De Westermolen, Kollumerpomp
{{Infobox Windmill
| name = De Westermolen, Kollumerpomp
| image = Westermolen.jpg
| image_size = 250px
| caption = Westermolen, January 2010.
| name_of_mill = De Westermolen
| location_of_mill = Foijingaweg 55, 9293 LR Kollumerpomp
| coordinates = {{coord|53|18|22|N|6|11|46|E|type:landmark_region:NL|display=inline,title}}
| operator = Monumentenstichting Kollumerland c.a. en Nieuwkruisland
| built = 1845
| purpose = Drainage mill
| type = Smock mill
| storeys = Two-storey smock
| base_storeys = Single-storey base
| roundhouse_storeys =
| smock_sides =
| sail_number = Four sails
| sail_type = Common sails
| windshaft = Cast iron
| winding = Tailpole and winch
| auxpower = Electric motor
| pairs_of_millstones=
| stone_size =
| saw_type =
| pump_type = Archimedes' screw
| scoop_dia =
| lost =
| other =
}}
De Westermolen is a smock mill in Kollumerpomp, Friesland, Netherlands which was built in 1845. The mill has been restored to working order. It is listed as a Rijksmonument, number 23746.{{cite web|url=http://www.molens.nl/site/dbase/molen.php?&mid=842 |title=De Westermolen te Kollumerpomp, Technische gegevens |publisher=De Hollandsche Molen |language=nl |access-date=22 May 2014 |url-status=dead |archive-url=https://web.archive.org/web/20131202232918/http://www.molens.nl/site/dbase/molen.php?&mid=842 |archive-date=2 December 2013 }}
History
De Westermolen was built in 1845 to drain the {{convert|300|ha|acre}} Ooster- en Wester- Nieuwkruisland polder. As well as draining the polder, it could also pump water into the polder. The mill worked until 1959, when a stock broke in a storm. Permission was then sought to demolish the mill, but this was refused.{{cite web|url=http://www.molens.nl/site/dbase/molen.php?pagina=geschiedenis&molenid=842&toonoverzicht=1 |title=De Westermolen te Kollumerpomp, Geschiedenis |publisher=De Hollandsche Molen |language=nl |access-date=24 April 2010 |url-status=dead |archive-url=https://web.archive.org/web/20120603122702/http://www.molens.nl/site/dbase/molen.php?pagina=geschiedenis&molenid=842&toonoverzicht=1 |archive-date=3 June 2012 }} On 4 March 1961, the mill was bought by the municipality Kollumerland en Nieuwkruisland for ƒ1. The mill was restored at a cost of ƒ7,500. A diesel engine was placed in the mill to work the Archimedes' screw.{{cite book | last =Stichting De Fryske Mole | year = 1995| title = Friese Molens| pages = 148| publisher = Friese Pers Boekerij bv| location = Leeuwarden |language=nl |isbn= 90-330-1522-6}} A further restoration in 1984 by millwright Thijs Jellema of Burdaard saw the diesel engine replaced by an electric motor. Further work by Jellema in 1987 returned the mill to working order. Ownership of the mill had passed to the Monumentenstichting Kollumerland c.a. en Nieuwkruisland by 1996, when further restoration work was carried out. An electrically driven pump now stands next to the mill.
Description
{{For|an explanation of the various items of machinery|Mill machinery}}
De Westermolen is what the Dutch describe as a Grondzeiler. It is a two-storey smock mill on a single-storey base. There is no stage, the sails reaching down almost to ground level. The mill is winded by tailpole and winch. The smock and cap are thatched. The sails are Common sails. The sails on the inner stock have a span of {{convert|17.81|m|ftin}}, while those on the outer stock have a span of {{convert|17.96|m|ftin}}. The sails are carried on a cast-iron windshaft which was cast by Prins van Oranje, The Hague, in 1870. The windshaft also carries the brake wheel which has 60 cogs. This drives the wallower (33 cogs) at the top of the upright shaft. At the bottom of the upright shaft is the crown wheel, which has 41 cogs, drives a gearwheel with 42 cogs on the axle of the Archimedes' screw. The axle of the Archimedes' screw is {{convert|465|mm|ftin|0}} diameter. The screw is {{convert|1.37|m|ftin}} diameter . It is inclined at 16.7°. Each revolution of the screw lifts {{convert|969|L|impgal}} of water. The Archimedes' screw that pumped water into the polder has been removed.
Public access
De Westermolen is open on Friday mornings. It is also open on Saturday mornings if there is enough wind to work the mill.{{cite web|url=http://www.molens.nl/site/dbase/molen.php?pagina=informatie&mid=842&toonoverzicht=1 |title=De Westermolen te Kollumerpomp, Informatie |publisher=De Hollandsche Molen |language=nl |access-date=24 April 2010 |url-status=dead |archive-url=https://web.archive.org/web/20120603122711/http://www.molens.nl/site/dbase/molen.php?pagina=informatie&mid=842&toonoverzicht=1 |archive-date=3 June 2012 }}
References
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{{Dutch Windmills}}
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Category:Windmills in Friesland
Category:Windmills completed in 1845
Category:Smock mills in the Netherlands
Category:Windpumps in the Netherlands