Abstract: The invention relates to a timepiece displaying the day of the month, characterized by the fact that said timepiece comprises two rotating disks (22, 24), which at least partly overlap and respectively display the digits and articles of the day of the month. Said two rotating disks (22, 24) are provided with the series of numbers 0 to 9 and the series of numbers 0, 1, 2, 3, 3, all of which are evenly distributed across a peripheral ring, and are disposed such that the numbers of one disk are displayed so as to be juxtaposed to the numbers of the other disk. The inventive timepiece also comprises a mechanism (12, 14, 28, 32, 38) driving the rotating disks in order for the juxtaposed numbers to indicate the day of the month.

Abstract: A calendar timepiece has a main plate, a time indicator mounted on the main plate for undergoing rotational movement to indicate time information, a date indicator mounted for undergoing rotation to indicate date information, and a date indicator driving wheel mounted on the main plate for undergoing rotation. A date jumper is disposed on the main plate and has a train wheel comprised of a date indicator setting portion for controlling rotation of the date indicator by engagement with the inner teeth portion of the date indicator. The date indicator setting portion has a first setting portion for contacting a tip of a first tooth of the date indicator, a second setting portion, and a third setting portion for contacting a tip of a second tooth of the date indicator. Each of the first, second, and third setting portions has a generally linear surface portion disposed at an angle relative to one another.

Abstract: A calendar mechanism-equipped timepiece having a compactly constructed drive mechanism for driving first and second date indicators is offered. A timepiece equipped with a calendar mechanism has a drive mechanism, time display wheels, a first date indicator for displaying the ones digit of the date, a second date indicator for displaying the tens digit of the date, and a program wheel capable of intermittently rotating the first date indicator and the second date indicator based on the operation of the drive mechanism. The center axis of rotation of the time display wheels is located within the center hole of the program wheel under the condition where the time display wheels are rotatable. The first and second date indicators are placed in position adjacently to each other. Information about the date can be displayed from a window in the dial by one of the first date characters on the first date indicator and one of the second date characters on the second date indicator.

Abstract: This timepiece comprises an annual or perpetual date display mechanism and also comprises means (11) for operating a device (13) for displaying the number of days in the month being displayed.

Abstract: The device for displaying the day of the month comprises a units display member (1) and a tens display member (2) provided one with at least one series of numerals from 0 to 9 and the other with a series of numeral from 0 to 3, these units and tens display members being positioned relative to each other so as to display in the space of a large window two numerals side by side. The units display member (1) is divided into ten sectors or a multiple of ten sectors each carrying a numeral from 0 to 9, the nine sectors (a) separating the numerals 0–1, 1–2; . . . 8–9 having an angular extent equal to ?th of the angular extent of the sectors (b) separating the numerals 9 from the numerals 0.

Abstract: A timepiece having a display for displaying a digit provided on a ring which itself has a plurality of digits provided thereon, wherein the timepiece comprises an integrated circuit operable in at least (i) a date display mode and (ii) a counting mode; a gearing assembly comprising one or more wheels, being meshingly coupled to the ring so that the rotation of the one or more wheels causes the rotation of the ring; a motor, the motor rotateably coupled to the at least one or more wheels of the gearing assembly, wherein the motor has a rotatable member such that the rotation thereof causes the ring to rotate; and mode selecting means for selecting between at least the date display mode and the counting mode; wherein when in the date display mode the ring rotates at a first rate and when in the counting mode the ring rotates at a second rate different from the first rate.

Abstract: An electronic timepiece with date display function reduces power consumption in conjunction with the user adjusting the date, and makes it easier for the user to set the date. A displayed date detection unit H has a day detector H1 for detecting the displayed day, a month detector H2 for detecting the displayed month, and a year detector H3 for detecting the displayed year. A control unit A controls a calendar mechanism drive unit F according to the date detected by detectors H1 to H3.

Abstract: A timepiece comprising a date display, comprising a date display assembly comprising a date ring, a first gearing assembly being meshingly coupled to the date ring for causing the rotation of the date ring; and a stepping motor comprising a rotor, wherein the rotor of the stepping motor is rotateably coupled to the at least one or more wheels of the first gearing assembly, wherein the rotation of the rotor causes the date ring to rotate; a date-keeping assembly operatively coupled to the date display assembly, comprising: at least a second gearing assembly comprising at least an hour wheel and a detection wheel assembly, wherein at least certain rotational increments of the detection wheel, and the clockwise or counterclockwise direction thereof, causes the rotor of the stepping motor to rotate so that the date ring can be rotated in one of a clockwise or counterclockwise direction; whereby the rotation of the hour wheel through a predetermined midnight position results in that the stepping motor causes the d

Abstract: A date display assembly for a timepiece, wherein the timepiece comprises a casing, an hour wheel that is rotationally engaged with a meshing wheel, and a display window for displaying a date, the date display assembly comprising an outer date ring having a plurality of digits thereon and aligned in the casing such that each of the plurality of digits is appearable in the display window; an inner date ring having a plurality of digits thereon and also aligned in the casing such that each of the plurality of digits is appearable in the display window; a date wheel, rotatably engageable with the meshing wheel, for driving the outer date ring in a first direction; and an inner date ring driving wheel, rotatably engageable with the outer date ring, for driving the inner date ring in a direction opposite the first direction.

Abstract: The present invention concerns a device for winding and setting the time of a timepiece such as a date watch (1) including a date disc (14), characterized in that the device includes a crown (12) arranged in the top plane of the watch (1) parallel to the plane of the movement (18).

Abstract: The invention concerns a watch equipped with means for determining a location longitude and a device for determining the sun's altitude above the horizon. Said watch comprises a mobile element (16) doing one full rotation in 12 hours and bearing a hour hand (24), and a dial (32). It comprises for this purpose a rotating ring (44) for reading longitude, bearing an index mark (47) and, therefrom, a scale (45) in degrees, extending from 0° to 90° on either side of the index mark and covering the ring (44) over its whole periphery. Moreover, the dial (32) is provided with a circular scale (33) for selecting a time zone, with a median point (35) corresponding to the dial top point and a graduation from 0 to +6 hours or ?6 hours depending on the rotational direction.

Abstract: Date mechanism for a timepiece such as a wristwatch including two superposed respectively lower (6) and upper (4) date rings, whose surface is divided into a plurality of sectors, the upper ring (4) including sixteen sectors, fifteen of which respectively bear fifteen successive markings of a cycle of 31 positions, and the sixteenth of which is an extra sector having an open or transparent aperture (8), whereas the lower ring (6) includes seventeen sectors, sixteen of which bear respectively the other sixteen markings of the cycle of 31 positions, and the seventeenth of which is an extra sector, each of said rings cooperating with drive means such that the markings appear successively in a display zone (20) the date mechanism further including a jumper-effect stopping device (22) able to stop each ring (4, 6) in any desired position, the date mechanism being characterised in that one location on the upper ring (4) and one location on the lower ring (6) is provided with a thinned tooth (14) and (16), located b

Abstract: Date mechanism for a timepiece such as a wristwatch including two superposed respectively upper (4) and lower (6) date rings, whose surface is divided into a plurality of sectors, the upper ring (4) including sixteen sectors, fifteen of which respectively bear fifteen successive markings of a cycle of 31 positions, and the sixteenth of which is an extra sector having an open or transparent aperture (8), whereas the lower ring (6) includes seventeen sectors, sixteen of which bear respectively the other sixteen markings of the cycle of 31 positions, and the seventeenth of which is an extra sector, each of said rings (4, 6) cooperating with drive means such that the markings of the lower ring appear successively in a display zone (30), the date mechanism being wherein each ring (4, 6) includes two peripheral toothings extending along two stepped, respectively upper and lower rows, the teeth (10, 12) of the upper and lower rows of the upper ring (4) being superposed, whereas the teeth (18, 20) of the upper and lo

Abstract: The invention relates to a timepiece comprising a time train, a 31-toothed wheel, a wheel of units of 30 teeth plus a space corresponding to a tooth which is used to drive a star-wheel of units and a four-toothed wheel for driving a star-wheel of tens, a year cam which is solidly connected to a wheel, and drive means for driving said 31-toothed wheel by one revolution per month and the year cam by one revolution per year. The aforementioned 31-toothed wheel is solidly connected to a corrector element. The drive means comprise a cam which is solidly connected to a wheel, a driving yoke, elastic means which are used to press said yoke against the cam, a corrector yoke, a feeler which is arranged to detect the position of the year cam and elastic means in order to connect said yokes to one another.

Abstract: A calendar providing an indication of the period of time in which a woman is most likely to conceive during a calendar month. The calendar includes an inner wheel rotatably attached to an outer wheel. The inner wheel includes markings indicating the relevant points of a woman's cycle to include the start of a woman's menstrual period and an at-risk phase. The outer wheel includes markings for a conventional calendar. The user aligns the start of her period with the appropriate day of the month. The user may then determine when her at-risk phase begins. During this at-risk phase, the user is most likely to conceive if engaging in sexual intercourse. The calendar is portable and may include an optional locking device for locking the aligned inner wheel against the outer wheel.

Abstract: To realize a chronograph timepiece capable of firmly and simultaneously zeroing an hour heart cam, a second heart cam and a minute heart cam. A chronograph timepiece of the invention includes a hammer operated by operating a reset button for controlling to operate to zero an hour chronograph wheel & pinion, a minute chronograph wheel & pinion and a second chronograph wheel & pinion. When the hammer is brought into contact with an hour heart cam, a second heart cam and a minute heart cam, a position of the hammer is determined only by the hour heart cam, the second heart cam and the minute heart cam. When the hammer is brought into contact with the hour heart cam, the second heart cam and the minute heart cam, a direction of a press force exerted to the hammer is constituted to pass a rotational center of the second chronograph wheel.

Abstract: To realize a chronograph timepiece in which a chronograph mechanism and a calendar mechanism are constituted not to overlap and a thickness of a movement is thin. A chronograph timepiece of the invention includes a base unit including a main plate, a surface train wheel and an escapement/speed control apparatus and including at least one of an automatic winding apparatus and a hand winding apparatus and a chronograph unit including a second indicating mechanism, a second chronograph train wheel, a minute chronograph train wheel, an hour chronograph train wheel and a date feeding mechanism. The chronograph unit is arranged on a side of the base unit having a dial. A calendar mechanism includes a date indicator and a date feeding mechanism. The date feeding mechanism is arranged not to overlap any one of the second indicating mechanism, the second chronograph train wheel, the minute chronograph train wheel and the hour chronograph train wheel.

Abstract: To provide a timepiece with calendar including a date correcting mechanism capable of feeding a date indicator in a short period of time and capable of firmly correcting the date indicator without presence of a long dead point in correcting the date indicator by a simple mechanism. A timepiece with calendar according to the invention includes a date indicator including pieces of triangular teeth, a date indicator driving wheel for rotating the date indicator and a date indicator driving finger provided integrally with the date indicator driving wheel. The date indicator driving finger includes a central portion provided integrally with the date indicator driving wheel, a spring portion in a shape of a circular arc and a date indicator feeding portion provided at a front end of the spring portion. A date indicator setting portion of a date jumper includes a first setting portion, a second setting portion and a third setting portion.

Abstract: A long-lasting illuminated calendar designed for analog watches. A calendar date disk with see-through numbered indicia corresponding to sequential calendar days is mounted above a main plate which moves relative to the calendar disk at the rate of one date indicia per day. The illumination is provided by a sealed glass tube with a luminescent coating inside which is permanently activated, preferably by a limited quantity of tritium gas. The sealed glass tube is positioned in a recess formed in the watch plate. The light emitted from the gas tube projects through the transparent or translucent indicia in the calendar date disk.

Abstract: This annual date mechanism comprises a correction cam (1a) in kinematic connection with a date indicating runner (1), a correction rocker (8) engaged on the one hand with said correction cam (1a) and, on the other hand, with an annual cam (18). A spring (9) presses the correction rocker (8) against the cams (1a, 18). The correction cam (1a) comprises a portion (1a′) for arming said spring (9), followed by a portion (1a*) sized to cause said date runner (1) to move by one step between “31” and “1”, under the pressure of said spring (9).

Abstract: This date mechanism comprises a units runner (1, 3) equipped with ten teeth or with a multiple of ten teeth and a tens runner (2, 4) equipped with four teeth or with a multiple of four teeth, a transmission connecting these runners to move the tens runner on by one step for every ten steps of the units runner (1, 3) and a drive runner (7, 8) for driving the units runner (1, 3). One tooth of the units runner (1, 3) for moving on from “1” to “2” is a tooth of an auxiliary runner (12) secured to the units runner (1, 3) and which is able to engage alternately with the teeth of the tens indicator runner (2, 4) and with a cam (15) secured to the tens runner (2, 4) and intended to allow the auxiliary runner (12) to drive said tens runner (4) by one step between “31” and “01” without driving the units runner (1, 3).

Abstract: The electronic watch includes hands (2, 4, 5) indicating the time, a device (6) displaying at least the date, this device being formed of first (9) and second (10) indicators on which are marked figures (11, 12) respectively indicating the tens and the units of said date. A control member able to be activated manually allows the hands to be set to the correct time and the date to be set. The first (9) and second (10) indicators are each driven by an independent motor (17, 18).

Abstract: Date display device, intended to be fitted to a timepiece provided with a movement, a dial 10 and hands 12, 14 driven by said movement and displaying the time. A date mechanism, drives first 32 and second 34 display members, mounted to move in rotation on the movement, and provided with indices 24 26. The device is arranged so that, when the mechanism causes the units display to pass from a value n to n+1, n being an integer number comprised between 1 and 9, the first member 32 travels, in the clockwise direction, through an angle equal to 30°, and so that, when n is equal to 1, the index 24 is located in a position corresponding to the position which an hour hand would occupy, when it is one o'clock.

Abstract: The timepiece carries a date with a large aperture including a units indicator (9) and a tens indicator (10). Between these indicators and a date control crown-wheel (14) are located mechanisms (17, 18) for driving said indicators, these mechanisms each being provided with a locking system (30, 52) preventing any inadvertent movement of these indicators when shocks are applied to the timepiece.

Abstract: A calendar timepiece has a main plate having a guide portion and a date indicator driving wheel mounted on the main plate to undergo rotation. A date feed finger is connected to the date indicator driving wheel for rotation therewith to engage the guide portion of the main plate so that the date feed finger is displaced in a generally thickness direction of the main plate. A date indicator has a tooth portion for meshing engagement with the date feed finger when the date feed finger engages the guide portion of the main plate and is displaced in the thickness direction of the main plate so that the date indicator undergoes rotation relative to the main plate to indicate date information during rotation of the date feed finger. A day feed finger is connected to the date indicator driving wheel for rotation therewith. A day indicator is connected to the day feed finger for rotation therewith to indicate a day of the week.

Abstract: In order to manufacture the display element intended for a timepiece, a sheet of plastic material shaped in a tape (3) is provided. The sheet is then deformed using tools (4, 6) by thermoforming to give it a profile (10, 11, 13, B) corresponding to the outer contour (20) of said elements. Such an element can be a date disc or a dial.

Abstract: The device for displaying the day of the month comprises a units display member (1) and a tens display member (2) provided one with at least one series of numerals from 0 to 9 and the other with a series of numeral from 0 to 3, these units and tens display members being positioned relative to each other so as to display in the space of a large window two numerals side by side. The units display member (1) is divided into ten sectors or a multiple of ten sectors each carrying a numeral from 0 to 9, the nine sectors (a) separating the numerals 0-1; 1-2; . . . 8-9 having an angular extent equal to ⅘th of the angular extent of the sectors (b) separating the numerals 9 from the numerals 0.

Abstract: This annual date mechanism comprises a correction cam (1a) in kinematic connection with a date indicating runner (1), a correction rocker (8) engaged on the one hand with said correction cam (1a) and, on the other hand, with an annual cam (18). A spring (9) presses the correction rocker (8) against the cams (1a, 18). The correction cam (1a) comprises a portion (1a′) for arming said spring (9), followed by a portion (1a*) sized to cause said date runner (1) to move by one step between “31” and “1”, under the pressure of said spring (9).

Abstract: An electronic timepiece has a wheel train mounted for undergoing rotation and a transmission wheel for undergoing rotation in accordance with rotation of the wheel train. A contact point spring is connected to the transmission wheel for rotation therewith. The contact point spring extends substantially linearly through a rotational center of the transmission wheel. First and second detection patterns contact the contact point spring during rotation of the transmission wheel to generate a rotational position detecting signal corresponding to a rotational position of the transmission wheel. The first and second detection patterns are disposed at an angle of substantially 180 degree relative to the rotational center of the transmission wheel.

Abstract: To provide an electronic timepiece enabling reliable detection of a state of rotation of an indication wheel such as a date dial. An ultrasonic motor 1130 has an ultrasonic rotor pinion 1134b. A date dial 1120 is disposed on a main plate 1102 in such a way as to rotate relative thereto. The ultrasonic rotor pinion 1134b is meshed with an intermediate date driving gear wheel 1142a. A date driving wheel 1150 is rotatably disposed on the main plate 1102. A date driving gear wheel 1150b is meshed with an intermediate date driving pinion 1142b. A date driving gear portion 1150b is meshed with a dial gear portion 1120a. A contact point spring 1160 is disposed on a spring guiding portion 1150d. The contact point spring 1160 rotates integrally with the date driving wheel 1150 through the rotation of the date driving wheel 1150. The state of rotation of the date driving wheel 1150 can be detected by contact of the contact point spring 1160 with the contact point pattern 1174.

Abstract: According to this method the units and tens numerals are placed onto respective indicator runners (1, 2). Two drivelines are formed, one being a daily driveline between the clock movement and the indicator runners, for moving the units indicator runner (1) selectively step by step by one step every 24 hours, and for moving the tens indicator runner (2) by one step for every ten steps of the units indicator runner (1), in order to move on from one multiple of ten to the next, and for moving the tens indicator alone by one step to move on from “31” to “01” on a 31-day cycle, and an annual driveline between the clock movement and the tens indicator runner, which driveline is programmed to move the tens indicator runner (2) by one step at the same time as the units indicator runner (1) is moved by the daily driveline, to move on from “30” to “01” at the end of the months which comprise less than 31 days.

Abstract: Can be mounted in clock mechanisms, especially in the form of a perpetual calendar which is actuated via a wheel of a clock, which wheel performs a revolution in 24 hours, the display being effected separated into units and tens via a printed display disc, which is provided with a toothing, and a program carrier being provided which performs a revolution in 31 days, it is provided that the program carrier (4) actuates additional locking elements in such a manner that, on those days on which the risk of over-rotation exists, they are swung in and out again in the rotational movement of the display discs (2, 3) and correspondingly prevent over-rotation in cooperation with the toothings (9, 16) of the display discs (2, 3). In the case of a calendar mechanism, especially of a modular structure, which.

Abstract: A planisphere watch includes a watch case having a transparent lens. A time keeping mechanism is disposed within the case and has a time display viewable through the lens. A planisphere map of star constellations and star systems is viewable through the lens. A rotatable bezel overlies the lens and defines a window through which a portion of the planisphere is viewed. The bezel includes time indicia alignable with date indicia imprinted onto an underlying tension ring. Rotating the bezel to align a selected time with a selected date reveals a portion of the planisphere map viewable in the night sky at that selected time and date.

Abstract: An electronic timepiece has a date wheel for undergoing rotation in accordance with movement of an indicator to change a display state of a date display, a 24 hour wheel driven to undergo one complete rotation each 24 hour period in accordance with movement of the indicator, and a contact spring connected to the 24 hour wheel for rotation therewith. A circuit board has first and second electrode patterns electrically connected to each other by the contact spring. A switching circuit changes a voltage level of the first electrode pattern to a first voltage level. A detector outputs an initializing signal corresponding to detection of termination of an operation for interchanging a battery of the electronic timepiece or for correcting time.

Abstract: An intermittent feed mechanism has a counting wheel and a cam balancer mounted on the counting wheel and having a hole. A feed pawl is mounted on the cam balancer and has a spring portion and a pawl portion. The pawl portion of the feed pawl has a protrusion disposed in the hole of the cam balancer and pressed against an edge portion of the hole by a biasing force of the spring portion.

Abstract: Can be mounted in clock mechanisms, especially in the form of a perpetual calendar which is actuated via a wheel of a clock, which wheel performs a revolution in 24 hours, the display being effected separated into units and tens via a printed display disc, which is provided with a toothing, and a program carrier being provided which performs a revolution in 31 days, it is provided that the program carrier (4) actuates additional locking elements in such a manner that, on those days on which the risk of over-rotation exists, they are swung in and out again in the rotational movement of the display discs (2, 3) and correspondingly prevent over-rotation in cooperation with the toothings (9, 16) of the display discs (2, 3).

Abstract: The timepiece carries a date with a large aperture including a units indicator (9) and a tens indicator (10). Between these indicators and a date control crown-wheel (14) are located mechanisms (17, 18) for driving said indicators, these mechanisms each being provided with a locking system (30, 52) preventing any inadvertent movement of these indicators when shocks are applied to the timepiece.

Abstract: The instantaneous date change mechanism includes driving means (3) and positioning means (7) for an indicator (1). The driving means (3) include a spring (6) which ends in a finger (4) acting on a tooth (5) of the indicator. The positioning means are formed in particular of a heel (8) inserted between two teeth (9, 10) of the indicator (1). The driving means (3) are arranged so that the heel (8) can be at least partially released from the indicator teeth when the indicator has to be driven.

Abstract: An electronic timepiece is provided with a device for automatically adjusting month-end calendar dates capable of reading dates simply, quickly, and reliably. A date detection pattern 71 composed of reflective and non-reflective sections is formed on the rear surface of a date dial 70. When the date dial 70 rotates, a change in the boundary between the reflective part and the non-reflective part is read by a photo sensor 81, the necessary number of dates is determined by a control circuit 20 by use of a perpetual calendar circuit, driving a date dial driving mechanisms 51 and 52.

Abstract: A timepiece with calendar mechanism has a main plate, a date indicator, a day indicator and a date indicator driving wheel. A date feed finger is structured integral with the date indicator driving wheel through a date feed finger spring portion, and a day feed finger is structured integral with the date indicator driving wheel through a day feed finger spring portion. The date feed finger rotates through a main-plate side of a day star wheel. The timepiece with calendar mechanism has a date feed finger guide portion to secure mesh in a thickness direction of the date feed finger and date indicator teeth portion when they mesh each other.

Abstract: An electronic timepiece is provided with a device for automatically adjusting month-end calendar dates capable of reading dates simply, quickly, and reliably.

Abstract: A time-setting mechanism for a clock movement with perpetual Julian date comprising a device for driving a date indicator including driving means for moving forward said indicator by one jump every twenty-four hours. The movement has an adjusting device for automatically moving said indicator by a number of steps taking into account months with 28, 29 or 30 days, said device comprising a rotary cam driven by at least one step every twenty-four hours, said cam having a profile for steering a sensor bringing about: the oscillating movement of a moving mechanism provided with a pawl system for moving forward the date indicator by the required additional number of adjusting steps; and for moving forward said cam by a number of steps equal to the number of said indicator adjusting steps so as to make it move one complete cycle per year.

Abstract: In an initial state after interchanging a battery or the like, the date switching time is determined by a mechanical system by initially bringing a pull-resistor into ON state via NMOS transistor by CPU and after detection thereby, operation of CPU proceeds to detection of date switching time by an electronic system by bringing the pull-down resistor into OFF state.

Abstract: A conventional type clock with a date, hour, minute and seconds display, characterized in that Maya signs are provided instead of the usual hour signs and in that the 20 Tzolkin day symbols are applied to an outer ring that can rotate according to the clock movement. The meaning of each of the respective combinations of Maya signs and Tzolkin day symbols can be inferred from the corresponding Tzolkin calendar.

Abstract: A small electronic apparatus provided with a functional display unit is formed of function driving device for generating function driving signals corresponding to a plurality of functions, a plurality of functional display devices corresponding to the functions and including first and second display devices, and a single motor electrically connected to the function driving devices and operated according to the function driving signals from the function driving device. A driving device transmits a driving force to the first functional display device, and an intermittent driving device is connected to the driving device to operate in association therewith. The intermittent driving device rotates the second display device intermittently. A clocking device is electrically connected to the function driving device.

Abstract: A calendar indicator includes a date disc, a week disc and an indicator member. The date disc is equally divided into 28 date indicating segments. The date disc further has 28 numerals, from "1" to "28", respectively provided in sequence on the 28 date indicating segments of the 28 date sectors. The three adjacent date indicating segments having the numerals "1", "2" and "3" provided thereon respectively form a first, a second and a third sub-segment. Three numerals including "29", "30" and "31" are respectively provided on the first, second and third sub-segments. The week disc which is coaxially and rotatably mounted on the date disc is equally divided into 28 week indicating segments. The indicating member is rotatably mounted on the week disc for indicating what date and day of week is today. Whereby the user may easily find out what day is today and the day of week of today from the calendar indicator of the present invention.

Abstract: An analog timepiece having a novel means of displaying the current day of the month and indicating the current month of the year. Proximate to each of the hour positions 1 through 12 on the timepiece is a window for displaying the date; the date is displayed in only one of the twelve windows so that the window position proximate to the hour position corresponds to the current month's position within the twelve month calendar year.

Abstract: A train of clockwork with perpetual Julian date, characterized in that it comprises an adjusting device for causing a date indicator (2) to carry out adjusting steps, for automatically taking into account months with 28, 29, or 30 days, said adjusting device comprising a rotating cam (26) driven at least one step every twenty-four hours, said cam (26) having an outline (28) for controlling a sensor (30) bringing about: the oscillating motion of a mobile element (32) provided with a click spring system (34), for moving forward the date indicator (2) by the required supplementary step(s), and the forward movement of said cam (26) for causing it to make the number of steps equal to the number of adjusting steps of said indicator (2) for carrying out one complete round every year.

Abstract: An annual calendar mechanism including a date-disc provided with a first inner toothing including thirty one teeth, and a date drive wheel and pinion, said wheel and pinion including a finger capable of driving said date-disc through one step once a day, characterized in that the date-disc includes a second inner toothing provided for driving, via a gear train, a month-cam carrying at least five teeth, each of these teeth being arranged to be situated, at the end of the months of less than thirty one days, on the path of the beak of a lever and in that said lever carries a correction drive wheel and pinion fitted with a correction finger co-operating with the first or second toothing at the end of the aforecited months to drive the date-disc through one additional step at the end of said months when the lever pivots following the passage of its beak over a tooth of said cam.

Abstract: A display device that prevents display jumping and corrects the display that includes a displaying transmission wheel which is meshed with a drive wheel and a displaying follower wheel is pressed by a spring toward the area between the drive wheel and the displaying follower wheel so as to elastically take up the play between the drive wheel and the displaying follower wheel. During feeding, the displaying follower wheel is positioned by the displaying transmission wheel. If a crown is pulled out and rotated, the displaying follower wheel is rapid-fed and corrects the display without the aid of the drive wheel and the displaying transmission wheel. At the same time, however, the displaying transmission wheel receives a force in the direction in which it is pressed out of a gap, whereby the engagement with the displaying follower wheel is released.