De Groene Molen, Joure
Encyclopedia
De Groene Molen is a hollow post mill in Joure
, Friesland
, Netherlands
which was built c1800. The mill has been restored so that it can turn by wind. It is listed as a Rijksmonument
, number 18208.
. In 1937, a 6 hp Lister
diesel engine was installed. On 18 December 1956, the mill was bought by the Gemeente Haskerland. In 1992, the mill was restored by millwright
Westra of Franeker
. A new buck and sails were fitted.
On 18 January 2007, the mill was severely damaged in a storm, with parts of the roof of the buck being blown off. The mill was dismantled on 12 December 2008 and restored by millwrights Boubedrijf Hiemstra BV, Tzummarum
. On 13 May 2009, the renewed roundhouse, buck and sails were re-erected on the base.
Since the last restoration the Archimedes screw can be driven by either the Lister engine or by wind power. The crown wheel at the bottom of the upright shaft drives a layshaft which is connected by belt to a second layshaft. The driving gear on the end of this layshaft has 16 teeth; it drives a gear with 64 teeth on the axle of the Archimedes screw, which is inclined at 19°. A second belt is used to drive this layshaft by the Lister engine.
Joure
Joure is a town in the Dutch province of Friesland. With 13,000 inhabitants, it is the largest town in the municipality of Skarsterlân.-History:...
, Friesland
Friesland
Friesland is a province in the north of the Netherlands and part of the ancient region of Frisia.Until the end of 1996, the province bore Friesland as its official name. In 1997 this Dutch name lost its official status to the Frisian Fryslân...
, Netherlands
Netherlands
The Netherlands is a constituent country of the Kingdom of the Netherlands, located mainly in North-West Europe and with several islands in the Caribbean. Mainland Netherlands borders the North Sea to the north and west, Belgium to the south, and Germany to the east, and shares maritime borders...
which was built c1800. The mill has been restored so that it can turn by wind. It is listed as a Rijksmonument
Rijksmonument
A rijksmonument is a National Heritage Site of the Netherlands, listed by the agency Rijksdienst voor het Cultureel Erfgoed acting for the Dutch Ministry of Education, Culture and Science.-History and criteria:...
, number 18208.
History
De Groene Molen was built c1800. It drained the 19 hectares (46.9 acre) Bleeker polderPolder
A polder is a low-lying tract of land enclosed by embankments known as dikes, that forms an artificial hydrological entity, meaning it has no connection with outside water other than through manually-operated devices...
. In 1937, a 6 hp Lister
R A Lister and Company
R A Lister & Company was founded in Dursley, Gloucestershire, in 1867 by Sir Robert Ashton Lister , to produce agricultural machinery. The family was originally from Yorkshire but Ashton's father relocated to Dursley in 1817....
diesel engine was installed. On 18 December 1956, the mill was bought by the Gemeente Haskerland. In 1992, the mill was restored by millwright
Millwright
A millwright is a craftsman or tradesman engaged with the construction and maintenance of machinery.Early millwrights were specialist carpenters who erected machines used in agriculture, food processing and processing lumber and paper...
Westra of Franeker
Franeker
Franeker is one of the eleven historical cities of Friesland and capital of the municipality of Franekeradeel. It is located about 20 km west of Leeuwarden on the Van Harinxma Canal. As of 1 January 2006, it had 12,996 inhabitants. The city is famous for the Eisinga Planetarium from around...
. A new buck and sails were fitted.
On 18 January 2007, the mill was severely damaged in a storm, with parts of the roof of the buck being blown off. The mill was dismantled on 12 December 2008 and restored by millwrights Boubedrijf Hiemstra BV, Tzummarum
Tzummarum
Tzummarum is a small village in Franekeradeel in the province Friesland of the Netherlands and has around the 1340 citizens ....
. On 13 May 2009, the renewed roundhouse, buck and sails were re-erected on the base.
Description
De Groene Molen is what the Dutch describe as an Spinnenkop met Stelling. It is a hollow post mill with a roundhouse on a single storey base. The stage is at first floor level 4.2 metre above ground level. The mill is winded by tailpole and winch. The buck and roof are covered in horizontal boards. The sails are common sails. They have a span of 13.1 metre. The sails are carried on a wooden windshaft. The windshaft also carries the brake wheel which has 39 cogs. This drives the wallower (19 cogs) at the top of the upright shaft. At the bottom of the upright shaft is the crown wheel (see photo of engine below).Since the last restoration the Archimedes screw can be driven by either the Lister engine or by wind power. The crown wheel at the bottom of the upright shaft drives a layshaft which is connected by belt to a second layshaft. The driving gear on the end of this layshaft has 16 teeth; it drives a gear with 64 teeth on the axle of the Archimedes screw, which is inclined at 19°. A second belt is used to drive this layshaft by the Lister engine.