De Hatsumermolen, Dronryp

De Hatsumermolen, Dronryp
De Hatsumermolen, December 2008
Origin
Mill name	De Hatsumermolen
Mill location	Keimptilsterdyk 2a, 9035 VL Dronryp
Coordinates	53°10′46″N5°37′47″E / 53.17944°N 5.62972°E / 53.17944; 5.62972
Operator(s)	Stichting Molens in Menaldumadeel
Year built	1878
Information
Purpose	Drainage mill
Type	Smock mill
Storeys	Two-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 Hatsumermolen is a smock mill in Dronryp, Friesland, Netherlands which was built in 1878. The mill is listed as a Rijksmonument, number 28615. ^[1]

History

In 1841, a spinnenkopmolen stood on this site. De Hatsumermolen was built in 1878 by millwright N J Osinga. ^[2] It drained the 60 hectares (150 acres) Sikma Polder, which formed part of the Hommema State farmstead. Restoration work on the mill began in 1987 and was completed 1990. The mill was officially opened on 23 October 1991 by Pieter van Vollenhoven. ^[3] Repairs were carried out to the cap in 2003. ^[4]

Description

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

De Hatsumermolen is what the Dutch describe as a "grondzeiler" . It is a two-storey smock mill on a single-storey base. There is no stage, the sail reaching almost to the ground. The smock and cap covered in weatherboards, which are vertical on the smock. The mill is winded by tailpole and winch. The sails are Common sails. They have a span of 11.56 metres (37 ft 11 in). The sails are carried on a cast-iron windshaft which was cast by Gietijzerij Hardinxveld of Giessendam, South Holland. The windshaft also carries the brake wheel which has 31 cogs. This drives the wallower (16 cogs) at the top of the upright shaft. At the bottom of the upright shaft, the crown wheel, which has 32 cogs drives a gearwheel with 29 cogs on the axle of the wooden Archimedes' screw. The axle of the screw is 260 millimetres (10 in) diameter and the screw is 900 millimetres (2 ft 11 in) diameter and 3.75 metres (12 ft 4 in) long. The screw is inclined at 34°. Each revolution of the screw lifts 111 litres (24 imp gal) of water. ^[3]

Public access

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

References

1. "Technische gegevens" (in Dutch). De Hollandsche Molen. Archived from the original on 27 May 2012. Retrieved 18 January 2010. (Click on "Technische gegevens" to view.)
2. "Geschiedenis" (in Dutch). De Hollandsche Molen. Archived from the original on 27 May 2012. Retrieved 10 January 2010. (Click on "Geschiedenis" to view.)
3. Stichting De Fryske Mole (1995). Friese Molens (in Dutch). Leeuwarden: Friese Pers Boekerij bv. p. 178. ISBN   90-330-1522-6.
4. "Dronrijp, Friesland" (in Dutch). Molendatabase. Retrieved 18 January 2010.
5. "Informatie" (in Dutch). De Hollandsche Molen. Archived from the original on 27 May 2012. Retrieved 18 January 2010. (Click on "Informatie" to view.)