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RE: [DL] Re: SCUBA



Okay folks - please watch the html formatting - ESPECIALLY when cutting and 
pasting from Microsoft products.

At 05:39 PM 8/19/2001 -0400, you wrote:

>Cousteau and Gagnan did not invent the first working regulator. Let me 
>quote about.com
>
><http://scuba.about.com/gi/dynamic/offsite.htm?site=http%3A%2F%2Fwww.mtsinai.org%2Fpulmonary%2Fbooks%2Fscuba%2Fsectiona.htm>http://scuba..about.com/gi/dynamic/offsite.htm?site=http%3A%2F%2Fwww.mtsinai.org%2Fpulmonary%2Fbooks%2Fscuba%2Fsectiona.htm
>
>1942-43 (scuba). Jacques-Yves Cousteau (a French naval lieutenant) and 
>Emile Gagnan (an engineer for Air Liquide, a Parisian natural gas company) 
>work together to redesign a car regulator that will automatically provide 
>compressed air to a diver on his slightest intake of breath. (Prior to 
>this date, all self-contained apparatus still in use supplied air 
>continuously, or had to be manually turned on and off. For unclear 
>reasons, the 19th century demand regulator of Rouquayrol-Denayrouse had 
>long been abandoned.) Cousteau and Gagnan attach their new demand valve 
>regulator to hoses, a mouthpiece and a pair of compressed air tanks. In 
>January 1943 Cousteau tests the unit in the cold Marne River outside 
>Paris. After a modification (placing the intake and exhaust valves at the 
>same level), they patent the Aqua Lung...
>
>But earlier on the page you will read.
>
>1876 (scuba). An English merchant seaman, Henry A. Fleuss, develops the 
>first workable, self-contained diving rig that uses compressed oxygen 
>(rather than compressed air). In this prototype of closed circuit scuba, 
>which is the forerunner of modern closed circuit scuba units used by 
>military divers, carbon dioxide is absorbed by rope soaked in caustic 
>potash, so that exhaled air can be re-breathed (no bubbles enter the 
>water). Although depths are limited (pure oxygen is toxic below about 25 
>feet of sea water, a fact not known at the time), the apparatus allows for 
>relatively long bottom times, up to three hours. In 1880 Fleuss's 
>apparatus is used by the famous English diver Alexander Lambert to enter a 
>flooded tunnel and seal a hatchway door; the hatchway is 60 feet down and 
>1000 feet back into the tunnel.
>
>
>
>Divernet goes into more detail on Fleuss' rebreather in the following article:
>
> 
><http://www.divernet.com/history/severn999.htm>http://www.divernet.com/history/severn999.htm 
>
>
>
>
>An other regulator was patented in 1927 
><http://www.divernet.com/history/reg699.htm>http://www.divernet.com/history/reg699.htm
>
>
>
>We have on a regulator documented to be available during The Weird West 
>and one another possible available.
>
>So scuba is available off the shelf.
>
>
>
>A month ago I didn t know any of this stuff.
>
>
>
>     -----Original Message-----
>
>     From: owner-deadlands@gamerz.net [mailto:owner-deadlands@gamerz.net] On
>
>     Behalf Of SteveL1979@aol.com
>
>     Sent: Sunday, August 19, 2001 3:46 PM
>
>     To: deadlands@gamerz.net
>
>     Subject: Re: [DL] Re: SCUBA
>
>
>
>     In a message dated 8/19/2001 3:32:10 PM Eastern Daylight Time,
>
>     pellinoire@yahoo.com writes:
>
>
>
>     << SCUBA is relativly modern, it was invented, I believe,
>
>      by Cuostu (the famous French diver, recently deceased)
>
>      and another Frenchman about the time of WW II.
>
>      Hard hat diving is much older - it might already be
>
>      around by 1877! Certainly they had been experimenting
>
>      for a long time. Diving bells were already old
>
>      technology (though still far from safe). >>
>
>
>
>         According to THE TIMETABLES OF TECHNOLOGY:
>
>         Cousteau and Emile Gagnan invented the aqualung in 1943.
>
>         The first known use of a diving bell, or similar apparatus, was by
>
>     the
>
>     Italians in 1535, who used a glass diving bell to explore sunken ships
>
>     in
>
>     Lake Nemi. In 1719, Edmond Halley invented a diving bell with a system
>
>     of
>
>     refreshing air, allowing for extended dives. However, the invention of
>
>     the
>
>     modern diving bell is credited to Charles Coulomb in 1756.
>
>         Of greatest relevance to DEADLANDS, in 1842, James Eads patented a
>
>     new
>
>     type of diving bell. He used it for extensive salvage operations in the
>
>     Mississippi River.
>
>         So, as of 1877, diving bells are not only well within the realm of
>
>     mad
>
>     science, but of ordinary science. Plenty of scenario ideas available, no
>
>     doubt!
>
>
>
>     Steve Long
>
>
>
>
>
>     To unsubscribe, send a message to esquire@gamerz.net with
>
>                         unsubscribe deadlands
>
>     as the BODY of the message.  The SUBJECT is ignored.

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