Mellemolen, formerly known as the Polslootpoldermolen or Spookmolen is a hollow post mill in Akkrum, Friesland, Netherlands which has been restored to working order. The mill is listed as a Rijksmonument, number 35937.
History
De Polslpootpoldermolen was marked on a map of Utingeradeel dated 1849. The mill was then known as the Spookmolen. In 1947 it was decided to replace the mill with an electrically powered pump. Permission was sought to demolish the mill but this was denied, as it was again in 1952. The mill was repaired in 1961 and 1971. On 13 November 1972 the mill was blown down in a storm. It was restored in 1976 at a cost of f80,000. At this time it was owned by the GemeenteBoarnsterhim and stood at Ulbe Twijnstrawel 21, 8491 CD, Akkrum. The mill's condition again deteriorated under the ownership of the Gemeente Boarnsterhim. Concern was expressed about its condition by the Monumentenzorg and De Hollandsche Molen. Stichting Molens de Leeg Midden was formed and took over the mill. Plans were made to rebuild it at a new location. The mill was dismantled in 2003 and rebuilt at its new site. This was completed in June 2004 and the mill was renamed the Mellemolen. The work was carried out by Fabrikaat Hiemstra of Tzummarum.
Description
Mellemolen is what the Dutch call a Spinnekopmolen. It is a small hollow post mill with an octagonal roundhouse. The four Common sails, which have a span of are carried on a wooden windshaft which is about long. The mill had a cast ironwindshaft before the 2004 rebuild. The millwrightreplaced it because he did not like the use of a cast iron windshaft in a Spinnekop. The brake wheel has 35cogs, It drives the wallower at the top of the upright shaft, which is contained within the post of the trestle. At the lower end of the upright shaft, the crown wheel drives the Archimedes' screw via a gearwheel with 33 cogs. The Archimedes' screw is made of wood. It has an axle diameter of and a total diameter of and is inclined at 26°. Each revolution pumps of water.
