This is topic Eugene Bourdon and the Bourdon gauge in forum Railroad News at RAILforum. To visit this topic, use this URL:http://www.railforum.com/cgi-bin/ultimatebb.cgi/topic/6/142.html Posted by Rick A (Member # 197721) on 11-18-2019 12:43 PM :
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
Posted by Rick A (Member # 197721) on 11-23-2019 07:53 PM :
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*." _________________ Steven Harrod Lektor Danmarks Tekniske Universitet Institut for Systemer, Produktion, og Ledelse The patent for the 1859 T.W. Lane gaugehttps://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
Posted by Rick A (Member # 197721) on 11-23-2019 08:27 PM :
More info about Bourdon:https://heatinghelp.com/blog/the-metal-manometer/
Posted by Rick A (Member # 197721) on 11-24-2019 09:16 PM :
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
Posted by Rick A (Member # 197721) on 12-05-2019 01:44 PM :
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
Posted by Rick A (Member # 197721) on 12-13-2019 03:34 PM :
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
Posted by Gilbert B Norman (Member # 1541) on 12-14-2019 08:16 AM :
Mr. Ashton, let it be noted that I DO review your informative historical material you share at the site.
Posted by Rick A (Member # 197721) on 12-18-2019 08:42 AM :
Wonderful, I'm glad you are enjoying it!
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