De Cornwerdermolen, Cornwerd
Encyclopedia
De Cornwerdermolen is a smock mill in Cornwerd
, Friesland
, Netherlands
which has been restored to working order. The mill is listed as a Rijksmonument
, number 39329.
J H Westra of Franeker
. The mill originally drained two polder
s, each via a separate Archimedes screw. Five windmills were put out of work by the construction of the Cornwerdermolen and were demolished. The smaller of the two screws was later removed. The mill was restored in 1969. it worked until 13 November 1972, when it lost two sails in a storm. Thereafter the work of the mill was done by an Archimedes screw driven by a tractor
. The tractor was later replaced by an electric motor
. The mill was restored in 1999. It is the most westerly windmill in Friesland.
in 1907. The mill in winded by a tailpole and winch. The windshaft also carries the brake wheel which has 59 cogs. This drives the wallower (34 cogs) at the top of the upright shaft. At the bottom of the upright shaft, the crown wheel (103 cogs) drives the Archimedes screw via a gearwheel with 37 cogs. The axle of the Archimedes screw is 715 millimetre diameter and the Archimedes screw is 1.52 metre diameter. It is 4.63 metre long, inclined at 19½°. Each turn of the screw lifts 1147 litres (252.3 imp gal) of water.
Cornwerd
Cornwerd is a small village in Wûnseradiel in the province Friesland of the Netherlands and has around 100 citizens . Cornwerd is the location of the most westerly windmill in Friesland, De Cornwerdermolen....
, 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 39329.
History
De Cornwerdermolen was built in 1907 by millwrightMillwright
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...
J H 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...
. The mill originally drained two polder
Polder
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...
s, each via a separate Archimedes screw. Five windmills were put out of work by the construction of the Cornwerdermolen and were demolished. The smaller of the two screws was later removed. The mill was restored in 1969. it worked until 13 November 1972, when it lost two sails in a storm. Thereafter the work of the mill was done by an Archimedes screw driven by a tractor
Tractor
A tractor is a vehicle specifically designed to deliver a high tractive effort at slow speeds, for the purposes of hauling a trailer or machinery used in agriculture or construction...
. The tractor was later replaced by an electric motor
Electric motor
An electric motor converts electrical energy into mechanical energy.Most electric motors operate through the interaction of magnetic fields and current-carrying conductors to generate force...
. The mill was restored in 1999. It is the most westerly windmill in Friesland.
Description
De Cornwerdermolen is what the Dutch describe as a "grondzeiler" . It is a three storey smock mille on a single storey base. There is no stage, the sails reaching almost to the ground. The mill is winded by tailpole and winch. The four Patent sails, which have a span of 20 metre, are carried in a cast iron windshaft which was cast by H J Koning, Foxham, GroningenGroningen (province)
Groningen [] is the northeasternmost province of the Netherlands. In the east it borders the German state of Niedersachsen , in the south Drenthe, in the west Friesland and in the north the Wadden Sea...
in 1907. The mill in winded by a tailpole and winch. The windshaft also carries the brake wheel which has 59 cogs. This drives the wallower (34 cogs) at the top of the upright shaft. At the bottom of the upright shaft, the crown wheel (103 cogs) drives the Archimedes screw via a gearwheel with 37 cogs. The axle of the Archimedes screw is 715 millimetre diameter and the Archimedes screw is 1.52 metre diameter. It is 4.63 metre long, inclined at 19½°. Each turn of the screw lifts 1147 litres (252.3 imp gal) of water.