"nizhny" - 1 õppematerjal

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, . . . , , . , , , . , . 1  , 70- , . 12 . . In Russia, in the 1780s, Ivan Kulibin developed a human-pedalled, three-wheeled carriage with modern features such as a flywheel, brake, gear box, and bearings; however, it was not developed further Ivan Petrovich Kulibin (April 21, 1735 - August 11, 1818) was a Russian mechanic and inventor. He was born in Nizhny Novgorod in the family of a trader. From childhood, Kulibin displayed an interest in constructing mechanical tools. Soon, clock mechanisms became a special interest of his. During 1764-1767 he built an egg-shaped clock, containing a complex automatic mechanism. In 1769 Kulibin gifted this clock to Catherine II, who assigned Kulibin to be in charge of the mechanical workshop in the Academy of Sciences of Saint Petersburg.