1850 – Chebyshev Walking platform – Russian
This linkage was invented by the Russian mathematician Pafnuty Chebyshev (1821-1894) Model as seen in Russian Technology Museum – Moscow. See the above Chebyshev walker in my compilation video clip here. Wouter Scheublin's Chebyshev-based walking bookcase. see Wouter Scheublin's Chebyshev-based walking table here.