De Haensmolen is a Hollow Post mill in

Grou Grou ( nl, Grouw) is a town in the province Friesland of the Netherlands and had around 5655 citizens in January 2017. Since 2014 Grou is part of the municipality of Leeuwarden. The town is located on the lake and the . Heineken operated a distr ...

Friesland Friesland (, ; official fry, Fryslân ), historically and traditionally known as Frisia, is a province of the Netherlands located in the country's northern part. It is situated west of Groningen, northwest of Drenthe and Overijssel, north of ...

Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...

which was rebuilt in 2007 after it was demolished by a boat in 2004. The mill is listed as a

Rijksmonument A rijksmonument (, ) is a national heritage site of the Netherlands, listed by the agency Rijksdienst voor het Cultureel Erfgoed (RCE) acting for the Dutch Ministry of Education, Culture and Science. At the end of February 2015, the Netherlands ...

, number 22917. (Click on "Technische gegevens" to view.)

History

The mill was probably built in the 18th century to drain the Gallelannen. In 1941 it was bought by the province of Friesland. The mill was restored in 1993. The original location of the mill was at the junction of the Prinses Margrietkanaal and the Pikmeer. (Click on "Geschiedenis" to view.) On 9 January 2004, the mill was demolished in an accident in which the was in collision with the riverbank where the mill was located. The

Stichting De Fryske Mole The Stichting De Fryske Mole ( en, Frisian Mills Foundation) is a foundation for the preservation of windmills in the Dutch province Friesland, owning 42 of the 124 windmills in Friesland and closely co-operating with the Gild Fryske Mounders with ...

( en, Frisian Mills Foundation) had already planned to move the mill. The mill was restored at a new site in Grou, to the northwest of De Burd. A new body and windshaft were needed. The restoration of ''De Haensmolen'' was completed in October 2007 and it was officially reopened on 12 May 2008. On completion of the restoration, the mill was transferred to the Stichting Molens De Lege Midden ( en, De Lege Midden Mills Society).

Description

''De Haensmolen'' is what the Dutch describe as an ''spinnenkop''. It is a hollow post mill on a single-storey square roundhouse. The mill is winded by tailpole and winch. The roundhouse is covered in

pantiles The Pantiles is a Georgian colonnade in the town of Royal Tunbridge Wells, Kent, England. Formerly known as "The Walks" and the (Royal) "Parade", it leads from the well that gave the town its name. The area, developed following the discover ...

. The mill body is covered in vertical boards, while the roof of the mill is boarded horizontally. The sails are Common sails. They have a span of . The sails are carried on a cast-iron ''windshaft''. The ''windshaft'' also carries the ''brake wheel'' which has 28 cogs. This drives the ''wallower'' (15 cogs) at the top of the ''upright shaft''. Other machinery is now missing. The mill formerly drove an

Archimedes' screw The Archimedes screw, also known as the Archimedean screw, hydrodynamic screw, water screw or Egyptian screw, is one of the earliest hydraulic machines. Using Archimedes screws as water pumps (Archimedes screw pump (ASP) or screw pump) dates back ...

References

{{DEFAULTSORT:Haensmolen Windmills in Friesland Windmills completed in 2007 Hollow post mills in the Netherlands Windpumps in the Netherlands Rijksmonuments in Friesland