US3568432A - Chronograph-watch with independently mounted chronograph mechanism - Google Patents

Chronograph-watch with independently mounted chronograph mechanism Download PDF

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Publication number
US3568432A
US3568432A US760556A US3568432DA US3568432A US 3568432 A US3568432 A US 3568432A US 760556 A US760556 A US 760556A US 3568432D A US3568432D A US 3568432DA US 3568432 A US3568432 A US 3568432A
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US
United States
Prior art keywords
chronograph
lever
return
wheel
zero
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
Application number
US760556A
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English (en)
Inventor
Gerald Dubois
Francois Berthoud
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.)
Dubois and Depraz SA
HEUER LEONIDAS
LEON BREITLING SA G
Original Assignee
Dubois and Depraz SA
HEUER LEONIDAS
LEON BREITLING SA G
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 Dubois and Depraz SA, HEUER LEONIDAS, LEON BREITLING SA G filed Critical Dubois and Depraz SA
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Publication of US3568432A publication Critical patent/US3568432A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G04B29/00—Frameworks
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0804—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms
    • G04F7/0809—Watches or clocks with stop devices, e.g. chronograph with reset mechanisms with single hammers, i.e. one hammer acts on each counter
    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph
    • G04F7/0866—Special arrangements
    • G04F7/0885—Modular constructions involving interchangeability with one or more chronograph modules on a single base movement

Definitions

  • the present invention relates to a chronograph-watch characterised by the fact that almost all elements of the chronograph mechanism are carried by an independent frame which is removably secured to the frame of the clockwork.
  • FIG. 1 is a plan view of a watch showing the chronograph mechanism in its rest position.
  • FIG. 2 is a view similar to that of FIG. 1, in the running position of the chronograph.
  • FIG. 3 is a view similar to FIGS. 1 and 2, in the return to zero position of the chronograph.
  • FIGS. 4 to 7 are sectional views along lines IVIV, V-V, VIVI, and VII-VII, respectively, of FIG. 2.
  • FIG. 8 is a sectional view of a detail, at an enlarged scale.
  • FIG. 9 is a plan view of a detail, at an enlarged scale.
  • the chronograph mechanism of the watch represented comprises a frame constituted by a base board 1 and by two bridges 2 and 3 secured to base board 1 by pillars 80 (FIG. 6).
  • the base board is secured directly to the base plate 81 of the clockwork of the watch by means of pillars 82.
  • One of these pillars 82 is represented in FIG. 8 as passing freely through a hole 83 provided in the gear train bridge 84 of the clockwork.
  • the axis of the chronograph wheel carries a chronograph wheel as well as a return-to-zero heart 6.
  • the chronograph wheel 5 is driven, when the chronograph is running, by a driving pinion 7 (FIG. 4), the axis 8 of which is pivotally mounted between gear train bridge 84 of the clockwork and a small bridge 9 secured to a rocking lever 10, hereafter called coupling rocking lever, pivotally mounted on a screw 11 screwed in a pillar 85 carried by the frame of the chronograph (FIG. 7).
  • This coupling rocking lever is submitted to the action of a return spring 12 which urges it into the position represented in FIG. 2 in which the driving pinion 7 is in mesh with the chronograph wheel 5.
  • the axis 8 of driving pinion 7 carries a second pinion 86 (FIG. 4) in mesh with a driving wheel 87 which constitutes an output of the clockwork, mounted at the extremity of the axis 88 of the driving wheel and pinion ice 89-90 of the clockwork, which extends beyond the gear train bridge 84 of the clockwork.
  • the second pinion 86 is driven by and continuously in is only in mesh with chronograph wheel 5 when the chronograph is running, the disengagement of driving pinion 7 from chronograph wheel 5 being produced by an oscillating or rocking movement of the axis 8, produced by the movements of the coupling rocking lever 10.
  • toothing of driving pinion 7, as well as the toothing of driving chronograph wheel 5 is very fine, with sharp teeth, permitting an easy coupling of the two elements.
  • the coupling rocking lever 10 being relatively remote from the base board 1, is carried by two pillars 13 each carrying a screw 14, under the head of which slides the rocking lever.
  • a blade spring 16 acts axially on a shoulder of chronograph wheel axis 4 for producing a friction which prevents any flapping movements of the handle of the chronograph.
  • the displacements of the coupling rocking lever 10 are produced by the return-to-zero hammer of the chronograph, designated by 17, articulated at 18 on the chronograph frame.
  • This hammer is provided with a heel 17a carrying an eccentric abutting member 19 acting on a shoe-shaped end part 10a, shoe-shaped, of the coupling rocking lever 10, when the chronograph mechanism is in its rest position and in its return-to-zero position, for displacing the coupling rocking lever 10, against the action of its return spring 12 and, thus, uncoupling driving pinion 7 from chronograph wheel 5.
  • the return-to-zero hammer 17 of the chronograph is rigid with two superposed plates, one of which, designated by 20, constitutes a distance-member, and the other of which, designated by 21, is cut in such a way as to constitute a cam to coact on the one hand with a jumper 22 acting on three bearing surfaces 23, 24 and 25 of this cam, for ensuring the stability of three distinct positions of the return-to-zero hammer, and on the other hand with a rocking lever 26, called the reverse lever, serving to control the displacements of the hammer and acting alternatively on the two bearing surfaces 27 and 28 of the cam 21.
  • the reverse lever 26 constitutes one of the two elements of a control lever of the return-to-zero hammer, the second element of which is constituted by a sliding member 29, called, control lever, guided by two pins 30 and 31 passing through two elongated apertures 32 and 33,
  • the push-button which controls the running and the stopping of the chronograph acts directly on the control lever 29 for displacing it, by a movement of translation, against the action of a return spring 35.
  • the extremity of the control lever 29 is provided With a notch 36 in which is engaged a finger 26a of the reverse lever 26, under the action of a return spring 37 acting on a pin 38 carried by the reverse lever, this spring being, on the other side, secured to the control lever 29.
  • the reverse lever 26 is articulated on the extremity of the control lever 29, while being yieldable by influence of return spring 37 in such a way as to bear on the two end surfaces of the control lever situated on both sides of its notch 36.
  • a return-to-zero rocking lever 39 is articulated at 40 on the frame of the chronograph.
  • the return-to-zero push-button represented diagrammatically by the arrow 41, acts on this rocking lever for rotating it in the counter-clockwise direction, against the action of the return spring 35.
  • the return-to-zero rocking lever 39 acts, by its end opposite to its pivotal point, on the cam 21, rigid with the return-to-zero hammer 17, for bringing this latter into the return-to-zero position (FIG. 3) in which its peen, designated by 17!), acts on the return-tozero heart 6 of the chronograph.
  • the return-to-zero rocking lever 39 is ended by a nose 39a arranged in such a way as to abut against a portion 21a of cam 21, in case the return-to-zero rocking lever should be operated when the chronograph is running, thus preventing the return-to-zero hammer 17 from being brought into its working position at the wrong time.
  • the extremity of the reverse lever 26 acts, when a pressure is exerted on the return-to-zero push-button 41, on the bearing surface 27 of cam 21 for rotating return-to-zero hammer 17 in the clockwise direction, until the extremity of the reverse lever abuts against a circular portion of cam 21 situated between its bearing surfaces 27 and 28, that stops the displacement of the control lever 29 and of the reverse lever 26.
  • the cam 21 and the return-to-zero hammer 17 then occupy their intermediary position corresponding to the stopping of the chronograph.
  • the chronograph mechanism comprises a brake lever 43, articulated on a pillar 44 (FIG. 6), and which is provided with an elastic arm 43a bearing on a pin 45 carried by the base board 1, this arm thus returning resiliently said brake lever into its working position (FIG. 1) in which its portion 46, constituting a shoe, acts radially on the chronograph wheel 5 for stopping it.
  • the chronograph includes a minute counter, running at the rate of one revolution per 30 minutes, the axis 49 of which is pivoted between the base board 1 and the bridge 2 of the chronograph frame, and which extends through a tubular sleeve constituting the axis of rotation of the oscillating mass, eccentrically mounted, of the automatic winding device of the clockwork.
  • This axis 49 carries a counter wheel 50 meshing with a first intermediary wheel 51 rotatably mounted on a rocking lever 52, articulated on an eccentric member 53 carried by the base board 1 of the chronograph frame.
  • This rocking lever 52 is located in a recess 91 provided in the base board 1 (FIGS. 4, 5 and 6).
  • the axis of the chronograph carries a control finger 92 (FIG. 4), the angular position of which is adjustable, acting, once. per revolution, on first intermediary Wheel 51 for driving it for one tooth.
  • the gearing ratio between wheels 50 and 51 being 1:1, counter wheel 50 is also driven step by step, for one tooth, a jumper 54 acting thereon for ensuring the stability of its rest position.
  • the axis 49 carries a return-to-zero heart 55 with which acts a second part, designated by 17c, of the return-tozero hammer 17.
  • a screw 56 with a conical head, screwed in the distance-member 20, acts on part 170, which is slightly resilient, of the hammer 17, for deforming it slightly and thus adjusting exactly its position with respect to the peen 17b.
  • the chronograph includes a half-hours counter, rotating at the rate of one revolution per 12. hours, the axis 57 of which is pivoted between the base board 1 and the bridge 3 of the chronograph frame (FIG. 5) and which extends through an aperture. provided in a circular ridge shown by the base board 1 of the clockwork, this circular ridge receiving the crown wheel rotatably mounted thereon.
  • the axis 57 carries a wheel 58, with which cooperates a jumper 59 meshing with a wheel 60- carried by an axis 61, also pivoted between the base board 1 and the bridge 3.
  • the rocking lever 52 carries a second intermediary wheel 62 meshing with the first one, the axis '63 of which carries a control finger '95 acting, once per revolution, on wheel 60.
  • This control finger '95 (FIGS. 5 and 9) is deformable so as its radial position, and consequently its engagement with the toothing of wheel 60, can be adjusted. Its angular position is also adjustable, this finger being rigid with a split hub 95a, frictionally mounted on axis 63 of second intermediary wheel 62.
  • the gearing ratio between wheels 58 and 60 being 111, the return-to-zero heart of the hours counter, designated by 64 (FIG. 5), with which cooperates a return-to-zero hammer 65, is carried by the axis '61 of wheel 60 and not by axis 57 of the half-hours counter.
  • the return-tozero hammer 65 is articulated at 66 on the chronograph frame and is submitted to the action of a return spring 67 urging it against the return-to-zero heart 64.
  • This hammer 65 is rigid with a control lever 68 with which cooperates heel 17a of the return-to-zero hammer 17.
  • heel 17a acts on control lever 68 against the action of the return spring 67 for maintaining the hammer -65 removed from the returnto-zero heart 64;
  • the control lever 68 is released and the hammer '65 acts on the heart 64 for returning the half-hours counter to zero.
  • the rocking lever 52 is provided with an arm 52a above which extends the extremity 96a of a small bar 96 secured to the base board 1 by a screw 97 and the purpose of which is, on the one hand, to hold the rocking lever upwardly (FIG. 6) and, on the other hand, to be used as a support for the pillar 44 on which is articulated the brake lever 43.
  • the arm 52a of the rocking lever carries a pin 69 on which bears a return spring 70 urging the extremity of the arm 52a against an eccentric a-buting element 71 (FIGS. 1 and 2).
  • first intermediary wheel 51 is situated on the way of control finger 92 of the chronograph, so that wheel 51, and consequently the two counters, of minutes and of half-hours, are driven.
  • the position of the eccentric abutting member 71 one may vary slightly the working position of the rocking lever 52 and, consequently, the engagement of the control finger 92 of the chronograph with wheel 51. It is to be noted that, in the same way, but while acting on the eccentric member 53, one may displace slightly the point of articulation of the rocking lever 52, thus modifying the engagement of counter wheel 51 with wheel 50. This last adjustment must be effected before the previously mentioned one.
  • the rocking lever 52 occupies its working position when the chronograph is running or stopped, the chronograph wheel 5 being not driven in this last case.
  • the return-to-zero rocking lever 39 operates, by means of a pin 72, an intermediary lever or lever 73, articulated at 74 on the chronograph frame and which acts, by the extremity of a resilient arm 73a of this lever, on a finger 52b of the rocking lever 52 for displacing this latter against the action of its return spring 70 and thus bringing the wheel 51 out of the way of the control finger 92 of the chronograph; likely, in this position, the control finger 95 of the intermediary wheel 62 does not come in contact with wheel 60. Consequently, the return-to-zero of the two counters can be effected while the counters are free, without any risk of a control finger being sprung.
  • the counters of minutes and of half-hours are situatedon the same frame as the rest of the elements of the chronograph mechanism, all the elements, except for the oscillating driving pinion 7, being thus carried by this frame, while in conventional chronograph mechanisms, the hours and minutes counters are generally mounted on the base plate of the clockwork, on the side thereof facing the dial.
  • the clock mechanism including a base plate and the frame being supported by the base plate of the clock mechanism.
  • the frame being supported by pillars extending upwardly of the clock mechanism and being secured to the base plate of the clock mechanism.
  • the clock mechanism including a second wheel and pinion and gear train bridge, the axis of the second wheel and pinion extending upwardly of the gear train bridge and carrying a wheel upwardly of the gear train bridge for driving the chronograph mechanism.
  • a chronograph-watch in a chronograph-watch according to claim 12, with the hammer being controlled by a two-part lever with a first part being slidably mounted on the frame and with the other being subject to the action of a return spring for urging it in a determined position with respect to the first part, a cam being provided with two bearing surfaces situated on both sides of the geometrical axis connecting the articulation point of the hammer to the articulation point of the two portions of the lever, whereby, according to the position occupied by the hammer, the reverse lever acts respectively on one or the other of the bearing surfaces for displacing the hammer.
  • the reverse lever rotating, during the movement of the control lever, around its axis of articulation on the control lever, against the action of its return spring, the return spring returning the reverse lever into its rest position with respect to the control lever as soon as the pressure exerted on the control lever is released, with the reverse lever being then able to act on the second bearing surface of the cam when a new pressure is exerted on the control lever to bring the hammer back into its position corresponding to the running of the chronograph mechanism.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
US760556A 1967-09-22 1968-09-18 Chronograph-watch with independently mounted chronograph mechanism Expired - Lifetime US3568432A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1338667A CH527462A (fr) 1967-09-22 1967-09-22 Montre-chronographe

Publications (1)

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US3568432A true US3568432A (en) 1971-03-09

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Application Number Title Priority Date Filing Date
US760556A Expired - Lifetime US3568432A (en) 1967-09-22 1968-09-18 Chronograph-watch with independently mounted chronograph mechanism

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US (1) US3568432A (de)
CH (2) CH527462A (de)
DE (1) DE1798284A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706196A (en) * 1970-07-29 1972-12-19 Suwa Seikosha Kk Consturction of thin timepiece
JPS4828466U (de) * 1971-08-12 1973-04-07
EP1791043A1 (de) * 2005-11-24 2007-05-30 Vaucher Manufacture Fleurier SA Chronographenwerk für Uhr
US20110164474A1 (en) * 2002-02-01 2011-07-07 Lvmh Swiss Manufactures Sa Device comprising a clock movement and a chronograph module

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH658567GA3 (de) * 1984-03-28 1986-11-28
CH714406A1 (fr) * 2017-12-05 2019-06-14 Guenat Sa Montres Valgine Mécanisme pour mouvement de montre chronographe.

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706196A (en) * 1970-07-29 1972-12-19 Suwa Seikosha Kk Consturction of thin timepiece
JPS4828466U (de) * 1971-08-12 1973-04-07
JPS5240785Y2 (de) * 1971-08-12 1977-09-14
US20110164474A1 (en) * 2002-02-01 2011-07-07 Lvmh Swiss Manufactures Sa Device comprising a clock movement and a chronograph module
US8308345B2 (en) 2002-02-01 2012-11-13 Lvmh Swiss Manufactures Sa Device comprising a clock movement and a chronograph module
US8182138B2 (en) * 2002-02-01 2012-05-22 Lvmh Swiss Manufactures Sa Device comprising a clock movement and a chronograph module
US20110164477A1 (en) * 2002-02-01 2011-07-07 Lvmh Swiss Manufactures Sa Device comprising a clock movement and a chronograph module
EP1791043A1 (de) * 2005-11-24 2007-05-30 Vaucher Manufacture Fleurier SA Chronographenwerk für Uhr
CN101313259B (zh) * 2005-11-24 2011-05-11 弗勒里耶沃谢制造股份有限公司 钟表记时器的钟表机构机芯
US7597471B2 (en) 2005-11-24 2009-10-06 Vaucher Manufacture Fleurier S.A. Time piece chronograph clockwork movement
US20080310257A1 (en) * 2005-11-24 2008-12-18 Vaucher Manufacture Fleurier S.A. Time Piece Chronograph Clockwork Movement
WO2007060151A3 (fr) * 2005-11-24 2007-08-30 Vaucher Mft Fleurier Sa Mouvement de chronographe pour piece d'horlogerie
WO2007060151A2 (fr) * 2005-11-24 2007-05-31 Vaucher Manufacture Fleurier S.A. Mouvement de chronographe pour piece d'horlogerie

Also Published As

Publication number Publication date
CH1338667A4 (de) 1972-03-15
DE1798284A1 (de) 1971-11-25
CH527462A (fr) 1972-03-15

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