US3161012A - Driving balance-wheel for an electrical timepiece - Google Patents

Driving balance-wheel for an electrical timepiece Download PDF

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Publication number
US3161012A
US3161012A US299287A US29928763A US3161012A US 3161012 A US3161012 A US 3161012A US 299287 A US299287 A US 299287A US 29928763 A US29928763 A US 29928763A US 3161012 A US3161012 A US 3161012A
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United States
Prior art keywords
wheel
balance
plates
shape
segment
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Expired - Lifetime
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US299287A
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English (en)
Inventor
Hug Andre
Meister Rene
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Ebauches SA
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Ebauches SA
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
    • G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance

Definitions

  • the present invention pertains to a driving balancewheel for an electrical timepiece.
  • the driving balance-Wheels for electrical time-pieces which comprise a magnetic circuit often provided with two permanent magnets and with elements made of magnetic material, are difficult to be manufactured, due the hardness of the magnetic material, which can be ditlicnlt to work, and due to the relatively high weight of the magnets.
  • An object of the present invention is to provide such a balance-wheel which is constituted and arranged in such a Way that its construction is simple and easy.
  • a balance-wheel according to the invention is characterized by the fact that it comprises two parallel circular plates, made of a non-magnetic material.
  • Each of the plates carries two permanent magnets connected by an armature made of magnetic material, having the shape of a segment of crown, located in an opening of corresponding shape provided in each of the plates.
  • Each magnet of one plate is located in the neighborhood of one of the extremities of one of the armatures, opposite one of the magnets of the other plate. Accordingly the ".edian plane of the magnetic field so created has the shape of a loop directed par allelly to the axis of the balance-wheel and perpendicularly to the diametral plane of symmetry of the latter.
  • FIG. 1 is a plan View of a part of a balance-wheel of a timepiece
  • FIG. 2 is an axial section, along line 11-11 of FIG. 1.
  • the balance-Wheel represented in FIGS. 1 and 2 comprises a shaft 1 on which is mounted a sleeve 2 constituting a brace between two parallel circular plates 3 and 4, made of non-magnetic material.
  • a recess 5 having the shape of an arc of a circle, located in the neighbourhood of their periphery.
  • the two small plates 6 of the circular plates 3 and 4 are located opposite one another.
  • Each circular plate 3 and 4 is provided with two holes provided in its part constituting the bottom of the recess 5.
  • a permanent magnet 7, is forced in each of these holes, its rear axial face being in contact with one of the small plates 6.
  • Each magnet '7 of one of the circular plates 3 and 4 is situated opposite one of the magnets of the other plate.
  • a magnetic circuit having the shape of a loop, the median plane of which, schematically represented by the line 8 in FIG. 1, is parallel to the axis 1 of the balance-wheel and is perpendicular to the diametral plane of symmetry 9 of the balance-wheel.
  • Each of two plates 3 and i carry moreover a counterweight lti having the shape of a segment of crown, serving to balance the weight of the magnet '7 and ot the armature 6.
  • These counterweights are forced into recesses 11 provided in the circular plates 3 and 4.
  • the fine balancing of the balance-Wheel is obtained by boring radial holes 12 in the connterweights 1%.
  • a driving balance-wheel for an electrical timepiece comprising two parallel circular plates of non-magnetic material, a shaft for supporting said plates for rotational motion, a recess having the shape of a segment of a circle in each of said plates adjacent the periphery thereof, an armature plate of magnetic material having the shape of a segment of a circle in each of said recesses, 11 pair of spaced permanent magnets fixed to each of said armatures, the magnets 01' one pair being disposed opposite the magnets of the other pair, said permanent magnets being polarized to establish a magnetic field in the form of a loop passing through said paths of permanent magnets and said armatures wherein the median plane of the magnetic field is parallel to the axis of said balance-wheel and perpendicular to the diametral plane of symmetry of said balance-wheel, and a counterweight in the shape of a segment of a circle fixed to each of said plates near the periphery thereof and diametrically opposite aid recesses.
  • each of said plates includes a second recess and said counterweight is fixed in said second recess.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
US299287A 1962-08-22 1963-08-01 Driving balance-wheel for an electrical timepiece Expired - Lifetime US3161012A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH999062A CH385751A (fr) 1962-08-22 1962-08-22 Balancier moteur pour pièce d'horlogerie électrique

Publications (1)

Publication Number Publication Date
US3161012A true US3161012A (en) 1964-12-15

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ID=4357912

Family Applications (1)

Application Number Title Priority Date Filing Date
US299287A Expired - Lifetime US3161012A (en) 1962-08-22 1963-08-01 Driving balance-wheel for an electrical timepiece

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US (1) US3161012A (xx)
CH (2) CH999062A4 (xx)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3528239A (en) * 1967-10-04 1970-09-15 Messrs Gebruder Junghans Gmbh Balance construction
US3670492A (en) * 1969-05-28 1972-06-20 Citizen Watch Co Ltd Balance wheel assembly
US3765166A (en) * 1971-12-29 1973-10-16 Suwa Seikosha Kk Balance construction for electronic timepieces
US3813872A (en) * 1971-11-26 1974-06-04 Seiko Instr & Electronics Balance wheel assembly for an electric timepiece
WO2006045824A2 (fr) * 2004-10-26 2006-05-04 Tag Heuer Sa Organe reglant pour montre bracelet, et mouvement mecanique comportant un tel organe reglant
US20100054089A1 (en) * 2007-05-08 2010-03-04 Maier Frederic Timepiece component and method for making same
US20110096636A1 (en) * 2009-10-26 2011-04-28 Gilles Pellet Regulating organ comprising at least two balances
US20110103197A1 (en) * 2008-03-20 2011-05-05 Nivarox-Far S.A. One-piece regulating member and method of manufacturing the same
WO2011051497A1 (fr) 2009-11-02 2011-05-05 Lvmh Swiss Manufactures Sa Organe réglant pour montre bracelet, et pièce d'horlogerie comportant un tel organe réglant
US20110103196A1 (en) * 2008-03-20 2011-05-05 Nivarox-Far S.A. Composite balance and method of manufacturing the same
US20130188461A1 (en) * 2010-07-19 2013-07-25 Nivarox-Far S.A. Balance with inertia adjustment using an insert
US10948881B2 (en) * 2017-08-04 2021-03-16 The Swatch Group Research And Development Ltd Timepiece movement fitted with an electromagnetic transducer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT209169B (de) * 1957-03-21 1960-05-25 Buntpapierfabrik A G Verfahren zur Egalisierung von Papieroberflächen
US2986683A (en) * 1956-07-26 1961-05-30 Hatot Leon Ets Driving balance-wheels more particularly applicable to timing instruments
US3056253A (en) * 1960-06-10 1962-10-02 Ebauches Sa Electrically operated oscillatory system for timepieces

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986683A (en) * 1956-07-26 1961-05-30 Hatot Leon Ets Driving balance-wheels more particularly applicable to timing instruments
AT209169B (de) * 1957-03-21 1960-05-25 Buntpapierfabrik A G Verfahren zur Egalisierung von Papieroberflächen
US3056253A (en) * 1960-06-10 1962-10-02 Ebauches Sa Electrically operated oscillatory system for timepieces

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3528239A (en) * 1967-10-04 1970-09-15 Messrs Gebruder Junghans Gmbh Balance construction
US3670492A (en) * 1969-05-28 1972-06-20 Citizen Watch Co Ltd Balance wheel assembly
US3813872A (en) * 1971-11-26 1974-06-04 Seiko Instr & Electronics Balance wheel assembly for an electric timepiece
US3765166A (en) * 1971-12-29 1973-10-16 Suwa Seikosha Kk Balance construction for electronic timepieces
EP2282240A3 (fr) * 2004-10-26 2011-02-23 LVMH Swiss Manufactures SA Organe réglant pour montre bracelet, et mouvement mécanique comportant un tel organe réglant
WO2006045824A2 (fr) * 2004-10-26 2006-05-04 Tag Heuer Sa Organe reglant pour montre bracelet, et mouvement mecanique comportant un tel organe reglant
WO2006045824A3 (fr) * 2004-10-26 2006-08-17 Tag Heuer Sa Organe reglant pour montre bracelet, et mouvement mecanique comportant un tel organe reglant
US7396154B2 (en) 2004-10-26 2008-07-08 Tag Heuer Sa Regulating element for wristwatch and mechanical movement comprising one such regulating element
EP2282240A2 (fr) 2004-10-26 2011-02-09 LVMH Swiss Manufactures SA Organe réglant pour montre bracelet, et mouvement mécanique comportant un tel organe réglant
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
US20100054089A1 (en) * 2007-05-08 2010-03-04 Maier Frederic Timepiece component and method for making same
US8550699B2 (en) * 2008-03-20 2013-10-08 Nivarox-Far S.A. Composite balance and method of manufacturing the same
US20110103197A1 (en) * 2008-03-20 2011-05-05 Nivarox-Far S.A. One-piece regulating member and method of manufacturing the same
US20110103196A1 (en) * 2008-03-20 2011-05-05 Nivarox-Far S.A. Composite balance and method of manufacturing the same
US8523426B2 (en) 2008-03-20 2013-09-03 Nivarox-Far S.A. One-piece regulating member and method of manufacturing the same
US8668378B2 (en) * 2009-10-26 2014-03-11 Societe Anonyme De La Manufacture D'horlogerie Audemars Piguet & Cie Regulating organ comprising at least two balances
US20110096636A1 (en) * 2009-10-26 2011-04-28 Gilles Pellet Regulating organ comprising at least two balances
US8534910B2 (en) 2009-11-02 2013-09-17 Lvmh Swiss Manufactures Sa Regulating member for a wristwatch, and timepiece comprising such a regulating member
WO2011051497A1 (fr) 2009-11-02 2011-05-05 Lvmh Swiss Manufactures Sa Organe réglant pour montre bracelet, et pièce d'horlogerie comportant un tel organe réglant
US20130188461A1 (en) * 2010-07-19 2013-07-25 Nivarox-Far S.A. Balance with inertia adjustment using an insert
KR101457312B1 (ko) 2010-07-19 2014-11-04 니바록스-파 에스.에이. 인서트를 사용한 관성 조절 기능을 가지는 밸런스
US8944675B2 (en) * 2010-07-19 2015-02-03 Nivarox-Far S.A. Balance with inertia adjustment using an insert
US10948881B2 (en) * 2017-08-04 2021-03-16 The Swatch Group Research And Development Ltd Timepiece movement fitted with an electromagnetic transducer

Also Published As

Publication number Publication date
CH999062A4 (xx) 1964-08-31
CH385751A (fr) 1964-08-31

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