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Cornelis Corneliszoon van Uitgeest
Cornelis Corneliszoon van Uitgeest, or Krelis Lootjes (c. 1550 - c. 1600) was a Dutch windmill owner from Uitgeest who invented the wind-powered sawmill, which made the conversion of log timber into planks 30 times faster than before.〔("Cornelis Corneliszoon van Uitgeest (1550-1607), inventor of the wind powered saw mill", Industrial Heritage Park ''De Hoop'' )〕
==Biography==
Little is known of his early life. Cornelis Cornelisz was born in the village of Uitgeest and later married Trijn Pieters, the daughter of the flour miller who owned "''De Krijger''" on the ''Meldijk'' there.〔 In 1594 he built his first sawmill, a small mill which floated on a raft. In 1595 the mill was sold and moved to Alkmaar. The remains of the mill were accidentally discovered in 2004 during excavations along the Noordhollandsch Kanaal canal.
His wind-powered sawmill used a crankshaft to convert a windmill's circular motion into a back-and-forward motion powering the saw. In his old age, he became a friend of the hydraulic engineer Jan Adriaanszoon Leeghwater who mentioned him as the inventor of the ''saag molen'' in his book on the Haarlemmermeer.〔(Saag Molens ) were invented in Uitgeest, according to the "Haarlemmermeer boeck" by Jan Adriaanszoon Leeghwater〕 They met during his first major hydraulic project, which was to create the Beemster, a polder that was pumped dry during the period 1609 through 1612.
He was granted a patent on his crankshaft in December, 1593 and was granted an additional patent for improvements in December, 1597 that was documented in the ''Resolutiën van de Staten van Holland'' on December, 1597.〔Dordrecht archives of the Staten van Holland〕〔(Dutch inventions ) by Cornelisz van Uitgeest in the National Archives (Dutch)〕 In his request, he called himself a farmer who needed to support a wife and children.〔 His sawmill "Het Juffertje" soon developed into a more advanced version, a type known today as the ''paltrokmolen'' (post mill), which played a key part in the economic success of the Dutch Republic during the Dutch Golden Age in the 17th century by enabling the mass construction of ships for overseas trade. The mill turned the Zaan district, north of Amsterdam, into the world's first industrial area.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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