2010

TG3802 : Hardley Windpump - Fantail Mechanism

taken 14 years ago, near to Hardley Street, Norfolk, England

Hardley Windpump - Fantail Mechanism
Hardley Windpump - Fantail Mechanism
This is a view of the mechanism that moves the cap and sails into the wind.
The fantail TG3802 : The Cap and Fantail, TG3802 : Hardey Windpump - Fantail via cogs and bars (TG3802 : Hardley Windpump - Fantail Mechanism) turns the horizontal bar centre photograph. This turns the screw mechanism TG3802 : Hardley Windpump - The Turning Mechanism, it moves along the toothed iron circumference rail. The ratio is 1000-1 so the fantail has to wind many times to move the cap. The other mechanism is the shutter angle control. The shutters are connected to the iron in the centre of the sails (called the spider) TG3802 : Hardley Windpump, TG3802 : Hardley Windpump this connects to the striking rod that runs through the wind shaft and out to the back (seen at right angles to the screw). When a gust of wind blows through it forces the shutters open fully, via the front the striking rod is pushed outwards. The cog is turned and thus the wheel and chain. The chain, which usually has a weight on the end TL9369 : Pakenham Towermill is lifted upwards. When the gust has passed the weight falls under gravity pulling the shutters to their original position. It's like flying a kite, when a gust lifts you into the air (almost), then when it has gone you fall back onto your feet.
Hardley Windpump

Hardley windmill is a drainage windpump operating as a museum beside the River Yare. Once part of a pumping complex, there was another mill not too far away, along with a steam pumping station. Oddly the windmill replaced the steam engine. The windpump powered by an Appold turbine Link capable of rising 12 tons of water per minute via a 12 ft high vertical shaft of 5 ft in diameter Link. Built in 1874 for Sir Thomas Proctor Beauchamp (owner of Langley Hall) Link by the Ludham millwright Dan England. During construction a lean developed. The brickwork angle changed near the top to compensate for this. It operated until about 1950 when it was tailwinded* abandoned and replaced by an electrical drainage pump.
It is now open at weekends with a visitor centre. Link.

*When a mill is tailwinded it means that a sudden and violent change of wind direction has blown the sails off. The fantail can only take the sails in one direction.


Creative Commons Licence [Some Rights Reserved]   © Copyright Ashley Dace and licensed for reuse under this Creative Commons Licence.
Category: Windpump
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TG3802, 160 images   (more nearby 🔍)
Photographer
Ashley Dace   (more nearby)
Date Taken
Saturday, 28 August, 2010   (more nearby)
Submitted
Sunday, 29 August, 2010
Subject Location
OSGB36: geotagged! TG 387 024 [100m precision]
WGS84: 52:34.0304N 1:31.2894E
Camera Location
OSGB36: geotagged! TG 387 024
View Direction
West-northwest (about 292 degrees)
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Image classification(about): Supplemental image
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