Chronometry: Another project, John Bliss 3111

Discussion in 'Chronometers' started by Kinpol, Jun 7, 2017.

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  1. Kinpol

    Kinpol Registered User

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    #1 Kinpol, Jun 7, 2017
    Last edited by a moderator: Jun 13, 2017
    Dear colleagues...
    I've just received another difficult case. It is John Bliss marine chronometer with Kullberg movement.
    It came from Odessa and was serviced, or someone tried to service it, improper rather...
    The escape wheel and detent spring are missing, but I think that are typical for Kullberg's movements, also chain and hands...
    And the question... does anybody have these parts for sale, or the Kullberg's movement for parts?
    Perhaps someone has these parts, and could be so kind, and share some pictures of them...
    Best regards Krzysztof
     
  2. Jerry Freedman

    Jerry Freedman Registered User
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    #2 Jerry Freedman, Jun 7, 2017
    Last edited by a moderator: Jun 13, 2017
    I thought you might like to see this. It is a Kullberg balance that is on Negus chronometer. It does not have a reverse fusee.
     
  3. Kinpol

    Kinpol Registered User

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    #3 Kinpol, Jun 7, 2017
    Last edited by a moderator: Jun 13, 2017
    The balance I received with the clock looks different than yours...
    I really don't have any idea what could it be... I found an information that John Bliss & Co used to use Kullberg's movements...
     
  4. Ralph

    Ralph Registered User
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  5. Marco C.

    Marco C. Registered User

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    I am not sure. Indeed Bliss's 1845 patent is for an "H" balance, but the one shown in the picture looks too recent. I think that type of balance came in use in the 1930's or so, and Bliss No. 3111 should be older. I may be wrong of course.
     
  6. Jerry Freedman

    Jerry Freedman Registered User
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    I agree with Marco. The balance on the Bliss chronometer looks like Guillaume's integrated balance.
     
  7. Tom McIntyre

    Tom McIntyre Technical Admin
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  8. Ralph

    Ralph Registered User
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    Marco, you are correct. It is a Guillaume integrated balance with a steel spring. I jumped the gun.

    Ralph

    - - - Updated - - -

    Tom, yes I knew the number was truncated, but the link worked, so let it be. ;)

    Thanks, Ralph
     
  9. Tom McIntyre

    Tom McIntyre Technical Admin
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    It worked to get to the Google patent database which has very poor scans of the images and text and tries to OCR it with mixed success. The USPTO database has very clear high resolution images. That is why I posted that link.
     
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