Mervi Manor, Hattula

A wind-powered mill in Finland.

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Mill has single-sided cloth-spread common sails.

There is a covered look-out stage replacing the cap but no sails or tailpole. The mill dates from 1885. It has a tower 33 ft. 6 in. high to the curb, 23 ft. across on the ground floor and 11 ft. 10 in. diameter at the curb which was live with iron rollers. The windshaft is now a sham one, but carries a clasp-arm brake-wheel which drove a lantern wallower; a clasp-arm great spur-wheel is mounted on a 14 in, square upright shaft and drove lantern nuts, thrown out of gear by removing a segment of flange complete with the staves. The gear ratio was 49 : 22 and 50 : 12. There are two granite stones, 3 ft. 8 in. diameter, mounted on law plinths, the casings are octagonal and the meal outlets to the spouts are external and accessible if a cover is removed. The outlets from the hoppers are narrow and rectangular conforming to the knotted rope for positive engagement, and the sack hoist was operated by hand with a wooden Y-wheel and a pulley on the upright shaft just above the ground floor level. The stones were tentered by adjusting wedges between the bridgetrees on the first floor.

Full details

Power source Wind
Mill type Smock mill
Mill function
Archive ID 11825
Location Hattula, Häme
Country Finland


  • Wailes, Rex, & Auvo Hirsjärvi, "Finnish Mills Part II: Mamsel or Smock Mills", (Transactions of the Newcomen Society, 43, 1970-1971, pp.113-128)


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