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8342 29 35_Re: CAGE WINDERS CALLED MAN-ENGINES12_Peter [log in to unmask], 3 Feb 2003 08:54:03 -0000614_iso-8859-1 Andy,
In Cornwall 'man engine' was the term used for a man engine. Until the
introduction of boxes for the specific use of carrying men up and down
shafts (with the exception of 'gigs', used in inclined shafts as at
Botallack), 'cage' was the term used for a winding drum. Man engines were
never common place though, only 7 were ever built in Cornwall and in 1884,
although they were coming out of use, they would have been the only
mechanical means specifically built for miners (Tony Brooks may correct me
here). Miners occasionally made use of kibbles (metal buckets [...]44_3Feb200308:54:[log in to unmask]
8372 39 19_Re: Aerial ropeways13_Tony [log in to unmask], 3 Feb 2003 08:57:15 -0000448_ISO-8859-1 Hi everyone,
Bernard make a good point. For a topic in technical history which
has not been previously researched and written up, it is often quite
hard to get firm facts about who invented/patented what and when.
A case in point was the origins of the wire gauze Davey had
available when working on the safety lamp. We failed completely to
find anything in print about the techniques of manufacture then. [...]42_3Feb200308:57:[log in to unmask]
8412 29 18_Boiler explosions.9_Barry [log in to unmask], 3 Feb 2003 09:12:00 +0000654_us-ascii Alan Vickers asks "when the testing and certification for colliery
steam boilers was introduced." Whilst not being able to answer the
question, i can say that the Coal Mines Act of 1855 required that
'every steam boiler shall be provided with a proper steam gauge, water
gauge and safety valve.' This was repeated in the Act of 1860, and
again, with expanded wording in the Act of 1872... . Thus every
colliery boiler should have been safer from 1855, although not
reliably safe until the introduction of annual boiler inspections,
with associated hydraulic and pressure testing, which was, i believe,
[...]39_3Feb200309:12:[log in to unmask]
8442 29 20_James Sims, Engineer13_Paul [log in to unmask], 3 Feb 2003 11:46:33 -0000421_iso-8859-1 I have recently started assembly on the current edition of Stationary Power
(journal of the International Stationary Steam Engine Society).
The lead article discusses Crofton Pumping Station, the Cornish Influence
and James Sims. The paper describes how Crofton's machinery was altered
during the middle of the Nineteenth Century and how a Sims combined
cylinders engine was installed. [...]51_3Feb200311:46:[log in to unmask]
8472 18 13_mineral names20_Thompson, Woodrow [log in to unmask], 3 Feb 2003 10:34:00 -0500330_- Hello all:
I was looking for information on the origin of mineral names (why so many
end in "ite") and came across the following website which is very
interesting and gives the sources of a great many names:
http://www.peterharben.com/pwhimname.html
Woody Thompson
Maine Geological Survey49_3Feb200310:34:[log in to unmask]
8491 54 15_Aerial ropeways9_Mike [log in to unmask], 3 Feb 2003 15:54:33 -0000343_iso-8859-1 Tony Woolrich wrote that "Bernard makes a good point. For a topic in
technical history which has not been previously researched and written up,
it is often quite hard to get firm facts about who invented/patented what
and when."
I would agree if that were the case for aerial ropeways, b%ð%t |
