The Cornwerdermolen is a smock mill in Cornwerd, Friesland, Netherlands which has been restored to working order. The mill is listed as

Rijksmonument A rijksmonument (, ) is a national heritage site of the Netherlands, listed by the agency Rijksdienst voor het Cultureel Erfgoed (RCE) acting for the Dutch Ministry of Education, Culture and Science. At the end of February 2015, the Netherlands ...

number 39329. (Click on ''Technische gegevens'' to view.)

History

The ''Cornwerdermolen'' was built in 1907 by

millwright A millwright is a craftsperson or skilled tradesperson who installs, dismantles, maintains, repairs, reassembles, and moves machinery in factories, power plants, and construction sites. The term ''millwright'' (also known as ''industrial mecha ...

J H Westra of Franeker. The mill originally drained two

polder A polder () is a low-lying tract of land that forms an artificial hydrological entity, enclosed by embankments known as dikes. The three types of polder are: # Land reclaimed from a body of water, such as a lake or the seabed # Flood plains s ...

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. (Click on ''Geschiedenis'' to view.)

Description

The ''Cornwerdermolen'' is a three-storey smock mill 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 , are carried in a cast-iron ''windshaft'' which was cast by H J Koning, Foxham,

Groningen Groningen (; gos, Grunn or ) is the capital city and main municipality of Groningen province in the Netherlands. The ''capital of the north'', Groningen is the largest place as well as the economic and cultural centre of the northern part of t ...

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 diameter and the Archimedes' screw is diameter. It is long, inclined at 19½°. Each turn of the screw lifts of water.

Public access

The ''Cornwerdermolen'' is open to the public by appointment. (Click on "Informatie" to view.)

References

{{DEFAULTSORT:Cornwerdermolen Windmills in Friesland Windmills completed in 1907 Smock mills in the Netherlands Rijksmonuments in Friesland Súdwest-Fryslân Octagonal buildings in the Netherlands