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  1. #1
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    Default Dating an Unmarked JUF

    Picked-up a couple of Std porcelain Classic Floral JUFs with pie crust rings. One is a real Franken-clock that has a bunch of newer parts from various decades. (two of the pendulum balls were actually filled with old watch crowns). The other clock is one I'm having trouble dating:


    • It's your standard JUF pinned plate design with holes for a guard
    • It has no text or numbers, at all, on the posterior of the back plate.
    • Both plates do have a "28" stamped on their inner sides.
    • The pendulum has an oval knop/coda as opposed to the later spike.
    • The base appears correct and has a detail I've not seen on any other clocks. As well as the channel for the dome, there is another one a bit further down the slope that impinges horizontally instead of vertically.


    Where the typical JUF base profile is Like:
    Code:
    
    _   _                       _   _
     |_| \                       |_| \
          \     This one is:          >
           \                         |__
            \                           \


    When might this clock have been built?
    Last edited by MartinM; 03-02-2012 at 03:42 PM.

  2. #2
    Principal Administrator John Hubby's Avatar
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    Default Re: Dating an Unmarked JUF (RE: MartinM)

    Martin, there are three possibilities for unmarked JUF back plates:

    1) Plates "without" the holes for suspension guard mounting were made before 1904.

    2) Plates "with" the holes for suspension guard mounting were made in the majority in the 1930's.

    3) Some plates, both without or with the suspension guard mounting holes, were made across the years 1904 to early 1930's. These many times can be dated by seeing the case designs and other features such as finials, pendulums, upper suspension brackets, dials, etc.

    I think I know what you are referring to with the base design, however it would really help to see photos of the base as well as the complete clock.

  3. #3
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    Default Re: Dating an Unmarked JUF (RE: MartinM)

    Hi Martin,

    Is this what you're refering to?

    This is from a JUF with the circlular stamp, but I have another with the same profile base with the double elephant mark.

    Eric
    Attached Thumbnails Attached Thumbnails P3022785.jpg  

  4. #4
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    Default Re: Dating an Unmarked JUF (RE: etmb61)

    Posting pics of both clocks ("JUF_A" and "JUF_B")

    On the first one, The base is as Eric surmised. (Though it seems to be a deeper groove.).
    Click image for larger version. 

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    Both clocks have the thinner pediment plate.
    Click image for larger version. 

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    Just trying to get the correct date for the first one as it's not exactly represented in the guide.
    Click image for larger version. 

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    On the 2nd (B) clock, I'd appreciate any info on what would be appropriate pieces where they are wrong.
    The Pendulum and base, for sure.
    I already replaced the wrong columns and capitals with what I believe are the correct ones.
    Click image for larger version. 

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    Note the treatment somebody gave to the levelers in the later base. I'd like to put it down; but, cant, as it works so damn well.
    Click image for larger version. 

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    Speaking of wholly inappropriate things to do with these, I also included a couple pics of the Badische Lunar I couldn't find a pendulum for. As it keeps time to a minute in 2 weeks, I guess it's not any worse than the one that came with the clock, originally.
    Click image for larger version. 

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    Some day, I'm going to get around to replacing the temporary timing adjuster with a pair of blocks ground to a triangle shape.
    Click image for larger version. 

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    Last edited by MartinM; 03-03-2012 at 01:59 AM.

  5. #5
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    Default Re: Dating an Unmarked JUF (RE: MartinM)

    Hi Martin I posted an unmarked JUF a few days back.

    http://mb.nawcc.org/showthread.php?8...pendulum-clock


    Shayne

  6. #6
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    Default Re: Dating an Unmarked JUF (RE: Shayne)

    Quote Originally Posted by Shayne View Post
    Hi Martin I posted an unmarked JUF a few days back.

    http://mb.nawcc.org/showthread.php?8...pendulum-clock


    Shayne
    Thanks, Shayne. I didn't make the connection. It's like when you never notice a certain type of car till you own one.

    Looks like the base I need is sorted.

    Is the #39 pendulum the only 4-ball model that is correct for this clock?
    If it is, I'll have to supplement with a spare KoMa #45 for now.

  7. #7
    Principal Administrator John Hubby's Avatar
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    Default Re: Dating an Unmarked JUF (RE: MartinM)

    Martin and Eric, thanks for posting the photos. Also Shayne thanks for the link to your clock.

    Martin, your first clock appears to be all original including the different base from "normal". As Eric mentions, this base design first appears in the 1920's as best I can determine and continued to be used through the 1930's. After WWII it seems JUF used only their "original" design, adding leveling feet in the early 1950's.

    The JUF 4-ball pendulum No. 39 was the "standard" 4-Ball used by JUF from 1911 through 1939 and into the early post-WWII period. They introduced other designs including No. 94, 95, and 96 from 1950. They also used a 3-Ball version of No. 39 from its introduction in 1913 at least to the late 1920's, and the "inverted" 4-Ball No. 27 from its introduction in 1924 on out into the 1930's.

    Your second clock was made between second half 1923 and first quarter 1927, based on the presence of the circular JUF logo and the double elephant logo on the plate. This clock could have had pendulum No. 39 either 3-Ball or 4-Ball, or more likely pendulum No. 27. The base is not correct as you have already concluded, otherwise the clock appears to be original.

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