On AditNow I have placed a picture I took in the 1980s of the location of a
Lancashire boiler which had been removed exposing the flue down each side.
It is in the Askern Colliery Archive Album.
In North Yorkshire we have the site of Esk Valley ironstone mine which was
excavated 30 years ago and here were two Cornish boilers, side by side. I
get the impression comparing the two that the Cornish sat on a central
narrow brick foundation so that the gases coming out of the firetube curved
to one side (the left at E.V.) ran back to the front of the boiler along one
side then passed beneath the firegrate area to reach the other side then ran
forwards again to the base of the chimney. All the brickwork involved was of
yellow firebrick.
With the Lancashire boiler it appears that the gases from each firetube
turned and ran along the outside of each relevant side of the boiler to join
underneath at the front before returning centrally to the base of the
chimney.
All this is great in theory but in practice there may have been variations;
whether a Cornish of Lancs. boiler may have been used might be determined by
the boiler diameter (larger for Lancs.).
Simon.
---- Original Message -----
From: "Robert Waterhouse" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, January 26, 2012 12:44 PM
Subject: Boiler houses
> Dear List,
>
>
>
> I am currently drawing up survey plans of the boiler house of the Sark
> Silver Mines in the Channel Islands,
>
> constructed in 1836 to house a single boiler and widened in c.1841 to take
> a
> second. The design of boilers
>
> are not known. Although they should in theory be Cornish type, as the
> pumping engine of 1836 was by
>
> Harveys of Hayle, they may have been Lancashires.
>
>
>
> The widened building has brick arched voids or possibly flues of c.40cm
> wide
> by 1m high at ashpit level
>
> which appear to have run around the long sides and flue ends of the
> boilers.
> One of these connects with
>
> the smoke flue of the 1841 alterations. At a higher level, there is a
> revetted stone passage along one
>
> long side and the flue end of the building - it is not certain whether
> this
> was capped or open to air, but
>
> one end of it certainly had a narrow arched entrance, c.40cm wide by 60cm
> high.
>
>
>
> Has anyone had any experience of recording such structures, or can direct
> me
> to published drawings
>
> of recorded examples?
>
>
>
> Robert Waterhouse
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