CH339868A - Balance for clockwork movement - Google Patents

Balance for clockwork movement

Info

Publication number
CH339868A
CH339868A CH339868DA CH339868A CH 339868 A CH339868 A CH 339868A CH 339868D A CH339868D A CH 339868DA CH 339868 A CH339868 A CH 339868A
Authority
CH
Switzerland
Prior art keywords
balance
disc
rim
clockwork movement
density
Prior art date
Application number
Other languages
French (fr)
Original Assignee
Roamer Watch Co Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Roamer Watch Co Sa filed Critical Roamer Watch Co Sa
Publication of CH339868A publication Critical patent/CH339868A/en

Links

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04BMECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B17/00Mechanisms for stabilising frequency
    • G04B17/04Oscillators acting by spring tension
    • G04B17/06Oscillators with hairsprings, e.g. balance
    • G04B17/063Balance construction

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Recording Or Reproduction (AREA)

Description

  

   <Desc/Clms Page number 1> 
 Balancier pour mouvement d'horlogerie L'objet de la présente invention est un balancier pour mouvement d'horlogerie. 



  Ce balancier est caractérisé par le fait qu'il comprend un disque plein de densité comprise entre 1 et 5, et une serge de métal de densité comprise entre 5 et 20. 



  Le dessin représente un tel balancier, donné à titre d'exemple. 



  La    fig.   1 en est une vue en coupe axiale ; et la    fig.   2 une vue en plan. 



  Sur l'axe 1 de ce balancier est fixé un disque plein 2, dont le rebord embouti est relevé en 3 à angle droit par    rapport   à son plan. Sur ce rebord ainsi relevé est chassée la serge 4, en métal lourd, c'est-à-dire présentant une densité comprise entre 5 et 20. 



  Quant au disque 2, il sera de préférence en métal léger, par exemple d'une densité comprise entre 1 et 5, voire même non métallique, c'est-à-dire en matière plastique. 



  L'avantage que présente un tel balancier est, non seulement d'augmenter le moment    d'inertie   en raison du poids de la serge, mais encore d'assurer une marche plus régulière et à frottements plus faibles, par le fait qu'en remplaçant les bras habituels par un disque plein, on réduit les remous d'air produits par lesdits bras, et que l'on constate dans une plus large mesure encore avec des balanciers à vis. 



  La fixation de la serge au disque peut, dans le cas où ce    dernier   est métallique, s'effectuer    _aussi   par soudure.



   <Desc / Clms Page number 1>
 Balance for a clockwork movement The object of the present invention is a balance for a clockwork movement.



  This balance is characterized by the fact that it comprises a solid disc with a density of between 1 and 5, and a metal rim with a density of between 5 and 20.



  The drawing represents such a balance, given by way of example.



  Fig. 1 is an axial sectional view thereof; and fig. 2 a plan view.



  On the axis 1 of this balance is fixed a solid disc 2, the stamped edge of which is raised at 3 at right angles to its plane. The rim 4, made of heavy metal, that is to say having a density of between 5 and 20, is driven out on this rim thus raised.



  As for the disc 2, it will preferably be made of light metal, for example with a density of between 1 and 5, or even non-metallic, that is to say of plastic.



  The advantage of such a balance is not only to increase the moment of inertia due to the weight of the rim, but also to ensure a more regular operation and with lower friction, by the fact that by replacing the usual arms by a solid disc, we reduce the eddies of air produced by said arms, and which we see to a greater extent with screw balances.



  The fixing of the rim to the disc can, in the case where the latter is metallic, also be carried out by welding.

 

Claims (1)

REVENDICATION: Balancier pour mouvement d'horlogerie, caractérisé en ce qu'il comprend un disque plein de densité comprise entre 1 et 5, et une serge de métal de densité comprise entre 5 et 20. SOUS-REVENDICATIONS: 1. Balancier selon la revendication, caractérisé en ce que le disque est en métal. 2. Balancier selon la revendication, caractérisé en ce que le disque est en matière plastique. 3. Balancier selon la revendication, caractérisé en ce que le disque est soudé à la serge. 4. Balancier selon la revendication, caractérisé en ce que le disque présente un rebord embouti, relevé perpendiculairement à son plan, et en ce que la serge est chassée sur ce bord. CLAIM: Balance for a clockwork movement, characterized in that it comprises a solid disc with a density of between 1 and 5, and a metal rim with a density of between 5 and 20. SUB-CLAIMS: 1. Balance according to claim , characterized in that the disc is made of metal. 2. Balance according to claim, characterized in that the disc is made of plastic. 3. Balance according to claim, characterized in that the disc is welded to the rim. 4. Balance according to claim, characterized in that the disc has a stamped rim, raised perpendicular to its plane, and in that the rim is driven on this edge.
CH339868D 1957-07-11 1957-07-11 Balance for clockwork movement CH339868A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH339868T 1957-07-11

Publications (1)

Publication Number Publication Date
CH339868A true CH339868A (en) 1959-07-15

Family

ID=4505171

Family Applications (1)

Application Number Title Priority Date Filing Date
CH339868D CH339868A (en) 1957-07-11 1957-07-11 Balance for clockwork movement

Country Status (1)

Country Link
CH (1) CH339868A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676998A (en) * 1967-06-02 1972-07-18 Far Fab Assortiments Reunies Balance for a time piece
DE19651321C2 (en) * 1996-12-11 2002-08-14 Lothar Schmidt balance
DE19651322C2 (en) * 1996-12-11 2002-11-07 Lothar Schmidt oscillating system
WO2008135817A3 (en) * 2007-05-08 2009-04-30 Patek Philippe Sa Timepiece component and method for making same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3676998A (en) * 1967-06-02 1972-07-18 Far Fab Assortiments Reunies Balance for a time piece
DE19651321C2 (en) * 1996-12-11 2002-08-14 Lothar Schmidt balance
DE19651322C2 (en) * 1996-12-11 2002-11-07 Lothar Schmidt oscillating system
WO2008135817A3 (en) * 2007-05-08 2009-04-30 Patek Philippe Sa Timepiece component and method for making same
CN101675392B (en) * 2007-05-08 2013-02-06 百达翡丽日内瓦公司 Timepiece component and method for making same
US8636403B2 (en) 2007-05-08 2014-01-28 Patek Philippe Sa Geneve Timepiece component and method for making same
US9342053B2 (en) 2007-05-08 2016-05-17 Patek Philippe Sa Geneve Method for making a timepiece component

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