US3846974A - Motor-barrel watch movement - Google Patents

Motor-barrel watch movement Download PDF

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Publication number
US3846974A
US3846974A US00416430A US41643073A US3846974A US 3846974 A US3846974 A US 3846974A US 00416430 A US00416430 A US 00416430A US 41643073 A US41643073 A US 41643073A US 3846974 A US3846974 A US 3846974A
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US
United States
Prior art keywords
arbor
barrel
wheel
movement
frame
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
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US00416430A
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English (en)
Inventor
U Giger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ETA AG
Ebauchesfabrik ETA AG
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Ebauchesfabrik ETA AG
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Publication date
Application filed by Ebauchesfabrik ETA AG filed Critical Ebauchesfabrik ETA AG
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Publication of US3846974A publication Critical patent/US3846974A/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/16—Barrels; Arbors; Barrel axles
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B1/00—Driving mechanisms
    • G04B1/10—Driving mechanisms with mainspring
    • G04B1/18—Constructions for connecting the ends of the mainsprings with the barrel or the arbor

Definitions

  • the object of the present invention is to achieve a reduction in manufacturing costs of motorbarrel watch-movements by simplifying the barrel arbor and the motor assembly.
  • the barrel arbor In most watch movements, the barrel arbor willbe a profile-turned'part with six to eight shoulders of different diameters along its length. Furthermore, the central part, which is of maximum diameter, is provided-with several millings forming a hookto which is fastened the inside end of a spring-motor also equipped with a hook formed by bending the spring ata right angle. Of those shoulders of different diameters, four are used for pivoting and cons-equentlymust be machine finished. It will be clear that under such conditions, the manufacture of these barrel arbors consists of a sequence of costly operations; 1
  • Cylindrically shaped barrel arbors already. are known, which are detachably mounted in the movement frame.
  • an additionalpiece-acting as core that is, as thecentral component of the arbor, and ensuring that the springmotor is hooked, will be placed inside the drum.
  • This additional piece is provided with a cylindrical passage in the direction of its axis, and'the cylindrical arbor will be placed inside said passage.
  • the core must be machined together with its hook.
  • the detachable arbor is provided with a pivoting shoulder which must be machined on the lathe. While such a known device facilitates barrel disassembly, it-does-nothing to simplify the manufacture of the arbor and will .not
  • barrel arbors are known, wherein the core hook is replaced by a groove running parallel to the barrel arbor and fashioned into its central shoulder. In these devices again, many manufacturing operations are required to achieve the arbor.
  • the object of the present invention is a motor-barrel watchmovement characterized in that the barrel arbor is made of one piece provided with anchoring means for the spring-motor and with a circular surface the pivoting of the arbor in the movement frame and pivoting of the barrel about the arbor is oriented by four annular components bearing-on said cylindrical surface of said arbor. These annular components extend to the level of the apertures made on one hand in two components of the frame and on the other hand in the drum and in the barrel cover.
  • the attached drawing illustrates two embodiments of the watch-movement of the invention.
  • FIG. 1 is a fragmentary view in cross-section of one of those embodiments taken in a plane containing the barrelaxis;
  • FIG. 2 is a fragmentary view in cross-section of the other of those embodiments also taken ina plane containing the barrel axis.
  • the first embodiment relates to a watch-movement in which the ratchet-wheel 2 is mounted on the arbor of barrel 1 and lies between the drum of barrel 3 and the bridge of barrel 4.
  • a cover 14 is fastened to the drum of barrel 3, these two components being bored by central apertures 5 and 6 of the same diameter.
  • aperture 7, which'is fashioned in bridge 4 in order to ensure rotation of the upper end of arbor'l, and aperture 8, which is fashioned in the bottom plate 9 to ensure the rotation of the lowerend of arbor l, are of the same diameter as apertures 5 and '6, however, aperture 8 being partly closed towards the outer side of the bottom plate by an annular flange 10 which was made durprovides an axial stop for Arbor l is made of a simple piece and is'mainly characterized'by cylindrical lateral surface of constant dithe frame in apertures 7 and 8 and rotation of the barrel about the arbor, by means of apertures 5 and 6.
  • the spring-motor 17, therefore, will be provided with a hook at its lower end for entering one of grooves 16.
  • Arbor 1 may be manufactured in such manner that the cost will be particularly low. Starting with calibrated cylindrical bars drawn with four grooves 16,. it will suffice to section these bars on an automatic lathe and to machinethe bevel 11 in order to obtain the arbor blanks. The latter may be tumble-polished, which provides a particularly simple and effective method for that purpose. Grooves 16 also may be milled, but it is more efficient to draw them. It will beto advantage to foresee several grooves for easier assembly.
  • the ratchet-wheel 2 will be forcefitt'ed on its outer wall, the central aperture of said ratchet-wheel being provided with two or as many as four catches 18 adapted to the dimensions of grooves 16. This assembly will rigidly connect wheel 2 with arbor 1.
  • spring 17 will be so wound that its last coil will be of a lesser diameter than that of arbor 1. This spring being housed in barrel 3, 14, the
  • FIG. 2' shows an arbor the same as arbor 1, butofsomewhat different location with respect to the frame components'ln this latter embodiment, theratchet-wheel '20isfastened. as above to the upper end 'of arbor l.
  • Thelatte'rs circular surface traverses aperture 21 inbarrel bridge 22 from top to bottom, then passes through aperture 23, of barrel 24, then aperture 25 of cover of barrel 26, and then aperture 27 of bottom plate 28.
  • Spring motor 17 is fastened by its lower endto arbor l in the same manner as'in FIG. 1.
  • the crown-wheel 29 is provided with teeth of which the edges 290 are slightly sloped with respect to the plane of the wheel.
  • the teeth of wheel' 20 are similarly inclined.
  • Crown-wheel 29 is maintained in the axial position by a screw, as in conventional watch movements, so that the edges 29a lock wheel 20 and arbor l in the axial sense in such manner that there will be no play between wheel 20 and geartrain' bridge 22.
  • a support plate provided with pins 30 passing through apertures fashioned in bottom plate 28 and supporting the barrel in the proper height and resting against its cover is used for assembly. This support may comprise several pins 30.
  • This embodiment may be varied by providing the barrel arbor with a machined square at its upper end and with a threaded bore at the axis.
  • the ratchet-wheel also would be provided with a square aperture, as in conventional circumstances, and would be fastened to the arbors square by a screw of which the heads diameter would be approximately the same as the squares diagonal.
  • Such an arrangement also would allow to finish the rotational surfaces by tumble-polishing, which is more effective than rolling.
  • the barrel arbor and the ratchet-wheel may be easily removed from the frame, as if of one piece.
  • the far hook of spring 17 will be removed the moment the arbor has been pulled axially over a sufficient length.
  • One may then withdraw the motor-barrel from the movement, provided the components fastened between the barrel bridge and the bottom plate are arranged to leave free passage to the barrel between the barrel and the periphery of the movement.
  • ratchet-wheel In lieu of being projusted to the diameter of piece 1 and force-fitted to vided with catches at its central aperture, ratchet-wheel.
  • arbor 1 meetsve-ry stringent requirements. It was observed that'the initial bars could be trued by means of grinders working on a rollermounted bar (CENTERLESS process), which fact considerably simplifies the manufacture and allows achieving high accuracy. 1
  • the described arrangement facilitates assembly and'disassembly of the In the case of a self-winding watch-movement, the pinion(s) meshing with-the ratchet-wheel 6 may be pinions of the self-winding mechanism. They may also be provided with slanting toothing.
  • arbor manufacture is particularly advantageous with respect to cost, since one needs only a cylindrical bar which will be sectioned.
  • a motor-barrel watch movement characterized in that the barrel arbor is made ofone piece with a circular, cylindricalsurface, and in which rotation of the arbor in the frame of the movement and the rotation of the barrel about the arbor are ensured by four annular bearings surrounding said cylindrical surface and which lie in the space between an aperture fashioned on one hand in two of the frame components and on the other, in the drum and the barrel cover, said arbor including an anchoring means for the spring motor characterized as a recess formed in the cylindrical surface of said arbor.
  • a motor barrel watch movement having a barrel arbor and spring motor characterized in that the barrel arbor is made of one piece with a circular cylindrical surface and in which rotation of the arbor in the frame of the movement and the rotation of the barrel about the arbor are ensured by four annular bearings surrounding said cylindrical surface and which lie in the space between an aperture fashioned on one hand in two of the frame components and on the other in the drum and the barrelcover wherein said cylindrical surface of said arbor is provided with at least one longitudinal groove anchoring the inner end of the spring moin that said barrel arbor is tor, and thus constituting the anchoring means therefor.
  • a motor barrel watch movement having a barrel arbor and spring motor characterized in that the barrel arbor is made of one piece with a circular cylindrical surface and in which rotation of the arbor in the frame of the movement and the rotation of the barrel about the arbor are ensured by four annular bearings surrounding said cylindrical surface and which lie in the space between an aperture fashioned on one hand in two of the frame components and on the other in the drum and the" barrel cover wherein the arbor mounting aperture of one of the frame components is provided with an innershoulder in the vicinity of its outer sur face, this shoulder acting as an axial step for the barrel arbor.
  • a motor barrel watch movement having a barrel arbor and spring motor characterized in that the barrel arbor is made of one piece with a circular cylindrical surface and in which rotation of the arbor in the frame of the movement and the rotation of the barrel about the arbor are ensured by four annular bearings surrounding said cylindrical surface and which lie in the space between an aperture fashioned on one hand in two of the frame components and on the other in the drum and the barrel cover wherein the ratchet wheel is fastened to one end of the arbor and extends outside the frame and in that the axial positioning of the arbor is ensured on one hand by a stop rigidly connected to the frame and operating in concert with the ratchetwheel and on the other by an oblique toothing of a wheel-and-pinion mounted on the frame and meshing with the ratchet wheel.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Springs (AREA)
  • Transmission Devices (AREA)
  • Electromechanical Clocks (AREA)
US00416430A 1972-12-18 1973-11-16 Motor-barrel watch movement Expired - Lifetime US3846974A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1838572A CH566044A (ru) 1972-12-18 1972-12-18

Publications (1)

Publication Number Publication Date
US3846974A true US3846974A (en) 1974-11-12

Family

ID=4432647

Family Applications (1)

Application Number Title Priority Date Filing Date
US00416430A Expired - Lifetime US3846974A (en) 1972-12-18 1973-11-16 Motor-barrel watch movement

Country Status (4)

Country Link
US (1) US3846974A (ru)
CH (2) CH1838572A4 (ru)
FR (1) FR2210784B1 (ru)
GB (1) GB1446356A (ru)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077201A (en) * 1975-10-21 1978-03-07 Eta A.G. Ebauches-Fabrik Extractable barrel-arbor
US20100149928A1 (en) * 2008-12-15 2010-06-17 Les Artisans Horlogers Sarl Unit that comprises a winding ratchet that is attached to a barrel arbor and barrel arbor for this unit
EP2657794A1 (fr) * 2012-04-25 2013-10-30 ETA SA Manufacture Horlogère Suisse Arbre et ressort de barillet
US20150092523A1 (en) * 2012-04-04 2015-04-02 Rolex Sa Barrel shaft for a clock movement, barrel spring and barrel including such a spring and/or such a shaft
CN104871094A (zh) * 2012-12-18 2015-08-26 Eta瑞士钟表制造股份有限公司 钟表发条盒
JP2015537225A (ja) * 2012-12-18 2015-12-24 ウーテーアー・エス・アー・マニファクチュール・オロロジェール・スイス 時計の香箱
US9285772B2 (en) * 2014-06-30 2016-03-15 Rolex Sa Barrel for timepiece
CN110989319A (zh) * 2013-06-09 2020-04-10 苹果公司 电子手表

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1110061A (en) * 1914-04-02 1914-09-08 Herbert Kienzle Removable spring-housing for clocks.
US3564839A (en) * 1969-06-02 1971-02-23 Timex Corp Watch mainspring barrel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH16961A (fr) * 1898-07-25 1899-03-15 Charles Morlet Moteur perfectionné pour montres de poche
DE434664C (de) * 1925-01-29 1926-09-30 Carl Boeving Dipl Ing Sicherung fuer Federtriebwerke
CH318898A (de) * 1952-05-14 1957-01-31 Junghans Helmut Dr Ing E H Selbstaufzugsvorrichtung für Uhrwerke
CH356724A (fr) * 1959-08-21 1961-08-31 Ebauches Bettlach Sa Mouvement de montre à barillet

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1110061A (en) * 1914-04-02 1914-09-08 Herbert Kienzle Removable spring-housing for clocks.
US3564839A (en) * 1969-06-02 1971-02-23 Timex Corp Watch mainspring barrel

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077201A (en) * 1975-10-21 1978-03-07 Eta A.G. Ebauches-Fabrik Extractable barrel-arbor
US20100149928A1 (en) * 2008-12-15 2010-06-17 Les Artisans Horlogers Sarl Unit that comprises a winding ratchet that is attached to a barrel arbor and barrel arbor for this unit
US8038341B2 (en) * 2008-12-15 2011-10-18 Francois Durafourg Unit that comprises a winding ratchet that is attached to a barrel arbor and barrel arbor for this unit
US9448533B2 (en) * 2012-04-04 2016-09-20 Rolex Sa Barrel shaft for a clock movement, barrel spring and barrel including such a spring and/or such a shaft
US20150092523A1 (en) * 2012-04-04 2015-04-02 Rolex Sa Barrel shaft for a clock movement, barrel spring and barrel including such a spring and/or such a shaft
JP2015512519A (ja) * 2012-04-04 2015-04-27 ロレックス・ソシエテ・アノニムＲｏｌｅｘ Ｓａ 時計ムーブメント用香箱真、ゼンマイ、ならびにそのゼンマイおよび／またはその香箱真を備える香箱
US10401796B2 (en) 2012-04-04 2019-09-03 Rolex Sa Barrel shaft for a clock movement, barrel spring, and barrel including such a spring and/or such a shaft
EP2657794A1 (fr) * 2012-04-25 2013-10-30 ETA SA Manufacture Horlogère Suisse Arbre et ressort de barillet
CN103376727A (zh) * 2012-04-25 2013-10-30 Eta瑞士钟表制造股份有限公司 条轴和主发条
EP2674817A2 (fr) 2012-04-25 2013-12-18 ETA SA Manufacture Horlogère Suisse Procédé de fabrication d'un arbre de barillet horloger
EP2674817A3 (fr) * 2012-04-25 2017-05-17 ETA SA Manufacture Horlogère Suisse Procédé de fabrication d'un arbre de barillet horloger
US9317013B2 (en) 2012-04-25 2016-04-19 Eta Sa Manufacture Horlogère Suisse Method of producing drive element for a timepiece barrel including a barrel arbor and mainspring
CN104871094A (zh) * 2012-12-18 2015-08-26 Eta瑞士钟表制造股份有限公司 钟表发条盒
US9367037B2 (en) 2012-12-18 2016-06-14 Eta Sa Manufacture Horlogère Suisse Timepiece barrel
CN104871094B (zh) * 2012-12-18 2017-10-13 Eta瑞士钟表制造股份有限公司 钟表发条盒
JP2015537225A (ja) * 2012-12-18 2015-12-24 ウーテーアー・エス・アー・マニファクチュール・オロロジェール・スイス 時計の香箱
CN110989319A (zh) * 2013-06-09 2020-04-10 苹果公司 电子手表
CN110989319B (zh) * 2013-06-09 2021-10-08 苹果公司 电子手表
US9285772B2 (en) * 2014-06-30 2016-03-15 Rolex Sa Barrel for timepiece

Also Published As

Publication number Publication date
DE2351169A1 (de) 1974-06-20
CH1838572A4 (ru) 1974-12-31
CH566044A (ru) 1975-08-29
DE2351169B2 (de) 1976-09-23
FR2210784B1 (ru) 1976-10-01
FR2210784A1 (ru) 1974-07-12
GB1446356A (en) 1976-08-18

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