De Modderige Bol, Goëngahuizen

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De Modderige Bol, Goëngahuizen
De Modderige Bol Goengahuizen 04.JPG
De Modderige Bol, October 2007
Origin
Mill nameDe Modderige Bol
Mill locationNabij Peansterdyk 10 8497 NL Goëngahuizen
Coordinates53°04′59″N 5°53′06″E / 53.08306°N 5.88500°E / 53.08306; 5.88500Coordinates: 53°04′59″N 5°53′06″E / 53.08306°N 5.88500°E / 53.08306; 5.88500
Operator(s)Stichting De Fryske Mole
Year builtMid-19th century
Information
PurposeDrainage mill
TypeHollow Post Mill
Roundhouse storeysSingle storey roundhouse
No. of sailsFour sails
Type of sailsCommon sails
WindshaftWood
WindingTailpole and winch
Type of pumpArchimedes' screw

De Modderige Bol is a Hollow Post mill in Goëngahuizen, Friesland, Netherlands which has been restored to working order. The mill is listed as a Rijksmonument, number 34001.[1]

History[]

The date that De Modderige Bol was built is unknown. The earliest record is its appearance on a map dated 1848.[2] Until 1952, the mill drained the polder Adamse, which had an area of 150 pondemaat (55 ha; 140 acres).[3] The mill was restored in 1954 and 1969. A further restoration was undertaken in 1978 by millwrights Bouwbedrijf Van Zuiden of Tjerkwerd. On 9 November 1978, the mill was sold to Stichting De Fryske Mole (English: Frisian Mills Foundation). The mill was restored again in 1992–93.[2]

Description[]

De Modderige Bol 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 clad in pantiles and mill body is covered in vertical boards, while the roof of the mill is boarded and covered in felt. The sails are Common sails. They have a span of 11.90 metres (39 ft 1 in). The sails are carried on a wooden windshaft. The windshaft also carries the brake wheel which has 43 cogs. This drives the wallower (21 cogs) at the top of the upright shaft. At the bottom of the upright shaft, the crown wheel, which has 31 cogs drives a gearwheel with 30 cogs on the axle of the Archimedes' screw. The axle of the Archimedes' screw is 250 millimetres (9¾ inches) diameter. The screw is 750 millimetres (2 ft 6 in) diameter and 3.40 metres (11 ft 2 in) long. It is inclined at 24°. Each revolution of the screw lifts 106 litres (23 imp gal) of water.[2]

Public access[]

De Modderige Bol is open by appointment.[4]

References[]

  1. ^ "Technische gegevens" (in Dutch). De Hollandsche Molen. Archived from the original on 31 May 2012. Retrieved 19 February 2010. (Click on "Technische gegevens" to view.)
  2. ^ a b c Stichting De Fryske Mole (1995). Friese Molens (in Dutch). Leeuwarden: Friese Pers Boekerij bv. pp. 212, 259. ISBN 90-330-1522-6.
  3. ^ "Goengahuizen, Friesland" (in Dutch). Molendatabase. Retrieved 19 February 2010.
  4. ^ "Informatie" (in Dutch). De Hollandsche Molen. Archived from the original on 31 May 2012. Retrieved 19 February 2010. (Click on "Informatie" to view.)
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