De Hantumermolen is a smock mill in Hantum

Hantum

Hantum is a small village in Dongeradeel in the province Friesland of the Netherlands and has around the 367 citizens . There is a restored windmill, De Hantumermolen....

, 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 was built in 1880. The mill has been restored to working order. It 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 38619.

History

De Hantumermolen was built in 1880 by millwright

Millwright

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...

 G R van Wierum of Janum. It was built for a group of five owners with the purpose of draining the 100 hectares (247.1 acre) Huntumerleeg. Circa 1932, the mill was fitted with four Patent sails. The mill was working until 1957 when a stock broke. The mill was then replaced by a pumping station powered 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...

. Restorations were undertaken in 1978 and 1994. The Patent sails were replaced with Common sails when the mill was restored in 1978. A further restoration was undertaken in 1998.

Description

De Hantumermolen is what the Dutch describe as an grondzeiler. It is a smock mill on a single storey brick base. The mill is winded by tailpole and winch. The smock and cap are thatched. The sails are Common sails. They have a span of 22 metre. The sails are carried on a casst iron windshaft, which was cast by Prins van Oranje, Den Haag. The windshaft also carries the brake wheel which has 63 cogs. This drives the wallower (32 cogs) at the top of the upright shaft. At the bottom of the upright shaft, the crown wheel, which has 43 cogs drives a gearwheel with 44 cogs on the axle of the Archimedes screw. The axle of the Archimedes screw is 370 millimetre diameter. The screw is 1.61 metre diameter and 4.91 metre long. It is inclined at 20°. Each revolution of the screw lifts 1172 litres (257.8 imp gal) of water.