DE1959627A1 - Electromagnetic counter - Google Patents

Description

Dipl.-Ing. Heini Lasser. Patent attorney D - 8 Munich 81, Cosimastrafce 81 ■ Telephone: (08

MATSUSHITA DENKO K.K.

1048 Oaza Kadoma, Kadoma-shi, Osaka / JAPAN L 8916 Gg / he,

ELECTROMAGNETIC COUNTER

The invention relates to an electromagnetic counter with at least one electromagnet for rotating the fleien end at least one magnet armature and with an anchoring part held in connection with this for the rotation of several Number wheels.

Electromagnetic counters of the aforementioned type have inter alia the disadvantage that with a successive rotation of one of the number wheels during the accumulative Counting operation by pinion or »ratchet wheels this a recoil force from the individual with the individual number wheels connected gears must catch, it then before-r it can happen that the sum of this recoil force and one of the retracting the ratchet wheels or pinions Feathers; resulting force is greater than the force of a Return spring, which is used to reset the individual gear wheels is used in its zero position. This in turn has the PoIge that the ratchet wheels or pinions disengage mlit the gears connected to the number wheels resulting in an incorrect count.

The invention is based on the task, an electromagnetic one To create meters which do not have the disadvantages noted above. To solve this problem is according to the invention for an electromagnetic counter with number wheels, which by the attraction of an or

009847/0890

BADORiGiNAL

DIpI.-Ing. Heinz Lesser, patent attorney D - 8 Munich 81. Cosimastrafje 81 · Telephone: (0811) 48 38 20

-2 -

a plurality of magnet armatures operated by at least one electromagnet are rotated, a second lever is provided between a first drive lever and a rotating frame for to arrange the Einseinen ratchet wheels or pinions in such a way that the axes of rotation between the rotating frame and the second lever and substantially in common between the first and second levers and the axis of rotation of the first lever Lie level. With such an arrangement it can then be ensured that the ratchet wheels practically do not except Active connection with the number wheels. Come, even if on the switching wheels when the number wheels are switched on a recoil force acts.

The electromagnetic counter according to the invention has further advantages, which are cataloged as follows: The force of the return springs can be kept small, so that the automatic return by means of a return " Electromagnet goes easier, so the electromagnet can be made smaller so that the electromagnetic Counter according to the invention 'builds relatively small. The distance between the number wheels and the drive and reset electromagnets are selected to be smaller by also providing an operating mechanism, which'the zero positions of the number wheels for display brings. The length dimension of the electromagnetic counter becomes smaller as a result, so that the space required for its assembly is also smaller. It can still increase the length of the anchoring arm can be kept shorter, which has the advantage: brings a reduction in the load acting on the drive magnet. The inventive counter can therefore be essential work faster. It can also be used for resetting the anchoring part to rotate the number wheels force required and the force required to reset the operating * required force by a single return spring to provide. This can reduce the number of

009847/0890

Dipl.-Ing. Heinz Le "", patent attorney D - 8 Möndien 81, Cosimastrafee 81 · Telephone: (0611) 48 38 20

Individual parts are reduced compared to the known counters, so that the counter according to the invention is much simpler builds and can therefore be installed much faster and easier. It is for the according to the invention Counter still possible to use a transparent "plate, which is integral with a lens part, over both of its end edges to be connected to an outer frame part, so that the meter does not need to be equipped with a separate lens and therefore the meter does not have to be equipped with a stiffening part that covers the two end edges of the Frame would have to be bridged. The transparent plate thus gives the frame sufficient strength and creates with respect to a possible loosening of a separately arranged lens is no problem. It is related to the counter according to the invention Finally, it is still possible to fix the connecting piece to the frame merely by placing it in a recess the same is inserted so as to cover the frame within the inner surface of a housing. The inventive Counters can thus be weeent in an even further simplification lent easier to assemble and dismantle and the replacement of the connectors is much easier.

Further features and advantages of the counter according to the invention will become apparent from the following description in connection with recognizable in the drawing. Show it:

Figures IA and

IB perspective views of a housing to the Un

provision: of the meter according to the invention,

Figures 2A and
2 B

Perspective views of the meter according to the invention after its submission in the Housing according to Figures 1,

FIGS. 3A to 3F show the counter according to the invention in different

0 09847 / OB 90

BATH ORIGINAL Dipl.-lng. Heinz L * «er. Patent attorney D - 8 Mönchen 81, Cosimastrafje 81 Telephone: (0811) 48 38 20

Figure 4

Figure 5

different views, namely in a view from below, a front view, a Rear view, right view, top view and left view,

The individual parts of the tough in a perspective view and exploded view lers according to Figure 3,

the structural unit of the number wheels of the counter according to the invention in a plan view

FIGS. 6A to 6C show a number wheel in a view from the left, in

a front view and a view from the right,

Figures 7A to JC a ratchet wheel or pinion of the invention

according to the counter in a view from the left * in a front view and in a View from the right, * ' '

Figures 8A and 8B in perspective view and partially exploded Representation of the reset mechanism of the counter according to the invention for the number wheels,

Figure 9

Figure 10

a detail of the counter according to the invention to illustrate the assembly the connectors,

a schematic view for illustration the mode of operation of the counter according to the invention,

9847/0890

Dipl.-lng. Heinz Lesser, patent attorney D - 8 Manchen 81, Cosimastrofce 81 Telephone: (0811) 48 38 20

Figures UA and HB are schematic views for illustrative purposes.

the resetting of one of the number wheels of the counter according to the invention, and

FIGS. 12A and 12B are schematic views to illustrate the mode of operation of the inventive device Counter in comparison to that of a counter according to the status of the technique.

In FIG. 1, 1 denotes the housing in which the counting device according to the invention is accommodated. This is open on its rear side at 2 and has openings 3, 3 ¹ in its rare walls, which are used to fix the counting device in the housing. In its front wall, the housing 1 is provided with a slot opening 4, via which the reset button of the counting device projects outwards, and this front wall also has a viewing window 5 for the number wheels. From FIG. 2 it can be seen how the reset button 6 penetrates the opening 4 in the front wall of the housing 1 to the outside and how the individual number wheels 7 become visible through the window 5. These are all shown for their zero position. On the rear side of the housing connection pieces 8 for the drive magnet and connection gap 9 for the back magnet are arranged. 10 denotes a frame which, with its rear rare wall, forms the rear wall of the housing 1, and 11 denotes screws which are used to fix a drive magnet 13 and a reset magnet 14 (FIG. 3) on the frame 10. 12 denote finally projections of the frame 10, which serve to anchor it to the housing 1 in the area of the openings J, 3 *.

In FIGS. 5A to 2F, the inventive measure is

00984 ^ / 0890

Oipl.-lng. Heinz L «i«, patent attorney D - 8 Munich 81, Cosimastrafce 81 ■ Telephone: (0811) 48 38 20

Direction shown in its entirety in different views. As already noted above, a drive magnet 13 and a return magnet Ik are fixed to the frame 10 by means of the screws 11. T-shaped leaf springs 15 and 16 are fixed with their ends on the electromagnets 1h and 15, respectively. Their transverse webs are kept in operative connection with a drive magnet arm 17 or a return magnet armature 18. The magnet armature 17 is driven by the magnetic attraction of the drive magnet 13, the point of its operative connection with the T-shaped spring 15 being an articulation point. The other free end of the magnet armature 17 engages in a recess 38 (FIG. ¹ J) of an anchoring part 19 which is rotatably mounted by means of a shaft 37 (FIG. K) penetrating the frame 10. Pawls 20 and 20 ″ formed on the anchoring part 19 can be brought into engagement with a gearwheel 21. When the magnet armature 17 is driven, the repeated pivoting of the anchoring part 19 results in a rotation of the gear wheel 21 by the pawls 20 and 20 which can be alternately brought into engagement therewith. The rotation of the gear wheel 21 is transmitted to the number wheels 7 via switching wheels 22. Each of these number wheels. 7 and this indexing wheel 22 is arranged in such a way that a rotation of one of the wheels 7 is successively transferred to the adjacent wheels through the intermediary of the respectively assigned indexing wheel. 23 has a rotatable frame which supports the ratchet wheels 22 by means of a shaft 102 (FIG. 5). This frame 23 is rotatably supported on the frame 10 by a shaft 105 (figure ¹ O. 2k denotes a first lever which is likewise rotatably supported by a shaft 9 ¹ * to the frame 10 and which the drive of a heart-shaped cam 28 (figures HA and HB) is used, 26 denotes a return spring and 27 a ratchet stopper ₉ which prevents the rotatable frame 23 from rotating and which also serves to correct the arrangement of the ratchet wheels 22.

009847/08 90

Dipl.-Ing. Hwiu Letter, patent attorney D - 8 Munich 81, Coiimastrafc · 81 ■ Telephone: (0811) 48 38 20

K shows the individual components of the inventive counter in exploded view are now illustrated. It can be seen from this illustration that the frame 10 is essentially U-shaped and has side walls 29, 29 * which have the aforementioned projections 12. These side walls are also provided with bores 30 of different sizes and their end edges have recesses 31, 31 *. The rear wall connecting the two side walls has openings 32. The drive magnet 13 has an L-shaped yoke 33, a core 3 ¹ * inserted into a bobbin 35, a coil 36 which is wound around the bobbin 35, and the drive anchoring part 17 which extends against an end edge of the yoke 33 by the T-shaped leaf spring 15 is movably held. This electromagnet 13 is fastened to the rear wall of the housing 10 by means of one of the screws 11, the screw 11 is screwed into the core 3 ¹ *. The reset magnet I ¹ J has essentially the same structure as the electromagnet 13 and is also fixed to the rear wall of the housing 10 by means of the other of the two screws 11. Only the magnet armature 18 has a different shape than the magnet armature 17 of the electromagnet 13.

The anchoring part 19 is, as mentioned above, rotatably mounted on the shaft 37, which is firmly connected with its ends to the side walls 29 and 29 'of the frame 10. As already mentioned, it has a recess or groove 38 which receives the free end of the drive armature 17, and its pawls 20, 20 'can be brought into engagement, with the gear 21 for driving the number wheels 7 Return spring which is placed around the shaft 37 and which is fastened at one end to a projection 39 which is formed on the anchoring position 19. The other end of this spring 26 is attached to a projection ho of the first lever 24. The gear 21 consists of a star wheel ill, with

009847/0890

Dipl.-Ing. Heinz Etc. Patent Attorney D - 8 Munich 81, Cosimarfrafce 81 Telephone: (0811) 48 38 20

which the pawls 20, 20 * of the anchoring part 19 in engagement are bringable. Its actual drive part is designated by 42. The gear wheel 21 is rotatable on a shaft 43 stored, which is also firmly connected with its two ends to the side walls 29 and 29 * of the frame 10.

Each of a plurality of number wheels 7, which are shown in FIG the reference numerals 44 to 49 are designated, has over his Extend the numbers "0" to "9". The wheels 44 to 49 are on the one hand with follower wheels 50 to 55 and on the the other side is provided with drive wheels 56 to 61. Heart curves 62 to 67 are still assigned to them, either can be arranged on the side of the slave wheels or on the side of the drive wheels, their arrangement is shown on the side of the follower wheels 50 to 55. These number wheels are now rotatably mounted on the shaft 43, which also supports the gearwheel 21, the drive part 42 of the gearwheel 21 being the Herzkuvre 62 of the first number wheel 44 is opposite (Figure 5). Figures 6 show details of the number wheels, for example shown for the number wheel 44. The following wheel 50 has twenty teeth, on the other hand has the drive wheel 56 only two teeth. This changes from a number wheel on the right to a number wheel on the left transmission ratio of 1:10 achieved, i.e. to achieve an intermittent translation is enough, just two Provide teeth on the left side of a number wheel.

As can also be seen from FIG. 5, the indexing wheels 22 have a number corresponding to the number of number wheels provided, which are designated by the reference numerals 68 to 73.. In Figure 7 details of these ratchet wheels are for the ratchet 68 shown for example. Each of the ratchet wheels has a slave wheel, which is marked 74 ^ in FIG is, and a drive wheel 80, which are on both sides of a disk-shaped body. The drive wheel 80 has 8 teeth of essentially the same height while

0098 ^ 7/089

ORIGINAL

Dipl.-lnq. Kkinz etc. Patent attorney D - 8 Mondi «n 81. Cosimastrafe · 81 Telephone: (0811) 48 38 20

the following wheel 74 also has 8 teeth, but of which four teeth are higher than the other four teeth, whereby these teeth of different heights alternate in the order. All ratchet wheels 68 to 73 are rotatably mounted on a common * shaft 102, both ends of which are connected to 1st attached to the rotating frame 23, these ratchet wheels are used to switch the individual number wheels 7. This switch causes the follower wheels 74 to 79 and the drive wheels 80 to 85 of the Switching gears 22. Via these there is an intermeshing connection in the following order of the single gears: 21 - 68 - 44 - 69 - 45 - 70 - 46 - 71 - 47 - 72 - 48 - 73 49.

If the pawls 20, 20 'of the anchoring part 19 cause a rotation of the star wheel 41 of the gear wheel 21, the drive wheel 42 first drives the slave wheel 74 of the first ratchet 68 assigned to it, the drive wheel 80 of which in turn drives the assigned slave wheel 50 of the first number wheel 44 drives. The drive wheel 56 of this wheel 44 intermittently drives the associated slave wheel 75 of the second switching wheel 69, the drive wheel 81 of which in turn drives the associated slave wheel 63 of the second number wheel 45. This drive continues up to the last number wheel, with a first number wheel ₄ translating one tenth of its rotation to the next number wheel.

with reference to FIG. 8, the return mechanism is now intended for the individual number wheels are explained in more detail. The button 6 actuating the reset mechanism instructs its inner end has a hole 86, while he In his Central part has an elongated hole 87 through which the bearing shaft 43 for the number wheels 44 to 49 extends. The duck lever 24 is in its main extent with a multitude of arms perpendicular to Him. 88: provided, which in their number of the number of number wheels is equivalent to. These arms are parallel to each other and point

009847/0890

Dipl.-Ing. Heinz Lester, patent attorney

D - 8 Munich 81. Cosimastralje 81 ■ Telephone: (0811) 48 38 20

- 10 -

an equal mutual distance. Each of those arms 88 has a hook part 89 at its front end, which is in operative connection with the heart curve of the assigned number wheel stands. The lever 24 also has a side wall 90 at one end and a pin 91 at its free end defines which is used for the operative connection with the button 6 via a second lever 98, this side wall 90 also has the projection 40 for the determination of one end of the Return spring 26 and a bore 93. At its other end, the lever 24 is provided with an arm 95 which has a bore 96, through the bores 93 and 96 is a shaft 94 passed through, the two ends of which are fixed on the side walls of the frame 10.-Finally is still next to the Side wall 90 is formed with a groove 97 which receives the free end of the reset anchor 18.

The above-mentioned second lever 98 has a bore 99 at one end, while its other end is provided with an elongated hole 100. The pin 91 of the side wall 90 of the first lever 24 is inserted into the bore 99; it extends further into the bore 86 of the button 6, so that the button and the two levers 24 and 98 are rotatably connected to one another. A pin 101 is inserted into the elongated hole 100 at one end of the rotating frame 23. As mentioned, this rotating frame 23 supports the ratchet wheels 22 by means of the shaft 102, the shaft 102 is inserted with its two ends into bores 104 of the frame 23. The two arms of the frame 23 also each have a bore 103 between the bore 104 and the Pin 101, in which a shaft 105 is inserted, the ends of which are firmly connected to the side walls 29 and 29 * of the frame 10, so that the frame 23 can be rotated or pivoted through the frame 10 in relation to its side walls 29 and 29 ' connected is. The shaft 105 is surrounded by a spiral spring 106, one end of which 10? with one edge of the rotating bar 23 and

009847/0890

BATH original

Dipl.-Ιηα .. Heinz Lew «, Potentanwalt D - 8 Münthen 81, Cosimastrafee 81 · Telephone: (08Π) 48 38 20

the other end 108 of which is fixed to one edge of the stopper 27 are connected. The stopper 27 is coupled to the side walls 29 and 29 ′ of the frame 10, so that the rotating frame 23 is biased in the direction of arrow A shown in Figure 8A, i.e. in the direction of rotation or pivoting in which the switching wheels 22 disengage from the number wheels 7.

In Figure ^ a transparent faceplate is also designated by 109, which has a lens 110 extending in the middle in its longitudinal direction and with it on its side edges Projections 111 is provided, one of which is a recess and the other of which a Schiitz opening 113 sum through of the button 6 assigned 1st. These projections 111 come to be inserted into the recesses 31 and 31 'in the end edge of the side walls of the frame 10, while the lens 110 is behind when the counting device is installed in the housing 1 the window 5 (Figure 2).

It can be seen from FIG. 9 that the two connecting pieces or terminals 8 are attached to a common base body 114 made of insulating material and having stepped edges 115 at both ends and one at the center having vertical Bohrllö. The two clamps 8 lie on both sides of this bore 116 within the edges 115. The U-shaped frame 10, on the other hand, has two recesses 117 and 118 which are separated from one another by a protruding tongue 119 are separated, which in the bore II6 of the base body 11Ί of the two terminals 8 is inserted. To this Thus, these connecting pieces can be quickly fixed to the frame 10. The inner wall of the housing 1 abuts against the outer surface of the base body UM fixed in this way on the frame 10.

The electromagnetic counter according to the invention now works as follows: As long as there is no connection to terminals 8 and 9

009847/0890 ^ AD ORDINAL

Dipl.-Ing. Hw'tu lesser, patent attorney 0-8 Munich 81, GHimastra6 «81 ■ Telephone: (0611) 48 38 20

Pulse current is applied, the lever 2k for driving the heart curves of the number wheels 7 arranged in series is not in operative connection with these heart curves, since it is biased by the return spring 26. The ratchet wheels 22 are therefore in mesh with the number wheels 7 with their following and drive wheels. If a pulse current is now applied to the connection terminals 8, the drive magnet 13 is excited so that the drive armature 17 continues to be sucked in and the armature part 19 is thereby rotated around its shaft 37 in the direction of arrow D according to FIG. This has the consequence that one of the two pawls 20> 20 * of the armature part 19 comes into engagement with the star wheel kl of the gear 21, so that this is rotated in the same direction of rotation, the rotation of the star wheel 41 is on the number wheel kk Transferred via the associated scarf wheel 68, the number of impulses given is thus represented by the numbers on the number wheels.

On the other hand, to reset the number wheels back to their zero position, a pulse current can be applied to the connection terminals 9 to actuate the reset magnet Ik ; the button 6 can also be pressed manually in the direction of the arrow E according to FIG. The reset takes place in detail as follows: If the button 6 has been pressed in the direction of the arrow, E, then the arms 88 of the lever 2k are initially due to the mutual connection of the first lever 2k and the second lever 98 via the pin 91 the shaft 9k is rotated in the direction of the arrow B, so that, for example, » the first of the arms 88 comes into contact with the first heart curve 62. At the same time, the second lever 98 is pulled in the direction of the arrow C so that the pin 101 of the rotating frame 23, which engages in the bore 100 of the lever 98, is also pulled in the direction of the arrow C. The lever 98 will then rotate the frame 23 in the direction of the arrow A around the shaft 105 with the support of the force of the spring 106 applied to the frame 23, so that all the ratchet wheels 22 of the

0 98 4 7/0890

BAD ORJOfNAL

Dipl.-Ing. Heinz Lesser, patent attorney D -8 MOndien 81, CosimastraB 81 Telephone (0811) 483820

- 13 -

Follower and drive wheels of the gear wheels 7 are separated. Simultaneously with this separation of the ratchet wheels 22 from the number wheels 7, the heart curve 62 is pressed by the hook part 89 of the arms 88 of the lever 2k so that it is rotated in the direction of arrow B into a position in which the center i2 * of the curve 62 comes into engagement with the hook 89, so that the number wheels with their following and drive wheels are rotated simultaneously until the number wheels reach their zero position, which are then visible through the viewing window 5 of the housing 1. Since this reset is carried out identically for all number wheels, they are reset to "0" at the same time.

ti. ■ · ■■■■

If the force exerted on the button 6 is now canceled, the lever 21 is returned to its starting position by the force of the spring 26 brought back, the button 6 is then brought back into its original position.

The embodiment of the described in detail above inventive counter is particularly advantageous in that that the ratchet wheels are not very easily disengaged from the gears of the number wheels during normal counting operation come. This will be explained in more detail below with reference to FIGS. 12A and 12B.

In FIG. 12A, the counter according to the invention is initially schematic This works as follows: (1) Assume that N represents the bearing force which the shaft of the ratchet gears from the associated gears catches during the counting operation, this force acts as a a recoil force.

(2> This force N can now be related to the force F ₂ , its line of action through the elongated hole 100 of the second lever 98 and through the axis of the pin 91

009847/0890

Dipl.-Ing. Hein * Usser, patent attorney D - 8 Munich 81, Cosimastra & e 81 Telephone: (0811) 48 38 20

- Ik -

goes. This force P ₂ satisfies the following equation:

. N

63) The force P ₂ gives the arm 88 of the lever 2k a torque M ₂ , which satisfies the following equation:

Between the biasing force P of the spring 26 and the force the following equation can be established:

1 P,

From the above equations it can thus be deduced that as M θγ m ₂ becomes smaller, the torque M ₂ also becomes smaller. The first lever 2k will therefore be harder to turn, so that the force P can be made smaller. If, in other words, a considerably large recoil force N is exerted on the ratchet wheel, then the first lever 2k is not moved so that the ratchet wheels and the gears assigned to them are constantly held in their normal position. If O ₁ In ₂ = 0, then an arrangement is created in which the switching wheels never disengage from the associated gear wheels, so that the return spring 26 can then be selected to be extremely small. ■

In contrast, the known arrangements according to the schematic representation according to FIG. 12B have a lever 88 'which is mounted on a rotating frame 23' _{at ü o art *.} P causes

OO98A? / 0890

Dipi.-lng. Heinz Lesser. Patent attorney 0-8 Munich 81, Cosimastra & e 81 Telephone: (0811) 483820

In this illustration, the pretensioning force of a return spring 26 * is clearly shown. In this case, a rear part abuts at point m ^ against an extension of the rotating frame 23 *. this creates the following conditions:

(1) Let N be the recoil force which the switching gears receive from the gears assigned to them. (2) Let F ₁ continue to be the force additionally given to the rebel 88 as a result of the recoil force N. The following equation can then be set up between F _{1 and N:}

. N

_{(3) The torque M 1} given to the lever 88 * as a result of the recoil force N then satisfies the following equation:

= F ₄

= N

Since the torque M _{1 is} now transferred directly to the lever 88 'as a result of the recoil force N, it is necessary to provide such a sufficient restoring pretensioning force that the torque is overcome, even if it is taken into account that the recoil force N is very high is small. If this force P does not have the " equation ~~ ~

fulfilled, then the ratchet wheels would move away from the number wheels Even if the recoil force N is negligible is small, it must be ensured that the

00980/0890

BATH

Η «ια L« sier _r patent attorney D - 8 Mönchen 81, CosimästiägiB BT ■ Phone: ((3BIl) 48 38 20

1959B2?

Force P is present.

In contrast to this, the invention allows the BrehmoBBBnt M ₂ -. can be chosen to be very small * by choosing the distance O £ M _{2 to be} very small, which then also has the consequence that the pretensioning force P is equally small.

0 0 9847/0890

Claims (1)

Dipl.-Ing. Heini UsMr. Patent attorney D - 8 Manchen 81, Cosimaitrofc · 81 - Telephone: {08Π) 4838 20 - 17 PATENT CLAIMS ■ {ly Electromagnetic counter with at least one electromagnet for rotating the free end of at least one magnet armature and with an armature part held in operative connection therewith for rotating several number wheels, characterized by a first, rotatably mounted lever (24; 88, 89), which is connected to Herakurven driven him (28 \ 62 to 67) is kept in operative connection, one of which is arranged on the side of the number wheels (7; 44 to 49) sur reset of these in their zero position, one at the end of the bearing shaft (94) of the first lever (24) opposite this rotatably mounted second lever (98) and a frame (23) freely rotatably mounted at the free end of this second lever (98), which supports switching wheels (22; 68 to 73) for the individual number wheels, in one such an arrangement that the axes of rotation of the first lever (24), the second lever (98) and the frame (23) lie essentially in a common plane. ' 2. Counter according to claim 1, characterized in that the armature part (19) with a its bearing shaft (37) is provided with a spiral spring (26) that is wound between it and the first lever (24) is, which when the magnet armature (17) is not attracted, the armature part in its starting position and the first lever In pushes in a direction opposite to this in a position, in which this lever is not in drive connection with the Heart curves (28) is. 3. Counter according to claim 1 or 2, characterized in that the first lever (24) with one of the number of Hers curves (28) corresponding Number of drive arms (88, 89) is provided in order to 0 0 984 9/0 »» Ο Oipl.-Ing. Heinz Lew «, patent attorney D - 8 Munich 81, CosimastraB 81 ■ Telephone: (0811) 48 38 20 given restoring force for restoring the number wheels (7) translate directly into your zero position. 4, counter according to one of claims 1 to 3, d a d u rc h g e k e η η ζ ei c h η e t that the electromagnet (13 • '· .. is firmly connected at the bottom to the bottom part of a U-shaped frame (10), between the two side walls (29,29) bridged by a transparent plate (109) the anchoring part (19), the number wheels (7 ), the first lever (2 ¹ OzUHd the movable frame (23) are arranged, and that this U-shaped frame (10) is inserted into a housing (1) which is open at the end and which has a viewing window (5 ) for the number wheels (7). 5. Counter according to claim 4y, thereby g e k e η η - ζ e i ch net that, the U-shaped frame (10) to penetrate Edge of its bottom part is provided with at least two, a central projection creating recesses, the Projection (119) into a bore (116) of a base body (114) of connecting terminals (8) for the electromagnet (13) is inserted to the basic body with one end of the Terminals outside the frame and with the other end inside the frame and in connection with the Keep the electromagnet off. 009847/0890 BATH. ORIGINAL Lee r * i te