Bad Adjusting Wheel

Discussion in 'Clock Repair' started by grasshopper, Aug 22, 2016.

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  1. grasshopper

    grasshopper Registered User
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    #1 grasshopper, Aug 22, 2016
    Last edited by a moderator: Dec 31, 2017
    I gave myself a promotion last week and now consider myself a "Semi-newbie" which is an upgrade from my previous "newbie" rank. Anyway here is my issue… I just began working on an F Kroeber movement (its mine). I ran it through the Ultrasonic cleaner for the first time and will begin bushing tomorrow. After cleaning I did an examination of the movement and discovered that the wheel which turns the slow/fast adjusting bar is in pretty bad shape (I don't know the correct names of the slow/fast adjusting bar or the wheel....maybe I shouldn't have given myself that promotion after all). My questions…What can be done about this wheel? Is there anything "I" can do myself (I do own a mini-lathe but have no idea how to cut a wheel).
    Speed Wheel 2.JPG Speed Wheel1.JPG

    Speed Wheel 2.JPG Speed Wheel1.JPG
     
  2. Willie X

    Willie X Registered User

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    I think you have a Seth Thomas movement there. Shouldn't be to hard to find a junk movement with the parts you need.
    An adjustable pendulum is a good way to go. ST sold a lot of clocks that had adjustable pendulum and rate adjustment mechanisms.
    FYI, this part is broken because people, for some unknown reason, try to wind up the rate adjuster.
    Willie X
     
  3. shimmystep

    shimmystep Registered User

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    On your lathe you could turn a piece of brass rod to the correct diameter, drill the correct sized hole through it, part if off and file the teeth out of what you have. A most enjoyable coupla hours filing away on easy to file material.

    Or find a junk movement as willie suggests.
     
  4. shutterbug

    shutterbug Moderator
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  5. emhitch

    emhitch Registered User
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  6. lpbp

    lpbp Registered User
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    Shutterbug: That is for an upper adjuster, not sure if it could be modified to work, as has been mentioned try and find a Seth Thomas. As to why they break, it's caused by people running it to the end of the adjustment, then trying to force it farther.
     
  7. grasshopper

    grasshopper Registered User
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    The clock movement plate is stamped very clearly F Kroeber so I am sure it is a Kroeber... although maybe ST made movements for Kroeber at some time. Since I am a "semi-newbie" with a new lathe I am seriously considering trying to make a wheel as shimmystep suggested, but maybe it is over my head. Rather than using an adjustable pendulum as suggested I am trying to get myself in the habit of keeping as much of the original configuration of the movement as possible. Thanks for all the help....if it wasn't for this forum I would never have continued with this enjoyable rewarding hobby.
     
  8. David S

    David S Registered User
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    Grasshopper why don't you at least try and fix it. I would attempt this in a heart beat, even if it took a couple of attempts to get it right.

    The gear as it is, is non functional.. You have a lathe, you can make a blank and then with a jewelers saw or files or both shape the teeth.

    Once you have the old wheel pressed off you can place it over the blank and trace the good teeth, rotate / index and trace the rest.

    Nothing to loose and good learning for when you simply can't find a donor.

    David
     
  9. shutterbug

    shutterbug Moderator
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    The part I referenced should provide the gear that you need. Easier than making one.
     
  10. David S

    David S Registered User
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    But not as much fun :)

    David
     
  11. shimmystep

    shimmystep Registered User

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    Totally the 'have a go' outlook I am a huge fan of :thumb:
    Just having a go, even if you don't necessarily need to, brings such rich learning experience in this fabulous field.

    Grasshopper, the below small pinion for stop works, I made cutting the blank on the lathe and the rest was files and wet and dry paper. But ya gotta have a the time!

    Finsihed pinion.jpg
     
  12. dad1891

    dad1891 Registered User

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    Filed from a blank...........that looks downright professional.
     
  13. grasshopper

    grasshopper Registered User
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    Thanks all...great advise! I think I am going to try making the wheel first and if I fail buy the wheel as Shutterbug suggested.
     
  14. lpbp

    lpbp Registered User
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    Yes Seth Thomas did make movements for them at one time.
     
  15. shimmystep

    shimmystep Registered User

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    Look forward to seeing it :)
     

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