| Koartwâld, Surhuisterveen | |
|---|---|
 Koartwâld, May 2009 | |
 Interactive map of Koartwâld, Surhuisterveen | |
| Origin | |
| Mill name | Koartwâld Feanstermoune |
| Mill location | Koartwâld 6, 9231 HZ Surhuisterveen |
| Coordinates | 53°11′03″N6°10′57″E / 53.18417°N 6.18250°E /53.18417; 6.18250 |
| Operator | Stichting De Feanster Moune |
| Year built | 1864 |
| Information | |
| Purpose | Corn mill |
| Type | Smock mill |
| Storeys | Two storey smock |
| Base storeys | Three storey base |
| Smock sides | Eight sides |
| No. of sails | Four sails |
| Type of sails | Patent sails |
| Windshaft | Cast iron |
| Winding | Tailpole and winch |
| Auxiliary power | Diesel engine, formerlypetrol engine |
| No. of pairs of millstones | Two pairs |
| Size of millstones | 1.40 metres (4 ft 7 in) |
Koartwâld, orFeanstermoune is a smock mill inSurhuisterveen,Friesland,Netherlands, which was built in 1864 and has been restored to working order. The mill is listed as aRijksmonument.
The previous mill near this site was apost mill. A mill stood here in 1664 and one was marked on a map dated 1718, described as arye mill. In 1850, a post mill was built on the opposite side of the road toKoartwâld. It burnt down on 4 August 1864.[1]
Koartwâld was built in 1864 for the Van Schepen family. The mill was sold by K B Kloosterman in 1905. It was bought by Hidzer Sietzema, who refurbished the mill.Patent sails were fitted in 1906. These were later fitted with leading edges on theDekker system. In 1907, apetrol engine was installed to drive the mill when the wind was not blowing. A storm on 24 September 1946 decapitated the mill,[2] damaging the stage, which was then removed.[3]
In 1990, a society was formed with the intention of restoring the mill to working order. The new windshaft came from thePuurveense Molen,Kootwijkerbroek,Gelderland, which had burnt down in 1964.[2] Restoration began in 1991, with the mill officially being opened onNational Mills Day, 1995.[3] The mill is listed as aRijksmonument, No. 511200.[2]
Koartwâld is what the Dutch describe as a "Stellingmolen". It is a smock mill on a brick base. The stage is 6.24 metres (20 ft 6 in) above ground level. The smock and cap arethatched. The mill is winded by tailpole and winch. The sails arePatent sails. They have a span of 18.70 metres (61 ft 4 in). The sails are carried on a cast-ironwindshaft, which was cast by the IJzergieterij De Prins van Oranje,The Hague,South Holland in 1889. Thewindshaft also carries thebrake wheel, which has 54 cogs. This drives thewallower (29 cogs) at the top of theupright shaft. At the bottom of theupright shaft is thegreat spur wheel, which has 74 cogs.[3] Thegreat spur wheel drives a pair of Cullenmillstones and a pair of Peak millstones vialantern pinion stone nuts which have 22 staves each.[2] Both pairs of millstones are 1.40 metres (4 ft 7 in) diameter.[3] Auxiliary power is a single-cylindertwo-stroke 50 horsepower (37 kW)Brons diesel engine dating from 1933. There is also a three-cylinderMcLaren diesel engine dating from 1943.[4]
Koartwâld is open to the public on Saturdays between 09:00 and 12:00, or by appointment.[5]
