Fast GF clock

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  • #48548
    estanek70
    Participant
    • Topics Started: 14
    • Total Posts: 32

    I am working on a German made grandfather clock movement that I was asked to fix because it is gaining about ten minutes an hour. The pendulum appears to be OK and is installed correctly. The escape wheel is different from anything I have seen so far. It has very shallow teeth and the space between them contains a smaller tooth. I tried taking a picture of the wheel but I cannot get my camera to focus close enough to the wheel to see the teeth clearly. I would appreciate any help anyone can provide.

    #53258
    willofiam
    Moderator
    • Topics Started: 75
    • Total Posts: 1437

    howdy, check out this previous post (Hermle 451) is this the type of escapement you are dealing with?? are there any markings on the movement?? William

    #53259
    david pierce
    Participant
    • Topics Started: 90
    • Total Posts: 1360

    Estanek,
    Observe the excape wheel while it is running to see if any teeth are being skipped over. It is possible that just one worn tooth could account for the timing problem.
    david

    #53260
    arutha
    Participant
    • Topics Started: 85
    • Total Posts: 1536

    The reason for the clock gaining so much time is more than likley down to the escapement. Check that the pallets are not skipping over the escape wheel as it is a good possibility the depthing is wrong.
    William is the expert on thses clock movements! :)
    Paul.

    #53261
    estanek70
    Participant
    • Topics Started: 14
    • Total Posts: 32

    thanks for responding. I checked the thread you referenced and that is not the escape wheel I am facing. The one I am working on has much shorter teeth making getting the depth correct very difficult. There are numbers on the back of the movement but no names. It does not appear to be a Hermle as those serial numbers are normaly two sets of three seperated by a hyphon.

    #53262
    estanek70
    Participant
    • Topics Started: 14
    • Total Posts: 32

    AS I mentioned above, the teeth on the escape wheel are very shallow. I have tried adjusting the depth and there is a very small difference between stopping the movement and keeping the wheel from skipping teeth. I have inspected the wheel under magnification and I cannot see any excessive wear or worn teeth. I was able to see (and hear) the wheel skipping last night. I marked the spot on the wheel and will be working on it again this AM. Thanks again for your help.

    #53263
    willofiam
    Moderator
    • Topics Started: 75
    • Total Posts: 1437

    Hey estanek70, It is really hard to say without knowing what you have, Paul has in a previous thread explained how to post pictures, hopefully you can. in the least we can try and figure out the type of movement you have which would be helpful, Have fun, William

    #53264
    estanek70
    Participant
    • Topics Started: 14
    • Total Posts: 32

    I hope this picture helps.

    #53265
    willofiam
    Moderator
    • Topics Started: 75
    • Total Posts: 1437

    sorry to say but it looks like you have bad teeth :( , not you but the escape wheel, several are bent and it looks like at least one broken, that would explain your difficulties, William

    #53266
    arutha
    Participant
    • Topics Started: 85
    • Total Posts: 1536

    I am not familiar with that movement but i see what you mean about the depth of the teeth! If those little points are the teeth then there isnt any suprise that it is skipping. Some of them are quite bent and from what i can tell there is wear in the teeth. I think you will have quite a problem getting it to run properly. If you cant find a replacement you need to look at getting another escape wheel cut. If neither of these are possible i can only suggest trying to straighten out the bent teeth as Bob shows in his video.
    Good luck and please let us kow how it goes.
    paul.

    #53267
    estanek70
    Participant
    • Topics Started: 14
    • Total Posts: 32

    Thanks, that was a really quick response. Do you have any idea what make the movement can be? The back plate simply says made in Germany and has the following numbers. UW32062B and underneath that number is 1019704. Any suggestions would really be appreciated.

    Ed

    #53268
    Bob Tascione
    Moderator
    • Topics Started: 38
    • Total Posts: 1559

    Hi Ed,
    That’s an Urgos movement and I think you can get a new wheel at Ronells. Let me check and I’ll get right back with you.

    Bob

    edit:
    Here’s a link for you.
    http://www.ronellclock.com/Urgos-Escape-Wheel-HP-64.htm

    Enjoy!
    Bob

    #53269
    estanek70
    Participant
    • Topics Started: 14
    • Total Posts: 32

    Hi Bob,

    Thanks again.

    Ed

    #53270
    david pierce
    Participant
    • Topics Started: 90
    • Total Posts: 1360

    @david pierce wrote:

    Estanek,
    Observe the excape wheel while it is running to see if any teeth are being skipped over. It is possible that just one worn tooth could account for the timing problem.
    david

    From the picture it looks like the tooth that is being skipped over is the one in the 300 degree position in your photograph. With a 30 tooth escape wheel that should put the time up about 12 minutes per hour. The entire wheel looks worn out and as the others have stated it looks like it needs to be replaced.
    david

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estanek70Fast GF clock