SW9456 : Parkandillick beam engine - St Austell governor

taken 37 years ago, near to Treviscoe, Cornwall, Great Britain

Parkandillick beam engine - St Austell governor
Parkandillick beam engine - St Austell governor
An 1852 built Cornish beam pumping engine at a clay pit. It was moved here in 1912 and stopped work about 1955. It is preserved and can be operated with low pressure compressed air produced by a large fan exhausting into the boiler.

Because Cornish engines are non-rotative and do not have a crank and connecting rod to mechanically constrain the stroke length, they rely on exactly the right amount of steam being admitted that matches the load and keeps the stroke to the correct length. Most engines of this type relied entirely on the engine driver adjusting the governor valve by hand but in the St Austell clay district there was a development of this automatic governor (the engine driver still needed to be close at hand with his wits about him). This detected an increase or decrease in the stroke length and automatically decreased or increased the quantity of steam admitted by adjusting the length of the governor valve rod.

You can forget the mogadon tonight if you've read this far!
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SW9456, 27 images   (more nearby )
Photographer
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Date Taken
Monday, 17 May, 1982   (more nearby)
Submitted
Saturday, 3 December, 2011
Geographical Context
Historic sites and artefacts 
Subject Location
OSGB36: geotagged! SW 9479 5683 [10m precision]
WGS84: 50:22.5291N 4:53.2448W
Camera Location
OSGB36: geotagged! SW 9479 5683
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Other Tags
Cornish Beam Engine  Beam Engine  Machinery  Parkandillick 

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