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» RAILforum » General Forums » Railroad News » Eugene Bourdon and the Bourdon gauge

   
Author Topic: Eugene Bourdon and the Bourdon gauge
Rick A
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Almost every gauge since 1849 has come with a Bourdon tube inside. It's the metal tube that flexes when put under pressure and causes the needle on the face of the gauge to read the pressure. Here's a copy of his original US patent and some information about him.

https://blog.wika.us/products/pressu...bourdon-gauge/

https://bourdonusa.com/products/pressure-gauges

https://upload.wikimedia.org/wikipedia/commons/2/24/Portrait_of_Professor_Eugene_Bourdon.jpg

https://www.smokstak.com/forum/threads/eugene-bordon-and-the-bourdon-tube.191405/#lg=post-1621642&slide=0

https://www.smokstak.com/forum/threads/eugene-bordon-and-the-bourdon-tube.191405/#lg=post-1621642&slide=1


https://www.smokstak.com/forum/threads/eugene-bordon-and-the-bourdon-tube.191405/#lg=post-1621642&slide=2

https://www.smokstak.com/forum/threads/eugene-bordon-and-the-bourdon-tube.191405/#lg=post-1621642&slide=3

Posts: 84 | From: Massachusetts | Registered: Oct 2019  |  IP: Logged | Report this post to a Moderator
Rick A
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geoff1944 wrote:
"Bourdon's original gauge was not practical for cold climates because the two ends of the tube, or "spring," were pointed down. Condensed water would drain out of the end which was connected to the steam line but would collect in the other end and freeze, bursting the tube. This design is called a "single spring" gauge because the tube is considered to be one "spring."

T. W. Lane patented an improvement to the Bourdon gauge in 1859 which solved this problem. Lane oriented the tube so both ends were pointed up instead of down. He then placed the connection to the steam line in the middle of the tube, at the bottom. Condensed water would then run out of both ends of the tube. This is called a double spring gauge because the tubes on either side of the bottom connection are each considered to be a separate spring."


"You could just rotate the gauge 90*."
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The patent for the 1859 T.W. Lane gauge

https://www.smokstak.com/forum/threads/eugene-bordon-and-the-bourdon-tube.191405/#lg=post-1622884&slide=3

https://www.smokstak.com/forum/threads/eugene-bordon-and-the-bourdon-tube.191405/#lg=post-1622884&slide=2

https://www.smokstak.com/forum/threads/eugene-bordon-and-the-bourdon-tube.191405/#lg=post-1622884&slide=1

https://www.smokstak.com/forum/threads/eugene-bordon-and-the-bourdon-tube.191405/#lg=post-1622884&slide=0

https://www.smokstak.com/forum/threads/eugene-bordon-and-the-bourdon-tube.191405/#lg=post-1622884&slide=4

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Rick A
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More info about Bourdon:

https://heatinghelp.com/blog/the-metal-manometer/

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Rick A
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The dead weight tester is the accepted way to check the accuracy of a gauge. Here is an article about the tester.

https://www.instrumentationtoolbox.com/2013/08/how-to-calibrate-pressure-gauge-with.html

has anyone ever used this device?

https://www.smokstak.com/forum/threads/the-ashton-gauge-page.187144/page-3#lg=post-1623192&slide=0

https://www.smokstak.com/forum/threads/the-ashton-gauge-page.187144/page-3#lg=post-1623192&slide=1

https://www.smokstak.com/forum/threads/the-ashton-gauge-page.187144/page-3#lg=post-1623192&slide=2

https://www.smokstak.com/forum/threads/the-ashton-gauge-page.187144/page-3#lg=post-1623192&slide=3

https://www.smokstak.com/forum/threads/the-ashton-gauge-page.187144/page-3#lg=post-1623192&slide=4

https://www.smokstak.com/forum/threads/the-ashton-gauge-page.187144/page-3#lg=post-1623334&slide=0
https://www.smokstak.com/forum/threads/the-ashton-gauge-page.187144/page-3#lg=post-1623334&slide=1

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Rick A
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A nice comparison between the 2 gauges.

https://www.smokstak.com/forum/threads/eugene-bordon-and-the-bourdon-tube.191405/#lg=post-1625855&slide=0

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Rick A
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I love "patent art". It's beautiful, especially the older patents. Here are some old patents courtesy of google patent. Enjoy!

https://patents.google.com/patent/US116669A/en?q=steam&q=gauge&q=patents&oq=steam+gauge++patents&page=1

https://patents.google.com/patent/US119454A/en?q=Ashton&q=steam&q=gauge&q=patents&oq=Ashton+steam+gauge++patents

https://patents.google.com/patent/US2040681A/en?q=Ashton&q=steam&q=gauge&q=patents&oq=Ashton+steam+gauge++patents&page=1

https://patents.google.com/patent/US1976938A/en?q=Ashton&q=steam&q=gauge&q=patents&oq=Ashton+steam+gauge++patents&page=2

https://patents.google.com/patent/US1621738A/en?q=Ashton&q=steam&q=gauge&q=patents&oq=Ashton+steam+gauge++patents&page=3

https://patents.google.com/patent/US1639965A/en?q=Ashton&q=steam&q=gauge&q=patents&oq=Ashton+steam+gauge++patents&page=4

And the link to all the pages.
https://patents.google.com/?q=steam&q=gauge&q=patents&oq=+steam+gauge++patents

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Gilbert B Norman
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Mr. Ashton, let it be noted that I DO review your informative historical material you share at the site.
Posts: 9393 | From: Clarendon Hills, IL USA (BNSF Chicago Sub MP 18.71) | Registered: Apr 2002  |  IP: Logged | Report this post to a Moderator
Rick A
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Wonderful, I'm glad you are enjoying it!
Posts: 84 | From: Massachusetts | Registered: Oct 2019  |  IP: Logged | Report this post to a Moderator
   

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