Category
Linkages
4 articles in this category.
The Linkage That Walks: Chebyshev’s Lambda Machine
In the 1860s, mathematician Pafnuty Chebyshev designed a three-bar linkage whose foot traces a flattened path — and built walking machines decades before robots existed. Watch one walk.
LinkagesCrank and Slider: The Mechanism Inside Every Piston Engine
The crank-slider converts rotation to reciprocation and back — it is the beating heart of engines, compressors and pumps. Watch the linkage move and learn why the strokes are not symmetric.
LinkagesDrawing a Perfect Straight Line with No Slides: The Peaucellier Linkage
For 2,000 years nobody could make a machine trace a mathematically straight line — until 1864, when a French naval officer solved it with nothing but seven bars. See it move.
LinkagesThe Four-Bar Linkage: The Simplest Machine That Draws Curves
Four bars, four joints, endless motion. See how the four-bar linkage turns steady rotation into rocking and tracing motion, why Grashof’s law predicts its behaviour, and where you meet it daily.