DE2304721A1 - DEVICE FOR ESTABLISHING A BULB CONNECTION OF AN ELECTRICAL CONTACT WITH A CONDUCTOR OF A FLAT CABLE - Google Patents

Description

PATENT LAWYERS

HELMUT SCHROETER KLAUS LEHMANN

DIPL.-PHYS. DIPL.-ING. 2304721 8 MUNICH 25 LtPOWSKYSTH. IO -

AMP Incorporated

amp -18 / ed

80.1.Ti

Device for dividing a bead connection an electrical contact with a conductor of a flat cable.

The invention relates to a device for manufacturing a bead connection of an electrical contact with a conductor of a flat cable using a Stamp and an abutment and a flechanism to open the stamp and the abutment between and to move the bead closed position relative to each other.

Expensive automatic devices are known to connect electrical contacts to the individual conductors of flat cables! the flat cable is usually fed across the orientation of the conductor. The round sleeves of the contacts are attached to the ladder by crimps or crimps, so that parallel and straight edges of the side walls of the opened sleeves through the cable from one side

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be pushed, ie each on one side of a corresponding conductor. The split sleeve is then bent over and pressed against the other string of the cable. The known devices work essentially satisfactorily when large lengths of flat cables and contacts are used. However, they do not do justice to the problems of the worker in the workshop or the technician in the laboratory, who not only have a limited need for connections to flat cables, but also have special requests to a greater extent, for example a special arrangement of contact elements on the cable to be able to make. A problem with terminating cables arises from the size of the contacts, as they are usually small and made of lightweight and flexible material. The edges of the partial sleeve, which are to be pushed through the insulation on each side of the conductor of a cable, are often destroyed during the bead connection, ie they can be bent, for example, by the force that pushes them through the cable. In most cases this leads to an insufficient overlap of the contact edges on the opposite sides of the cable, so that an inadequate connection between the edges and the conductor arises.

The object of the invention is to create a device of the type mentioned at the outset, which the above ·? going does justice to the problems mentioned.

The solution to the problem is characterized by the features of the characterizing part of claim 1.

An advantage of the device according to the invention is that that the sides of the connector sleeve of the electrical contact to be worn by the strings of the slot, though

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pass the contact holder. The possibility that the side walls of the connection sleeve on contact with the electrical Bulging or bending of the contact is reduced to a minimum or eliminated.

In a preferred embodiment, the device is as formed portable hand tools, which is particularly suitable for laboratory and workshop work, since it is through a Hand of the operator can be actuated. Characterizes an advantageous embodiment of the device for bead connections through the features of claim 2.

Embodiments of the invention are based on the following of the accompanying drawings.

FIG. 1 is a perspective view of a device designed as a hand tool according to the invention!

FIG. 2 is a front view of the hand tool j shown in FIG

Figure 3 is a sectional view taken along line III-III in Figure 2;

Figure 4 is a partial sectional view taken in the direction of the line IV-IV in Figure 2,

FIG. 5 is a view comparable to FIG. 3, showing a stamp and a pusher mechanism after completion of a bead connection j

FIG. 6 is an enlarged partial sectional view through a contact holder as part of that shown in FIG Hand tool ι

Figure 7 is an enlarged partial sectional view of an im

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Contact holder located contact;

Figure B is a partial sectional view showing details of a cable feed mechanism

Figure 9 is a view similar to Figure 8 below Presentation of the cable conveying mechanism, which the cable is in action

FIG. 10 is a perspective view of a support for the hand tool shown in FIG. 1;

FIG. 11 is a partially broken view showing the seated on the support according to FIG. 10 Hand tool j

FIG. 12 is a perspective view showing the operation under which that shown in FIG. 1 is shown Hand tool accommodates a multi-strand flat cable, the size of which is wider than that normally Cable width picked up by the hand tool j

Figure 13 is a perspective view of another embodiment the device according to the invention;

FIG. 14 is an enlarged partial sectional view from line XIV - XIV in FIG. 13,

Figure 15 is a sectional view taken along line XV-XV in Figure 14;

FIG. 16 is a sectional view comparable to FIG. 5, showing a stamp at completion a beading or folding stroke i

FIG. 17 is an end view of that shown in FIG Device showing a conveyor mechanism

mus for multi-strand cod and

FIG. 18 is a partial sectional view from below that in FIG Figure 13 shown device showing the mechanism for controlling the rotary movement a table.

An embodiment of a device for connecting an electrical Contact 19 with a conductor 23 of a flat cable 22 is shown in Figures 1-12. In this embodiment the invention, the device has the form of a portable hand tool 1, which has a housing 12, an upper horizontal handle 11, an arcuate part 13 and a lower base part 14. The horizontal one The handle extends rearwardly from an upper end of the housing 12, while the part 13 is of a bogan shape extends from a rear end of the handle 11 downward. The lower base part 14 is at a rear End connected to the part 13 and is forked at its front end, whereby a leg 7 is connected to the housing 12 is, while the other leg 8 is arranged near the lower end of the housing 12, but at a distance from this is provided. The transition 7o between the legs 7 and 8 essentially has an arc shape.

A plunger 45 is displaceable within the housing 12, which at its upper end has a pin 48 as shown in FIGS. 3 and 5. The spigot extends into a space 49 between a pair of projections 6 on the end 5 of a pusher 15. On the opposite side At the lower end, the plunger 45 is connected to a punch 46 of substantially rectangular cross-section. The punch 46 extends through a / right-angled Slot 47 in a contact holder 48 downwards. The contact holder 46 is slidably guided in the housing 12 between the plunger 45 and an abutment 2o. The abutment 2o is rigidly attached to the top of the leg 8 and

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below the contact holder 18, aligned with this, attached. Tensioning means in the form of a spring 57 are located within a chamber 53 on the top of the contact holder 18 provided. The spring 57 surrounds the punch 46 and rests against both the underside of the plunger 45 and the underside of the chamber 53. The action of the spring

57 consists in moving the contact holder 18 down onto the • To press abutment 2o and around the. Plunger 45 within the housing 12 to be clamped upwards in order to clamp the plunger 46 to hold in the open position with respect to the abutment 2o.

The top of the abutment 2o is designed with two parallel grooves (FIG. 7). The pusher 15 is pivotable, mounted in the region of the end 5 on a pin 5o which extends from the housing 12. The opposite The end 4 of the pusher 5 has an interior b; w. a chamber

58, within which a pawl 56 and a spring 57 ' are provided. The spring 57 'presses the pawl 56 in the direction of an aligned position with respect to the longitudinal axis of the pusher 15. One end 73 of the pawl 56 cooperates with teeth 16 on an arcuate rack 17, which is inserted in a recess 74 of the part 13. The pivoting of the pusher 15 is made by the system coming opposite sides of the recess 74 limited. The setting of the pivoting movement of the pusher counterclockwise (seen in Figures 3 and 5) is achieved by a screw 55 which extends through the handle 11 extends and can rest on one side of the trigger 15. The upward movement of the Plunger 45 in the housing 12 under the action of the spring 57 is shown in FIG. 3 by the engagement of the pin 48 on limited upper projection 6, since the pusher 15 rotates around the pin 5o clockwise (Figures 3 and 5) lets until one side of the pusher 15 rests against the lower side of the recess 74.

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The punch 46 can move relatively in the direction of the abutment between the open and closed bead position when the pusher 15 is pivoted counterclockwise according to FIGS. 3 and 5. The pivoting of the presser 15 is formed by the projections 6 and the pin 4B _- transmitted as linear motion to the plunger 45, in order to lower the plunger 45 and the plunger 46 downward against the action of the spring 57th During the counterclockwise movement of the pusher 15, the pawl 56 engages in the teeth 16 of the rack 17. When there is no longer any force acting on the pusher 15, then this is locked in position in relation to clockwise movement
ricntetf, since the latch is tensioned by the spring 57.

The pusher remains in this opposite clockwise movement tense position until the counterclockwise movement is complete.

At this point the pawl 56 passes over the teeth 16 of the Rack 17 also. The pusher 15 is now free

to turn clockwise under the action of the spring 57, there the pawl 56 slides freely over the teeth 16. When the pusher 15 is turned into the position shown in FIG. 5 by the spring 57 Position is returned, he is in a sliding manner opposite Anti-clockwise movement locked. This arrangement ensures that no contact 19 is insufficient is attached to a conductor 23 of the cable, namely when the operator unintentionally the trigger 15 releases before its counterclockwise movement is complete.

On one side of the housing 12, a lever 35 is mounted with the aid of a pin 44) the pin 44 engages in a elongated slot 43 in the lever 35. At its lower end according to Figures 2 and 4, the lever 35 is pivotable with Articulated to one end of a link 36 with the aid of a pin 37. At the opposite end, the link 36 is rigidly attached

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a cylindrical body 38 attached, which is in the housing 12 extends. The end portion of the cylindrical body 38 within the housing 12 is at an angle cut off by 18o ° and forms a control body 4o of semi-circular shape. According to FIGS. 4 and 5, there is a surface of the control body 4o on a surface of a recess 42 within the contact holder 18. When turning the control body 4o the contact holder 18 can be raised against the tensioning action of the spring 57 upwards. The pivoting of the cylindrical body 38 is triggered by movement of the lever 35, as shown by the arrow in FIG.

A mounting plate 28 is attached to the leg 8 and carries a lower adjusting plate 25 displaceably on (not shown) bearing surfaces. The plate 25 has teeth 63 at the bottom. On the underside of the plate 28 is a movable plunger 64, which by a Spring 65 according to Figures 8 and 9 is tensioned downwards. A pawl 66 is pivotable at the top of the plunger and has a finger 67 which engages the teeth 63. In the normal lower position of the Plungers64 (Figure 8), the pawl 66 does not engage the teeth 63. However, if the plunger is manually operated as shown by the arrow is raised in Figure 9, the pawl 66 engages the teeth 63 of the plate 25 and causes the plate 25 is displaced to the right by a predetermined distance corresponding to the distance between the teeth 63. The distance is dimensioned so that it corresponds to the distance between the conductors 23 of the cable 22.

A clamping plate 26 and screws 33, 34 hold the cable 22 in position on the adjustment plate 25 and form together a cable holder.

A tension plate 27 is by means of a bolt 29 on the Mounting plate 28 attached. By loosening or tightening

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of the bolt 29, the frictional resistance to the movement of the adjusting plate 25 can be adjusted.

An adjustable stop 6Θ is at the bottom of the Adjustment plate 25 attached to allow initial adjustment of the adjustment plate 25. That way you can the finger 67 exactly in the first tooth of the setting plate 25 engaged teeth.

The leg 7 is cut off or hollowed out in the manner shown in FIG. 1 and forms a stop provided shoulder 3οϊ a stop 31 is on the leg 8 provided near the abutment 2o.

As can be seen in particular from FIGS. 6 and 7, there is an opening 9 in one side of the contact holder 18 and is in communication with the slot 47. . . The opening is essentially circular and has a diameter which is larger than the width of the slot 47 corresponds.

Bie opening 9 is designed so that it has a sleeve part of contact 19 picks up. This consists of a base, which holds a pair of side walls at a distance from each other, with this together thus forms a U-shape.

In operation, the clamping plate 26 is by loosening the screws 33, 34 lifted from the setting plate 25 upwards. The cable 22 is inserted between the clamping plate 26 and the adjustment plate 25 inserted until the leading edge of the cable rests against the stops 3o and 31. During the insertion of the cable between plates 25 and 26, it is necessary to press the lever 35 downwards, whereby the contact holder 18 is raised. This allows the cable to move between the contact holder and the abutment 2o. The alignment of the first or selected conductor 23 of the cable

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between the abutment 2a and the slot 47 in the contact holder 18 is done visually. The clamping plate 26 is then tightened using the screws 33, 34, around the cable 22 in position on the adjustment plate. 25 to hold. -A contact plug 19 is then inserted into the opening 9 of the cantact holder 18 introduced. The pusher 15 is raised, i.e. in a counterclockwise direction Rotation according to Figures 3 and 5 moved by placing the handle 11 in the ball of the hand and the fingers closes around the handle. The shape of the hand tool 1 is to be regarded as important during this process step, because of the closed arc shape of the upper handle, the front housing 12, the lower part 14 and the arcuate Part 13 the necessary considerable force can be applied to the contact 19 in the cable 22 to let enter. When the trigger 15 is pivoted counterclockwise, the plunger moves against the action of the spring 57 downwards, as a result of which the plunger 46 is displaced through the slot 46 of the contact holder 18. The round contact or the connecting sleeve of the contact 19 is then gripped by the free end of the punch 46, after which the contact is pushed through the slot 47, the sides of which support the side walls of the round sleeve. The side walls then penetrate the insulation of the cable on each side of a conductor 23 and are through the grooves on the abutment 2o turned back so that they touch a surface on the lyre 23.

The cable 22 can now be pushed forwards around a further conductor 23 between the contact holder 18 and introduce the abutment 2o. This is done by simultaneously depressing the lever 35 for the purpose of Raising the contact holder 18 and by moving the plunger 64, which up against the clamping force of the Spring 65 is moved to allow the finger 67 of the pawl 66 to engage the teeth 63 of the adjustment plate 25.

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The width of the cable (Figure 12) should be such that it does not get into the space between the screws 33 and 34 can be inserted when jammed between plate 26 and plate 25, then you can the cable within the Arcuate transition 7o between the legs 7 and 8 of the part 14 roll. In this case the front stop is 31 can still be used. If desired, a short clamping plate (not shown) with just one Clamping screw, such as the clamping screw 33, can be used to clamp the leading edge of the cable 22.

Figures 1o and 11 represent a holder 71 for the load-bearing hand tool 1. The holder 71 has exne substantially flat surface 72 for supporting the base part 14 and the mounting plate 26 and a curve or arcuate surface 73 'for supporting the arcuate part 13 on. The dimensions of the flat surface 72 are limited in such a way that the plunger 64 moves when the tool is in place extends over the bracket. As a result, the plunger can easily be operated manually when using the hand tool 1.

A second embodiment of a device for connection an electrical contact 119 is shown in FIGS. 13-18! contact 119 corresponds to contact 19, however, forms part of a strip 181 of electrical contacts. In this embodiment runs the device is semi-automatic and has a piston and cylinder device 115 which can be actuated by pressure medium. from the device 115 held above a housing 112, a piston rod 117 extends downward and is on a plunger 145 arranged in the housing 112 is attached. The housing 112 is supported by a support 100. Of the Plunger 145 extends into a sleeve 184 which rotates with the plunger using a pin 158

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and is axially movable; the pin 148 extends transversely through diametrically opposed Bores of the sleeve 184. A tubular body 124 surrounds the sleeve 184 and is mounted within the housing 112. Each end of the post 148 extends into one axial slot 183 at the top of body 124, allowing relative axial movement between body 124 and the plunger 145 is allowed, but relative rotational movement is prevented. The sleeve 184 is a sliding fit fit inside the body 124

One end of a contact holder 118 is disposed within the lower portion of the sleeve 184. The contact holder has a Chamber 185 with a clamping body in the form of a spring 139. The spring 139 is between the base of the chamber 185 and the underside of the plunger 145 clamped and surrounds an axial projection 144 of the plunger. The contact holder 118 is prevented from being disengaged from sleeve 184 by spring 139 by an annular flange 119 'at the top to be repelled; the flange rests on an inner shoulder 186 of the sleeve 184. The spring 139 tensions the Plunger upward (FIG. 14) in a direction facing away from an abutment 12o. The abutment 12o is on a table 182 and is aligned with the contact holder 118. As a result, the contact holder 118 becomes toward of the abutment 12o braced. A punch 146 extends from projection 144 and attached thereto substantially rectangular shape downwards. The punch is within the rectangular slot 147 of the contact holder 118 movable. With the exception of the device for moving the punch 146 relative to the abutment 12o between open and closed bead position works the remaining part of the semi-automatic device described Shape essentially like the stable hand

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tool 1. The punch 146 moves down along the slot 147 and separates a contact 119 from the strip 181, which is located in an opening 3oo of the contact holder 118 is and is aligned with the slot 147. The contact 119 is then through the slot 147 driven down) the side winds of the contact sleeve penetrate the cable on both sides of a conductor and are then bent back so that they have a surface dBS conductor as a result of the abutment 12o touch.

The device 115, the plunger 145, the punch 146, the sleeve 184, the tubular body 124 and the contact holder 118 can be viewed as a unit, which is rotatable in the housing 112 about a vertical axis (FIGS. 13 and 14). The body 124 has several angularly spaced located radial bores 96, which are arranged in the same plane. A pin is placed in one of the holes 97 added, which forms part of an angle adjustment device 98. The device 98 has an on the housing 112 attached housing 99 in which a spring 98 is located. The spring is between a closed End of the housing 99 and a flange 191 on the pin 97 pressed together, causing the pin in the direction of the respective Bore 96 is clamped. The pin 97 can be pulled out of the bore 96 against the tension of the spring 95 when one grips a button 193 located on the pin 97 outside the housing 112 and on this pulls. In this way, the tubular body 124 can be adjusted in an angular position with respect to a vertical axis will. Oe according to the number of radial bores 96 in the body 124 any number of angular positions is specified.

With particular reference to FIGS. 15 and 16, it can be seen that the contact strip 181 passes through the opening

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3oo of the contact holder 118 is introduced, which with the slot 147 communicates. In this way, subsequent contacts 119 come into an aligned position with respect to slot 147. The conveyor mechanism 18o of the contact carrier strip operates with a pair of Blocks 195i 195 *, of which block 195 at the bottom End of the tubular body 124 is attached, while the block 195 'near the lower end of the contact holder 118 is attached. The two blocks are essentially arcuate on the circumference. Guide plates 196, 196 'of a corresponding shape are secured by means of screws 197 attached at a distance to the two plates and form a guide channel.

The block 195 is penetrated by a vertical bore 198 in which a guide pin 199 is slidably received is. The lower end of this pin is attached to the lower block 195 *. There is a handle 3o4 on block 195 hinged, soft through one in a chamber 2o2 of the block 195 located spring 2o1 is tensioned counterclockwise (Figures and 16). Another pawl 2o3 can be pivoted attached to the block 195 and is tensioned counterclockwise by a spring 204 according to FIGS. The spring 2o4 is located in a chamber 2o5 in the block 195j when the piston 117 is in the retracted position Position is, then the contact holder 118 is spaced from a cable 122 on the table 182 (Figure 15).

In addition, blocks 195 and 195? relatively close to each other, so that the spring 2o4 presses the pawl 2o3 in abutment against the strip 181, by a further To prevent transport of the strip 181, while the pawl 3o4 due to the angular position of its nose in a Position is in which it slides over the strip 181 during transport of the same. When operating the device 115, the piston 117 is extended downward, "so that a downward movement on the contact holder

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is exercised. This leads to a further separation of the Blocks 195 and 195 'so that the pawl 3o4 engages the strip 181 under the tensioning action of the spring 2o1. These is withdrawn from a supply roll (not shown) by moving the blocks 195 '. After the contact 119 was stitched onto the cable 122, the plunger 145 is in its starting position under the action of the spring 139 returned. During this return, the block 195 'moves in the direction of the block 195, so that the The pawl 3o4 acts to displace the strip 181 in the direction of the contact holder 118. As a result of this will a new contact 119 in position in the opening ^ oo below of the punch 146 is inserted, while the pawl 2o3 due to the angular position of its nose over the carrier strip can slide.

In Figure 14, a leaf spring3o6 is shown, which on Contact holder 118 is attached. This is arranged so that it is when the contact holder is moved upwards 118 and actuation of the plunger 146 is compressed and comes under the cable 122. When the stamp 145 is withdrawn into the slot 147 of the contact holder 118 after the beading or folding has been completed, pushes the spring 3o6 the cable and the crimped or crimped contact from the opening in the base of the contact holder 118 located slot 147 through which the contact 119 was printed by the stamp 146.

In Figures 15 and 16, a guide body 211 is shown in dashed lines, which prevents contact 119 moves laterally after beading.

FIG. 17 shows a cable adjustment device which, with reference to the portable hand tool 1

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described device is comparable, but has means to automatically adjust the cable 122 after each individual contact 119 has been crimped onto its corresponding conductor. The mechanism 122 has an arm 222 which is pivotable about a point 223 located substantially in the middle, furthermore a second arm 224 which is provided substantially parallel with arm 222 and about a center point 225 pivotable, and articulated arms 226, 227 attached to the opposite ends of arms 222 and 224 are and are connected to one another via a threaded body 22Θ. The arm 222 is normally through a Spring body 229 clamped in a counterclockwise direction. When facing downwards Movement of the contact holder 118 and when the plunger 146 is in the closed bead or folded position moves the spring 229 moves arm 222 in a counterclockwise direction so that arm 224 moves in the same direction emotional.

After the folding or production of the bead is complete, the arm 222 is counter-clockwise against the action of the spring 229 twisted, since the upwardly moving lower block 195 'comes into contact with an arm 23o at the end of the arm 222. Downward movement of links 22 and 227 follows so that arm 224 is also clockwise The free end of the arm 224 comes into contact with a plunger 164 and presses it against the clamping force spring 165 upwardly to engage a pawl (not shown) in teeth 163 on the lower adjustment plate 125 to intervene. The adjusting plate 125 is thus moved in a direction in which a subsequent Head of the cable comes into position on the abutment 12o to be crimped.

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After folding, the remaining part of the strip arrives 181 through a gap 1o2 of the holder or support 1oo and is fed to the waste.

As can be seen from FIGS. 17 and 18, the table 182 is rotatably mounted on a horizontal platform arm 24o with indirect support on legs 4oo. The cable 122 is held on the table 182 by means of the clamping plate 126 and the adjustment plate 125. The setting of the table 122, which takes place in the direction of rotation, is achieved by means of a selector device 241 which is attached to the plate form 24o. The selector device 241 has a housing 242 and a pin 243 with a flange 244. The flange or bur 'located at one end of the pin is displaceably guided within the housing 242 and is tracked by a spring 245 according to FIG printed above. A button 46 is attached to the pin outside of the housing so that it can be pulled out of its locking position.

The platform 24o is formed with a series of openings 247, which are arranged in a circular path in the area of the circumference and in a corresponding relationship in radial bores 186 of the tubular body 124 are assigned. By actuating the button 246, the pin 243 from a of the openings 247 can be pulled out to the table 182 on the platform 24o to one of the remaining openings 247 to align. Then the button 246 is released, so that the pin 243 again in the corresponding selected opening 247 can engage the table 182 in to lock in its desired position.

The mode of operation of the semi-automatic device corresponds to the mode of operation of the hand tool 1 with the exception of that instead of the manually operated pusher., 1 :. sin elaktri-

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shear switch (not shown) is printed to to operate a pressure cylinder. This moves the piston rod 117 downwards and consequently moves the Plunger 145 in housing 112 downwards.

The device is to be regarded as extremely versatile, since the Contact holder 118, punch 146 and table 182 in selected angular positions are adjustable. A cable should be wide enough to fit the full Attachment of the contacts 119 in the transverse direction as a result of the Limitation of the penetration depth of the bracket used 1oo is excluded, you can the Kantakthalter 118 and the punch 146 as well as the table 182 around a Rotate so that the other side of the cable is below the contact holder 118. Contacts 119 can be attached to this side of the cable and extend in the same direction as contacts 119, which are attached to the other end of the tape or cable.

As in the case of the hand tool 1, the side walls of the contact sleeve when the downward movement of the Stamp 146 supported by the sides of the slot 147 below the opening 3oo.

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Claims (5)

Expectations Device for producing a bead connection ¥ ines electrical contact with a conductor of a flat cable under. Using a stamp and a. Abutment and a mechanism, which the stamp and the abutment moved mutually between the open and closed bead position, marked thereby et that a movable contact holder (1B, 118) between the punch (46, 146) and the abutment (2o, 12o) is arranged so that the punch extends through a slot (47, 147) of the contact holder, while an opening (9, 3oo) located in the contact holder provides an electrical contact (19, 119) receives and with the slot (47, 147) in communication, so that in the opening (9, 3oo) located electrical Contact slides along the slot as the punch moves through the slot in the direction of the abutment and a bead connection with a conductor (23) of a cable (22, 122) held on the abutment enters, and that a spring (57, 139) holds the contact in the direction of the abutment and the plunger in the open direction Tense position. 2. Device according to claim 1, in the form of a viable hand tool, characterized by that the mechanism moving the punch has a plunger (47) which at one end is connected to the punch (46) is connected, while the opposite end of the plunger is connected to an elongated pusher (15), that the plunger can be displaced within a housing (12), while the pusher can be pivoted at one end (5) is hinged to the housing (12), and that a handle (11) is attached to the housing (12) and arranged so that the Operator using the hand tool on the handle (11) 309833/0847 - 2ο - with one hand and grasps the trigger (15) with the fingers of the same hand. 3. Device according to claim 2, characterized in that that stops limit the pivoting movement of the handle C15) that a device (57 ', 56, 16) prevents the pusher from pivoting in one direction after moving it in the opposite direction was, and that the device consists of an arcuate rack attached to the housing at a distance therefrom (17) and a pawl (56) which is pivotable at the opposite end (4) of the pusher (15) and which cooperates with teeth (16) of the arcuate rack (17). 4. Device according to one of claims 1 -3, characterized in that the contact holder (18) on Abutment (2o) is applied so that a rotatable control body (4o) moves the contact holder (18) against the spring (57), and that a lever (35) initiates the rotary movement of the control body (4o). 5. Apparatus according to claim 1, characterized ei c h η ε t that the mechanism moving the punch has a plunger (145) which at one end with the Ram (146) connected and rotatably mounted within a housing (112) that a device (98) the plunger (-45) in its angular position in the housing (112) sets that the plunger, the punch and the contact holder with one another are connected so that the angular movement of the plunger is a corresponding angular movement of the ram and the Contact holder triggers that the abutment (12o) is arranged on a rotatable table (182), and that one device (241) adjusts the table in its angular position. 309833/0847