Heechheim is a Hollow Post mill in Goëngahuizen

Goëngahuizen

Goëngahuizen is a small village in Smallingerland in the province Friesland of the Netherlands and has around the 70 citizens .-Windmills:There are three windmills in Goëngahuizen, De Jansmolen, De Modderige Bol and Heechheim....

, 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 33999.

History

The date that Heechheim was built is unknown, but it is thought to date from the C18th. The earliest date that the mill is known to have been standing is 1820.
The mill was marked on a map of Smallingerland

Smallingerland

Smallingerland is a municipality in the province of Friesland in the Netherlands.-Population centres:Boornbergum, De Tike, De Veenhoop, De Wilgen, Drachten , Drachtstercompagnie, Goëngahuizen, Houtigehage, Kortehemmen, Nijega, Opeinde, Oudega, Rottevalle and Smalle Ee.-History:The name...

 dated 1848. The mill drained the polder De Boer. The mill was restored in 1954, 1970 and 1977. On 9 November 1978, the mill was sold to Stichting de Fryske Mole (Frisian Mills Society). The mill was restored again in 1995. It is maintained in full working order and held in reserve should it be required for drainage purposes.

Description

Heechheim is what the Dutch describe as an spinnenkop. It is a hollow post mill on a single storey square roundhouse. The mill is winded by tailpole and winch. The roundhouse is clad in pantiles and mill body is covered in vertical boards, while the roof of the mill is boarded horizontally and covered in felt. The sails are Common sails. They have a span of 14 metre. The sails are carried on a wooden windshaft. The windshaft also carries the brake wheel which has 41 cogs. This drives the wallower (23 cogs) at the top of the upright shaft. At the bottom of the upright shaft, the crown wheel, which has 33 cogs drives a gearwheel with 29 cogs on the axle of the Archimedes screw. The axle of the Archimedes screw is 280 millimetre diameter. The screw is 920 millimetre diameter and 5.45 metre long. It is inclined at 15½°. Each revolution of the screw lifts 296 litres (65.1 imp gal) of water.