Linnusmaa Farm Mill, Ojajärvi

A wind-powered mill in Finland.

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This is an extremely small post mill dated 1856. It once had eight sails and a double-tailpole, but these have gone; the sub-structure was completely overgrown with brambles but appeared to be normal. The mill itself was only 18 ft. 9 in. high to the ridge from the ground; the body was 7 ft. 6 in. long by 6 ft. wide and 12 ft. to the ridge. The headwheel on a wooden windshaft had 38 cogs, 4 in. pitch, 2 3/4 in. face, 2 3/4 in. deep; it drove a lantern pinion with eight staves. The centre beam was adjustable. The single pair of stones had a round vat mounted on a plinth, which in turn was mounted on a hurst on the one and only floor. The hopper was slung and there was a trailstick to agitate the shoe. The upright shaft was wood-cased and there was a wood screw and nut for tentering the stones. This was the smallest post mill seen.

Full details

Power source Wind
Mill type Post mill
Mill function
Archive ID 11901
Location Ojajärvi, Jalasjärva, South Bothnia
Country Finland


  • Wailes, Rex, & Auvo Hirsjärvi, "Finnish Mills Part IV: Post Mills", (Transactions of the Newcomen Society, 45, 1972-1973, pp.93-104)


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