Flour and cereal industry
The case of the privilege of the merchant Krasnoperov on the Samovka invented by them to purify the semolina
The case of the issuance of a 10-year-old privilege of the peasant of the Perm province, the Yekaterinburg county, the Nizhnyagilsky Demidov Plants, Mikhail Klementiev Uhkov, on the Beak invented
Klementy Ushkov (1782/1783-1859), an Ural hydraulic engineer. He was born into the family of an Old Believer serf peasant. Ushkov worked at the mills' construction and delivered coal for the Demidov plants. In the 1840s, he developed a plan for turning the Chernaya River into a pond of one of Demidov's mining plants. His idea solved the problem of machine idle time in little snow winters or dry summers. This invention granted him freedom. He moved to Yekaterinburg, where he built several mills and founded the first cloth production in the Urals.
The issue of issuing a 5-year-old privilege of Verkhneudinsky 1 Guild of the merchant, honorable citizen Kurbatov, on the way invented by it method and shell for the preparation of wheat grains to grind
Apollon Kurbatov (1798–1872), a first-guild Verkhneudinsk merchant, honorary citizen and philanthropist. He continued the family business, owned a glass factory. Also, he had the furs and tea wholesale business and gold mines on the Lena. He was elected as mayor and church head several times. Kurbatov had friendly relations with the Decembrists A. N. Muravyov and brothers V. K. and M. K. Küchelbecker. By the order of the Ministry of Internal Affairs, he collected materials about the natural resources of Lena region. Kurbatov was a full member of the Siberian branch of the Russian Geographical Society, sharing his knowledge with many local historians. He collected samples of minerals from Zabaikalye.
Krasnopyorov, a merchant and self-taught inventor of the mill technology.