SW9456 : Parkandillick Cornish engine - the cockpit

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

Parkandillick Cornish engine - the cockpit
Parkandillick Cornish engine - the cockpit
This is the area below the driving position of this 1852 built 50" Cornish beam pump. In the background is one of the cataracts that uses water being forced through an adjustable orifice to time the pauses between strokes. In the centre is the bottom of the plug rod that operates the valves and sets the cataracts between strokes. On the right is a weight box that will operate to open one of the engine's three valves under the influence of gravity.

Cock is an older term for a valve and this is the origin of the modern word cockpit (true or bluff). There are not too many pictures of this area on a Cornish engine to be found.
Creative Commons Licence [Some Rights Reserved]   © Copyright Chris Allen and licensed for reuse under this Creative Commons Licence.
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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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