages
Approximating a straight line
Chebyshev
Evans
Hoekens
Roberts
Watt
Burmester
Schiner's pantograph
Sylvester's pantograph and Roberts' theorem
Scott Russell linkage
Watt's parallelogram
Linkages for tracing curves
Conic sections
Ellipsoids
Based on an anti-parallelogram
Based on a driving circle
Kopp
L'Hôpital
Delaunay
Parabolas
Hyperbolas
Other curves
Limaçon
Oval of Cassini
Cissoid
Lemniscata
Watt six-bar linkage
Svoboda's logarithmic linkage
Stephenson six-bar linkage
Klann linkage
Jansen's linkage
Inversors
Peaucellier
(1864)
Hart (1874)
Sylvester-Kempe (1877)
Artobolevskii-Dijksman (1955-1993)
Dijksman (1994)
The 3-RPR planar parallel manipulator
The angle trisector
Functional linkages
Translator
Multiplier
Adder
Rotator
Periodic patterns
The Stephenson pattern
The Watt pattern
The pyramid pattern
The finger pattern
A bit of fun with cardboard and a paper fastener
Consul, the educated monkey, and Sylvester's plagiograph
Svoboda's adding machine
When things become much harder
The double butterfly linkage
(also called the double flier eight-bar linkage)
The Bennett's twelve-bar linkage