Gentlemen
Please remember that there was at least one slow-speed horizontal engine
that might have been involved in this kind of operation although c1906
might be a little late.
The Davey differential engine was popular in mining operations and they
were built in moderately large numbers.
If you wish I can probably find you further data and illustrations.
Paul Stephens
IT Manager
DS Smith Corrugated Bristol
DS Smith Corrugated Bristol
First Avenue, Portbury Way,
Portbury, Bristol, BS20 7XR
Tel: +44 (0) 1275 551023 (Direct)
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-----Original Message-----
From: mining-history [mailto:[log in to unmask]] On Behalf Of
[log in to unmask]
Sent: 31 October 2006 10:29
Subject: Re: Pumping Configuration
Dave, Robert & Tony, thanks for your responses to my query. The
'balance bob' in question is definitely a balance bob (in good
condition, very impressive) with a large steel box as a counterweight
although it is now empty. It was also quite clearly the main driving
beam for the pump rod. Tony has probably hit the nail on the head, the
drive from the horizontally acting engine must have been geared down
somehow to produce a sensible stroke rate via a flat rod. Unfortunately
I'm not familiar enough with the likely layout to be able to interpret
the remaining concrete footings to any sensible degree. I don't think
the 'classic' Cornish beam pumping engine arrangement ever reached North
Queensland (unlike some of the other states) but this configuration
seems to have been used in at least two mines nearby (Girofla and Lady
Jane), both very wet by local standards. Thanks again Gents.
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