De Poelen, Dronrijp

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De Poelen, Dronrijp
Dronrijp - molen De Poelen.jpg
De Poelen, December 2008
Mill name De Poelen
De Puollen
Mill location Puoldyk 69a, 9035 VC Dronrijp
Coordinates 53°11′34″N 5°40′13″E / 53.19278°N 5.67028°E / 53.19278; 5.67028Coordinates: 53°11′34″N 5°40′13″E / 53.19278°N 5.67028°E / 53.19278; 5.67028
Operator(s) Stichting Molens in Menaldumadeel
Year built 1850
Purpose Drainage mill
Type Smock mill
Storeys Three-storey smock
Base storeys One-storey base
Smock sides Eight sides
No. of sails Four sails
Type of sails Common sails
Windshaft Cast iron
Winding Tailpole and winch
Type of pump Archimedes' screw

De Poelen or De Puollen is a smock mill in Dronrijp, Friesland, Netherlands which was built in 1850. The mill is listed as a Rijksmonument, number 28612.[1]


De Poelen was built in 1850.[2] It was built to drain the 365 hectares (900 acres) Oosterpolder.[3] During its working life, the mill was fitted with Patent sails which had Dekkerised leading edges. The mill was restored in 1984-85,[2] after years out of use and in decline.[4] De Poelen was officially reopened on 27 April 1985.[2] The mill now only pumps water in a circuit for demonstration purposes.[3]


For an explanation of the various items of machinery, see Mill machinery.

De Poelen is what the Dutch describe as a "grondzeiler" . It is a three-storey smock mill on a single-storey base. There is no stage, the sail reaching almost to the ground. The smock and cap thatched. The mill is winded by tailpole and winch. The sails are Common sails. They have a span of 19.10 metres (62 ft 8 in). The sails are carried on a cast-iron windshaft, which is bored through to take the striking rod for Patent sails. The windshaft also carries the brake wheel which has 58 cogs. This drives the wallower (35 cogs) at the top of the upright shaft. At the bottom of the upright shaft, the crown wheel, which has 53 cogs drives a gearwheel with 38 cogs on the axle of the Archimedes' screw. The axle of the screw is 350 millimetres (1 ft 2 in) diameter and the screw is 1.50 metres (4 ft 11 in) diameter and 4.50 metres (14 ft 9 in) long. The screw is inclined at 20°. Each revolution of the screw lifts 919 litres (202 imp gal) of water.[2]

Public access[edit]

De Poelen is open to the public by appointment.[5]


  1. ^ "Technische gegevens" (in Dutch). De Hollandsche Molen. Retrieved 10 January 2010.  (Click on "Technische gegevens" to view.)
  2. ^ a b c d Stichting De Fryske Mole (1995). Friese Molens (in Dutch). Leeuwarden: Friese Pers Boekerij bv. p. 179. ISBN 90-330-1522-6. 
  3. ^ a b "Geschiedenis" (in Dutch). De Hollandsche Molen. Retrieved 10 January 2010.  (Click on "Geschiedenis" to view.)
  4. ^ "Dronrijp, Friesland" (in Dutch). Molendatabase. Retrieved 10 January 2010. 
  5. ^ "Informatie" (in Dutch). De Hollandsche Molen. Retrieved 10 January 2010.  (Click on "Informatie" to view.)