DE3105243A1 - Time measuring instrument - Google Patents

Description

HOEGER ₁ STE "LL" REÖHT & PARTNER

PATENTANWÄLTE UHLANDSTRASSE 14 ο · D 7000 STUTTGART 1

A 44 425 b Applicant: Gebr.Staiger GmbH

k - 185 factory for pain mechanics and

January 16, 1981 electrical engineering

Industriestrasse 7

77 42 St. Georgen (Schww.)

Description timing device

The invention relates to a timepiece with an hour shaft driven by a quartz-controlled clock drive having clockwork.

Such timepieces are used as time clocks, in particular as battery-operated time clocks, for displaying the normal Time of day widespread and contain a clock drive, in particular, in addition to the normal clock quartz used for control a stepping motor, and a clockwork with several parallel shafts, one of which is from the drive is driven and which are in drive connection with one another via gears around rotating drive shafts which rotate once in 12 or 24 hours, in an hour and in a minute around the time of day in hours, Display minutes and seconds.

Timing devices in the form of special clocks are also known, especially astronomical clocks, where a normal clock drive is used to drive relatively complex drives, especially of drives with planetary gears, and with their help, for example, the moon phase, the stand of the moon and / or the sun with regard to certain zodiac signs and other data can be displayed.

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January 16, 1981

During normal time clocks due to the mass production despite the high precision of the time display that can be achieved with modern quartz controllers can now be _r offered extremely inexpensive, are so-called astronomical ears and other timepieces that are not hour rhythm 24-operate with the normal, more or less Custom-made products and therefore very expensive in terms of production as well as maintenance and repair.

Based on this prior art, the invention is based on the object of specifying a timepiece which in a simple and inexpensive way also enables the measurement of time sequences that are not the 24-hour rhythm for the Determination of the time subject.

In the case of a timepiece, this task is as described at the beginning Kind according to the invention in that to display one of the 24-hour rhythm of the mean solar time The frequency of the clock differs according to the frequency of a normal quartz clock Control crystal is provided.

The basic idea of the invention is thus essentially to use the components of a normal time clock, but to control them one on one Use quartz tuned to a different frequency in order to display different time sequences from the normal time can, if necessary. with additional implementation of a speed ratio. .

According to a preferred embodiment of the invention, the timepiece is designed as a tide clock, in particular in such a way that the quartz control is tuned so that the hour wave for one full revolution a time of 24 hours results in 50'28.32 ", and that a tide scale is assigned to a pointer sitting on the hour shaft is the reading of the time until the next or since

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January 16, 1981

the last high or low tide permitted.

In another preferred embodiment of the invention the timepiece is designed as a moon phase clock, in particular in such a way that the pteuer quartz is tuned in such a way that that for a clockwork shaft for a full revolution a time of 2 χ 29d / 12h / 44 '/ 29 "results that on the clockwork shaft a pointer element with two circular surfaces is attached to each other with respect to the axis of the clockwork shaft which the pointer element is attached, are diametrically opposite at the same radial distance from the clockwork shaft and that a cover plate is provided, one for the viewer in front of the circular track the circular area of the pointer element lying circular opening with at least one with the diameter of the circular areas has substantially the same diameter.

A timepiece designed in this way as a moon phase watch according to the invention made possible by the interaction of the circular surfaces of the pointer element with the opening in the cover plate a direct pictorial representation of the moon phase, with a corresponding supplement Viewing window in the cover plate also shows the day of the relevant moon phase, calculated since the last one New moon can be displayed, i.e. the day number 14 or 15 for a full moon.

A timepiece according to the invention can also be used advantageously as an astronomical clock with one or more scales which allow, for example, the reading of the following data:

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January 16, 1981

1. Time of sunrise and sunset

2. Duration of sunshine

3. Position of the sun in relation to a certain constellation (Identification of the season)

4. Time of the rising and setting of the moon

5. Position of the moon in relation to a particular constellation.

Furthermore, in an embodiment of the invention, there is also the Possibility of several timepieces according to the invention with control crystals and tuned to different frequencies to combine various scales or display devices into a timepiece arrangement, which some of the above mentioned data and also possibly shows the time for at least one location. With such a Arrangement with several different display units there is also the possibility of changing the control frequencies to derive for the individual devices starting from a common base clock, which for example by divider circuits and / or circuits for frequency synthesis can be done.

In an embodiment of the invention, it has also proven to be advantageous proven when the moon phase is indicated by means of a ball that is visible through an opening has a light and a dark side and one full revolution for the duration of a synodic month executes.

Furthermore, it has proven to be advantageous if the display of sunrise and sunset or moonrise and moonset takes place with the help of diaphragms that are concentric with respect to an annular scale

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January 16, 1981

these can be pivoted via a curve control. Such diaphragms have the advantage that the daily curve of the Sun or the arc covered by the moon can be displayed immediately and very clearly, with the The length of the arch simultaneously indicates the length of the time interval between rise and fall, with this being the case however, an additional scale may also be present if necessary.

Further details and advantages of the invention are explained in more detail below with reference to drawings and / or are the subject of subclaims. Bs show:

Fig. 1 is a front view of a timepiece designed as a tide clock according to the invention;

FIG. 2 is a simplified block diagram of a timepiece according to FIG Invention;

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3 shows a front view of a timepiece designed as a moon phase watch according to the invention;

4 shows a front view of a timepiece designed as an astronomical clock according to the invention;

Fig. 5 is a front view of a timepiece assembly having a plurality of timepieces according to the invention and two normal time clocks;

6 shows a front view of a modified embodiment of a moon phase watch trained timepiece according to the invention, .....

Fig. 7 is a front view of a modified embodiment of an astronomical one Clock trained timepiece according to the invention and

Figures 8 and 9

Details of a curve control for the bezels of an astronomical clock. Fig. 7 as a front view (Fig. 8) or in section (Fig. 9).

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In detail, the timepiece designed as a tide clock 10 according to FIG. 1 has a scale 12 which is at the center is pierced by a pointer shaft 14 which carries a pointer 16. The circular scale 12 is along their Similar in size to the face of a normal watch, provided with time stamps, however, being in the 12 o'clock position an O-mark for the high water HW is located while at 6 o'clock there is an O-mark for the low water NW is located. In the running direction of the pointer 16 in front of the mentioned O marks, time marks are provided which show how many hours will pass before the next O mark is reached. In the one shown in Fig.l The position of the pointer 16 must therefore be one more until the high water HW or the highest water level occurs Time of 3 h 45 'elapses. In addition to the time stamps a sickle-shaped, differently colored area.18 is provided on the scale 12, which by its width in the radial direction also indicates optically how high the water level, starting from the low water NW as a reference value with size zero is already.

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A timepiece according to the invention, such as that shown in Fig The tide clock shown can now be based on a whole normal commercially available quartz-controlled timepiece can be obtained in a very simple manner, as follows to be explained in more detail in connection with FIG.

In detail, FIG. 2 shows a simplified block diagram of a timepiece in which a quartz 20 control or. Clock pulses for a motor 2 2 _f, in particular a stepping motor, by means of which a mechanical clockwork 24 is driven. If the quartz now oscillates at the frequency of 4.194304 MHz, which is often used for quartz-controlled clocks, then a normal time clock can be obtained with the circuit or arrangement according to FIG makes a full revolution and carries the hour hand on a normal time clock. The movement 24 works with a 24-storm rhythm or a 12-hour rhythm. This rhythm is based on the display of the normal time of day or the mean solar time applicable for the respective location. On the other hand, there is a rhythm for the tides, which depend on the attraction of the moon, ie for the alternation of ebb and flow, in which the time interval between the high water HW and the next low water NW is 0.25 χ 24 h 50 '28.32 ^. The hand 16 of the tide clock 10 according to FIG. 1 therefore does not have to make a full revolution during a time interval of 12 hours like a normal hour hand, but rather during a period of approximately 12 hours. Starting from a normal quartz-controlled time clock, this can be achieved in an extremely simple manner by comparing one with a normal quartz clock

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January 16, 1981

quartz with a frequency of 4.0522718 MHz, which is slightly detuned with the frequency given above, is used.

In a corresponding manner, a moon phase clock 30, as shown in FIG. 3, can also be implemented in an embodiment of the invention. It should be noted that a moon orbit lasts 29d / 12h / 44 '/ 29''. If, as shown in FIG. 3, a pointer element in the form of a light disk is provided behind a cover plate 32 facing the viewer, the upper half of which is darkly colored and a circular "moon" opening 34 is provided in the upper half 36 can circulate, on the side facing the viewer two dark circular surfaces 38 are provided, which are diametrically opposed to each other with respect to the disc center point and with the same radial distance and whose diameter is at least substantially equal to the diameter of the moon opening 34, then the characteristic images of the Generate waxing and waning moon, so that the moon phase is clearly displayed when the disc 36 is driven by the shaft of the clockwork at such a speed that it during a time interval of 2 χ 29d / 12h / 44 '/ 29 ¹¹ a executes a full revolution. This can be achieved with a normal clockwork for a time clock if you use a control crystal with a frequency of 4.260 931 MHz and if you reduce the rotation of a 24-hour wheel of the clockwork in a ratio of 1:60. When the basic principle of the invention is used, a moon phase clock can be implemented in a simple and inexpensive manner, which displays the respective moon phase in a characteristic way and is particularly advantageous, for example in connection with a tide clock, since the moon phase is based on the height of the water at high or low tide. Flood has a decisive influence, such that the

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The height of the tide at a full moon is higher than at a new moon.

In an embodiment of the invention, an astronomical clock 40 can also be realized, as shown in FIG is shown. This clock 40 has a one-piece rotatable dial 42, the two of which are diametrically opposed to each other opposing stationary markings, in particular in the form of transparent pointers 44, 46, are assigned. That Dial 42 itself has several scales concentric to one another, specifically a scale 48 on the outside with the names of the signs of the zodiac, then concentrically with them a scale 50 for the times of sunrise and, concentrically therewith, a third scale 52 for the times of the sunset. In addition, the rotatable dial 42 is concentric by a fixed scale ring 54 on which the sunshine duration for the respective calendar day can be read. Farther is in the 12 o'clock position within the dial ring 54 a fixed sun symbol opposite the dial 42 56 is provided, which can be firmly connected to the scale ring 54, for example.

In the astronomical clock according to FIG. 4, the pointer 46 indicates the time of sunrise on the central scale 50 of the dial 42. The scale 50 extends from the time 4 ^oo , which is in the position of the dial 42 shown in the 6 o'clock position, clockwise and counterclockwise over the times 5 °°, 6 °° and 7 °° to Time at 8 o'clock, which is shown in the 12 o'clock position. The sunrise takes place in the astronomical position shown in FIG

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6:00 am instead of 6:00 am. The time of sunset can be read with the help of the pointer 44 on the inner scale 52, on which, similarly to the scale 50, the Times between 4:00 pm and 8:00 pm are marked, whereby in the position shown for the sunset the The time is 6:00 p.m. The outer scale 48 of the dial 42 indicates in which constellation of the zodiac the sun is up. In the position shown, the sun symbol 56 is on the border between the Zodiac signs "Aries" and "Pisces". Finally, on the outer periphery of the dial 42 is opposite the fixed scale ring 54 an arrow mark 58, the reading of the sunshine duration, i.e. the Time interval between sunrise and sunset. For this purpose, the scale ring points out. starting from the 3 o'clock position, which is a duration of sunshine of 8 hours, clockwise and counterclockwise Brands with the digits 9 to 16, so that a total of 8 hours and sunshine 16 hours are displayed.

According to the duration of the ¹ solar year, the dial executes a full revolution during a time interval of -365.25 d, which can be achieved if, starting from a quartz frequency of 4.193619 MHz, the shaft for the dial 42 is rotated over a 24-hour clock. Drives the clockwork wheel with a reduction ratio of 1: 365.

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While individual forms of timing devices according to the invention were explained in detail above, Fig. 5 shows an arrangement with several timing devices in which a tide clock 10, a moon phase clock 30, an astronomical clock 40 with a sun dial and an \ astronomical clock 60 with a moon dial are arranged in the front plate 62 of a common housing 64. In addition, a normal time clock 66 is arranged in the front panel 62, which can display the mean solar time, for example, ie Central European time in Germany, as well as a normal time clock 68, which can be set exactly to the respective local time and according to which then For example, the original setting of the clocks 10, 30, 40, 60 can also take place. Finally, to supplement the display instruments in the front plate 62 of the housing 64 in the arrangement according to FIG.

The astronomical clock 60 with a lunar dial provided in the clock arrangement according to FIG. 5 is used in the same way as the astronomical clock 40 with a sun dial \ to display the times of moonrise and moonset and to display the position of the moon in relation to the signs of the zodiac. They are concentric to an inner fixed. Disc 72, a dial 74 with the signs of the zodiac and an outer scale ring 76 with a scale subdivided from 1 to 24 are provided. Furthermore, two diaphragms 78, 80 are provided, the upper edge of which in the drawing indicates the time of the rising of the moon (A) or of the setting of the moon (U) and which together

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at the same time show the duration of the time interval between moonrise and moonset very clearly. aside from that shows a pointer element 82 with a moon symbol, which is attached to the disk 72, the position of the Moon opposite the constellations of the zodiac.

On the astronomical clock 60, the apertures are 78, 80 Can be pivoted up and down concentrically to the stationary disc 72 by means of a cam mechanism .and form a rotating artificial horizon, through which the arc height of the lunar orbit is taken into account - i This one artificial horizon changes with the rhythm of the so-called tropical month, which lasts 27 d, 7 h, 43 ', 4.7 ". This time interval is also used to drive the dial 74 with the signs of the zodiac decisive which makes one full revolution during a tropical month ;.

In addition, the times for the moonrise and moonset must be determined depending on the duration of one orbit of the moon around the earth, taking into account the relative movement between earth and sun, i.e. depending on the so-called synodic orbital period, the duration of a synodic month being 29 , 5306 d. Accordingly, the outer scale ring 76 is driven in such a way that it executes a full revolution during the mentioned time interval, ie during a synodic month. '· ■ - ".

According to the invention, a speed of one full revolution in 27 d, 7h, 43 ¹ , 4.7 '' can be achieved with a normal clockwork, which is adapted to the tropical month,

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A 44 425 b
k - 176 styles. January 1981

that you equip the clockwork with a detuned eye quartz with a frequency of 4.144937 MHz and then the Speed of the 24-hour wheel reduced to a ratio of 1:27 / whereupon then the dial. 74 with this, under- * set speed can be driven. In addition, to drive the outer scale ring 76 with one of the synodic month corresponding speed of one full revolution in 29.5306 d a normal clockwork required; which is controlled by a crystal that oscillates at a frequency of 4.260975 MHz, whereby the rotation of the The 24-hour wheel of this movement is reduced in a ratio of 1:30. This additional clockwork can then for example can be used via a spur gear to drive the outer scale ring. In addition, the Cam control, for the diaphragms 78, 80 of the clockwork 'for the dial 74 (tropical month) driven in such a way, that for the angular path of the artificial horizon indicated by the screens 78, 80 during a tropical month results in an angular path of + .24 °.

FIG. 6 shows a moon phase clock 84 according to the invention which is modified compared to the exemplary embodiment according to FIG. 3, in which a dial 86 is provided, which is provided with a scale ranging from 0 (new moon) to 29 is. The day of the current lunar cycle can be read on this scale with the aid of a pointer 88. The pointer 88 can be driven by a normal clockwork, which is powered by ..a clock quartz with a frequency of 4.260931 MHz is controlled and on the output side has a reduction gear of 1:30 for the pointer 88, so that this corresponds to the duration of a synodic month within a "period of 29 d, 12 h, 44 ', 29" makes a full turn.

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The moon phase clock 84 also has a symbolic representation the moon phase has a ball 90 which is visible in a window 92 of the dial 86. The ball 90 has a light half and a dark half and is about a diametrically through the ball 90 through and the axis intersecting the dividing line between the light and dark sides of the ball is rotatable, the drive shaft for the ball 90 is driven at the same speed like the drive shaft for the pointer 88, so that the ball 90 also has a full one within a synodic month Rotation. For this purpose, the spherical shaft is connected to the pointer shaft via an angular gear with a Gear ratio of 1: 1 connected. The pointer 88 and the ball 90 rotate to the left or counterclockwise.

Fig. 7 of the drawing shows an embodiment of an astronomical clock 94 modified compared to the embodiment according to FIG are. For this purpose, a dial 96 with two concentric scales is provided, of which the inner scale 98 bears the names of the months and marks (V) to indicate the beginning of the seasons, while the outer scale 100 shows the names or symbols of the constellations of the zodiac sign is provided. The dial 96 is surrounded concentrically by an outer, fixed scale ring 102, which is provided with markings of approximately 4 to 20. The outer scale ring 100 bears a sun symbol as a mark 104, its position in relation to the scales

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98, 100 of the dial 96 the month, the season and displays the constellation. Furthermore, in the astronomical clock 94 according to FIG. 7, instead of the pointers 44, 46 of the clock 40 according to FIG. 4 two screens 106, 108 are provided, the upper ends of which indicate the time for sunrise (A) or show for the sunset (U) opposite the scale on the fixed scale ring 102, so that in the position of the diaphragms 106, 108 shown as the time for sunrise 5 o'clock and as the time for the Sunset is shown at 7 p.m. The two bezels can be pivoted up and down concentrically to the axis of rotation of the dial 96 with the aid of a cam gear and to a certain extent form an artificial horizon, which visually makes the day arc of the sun particularly good makes clear. The dial 96 is driven in the clock 94 by a clockwork, whose control quartz with a frequency of 4.134016 MHz works and the output side through a reduction gear with a Gear ratio of 1: 360 is equipped, so that the dial 96 in the course of a solar year, i. executes a full revolution during a period of 365.2422 d, the same movement also takes place Drive the curve control in such a way that the angular path of the artificial horizon in this period + _ 31.05 ° amounts to.

As the embodiment of FIG. 7 shows, the outer scale ring 102 in the clock 94 in its lower Part to be provided with a further scale, which ranges from about 16 to about 8, and on the one with respect to the lower edge the diaphragm 108 the duration of sunshine can be read off in the position of the clock 94 shown is about 14 hours.

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As to the details of the curve control for the aperture 106,108 of the watch 94 of FIG. 7, see FIG. 8 and 9 of the drawings _r which in plan view and in section show that a wheel 110 is provided with the clock 94, which in the course of a solar year executes a full revolution and has a hub designed as a hollow shaft, one end of which, namely the front one facing the viewer - left in FIG. In front of the bearing bracket 112, the diaphragms 106 and 108 are then placed freely rotatably on the hub of the wheel 110. Furthermore, a slide 114 with a central opening into which the hub of the wheel 110 protrudes freely is located in front of the diaphragms. A directional button 116, with which the dial 96 and a cam disc 118 are held in a rotationally fixed manner, is inserted with its slotted shaft into the hub of the wheel 110 and connected to it in a force-locking or frictional manner that the elements 96, 118 normally join the wheel 110 rotate, but can be rotated to set the astronomical clock 94 relative to the wheel 110.

The bearing bridge 112 has pins on its rear side 120, which are in associated longitudinal grooves 122 of the bearing bracket 112 are performed. On its front side, the slide 114 has a further pin 124, the in an eccentric to the axis of rotation of the cam 118 extending annular groove 126 of the same runs. When the wheel 112 is rotating, the slide 114 is thus activated by the interaction of its pin

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with the annular groove 126 of the cam 118 upwards and moved down / wherein it is moved by its pins 120, which run in the longitudinal grooves 122 of the bearing bracket 112, is guided in the vertical direction and secured against rotation.

The described up and down movement of the slide 114 is achieved by two outer pins 130 on the rear of the slide 114, the one in the associated transverse to the direction of movement of the slide 112 Engage elongated holes 132 of the diaphragms 106 and 108, transferred to the diaphragms 106 and 108, respectively. To this Way takes place in accordance with the eccentricity or, more generally, the shape of the control curve Annular groove 126 a pivoting of the diaphragms 106, 108 according to the changing day arc of the Sun over the course of a solar year. The outer journals 130 can also be assigned in this case Grooves of the bearing bracket 112 are guided, the central opening of which, as is clear from FIG. 8, as Long hole is formed.

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Claims (1)

HOEGER, STET-LRECRT & PARTNER PATENT LAWYERS UHLANDSTRASSE 14 ο D 7000 STUTTGART 1 A 44 425 b Applicant: Gebr. Staiger GmbH k - 185 precision mechanics factory and January 16, 1981 electrical engineering Industriestr. 7th
7742 St, Georgen (Schww.) Claims 1. Timepiece with a clock drive controlled by a quartz watch driven clockwork having an hour wave, characterized in that for Display of one of the 24-hour rhythms of the mean solar time The frequency of the clock differs according to the frequency of a normal quartz clock Control crystal is provided. 2. Timepiece according to claim 1, characterized in that it is designed as a tide clock (10)
is (Fig.l). 3. Timepiece according to claim 2, characterized in that the control crystal is coordinated such that a pointer shaft corresponding to the hour shaft of a normal clockwork for a full revolution
Time of 24 h 50 '28.32 "results, and that a pointer (16) sitting on the shaft (14) is assigned a tide scale (12) which enables the reading of the time to the next or since
the last high or low water (HW, NW) permitted. 4. Timepiece according to claim 1, characterized in that it is designed as a Hondphasenuhr (30)
is (Fig.3). -2- A 44 425 b -2- k - 185 January 16, 1981 5. Zeitmeßqerät according to claim 4, characterized in that that the control cruz is designed in such a way that it is a normal one for someone with a 24-hour raid Movement with a gear ratio of 1: 60 coupled shaft for a full revolution a time of 2 χ 29d / 12h / 44 '/ 29' "results in a, Pointer element (36) is mounted with two circular surfaces (38) which diametrically opposed to each other with respect to the shaft axis at the same radial distance, and that a cover plate (32) is provided, the one for the viewer in front of the circular track of the circular surfaces (38) of the pointer element (36) lying circular opening (34) with a diameter of the circular areas (38) are at least substantially the same Has diameter. 6. Timepiece according to claim 1, characterized in that that it is designed as an astronomical clock (40) with a scale (50) on which the position of the sun is related of a certain constellation for the relevant calendar day can be read. 7. Timepiece according to claim 1 or 7, characterized that it is designed as an astronomical clock (40) with a scale (50) at which the time the sunrise on the relevant calendar day can be read. 8. Timepiece according to one of claims 1, 6 and 7, characterized in that it is as astronomical Clock is designed with a scaleΪ52) on which the Time of sunset can be read on the relevant calendar day. -3- A 44 425 b k - 185 January 16, 1981 9. Timepiece according to one of claims 1 and 6 to 8, characterized in that it designed as an astronomical clock (40) with a scale (54) is on which the Duration of the time interval between sunrise and sunset can be read. 10. Timepiece according to claim 6 to 9 / characterized in that it is considered astronomical Clock (40) is designed with a rotatable dial (42) that the dial (42) with three concentric to each other Scales (48, 50, 52) are formed on which opposite fixed marks (44, 46, 56) the constellation, in which the sun is, the time of sunrise and the time of sunset can be read off are that a further fixed scale (54) is provided on which with respect to a on the dial (42) provided mark (58) the sunshine duration can be read off is that the drive of a shaft driving the dial (42) is via a 24-hour wheel of a normal Movement with a gear ratio of 1: takes place and that the frequency of the control crystal is chosen so that the dial for a full Rotation results in a time νοη * 365.25 days (Fig. 4) 11. Timepiece according to claim 1, characterized by dadur.ch, that it is an astronomical clock (60) with scales to indicate the position of the moon opposite a certain constellation of the zodiac sign to indicate the time of the moon rise, for Display of the time of the moonset and / or to display the duration of the time interval between the moonrise A 44 425 b k - 185 January 16, 1981 and moonset is formed. 12. Timepiece according to one of claims 1 to 11, characterized in that it is with further Timing devices is combined into a timing device arrangement (Figure 5). 13. Timepiece according to claim 12, characterized in that that divider circuits and / or circuits are provided for frequency synthesis, with the help of which the control frequencies for the individual timing devices of the timing device arrangement can be derived from a common base clock. 14. Timepiece according to one of claims 1 to 13, characterized characterized in that it is designed as a battery-powered timepiece. 15. Timepiece according to claim 4, i.e. characterized by that the control crystal is tuned in such a way that for one with a 24-hour wheel a normal one Movement coupled with a gear ratio of 1:30 Shaft for one full revolution a time of 29d / 12h / 44 '/ 29' shows that a pointer (88) is mounted on this shaft, the relative to a dial (86) is rotatable that a scale with a division of 0-29, on which the respective day of the moon phase can be read. and that in the dial (86) an opening (92) is provided, behind which one with the Speed of the pointer shaft driven, a light and a dark half having, rotatable counterclockwise Ball (90) provided for symbolic display of the moon phase is (Fig. 6). -5- Ά 44 425 b k - 176 - 5 - January 16, 1981 16. Timepiece according to claim 6-9, characterized by that it is an astronomical clock (94) with a rotatable Dial (96) is designed that the dial (96) with two concentric scales (98, 100) is provided, on which opposite a fixed mark (104) the constellation in which the sun is located, the month and the season can be read, · that a further fixed Scale (102) is provided on the two, forming an artificial horizon, by a skid control drivable shutters (106, 108) the time of sunrise, the time of sunset and the Sunshine duration can be read that the drive of the cam control and one driving the dial (96) Shaft via a 24-hour wheel of a normal clockwork a gear ratio of 1: 360 and that the Frequency of the control crystal for the clockwork is chosen so that the dial for one full revolution gives a time of about 365.25 days (Fig. 7). 17. Timepiece according to claim 11, characterized in that it is designed as an astronomical clock (60) with a rotatable dial (74) which carries a scale on the opposite of a fixed mark (82) the zodiac sign can be read in which the Moon stands that the dial (74) is surrounded concentrically by a rotatable scale ring (76), which carries a scale on the. with regard to two diaphragms (78, 80), the time of the rising of the moon and the time of the setting of the moon can be read off that the diaphragms by means of a curve control during the acidic of a tropical month at an angle of + _ 24 ° - 5a - A 44 425 b ^ H - 189 -Sa- January 16, 1981 are pivotable that the dial (74) from a normal Movement with a control quartz with a frequency of 4/144937 MHz and a reduction gear on the output side with a gear ratio of 1:27 during a tropical month from 27d / 7h / 43 '/ 4.7 "to a full one Revolution is drivable and that the outer scale ring (76) by a normal clockwork with a control crystal with a Frequency of 4.260975 MHz and an output-side reduction gear with a transmission ratio of 1:30 during a tropical month of 27d / 7h / 43 · / 4.7 " can be driven to a full revolution.