Improved pendulum suspension for Anniversary Clocks.

Discussion in '400-Day & Atmos' started by DieteR, Apr 20, 2015.

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  1. DieteR

    DieteR Registered User

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    Improved pendulum suspension for Anniversary Clocks.

    I found this interesting article in Allgemeines Journal der Uhrmacherkunst No.16 S. 250th
    I'm interested in whether the suspension shown here was eventually realized.
    I have refrained to translate the article because I would need at least a complete day.

    DieteR
     

    Attached Files:

  2. AndyDWA

    AndyDWA Registered User

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    I assume it's a gimbal?

    I put the scan into Acrobat and did an OCR on it, then ran it through Google's translator. It shows promise but there's a few too many errors in the OCR copy due to the resolution of the scan. The errors wouldn't take too long to fix by hand, but it's after midnight so I'm unable to complete it now. Maybe someone else has the tools to do it.
     
  3. Burkhard Rasch

    Burkhard Rasch Registered User
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    Hi,DieteR,and thank You for sharing this interesting article.As You will probably have noticed the text is incomplete,missing a middle section.It starts with the statement that a relevant progress in the manufacture of year going clocks was lately achieved by the introduction of the gimbaled (Cardanic) attachment of the suspension spring.The actual description of the device pictured is missing.The text continues with the disadvantages of the former non-gimbaled suspensions and mentiones the suspension invented by Hauk pointing out that this Hauk suspension is free only in the direction of back and forth swinging to the back plate while the device introduced now is free to move sideways too.The text ends with the expressed hope that this new invention will meet a need longed for by the public.HTH
    Burkhard
     
  4. John Hubby

    John Hubby Principal Administrator
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    #4 John Hubby, Apr 22, 2015
    Last edited by a moderator: Dec 31, 2017
    I also found the same problem with the article that Burkhard points out, would really be good to see what is missing. Do you know what year this was published? Noticing that it mentions the Hauck gimbal that received DRGM 292522 on 26 October 1906, it had to be later perhaps 1907?

    Also of interest, W. Würth & Co. received DRGM 302860 on 23 February 1907 for their double axis ring gimbal (No. 14 in the Repair Guide), which operates on exactly the same principle as the one in the article. I've not seen anything like the drawings shown so I doubt it was commercialized, however before making further comments it would be good to know the date this article was published.
     
  5. Tinker Dwight

    Tinker Dwight Registered User

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    One has to wonder what problem it was trying to solve.
    A tiny angle sideways on the spring is usually not an issue.
    It is also unlikely that the spring will have enough force
    sideways to even overcome the friction of such a gimbal.
    If the spring has a slight bend near the mount, having
    it free might even make it worse as the spring will then
    want to take an angle.
    Tinker Dwight
     
  6. MartinM

    MartinM Registered User

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    Given the bronze springs of the day and there being no cup to restrict the pendulum, I'd guess they were likely trying to reduce the chances of a broken spring when moving the clock with the dome off and the pendulum still in place.
    Come on... Admit it... You've all done it.
     
  7. Tinker Dwight

    Tinker Dwight Registered User

    Oct 11, 2010
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    I only have three of these together and working and not broken
    a spring yet. Two are newer Kundos with the latch to catch the
    top of the bob so, I guess that isn't a far comparison. I don't
    move them without locking the bob.
    I have an early Schatz that I just remove the bob when moving.
    Tinker Dwight
     
  8. DieteR

    DieteR Registered User

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    #8 DieteR, Apr 23, 2015
    Last edited by a moderator: Dec 31, 2017
    Sorry for sending only the half text !!!
    Here it is complete

    Verbesserte Pendelaufhängung an Jahresuhren.

    In der Uhrmacherei haben schon zahlreiche Verbesserungen
    beachtenswerte Bedeutung erlangt; manche
    sind sogar entscheidend geworden für die grössere
    Verbreitung gewisser Uhrensorten.
    Ein nennenswerter Fortschritt auf dem Gebiet der
    Jahresuhrenfabrikation dürfte durch die Anordnung einer kardanischen
    Pendelaufhängung gemacht worden sein, wie dieselbe
    von der Firma Jahresuhr Schwenningen W. (Würth & Cie.)
    zur Zeit auf den Markt gebracht wird. Es wird durch diese
    verbesserte Pendelaufhängung ein wirksamer Schutz gegen das
    Biegen, bezw. Knicken der Pendelfeder erzielt.
    In Fig. 1, 2, 3 und 4 ist die neue Pendelaufhängung in
    der Gesamtansicht dargestellt. An der hinteren Werkplatine befestigt
    befindet sich eine Trägerbrücke a (Fig. 1), die oben U-förmig
    gestaltet ist und zur beweglichen Aufnahme eines Rahmens b
    dient. Dieser Rahmen ist zwischen den Spitzen von Schrauben
    drehbar, die in Muttergewinde des vorderen und hinteren Lappens
    der Trägerbrücke geführt sind. In gleicher horizontaler Ebene,
    jedoch um 90 Grad hierzu gedreht, befinden sich auch in dem
    Rahmen b beweglich Schrauben c (Fig. 1), zwischen welchen ein
    Kloben d (Fig. 2) drehbar festgelegt werden kann. Dieser
    Kloben ist zur Aufnahme und starren Verbindung der bekannten
    Pendelfederbefestigungsteile e gebohrt, geschlitzt und mit einer
    Klemmschraube/' versehen. Beim Lösen dieser Schraube wird das
    in der Klobenbohrung geführte Halsstück der Federbefestigungsteile
    von der Firma Jahresuhr Schwenningen W. (Würth & Cie.)
    zur Zeit auf den Markt gebracht wird. Es wird durch diese
    verbesserte Pendelaufhängung ein wirksamer Schutz gegen das
    Biegen, bezw. Knicken der Pendelfeder erzielt.
    In Fig. 1, 2, 3 und 4 ist die neue Pendelaufhängung in
    der Gesamtansicht dargestellt. An der hinteren Werkplatine befestigt
    befindet sich eine Trägerbrücke a (Fig. 1), die oben U-förmig
    gestaltet ist und zur beweglichen Aufnahme eines Rahmens b
    dient. Dieser Rahmen ist zwischen den Spitzen von Schrauben
    drehbar, die in Muttergewinde des vorderen und hinteren Lappens
    der Trägerbrücke geführt sind. In gleicher horizontaler Ebene,
    jedoch um 90 Grad hierzu gedreht, befinden sich auch in dem
    Rahmen b beweglich Schrauben c (Fig. 1), zwischen welchen ein
    Kloben d (Fig. 2) drehbar festgelegt werden kann. Dieser
    Kloben ist zur Aufnahme und starren Verbindung der bekannten
    Pendelfederbefestigungsteile e gebohrt, geschlitzt und mit einer
    Klemmschraube/' versehen. Beim Lösen dieser Schraube wird das
    in der Klobenbohrung geführte Halsstück der Federbefestigungsteile

    the article is from
    Allgemeines Journal der Uhrmacherkunst Nr. 16 S. 250

    DieteR
     
  9. KurtinSA

    KurtinSA Registered User
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    #9 KurtinSA, Apr 23, 2015
    Last edited by a moderator: Dec 31, 2017
    From google translate:

    "Improved pendulum suspension of Anniversary Clocks.

    In watchmaking already have numerous improvements gained remarkable significance; some have even become crucial for the wider dissemination of certain types of watches. A significant advance in the field of years Clockmaker likely to have been made by arranging a gimbal suspended mounting, as the same is brought by the company Jahresuhr Schwenningen W. (Würth & Cie.) Currently on the market. It is through this improved pendulum suspension effective protection against bending, BEZW. Achieved buckling of the pendulum spring. In Fig. 1, 2, 3 and 4, the new pendulum suspension is shown in the overall view. Attached to the rear drive board is a girder bridge a (FIG. 1), which is designed above U-shaped and is used for mobile recording a frame b. This frame is rotatable between the tips of screws which are guided in internal thread of the front and rear flap of the carrier bridge. In the same horizontal plane, but rotated 90 degrees to this, are also in the frame b movable bolts c (Fig. 1), between which a clamp d (Fig. 2) can be rotatably fixed. This cock is drilled to accommodate and rigid connection of the known pendulum spring fasteners e, slotted and 'provided with a clamping screw /. When removing this screw guided in the Klobenbohrung neck piece of spring fasteners from the company annual clock Schwenningen W. (Würth & Cie.) Will be put on the market at the moment. It is through this improved pendulum suspension effective protection against bending, BEZW. Achieved buckling of the pendulum spring. In Fig. 1, 2, 3 and 4, the new pendulum suspension is shown in the overall view. Attached to the rear drive board is a girder bridge a (FIG. 1), which is designed above U-shaped and is used for mobile recording a frame b. This frame is rotatable between the tips of screws which are guided in internal thread of the front and rear flap of the carrier bridge. In the same horizontal plane, but rotated 90 degrees to this, are also in the frame b movable bolts c (Fig. 1), between which a clamp d (Fig. 2) can be rotatably fixed. This cock is drilled to accommodate and rigid connection of the known pendulum spring fasteners e, slotted and 'provided with a clamping screw /. When removing this screw is guided in the Klobenbohrung neck piece of spring fasteners.

    General Journal of watchmaking no. 16 p 250"

    Kurt
     
  10. Tinker Dwight

    Tinker Dwight Registered User

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    You guys were right, it was to help protect the spring
    while moving.
    Tinker Dwight
     
  11. John Hubby

    John Hubby Principal Administrator
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    DieteR, thanks for the text of the complete article. What was the publication date of this issue of the AGU?
     
  12. DieteR

    DieteR Registered User

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    Hope this is what You need
    Allgemeines Journal der Uhrmacherkunst
    Jahrgang 1907
    Nr. 16 S. 250

    DieteR
     
  13. John Hubby

    John Hubby Principal Administrator
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    #13 John Hubby, Apr 24, 2015
    Last edited by a moderator: Dec 31, 2017
    DieteR, thanks very much! This date is very pertinent to the comments in the article, being published shortly after W. Würth & Co. had been granted DRGM 302860 on 23 February 1907 for their double axis ring gimbal (No. 14 in the Repair Guide). It appears to me this article is an announcement that their invention had been commercialized and was an excellent solution to the problem of bending the suspension spring when moving the clock. Would you agree?

    What I see from the article is that the drawing illustrates the principle of a biaxial gimbal, perhaps using an early design that didn't get made commercially. The actual design is much more elegant than what is shown in the article, but technically they offer exactly the same result.
     

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