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Bourdon Gauge

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  • #179987
    Neil Wyatt
    Moderator
      @neilwyatt

      Brilliant. Thanks Steve – I suspect an 1865 magazine is out of copyright!

      As it was patented in 1849 and the patent expired in 1875, and the two stamps are apparently genuine I think I can safely assume it is (a) of Bourdon's own manufacture and (b) it probably dates for the 1860s.

      Neil

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      #180010
      Francois Meunier
      Participant
        @francoismeunier96697

        the original patent by Eugène Bourdon for its" tube" and application can be found on the INPI site, base brevets du 19ème siècle.

        this a manuscript, hardly readable : 33p of finely hand written text with a few figures, looking really odd.

        you can read only, no downloading, but you can order a copy. pretty deceptive!

        hope lhe link works ,

        http://bases-brevets19e.inpi.fr/Thot/FrmLotDocFrame.asp

        #180020
        Neil Wyatt
        Moderator
          @neilwyatt

          Thanks Gedeon,

          My french isn't too appalling, but I can't find their 'cherche' box anywhere!

          Ah, I need to "acceder aux service"

          Blimey his "pompe alimentaire perfectionnée" of 1937 sounds a bit nasty!

          This is the document (you may need to accede to see it): bases-brevets19e.inpi.fr/Thot/FrmLotDocFrame.asp unfortunately my french is only able to pick out odd words from lightly pixelated 19th century handwriting!

          Google has the 1852 US patent which is a bit more readable (auto-OCR'd so full of spelling errors!) It confirms he knew it would work for vacuum as well as pressure from the start.

          It's interesting that he thought of using it for a governor.

          Neil

          #180061
          Ian S C
          Participant
            @iansc

            Steve, if you look up "English Mechanic" vol VII no 180 Friday September 4 1868, you will find Bourdon's improved steam or air engine. Picture on the cover page, article on page 511. Bourdon's engine used a flyball governor.

            Ian S C

            #204168
            Neil Wyatt
            Moderator
              @neilwyatt

              Just to bookend this thread, Stub has put a little write up on his website.

              Neil

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