SW6741 : Taylor's Shaft Cornish beam pumping engine - middle chamber

near to Pool, Cornwall, Great Britain

Taylor's Shaft Cornish beam pumping engine - middle chamber
Taylor's Shaft Cornish beam pumping engine - middle chamber
This vast machine that weighs about 100 tons was built in 1892 in Hayle and installed secondhand in this new engine house by 1924. It worked until 1954 and is now preserved by the National Trust.
This shows the top of the 90" diameter cylinder with its piston rod rising to the beam above. There is a displacement lubricator feeding steam oil to the cylinder - the brass object on the left. Arrayed across the front of the cylinder are three valves in a box called the 'top nozzles'. The nearest is the governor valve, which is a hand worked throttle that controls how much steam passes. Next is the steam valve that actually puts steam on top of the piston to push it down to raise the pump rods at the other end of the beam. This valve is closed part way through the stroke to allow the steam to expand and be used more efficiently. On the right is the equilibrium valve that opens at the end of the downwards stroke to allow steam to pass to the lower side of the piston, so that it ascends under the weight of the pumps. If you want to see this for real, I would recommend Kew Bridge Steam Museum or Crofton Pumping Station.
Creative Commons Licence [Some Rights Reserved]   © Copyright Chris Allen and licensed for reuse under this Creative Commons Licence.
year taken
2012
1:50,000 Modern Day Landranger(TM) Map © Crown Copyright
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1:50,000 Modern Day Landranger(TM) Map © Crown Copyright
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SW6741, 77 images   (more nearby)
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Supplemental image
Date Taken
Thursday, 7 June, 2012   (more nearby)
Submitted
Monday, 11 June, 2012
Geographical Context
Historic sites and artefacts  Quarrying, Mining 
Subject Location
OSGB36: geotagged! SW 6741 4188 [10m precision]
WGS84: 50:13.8639N 5:15.7591W
Photographer Location
OSGB36: geotagged! SW 6741 4188
View Direction
North-northeast (about 22 degrees)
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