Help with movement signature

Discussion in 'General Clock Discussions' started by jzaw, Sep 2, 2019.

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  1. jzaw

    jzaw New Member

    Sep 2, 2019
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    Hi, I'm new to this forum and unsure if I've got the right audience but I need to identify my clock manufacturer. The movement, cased in black marble, is round in shape and time only. The movement is marked with G.B (the is no full stop after the B). Is it Gustav Becker works? There are no other marks on the plates that would help me further identify the manufacturer.
     
  2. JTD

    JTD Registered User

    Sep 27, 2005
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    #2 JTD, Sep 2, 2019
    Last edited: Sep 2, 2019
    Welcome to the board.

    Your movement might be a Gustav Becker, but his marks are usually quite recognisable. On the other hand there were a lot of of makers using the GB mark, and you may well have a French roulant. These were often marked by the finisseur rather then a particular maker.

    It would be really helpful if you could post a photo of what you are looking at, otherwise we can only guess..

    JTD
     
  3. jzaw

    jzaw New Member

    Sep 2, 2019
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    As requested, a picture of the crest is attached. Once again, I'm looking for the manufacturer of this clock. Thanks in advance

    DSC00100.JPG
     
  4. JTD

    JTD Registered User

    Sep 27, 2005
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    I thought you might post a photo of the whole things, but from what little of the movement you have shown us, I think we can safely say it is not by Gustav Becker.

    I suspect you have, as I said above, a French made roulant movement and the GB mark will be that of the finisseur. These are usually impossible to identify, since there was no one maker, the parts were made by all sorts of people and then assembled. But again. a photo of the whole movement, back and front and even of the clock itself might help to clarify things.

    JTD
     
  5. jzaw

    jzaw New Member

    Sep 2, 2019
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    Hi JTD, Thanks for the reply. I thought it was a French movement as the clock has v. characteristic French winding key. Unfortunately, I disassembled the movement to oil and check for operation and can't give you the complete clock picture. I'll do it when it's back together.
    What I found, a v. interesting thing, was the suspension spring mounting (damaged by the way). It has spring/pendulum adjustment but completely useless as, when enclosed, it can't be adjusted. FYI, I attached some pictures of it. May I have your thoughts regarding this one? Thank you and brgds

    DSC00131.JPG DSC00132.JPG DSC00133.JPG DSC00134.JPG
     
  6. JTD

    JTD Registered User

    Sep 27, 2005
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    This is a very common type of suspension adjuster, especially on French clocks. It needs to have the correct type of suspension spring. When it's all assembled, the long shaft is used to raise or lower the suspension (very slightly) by using a tiny key to turn the long shaft (which will be visible with its end just above the 12 on the front of the clock). This is meant for very fine adjustments once you have got the timekeeping more or less correct by adjustments to the pendulum bob.

    Could you please post a photo of the 'v. characteristic French winding key'?

    JTD
     
  7. leeinv66

    leeinv66 Moderator
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    Google Brocot suspension to find information on suspension adjustment block.
     
  8. jzaw

    jzaw New Member

    Sep 2, 2019
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    Thank you for the replays. I managed to decipher the suspension mechanism which had the adjusting screw sized and part of the spring mounting broken off. I also managed to check the clock and oil it. Apart from the suspension spring problem, there are no major issues and the clock is back in one piece. As usually, I have some problems with polishing the marble case which stubbornly stays a bit matt for my liking. I attached the pictures.

    DSC00137.JPG DSC00139.JPG DSC00140.JPG DSC00135.JPG
     
  9. leeinv66

    leeinv66 Moderator
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    Have a read of these threads, they should help. Click Here & HERE
     

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