Spring Barrel Chart

Discussion in 'Clock Repair' started by Jim_Miller, Jan 15, 2020.

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  1. Jim_Miller

    Jim_Miller Registered User
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    is anyone aware if there is a chart that compares numbered spring barrels with their physical dimensions?
    For example , a # 40 spring barrel is _" diam across the face including the teeth, _"inner barrel diam, _" o/a height.
    I hope I explained it without to much confusion.
    Thanks,
    Jim
     
  2. kinsler33

    kinsler33 Registered User

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    I thought that this numbering system applied only to Hermle barrels, though now that I think about it I'm no longer sure. Mark Butterworth (butterworthclocks.com) would probably know. I do know that some barrel covers with different numbers can be interchanged, which can be quite disturbing when you're re-assembling a clock. I'd be interested to learn more about this.

    Use 'butter' for both login and password on Mr Butterworth's website. You can e-mail him from there, and he's a great guy.
     
  3. Bruce Alexander

    Bruce Alexander Registered User
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    #3 Bruce Alexander, Jan 16, 2020
    Last edited: Jan 16, 2020
    Jim,
    I think that the logon and password are both "butterworth".
    You can also go to Timesavers and do a search on "Hermle". That should bring up an online list of Hermle Spring Barrels that they stock.
    Regards,
    Bruce
     
  4. Willie X

    Willie X Registered User

    Feb 9, 2008
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    This part is readily available, so I wonder why anyone would need the dimensions?
    If you need a specific dimension I'm sure someone on this list can provide it for you. Willie X
     
  5. wow

    wow Registered User
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    Jim, where is this chart? Can you post a copy of it so we can see what you are referring to?
     
  6. Jim_Miller

    Jim_Miller Registered User
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    Let me explain a little better. I’m working on a German movement similar to a Hermle. The movement had no manufacturers name. It merely says “ Foreign “. The barrel on the chime side is in pretty rough shape and I though I might be able to replace it with a Hermle if I could come up with the proper size. What I have is a barrel with 63 teeth, 41.56 mm dia across the teeth, Id is 35 mm at the cap recess, 34.63 mm I’d, 25.71 mm depth. I believe the critical dimensions would be the outer diameter and the depth. I’v included some pictures.

    Will, I don’t have a chart for this, I was originally asking if there was one.
    Jim

    F1A727C1-46EE-489A-A2DC-3E58C0B5F4C2.jpeg 2682B0AB-9606-44DB-86C1-D49086A02E6F.jpeg 6F70E2F0-28A1-427B-B6BF-F1463C68A86F.jpeg BE4A5AB2-4793-4BA6-80B6-8D019124AC6E.jpeg F3ED2843-607E-47D0-9C79-CB20E67BCF45.jpeg A1210E3A-45C0-409F-ADFF-BC1CD9714B23.jpeg
     
  7. Willie X

    Willie X Registered User

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    Yep, that one needs replacing alright. There may be one out there somewhere but it will be a long shot to find a good one that is a match. Your best bet may be to have a new one made. Willie X
     
  8. shutterbug

    shutterbug Moderator
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    Depending on how much room you have, you might be able to reinforce the barrel part and just have the gear made. It looks like two teeth have already been replaced.
     
  9. kinsler33

    kinsler33 Registered User

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    Perhaps those of us who have some of those barrels handy could measure them and post the dimensions. I would do so but I'm currently stuck in a Pittsburgh motel.
     
  10. wow

    wow Registered User
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    Jim, I did not read your first post well. I know of no such chart. I do have a couple of boxes of old barrels. I’ll look through them and let you know.
     
  11. Jim_Miller

    Jim_Miller Registered User
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    Thanks Will, I would appreciate it.
    Jim
     
  12. kinsler33

    kinsler33 Registered User

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    #56 is 45.1mm at tips of teeth and 20.8mm tall
    #52 is 45.1mm at tips of teeth and 20.8mm tall

    (I thought they looked the same. The teeth are identical as well. Perhaps the mainsprings inside are different.

    #55 is 53.24mm in diameter at tooth tips and 25mm tall.

    I haven't counted the teeth, but I will do so if that will help. The teeth on all three barrels are identical in size and shape.

    I'd probably repair the old barrel. It looks like it probably works well enough at present and probably just needs its solder joints re-heated (carefully, for the gear may be soldered to the barrel as well) and everything polished. The bulge won't hurt anything.

    I've run into "Foreign" myself. In that case it was the brand name, I guess, of a mantel clock.
     
  13. Jim_Miller

    Jim_Miller Registered User
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    Mark, thank you for taking the time to furnish that info.
    Jim
     
  14. wow

    wow Registered User
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    Jim, I have only one with that diameter but it has 83 teeth. The depth is the main problem. 25.71 is a very deep barrel. I think you are gonna have to do a re-repair on the one you have. A Hermle 40 is close but too small slightly. Good luck!
     
  15. Jim_Miller

    Jim_Miller Registered User
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    Will, thanks for giving it a try. I’ll have to see which way I should go and then get with the customer.
    Thanks again and thank to all who gave me some thoughts
    Jim
     

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