EP2034374A2 - Clock - Google Patents

Abstract

The watch has a main force storage i.e. barrel, through which a retensioning element is drivably and rotatably guided in cyclic intervals at a retensioning axis by a retensioning controller, via a gear train. A storage coil spring (6) is retensioned by the storage, which has an end connected with the element. The spring has another end connected with a wheel that rotatably drives a clock mechanism. The wheel is in contact with a train of an escapement. An interval switchable device i.e. minute hand drive, is drivable and rotatable in cyclic intervals by an element of the gear train.

Description

The invention relates to a clock, in particular a wristwatch, with a main power storage, is rotatably driven by a tension over a Nachspannwerks a Nachspannachse controlled by a Nachspannsteuerung in cyclic steps by means of a gear train and a connected with its one end connected to the Nachspannelement retensioning spring, wherein the other end of the accumulator coil spring is connected to a clockwise rotatably driving wheel which meshes with the gear train of the escapement.

In such timepieces, the accumulator coil spring is tensioned by the same amount at equally large intervals set by the mechanism. This provides the oscillating system of the clock with a constant torque. This is required if the torque provided by the main energy store is subject to strong fluctuations. The reason for this can be, for example, a high running time of the clock or components of the clock, which are additionally driven by the main power storage and have a sharply fluctuating torque requirement.

By the Nachspannwerk these torque fluctuations are eliminated, which improves the accuracy of the clock. In this case, the driving part of the movement does not move uniformly through the control of the tensioning device but in angular steps. The size of these steps is determined by the translation of the respective gear train. The time intervals are determined by the control of the tensioning device. The output member is driven by the accumulator coil spring and moves uniformly.

The object of the invention is to provide a clock of the type mentioned, which allows a functional extension.

This object is achieved in that is rotatably driven by an element of the gear train from the main power storage for Nachspannelement another step-switching device in cyclic steps.

Thus, the cyclic steps generated by the Nachspannsteuerung for tensioning the coil spring in dual function can be used for other functions that requires a control in cyclic steps.

This double use leads to a reduction of the required installation space.

In a time-exact work of the Nachspannsteuerung can, from the element of the gear train directly or indirectly a minute wheel in cyclic steps rotatably driven, whereby a so-called "jumping minute" is obtained, in which the pointer always points to a minute line of a minute scale.

In this case, preferably, the Nachspannelement cyclically rotatable in minute increments and the other step-switchable device a minute hand drive with a minute hand carrying minute tube, which is rotatably driven by 6 ° per step.

In order to ensure an exact pointer position, a minute gear having 60 teeth can be arranged on the minute tube, in the tooth spaces of which a minute catch of a minute detent spring can be engaged.

Of course, it is also possible that a detent is mounted on an engaging with the minute tube further shaft.

In addition, a gear may be arranged on the minute tube, by means of which a change wheel an hour hand carrying hour wheel with one revolution per hour is rotatably driven.

From the peristaltic tube, further ancillary means such as e.g. a minute Repetitionswerk drivable or a work of an alarm clock can be triggered to the minute.

Another way to use the exact timing of the Nachspannsteuerung is that of the element of the gear train directly or indirectly an hour wheel is rotatably driven in cyclic steps.

Thus, a single-hand watch is feasible, which retains the timeless and soothing radiance of such a clock and still allows the time to read up on a few seconds accurately.

For this purpose, the main memory is preferably arranged in the middle of the clock and connected to the hour hand, for example, from the main memory in 144 cyclic 5-minute increments of 2.5 ° hour tube is rotatably driven.

For the exact hand position of the hour indicator can be arranged on the hour tube a 144 teeth having hour ratchet, engages in the tooth gaps an hour detent a Stundenrastfeder.

But it is also possible that of the main memory in 72 cyclic 10-minute increments of 5 ° an hour tube is rotatably driven, wherein on the hour tube a 72 teeth having hour ratchet can be arranged in the tooth gaps an hour catch an hour detent spring is engageable.

In this case, if the driven drive driven by the accumulator coil spring has a shaft which rotates once for 5 or 10 minutes and carries a minute hand, the minutes between the switching steps of the hour hand can be read well since the minute hand moves continuously.

A third way to use the time-exact operation of Nachspannsteuerung is that of the element of the gear train directly or indirectly a dial a digital time display is rotatably driven in cyclic steps.

In this case, e.g. the dial will be a minute dial and / or a hour dial.

In order to allow a large representation of the digits in the limited space, can be rotatably driven by a dial axis of the element of the gear train a single digits carrying Einzelziffernscheibe and a ten-digit numerical disc, which are arranged parallel to each other.

Preferably, the main power storage is a barrel.

The Nachspannelement may be a Kleinbodenrad and the clockwork rotatably driving wheel to the first Kleinbodenrad coaxially arranged second Kleinbodenrad be relatively rotatable to the first Kleinbodenrad by a limited angle.

An exact cycle control is effected in that a rotatably mounted on a first axis wheel of the movement of the second Kleinbodenrad is rotatably driven, wherein on the first axis, a control is arranged, through which a control part is actuated, which is engageable in a gear, which in engagement with the first Kleinbodenrad stands.

In this case, the arranged on the first axis wheel of the movement can be a second wheel.

A leading to an exact cycle control, simple design is that on the first axis a revolving around the first axis lever stone is arranged, which is engageable in a fork at one end of a first arm of a lever, wherein the lever by the in the fork engaging lever block is pivotable against a spring force from a first end position to a second end position about a pivot axis parallel to the first axis, with a second arm of the lever having a first locking element inserted into the tooth circulation area of one of the teeth of a first one multi-toothed wheel is pivotable, with a third arm of the lever having a second locking element which is pivotable in the circumferential region of the teeth of a second single or multi-toothed wheel, wherein the first wheel and the second wheel of the first Kleinbodenrad are rotatably driven, said in the first end position of the lever, the first blocking element in the Zahnumlaufbere I pivoted the first wheel and the second locking element is pivoted out of the tooth circulation area of the second wheel, and wherein pivoted in the second end position of the lever, the second locking element in the tooth circulation area of the second wheel and the first blocking element is pivoted out of the tooth circulation area of the first wheel.

For accurate positioning of the lever in its first end position, the pivoting of the lever in the first end position may be limited by a stop.

In order to adjust this end position, the stop can be adjustably adjusted in the pivoting movement direction of the lever.

For precise adjustment of the position of the teeth of the first wheel, the first single or multi-toothed wheel can be arranged rotatably adjustable about the second axis on a second axis parallel to the first axis.

In the same way, the position of the teeth of the second wheel can be adjusted in that the second single or multi-toothed wheel is rotatably arranged on a third axis parallel to the first axis about the third axis adjustable.

To adjust the lever block, the lever block on the first axis about the first axis to be rotatable adjustable.

This is possible with a simple structure in that the lever block is connected via a friction clutch with the first axis.

In order to ensure an exact drop of the fork from the lever block, the lever block may have a parallel to the first axis positioning edge through which the fork is pivotally acted upon.

Is arranged at the free end of the first arm of the lever in a plane parallel to the fork, a knife part which extends in Längserstrekkungsrichtung of the lever and during non-loading of the fork by the lever block with its free end on a non-rotatably connected to the hurdle curve in Appendix is, then prevented at a wrong time by vibrations caused movement of the lever.

To damp the movement of the Nachspannens can be driven by the second wheel, a rotary damping device which may be a rotatably mounted about a Flügelradachse mounted Windflügelrad.

Figur 1

eine perspektivische Ansicht eines Nachspannwerks

Figur 2

eine Draufsicht des Nachspannwerks nach Figur 1

Figur 3

einen Schnitt entlang der Linie III - III in Figur 2

Figur 4

einen Schnitt entlang der Linie IV - IV in Figur 2

Figur 5

eine Draufsicht des Nachspannwerks nach Figur 1 in einer ersten Ablaufstellung

Figur 6

eine Draufsicht des Nachspannwerks nach Figur 1 in einer zweiten Ablaufstellung

Figur 7

eine Draufsicht des Nachspannwerks nach Figur 1 in einer dritten Ablaufstellung

Figur 8

eine Draufsicht des Nachspannwerks nach Figur 1 in einer vierten Ablaufstellung

Figur 9

eine Draufsicht des Nachspannwerks nach Figur 1 in einer fünften Ablaufstellung

Figur 10

eine Draufsicht des Nachspannwerks nach Figur 1 in einer Blockierstellung

Figur 11

ein Diagramm des Drehmoments über der Gangdauer

Figur 12

eine schematische Darstellung des Antriebes eines springenden Minutenzeigers einer Uhr

Figur 13

eine schematische Darstellung des Antriebes einer Einzeigeruhr mit exzentrischem Minutenzeiger

Figur 14

eine schematische Darstellung des Antriebes einer digital anzeigenden Uhr.

Embodiments of the invention are illustrated in the drawings and will be described in more detail below. Show it

FIG. 1

a perspective view of a tensioning device

FIG. 2

a plan view of the tensioning device after FIG. 1

FIG. 3

a section along the line III - III in FIG. 2

FIG. 4

a section along the line IV - IV in FIG. 2

FIG. 5

a plan view of the tensioning device after FIG. 1 in a first expiry position

FIG. 6

a plan view of the tensioning device after FIG. 1 in a second expiry position

FIG. 7

a plan view of the tensioning device after FIG. 1 in a third expiry position

FIG. 8

a plan view of the tensioning device after FIG. 1 in a fourth expiry position

FIG. 9

a plan view of the tensioning device after FIG. 1 in a fifth expiry position

FIG. 10

a plan view of the tensioning device after FIG. 1 in a blocking position

FIG. 11

a graph of torque over the gear duration

FIG. 12

a schematic representation of the drive of a jumping minute hand of a clock

FIG. 13

a schematic representation of the drive of a single-hand watch with eccentric minute hand

FIG. 14

a schematic representation of the drive of a digitally indicating clock.

That in the FIGS. 1 to 10 shown tensioning device has a drive axle 1, which is rotatably driven by a non-illustrated drive spring of a barrel in cyclic steps.

On the drive axle 1, a drive 2 is fixed, through which a minute wheel 73 is rotatably driven.

A first Kleinbodenrad 3 is also fixedly disposed on the drive axle 1 and engages in a arranged on a parallel to the drive axis 1 second axis 4 drive wheel 5 a.

To the drive axle 1, a storage spiral spring 6 is arranged, which is connected with its outer ends by means of an outer spiral attachment 7 with the first Kleinbodenrad 3.

With its inner end, the spiral storage spring 6 is fixedly connected to a hub 8 of a second Kleinbodenrades 9, which is rotatably supported by means of the hub 8 on the drive axle 1.

By the second Kleinbodenrad 9, a first axis 10 is continuously rotatably driven, on which a second wheel 11 is arranged. The second wheel 11 is in engagement with a pinion 35 of an escape wheel 36 for inhibiting the oscillating system of the watch.

At one free end portion of the first axis 10, a disc spring 13 is supported at its central area on a shoulder of the first axis 10, with its radially outer circumferential region with bias on a radial extension 14 of a on the first axis 10th freely rotatably arranged support member 12 is in abutment and so forms a friction clutch.

The carrier part 12 is supported on its end facing away from the disc spring 13 on a further shoulder of the first axis 10.

Parallel to the first axis 10, a lever block 15 is arranged on the radial extension 14.

In a plane parallel to the radial plane of the lever block 15, the support part 12 is formed at its end facing away from the disc spring 13 as a knife roller 16 with the first axis 10 concentrically circumferential curve 17 which has a recess 18 over a portion of its circumference.

The lever block 15 is arranged at the one transition region from the recess 18 to the curve 17.

To a parallel to the first axis 10 pivot axis 19, a three-armed lever 20 is pivotally mounted, the first arm 21 at its free end a fork 22, in which upon rotation of the first axis 10 of the lever block 15 is hineinbewegbar and the lever 20 of a first End position pivots in a second end position, to then move out of the fork 22 again.

The lever 10 is urged by a spring arm 23 in its first end position, wherein the first end position is defined by a stop on which the lever 10 comes into abutment.

The stop consists of a rotatably adjustable eccentric 24, so that the first end position is adjustable.

At the free end of a second arm 25 of the lever 20 is designed as a first pallet 26 formed first locking element, while at the free end of a third arm 27 designed as a second pallet 28 second locking element is arranged.

In the first end position of the lever 20, the first pallet 26 is pivoted into the tooth circulation area of a tooth 29 of a first single-toothed wheel 30, which is arranged on the second axis 4.

In the second end position of the lever 20, the first pallet 26 is outside the tooth circulation area of the tooth 29, while the second pallet 28 is in the tooth circulation area of a tooth of a second one Rades 32 is pivoted, which is arranged on a third axis 33 parallel to the first axis 10.

In the first end position, the second pallet 28 is located outside the tooth circulation area of the tooth 31 of the second wheel 32.

The third axis 33 carries a second drive wheel 34 which is rotatably driven by the first low-level gear 3.

The first wheel 30 is rotatable about the second axis 4 and the second wheel 32 about the third axis 33 rotatable.

In the first end position of the lever 20, the first wheel 30 is prevented from rotating by the contact of the tooth 29 on the first pallet 26.

Thus, via the second axis 4 and the drive wheel 5 and the first Kleinbodenrad 3 is blocked, so that the drive spring of the barrel, the first Kleinbodenrad 3 can not drive to a tensioning of the accumulator coil spring 6.

About the acted upon by the accumulator coil spring 6 second Kleinbodenrad 9 but controlled by the oscillating system is a continuous rotary drive of the first axis 10 and with it the lever block 15th

As a result, the control of the tensioning device is performed by the oscillating system of the clock.

In this case, the lever block 15 engages in the fork 22 and pivots with it the lever 20 from its first end position in the direction of its second end position.

As a result, the first pallet 26 is moved out of the tooth circulation area of the tooth 29 and the first wheel is released.

At the same time, the second pallet 28 is moved into the tooth circulation area of the tooth 31.

Under the tension of the drive spring of the barrel, there is now a short rotation of the drive axle 1 and with it the first minor wheel 3.

By way of the second drive wheel 34, the third axis 33 is rotated until the tooth 31 reaches the second pallet 28.

After further pivoting of the lever 20 through the lever block 15, the lever block 15 moves gradually back out of the fork 22 to get out of engagement after the end of the entrainment by an actuating edge 37 of the lever block 15 of this.

Due to the relatively high force of the spring arm 23, the lever 20 is rapidly pivoted from its second end position to its first end position, the first pallet 26 being moved out into the tooth circulation area of the tooth 29 and the second pallet 28 being moved out of the tooth circulation area of the tooth 31.

Under the tension of the drive spring of the barrel there is a rotary drive of the drive axle and the first low-level wheel 3 and the first wheel 30 and the second wheel 32 until the tooth 29 of the first wheel 30 strikes the first pallet 26 and a further rotation of the first wheel 30 and blocked with him the first low-level wheel 3.

As a result of the rotation of the first low-order wheel 3 and the outer spiral fastening 7, there is a cycle of re-tensioning of the accumulator spiral spring 6, through which the escapement and the oscillating system are continuously driven via the secondary wheel 11.

In the plane of the knife roller 16 protrudes parallel to the fork 22, a blade member 38 in the longitudinal direction of the first arm 21, which slides with its tip during the phase of the first end position of the lever 20 on the curve 17.

This prevents that the lever 20 can not move unintentionally out of its first end position in this phase. This could otherwise happen due to shocks.

On the third axis 33, a damping wheel 39 is arranged parallel to the second wheel 32, which engages in a pinion 40 on a Flügelradachse 41 which carries a Windflügelrad 42.

Since in the Nachspannbewegung and the Windflügelrad 42 is driven, the Nachspannbewegung is damped, so that it does not come to a hard abutment of the teeth 29 and 31 on the pallets 26 and 28 and thus rebounding movements.

At the first Kleinbodenrad 3 a stop pin 43 is parallel to the drive axle 1 arranged, which projects into a concentric slot 44 of the second Kleinbodenrads 9 and thus limits the relative rotatability of the two low-floor wheels 3 and 9 to each other. As a result, the clock can still run even when the accumulator coil spring 6 can no longer be tensioned.

When the force of the drive spring of the barrel is reduced such that it can no longer completely retighten the accumulator coil spring 6, the lever 20 seated with its second pallet 28 on a radially encircling locking surface 45 of the second wheel 32 holds the movement over the lever block 15 and the Second wheel 11 on.

This avoids malfunctions.

In FIG. 11 the torque is plotted against the duration of the clock that supplies the clock's oscillating system. In this case, the curve 46 shows the torque output by the drive spring of the barrel, while the curve 47 shows the torque output by the Nachspannwerk to the maximum gear duration of a clock with Nachspannwerk.

It can be seen from the curve 46 that the torque provided by the drive spring is subject to strong fluctuations. The reason for this can be a high running time of the clock or components of the clock, which are additionally driven by the barrel and have a highly fluctuating torque requirement.

As the curve 47 shows, these torque fluctuations are eliminated by the Nachspannwerk, whereby the accuracy of the clock improves.

In the embodiments of the FIGS. 12 to 14 takes place according to the embodiment of FIGS. 1 to 10 from a spring 48 via an arranged on an axle 53 intermediate 49, a drive of the drive axle 1 and the first low-order wheel third

The accumulator coil spring 6 can be clamped cyclically via the outer spiral attachment 7, the second small-end wheel 9 being driven continuously by the accumulator coil spring 6.

This second Kleinbodenrad 9 drives a wheel 50, which is arranged on the first axis 10.

Via a gear train 61, an escapement 51 of the oscillating system of the clock is driven by the first axle 10.

The first axis 10 carries a control 52 for actuating a Nachspannsteuerung, not shown, the Nachspannsteuerung the embodiment of FIGS. 1 to 10 can correspond, by which the Nachspannwerk is controlled rotatably driven in cyclic steps.

In FIG. 12 is arranged on the axis 53 with this circumferentially a minute detent spring 54 which engages with a minute catch 55 in the tooth gaps of a minute hand 60 carrying a minute gear 56 with 60 teeth. The minute ratchet wheel 56 is driven by the barrel 48 via the shaft 53 and the minute catch 55 engaging the tooth gaps of the minute ratchet wheel 56.

In an adjustment of the minute hand 60 by a device, not shown, for example, for correction purposes, the minute catch 55 engages the teeth of the minute ratchet wheel 56. Since the minute catch 55 snaps into a tooth gap of the minute ratchet wheel 56 after the end of this adjustment, an adjustment is only possible exactly in full minute steps ,

Of the minute ratchet wheel 56, an hour wheel 58 carrying an hour hand 58 can be rotatably driven by means of a change wheel 57 at one revolution per hour.

The minute hand 60 jumps in minute steps according to the cyclic Nachspannschritten the Nachspannwerks.

In FIG. 13 is on the first axis 10, a minute hand 60 'is arranged, which is driven continuously by the Nachspannwerk.

With the barrel 48 rotating in 144 cyclic 5-minute increments a tube 62 is connected, which carries a rotating with the tube 62 hours detent spring 63.

In this case, the hour detent spring 63 engages with an hour detent 64 in the tooth gaps of a 144 teeth having hour ratchet wheel 65, which is arranged on a hour tube 74 which carries an hour hand 58 '.

The hour tube 74 is driven by the barrel 48 via the tube 62 and the hour latch 64 engaging the tooth gaps of the hour ratchet wheel 65.

With an adjustment of the hour hand 58 'by means, not shown, e.g. For correction purposes, the hour catch 64 engages the teeth of the hour ratchet wheel 65. Since the hour catch 64 snaps back into a tooth gap of the hour ratchet wheel 65 after the end of this adjustment process, an adjustment is only possible exactly in full 5-minute increments.

In FIG. 14 For example, the minutes are displayed as bouncing minutes with numerals made up of ten digits arranged on a ten-dial 66 and one-digits arranged on a single dial 67.

From the drive axle 1, the single-digit dial 67 is driven in sixty cyclic steps per hour via a gear stage 68.

From the gear stage 68, an idler gear 69 is driven, which carries a control element 70, by means of which a ratchet wheel 71 can be indexed in six steps per hour, the ratchet wheel 71 being arranged on a tens shaft 72 carrying the ten-number plate 66.

LIST OF REFERENCE NUMBERS

1

drive axle

2

shoot

3

first Kleinbodenrad

4

second axis

5

drive wheel

6

Memory coiled spring

7

outer spiral fastening

8th

hub

9

second Kleinbodenrad

10

first axis

11

Third wheel

12

support part

13

Woodruff

14

radial extension

15

impulse pin

16

knife role

17

Curve

18

recess

19

swivel axis

20

lever

21

first arm

22

fork

23

spring arm

24

eccentric

25

second arm

26

first pallet

27

third arm

28

second palette

29

tooth

30

first bike

31

tooth

32

second wheel

33

third axis

34

second drive wheel

35

pinion

36

escape wheel

37

Vice edge

38

knife part

39

damping wheel

40

pinion

41

impeller shaft

42

Windflügelrad

43

stop pin

44

Long hole

45

blocking surface

46

Curve

47

Curve

48

barrel

49

idler

50

wheel

51

inhibition

52

control

53

axis

54

Minutes detent spring

55

minute jumper

56

Minutenrastrad

57

change gear

58

hour hand

58 '

hour hand

59

hour wheel

60

minute hand

60 '

minute hand

61

train

62

pipe

63

Hour detent spring

64

hours detent

65

Stundenrastrad

66

Ten digits disk

67

A number plate

68

gear stage

69

idler

70

control

71

ratchet

72

Ten wave

73

minute wheel

74

hour tube

Claims (18)

Clock, in particular wristwatch, with a main power storage, is rotatably driven by a Nachspannwerks a Nachspannachse controlled by a Nachspannsteuerung in cyclic steps by a gear train and a tensioned at one end connected to the Nachspannelement memory coil spring, wherein the other end of the memory coil spring is connected to a clockwise rotatably driving wheel, which is in engagement with the gear train of the escapement, characterized in that an element of the gear train from the main power storage to Nachspannelement another step-switchable device is rotatably driven in cyclic steps. Clock according to Claim 1, characterized in that a minute wheel can be driven rotatably in cyclic steps directly or indirectly by the element of the gear train. Clock according to claim 2, characterized in that the Nachspannelement cyclically rotatable in minute increments and the further step-switchable device a minute hand drive with a a minute hand (60, 60 ') carrying a minute tube which is rotatably drivable by 6 ° per step. Clock according to Claim 3, characterized in that a minute-ratchet wheel (56) having 60 teeth is arranged on the minute tube, in whose tooth gaps a minute catch (55) of a minute-detent spring (54) can be engaged. Clock according to one of Claims 3 and 4, characterized in that a gearwheel is arranged on the minute tube, by means of which an hour wheel (59) carrying an hour hand (58) can be rotatably driven with one revolution per hour via a change wheel (57). Clock according to claim 1, characterized in that the element of the gear train directly or indirectly an hour wheel is rotatably driven in cyclic steps. Clock according to claim 6, characterized in that from the main memory in 144 cyclic 5-minute increments of 2.5 °, a hour tube (62) is rotatably driven. Clock according to Claim 6, characterized in that an hour tube can be driven in rotation by the main memory in 72 cyclical 10-minute increments of 5 °. Clock according to Claim 1, characterized in that a dial of a digital time display can be driven rotatably in cyclic steps directly or indirectly by the element of the gear train. Clock according to one of the preceding claims, characterized in that the main energy accumulator is a barrel (48). Clock according to one of the preceding claims, characterized in that the Nachspannelement a first Kleinbodenrad (3) and the clockwise rotatably driving wheel to the first Kleinbodenrad (3) coaxially arranged second Kleinbodenrad (9) to the first Kleinbodenrad (3) to a limited angle is relatively rotatable. Clock according to claim 11, characterized in that a on a first axis (10) non-rotatably mounted wheel of the movement of the second Kleinbodenrad (9) is rotatably driven, wherein on the first axis (10) a control element is arranged through the Control part is actuated, which is engageable in a gear which is in engagement with the first Kleinbodenrad (3). A watch according to claim 11, characterized in that on the first axis (10) there is arranged a lever block (15) encircling the first axis (10) and fitting into a fork (22) at one end of a first arm (21) of a fork Lever (20) is engageable, wherein the lever (20) by the in the fork (22) engaging lever block (15) against a spring force from a first end position to a second end position about a first axis (10) parallel pivot axis (19) is pivotable, with a second arm (25) of the lever (20) having a first locking element, which is pivotable in the tooth circulation area of one of the teeth (29) of a first single- or multi-toothed wheel (30), with a third arm ( 27) of the lever (20) having a second locking element which is pivotable in the circulation area of the teeth (31) of a second single or multi-toothed wheel (32), wherein the first wheel (30) and the second wheel (32) from the first Kleinbodenrad (3) are rotatably driven, wherein in the first Endstellu ng of the lever (20), the first blocking element is pivoted into the tooth circulation area of the first wheel (30) and the second blocking element is pivoted out of the tooth circulation area of the second wheel (32), and wherein in the second end position of the lever (20), the second blocking element pivoted into the tooth circulation area of the second wheel (32) and the first blocking element is pivoted out of the tooth circulation area of the first wheel (30). Clock according to claim 13, characterized in that the lever block on the first axis (10) about the first axis (10) is rotatably adjustable. A watch according to claim 14, characterized in that the lever is connected to the first axis (10) via a friction coupling. Clock according to Claim 13, characterized in that the lever block (15) has an actuating edge (37) which is parallel to the first axis (10) and by means of which the fork (22) can be acted upon in a pivotable manner. Watch according to one of claims 13 to 16, characterized in that at the free end of the first arm (21) of the lever (20) in a plane parallel to the fork (22) a knife part (38) is arranged, which extends in the longitudinal direction of the Lever (20) and during the non-loading of the fork (22) through the lever block (15) with its free end to a with the lever block (15) rotatably connected curve (17) in abutment. Clock according to claim 17, characterized in that a rotary damping device can be driven by the second wheel (32).

Images