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De Bird, Grou
De Bird is a Hollow Post mill in Grou, Friesland, Netherlands which was built in the 18th century. The mill is also known as De Burd and Koopmans Molen. Although not in full working order, it can turn in the wind. It is listed as a Rijksmonument, number 22915. (Click on "Technische gegevens" to view.) History Although a mill has stood on this site since 1640, ''De Bird'' was built in the 18th century. It was built to drain the De Burd polder, which was part of the Groot Jetsma farm. ''De Bird'' was built for A J de Jong. A later owner was Simon Koopmans, giving the mill its alternate name of ''Koopmans Molen''. In 1878, the mill was sold at auction for ƒ500. (Click on "Geschiedenis" to view.) Restorations of the mill were undertaken in 1950, 1960 and 1964. In November 1972, the mill was damaged in a storm. It was during the subsequent repair work that the roundhouse roof was tiled with pantiles. A further restoration was undertaken in 2004, during which the roundhouse roof was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Windpump
A windpump is a type of windmill which is used for pumping water. Windpumps were used to pump water since at least the 9th century in what is now Afghanistan, Iran and Pakistan. The use of wind pumps became widespread across the Muslim world and later spread to China and Indian subcontinent, India. Windmills were later used extensively in Europe, particularly in the Netherlands and the East Anglia area of Great Britain, from the late Middle Ages onwards, to drain land for agricultural or building purposes. Simon Stevin's work in the ''waterstaet'' involved improvements to the sluices and spillways to control flooding. Windmills were already in use to pump the water out, but in ''Van de Molens'' (''On mills''), he suggested improvements, including the idea that the wheels should move slowly, and a better system for meshing of the gear teeth. These improvements increased the efficiency of the windmills used to pump water out of the polders by three times. He received a patent on h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
