CH714033B1 - Torque smoothing for timepieces, in particular with striking mechanism. - Google Patents

Abstract

The invention relates to a timepiece with a movement driving an output mobile (3), a display mechanism such as a striking mechanism (100) when passing or a minute repeater, comprising a striking mobile. comprising a detent ratchet (22) with which a pawl (85) cooperates for performing a ringing, a ringing disengagement lever (55) to move any pawl away from the striking mobile (2), comprising a first rocker (50) carrying the pawl (85) and its spring (52), the output mobile (3) actuating a second lever (70), the pivoting of which drives that of the first lever (50). The striking mechanism (100) according to the invention comprises a torque smoother jumper (900), which a first spring (902) brings to bear on the output mobile (3), to consume, when the second rocker (70 ) is not in engagement with the output mobile (3), a torque equivalent to that which it consumes when it is in engagement with it. The invention also relates to an additional mechanism which comprises said torque smoothing jumper (900) and the first spring (902) and which is arranged to consume a torque equivalent to that of a watch display controlled through said output mobile ( 3) and the second rocker (70).

Description

Field of the invention

The invention relates to a timepiece comprising at least one movement comprising main energy storage means for supplying at least one resonator and arranged to continuously drive at least one output mobile comprising at least one at least one tooth, said timepiece further comprising at least one display mechanism arranged to be controlled by a said movement or by an action of a user, said display mechanism being supplied with energy at least by said main means energy storage through said output mobile, and said display mechanism comprising elastic return means with progressive arming under the action of said output mobile and arranged to modify the display at times controlled by said movement or by an action of a user, by disarming said elastic return means, the arming and disarming cycle of said elastic return means corresponding to a variatio n of the torque consumed by said display mechanism at the level of said output mobile, which comprises at least one tooth arranged to lift an intermediate rocker triggering by movement, which said display mechanism comprises.

[0002] The invention also relates to an additional mechanism for a timepiece comprising a striking mechanism for the execution of a passing strike and / or a minute repeater, and a movement comprising main storage means of energy for supplying at least one resonator and arranged to continuously drive at least one output mobile comprising at least one tooth, and arranged to trigger the operation of bells in passing.

[0003] The invention also relates to such a timepiece comprising at least one such additional mechanism.

[0004] The invention relates to the field of timepieces, and more particularly watches, comprising a striking mechanism, or a melody playing mechanism, such as music boxes.

Background of the invention

[0005] In a clockwork striking mechanism, the torque consumption is irregular. A significant amount of torque is consumed every quarter of an hour, but a low consumption occurs until the preparation of the next ring. This results in jerks in the finishing train, and also by a variation in the amplitude of the resonator of the clockwork movement.

Summary of the invention

[0006] The invention proposes to develop better regulation, by reducing the variations in torque consumption of the movement, without however canceling them, due to the higher torque consumption corresponding to the ringing of the full hour.

[0007] To this end, the invention relates to a timepiece according to claim 1.

By its simplicity, but which is only effective by the possibility of very precise fine adjustments offered by the invention, it also allows the optimization of mechanisms of existing timepieces, and the The invention also relates to an additional mechanism according to claim 8, which can be added to an existing timepiece.

[0009] The invention also relates to a timepiece comprising at least one such additional mechanism.

Brief description of the drawings

Other characteristics and advantages of the invention will become apparent on reading the detailed description which follows, with reference to the appended drawings, where: - Figures 1 to 6 show, schematically and in plan, in six successive positions , a detail of a particular embodiment of the invention, where the display mechanism is a striking mechanism incorporated in a timepiece, and which comprises, around an output mobile driven by a timepiece movement , here constituted without limitation by a star of four, on the one hand components specific to the striking mechanism: a trigger ratchet cooperating with a main pawl carried, as well as its spring, by a trigger lever by the movement, and a intermediate rocker triggering by the movement, periodically raised by a tooth of the output mobile, and the pivoting of which causes the pivoting of the triggering rocker by the movement, and on the other hand a torque smoother jumper, which a first spring tends to bring back to rest on the output mobile; - Figures 7 to 11 show, schematically, each time in top, bottom and perspective views, various components specific to this mechanism: - in Figure 7a star of four constituting a particular embodiment of the output mobile; - In Figure 8a mobile ring trainer with its mounted ratchet; - In FIG. 9a striking disengagement lever, comprising a triggering rocker by the movement, which carries a main striking pawl and a thrust spring which bears on the latter; - In Figure 10 the torque smoother jumper specific to the invention; - In Figure 11an intermediate trigger trigger by the movement which cooperates directly with the output mobile; FIG. 12 is a diagram representing, on the ordinate, the consumption of torque, as a function of time expressed on the abscissa; two torque curves substantially intersect: o on the one hand a first curve, in dotted line, with a periodic cycle, substantially rectangular, with non-zero torque values equal to each other, for time ranges of 3 minutes at the time shifts, and which corresponds to the additional resistant torque created by the torque smoother jumper, and on the other hand a second curve, in solid line, which corresponds to the consumption of torque by the striking mechanism without setting work of the invention; and this FIG. 12 comprises references A, B, C, D, E, F, corresponding to the respective instants of FIGS. 1 to 6; - Figure 13 is a block diagram showing a timepiece comprising a movement with its output mobile cooperating with a striking mechanism which incorporates the torque smoother jumper device according to the invention, - Figure 14 is another diagram -blocks representing a timepiece comprising a movement with its output mobile cooperating with a striking mechanism, and with an additional mechanism which comprises the torque smoother jumper device according to the invention; FIGS. 15 and 16 illustrate a detail of a variant comprising, between the output mobile and the intermediate rocker triggering by the movement that the mechanism comprises, an intermediate wheel synchronous with the output mobile and carrying a cam with which cooperates a support rocker, returned to the cam by a spring, not shown in the figure: in FIG. 15 the rocker rests on a radius concentric with the axis of the cam, the torque consumed is negligible; - In Figure 16la latch is supported on an ascending radius of the cam, the torque consumed corresponds to the drive of the intermediate trigger trigger by the movement.

Detailed description of the preferred embodiments

The invention relates to a timepiece 2000, in particular a watch, comprising at least one movement 200. This movement 200 comprises main energy storage means, such as a barrel or the like, for supplying at least one 'a resonator. The invention relates to both mechanical watches and electro-mechanical watches.

Such a timepiece 2000 can also be a music box, or include a music box.

The movement 200est arranged to continuously drive at least one output mobile 3 comprising at least one tooth.

This 2000 timepiece includes at least one display mechanism, which is arranged to be controlled by such a movement 200 or by an action of a user. This display mechanism is supplied with energy at least by the main energy storage means through said output mobile 3.

This display mechanism comprises elastic return means with progressive arming under the action of the output mobile 3, and which are arranged to modify the display at times controlled by a movement 200 or by an action of a user, by disarming the elastic return means. The arming and disarming cycle of the elastic return means corresponds to a variation in the torque consumed by the display mechanism at the level of the output mobile 3. This output mobile 3 comprises at least one tooth which is arranged to lift a rocker. intermediate triggering by the movement 70, which the said display mechanism comprises.

According to the invention, the display mechanism comprises a torque smoother jumper 900, which is arranged to cooperate in discontinuous support with the output mobile 3, either directly or through an intermediate gear. A first spring 902 tends to bring this torque smoother jumper 900 back to rest on the output mobile 3, so as to consume, when the intermediate rocker triggering by the movement 70 is not engaged with the output mobile 3, an equivalent torque to that consumed by the intermediate trigger lever by the movement 70 when it is engaged with the output mobile 3, so as to avoid jerks on the movement finishing gear 200, and to prevent any variation in amplitude of the movement. resonator.

More particularly, and as illustrated by the figures, the display mechanism is a striking mechanism 100. The output mobile 3 comprises at least one tooth, which is arranged to cooperate with control members of this mechanism ringtone.

[0018] The timepiece 2000 thus comprises at least one striking mechanism 100 for the execution of a passing strike and / or a minute repeater when this striking mechanism 100 comprises a minute repeater. The striking mechanism 100 is arranged to be controlled by a movement 200 or by an action of a user. The striking mechanism 100 is conventionally supplied with energy, by the main energy storage means or / and by secondary energy storage means 220 such as a striking barrel or the like.

This strike mechanism 100 is not detailed here. François LECOULTRE's work “Complicated watches”, Horlogères Publishing, Bienne (Switzerland), 1985, ISBN 2-88175-000-1, describes in detail the basic mechanisms constituting striking mechanisms, on pages 97 to 205, under different chapters: ringtones, ancient repetition, modern quarter rehearsal, simplified repetition, half-quarter repetition, Breguet half-quarter repeat, five-minute repetition, minute repeater, big bell.

[0020] Unless necessary, these basic mechanisms will not be repeated here in detail, the specialist in ring tones will be able to find their constitution in this universal reference work, in particular in the last two chapters cited above.

This striking mechanism 100 still comprises at least one mobile ringing trainer 2, as explained in particular in the chapter "grand bell" of the book "Complicated watches" and visible in particular in Figure 40 of this book. This ringing driving mobile 2 conventionally comprises a detent ratchet 22 and a rack pinion.

The detent ratchet 22est arranged to cooperate with a main pawl 85 for the execution of a ringing in passing, or with a minute repeater pawl, not shown in the figures, when the striking mechanism 100 comprises a minute repeater.

More particularly the striking mechanism 100comporte a striking disengagement lever 55, which is arranged to move away from the striking mobile 2the main pawl 85, and the minute repeater triggering pawl when the striking mechanism 100en comprises.

This striking release lever 55comporte a trigger lever by the movement 50, which carries the main striking pawl 85 and a thrust spring 52 which bears on the main striking pawl 85.

The output mobile 3 comprises at least one tooth arranged to lift an intermediate trigger lever by the movement 70, which the striking mechanism 100 comprises, and the pivoting of which causes the pivoting of the trigger lever by the movement 50.

According to the invention, the striking mechanism 100comporte a torque smoother jumper 900, arranged to cooperate with the output mobile 3, either directly as illustrated by the figures, or through an intermediate gear. A first spring 902 tends to bring back this torque smoother jumper 900, or the last mobile of its intermediate gear if necessary, resting on the output mobile 3, so as to consume, when the intermediate rocker triggering by the movement 70 is not engaged with the output mobile 3, a torque equivalent to that consumed by the intermediate trigger lever by the movement 70 when it is engaged with the output mobile 3, so as to avoid jolts on the finishing gear of the movement 200 and to prevent any variation in the amplitude of the resonator.

The following description explains only the preferred case of the direct connection between the torque smoother jumper 900 and the output mobile 3, the person skilled in the art will have no difficulty in interposing intermediate mobile, in particular if the space demands it. However, the last mobile arranged to cooperate directly with the output mobile must then include the particular characteristics explained below.

More particularly, the striking mechanism 100 comprises an eccentric 901 resting on an arm 903 of the torque smoother jumper 900 to adjust the position of the torque smoother jumper 900, so that the torque consumed by the torque smoother jumper 900 and that consumed by the Intermediate rocker triggered by movement 70 overlap as little as possible.

More particularly, the torque smoother jumper 900 comprises a polygonal head, comprising a main bearing surface 906 whose position is adjustable by this eccentric 901, separated by an edge 905 from a second bearing surface 904, which is provided to be adjusted in position in the factory by removal of material, after the installation of the movement 200 and the striking mechanism 100 in the timepiece 2000 and before the latter is put into service, and so as to avoid an early release of the torque smoothing jumper 900 and thus preventing any rebound at the resonator, and preventing too late release of the torque smoothing jumper 900, and thus preventing any loss of amplitude at the resonator.

Advantageously, the intermediate rocker triggering by the movement 70 comprises an elastic beak 72 arranged to cooperate with a tooth of the output mobile 3. This beak 72 can, depending on the force applied to it, be at a distance from a arm 75 of the intermediate lever triggered by the movement 70, or else resting on this arm 75.

More particularly, the rocker triggered by the movement 50est subjected to the return torque of a second spring 501 bearing on a pin 502 that it comprises.

The figures illustrate a particular, non-limiting embodiment of the output mobile 3, in the non-limiting form of a star 130de ring triggering by the movement comprising four teeth, so as to be able to lift, at each quarter of hour, the intermediate rocker triggered by movement 70.

Figures 15 and 16 illustrate a detail of a variant comprising an intermediate wheel 132 synchronous with the output mobile 3, by means of a first wheel 131 which the latter comprises, and carrying a cam 133 with which a end 134 of a support rocker 135, the other end 136 of which is subjected to the action of a spring, not shown to press the support rocker 135 on the cam 133. The end 134 of the rocker 135 goes through the periphery of the cam, which is indexed on its wheel 132 by a pin 137, for synchronization between the bearing latch 135 on the cam 133 and the output mobile 3 with the intermediate latch triggering by the movement 70. When the output mobile 3 is in contact with the Intermediate triggering rocker by movement 70, the support rocker 135 is on a concentric radius of the cam 133, the torque consumed by the rocker is then negligible; when the output mobile 3 is no longer in contact with the intermediate rocker triggering by the movement 70, the support rocker 135 is on an ascending radius of the cam 133, in order to consume the same torque as during the drive of the intermediate lever triggered by the movement 70. In FIG. 15, the end 134de the lever 135est resting on a radius 1330 concentric with the axis of the cam 133, the torque consumed is negligible. In FIG. 16, the end 134 of the lever 135 is supported on an ascending radius 1331 of the cam, the torque consumed corresponds to the drive of the intermediate trigger lever by the movement 70.

In a particular embodiment, the cam 133 comprises an alternation of concentric rays 1330 and ascending rays 1331, and is of the snail type, with a sudden jump between its largest radius and its smallest radius, as illustrated by the figures 15 and 16.

More particularly, the intermediate wheel 132 and the first wheel 131 are chosen so that each passage from one tooth to another on the star 130de ring triggering by the movement corresponds to a change in concentric radius 1330.

This variant can, again, be arranged in other forms, and in particular: the support on the cam can be done by means of a roller on the rocker; the shape of the cam can vary, and in particular by using the possibility of restoring torque to the output mobile 3, with a downward slope instead of a downward slope.

It is understood that the extrapolation of the invention thus makes it possible to manage different types of torque exchange, torque take-up, or torque return, at selected times. This functionality is particularly advantageous for many horological mechanisms, in particular of the type which periodically consumes a large torque and then nothing, all during a fairly short period of time, of the order of an hour or less.

Illustrated here in the particularly advantageous case of a large strike, the mechanism according to the invention can also be used, in no way limiting, in the following mechanisms, for which the watch manufacturer must manage large variations in torque, which usually lead to oversizing of certain components and degradation of energy efficiency: retrograde second; jumping second; retrograde minute; jumping minute; retrograde hour; jumping hour; chronograph; countdown; automaton; and the like.

The invention also relates to an additional mechanism 1000 for a timepiece 2000 as described above, comprising a movement 200 comprising main energy storage means for supplying at least one resonator and arranged to drive in continuous at least one output mobile 3 comprising at least one tooth. This timepiece 2000 comprises a display mechanism comprising elastic return means with progressive arming under the action of the output mobile 3, and which are arranged to modify the display at instants controlled by the movement 200 or by an action. of a user, by disarming the elastic return means, The arming and disarming cycle of the elastic return means corresponds to a variation in the torque consumed by the display mechanism at the level of the output mobile 3.

According to the invention, this additional mechanism 1000 comprises a torque smoother jumper 900, which is arranged to pivot on a plate or a bridge of such a timepiece 2000 or of such a display mechanism or of such a movement 200. The additional mechanism 1000 comprises a first spring 902, fixed to the plate or to the bridge, and which tends to bring back the torque smoother jumper 900 in discontinuous support on the output mobile 3, either directly or through it. an intermediate gear, so as to consume as much torque from the movement 200 as the display mechanism consumes when it consumes, during the phases when the display mechanism does not consume torque from the movement 200.

And the additional mechanism 1000 advantageously comprises an eccentric 901, which is arranged to be fixed on the plate or the bridge, and to bear on an arm 903 of the torque smoother jumper 900 to adjust the position of the torque smoother jumper 900, to that the torque consumed by the torque smoother jumper 900 and that consumed by the display mechanism overlap as little as possible.

[0042] More particularly, this additional mechanism 1000 is provided for a timepiece 2000, and in particular but not limited to a timepiece 2000, in particular a watch, of which at least one display mechanism is a striking mechanism. 100 for the execution of a bell on passing and / or a minute repeater, and a movement 200 comprising main energy storage means for supplying at least one resonator and arranged to continuously drive at least one mobile of output 3comportant at least one tooth, and arranged to trigger the operation of bells in passing.

According to the invention, this additional mechanism 1000 comprises a torque smoother jumper 900, arranged to pivot on a plate or a bridge of such a timepiece 2000 or of a striking mechanism 100 or of a movement 200. It comprises a first spring 902, fixed to the plate or to the bridge, and tending to bring back the torque smoother jumper 900 resting on the output mobile 3, either directly or through an intermediate gear, so as to consume as much torque of the movement 200 that the striking mechanism 100 consumes when it consumes, during the phases when the striking mechanism 100 does not consume torque of the movement 200.

The invention also relates to such a timepiece 2000 comprising at least one such additional mechanism 1000.

The kinematics is exposed in Figures 1 to 6, in relation to the instants A to F in the vicinity of half an hour and three quarters of an hour of the graph of Figure 12, which illustrates an example of implementation of the invention in a large bell wristwatch, with a couple on the ordinate, and a time in minutes on the abscissa.

Figure 1, at time A, shows the arm 903du jumper 900 at rest on the eccentric 901. A first tooth of the output mobile 3 is resting on the main bearing surface 906, on the side opposite to the 'edge 905, and its subsequent travel along this bearing surface 906, against the first spring 902, will result in the consumption of torque of the torque smoother jumper 900. A second tooth of the output mobile 3 is resting point on point on the spout 72, which it is about to leave. The pawl 85 is in the extreme rearward position with respect to the ratchet 22.

FIG. 2, at instant B immediately following instant A, of the order of one second later, shows the output mobile 3 pushing the jumper 900 in an anti-clockwise direction, still on the main surface d 'support 906, and by approaching the edge 905, and taking off its arm 903 from the eccentric 901. The consumption of torque smoothing is carried out during this phase. The intermediate rocker triggering by the movement 70, which is no longer retained by the output mobile 3, pivots in the anti-clockwise direction, its stroke being limited by a pin, not shown, which cooperates with the oblong slot that it involves. The pawl 85 is still stationary, but the pivoting of the intermediate trigger lever by the movement 70va allow that of the trigger lever by the movement 50, and therefore the movement of the pawl to the left of the figure.

Figure 3, at time C a few minutes after time B, shows the instant when the torque consumption is left by the torque smoothing jumper 900, to resume the torque consumption by the mechanism. alarm. One tooth of the output mobile 3 is on the edge 905, point on point, which corresponds to the high extremum point of the jumper 900, another tooth of the output mobile 3 comes into contact with the spout 72 of the intermediate rocker triggering by the movement 70 , without yet making it bend, which will allow the second spring 501 to be armed by pushing the trigger lever by the movement 50, then of the first spring 902 via the jumper 900.

Figure 4, at the instant D immediately following the instant C, of the order of one second later, shows the tooth of the output mobile 3 in the process of crossing the edge 905, and the other tooth of the output mobile 3 now pushes the beak 72 of the intermediate lever triggered by the movement 70, resting on its arm 75, thus taking up the play.

Figure 5, at time E a few minutes after time D, shows the clockwise travel of the intermediate trigger lever by the movement 70s under the thrust of a tooth of the output mobile 3, corresponding to the arming of the bell triggering rocker. The opposite tooth of the output mobile 3 is along the second bearing surface 904. The jumper 900 drops slowly clockwise, accompanying the rotation of the output mobile 3, and restores torque when the ringing is triggered. The arm 903 of the jumper 900 returns in contact with the eccentric 901. The fine adjustment of the latter allows the precise adjustment of the position of the edge 905 of the torque smoother jumper 900. The pawl 85 begins to retreat.

Figure 6, at time F a few minutes after time E, shows the output mobile 3 without any contact with the jumper 900 which rests on the eccentric 901, and which completes the thrust in the clockwise direction of spout 72 and of the intermediate triggering lever by movement 70, the face of which drives the triggering lever by movement 50. The continuation of the rotation of the output mobile 3 then brings the assembly into the position of FIG. 1.

Claims (9)

1. Timepiece (2000) comprising at least one movement (200) comprising main energy storage means for supplying at least one resonator and arranged to continuously drive at least one output mobile (3 ) comprising at least one tooth, said timepiece (2000) further comprising at least one display mechanism arranged to be controlled by a said movement (200) or by an action of a user, said display mechanism being supplied with energy at least by said main energy storage means through said output mobile (3), and said display mechanism comprising elastic return means with progressive arming under the action of said output mobile (3) and arranged to modify the display at times controlled by a said movement (200) or by an action of a user, by a disarming of said elastic return means, the cycle of arming and disarming of said corresponding elastic return means To a variation of the torque consumed by said display mechanism at the level of said output mobile (3), which comprises at least one said tooth arranged to lift an intermediate rocker triggering by the movement (70), which the said display mechanism comprises , characterized in that said display mechanism comprises a torque smoother jumper (900) arranged to cooperate in discontinuous support with said output mobile (3), either directly or through an intermediate gear, and that a first spring (902) which said display mechanism comprises is arranged to bring back to rest on said output mobile (3), so as to consume, when said intermediate movement trigger lever (70) is not engaged with said output mobile (3), a torque equivalent to that consumed by said intermediate movement trigger lever (70) when it is in engagement with said output mobile (3), so as to avoid jolts on a cog of finishing said movement (200) and preventing any variation in amplitude of said resonator. 2. Timepiece (2000) according to claim 1, characterized in that said display mechanism is a striking mechanism (100) for the execution of a striking passage and / or minute repeater when said mechanism ring (100) comprises a minute repeater, said strike mechanism (100) being supplied with energy by said main energy storage means and by secondary energy storage means (220), and said strike mechanism ( 100) comprising at least one ringing drive mobile (2) comprising a detent ratchet (22) which is arranged to cooperate with a main pawl (85) for performing said ringing as it passes or with a minute repeater pawl when said striking mechanism (100) comprises a minute repeater, characterized in that said striking mechanism (100) comprises a striking disengaging lever (55) arranged to move away from said striking mobile device (2) said main pawl ( 85) and said minute repeater release pawl when said strike mechanism (100) has one, said strike release lever (55) including a motion release latch (50) which carries said primary strike pawl (85). ) and a thrust spring (52) which bears on said main bell pawl (85). 3. Timepiece (2000) according to claim 2, characterized in that said striking mechanism (100) comprises an eccentric (901) arranged to bear on an arm (903) of said torque smoother jumper (900) for adjusting the position of said torque smoother jumper (900) so that the torque consumed by said torque smoother jumper (900) and that consumed by said intermediate movement trigger lever (70) overlap as little as possible. 4. Timepiece (2000) according to claim 3, characterized in that said torque smoother jumper (900) comprises a polygonal head comprising a main bearing surface (906) whose position is adjustable by said eccentric (901). ), said main bearing surface (906) being separated by a ridge (905) from a second bearing surface (904) which is intended to be adjusted in position at the factory by removing material, after installation of said movement (200) and of said striking mechanism (100) in said timepiece (2000) and before the latter is put into service, so as to avoid an early release of said torque smoother jumper (900) and to thus preventing any rebound at said resonator, and preventing too late release of said torque smoother jumper (900) and thus preventing any loss of amplitude at said resonator. 5. Timepiece (2000) according to one of claims 2 to 4, characterized in that said intermediate rocker triggering by the movement (70) comprises a beak (72) resilient arranged to cooperate with a said tooth of said mobile of output (3). 6. Timepiece (2000) according to one of claims 2 to 5, characterized in that said movement trigger lever (50) is subjected to the return torque of a second spring (501) bearing on a pawn (502) that it includes. 7. Timepiece (2000) according to one of claims 1 to 6, characterized in that said output mobile (3) is a star (130) having four teeth, so as to be able to lift, at each quarter of time, said intermediate trigger trigger by movement (70). 8. Timepiece (2000) according to one of claims 1 to 7, characterized in that said output mobile (3) comprises a first wheel (131) for driving an intermediate wheel (132) carrying d 'a cam (133) with which a first end (134) of a support lever (135) cooperates, the other end (136) of which is subjected to the action of a spring arranged to press said lever d 'bearing (135) on said cam (133), the profile of said cam (133) being such that, when said output mobile (3) is in contact with said intermediate rocker triggering by movement (70), said first end of said support rocker (135) is in contact with a concentric radius of said cam (133), and, when said output mobile (3) is no longer in contact with said intermediate triggering rocker by movement ( 70), said first end of said support rocker (135) is in contact with an ascending radius of said cam (133), in order to conso mmer the same torque as when driving said intermediate trigger lever by the movement (70). 9. Additional mechanism (1000) for a display mechanism of a timepiece (2000) according to one of claims 1 to 8, characterized in that said additional mechanism (1000) comprises said torque smoother jumper (900 ), arranged to pivot on a plate or a bridge of a said timepiece (2000) or of a said display mechanism or of a said movement (200), and comprises said first spring (902) arranged to be fixed to said plate or to said bridge and tending to bring back said torque smoother jumper (900) in discontinuous bearing on said output mobile (3), either directly or through an intermediate gear, so as to consume as much of torque from said movement (200) that said display mechanism consumes when it consumes, during the phases when said display mechanism does not consume torque from said movement (200), and in that said additional mechanism (1000) comprises said eccentric (901) arranged to be fixed on said plate or the said bridge, and to rest on an arm (903) of said torque smoother jumper (900) to adjust the position of said torque smoother jumper (900) so that the torque consumed by said torque smoother jumper (900) and that consumed by said display mechanism overlap as little as possible.