De Hiemerter Mole, Burgwerd
Encyclopedia
De Heimerter Mole is a hollow post mill in Burgwerd
, Friesland
, Netherlands
which has been restored to working order. The mill is listed as a Rijksmonument
, number 39348.
In 1950, the sails were fitted with streamlined leading edges on the Fok system. In 1957, a diesel engine was installed as auxiliary power and the wooden Archimedes screw replaced by one of steel
. In 1969, the mill ceased work. The diesel engine was removed in the mid-1970s and an automatic pumping station built. In 1973, the mill was bought by De Hollandsche Molen
. In 1976, the mill was restored to working order. On 16 May 1988, the mill was sold to Stichting Fryske Mole (English:Frisian Mills Society).
. At the bottom of the upright shaft, the crown wheel (31 cogs) drives the Archimedes screw via a gear wheel with 29 pegs. The Archimedes screw has an axle diameter of 407 millimetres (16 in) and is 950 millimetre diameter overall. Its length is 3.95 metre. It is inclined at an angle of 28°. Each revolution of the screw lifts 221 litres (48.6 imp gal) of water.
Burgwerd
Burgwerd is a small village in Wûnseradiel in the province Friesland of the Netherlands and has around 344 citizens . It is located near the Boalserter Trekfeart- 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 has been restored to working order. The mill 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 39348.
History
In 1811, the mill was built to drain the Heimerter Polder, which had an area of 385 pondemaat. The mill was then owned by the church at SchalsumSchalsum
Schalsum is a small village in Franekeradeel in the province Friesland of the Netherlands and has around the 120 citizens ....
In 1950, the sails were fitted with streamlined leading edges on the Fok system. In 1957, a diesel engine was installed as auxiliary power and the wooden Archimedes screw replaced by one of steel
Steel
Steel is an alloy that consists mostly of iron and has a carbon content between 0.2% and 2.1% by weight, depending on the grade. Carbon is the most common alloying material for iron, but various other alloying elements are used, such as manganese, chromium, vanadium, and tungsten...
. In 1969, the mill ceased work. The diesel engine was removed in the mid-1970s and an automatic pumping station built. In 1973, the mill was bought by De Hollandsche Molen
De Hollandsche Molen
Vereniging De Hollandsche Molen is a Dutch organization founded in 1923 to preserve windmills in the Netherlands, to document them, and to restore them. Financial support comes from members and from grants by organizations such as the BankGiro Loterij...
. In 1976, the mill was restored to working order. On 16 May 1988, the mill was sold to Stichting Fryske Mole (English:Frisian Mills Society).
Description
De Heimerter Mole is what the Dutch describe as a "spinnenkopmolen" (English: Spider mill). It is a small hollow post mill winded by a winch. The four Common sails, which have a span of 12 metre, are carried in a wooden windshaft. The windshaft also carries the brake wheel which has 29 cogs. This drives the wallower (16 cogs) at the top of the upright shaft, which passed through the main postTrestle (mill)
The Trestle of a Post mill is the arrangement of the Main post, crosstrees and quarterbars that form the substructure of this type of windmill. It may or may not be surrounded by a roundhouse...
. At the bottom of the upright shaft, the crown wheel (31 cogs) drives the Archimedes screw via a gear wheel with 29 pegs. The Archimedes screw has an axle diameter of 407 millimetres (16 in) and is 950 millimetre diameter overall. Its length is 3.95 metre. It is inclined at an angle of 28°. Each revolution of the screw lifts 221 litres (48.6 imp gal) of water.