Terpzigt is a drainage mill in

Marssum Marsum or Marssum is a village in Waadhoeke in the province of Friesland, the Netherlands. It had a population of around 1,052 in January 2017. Before 2018, the village was part of the Menameradiel municipality. Every year a Marsumer of the ye ...

Friesland Friesland (, ; official fry, Fryslân ), historically and traditionally known as Frisia, is a province of the Netherlands located in the country's northern part. It is situated west of Groningen, northwest of Drenthe and Overijssel, north of ...

Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...

. It is the smallest ''spinnenkop'', a type of hollow post windmill. The mill is listed as a Rijksmonument, number 8625.

History

The windmill was built in 1888. Before the merger of several waterboards it drained the polder Tolsma. It was restored to working order in 1981 by millwright Dijkstra from Giekerk though it can no longer drain water from the polder, instead it pumps water round in a circuit. In 2011 the windshaft and stocks were replaced.

Description

''Terpzigt'' is what the Dutch describe as a "spinnenkop" (English: spiderhead mill). It is a small hollow post mill winded by a winch. The four common sails have a span of and are carried on a wooden ''windshaft''. The ''brake wheel'' on the windshaft drives the ''wallower'' at the top of the ''upright shaft'', which passed through the main post. At the bottom of the ''upright shaft'', the ''crown wheel'' drives the

Archimedes' screw The Archimedes screw, also known as the Archimedean screw, hydrodynamic screw, water screw or Egyptian screw, is one of the earliest hydraulic machines. Using Archimedes screws as water pumps (Archimedes screw pump (ASP) or screw pump) dates back ...

. The screw is in diameter and can lift of water per revolution. The body and substructure are weatherboarded.

Public access

The mill is open to the public by appointment.

References

{{Dutch Windmills Windmills in Friesland Hollow post mills in the Netherlands Rijksmonuments in Friesland Windmills completed in 1888 Windpumps in the Netherlands