Hello Damian
At 36 inches diameter and that kind of length I would then to be egg-ended - essentially a long riveted tube with spherical ends, hence the name egg ended.
They are a bit on the long side but they were popular although by the 1870s in the UK the single furnace (Cornish) and double furnace (Lancashire) boilers would have been becoming the boiler of choice for well invested sites.
The egg-ended boiler is an underfired affair - like the haystack and wagon boilers that preceded them. Although becoming obsolete by the end of the 19th century they remained in use here any there well into the 20th century and you can still find them used as water tanks here and there.
Finding one on its original setting with the furnace etc. intact is exceptionally rare. I know of one in Bristol, UK and possibly another in south Wales.
I have seen one or two, dismounted, as far away as Australia.
Paul Stephens
01454-850197
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-----Original Message-----
From: mining-history [mailto:[log in to unmask]] On Behalf Of Roger Gosling
Sent: Wednesday, 20 December, 2017 10:17 AM
Subject: Re: 19th Century Boilers
Hi Damian, I have forwarded your email to Paul Stephens who is Chairman of www.isses.org (take a look). Will let the list know if he is happy to help.
Roger
-----Original Message-----
From: mining-history [mailto:[log in to unmask]] On Behalf Of Damian Nance
Sent: 19 December 2017 21:38
To: [log in to unmask]
Subject: [mining-history] 19th Century Boilers
Do we have an authority on 19th century boilers among us? The 110-inch double-acting beam engine known as "The President", which was built by Cornishman John West for the Lehigh Zinc Company in Pennsylvania in 1876, is described as having 16 boilers, each measuring 36 inches in diameter and 50 feet long. They were built by the firm of I.P. Morris in Philadelphia. I am no expert but I've not encountered boilers like these before. Does anyone know what sort of boiler these might have been and how they functioned?
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