Help explain this movement please .
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  1. #1
    Member James A's Avatar
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    Help explain this movement please .

    Hi Guys,

    Could I have some help understanding this movement. Think it was from Longines /Record but l an curios about the winding mechanism. Couldn't find it on Ranfft so any info appreciated.


    Used Record 174 Automatic Watch Movement 17 Jewels for Parts Made for Baylor | eBay


    Regards,

  2. #2
    Zenith Forum Co-moderator
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    Re: Help explain this movement please .

    What's there to explain? It's an almost standard automatic movement with bidirectional winding via click wheels. Only that the click wheels have been sort of "turned inside out" (which is what you can see on top of those gears - it's the click mechanism that pulls the gear in one direction but runs idle in the other).

    Hartmut Richter
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  3. #3
    Member James A's Avatar
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    Re: Help explain this movement please .

    Thanks Hartmut,

    Do you know who first developed this inside out design?

    Regards,

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  5. #4
    Zenith Forum Co-moderator
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    Re: Help explain this movement please .

    It is found in the first ever automatic watch. No, not Harwood's watch - the 1770s pocket watch with rotor winding by Perrelet (on the basis of modern research, some attribute this to Hubertus Sarton). Here's the watch but sorry, you can't see the clicks:

    La Cote des Montres : Enchres Unsigned, Swiss, attributed to Abraham Louis Perrelet, circa 1770. Highly important and almost unique, 18 ct. gold early "rotor" self-winding watch.

    However, since this watch passed out of memory soon after until it was rediscovered in 1947, it is quite possible that the Record movement is a reinvention. I have never seen that feature in other watch movements.

    Hartmut Richter
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