Have you checked with the Trevithick Society on this and particularly Ken
Brown? If it was a Watt engine then it does not appear on their list of
engines erected in Cornwall between 1777 and 1801. Barton's "The Cornish
Beam Engine" states that Boulton & Watt erected only one small whim engine
in Cornwall after 1798 and that was at United Mines. Maybe the geography of
the site dictated a peculiar design for the house!
From: mining-history [mailto:[log in to unmask]] On Behalf Of
Sent: 11 April 2010 01:55
To: [log in to unmask]
Subject: Re: Beam Engine House Plans
I was recently asked to interpret a rather unusual engine house ruin at
Herodsfoot near Liskeard in Cornwall. It seems fairly early - ie: late C18
or very early C19 (that's early for Cornwall).
It has an unusual plan with a central door to a pumping shaft, opposed side
doors adjoining the shaft wall, and a long narrow plan. The boiler house
appears to have been small and possibly square (haystack variety?) and
immediately adjoined the stack, which is of cylindrical stone type and is
attached to the end of the house, slightly stepped in from the corner. I'm
wondering about a Watt rotary type, completely enclosed within the house.
I'm aware of such an engine being installed at the Bere Ferrers silvermines
c.1781 which was completely enclosed in its house, but don't know of any
others in Devon/Cornwall, or indeed elsewhere. (I am aware of the Levant
winder of 1840).
Does anyone know when attached cylindrical stacks were first used in
Cornwall, and whether any other houses of this form exist which I can go and
have a look at to compare?
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