IBM ibm international clock model 25-7

Discussion in 'Electric Horology' started by james o'mara, Mar 15, 2019.

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  1. james o'mara

    james o'mara Registered User

    Mar 11, 2019
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    004.JPG 002.JPG 003.JPG hi can any one help me I recently bought an Ibm international clock model No 25-7 this my first electric clock. do you just fit a plug and throw the switch or am I missing some parts I am more use to repairing 18th and 19th century long case clock so i am at a bit of a lose with this one .
     
  2. JTD

    JTD Registered User

    Sep 27, 2005
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    Welcome to the board.

    You might find it better to post this enquiry in the Electric Horology section.

    A moderator can move this for you and I am sure they will do so if they consider it desirable.

    JTD
     
  3. leeinv66

    leeinv66 Moderator
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    Mar 31, 2005
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    You are right JTD. I'll move this to the Electric Horology forum.
     
  4. james o'mara

    james o'mara Registered User

    Mar 11, 2019
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    hi can any one help me I recently bought an Ibm international clock model No 25-7 this my first electric clock. do you just fit a plug and throw the switch or am I missing some parts I am more use to repairing 18th and 19th century long case clock so i am at a bit of a lose with this one .

    004.JPG 002.JPG 003.JPG 001.JPG
     
  5. JTD

    JTD Registered User

    Sep 27, 2005
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    Thanks Peter - but now I see the OP had posted in Electric Horology as well, so we have a double thread! Could you amalgamate them to save confusion?

    Thanks.

    JTD
     
  6. Jim Hartog

    Jim Hartog Registered User
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    Hello James,

    I just found this guy on YouTube via a response to a question I had re an IBM 35-7. He has other videos, too. The link covers yours, I believe. He has a business restoring master clocks.



    Jim
     
  7. leeinv66

    leeinv66 Moderator
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    Done :)
     
  8. JTD

    JTD Registered User

    Sep 27, 2005
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    Good man!

    JTD
     
  9. Edwardo

    Edwardo Registered User

    Jun 18, 2006
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    Your clock needs a 24vdc power supply and originally ran with an external control box

    It can be easily converted to run by itself with an small wiring modification

    Can you post a photo of the connections on the top of the clock so I can suggest a solution
     
  10. james o'mara

    james o'mara Registered User

    Mar 11, 2019
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  11. james o'mara

    james o'mara Registered User

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    hi jim
    thanks it was very useful and given me some ideas
     
  12. james o'mara

    james o'mara Registered User

    Mar 11, 2019
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    hi edwardo
    here are some extra photos 007.JPG 008.JPG 009.JPG 006.JPG 005.JPG
     
  13. Edwardo

    Edwardo Registered User

    Jun 18, 2006
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    The wiring should be terminated at the top of the case

    Someone has hacked it

    Try connecting 24vdc to the red and black wires

    Swing the pendulum and every 1 minute a contact on the top left will close and fire the wind magnet

    If this happens all you need to do is wind the clock manually and it should stay wound

    Let me know
     
  14. james o'mara

    james o'mara Registered User

    Mar 11, 2019
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    hi edwardo just to let you know stuck a 24vdc transformer on and yes it will
    now winds the clock but their is a mechanical issue with the movement so
    it's not running yet but I will work it out hopefully. will keep you posted
     

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