Abstract: A twisted arbour barrel (1), including a barrel drum (2) provided with a housing, a spring arranged in the housing of the barrel drum (2), an arbour (4) at least partially passing through the housing, the spring being compressed by rotation of the arbour in a first direction of rotation (12), the arbour (4) being provided with a protruding end (9) of the drum (2), a ratchet (3) arranged on the drum (2), the ratchet (3) being configured to allow the rotation of the arbour (4) in the first direction of rotation (12), the protruding end (9) passing through the ratchet (3) through an opening (14) cooperating by interlocking with the protruding end (9), the protruding end (9) of the arbour (4) having a twisted shape around its axis.

Abstract: A universal device is for preparation of a watch with a gain/loss correction crown and an oscillating resonator. The device includes winding and a gain/loss corrector with a robotic manipulator for manoeuvring the crown. It also includes an adjustment device with a gain/loss correction device including a gain/loss-corrector oscillator generating an oscillation to subject the watch to an oscillation at a correction frequency NC and/or to a modulated movement. The gain/loss correction device includes a gain/loss controller that controls the oscillation of the gain/loss-corrector oscillator, interfaced with a device to measure the gain/loss of the watch. The gain/loss correction device also includes an automatic winder with a watch-holder stand subjected to the oscillations or movements generated by the gain/loss-corrector oscillator.

Abstract: A presentation case is arranged for receiving an electromechanical watch provided with a stepping motor for driving the watch hands. The presentation case includes a box with a support for receiving the watch, a system for detecting the position of the hands, and a device for resetting the watch connected to the hand position detection system. The resetting device resets the watch based on information received from the hand position detection system and a time reference when the watch is placed on the receiving support. The resetting device includes a driver for the stepping motor of the electromechanical watch, which is arranged inside the presentation case facing the stepping motor, when the watch is placed on the receiving support, and causes a rotation of the stepping motor by inductive coupling.

Abstract: A method for adjusting the rate of a watch with an oscillator arranged to generate oscillation at a nominal frequency N0, with a servo-system including a master oscillator arranged to generate excitation oscillation at an excitation frequency NE, which is approximately equal to, or equal to the nominal frequency N0, or to an integer multiple of this nominal frequency N0, the watch is subjected to excitation oscillation or to a modulated motion, generated by the master oscillator, during a transition phase after which the oscillator of the watch is stabilised at excitation frequency NE, and there is incorporated in the servo-system a winder for mechanical or automatic watches, arranged to move a support on which such a watch is fixed.

Abstract: Timepiece regulating mechanism including an energy storage means delivering an output torque (CS), via a train (3), to a wheel set (4) forming a magnetic escapement mechanism (10) with a resonator wheel set (5) subjected to the torque from a return means (6) and cooperating therewith, either directly or via a magnetic stop member (7), this magnetic escapement mechanism (10) being arranged to operate when the wheel set (4) receives a torque higher than or equal to a maintenance torque (CE), and the train (3) includes a torque regulating means (30) arranged to deliver to the wheel set (4) a constant torque comprised between 1.0 and 2.0 times the maintenance torque (CE), the torque regulating means (30) including a fusee (8) of continuously variable cross-section, from which unwinds a chain (9), wound by a drum (21), directly or indirectly driven by the energy storage means (2).

Abstract: A watch crown assembly has a body configured to receive rotary input. The body defines a recess and a retention feature. The watch crown assembly further comprises a ceramic member positioned at least partially in the recess and a mounting arm attached to the ceramic member. The mounting arm is engaged with the retention feature of the body, thereby retaining the ceramic member to the body.

Abstract: A timepiece barrel for pivotal assembly between a plate and a bar and including at least one spring housed between a pivoting drum and a cover and hooked between, at the outer end thereof, the drum and at the inner end thereof, an arbor which pivots integrally with a ratchet about a pivot axis. The barrel includes a one-piece sub-assembly coaxial to the arbor and including the arbor and a boss including a collar for limiting axial shake of the drum, the collar carrying pivotal drive mechanisms for driving pivoting of the ratchet which is axially free in a direction of the pivot axis.

Abstract: The winding device includes a solar pinion mounted for free rotation in a coaxial manner about a central arbor on a winding wheel. The device also includes toothed planetary wheels for meshing with a toothing of the solar pinion. The planetary wheels are mounted for free rotation with play about a respective offset arbor fixed to the winding wheel. The device also includes one or two hooks of a frame fixedly mounted on the winding wheel. In a first direction of rotation of the solar pinion, a planetary wheel is in a locking position in contact with a hook in order to drive the winding wheel. In a second direction of rotation opposite to the first direction of rotation, the planetary wheel is uncoupled so that the rotation of the solar pinion does not drive the winding wheel.

Abstract: A power consumption control device includes a power consumption control unit that receives the output potential of a photovoltaic cell generating an electromotive force, receives the output potential of a secondary battery charged by the electromotive force of the photovoltaic cell, causes a timepiece device to transition to a power saving state where a clock operation of measuring time is stopped when the output potential difference of the secondary battery is not greater than a predetermined threshold value, and the secondary battery is in a non-charging state indicating a state where the output potential difference of the photovoltaic cell is not greater than the output potential difference of the secondary battery.

Abstract: Watch movement of a mechanical or automatic watch comprising an indicator device for the power reserve which is configured to enable the power reserve to be indicated on demand. The device includes means to produce an acoustic signal that indicates the amplitude of the power reserve when said means are actuated.

Abstract: A watch winder includes a housing, a power supply disposed in the housing, a transmitter coil mounted at one side of the housing and electrically connected with a circuit board of the power supply, and a receiver coil mounted at another side of the housing and electrically connected with a circuit board of the power supply. The fist coil can be actuated by the power supply to transmit a signal, and the receiver coil can be used to receive a signal and convert the signal into an electrical current that can be transmitted to the circuit board for charging the power supply. Therefore, the electrical energy of the watch winder can be wireless transmitted through a non-contact interface.

Abstract: The invention concerns a mechanical device (100) for the sequential control of at least two levers for a timepiece mechanism, controlling a first lever (1) and a second (2) lever cooperating with a contact surface (10) in accordance with a sequence wherein each changes from a first torque consumption level (11; 21) to a second, higher level (12; 22) during an increasing phase (14; 24) in which it stores torque, then from said second level (12; 22) to said first level (11; 21) during a decreasing phase (15; 25) in which it transmits energy. The device is wherein it includes delaying means (4) creating, during the decreasing phase (15) of said first lever (1), a stabilizing stage at a third, intermediate level (13) between said first (11) and second (12) levels. The invention also concerns a timepiece incorporating a device (100) of this type.

Abstract: The invention relates to a multifunctional case that is suitable for winding an automatic or manual watch having one or more displays, the case includes a box having a removable support designed to hold the watch; a winding mechanism intended to wind the watch when the latter is arranged on the removable support; the multifunctional case also having an adjusting mechanism suitable for adjusting said one or more displays. This solution has in particular the advantage over the prior art of keeping the watch on time when it is arranged in the case.

Abstract: A mechanical watch comprises a motive spring in a first spring barrel and a mechanical and/or automatic winding device. A second spring barrel and a differential having three drive trains are provided, wherein the train connected to the winding device acts on the first and second spring barrels in the same direction.

Abstract: Provided is the assembly of a watch winder with a moveable attention-attracting mechanism driven from the motor of the watch winder through a transmission mechanism. The attention-attracting mechanism comprises a multilink mechanism that includes a device in the form of a human being, wherein the first link is formed as hands, the second link as a body, and the base support as legs. Rotation of the crank may be further transmitted to another attention-attracting mechanism that is formed as a Ferris wheel. According to the second modification, the multilink mechanism is formed as an oil-extracting pump.

Abstract: A switch device of the present invention includes a rotating operation member in which a through-hole is formed in an axial direction; a pressing operation member which is movable within the through-hole of the rotating operation member and press-operable from one opening of the through-hole that is provided so as to not slip out of the one opening and integrally rotates with the rotating operation member, when rotating the rotating operation member; a first coil spring which is arranged within the through-hole of the rotating operation member and biases the pressing operation member towards the one opening direction; and a second coil spring which is arranged within the through-hole of the rotating operation member and biases the rotating operation member towards the one opening direction.

Abstract: A unidirectional coupling-clutch runner includes a coaxial pinion and wheel which pivot relative to one another. The runner includes a first driving part angularly integral with the pinion having at least one elastic catch with the general shape, in plan view, of a C, one branch of which is elongated and terminates with a free end; and a second driving part angularly integral with the wheel and which is coplanar with the first driving part having an internal wolf-toothing. In the neutral rest position the first and second driving parts do not touch one another, the end of the elastic catches in the rest position which are not elastically deformed being located on a circumference whose diameter is larger than a circumference which goes through the top of the wolf-teeth and smaller than a circumference going through the bottom of the toothing of the second driving part.

Abstract: Provided is the assembly of a watch winder with a moveable attention-attracting mechanism driven from the motor of the watch winder through a transmission mechanism. According to one modification, the attention-attracting mechanism comprises a multilink mechanism composed of a crank driven into rotation from the watch winder through pulleys and driving belt and pivotally connected to a first link, the other end of which is connected to one end of the second link. The other end of the second link is pivotally connected to the base of the assembly. The multilink mechanism of the device of this modification is made in the form of a human being, wherein the first link is formed as hands, the second link as a body, and the base support as legs. Rotation of the crank may be further transmitted to another attention-attracting mechanism that is formed as a Ferris wheel. According to the second modification, the multilink mechanism is formed as an oil-extracting pump.

Abstract: A return spring structure of a hand-wound timepiece has a plate-like placement portion that is placed on a surface of a support member. A forced insertion hooking spring portion is forcibly inserted into an opening of a locking plate-like portion of the support member, and has a forced insertion hooking end portion locked in a back surface of a wall defining the opening and a hooking spring arm portion extending from one edge portion of the plate-like placement portion. A return spring portion extends from the other edge portion of the plate-like placement portion. The return spring structure also has a positioning spring portion that includes a positioning spring arm portion extending parallel to the hooking spring arm portion from the one edge portion of the plate-like placement portion and a forced insertion engagement end portion engaged with the opening of the support member at the forward end portion.

Abstract: Portable device, of all types, comprising a watch (1) with mechanical winding, characterized in that a mechanical device doing away with the need for the user to manually wind, uses the power of kinetic energy provided with simple actions making up normal usage of the device in order to carry out mechanical winding of the watch (1).

Abstract: A watch winder includes a housing, a power supply disposed in the housing, a transmitter coil mounted at one side of the housing and electrically connected with a circuit board of the power supply, and a receiver coil mounted at another side of the housing and electrically connected with a circuit board of the power supply. The fist coil can be actuated by the power supply to transmit a signal, and the receiver coil can be used to receive a signal and convert the signal into an electrical current that can be transmitted to the circuit board for charging the power supply. Therefore, the electrical energy of the watch winder can be wireless transmitted through a non-contact interface.

Abstract: A unidirectional coupling-clutch runner includes a coaxial pinion and wheel which pivot relative to one another. The runner includes a first driving part angularly integral with the pinion having at least one elastic catch with the general shape, in plan view, of a C, one branch of which is elongated and terminates with a free end; and a second driving part angularly integral with the wheel and which is coplanar with the first driving part having an internal wolf-toothing. In the neutral rest position the first and second driving parts do not touch one another, the end of the elastic catches in the rest position which are not elastically deformed being located on a circumference whose diameter is larger than a circumference which goes through the top of the wolf-teeth and smaller than a circumference going through the bottom of the toothing of the second driving part.

Abstract: A unit is formed by a winding ratchet (1) and a barrel arbor (4) having an end which includes a non-circular driving formation (5) and a groove (6) adjacent thereto that defines a small-section portion whose shape and dimensions are such that they extend into the section of the driving formation, whereby a shoulder (18) of the barrel arbor limits the height of the groove. The ratchet includes a central opening (2) corresponding to the driving formation and at least one off-centered tapping (3) relative to the ratchet. It includes an attachment washer (8) having a central passage (9) corresponding to the driving formation and engaged therewith in an assembled position, and at least one off-centered piercing (10), at least one screw for screwing the attachment washer onto the ratchet in a position angularly offset so that in this assembled position, the central opening is not aligned with the central passage.

Abstract: The invention concerns a mechanical device (100) for the sequential control of at least two levers for a timepiece mechanism, controlling a first lever (1) and a second (2) lever cooperating with a contact surface (10) in accordance with a sequence wherein each changes from a first torque consumption level (11; 21) to a second, higher level (12; 22) during an increasing phase (14; 24) in which it stores torque, then from said second level (12; 22) to said first level (11; 21) during a decreasing phase (15; 25) in which it transmits energy. The device is wherein it includes delaying means (4) creating, during the decreasing phase (15) of said first lever (1), a stabilising stage at a third, intermediate level (13) between said first (11) and second (12) levels. The invention also concerns a timepiece incorporating a device (100) of this type.

Abstract: A device for winding watches, particularly manually-wound watches, comprising a containment structure which accommodates a motor, transmission means and a motor controller. The transmission means transfer the rotation of the motor, provided with power supply means, to a coupling which can be associated with the crown of the watch to be wound. The rotation is controlled by the controller. The device comprises a seat for stably accommodating the watch to be wound, the seat being defined on a surface of the containment structure.

Abstract: A watch winder comprising plural watch winder units and a power supply. The plural watch winder units are assembled by connectors in such a manner that the watch winders units are electrically connected to one another, and the power supply is electrically connected to one of the watch winder units to supply power to all the electrically-connected watch winder units. By such arrangements, the respective watch winder units are not required to be provided with one power supply, thus saving the manufacturing cost, satisfying the requirements of environmental protection, and the watch winder units can be assembled as desired.

Abstract: A programmable watch winding apparatus includes a user interface for users to input a winding number and rotational direction of turns the programmable watch winding apparatus performs to wind a mechanical watch, and a control unit controlling a transmission device to rotate a rotatory base according to the users' input. Thereby, the programmable watch winding apparatus is fully controlled to automatically wind the mechanical watch carried thereon.

Abstract: The invention concerns a vertical type uncoupling device, in particular in an automatic watch winding mechanism that includes an oscillating mass and a gear train connecting the oscillating mass to a barrel (9), wherein said gear train includes a direction reverser device (11, 12), a reduction gear (13, 14, 15, 16) and the uncoupling device (20). The uncoupling device includes two coaxial wheels (17, 7) that can be coupled in rotation in one direction owing to respective Breguet toothings (21, 22) arranged on the opposite flanks of said wheels. The coaxial wheel (17), which is mobile in the axial direction, is secured to a sliding arbour (18), which is mounted so as to rotate and slide in fixed bearings (24, 25). A return spring (26) includes an elastic strip that abuts against one end of the sliding arbour (18) to tend to engage and keep meshed the Breguet toothings. This design reduces friction and saves space. Other applications of this type of uncoupling device in a watch movement are described.

Abstract: A watch winder comprising plural watch winder units and a power supply. The plural watch winder units are assembled by connectors in such a manner that the watch winders units are electrically connected to one another, and the power supply is electrically connected to one of the watch winder units to supply power to all the electrically-connected watch winder units. By such arrangements, the respective watch winder units are not required to be provided with one power supply, thus saving the manufacturing cost, satisfying the requirements of environmental protection, and the watch winder units can be assembled as desired.

Abstract: A unit is formed by a winding ratchet (1) and a barrel arbor (4) having an end which includes a non-circular driving formation (5) and a groove (6) adjacent thereto that defines a small-section portion whose shape and dimensions are such that they extend into the section of the driving formation, whereby a shoulder (18) of the barrel arbor limits the height of the groove. The ratchet includes a central opening (2) corresponding to the driving formation and at least one off-centered tapping (3) relative to the ratchet. It includes an attachment washer (8) having a central passage (9) corresponding to the driving formation and engaged therewith in an assembled position, and at least one off-centered piercing (10), at least one screw for screwing the attachment washer onto the ratchet in a position angularly offset so that in this assembled position, the central opening is not aligned with the central passage.

Abstract: A timing device utilizes hybrid power to drive a movement of the timing device, the hybrid power supply functioning as an auxiliary unit to deliver power to an electro-magnetically driving unit through an automatic control unit manipulated by a mechanical energy storage status detection unit to produce mechanical energy in time to prevent the movement from stopping; a main spring barrel or a potential difference weight of the kinetic energy storage unit being driven to further drive a wheel chain of the timing device and automatically suspend driving upon the completion of winding the wheel train.

Abstract: A controllable watch winder for a self-winding mechanical watch, in which a turntable is provided to hold and rotate the watch, including a programmable microprocessor circuit configured to count the number of rotations executed by the turntable. In one aspect, the watch winder is configured to introduce, after the electronic circuit is activated, a delay period before the turntable commences rotating. In another aspect, the circuit may be configured to interrupt the rotation of the turntable with pauses, to break up the rotation into cyclical sets. The circuit may be configured to automatically predetermine the number of rotations in each set. In yet another aspect, the watch winder may be configured to be manually adjustable, to variably predetermine before use, the number of rotations to be executed by the turntable and the length of any pause between rotations.

Abstract: An improved watch-winding apparatus comprising: a bottom support; a body; a lid cover with a glass window; and a plurality of tabbed spring cushions. A solid direct drive system drives the rotating tray. An electronic system keeps the rotating tray swinging per the intended program. Where a drawer is employed, a catch lock mechanism is also provided to prevent the drawer from automatically sliding open.

Abstract: A musical module for a watch movement, said module comprising a barrel (11), at least one part (5) having pins (12), a comb (13) with a number of tines, a regulating system (7, 8, 9, 10), and a control device (16, 17, 21). The part (5) or each part (5) is a toothed disc driven by the barrel (11) via at least one pinion (6). The or each toothed disc (5) with said pins (12) on at least one face is able to be positioned over or underneath the comb (13) so that the pins (12) act on the tines of the comb (13) to play a tune. The control device (16, 17, 21) is designed to trigger a rotation of the toothed disc or discs (5) in order to start the tune. The regulating system (7, 8, 9, 10) maintains a constant rotation of the toothed disc or discs (5).

Abstract: An automatic watch winder that is user-programmable via USB (Universal Serial Bus) and/or wireless IrDA (Infrared), IEEE 802.11, or IEEE 802.15 connections to a computer, such as a laptop or notebook computer.

Abstract: A watchwinder adapted for home use or in a retail store environment includes a horizontal dovetail groove or channel on the top, bottom and side surfaces of the watchwinder housing which cooperates with a removable interlocking bar or rail of mating dovetail shape to selectively and detachably interconnect adjacent watchwinders arranged in a vertical or side-by-side relation. The grooves preferably extend across the horizontal dimension of the watchwinder to a point short of the front of the housing for concealment purposes, and are made relatively wide in relation to the dimensions of the housing to improve rigidity of an interlocked grouping of watchwinders and to simplify assembly. Preferably, the channels are of equal size and shape and spaced equidistantly apart. An array of interlocked watchwinders can be built up to varying size and shape, and one or more of the watchwinders can be selectively removed from anywhere within the array without disturbing the others.

Abstract: The invention proposes a timepiece including a motion work (12) which drives analogue display means (14) and a strike train (16) which drives a striking mechanism (18), wherein the motion work (12) is driven in rotation by a barrel (20) including a spring, a toothing which meshes with the motion work (12), and a winding ratchet (38) coaxial to the barrel (20), the winding ratchet (38) being secured in rotation to the drive arbour (26) of the barrel (20), and wherein a winding member (44) is provided to mesh with the winding ratchet (38) in order to wind the barrel spring (24), characterized in that the winding ratchet (38) drives the strike train (16) in rotation via an intermediate wheel set (45) whose axis (A2) is shifted relative to the axis (A1) of the barrel (20), and in that the intermediate wheel set (45) includes a click device (47) for uncoupling the winding ratchet (38) relative to the strike train (16) during the winding phase of the spring (24).

Abstract: A watch winder includes a watch carrier having a longitudinal axis, a continuous outer wall having a plurality of detectable features, and a watch holder to support the watch relative to the longitudinal axis so that the watch rotates upon rotation of the carrier about the longitudinal axis; a drive means within a circuit including a controller to control the rotation of the watch carrier through successive winding cycles; and a sensor to detect the position of the detectable features, the controller stopping the carrier at the end of each cycle in response to detection of a given number of detectable features by the sensor, the feature detected at the end of each cycle being different from the feature detected by the sensor at the end of the immediately preceding cycle.

Abstract: A watch winder can automatically wind numerous kind/brand of self-winding watch and maintains the main-spring in ideal tension range. The watch in winding can always be positioned in its favorable showing orientation. The watch in winding can be mounted or dismounted easily. The noise produced by the winder is reduced significantly to a low level. The winder comprises a rotary bowl with central rectangular recess for receiving a cushion holder inserted on the bowl. An electrical noise-proof motor-gear system drives the rotary bowl. An IC circuitry installed under the panel controls the rotation mode of the motor-gear system. A length-wise retractile cushion holder is inserted in the recess with its width tightly fitted for carrying the watch in place. A switch means is installed on the panel with an indicating means for selecting a respective mode to drive the rotary base.

Abstract: The present invention concerns a mechanical watch (1), preferably of the pocket watch type, wound by a key. More specifically, the present invention concerns a protective device for the aperture (6) allowing access to the winding mechanism of such a watch, particular to the winding stem (7). For this purpose, a moving element (8) is implemented, mounted around the stem (7) and able to move between two end positions, first of all to at least partially block the aperture (6) in normal use and, secondly, to release access to the winding stem (7) in order to wind the watch.

Abstract: A device for supporting and winding-up automatic wrist watches comprises a base including a plurality of rotary supporting elements, each provided with latching means for housing a wrist watch therein, the supporting elements being rotatively driven by a geared-motor unit.

Abstract: A timepiece including a clockwork movement for measuring the time, and a striking work actuated by a barrel with a motor spring independent of the clockwork movement, this timepiece also including mechanical control means capable of being actuated manually to trigger the striking work, wherein the barrel is wound by means of a winding bar that ends, at its free end, in a toothed sector or rack and is kinematically connected to a winding push-button on the one hand, and to the motor spring of said striking work on the other hand.

Abstract: A watch winder includes a watch carrier that is freely supported on a rest for ease in mounting and removing the carrier and for reversing the direction of winding by simply turning the watch carrier end-to-end. The watch carrier includes a cylinder and a watch holder insertable into the interior of the cylinder. The rest is adapted to support the cylinder in a horizontal position, and includes first and second support sections having parallel longitudinal axes spaced from each other at a distance less than the diameter of the cylinder. Each section includes a housing having rollers or other support surfaces adjacent the ends of the housing, with at least one of the rollers being driven by an electric motor to rotate the cylinder at predetermined times when the cylinder is supported on the rollers. A feature of the cylinder may be detected to stop rotation at a predetermined orientation.

Abstract: The mechanism for transmission of axial and rotative movements between two portions of a stem with offset axes, includes a movable assembly movable axially. The section portion of the stem carries a second pinion and is pivoted on said movable assembly but it is axially secured to, this movable assembly. The first portion of the stem is pivoted on the movable assembly but axially secured to this latter and is secured to a first pinion, one or an uneven number of reverser(s), pivoted on the movable assembly kinematically connects the first pinion to the second pinion.

Abstract: Automatic watches use the movements of the wrist to re-wind the barrel spring and thus supply the necessary energy for the correct functioning of the watch. When the user cannot wear the watch it is proposed to place it on an automatic re-winding device. The device according to the invention is compact and modular. Furthermore, in order to avoid any error of manipulation, the starting and stopping of the re-winding device is done automatically by means of a detection of the presence of the watch (3). The passing of the strap in the detachable base (2) produces the tension of the device.

Abstract: To provide a watch in which, in case where a screw lock function has decreased, a part exchange around a crown is made possible while ensuring a waterproofness. To an outside winding stem pipe having a bridge portion and brazed to a case band there is passed an inside winding stem pipe having a male screw portion directed to an outside of the case band and a convex portion colliding against the bridge portion so as to be capable of being put in or out, the pipe is locked to the pipe by a lock means provided over both of the winging stem pipes, and the pipe is interposed between an attaching ring detachably meshing with the pipe and the convex portion, thereby positioning the pipe with respect to the former pipe in an axial direction. A crown is detachably meshed with the male screw portion of the pipe.

Abstract: An electronic module for regulation of a watch movement with mechanical winding includes a generator (1) permitting converting the mechanical energy supplied by the mechanical watch movement into a measuring signal (G+;G−) and an electronic circuit (11) supplied by the generator. The electronic circuit includes an energy dissipation circuit (9) permitting applying at least two separate braking couples more than zero to the generator (1). The electronic circuit (11) also includes a counter to control the braking circuit. The braking couple selected by the control circuit depends on the advance of the generator and is reduced, without being suppressed, when the measuring signal (G+;G−) passes through an extreme.

Abstract: A mechanism for setting and winding of a clockwork, with a winding button spindle, rotatable around its arbor and displaceable in the axial direction, and with a first gear arranged at a distance from the winding button spindle, rotatable around its arbor and displaceable in the direction of its arbor. The rotational movement of this first gear is operatively connected to the rotational movement of the winding button spindle via at least one additional gear. The axial displaceability of the first gear is operatively connected to the axial displaceability of the winding spindle via a first connection device, so that the first gear can be engaged in the axial direction with additional clockwork parts by axial displacement of the winding spindle.

Abstract: The present invention concerns a power reserve indicator device (1) for a manually or automatically wound timepiece, said timepiece including a barrel, a mainspring housed in the barrel and time display elements mechanically coupled to said barrel, said indictor device (1) including a differential gear (10) a first input (8) of which is driven by a winding gear train (6) which meshes with a first driving gear formed by the barrel core, the output (16) of said differential gear (10) driving a display gear train (18) for indicating the reserve of power assured by the number of winding turns of the mainspring, characterised in that the second input (14) of the differential gear (10) is driven by a letting down gear train (12) which meshes with a second driving gear formed by the outer toothing of said barrel or by a wheel and pinion driven by said barrel.

Abstract: To provide a power accumulation structure of a simple construction, in which a planetary mechanism is not used, for a timepiece using a spring as power. A power accumulation structure of a simple construction not using a planetary mechanism is a power accumulation structure using a threaded mechanism.