EP0791191B1 - Mystery clock - Google Patents

Mystery clock Download PDF

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Publication number
EP0791191B1
EP0791191B1 EP96931872A EP96931872A EP0791191B1 EP 0791191 B1 EP0791191 B1 EP 0791191B1 EP 96931872 A EP96931872 A EP 96931872A EP 96931872 A EP96931872 A EP 96931872A EP 0791191 B1 EP0791191 B1 EP 0791191B1
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EP
European Patent Office
Prior art keywords
surround
dial
indicators
driving means
fixed 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.)
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EP96931872A
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German (de)
French (fr)
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EP0791191A1 (en
Inventor
Gérard GANTET
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.)
Van Cleef and Arpels SA
Van Cleef and Arpels France SAS
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Van Cleef and Arpels SA
Van Cleef and Arpels France SAS
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Publication of EP0791191A1 publication Critical patent/EP0791191A1/en
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    • 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
    • G04B45/00Time pieces of which the indicating means or cases provoke special effects, e.g. aesthetic effects
    • G04B45/04Time pieces with invisible drive, e.g. with hands attached to a rotating glass disc

Definitions

  • the present invention relates to a pendulum, and more particularly to a so-called "mysterious" clock because of its transparency almost total.
  • Such pendulums are in the form of a frame fixed with a circular light inside which are arranged transparent disks driven at their periphery.
  • pendulums are well known in the state of technical, and we can refer by way of example to document FR-A-2,632,426 describing a mysterious pendulum of a particular type, with extensible needles.
  • the section of the transparent discs corresponds to the shape and dimensions of the pendulum light, so that each disc rotates around of its fixed axis.
  • the object of the present invention is to provide a pendulum reinforcing the surprising effect, by a displacement of the axes of the discs or analogues, while retaining an apparent absence of connection between the needles or the like and the clockwork motor mechanism.
  • a circular disc (or ring) indicating hours or minutes, while rotating around its geometric axis, can move globally by relation to a ring (or a disc) of fixed axis following a movement of rolling without sliding, for example by meshing, in which said axis geometric describes a circle. Reading the time is done by appreciation visual of the relative position of the ring and the disc.
  • document WO-A-94.04965 describes a pendulum comprising a case rotating at constant speed in the clockwise around a fixed axis and eccentrically carrying a mechanism classic watchmaking controlling the rotation of the case and that of a hand minute indication.
  • a classic graduated dial is located behind the needle minutes, and it is weighted down to maintain itself by gravity in position fixed angle, ie so that the line "12 o'clock - 6 o'clock" remains always vertical.
  • the case has a mark or an hour index, for example constituted by a point part. The hours are read from of the angular position of the case relative to the dial, and the reading of the minutes is usually done from the position of the needle relative to this same dial behind it.
  • the object of the invention is therefore to propose a pendulum "mysterious" which, while allowing an easy reading of the time, by coaxiality hour and minute indicators, presents another surprising effect by the mobility of the geometric axes of rotation of these indicators on themselves.
  • the second drive means are arranged so that the dial remains in position fixed angular.
  • the second drive means cooperate by meshing with a fixed toothed crown carried by said frame fixed.
  • the second drive means include a gear train with at least one pinion input and at least two output pinions cooperating by meshing respectively with this ring gear and the toothed periphery of a part at less of said dial and indicators carried by said border.
  • the gear train extends between the ring gear and the toothed periphery of at least part said dial and indicators, this train being carried by a mobile element fixedly supporting the border and being hidden by a decorative element.
  • the border is substantially tangent to the fixed frame and the gear train is carried by a mobile element supporting fixedly the border and is partly housed inside the fixed frame and for part inside the border, in the tangency zone of the fixed frame and the border.
  • the second drive means comprise at least two floating toothed rings housed in the fixed frame and each cooperating, on the one hand, with the periphery tooth of one of said dial and indicators carried by the border and, on the other hand, with a drive gear housed in the fixed frame.
  • the pendulum comprises an element mobile comprising a first part for indicating the time and a second part masking part of said second drive means and extending from said first part to the inner contour of the fixed frame.
  • the second part of the movable element is transparent or free of material, except in an area masking said part said second drive means.
  • said geometric axes X and Y are confused or distinct, the border being, in the latter case, tangent to the contour inside the fixed frame or spaced from it.
  • the pendulum is characterized in that the first drive means are arranged for drive the border and the dials and indicators it wears clockwise, for the observer, at an angular speed of 1/12 revolution per hour, in that the hour indicator is integral with said border, and in that the latter drive means include an output gear for the indicator of minutes and an output gear for the dial.
  • the pendulum is characterized in that the first drive means are arranged for drive the border and the dials and indicators it wears clockwise, for the observer, at an angular speed of 1 revolution per hour, in that the minute indicator is integral with said border, and in that the latter drive means include an output gear for the indicator of hours and an output gear for the dial.
  • the fixed frame has a circular light in which the said border and the dials rotate and indicators that it carries, around said fixed axis X of the fixed frame, the border belonging to a movable element extending at least in part to the edge of said circular light, this movable element being transparent or free of material outside of said border, except in at least one masking area said first and / or second drive means.
  • At least part of said dial and indicators consist of transparent circular discs bearing markings or marks.
  • one of said indicators may consist of an indicator needle fixedly carried by the border.
  • Figure 1 shows a front view of a first embodiment of a pendulum according to the present invention. It involves a base (1) inside which is housed the clockwork motor mechanism. So base is directly mounted a fixed frame (2) in the form of a circular ring surrounding a light (3) also circular in shape. Inside this light (3) is arranged a moving element or element (4) which comprises a first circular part (5) for reading or indicating the time and a second part (6) supporting at least one opaque decorative element (6 '), namely a animal figurine in the example described.
  • a moving element or element (4) which comprises a first circular part (5) for reading or indicating the time and a second part (6) supporting at least one opaque decorative element (6 '), namely a animal figurine in the example described.
  • the first part (5) has a border circular (20) enclosing and supporting the time indication members, as described below.
  • This part (5) is completely transparent, except its border (20) and time indication devices - hands, graduations or numbers - which seem to be hanging in a vacuum.
  • the second part (6) can complete with its crescent or ring shape the circular shape of the part (5) of the movable element (4), up to the circular inner edge (7) of the frame fixed (2); this second part is then preferably transparent, except in the area of the decorative element (6 ') masking means for driving the organs time indication, as described below, so that, for the user, light can pass through it except in the area corresponding to the element decorative (6 ').
  • the part (6) is free of material except in the area of the decorative element (6 '); in this preferred variant, there are thus two first voids inside the frame (2), on either side of the moving assembly (4), and a third void inside the edge (20) of the circular part (5) of this crew.
  • the moving assembly (4) rotates around a fixed axis X which is the common axis of the circles defining the moving assembly (4) and the edge interior (7) of the fixed frame (2); outside, the moving part (4) is received at the interior of the fixed frame (2) by slightly penetrating it into at least two zones (8, 9) diametrically opposite.
  • the first zone (8) corresponds approximately to the point of tangency of the first part (5)
  • the second zone (9) corresponds to two points of the second part (6).
  • the circular border (20) defines the outer contour of the part (5) which receives the organs for reading and indicating the time.
  • organs are preferably constituted by transparent discs, namely a dial (10), bearing the usual hour markers (11) (graduation on the Figure 1 or numbers, only one of which is shown in Figures 2 and 3), a disc minutes (28) marked (28 '), for example in the shape of a needle radial, and an hour disc (26) bearing a marking (26 ') different from the marking (28 '), for example a radial needle shorter than the needle (28'), and this in the usual way.
  • a dial (10) bearing the usual hour markers (11) (graduation on the Figure 1 or numbers, only one of which is shown in Figures 2 and 3), a disc minutes (28) marked (28 '), for example in the shape of a needle radial, and an hour disc (26) bearing a marking (26 ') different from the marking (28 '), for example a radial needle shorter than the needle (28'
  • the discs (10), (26) and (28) are arranged parallel and coaxially to each other in the border (20) and, as indicated below, at least two of them can rotate relative to this border around the common geometric Y axis of this border and the disks.
  • the part (5) is closed by a transparent circular disc (27) of protection, integral with the border (20) and for example retained by force fitting.
  • the part (5) is closed at the front by a transparent circular protective disc, secured to the border and similarly retained.
  • this front disc can advantageously be one of the discs (26) and (28), when the moving part (4) is driven clockwise, at the speed of 1/12 turn per hour or, respectively, at the speed of 1 revolution per hour.
  • the discs (10), (26) and (28) and the rear disc are transparent, for example in transparent plastic.
  • the movable element (4) and the discs (10) and (28) which can rotate relative to the edge (20) are rotated, respectively with respect to the fixed frame (2), around the fixed central axis X, and by relative to the movable edge (20), around the axis Y integral with the discs (10) and (27), by meshing their toothed outer periphery with a toothed member respective training.
  • the toothed periphery of the movable element (4) is masked by the frame (2) and that of the mobile disks carried by the part (5) is masked by the border (20), so that all the toothed peripheries used for driving the moving part (4), and respectively the discs (10) and (28), are invisible to the observer.
  • the fixed frame (2) forms an outer casing. In the embodiment of Figures 1 to 4, it is formed by an annular part having a U-shaped groove (12) facing the X axis and two flanks (13, 14) masking, on the one hand, a fixed toothed crown (17) with internal toothing and integral with the sidewall (13) and, on the other hand, an annular plate (18) constituting the outer edge of the movable element (4).
  • This plate (18) fixedly carries at its periphery a crown (18 '), with external teeth, driven by a pinion (19) fixed axis which constitutes the output wheel of the motor mechanism housed in the base (1) and which passes through the central cylindrical wall (2 ') of the fixed frame (2) to mesh with the lower part of the crown (18 ').
  • the pinion (19) is of course hidden by the base (1) and by the sides of the fixed frame (2).
  • This plate (18) is extended, towards the X axis, by two spaced walls (30, 31), preferably coplanar with the outer discs, respectively (26) and (27), carried by the part (5).
  • the walls (30, 31) are therefore each cut to advantage inside the perimeter circular a circular window defining the border (20), a window in which the disc (26) and the disc (27) are housed respectively.
  • the border (20) is tangent to the fixed frame (2), but it is understood that it could be located in a different way, away from the fixed frame (2), preferably remaining eccentric relative to the fixed axis X, and therefore to the fixed frame (2), so that the part (5) of time indication moves in time.
  • the part (5) is centered on the axis X, in which case it would be coaxial with the fixed frame (2) and appears globally fixed for the observer, alone the decorative element (6 ') appearing to rotate around the part (5), inside the fixed frame (2).
  • the walls (30, 31), and preferably also the plate (18) which is integral with it and which is advantageously in one piece with they are indifferently transparent or opaque, but preferably transparent.
  • the walls (30, 31) may be free of material except in their connecting part or parts of part (5) with the exterior of element (4).
  • the border (20) is opaque, either due to its thickness, or preferably because it receives, at least at the front, a coating, a trim, an impression or the like, to materialize the outline of the part (5) to indicate the time and to hide the toothed periphery of the discs turns (10, 28) of part (5) and its cooperation with the means training of these.
  • the movable discs of part (5) rest on the bottom of the border (20) or, preferably, are mounted idly on a thin central axis Y integral with the front (10) and rear (27) discs respectively.
  • the walls (30, 31) support a gear train (22) for driving rotating discs.
  • This gear train (22) is hidden for the observer by the decorative element (6 ') which extends from the border (20) up to the visible external contour of the movable element (4).
  • Each wall (30, 31) can be reduced to a simple narrow flange (21) if the part (6), as in the preferred variant shown in Figure 1, is free of material beyond the element (6 ').
  • the gear train (22) is preferably placed in the area of the movable element (4) for which the distance between the edge (20) and the fixed frame (2) is the largest, for reasons of space and installation of the train (22).
  • the train (22) has an input gear (23) which engages by pressing and reacting with the fixed toothed crown (17) which causes in turn a set of intermediate gears (29) leading to at least two output gears (25, 24) respectively driving the toothed disc of dial (10) and the toothed minute disc (28) in the example shown, or in certain variants, as described below, of at least one of the disks toothed minutes (28) and hours (26), or even of these two discs (28) and (26).
  • the pinion (19) drives rotation of the movable element (4) by the crown (18 ') around the X axis, in one direction or in the other, at a predetermined speed.
  • the time indication part (5) therefore generally moves along this continuous rotational movement; it is consequently the same for the dial disc (10). Because the latter must stay in a fixed angular position, ie the line "12 o'clock - 6 o'clock" must remain vertical, the transmission going from the input pinion (19) to the output (25) is calculated so that the speed of rotation of the movable element (4) around its X axis and the speed of rotation of the dial disc (10) around its Y axis have the same numerical value and have opposite signs. So the dial disc (10) generally moves according to a movement geometrically defined as a circular translation, for which the dial disc (10) moves parallel to itself, each of its points rotating around the X axis.
  • the sign and the value of the transmission ratio between the pinion (19) and the disc toothed minutes (28) and / or the toothed hour disc (26) are calculated, usual way for the skilled person, according to the above formula, so that, with respect to the fixed frame (2), and consequently with respect to the observer, the minute disc (28), with its index (28 '), rotates at 1 revolution per hour and the hour disc (26), with its index (26 '), rotates at 1/12 revolution per hour, every two clockwise.
  • the movable element (4) is driven clockwise at a speed angular of 1/12 revolution per hour, so that the hour disc (26) is secured to the edge (20) and therefore does not need to be driven by the train gears (22).
  • the hours disc (26) constitutes advantageously the transparent front disc above protection for the part (5), and the gear train (22) has only two output pinions, at knowing the pinion (25) for holding the dial disc (10) in a fixed angular position, as described above, and the pinion (24) for driving the minute disc (28) so that the latter rotates, with respect to a fixed mark, clockwise 1 turn per hour.
  • This embodiment is preferred because it simplifies the mechanisms, since the hours disc (26) does not need to be driven specially, that it is thus fixed on the part (5) in order to be able to constitute a outer protective disc, and the fact that the movable element (4) can be driven at a slow speed of 1/12 revolution per hour clockwise, which spare the mechanisms.
  • the hours disc (26) could therefore be replaced by a needle secured to the edge (20) or to the Y axis.
  • the movable element (4) could be driven clockwise at a speed of 1 revolution per hour, in which case the minute disc (28) is integral with the border (20) to constitute one of the outer discs above protecting the part (5), preferably the disc front, or could be replaced by a simple needle attached to the border (20) or the Y axis, and the pinion (24) would then drive the hour disc (26) so that this one, relative to a fixed reference, turns around its axis Y in the clockwise at the speed of 1/12 revolution per hour, in a conventional manner, that is to say from 11/12 turn per hour counterclockwise around the Y axis by relative to the border (20).
  • the dial (10) would be driven by its pinion (25) at the speed of 1 revolution per hour, anti-clockwise, in order to again that its line "12 hours - 6 hours" remains permanently vertical.
  • the gear train (22) will include three output gears.
  • the sign and the value of the transmission ratios, as well as the number of output gears of the gear train (22) will be adapted to the reading configuration concerned.
  • this configuration could consist, compared to a fixed reference, in a rotation of the index of hours of 1 turn per 24 hours clockwise, or in a rotation of the dial and / or rotation of the hour and minute indexes counterclockwise.
  • the common main drive gear (19) has 36 teeth and rotates 1 turn per hour counterclockwise.
  • the ring gear (18 ') has 432 teeth, so that the movable element (4) rotates at 1/12 turn per hour clockwise.
  • the toothed crown (17) has 400 teeth, and the dial disc (10) and the minute disc (28) also include 400 teeth, but a module worth half the module of the crown teeth (17).
  • the gear train (22) is established and calculated so that, with respect to the observer, the dial disc (10) remains in a fixed angular position and the minute disc (28) rotates 1 revolution per hour clockwise. For it, as well as the formulas verify, the dial disc (10) must be driven counterclockwise at a speed of 1/12 revolution per hour and the disc of minutes (28) must be driven clockwise at a speed of 11/12 rpm hour.
  • the gear train shown in detail on the Figure 5 allows such drives of the dial disc (10) and the disc minutes (28) via first common pinions (a, b, c, c ', d), followed a chain (e, f) for driving the dial disc (i, 10) and a chain (g, g ', h, h', f ') for driving the minute disc (j, 28).
  • the pinions (a, b, c), a module of 40 also equal to that of the crown (17), of the pinion (19) and crown (18 '), each have 40 teeth while the pinions (c', d, e, f, g ', g, h', h, f '), of a module of 20, have respectively 40, 60, 60, 60, 30, 90, 24, 88 and 60 teeth.
  • the dial disc (i, 10) rotates at the same speed as the movable element (4), i.e.
  • the second drive means are constituted by a toothed crown (17 '), with external teeth, secured to the fixed frame (2), and by a gear train (22 ') carried by the movable element (4) and partly housed in the fixed frame (2) and for part in the border (20), which is substantially tangent to the internal edge (7) of the frame (2).
  • the train (22 ') has input gears (23') meshing with the crown (17 '), intermediate pinions (29') and output pinions (24 ', 25 ') meshing with those of the discs (10, 26, 28) which must be driven.
  • the border (20) is substantially tangent at the inner edge (7) of the frame (2), it is not necessary to hide the train gears (22 ') by a decorative element because it is already hidden by the frame (2) and the border (20).
  • the part (6) of the movable element (4) therefore reduces to a small support plate (18) for the edge (20) and the gear (22 '), the movable element (4) then simply being constituted by the border (20) and the members which it door, the small plate (18) and the crown (18 ').
  • the border (20) could be spaced from the frame (2), in which case the gear (22 ') would include gables located inside the outline of the light (3), which would require a decorative element to hide them, as in Figures 1 to 4.
  • the light (3) is only occupied by the border (20) and the organs it carries.
  • the fixed crown (17, 17 ') is deleted, and it is replaced by at least two floating crowns such that (33) received in a mobile manner and hidden in the fixed frame (2), and toothed internally to cooperate each with the toothed periphery of a disc (10, 26, 28) to train, preferably directly in the tangency zone (8).
  • Each crown (33) is also externally toothed to cooperate, by drive gear, with a lower pinion such as (32) of fixed axis and next to the gable (19).
  • Each pinion (32) is driven from the mechanism motor housed in the base, according to a direction and a speed which depend on the rotation of the mobile assembly (4) controlled by the pinion (19) and the crown (18 ').
  • the second drive means are housed in the base (pinions (32)), in the fixed frame (2) (pinions (32) and crowns (33)) and in the edge of the part (5) (toothed periphery of those of the discs (10, 26, 28) which are to be driven), the decorative element (6 ') is dispensed with and the movable element (4) is completely transparent, except for the border of part (5), the indexes of hours and minutes and the graduation or the like of the dial disc, which further reinforces the surprising and mysterious character of the clock.
  • the movable element (4) can be completely empty or hollow outside the border (20); in this case, this movable element (4) is reduced to the part (5), to the crown (18 ') and a small plate (18), schematically shown, for mounting and connection between the border (20) and the crown (18 ').
  • the border (20) is substantially tangent to the frame fixed (2), in the area (8), the discs (10, 26, 28), or a part of them, mesh directly with the crowns (33), so that the decorative element (6 ') does not exist and that, therefore, part (6) consists only of the crown (18 ') and the small link plate (18).

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  • General Physics & Mathematics (AREA)
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Description

La présente invention se rapporte à une pendule, et plus particulièrement à une pendule dite "mystérieuse" du fait de sa transparence quasi totale.The present invention relates to a pendulum, and more particularly to a so-called "mysterious" clock because of its transparency almost total.

De telles pendules se présentent sous forme d'un cadre fixe présentant une lumière de forme circulaire à l'intérieur de laquelle sont disposés des disques transparents entraínés à leur périphérie.Such pendulums are in the form of a frame fixed with a circular light inside which are arranged transparent disks driven at their periphery.

De telles pendules sont bien connues dans l'état de la technique, et on pourra se référer à titre d'exemple au document FR-A-2.632.426 décrivant une pendule mystérieuse d'un type particulier, à aiguilles extensibles.Such pendulums are well known in the state of technical, and we can refer by way of example to document FR-A-2,632,426 describing a mysterious pendulum of a particular type, with extensible needles.

Dans toutes les pendules mystérieuses de l'état de la technique, la section des disques transparents correspond à la forme et aux dimensions de la lumière de la pendule, de sorte que chaque disque tourne autour de son axe fixe.In all the mysterious clocks of the state of technique, the section of the transparent discs corresponds to the shape and dimensions of the pendulum light, so that each disc rotates around of its fixed axis.

L'objet de la présente invention est de proposer une pendule renforçant l'effet surprenant, par un déplacement des axes des disques ou analogues, tout en conservant une apparente absence de liaison entre les aiguilles ou analogues et le mécanisme moteur d'horlogerie.The object of the present invention is to provide a pendulum reinforcing the surprising effect, by a displacement of the axes of the discs or analogues, while retaining an apparent absence of connection between the needles or the like and the clockwork motor mechanism.

On a déjà proposé, dans des pendules classiques, des agencements permettant de créer des effets surprenants par déplacement de l'axe géométrique de rotation des indicateurs des heures et/ou des minutes ou par un décalage et/ou une suppression partiels des éléments habituels de lecture (cadran, indicateur des heures, indicateur des minutes).We have already proposed, in classic clocks, arrangements for creating surprising effects by displacement of the axis geometric rotation of the hour and / or minute indicators or by a partial offset and / or deletion of the usual reading elements (dial, hour indicator, minute indicator).

Ainsi, dans le document DE-A-2.044.355, il est prévu qu'un disque (ou un anneau) circulaire d'indication des heures ou des minutes, tout en tournant autour de son axe géométrique, peut se déplacer globalement par rapport à un anneau (ou un disque) d'axe fixe suivant un mouvement de roulement sans glissement, par exemple par engrènement, dans lequel ledit axe géométrique décrit un cercle. La lecture de l'heure se fait par appréciation visuelle de la position relative de l'anneau et du disque.Thus, in document DE-A-2,044,355, it is provided that a circular disc (or ring) indicating hours or minutes, while rotating around its geometric axis, can move globally by relation to a ring (or a disc) of fixed axis following a movement of rolling without sliding, for example by meshing, in which said axis geometric describes a circle. Reading the time is done by appreciation visual of the relative position of the ring and the disc.

Comme autre exemple, le document WO-A-94.04965 décrit une pendule comportant un boítier tournant à vitesse constante dans le sens horaire autour d'un axe fixe et portant de manière excentrée un mécanisme classique d'horlogerie commandant la rotation du boítier et celle d'une aiguille d'indication des minutes. Un cadran gradué classique est situé derrière l'aiguille des minutes, et il est lesté pour se maintenir de lui-même par gravité en position angulaire fixe, c'est-à-dire de sorte que la ligne "12 heures - 6 heures" reste toujours verticale. Le boítier comporte un repère ou un index des heures, par exemple constitué par une partie en pointe. La lecture des heures se fait à partir de la position angulaire du boítier par rapport au cadran, et la lecture des minutes se fait, de manière habituelle, à partir de la position de l'aiguille par rapport à ce même cadran situé derrière elle.As another example, document WO-A-94.04965 describes a pendulum comprising a case rotating at constant speed in the clockwise around a fixed axis and eccentrically carrying a mechanism classic watchmaking controlling the rotation of the case and that of a hand minute indication. A classic graduated dial is located behind the needle minutes, and it is weighted down to maintain itself by gravity in position fixed angle, ie so that the line "12 o'clock - 6 o'clock" remains always vertical. The case has a mark or an hour index, for example constituted by a point part. The hours are read from of the angular position of the case relative to the dial, and the reading of the minutes is usually done from the position of the needle relative to this same dial behind it.

Dans ces dispositifs connus, la lecture de l'heure est très malcommode du fait que les indicateurs des heures et des minutes ne sont pas coaxiaux et sont décalés, l'utilisateur devant alors se livrer à une appréciation optique ou visuelle inhabituelle de repérage de la position relative de deux éléments. Au surplus, ces dispositifs ne sont pas applicables aux pendules dites "mystérieuses", du fait que les disques ou indicateurs analogues doivent masquer le mécanisme et ne peuvent donc pas être transparents.In these known devices, the time reading is very inconvenient due to the fact that the hour and minute indicators are not coaxial and are offset, the user then having to make an assessment unusual optical or visual location of the relative position of two elements. In addition, these devices are not applicable to so-called clocks "mysterious" because discs or the like must mask the mechanism and therefore cannot be transparent.

Le but de l'invention est donc de proposer une pendule "mystérieuse" qui, tout en permettant une lecture aisée de l'heure, par coaxialité des indicateurs des heures et des minutes, présente un autre effet surprenant par la mobilité des axes géométriques de rotation de ces indicateurs sur eux-mêmes.The object of the invention is therefore to propose a pendulum "mysterious" which, while allowing an easy reading of the time, by coaxiality hour and minute indicators, presents another surprising effect by the mobility of the geometric axes of rotation of these indicators on themselves.

A cet effet, l'invention propose une pendule dite "mystérieuse" comportant un cadran transparent portant des repères de lecture, un indicateur des minutes, transparent sauf dans la zone d'un index de lecture, et un indicateur des heures, également transparent sauf dans la zone d'un index de lecture, ces indicateurs et cadran présentant un axe géométrique commun Y et étant portés par un cadre ou bordure, et une partie au moins de ces indicateurs et cadran présentant à leur périphérie une denture, masquée par la bordure, pour leur entraínement en rotation par rapport à la bordure autour dudit axe Y, caractérisée en ce qu'elle comporte au surplus :

  • un cadre fixe présentant un axe géométrique fixe X et portant ladite bordure de manière mobile,
  • des premiers moyens d'entraínement, pour entraíner en rotation, autour dudit axe fixe X, ladite bordure et lesdits cadran et indicateurs qu'elle porte, dans un sens et suivant une vitesse angulaire prédéterminés, et
  • des seconds moyens d'entraínement, pour entraíner en rotation, autour dudit axe Y de ladite bordure, une partie au moins desdits cadran, indicateur des minutes et indicateur des heures par leur périphérie pour que lesdits indicateurs tournent l'un par rapport à l'autre et par rapport au cadran pour l'indication instantanée de l'heure du fait de la position angulaire relative desdits indicateurs par rapport audit cadran.
To this end, the invention proposes a so-called "mysterious" pendulum comprising a transparent dial bearing reading marks, a minute indicator, transparent except in the area of a reading index, and an hour indicator, also transparent except in the area of a reading index, these indicators and dial having a common geometrical axis Y and being carried by a frame or border, and at least part of these indicators and dial having at their periphery a toothing, masked by the border , for their rotational drive relative to the edge around said axis Y, characterized in that it further comprises:
  • a fixed frame having a fixed geometric axis X and carrying said border in a mobile manner,
  • first drive means, for driving in rotation, around said fixed axis X, said border and said dial and indicators which it carries, in a direction and at a predetermined angular speed, and
  • second drive means, for driving in rotation, around said axis Y of said border, at least part of said dial, minute indicator and hour indicator by their periphery so that said indicators rotate relative to the other and relative to the dial for instantaneous indication of the time due to the relative angular position of said indicators relative to said dial.

Avantageusement, pour des raisons de simplicité, les seconds moyens d'entraínement sont agencés pour que le cadran reste en position angulaire fixe.Advantageously, for reasons of simplicity, the second drive means are arranged so that the dial remains in position fixed angular.

Par exemple, les seconds moyens d'entraínement coopèrent par engrènement avec une couronne dentée fixe portée par ledit cadre fixe.For example, the second drive means cooperate by meshing with a fixed toothed crown carried by said frame fixed.

Suivant un mode de réalisation préféré, les seconds moyens d'entraínement comportent un train d'engrenages à au moins un pignon d'entrée et au moins deux pignons de sortie coopérant par engrènement respectivement avec cette couronne dentée et la périphérie dentée d'une partie au moins desdits cadran et indicateurs portés par ladite bordure.According to a preferred embodiment, the second drive means include a gear train with at least one pinion input and at least two output pinions cooperating by meshing respectively with this ring gear and the toothed periphery of a part at less of said dial and indicators carried by said border.

Suivant un mode de réalisation, le train d'engrenages s'étend entre la couronne dentée et la périphérie dentée d'une partie au moins desdits cadran et indicateurs, ce train étant porté par un élément mobile supportant fixement la bordure et étant masqué par un élément décoratif.According to one embodiment, the gear train extends between the ring gear and the toothed periphery of at least part said dial and indicators, this train being carried by a mobile element fixedly supporting the border and being hidden by a decorative element.

En variante, la bordure est sensiblement tangente au cadre fixe et le train d'engrenages est porté par un élément mobile supportant fixement la bordure et est logé pour partie à l'intérieur du cadre fixe et pour partie à l'intérieur de la bordure, dans la zone de tangence du cadre fixe et de la bordure.As a variant, the border is substantially tangent to the fixed frame and the gear train is carried by a mobile element supporting fixedly the border and is partly housed inside the fixed frame and for part inside the border, in the tangency zone of the fixed frame and the border.

Suivant un autre mode de réalisation, les seconds moyens d'entraínement comportent au moins deux couronnes dentées flottantes logées dans le cadre fixe et coopérant chacune, d'une part, avec la périphérie dentée de l'un desdits cadran et indicateurs portés par la bordure et, d'autre part, avec un pignon d'entraínement logé dans le cadre fixe.According to another embodiment, the second drive means comprise at least two floating toothed rings housed in the fixed frame and each cooperating, on the one hand, with the periphery tooth of one of said dial and indicators carried by the border and, on the other hand, with a drive gear housed in the fixed frame.

Avantageusement, la pendule comporte un élément mobile comprenant une première partie d'indication de l'heure et une seconde partie masquant une partie desdits seconds moyens d'entraínement et s'étendant depuis ladite première partie jusqu'au contour intérieur du cadre fixe.Advantageously, the pendulum comprises an element mobile comprising a first part for indicating the time and a second part masking part of said second drive means and extending from said first part to the inner contour of the fixed frame.

Dans ce cas, la seconde partie de l'élément mobile est transparente ou exempte de matière, sauf dans une zone masquant ladite partie desdits seconds moyens d'entraínement.In this case, the second part of the movable element is transparent or free of material, except in an area masking said part said second drive means.

Par exemple, lesdits axes géométriques X et Y sont confondus ou distincts, la bordure étant, dans ce dernier cas, tangente au contour intérieur du cadre fixe ou espacée de celui-ci.For example, said geometric axes X and Y are confused or distinct, the border being, in the latter case, tangent to the contour inside the fixed frame or spaced from it.

Suivant un mode de réalisation, la pendule est caractérisée en ce que les premiers moyens d'entraínement sont agencés pour entraíner la bordure et les cadran et indicateurs qu'elle porte dans le sens horaire, pour l'observateur, à une vitesse angulaire de 1/12 tour par heure, en ce que l'indicateur des heures est solidaire de ladite bordure, et en ce que les seconds moyens d'entraínement comportent un pignon de sortie pour l'indicateur des minutes et un pignon de sortie pour le cadran.According to one embodiment, the pendulum is characterized in that the first drive means are arranged for drive the border and the dials and indicators it wears clockwise, for the observer, at an angular speed of 1/12 revolution per hour, in that the hour indicator is integral with said border, and in that the latter drive means include an output gear for the indicator of minutes and an output gear for the dial.

Suivant un autre mode de réalisation, la pendule est caractérisée en ce que les premiers moyens d'entraínement sont agencés pour entraíner la bordure et les cadran et indicateurs qu'elle porte dans le sens horaire, pour l'observateur, à une vitesse angulaire de 1 tour par heure, en ce que l'indicateur des minutes est solidaire de ladite bordure, et en ce que les seconds moyens d'entraínement comportent un pignon de sortie pour l'indicateur des heures et un pignon de sortie pour le cadran.According to another embodiment, the pendulum is characterized in that the first drive means are arranged for drive the border and the dials and indicators it wears clockwise, for the observer, at an angular speed of 1 revolution per hour, in that the minute indicator is integral with said border, and in that the latter drive means include an output gear for the indicator of hours and an output gear for the dial.

D'une manière générale, du point de vue cinématique, les seconds moyens d'entraínement sont agencés pour entraíner en rotation, par rapport à la bordure, l'indicateur des minutes à une vitesse angulaire Vmn, exprimée en tours/heure, l'indicateur des heures à une vitesse angulaire Vh, exprimée en tours/heure, et le cadran à une vitesse angulaire Vc, exprimée en tours/heure, suivant les relations respectives : Vmn = 1 - ε V1 Vh = 1/12 - ε V1 Vc = -ε V1 dans lesquelles V1 est, exprimée en tours/heure, la valeur numérique positive (valeur absolue) de la vitesse angulaire de ladite bordure autour de l'axe X, ε vaut + 1 si la bordure tourne dans le sens horaire et - 1 si elle tourne dans le sens anti-horaire, les vitesses Vmn, Vh et Vc étant positives pour une rotation dans le sens horaire et négatives pour une rotation dans le sens anti-horaire par rapport à la bordure.In general, from the kinematic point of view, the second drive means are arranged to drive in rotation, relative to the edge, the minute indicator at an angular speed V mn , expressed in revolutions / hour, l hour indicator at an angular speed V h , expressed in revolutions / hour, and the dial at an angular speed Vc, expressed in revolutions / hour, according to the respective relationships: V min = 1 - ε V 1 V h = 1/12 - ε V 1 V vs = -ε V 1 in which V 1 is, expressed in revolutions / hour, the positive numerical value (absolute value) of the angular speed of said border around the axis X, ε is + 1 if the border turns clockwise and - 1 if it rotates anti-clockwise, the speeds V min , V h and V c being positive for rotation clockwise and negative for rotation anti-clockwise relative to the edge.

Suivant une réalisation particulière, le cadre fixe présente une lumière circulaire dans laquelle tourne ladite bordure et les cadran et indicateurs qu'elle porte, autour dudit axe fixe X du cadre fixe, la bordure appartenant à un élément mobile s'étendant au moins en partie jusqu'au bord de ladite lumière circulaire, cet élément mobile étant transparent ou exempt de matière à l'extérieur de ladite bordure, sauf dans au moins une zone masquant lesdits premiers et/ou seconds moyens d'entraínement.According to a particular embodiment, the fixed frame has a circular light in which the said border and the dials rotate and indicators that it carries, around said fixed axis X of the fixed frame, the border belonging to a movable element extending at least in part to the edge of said circular light, this movable element being transparent or free of material outside of said border, except in at least one masking area said first and / or second drive means.

Avantageusement, une partie au moins desdits cadran et indicateurs sont constitués par des disques circulaires transparents portant des marquages ou des repères. Dans certains cas, l'un desdits indicateurs peut être constitué par une aiguille indicatrice portée fixement par la bordure. Advantageously, at least part of said dial and indicators consist of transparent circular discs bearing markings or marks. In some cases, one of said indicators may consist of an indicator needle fixedly carried by the border.

L'invention sera mieux comprise à la lecture du complément de description qui va suivre d'exemples non limitatifs de réalisation, et avec référence aux dessins annexés qui font partie de la description et dans lesquels :

  • la Figure 1 représente une vue extérieure de face de la pendule selon un mode de réalisation préféré de l'invention ;
  • la Figure 2 représente une vue de face très schématique de la pendule à deux instants différents espacés de une heure ;
  • la Figure 3 représente une vue de la pendule selon un plan de coupe médian et montre les premiers et les seconds moyens d'entraínement suivant un mode de réalisation ;
  • la Figure 4 représente une vue de la pendule selon le plan de coupe transversal IV - IV de la Figure 3 ;
  • la Figure 5 montre, à plus grande échelle, les seconds moyens d'entraínement de la pendule représentée à la Figure 3 ;
  • la Figure 6 est une vue schématique de face d'une variante ;
  • la Figure 7 montre, à plus grande échelle, une partie de la Figure 6 ;
  • la Figure 8 est une vue de côté de la variante de la Figure 6 ; et
  • la Figure 9 montre schématiquement une autre variante.
The invention will be better understood on reading the additional description which follows of nonlimiting exemplary embodiments, and with reference to the appended drawings which form part of the description and in which:
  • Figure 1 shows an external front view of the pendulum according to a preferred embodiment of the invention;
  • Figure 2 shows a very schematic front view of the pendulum at two different times spaced one hour;
  • Figure 3 shows a view of the pendulum along a median section plane and shows the first and second drive means according to one embodiment;
  • Figure 4 shows a view of the pendulum along the transverse sectional plane IV - IV of Figure 3;
  • Figure 5 shows, on a larger scale, the second drive means of the pendulum shown in Figure 3;
  • Figure 6 is a schematic front view of a variant;
  • Figure 7 shows, on a larger scale, part of Figure 6;
  • Figure 8 is a side view of the variant of Figure 6; and
  • Figure 9 schematically shows another variant.

La Figure 1 représente une vue de face d'un premier exemple de réalisation d'une pendule selon la présente invention. Elle comporte un socle (1) à l'intérieur duquel est logé le mécanisme moteur d'horlogerie. Sur ce socle est monté directement un cadre fixe (2) en forme d'anneau circulaire entourant une lumière (3) de forme également circulaire. A l'intérieur de cette lumière (3) est disposé un équipage ou élément mobile (4) qui comporte une première partie circulaire (5) de lecture ou d'indication de l'heure et une seconde partie (6) supportant au moins un élément décoratif opaque (6'), à savoir une figurine animale dans l'exemple décrit.Figure 1 shows a front view of a first embodiment of a pendulum according to the present invention. It involves a base (1) inside which is housed the clockwork motor mechanism. So base is directly mounted a fixed frame (2) in the form of a circular ring surrounding a light (3) also circular in shape. Inside this light (3) is arranged a moving element or element (4) which comprises a first circular part (5) for reading or indicating the time and a second part (6) supporting at least one opaque decorative element (6 '), namely a animal figurine in the example described.

La première partie (5) comporte une bordure circulaire (20) renfermant et supportant les organes d'indication de l'heure, comme décrit plus loin. Cette partie (5) est totalement transparente, à l'exception de sa bordure (20) et des organes d'indication de l'heure - aiguilles, graduations ou nombres - qui paraissent ainsi suspendus dans le vide. La seconde partie (6) peut compléter par sa forme en croissant ou en anneau la forme circulaire de la partie (5) de l'élément mobile (4), jusqu'au bord intérieur circulaire (7) du cadre fixe (2) ; cette seconde partie est alors de préférence transparente, sauf dans la zone de l'élément décoratif (6') masquant des moyens d'entraínement des organes d'indication de l'heure, comme décrit plus loin, de manière que, pour l'utilisateur, la lumière puisse la traverser sauf dans la zone correspondant à l'élément décoratif (6'). Toutefois, en variante préférée, la partie (6) est exempte de matière sauf dans la zone de l'élément décoratif (6') ; dans cette variante préférée, il existe ainsi deux premiers vides à l'intérieur du cadre (2), de part et d'autre de l'équipage mobile (4), et un troisième vide à l'intérieur de la bordure (20) de la partie circulaire (5) de cet équipage.The first part (5) has a border circular (20) enclosing and supporting the time indication members, as described below. This part (5) is completely transparent, except its border (20) and time indication devices - hands, graduations or numbers - which seem to be hanging in a vacuum. The second part (6) can complete with its crescent or ring shape the circular shape of the part (5) of the movable element (4), up to the circular inner edge (7) of the frame fixed (2); this second part is then preferably transparent, except in the area of the decorative element (6 ') masking means for driving the organs time indication, as described below, so that, for the user, light can pass through it except in the area corresponding to the element decorative (6 '). However, in a preferred variant, the part (6) is free of material except in the area of the decorative element (6 '); in this preferred variant, there are thus two first voids inside the frame (2), on either side of the moving assembly (4), and a third void inside the edge (20) of the circular part (5) of this crew.

L'équipage mobile (4) tourne autour d'un axe fixe X qui est l'axe commun des cercles définissant l'équipage mobile (4) et le bord intérieur (7) du cadre fixe (2) ; à l'extérieur, l'équipage mobile (4) est reçu à l'intérieur du cadre fixe (2) en y pénétrant légèrement dans au moins deux zones (8, 9) diamétralement opposées. Dans l'exemple décrit, la première zone (8) correspond sensiblement au point de tangence de la première partie (5), et la seconde zone (9) correspond à deux points de la seconde partie (6).The moving assembly (4) rotates around a fixed axis X which is the common axis of the circles defining the moving assembly (4) and the edge interior (7) of the fixed frame (2); outside, the moving part (4) is received at the interior of the fixed frame (2) by slightly penetrating it into at least two zones (8, 9) diametrically opposite. In the example described, the first zone (8) corresponds approximately to the point of tangency of the first part (5), and the second zone (9) corresponds to two points of the second part (6).

La bordure circulaire (20) définit le contour extérieur de la partie (5) qui reçoit les organes de lecture et d'indication de l'heure. Ces organes sont de préférence constitués par des disques transparents, à savoir un cadran (10), portant les repères habituels des heures (11) (graduation sur la Figure 1 ou nombres, dont un seul est représenté sur les Figures 2 et 3), un disque des minutes (28) portant un marquage (28'), par exemple en forme d'aiguille radiale, et un disque des heures (26) portant un marquage (26') différent du marquage (28'), par exemple une aiguille radiale plus courte que l'aiguille (28'), et ce de façon habituelle.The circular border (20) defines the outer contour of the part (5) which receives the organs for reading and indicating the time. These organs are preferably constituted by transparent discs, namely a dial (10), bearing the usual hour markers (11) (graduation on the Figure 1 or numbers, only one of which is shown in Figures 2 and 3), a disc minutes (28) marked (28 '), for example in the shape of a needle radial, and an hour disc (26) bearing a marking (26 ') different from the marking (28 '), for example a radial needle shorter than the needle (28'), and this in the usual way.

Les disques (10), (26) et (28) sont disposés parallèlement et coaxialement l'un à l'autre dans la bordure (20) et, comme indiqué ci-après, deux au moins d'entre eux peuvent tourner par rapport à cette bordure autour de l'axe géométrique Y, commun, de cette bordure et des disques. A l'arrière, c'est-à-dire du côté opposé à celui de l'observateur, la partie (5) est fermée par un disque circulaire transparent (27) de protection, solidaire de la bordure (20) et par exemple retenu par emboítement à force. De façon similaire, la partie (5) est fermée à l'avant par un disque circulaire transparent de protection, solidaire de la bordure et retenu de façon analogue. Comme indiqué ci-après, ce disque avant peut être avantageusement l'un des disques (26) et (28), lorsque l'équipage mobile (4) est entraíné dans le sens horaire, à la vitesse de 1/12 tour par heure ou, respectivement, à la vitesse de 1 tour par heure. Ainsi qu'il a été dit, les disques (10), (26) et (28) et le disque arrière sont transparents, par exemple en matière plastique transparente.The discs (10), (26) and (28) are arranged parallel and coaxially to each other in the border (20) and, as indicated below, at least two of them can rotate relative to this border around the common geometric Y axis of this border and the disks. At the rear, i.e. on the side opposite that of the observer, the part (5) is closed by a transparent circular disc (27) of protection, integral with the border (20) and for example retained by force fitting. Similarly, the part (5) is closed at the front by a transparent circular protective disc, secured to the border and similarly retained. As shown below, this front disc can advantageously be one of the discs (26) and (28), when the moving part (4) is driven clockwise, at the speed of 1/12 turn per hour or, respectively, at the speed of 1 revolution per hour. As has been said, the discs (10), (26) and (28) and the rear disc are transparent, for example in transparent plastic.

L'élément mobile (4) et les disques (10) et (28) qui peuvent tourner par rapport à la bordure (20) sont entraínés en rotation, respectivement par rapport au cadre fixe (2), autour de l'axe central fixe X, et par rapport à la bordure mobile (20), autour de l'axe Y solidaire des disques (10) et (27), par engrènement de leur périphérie extérieure dentée avec un organe denté respectif d'entraínement. La périphérie dentée de l'élément mobile (4) est masquée par le cadre (2) et celle des disques mobiles portés par la partie (5) est masquée par la bordure (20), de sorte que toutes les périphéries dentées utilisées pour l'entraínement de l'équipage mobile (4), et respectivement des disques (10) et (28), sont invisibles pour l'observateur.The movable element (4) and the discs (10) and (28) which can rotate relative to the edge (20) are rotated, respectively with respect to the fixed frame (2), around the fixed central axis X, and by relative to the movable edge (20), around the axis Y integral with the discs (10) and (27), by meshing their toothed outer periphery with a toothed member respective training. The toothed periphery of the movable element (4) is masked by the frame (2) and that of the mobile disks carried by the part (5) is masked by the border (20), so that all the toothed peripheries used for driving the moving part (4), and respectively the discs (10) and (28), are invisible to the observer.

Le cadre fixe (2) forme un carter extérieur. Dans le mode de réalisation des Figures 1 à 4, il est formé par une pièce annulaire présentant une gorge (12) en U tournée vers l'axe X et deux flancs (13, 14) masquant, d'une part, une couronne dentée fixe (17) à denture intérieure et solidaire du flanc (13) et, d'autre part, une platine annulaire (18) constituant la bordure extérieure de l'élément mobile (4). Cette platine (18) porte fixement à sa périphérie une couronne (18'), à denture extérieure, entraínée par un pignon (19) d'axe fixe qui constitue la roue de sortie du mécanisme moteur logé dans le socle (1) et qui traverse la paroi cylindrique centrale (2') du cadre fixe (2) pour engrener avec la partie inférieure de la couronne (18'). Le pignon (19) est bien sûr masqué par le socle (1) et par les flancs du cadre fixe (2).The fixed frame (2) forms an outer casing. In the embodiment of Figures 1 to 4, it is formed by an annular part having a U-shaped groove (12) facing the X axis and two flanks (13, 14) masking, on the one hand, a fixed toothed crown (17) with internal toothing and integral with the sidewall (13) and, on the other hand, an annular plate (18) constituting the outer edge of the movable element (4). This plate (18) fixedly carries at its periphery a crown (18 '), with external teeth, driven by a pinion (19) fixed axis which constitutes the output wheel of the motor mechanism housed in the base (1) and which passes through the central cylindrical wall (2 ') of the fixed frame (2) to mesh with the lower part of the crown (18 '). The pinion (19) is of course hidden by the base (1) and by the sides of the fixed frame (2).

Cette platine (18) est prolongée, vers l'axe X, par deux parois espacées (30, 31), de préférence coplanaires aux disques extérieurs, respectivement (26) et (27), portés par la partie (5). Les parois (30, 31) sont donc avantageusememnt chacune découpées pour ménager à l'intérieur du pourtour circulaire une fenêtre circulaire définissant la bordure (20), fenêtre dans laquelle vient se loger le disque (26) et respectivement le disque (27).This plate (18) is extended, towards the X axis, by two spaced walls (30, 31), preferably coplanar with the outer discs, respectively (26) and (27), carried by the part (5). The walls (30, 31) are therefore each cut to advantage inside the perimeter circular a circular window defining the border (20), a window in which the disc (26) and the disc (27) are housed respectively.

Dans l'exemple représenté, la bordure (20) est tangente au cadre fixe (2), mais il est entendu qu'elle pourrait être située de manière différente, à distance du cadre fixe (2), en restant de préférence excentrée par rapport à l'axe fixe X, et donc au cadre fixe (2), pour que la partie (5) d'indication de l'heure se déplace dans le temps. Toutefois, il n'est pas à exclure que, dans une variante, la partie (5) soit centrée sur l'axe X, auquel cas elle serait coaxiale au cadre fixe (2) et apparaítrait globalement fixe pour l'observateur, seul l'élément décoratif (6') semblant tourner autour de la partie (5), à l'intérieur du cadre fixe (2). In the example shown, the border (20) is tangent to the fixed frame (2), but it is understood that it could be located in a different way, away from the fixed frame (2), preferably remaining eccentric relative to the fixed axis X, and therefore to the fixed frame (2), so that the part (5) of time indication moves in time. However, it is not to be excluded that, in a variant, the part (5) is centered on the axis X, in which case it would be coaxial with the fixed frame (2) and appears globally fixed for the observer, alone the decorative element (6 ') appearing to rotate around the part (5), inside the fixed frame (2).

Les parois (30, 31), et de préférence également la platine (18) qui en est solidaire et qui est avantageusement d'une seule pièce avec elles, sont indifféremment transparentes ou opaques, mais de préférence transparentes. Toutefois, les parois (30, 31) peuvent être exemptes de matière sauf dans leur ou leurs parties de liaison de la partie (5) avec l'extérieur de l'élément (4). La bordure (20) est opaque, soit du fait de son épaisseur, soit de préférence du fait qu'elle reçoit, au moins à l'avant, un revêtement, une garniture, une impression ou analogue, pour matérialiser le contour de la partie (5) d'indication de l'heure et pour masquer la périphérie dentée des disques tournants (10, 28) de la partie (5) et sa coopération avec les moyens d'entraínement de ceux-ci. Les disques mobiles de la partie (5) reposent sur le fond de la bordure (20) ou, de préférence, sont montés fous sur un axe central fin Y solidaire des disques respectivement avant (10) et arrière (27).The walls (30, 31), and preferably also the plate (18) which is integral with it and which is advantageously in one piece with they are indifferently transparent or opaque, but preferably transparent. However, the walls (30, 31) may be free of material except in their connecting part or parts of part (5) with the exterior of element (4). The border (20) is opaque, either due to its thickness, or preferably because it receives, at least at the front, a coating, a trim, an impression or the like, to materialize the outline of the part (5) to indicate the time and to hide the toothed periphery of the discs turns (10, 28) of part (5) and its cooperation with the means training of these. The movable discs of part (5) rest on the bottom of the border (20) or, preferably, are mounted idly on a thin central axis Y integral with the front (10) and rear (27) discs respectively.

Les parois (30, 31) supportent un train d'engrenages (22) d'entraínement des disques tournants. Ce train d'engrenages (22) est masqué pour l'observateur par l'élément décoratif (6') qui s'étend depuis la bordure (20) jusqu'au contour extérieur visible de l'élément mobile (4). Chaque paroi (30, 31) peut se réduire à un simple flasque étroit (21) si la partie (6), comme dans la variante préférentielle représentée à la Figure 1, est exempte de matière au-delà de l'élément (6').The walls (30, 31) support a gear train (22) for driving rotating discs. This gear train (22) is hidden for the observer by the decorative element (6 ') which extends from the border (20) up to the visible external contour of the movable element (4). Each wall (30, 31) can be reduced to a simple narrow flange (21) if the part (6), as in the preferred variant shown in Figure 1, is free of material beyond the element (6 ').

Le train d'engrenages (22) est de préférence placé dans la zone de l'élément mobile (4) pour laquelle la distance entre la bordure (20) et le cadre fixe (2) est la plus grande, et ce pour des raisons d'encombrement et de mise en place du train (22).The gear train (22) is preferably placed in the area of the movable element (4) for which the distance between the edge (20) and the fixed frame (2) is the largest, for reasons of space and installation of the train (22).

Le train (22) comporte un pignon d'entrée (23) qui engrène par appui et réaction avec la couronne dentée fixe (17) et qui entraíne à son tour un ensemble de pignons intermédiaires (29) aboutissant à au moins deux pignons de sortie (25, 24) d'entraínement respectivement du disque denté de cadran (10) et du disque denté des minutes (28) dans l'exemple représenté ou, dans certaines variantes, comme décrit ci-après, d'au moins l'un des disques dentés des minutes (28) et des heures (26), voire de ces deux disques (28) et (26).The train (22) has an input gear (23) which engages by pressing and reacting with the fixed toothed crown (17) which causes in turn a set of intermediate gears (29) leading to at least two output gears (25, 24) respectively driving the toothed disc of dial (10) and the toothed minute disc (28) in the example shown, or in certain variants, as described below, of at least one of the disks toothed minutes (28) and hours (26), or even of these two discs (28) and (26).

En fonctionnement, le pignon (19) entraíne en rotation l'élément mobile (4) par la couronne (18') autour de l'axe X, dans un sens ou dans l'autre, à une vitesse prédéterminée. La partie (5) d'indication de l'heure se déplace donc globalement suivant ce mouvement continu de rotation ; il en est par conséquent de même pour le disque cadran (10). Du fait que ce dernier doit rester en position angulaire fixe, c'est-à-dire que la ligne "12 heures - 6 heures" doit rester verticale, la transmission allant du pignon d'entrée (19) au pignon de sortie (25) est calculée pour que la vitesse de rotation de l'élément mobile (4) autour de son axe X et la vitesse de rotation du disque cadran (10) autour de son axe Y aient la même valeur numérique et soient de signes opposés. Ainsi, le disque cadran (10) se déplace globalement suivant un mouvement géométriquement défini comme étant une translation circulaire, pour laquelle le disque cadran (10) se déplace parallèlement à lui-même, chacun de ses points tournant autour de l'axe X.In operation, the pinion (19) drives rotation of the movable element (4) by the crown (18 ') around the X axis, in one direction or in the other, at a predetermined speed. The time indication part (5) therefore generally moves along this continuous rotational movement; it is consequently the same for the dial disc (10). Because the latter must stay in a fixed angular position, ie the line "12 o'clock - 6 o'clock" must remain vertical, the transmission going from the input pinion (19) to the output (25) is calculated so that the speed of rotation of the movable element (4) around its X axis and the speed of rotation of the dial disc (10) around its Y axis have the same numerical value and have opposite signs. So the dial disc (10) generally moves according to a movement geometrically defined as a circular translation, for which the dial disc (10) moves parallel to itself, each of its points rotating around the X axis.

Selon le sens de rotation du pignon (19) et le rapport de transmission entre celui-ci et la couronne dentée (18') de l'élément mobile (4), le signe et la valeur du rapport de transmission entre le pignon (19) et le disque denté des minutes (28) et/ou le disque denté des heures (26) sont calculés, de manière habituelle pour l'homme de métier, selon la formule ci-dessus, pour que, par rapport au cadre fixe (2), et par conséquent par rapport à l'observateur, le disque des minutes (28), avec son index (28'), tourne à 1 tour par heure et le disque des heures (26), avec son index (26'), tourne à 1/12 tour par heure, tous les deux dans le sens horaire.According to the direction of rotation of the pinion (19) and the ratio of transmission between the latter and the ring gear (18 ') of the movable element (4), the sign and the value of the transmission ratio between the pinion (19) and the disc toothed minutes (28) and / or the toothed hour disc (26) are calculated, usual way for the skilled person, according to the above formula, so that, with respect to the fixed frame (2), and consequently with respect to the observer, the minute disc (28), with its index (28 '), rotates at 1 revolution per hour and the hour disc (26), with its index (26 '), rotates at 1/12 revolution per hour, every two clockwise.

Suivant le mode de réalisation préféré représenté sur les dessins, l'élément mobile (4) est entraíné dans le sens horaire à une vitesse angulaire de 1/12 tour par heure, de sorte que le disque des heures (26) est solidaire de la bordure (20) et n'a donc pas besoin d'être entraíné par le train d'engrenages (22). Dans ce cas, le disque des heures (26) constitue avantageusement le disque transparent avant ci-dessus de protection pour la partie (5), et le train d'engrenages (22) ne comporte que deux pignons de sortie, à savoir le pignon (25) de maintien du disque cadran (10) en position angulaire fixe, comme décrit ci-dessus, et le pignon (24) d'entraínement du disque des minutes (28) pour que ce dernier tourne, par rapport à un repère fixe, dans le sens horaire de 1 tour par heure.According to the preferred embodiment shown in the drawings, the movable element (4) is driven clockwise at a speed angular of 1/12 revolution per hour, so that the hour disc (26) is secured to the edge (20) and therefore does not need to be driven by the train gears (22). In this case, the hours disc (26) constitutes advantageously the transparent front disc above protection for the part (5), and the gear train (22) has only two output pinions, at knowing the pinion (25) for holding the dial disc (10) in a fixed angular position, as described above, and the pinion (24) for driving the minute disc (28) so that the latter rotates, with respect to a fixed mark, clockwise 1 turn per hour.

Ce mode de réalisation est préféré car il simplifie les mécanismes, du fait que le disque des heures (26) n'a pas besoin d'être entraíné spécialement, qu'il est ainsi fixe sur la partie (5) pour pouvoir constituer un disque extérieur de protection, et du fait que l'élément mobile (4) peut être entraíné à la vitesse lente de 1/12 tour par heure dans le sens horaire, ce qui ménage les mécanismes. En variante, le disque des heures (26) pourrait donc être remplacé par une aiguille solidaire de la bordure (20) ou de l'axe Y.This embodiment is preferred because it simplifies the mechanisms, since the hours disc (26) does not need to be driven specially, that it is thus fixed on the part (5) in order to be able to constitute a outer protective disc, and the fact that the movable element (4) can be driven at a slow speed of 1/12 revolution per hour clockwise, which spare the mechanisms. Alternatively, the hours disc (26) could therefore be replaced by a needle secured to the edge (20) or to the Y axis.

Suivant une variante, non représentée, mais de même principe que la réalisation ci-dessus décrite, l'élément mobile (4) pourrait être entraíné dans le sens horaire à une vitesse de 1 tour par heure, auquel cas le disque des minutes (28) serait solidaire de la bordure (20) pour constituer l'un des disques extérieurs ci-dessus de protection de la partie (5), de préférence le disque avant, ou pourrait être remplacé par une simple aiguille solidaire de la bordure (20) ou de l'axe Y, et le pignon (24) entraínerait alors le disque des heures (26) pour que celui-ci, par rapport à un repère fixe, tourne autour de son axe Y dans le sens horaire à la vitesse de 1/12 tour par heure, de manière conventionnelle, c'est-à-dire de 11/12 tour par heure dans le sens anti-horaire autour de l'axe Y par rapport à la bordure (20). Dans cette variante, le cadran (10) serait entraíné par son pignon (25) à la vitesse de 1 tour par heure, dans le sens anti-horaire, afin une nouvelle fois que sa ligne "12 heures - 6 heures" demeure en permanence verticale.According to a variant, not shown, but similarly principle that the embodiment described above, the movable element (4) could be driven clockwise at a speed of 1 revolution per hour, in which case the minute disc (28) is integral with the border (20) to constitute one of the outer discs above protecting the part (5), preferably the disc front, or could be replaced by a simple needle attached to the border (20) or the Y axis, and the pinion (24) would then drive the hour disc (26) so that this one, relative to a fixed reference, turns around its axis Y in the clockwise at the speed of 1/12 revolution per hour, in a conventional manner, that is to say from 11/12 turn per hour counterclockwise around the Y axis by relative to the border (20). In this variant, the dial (10) would be driven by its pinion (25) at the speed of 1 revolution per hour, anti-clockwise, in order to again that its line "12 hours - 6 hours" remains permanently vertical.

Dans tous les cas autres que les deux cas ci-dessus, et pour autant que l'on veuille conserver la configuration habituelle de lecture (cadran (10) de position angulaire fixe et index des heures (26') et des minutes (28') tournant dans le sens horaire par rapport à un repère fixe respectivement à 1/12 tour par heure et 1 tour par heure), le train d'engrenages (22) comportera trois pignons de sortie. Selon le sens et la valeur de la vitesse de rotation de l'élément mobile (4), le signe et la valeur des rapports de transmission, ainsi que le nombre de pignons de sortie du train d'engrenage (22), seront adaptés à la configuration de lecture concernée. A titre d'exemples, cette configuration pourrait consister, par rapport à un repère fixe, en une rotation de l'index des heures de 1 tour par 24 heures dans le sens horaire, ou encore en une rotation du cadran et/ou en une rotation des index des heures et des minutes dans le sens anti-horaire.In all cases other than the two above, and as long as we want to keep the usual reading configuration (fixed angular position dial (10) and hour (26 ') and minute index (28 ') rotating clockwise with respect to a fixed mark respectively at 1/12 turn per hour and 1 turn per hour), the gear train (22) will include three output gears. Depending on the direction and the value of the rotation speed of the movable element (4), the sign and the value of the transmission ratios, as well as the number of output gears of the gear train (22), will be adapted to the reading configuration concerned. As examples, this configuration could consist, compared to a fixed reference, in a rotation of the index of hours of 1 turn per 24 hours clockwise, or in a rotation of the dial and / or rotation of the hour and minute indexes counterclockwise.

A titre d'exemple, on donnera ci-après des indications chiffrées pour la mise en oeuvre du mode de réalisation préféré ci-dessus, dans lequel l'élément mobile (4) tourne dans le sens horaire autour de son axe X à la vitesse de 1/12 tour par heure.By way of example, the following are indications encrypted for the implementation of the preferred embodiment above, in which the movable element (4) rotates clockwise around its axis X at the speed of 1/12 revolution per hour.

Le pignon principal commun d'entraínement (19) comporte 36 dents et tourne à 1 tour par heure dans le sens anti-horaire. La couronne dentée (18') comporte 432 dents, de sorte que l'élément mobile (4) tourne à 1/12 tour par heure dans le sens horaire. La couronne dentée (17) comporte 400 dents, et le disque cadran (10) et le disque des minutes (28) comportent également 400 dents, mais d'un module valant la moitié du module des dents de la couronne (17). Le train d'engrenages (22) est établi et calculé pour que, par rapport à l'observateur, le disque cadran (10) reste en position angulaire fixe et que le disque des minutes (28) tourne à 1 tour par heure dans le sens horaire. Pour cela, ainsi d'ailleurs que les formules le vérifie, le disque cadran (10) doit être entraíné dans le sens anti-horaire à la vitesse de 1/12 tour par heure et le disque des minutes (28) doit être entraíné dans le sens horaire à la vitesse de 11/12 tour par heure.The common main drive gear (19) has 36 teeth and rotates 1 turn per hour counterclockwise. The ring gear (18 ') has 432 teeth, so that the movable element (4) rotates at 1/12 turn per hour clockwise. The toothed crown (17) has 400 teeth, and the dial disc (10) and the minute disc (28) also include 400 teeth, but a module worth half the module of the crown teeth (17). The gear train (22) is established and calculated so that, with respect to the observer, the dial disc (10) remains in a fixed angular position and the minute disc (28) rotates 1 revolution per hour clockwise. For it, as well as the formulas verify, the dial disc (10) must be driven counterclockwise at a speed of 1/12 revolution per hour and the disc of minutes (28) must be driven clockwise at a speed of 11/12 rpm hour.

Le train d'engrenages représenté en détail sur la Figure 5 permet de tels entraínements du disque cadran (10) et du disque des minutes (28) par l'intermédiaire de premier pignons (a, b, c, c', d) communs, suivis d'une chaíne (e, f) pour l'entraínement du disque cadran (i, 10) et d'une chaíne (g, g', h, h',f') pour l'entraínement du disque des minutes (j, 28). Les pignons (a, b, c), d'un module de 40, par ailleurs égal à celui de la couronne (17), du pignon (19) et de la couronne (18'), ont chacun 40 dents tandis que les pignons (c', d, e, f, g', g, h', h, f'), d'un module de 20, ont respectivement 40, 60, 60, 60, 30, 90, 24, 88 et 60 dents. Il en résulte bien que le disque cadran (i, 10) tourne à la même vitesse que l'élément mobile (4), soit 1/12 tour par heure, mais dans le sens contraire de l'élément mobile, donc dans le sens anti-horaire, et que le disque des minutes (j, 28) tourne à une vitesse 11 fois supérieure à celle de l'élément mobile (4), soit à 11/12 tour par heure, et dans le sens horaire.The gear train shown in detail on the Figure 5 allows such drives of the dial disc (10) and the disc minutes (28) via first common pinions (a, b, c, c ', d), followed a chain (e, f) for driving the dial disc (i, 10) and a chain (g, g ', h, h', f ') for driving the minute disc (j, 28). The pinions (a, b, c), a module of 40, also equal to that of the crown (17), of the pinion (19) and crown (18 '), each have 40 teeth while the pinions (c', d, e, f, g ', g, h', h, f '), of a module of 20, have respectively 40, 60, 60, 60, 30, 90, 24, 88 and 60 teeth. As a result, the dial disc (i, 10) rotates at the same speed as the movable element (4), i.e. 1/12 revolution per hour, but in the opposite direction to the movable element, so counterclockwise, and that the minute disc (j, 28) rotates at a speed 11 times that of the movable element (4), i.e. 11/12 turn per hour, and clockwise.

Dans la variante selon laquelle l'élément mobile est entraíné à une vitesse de 1/12 tour par heure dans le sens anti-horaire, il faut alors prévoir, par application des formules des entraínements du disque cadran (10), du disque des heures (26) et du disque des minutes (28), un train d'engrenages tel que le disque cadran tourne à 1/12 tour par heure dans le sens horaire, que le disque des minutes tourne à 13/12 tour par heure dans le sens horaire, et ce afin de corriger les rotations de 1/12 tour dans le sens anti-horaire créées sur ces deux disques du fait de l'entraínement de l'élément mobile dont lesdits disques sont solidaires, et que le disque des heures tourne à 2/12 tour par heure également dans le sens horaire. Autrement dit, dans cette variante, le disque des heures ne peut pas, comme dans l'exemple précédent, être fixé sur la partie mobile (5) et constituer simultanément un disque extérieur de protection de cette partie mobile. Il faut cette fois que le train d'engrenages (22) comporte trois pignons de sortie et que les dents du troisième pignon soient associées à celles dont est alors doté le disque des heures (26) en sorte que ce disque soit entraíné à la vitesse de 2/12 tour par heure dans le sens horaire. Cette construction est évidemment plus complexe que celle prévue dans la variante dans laquelle l'élément mobile (4) est entraíné à une vitesse de 1/12 tour par heure dans le sens horaire (trois entraínements au lieu de deux) et en outre il faut prévoir un disque supplémentaire pour la protection extérieure de la partie (5).In the variant according to which the movable element is driven at a speed of 1/12 revolution per hour anti-clockwise, it is necessary then predict, by applying the dial disc drive formulas (10), the hour disc (26) and the minute disc (28), a train gears such that the dial disc rotates 1/12 turn per hour in the direction clockwise, that the minute disc rotates 13/12 revolutions per hour clockwise clockwise, to correct the 1/12 turn counterclockwise created on these two discs due to the drive of the mobile element which said discs are integral, and the hour disc rotates 2/12 turn by also clockwise. In other words, in this variant, the hour disc cannot, as in the previous example, be attached to the mobile part (5) and simultaneously constitute an external protective disc of this moving part. This time the gear train (22) has three output pinions and the teeth of the third pinion are associated with those with which the hours disc (26) is then fitted so that this disc is driven at a speed of 2/12 revolutions per hour clockwise. This construction is obviously more complex than that planned in the variant in which the movable element (4) is driven at a speed of 1/12 revolution per clockwise (three workouts instead of two) and moreover provide an additional disc for the external protection of the part (5).

On a schématiquement représenté sur les Figures 6 à 8 une variante de réalisation pour les seconds moyens d'entraínement. Selon cette variante, les seconds moyens moteurs sont constitués par une couronne dentée (17'), à denture extérieure, solidaire du cadre fixe (2), et par un train d'engrenages (22') porté par l'élément mobile (4) et logé pour partie dans le cadre fixe (2) et pour partie dans la bordure (20), laquelle est sensiblement tangente au bord intérieur (7) du cadre (2). Le train (22') comporte des pignons d'entrée (23') engrenant avec la couronne (17'), des pignons intermédiaires (29') et des pignons de sortie (24', 25') engrenant avec ceux des disques (10, 26, 28) qui doivent être entraínés.Schematically shown in Figures 6 to 8 an alternative embodiment for the second drive means. According to this variant, the second drive means are constituted by a toothed crown (17 '), with external teeth, secured to the fixed frame (2), and by a gear train (22 ') carried by the movable element (4) and partly housed in the fixed frame (2) and for part in the border (20), which is substantially tangent to the internal edge (7) of the frame (2). The train (22 ') has input gears (23') meshing with the crown (17 '), intermediate pinions (29') and output pinions (24 ', 25 ') meshing with those of the discs (10, 26, 28) which must be driven.

Du fait que la bordure (20) est sensiblement tangente au bord intérieur (7) du cadre (2), il n'est pas nécessaire de masquer le train d'engrenages (22') par un élément décoratif car il est déjà caché par le cadre (2) et la bordure (20). La partie (6) de l'élément mobile (4) se réduit donc à une petite platine (18) de support de la bordure (20) et de l'engrenage (22'), l'élément mobile (4) étant alors simplement constitué par la bordure (20) et les organes qu'elle porte, la petite platine (18) et la couronne (18'). En variante, la bordure (20) pourrait être espacée du cadre (2), auquel cas l'engrenage (22') comporterait des pignons situés à l'intérieur du contour de la lumière (3), ce qui nécessiterait un élément décoratif pour les masquer, comme dans les Figures 1 à 4. En cas de tangence de la bordure (20), la lumière (3) n'est occupée que par la bordure (20) et les organes qu'elle porte.Because the border (20) is substantially tangent at the inner edge (7) of the frame (2), it is not necessary to hide the train gears (22 ') by a decorative element because it is already hidden by the frame (2) and the border (20). The part (6) of the movable element (4) therefore reduces to a small support plate (18) for the edge (20) and the gear (22 '), the movable element (4) then simply being constituted by the border (20) and the members which it door, the small plate (18) and the crown (18 '). As a variant, the border (20) could be spaced from the frame (2), in which case the gear (22 ') would include gables located inside the outline of the light (3), which would require a decorative element to hide them, as in Figures 1 to 4. In case of tangency of the border (20), the light (3) is only occupied by the border (20) and the organs it carries.

On a schématiquement représenté sur la Figure 9 une variante intéressante pour les seconds moyens d'entraínement commandant la rotation d'une partie au moins des disques (10, 26, 28) portés sur la bordure (20).Schematically shown in Figure 9 a interesting variant for the second drive means controlling the rotation of at least part of the discs (10, 26, 28) carried on the edge (20).

Selon cette variante, la couronne fixe (17, 17') est supprimée, et elle est remplacée par au moins deux couronnes flottantes telles que (33) reçues de manière mobile et masquées dans le cadre fixe (2), et dentées intérieurement pour coopérer chacune avec la périphérie dentée d'un disque (10, 26, 28) à entraíner, de préférence directement dans la zone de tangence (8). Chaque couronne (33) est également dentée extérieurement pour coopérer, par engrènement d'entraínement, avec un pignon inférieur tel que (32) d'axe fixe et voisin du pignon (19). Chaque pignon (32) est entraíné, à partir du mécanisme moteur logé dans le socle, suivant un sens et une vitesse qui dépendent de la rotation de l'ensemble mobile (4) commandée par le pignon (19) et la couronne (18').According to this variant, the fixed crown (17, 17 ') is deleted, and it is replaced by at least two floating crowns such that (33) received in a mobile manner and hidden in the fixed frame (2), and toothed internally to cooperate each with the toothed periphery of a disc (10, 26, 28) to train, preferably directly in the tangency zone (8). Each crown (33) is also externally toothed to cooperate, by drive gear, with a lower pinion such as (32) of fixed axis and next to the gable (19). Each pinion (32) is driven from the mechanism motor housed in the base, according to a direction and a speed which depend on the rotation of the mobile assembly (4) controlled by the pinion (19) and the crown (18 ').

Dans cette variante, du fait que, comme dans les Figures 6 à 8, les seconds moyens moteurs sont logés dans le socle (pignons (32)), dans le cadre fixe (2) (pignons (32) et couronnes (33)) et dans la bordure de la partie (5) (périphérie dentée de ceux des disques (10, 26, 28) qui sont à entraíner), on se dispense de l'élément décoratif (6') et l'élément mobile (4) est totalement transparent, sauf en ce qui concerne la bordure de la partie (5), les index des heures et des minutes et la graduation ou analogue du disque de cadran, ce qui renforce encore le caractère surprenant et mystérieux de la pendule. En variante, l'élément mobile (4) peut être totalement vide ou creux à l'extérieur de la bordure (20) ; dans ce cas, cet élément mobile (4) se réduit à la partie (5), à la couronne (18') et à une petite platine (18), schématiquement représentée, de montage et de liaison entre la bordure (20) et la couronne (18').In this variant, since, as in the Figures 6 to 8, the second drive means are housed in the base (pinions (32)), in the fixed frame (2) (pinions (32) and crowns (33)) and in the edge of the part (5) (toothed periphery of those of the discs (10, 26, 28) which are to be driven), the decorative element (6 ') is dispensed with and the movable element (4) is completely transparent, except for the border of part (5), the indexes of hours and minutes and the graduation or the like of the dial disc, which further reinforces the surprising and mysterious character of the clock. Alternatively, the movable element (4) can be completely empty or hollow outside the border (20); in this case, this movable element (4) is reduced to the part (5), to the crown (18 ') and a small plate (18), schematically shown, for mounting and connection between the border (20) and the crown (18 ').

Si la bordure (20) est sensiblement tangente au cadre fixe (2), dans la zone (8), les disques (10, 26, 28), ou une partie d'entre eux, engrènent directement avec les couronnes (33), de sorte que l'élément décoratif (6') n'existe pas et que, par conséquent, la partie (6) est constituée seulement par la couronne (18') et la petite platine de liaison (18).If the border (20) is substantially tangent to the frame fixed (2), in the area (8), the discs (10, 26, 28), or a part of them, mesh directly with the crowns (33), so that the decorative element (6 ') does not exist and that, therefore, part (6) consists only of the crown (18 ') and the small link plate (18).

Au contraire, si la bordure n'est pas tangente au cadre (2), c'est-à-dire si elle est située à distance du bord intérieur (7) du cadre (2), une partie au moins des disques (10, 26, 28) coopèrent avec les couronnes (33) par l'intermédiaire d'au moins un pignon porté par la platine (18) ; ces pignons intermédiaires sont alors masqués par un élément décoratif porté par la face avant de la partie (18), comme dans les Figures 1 à 4.On the contrary, if the border is not tangent to the frame (2), that is to say if it is located at a distance from the inner edge (7) of the frame (2), a at least part of the discs (10, 26, 28) cooperate with the crowns (33) by the intermediary of at least one pinion carried by the plate (18); these gables intermediaries are then masked by a decorative element carried by the face front of the part (18), as in Figures 1 to 4.

L'invention est décrite dans ce qui précède à titre d'exemples non limitatifs. Il est bien entendu que l'homme de métier sera à même de réaliser de nombreuses variantes sans pour autant sortir du cadre de l'invention tel que défini par les revendications qui suivent. Par exemple, par application des mêmes principes que ceux précédemment décrits, il est possible de prévoir une lecture des secondes, avec alors l'addition d'un disque denté, permettant le repérage des secondes, et d'un entraínement spécifique à ce disque supplémentaire.The invention is described in the foregoing by way of non-limiting examples. It is understood that the skilled person will be able to to carry out numerous variants without departing from the scope of the invention as defined by the claims which follow. For example, by application of the same principles as those previously described, it is possible to provide a reading of the seconds, with the addition of a toothed disc, allowing the location of seconds, and a specific drive for this disc additional.

Claims (16)

  1. A clock, called a "mystery" clock because of its almost totally transparent nature, comprising a transparent dial (10) bearing reference markers (11), a minute indicator (28), transparent except in the area of a reading pointer (28') and an hour indicator (26), also transparent except in the area of a reading pointer (26'), indicators and dial having a common geometric axis (Y) and being carried by a frame or surround (20) and at least part of these indicators and dial having teeth at their periphery, masked by the surround (20), for driving them in rotation in relation to the surround (20) about said axis (Y) characterised in that it also includes:
    a fixed frame (2) having a fixed geometric axis (X) and movingly carrying said surround (20).
    first driving means (19, 18') for rotating said surround (20) and said dial and indicators which it carries, about said axis (X), in a pre-determined direction and at a predetermined angular speed and
    second driving means (17,22, 17',22', 32,33) for rotating a part at least of said dial (10), minute indicator (28) and hour indicator (26) by their periphery in rotation about said axis (Y) of said surround (20), in order that said indicators (26,28) turn, one in relation to the other and relative to the dial (10), for instantaneous indication of the time due to the relative angular position of said indicators in relation to said dial.
  2. A clock as claimed in Claim 1, characterised in that the second driving means are arranged so that the dial (10) remains in a fixed angular position.
  3. A clock according to 1 of Claims 1 and 2, characterised in that the second driving means co-operate, by gearing, with a fixed, toothed annular ring (17,17') carried by said fixed frame (2).
  4. A clock according to Claim 3, characterised in that the second driving means comprise a gear train (22,22') and at least one input gear wheel (23) and at least two output gear wheels (24, 25, 24',25') co-operating via by gearing respectively with the toothed annular ring (17,17') and the toothed periphery of at least part of said dial and indicators (10,26,28) carried by said surround (20).
  5. A clock according to Claim 4, characterised in that the gear train of (22) extends between the toothed annular ring (17) and the toothed periphery of at least a part of said dial and indicators (10, 26, 28), this train being carried by a moving element (4) fixedly supporting the surround (20) and being masked by a decorative element (6').
  6. A clock according to Claim 4, characterised in that the surround (20) is substantially tangential to the fixed frame (2) and in that the gear train (22') is carried by a moving element (4) fixedly supporting the surround (20) and is partially accommodated within the fixed frame (2) and partially within the surround (20) in the tangential area (8) of the fixed frame (2) and of the surround (20).
  7. A clock according to one of Claims 1 and 2, characterised in that the second driving means include at least two floating, toothed annular rings (33) accommodated within the fixed frame (2) and each co-operating, on the one hand, with the toothed periphery of one of said dial and indicators (10, 26, 28) carried by the surround (20) and, on the other hand, with a driving gear (32) accommodated in the fixed frame (2).
  8. A clock according to one of Claims 1 to 7, characterised in that it includes a moving element (4) including a first part (5) for indicating the time and a second part (6) masking a part (22) of said second driving means (17, 22) and extending from said first part (5) as far as the inner contour (7) of the fixed frame (2).
  9. A clock according to Claim 8, characterised in that said second part (6) of the moving element (4) is transparent or free of matter except in an area (6') masking said part (22) of the second driving means.
  10. A clock according to one of Claims 1 and 9, characterised in that said geometric axes (X) and (Y) are the same or different, the surround (20) being in the latter case tangential to the inner contour (7) of the fixed frame (2) or spaced from the latter.
  11. A clock according to one of Claims 1 to 10, characterised in that the first driving means (19, 18') are arranged so as to drive the surround (20) and the dial and indicators which it carries in a clockwise direction, from the observer's point of view, at an angular speed of 1/12th of a revolution per hour, in that the hour indicator (26) is integrated with said surround (20) and in that the second driving means include an output gear wheel (24) for the minute indicator (28) and an output gear wheel (25) for the dial (10).
  12. A clock according to one of Claims 1 to 10, characterised in that the first driving means are arranged so as to move the surround (20) and the dial and indicators which it carries in a clockwise direction, from the observer's point of view, at an angular speed of one revolution per hour, in that the minute indicator (28) is integrated with said surround (20) and in that the second driving means includes an output gear wheel (24) for the hour indicator (26) and an output gear wheel (25) for the dial (10).
  13. A clock according to one of Claims 1 to 12, characterised in that the second driving means (17, 22; 17', 22'; 32,33) are arranged to rotate the minute indicator (28), in relation to the surround (20) at an angular speed (Vmn) expressed in revolutions per hour, the hour indicator (26) at an angular speed (Vh) expressed in revolutions per hour and the dial (10) at an angular speed (Vc) expressed in revolutions per hour, according to the following ratios: Vmn = 1 - eV1 Vh = 1/12 - eV1 Vc = - e V1 in which V1 is, expressed in revolutions per hour, the positive numeric value (absolute value) of the angular speed of said surround (20) about the axis (X), e has a value of + 1 if the surround (20) turns in a clockwise direction and of - 1 if it turns in an anti-clockwise direction, the speeds Vmn, Vh and Vc being positive for a clockwise rotation and negative for an anti-clockwise rotation in relation to the surround (20).
  14. A clock according to one of Claims 1 to 13, characterised in that the fixed frame (2) displays a circular opening (3) in which said surround (20) and the dial and indicators which it carries, turn about said fixed axis (X) of the fixed frame (2), the surround (20) being part of a moving element (4) extending at least partially to the edge of said circular opening, this moving element (4) being transparent or free of matter outside said surround (20), except in at least one area (6') masking said first and or second driving means.
  15. A clock according to one of Claims 1 to 14, characterised in that at least one part of said dial and indicators (10, 26, 28) consist of transparent circular disks bearing markings or reference markers.
  16. A clock according to one of Claims 1 to 15, characterised in that one of said indicators is formed by an indication pointer carried fixedly by the surround (20).
EP96931872A 1995-09-18 1996-09-18 Mystery clock Expired - Lifetime EP0791191B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9510912A FR2741967B1 (en) 1995-09-18 1995-09-18 PENDULUM "MYSTERIOUS" SAID GIRATORY
FR9510912 1995-09-18
PCT/FR1996/001454 WO1997011412A1 (en) 1995-09-18 1996-09-18 Mystery clock

Publications (2)

Publication Number Publication Date
EP0791191A1 EP0791191A1 (en) 1997-08-27
EP0791191B1 true EP0791191B1 (en) 2000-03-29

Family

ID=9482650

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96931872A Expired - Lifetime EP0791191B1 (en) 1995-09-18 1996-09-18 Mystery clock

Country Status (8)

Country Link
US (1) US5878003A (en)
EP (1) EP0791191B1 (en)
JP (1) JPH10509520A (en)
CN (1) CN1166882A (en)
AU (1) AU7088796A (en)
DE (1) DE69607455D1 (en)
FR (1) FR2741967B1 (en)
WO (1) WO1997011412A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2351163A (en) * 1999-06-15 2000-12-20 John Stephen Hughes Timepiece with alterable appearance
US6595683B1 (en) * 2002-09-10 2003-07-22 Carl Cetera Self-righting, variable-orientation display assembly
EP1607807B1 (en) * 2004-06-15 2007-12-05 ETA SA Manufacture Horlogère Suisse Watch with special esthetic effects
JP4548805B2 (en) * 2006-03-30 2010-09-22 カンタン エスア Compensation device for the synergistic effect of watches called mysteries
US7665888B2 (en) * 2006-04-29 2010-02-23 Marc Chase Weinstein Tabletop device with two-sided instructional display
US7568831B2 (en) 2006-10-06 2009-08-04 Tiffany & Co. Watch Center Ag Tourbillion-type timepiece movement
CH705910B1 (en) * 2011-12-16 2024-07-15 Ali&Co Geneve Sa Mysterious reversible watch.
EP3620865B1 (en) * 2018-09-05 2021-02-24 The Swatch Group Research and Development Ltd Mechanical or electromechanical timepiece with mysterious drive mechanism

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2466312A (en) * 1945-01-29 1949-04-05 Jack & Heintz Prec Ind Inc Transparent disk clock
US2749904A (en) * 1952-02-18 1956-06-12 Motor Wheel Corp Forced air flow air heating furnace
US2749704A (en) * 1953-10-30 1956-06-12 Heikkila Pentti Electric clock time indicating device
FR2034632B1 (en) * 1969-03-04 1974-06-14 Hartwig Rudiger
DE2044355B2 (en) * 1970-09-08 1972-03-23 Scholer, Eckhard, Dr , 2000 Hamburg DEVICE FOR DISPLAYING THE TIME IN HOURS AND MINUTES
DE8620030U1 (en) * 1986-07-25 1987-11-19 Backes, Michael, 8000 München Clock
FR2632426B1 (en) * 1988-06-01 1991-12-13 Brun Pierre G MYSTERIOUS PENDULUM WITH EXTENSIBLE NEEDLES AND DEVICE FOR DRIVING AN EXTENSIBLE NEEDLE
CH676074GA3 (en) * 1989-02-21 1990-12-14 Indicator for analogue watch - includes small minute pointer which moves as satellite around hours dial indicating hour of day
EP0656132B1 (en) * 1992-08-22 1997-01-08 Frank Ebert Clock
US5297121A (en) * 1992-10-14 1994-03-22 Sepehri Seyyed S Eccentric mounted watch
US5349572A (en) * 1993-05-10 1994-09-20 Jaroslay Belik Clock dial
DE4330895A1 (en) * 1993-09-11 1995-03-16 Konrad Dr Bergmann Timepiece having rotating display elements
US5349512A (en) * 1993-12-10 1994-09-20 Parker David H Electrical lantern with multiple position connecting handle

Also Published As

Publication number Publication date
FR2741967A1 (en) 1997-06-06
CN1166882A (en) 1997-12-03
WO1997011412A1 (en) 1997-03-27
AU7088796A (en) 1997-04-09
JPH10509520A (en) 1998-09-14
FR2741967B1 (en) 1998-02-20
DE69607455D1 (en) 2000-05-04
US5878003A (en) 1999-03-02
EP0791191A1 (en) 1997-08-27

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