I have been involved with a ruined pumping engine house which retains its
cylinder bed and wonder whether it is possible to know diameter of the
cylinder from the spacing of the bolts. The building does not predate the
early 1780s and was certainly out of use by the 1860s, possibly earlier.
The bed and loading are probably not from the first engine housed and there
is a pit between the bed and the bob wall which suggests that the last
occupant was a Boulton and Watt or similar engine. The bolts are at 1.1m
centres.
The cylinder bed has been cut approximately in half and rejoined with
wrought iron clamps/dogs set in lead, why would this have been done?
Mike Shaw
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