I copied this to Ian Castledine who responded thus:
Probably about a 42 inch cylinder. sounds like bed stone had fractured so they
cut it neatly and re joined it... don't forget there is only vertical movement, no
lateral, so as long as cylinder block is clamped down properly it should be ok.
Cheers,
On 16 May 2017 at 20:46, margaret and michael shaw wrote:
> 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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David Kitching
http://www.brocross.com
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