DE1931840A1 - Device for the controlled movement of a workpiece in a certain direction - Google Patents

Description

Andrejewski & Honke patent attorneys Physicist Dr. Walter Andrejewski

Attorney's file: 32 950 / Ti

Essen, June 23, 1969 Keftwiger Strasse 36 (^)

Patent application of the gentleman
HARRY JOSE COSH
34 Vasey Street,

East Bentleigh
State of Victoria
- Australia -

Device for the controlled movement of a Workpiece in a certain direction.

The invention relates to a device / by means of which a controlled movement, in particular a step-by-step movement, can be imparted to a workpiece in a certain direction,

The invention aims to develop such a device in such a way that that a relatively simple and inexpensive unit results, by means of which a workpiece from a certain distance is movable in any desired direction, the extent of the movement should be determinable in such a way that an exact Control of the position of the workpiece can be achieved.

009812/1165

Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Keliwiger Strasse 36

The device according to the invention is essential for this purpose characterized in that it has a support element for the workpiece, a transfer plate connected to the support element, Arrangements for moving the transfer plate parallel to the support member, arrangements for moving the workpiece in essentially at right angles to the plane of the supporting element when shifting the transfer plate, and arrangements connected to the transfer plate in order to keep them in contact with the workpiece to move against their direction of movement and thereby give the workpiece a corresponding movement.

The transfer plate can consist of a substantially parallel to be mounted on several bearing balls at a certain distance from the supporting element and held in place by a spring Plate or be designed as a hood-like spring plate, the side parts of which bear against the support member. To move the Transfer plate are preferably provided at suitable points next to the transfer plate arranged electromagnets, which can optionally be switched on in such a way that the transfer plate is attracted in the direction desired in each case. On the other hand, mechanically or hydraulically operated arrangements are also conceivable.

For the displacement of the workpiece towards the support member, electromagnets are preferably provided, which on the support member are attached and have pole pieces arranged at the same distance from and close to the transformer plate, so that at optional excitation of these electromagnets, the transfer plate can be moved and with simultaneous excitation of all electromagnets the workpiece can be pulled against the pole pieces.

009812/1165

Patent attorneys Dr. W. Andreiewski, Dr. M. Honice, 43 Essen, Kettwiger Strasse 36

A special field of application of the invention is its use in the manufacture of a rearview mirror that can be adjusted from the passenger compartment for motor vehicles or for adjusting the headlights or other parts on motor vehicles.

For example, the device according to the invention can be used in Housing of a rearview mirror or the headlights can be installed and with a switching device built into the instrument panel can be connected in order to be able to adjust these units as required from the driver's seat.

According to a further special feature of the invention is the device characterized in that the support member designed as a plate carries at least two electromagnets, each of which Cores surrounded by a magnetic coil protrude at right angles from one side of the support plate and on the other side of the plate carry arranged pole pieces that a cover plate is attached to the free ends of the magnetic cores parallel to the support plate that parallel to the support plate on the side of the pole pieces one by four bearing balls at a certain distance from the support plate held transfer plate is arranged, wherein the bearing balls in recesses in the support plate or the transfer plate be zw. Snap into both plates, that one is also the transfer plate and a spring that holds the bearing balls in mutual engagement, and a spring system that is not in contact with the workpiece, close to the transfer plate holding arrangement is provided, and that an electrical switching device for the magnet coils is provided and in is designed in such a way that initially at least one coil for pulling the transfer plate to its pole piece under lead out of the bearing balls can be excited from their depressions, then all magnet coils can be excited at the same time and thereby that Workpiece can be pulled to the transfer plate and the latter can be returned to its starting position while taking the workpiece with it.

00981 2/1165

Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Kettwiger Strasse 36

For a more detailed explanation of the invention, some exemplary embodiments are shown below with reference to the accompanying drawings individual explained; show it:

Figure 1 is a section through a rearview mirror according to the invention for vehicles;

) FIG. 2 shows part of the arrangement from FIG. 1 in more perspective

Depiction;

FIG. 3 shows a section through FIG. 1 along the line 3-3 in the viewing direction of the arrows;

FIG. 4 shows a section corresponding to FIG. 3 when actuated of the mirror;

Figure 5- is a section through Figure 4 along line 5-5 in Direction of view of arrows;

Figure 6 is a section through the mechanism after completion of the Activity;

FIG. 7 shows a section through another exemplary embodiment; and

Figure 8 is a section through a third embodiment the invention.

The shown in Figures 1-6, with the invention Device equipped rearview mirror consists of a foot 11 for mounting the mirror on a vehicle, a mirror housing 12 on a spindle 13 and one in this mirror housing arranged and positively connected to the spindle 13 electromechanical mechanism 14 for moving the mirror.

009 812/1165

Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Kettwiger Strasse

The spindle 13 carries on its seated in a receptacle 18 in the foot End of a ball head 16, over which a nut is screwed onto the foot to the ball 16 and thus the Spindle 15 in any desired angular position in the foot 11 to lock.

The adjustment mechanism 14 consists of four electromagnets with Coils 21 and soft iron cores 22, which on one side a support plate 23 made of non-magnetic material, for example Aluminum or an aluminum alloy, are arranged.

Each core 22 protrudes through an opening in the support plate 23 and carries a pole piece 24 on the other side of the plate. The part of each core extending through the plate 23 can be stepped to form a shoulder against which the plate 23 rests to hold the cores 22 in place.

The support plate 23 has a central opening 26 and the cores 22 are arranged at regular intervals on a circular line around this opening 26. A common magnetic disk 27 is fastened by means of screws 28 to the free ends of the cores 22, the coils 21 sitting between the two plates, so that these Magnetic plate 27 completes the magnetic circuit of the electromagnet. The magnetic plate 27 has a central opening with beveled edges to form a seat 29 for a hemisphere 31, which on the through the openings in the plates 27 and 23 'protruding spindle 13 is attached.

The free end of the spindle 13 is designed in the shape of a spherical head 30 and engages in an axial bore 32 of an armature plate 33, which is between the pole pieces 24 and a certain distance from the

009812/1165

Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Kettwiger Strasse

Plate 23 is arranged by means of screws 35 on this attached protective plate 34 for the mirror. The one in the hole

32 engaging ball 30 allows axial and angular movement the anchor plate 33 without radial displacement. The anchor plate

33 is on both sides with a material layer 36 with a high coefficient of friction covered, for example with a rubber layer,

h and is pressed against the protective plate 34 for the mirror by a compression spring 37 surrounding the spindle 13 between the anchor plate 33 and the hemisphere 31. As a result, the spring also loads the ball joint consisting of the hemisphere 31 and its seat 29 in the central bore of the plate 27.

It is evident that the mechanism 14, consisting of the Protective plate 34, the plates 23 and 27, the coils 21 and the Cores 22 can be angularly moved about the ball joint if sufficient force is applied to reduce friction between the anchor plate 33 and the protective plate 34 and the Overcome friction in the ball joint. A rotary movement of the mechanism around the spindle axis is made by an elongated Counteracted spring plate 28, which is arranged between the plate 27 and the mirror housing 12 on the spindle 30 and on two sides each has a lug 39 which engages in recesses 41 of the plate 27, while lugs 42 at each end this spring plate 38 in not shown, on the inside

•! of the mirror housing 12 arranged holding arrangements engage.

Since the mirror housing 12 is attached to the spindle 13, results this spring plate 38 also an additional preload of the ball joint, so that when the anchor plate 33 is moved away from the protective plate for the mirror, the 'exerted by the spring plate 38 Force can hold the mirror head against a movement that is otherwise due to gravity or other external Forces could enter. ■

009812/1165

Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Kettwiger Strasse

between the anchor plate 33 and the plate 23 is between the Pole pieces 24 an auxiliary anchor plate 43 to the soft iron or another material, which does not retain the magnetism, is arranged with an opening 44 through which the spindle 13 also passes through. This part 43 rests on viftr balls 46, which in recesses 47 between the pole pieces 24 in the same Spaced from the same. The plate 43 also has corresponding depressions 48 in which the ball 46 likewise snap into place and it is in a central position between the pole pieces 24 by tension springs acting on the ends of the plate 23 49 or the like. Held. The edges of the plate 43 are formed so that they are between the corresponding edges of the pole pieces 24 fit and run at a small distance therefrom '. The surface of the plate 43, which is the anchor plate 33 is opposite, carries a friction material 51 * such as an abrasive coating or the like. To result in the greatest possible friction between the two plates when they come into contact with one another.

To operate the mechanism, each of the coils 21 is over Lines 52 supplied with electrical power. These lines 52 enter the mechanism through an axial bore 53 of the Spindle 13, run through the mirror base 11 beforehand and step into the spindle 13 through a hole in the ball l6. They emerge from the axial bore 33 through a bore 54 and are connected to each of the coils. The other ends of the Coils are connected to the ground via a common ground line of the vehicle connected.

For actuation, the current is fed to two adjacent coils 21 via any suitable switch at the same time, whereby a magnetic field is built up, which the auxiliary

00 9 8 Hr £ / -n65

Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Kettwiger Strasse

anchor plate 43 pulls towards the pole pieces 24 of these energized coils. When moving the small distance between the At the edges of this armature plate 43 and the edges of the pole pieces, the armature plate 43 runs onto the balls 46, as shown in FIG. 3b is shown. The edge surfaces of the armature plate 43 and the pole pieces 24 preferably have a non-magnetic coating,

) to prevent a magnetic "sticking effect". Through the

Actuating the switch, the other two coils are then supplied with current, whereby the armature plate 33 against its pole piece © 24 is pulled and against the action of the spring 37 to Surface of the anchor plate 43 moved towards. The anchor plate 33 presses the auxiliary anchor plate 43 against the plate 23 and causes it this by being centered on the bearing balls 46 and thus in an opposite direction to their original Movement moving direction. The friction linings on the anchor plate 33 and the auxiliary anchor plate 43 ensure that the lateral movement of the auxiliary anchor plate 43 during centering causes a corresponding displacement of the anchor plate 33 on the bearing balls 46. Since this lateral movement of the anchor

w plate 33 is only a relative movement with respect to the mirror head and since the spindle 13, the ball of which also moves in the same way, is attached to the mirror base 11, the movement actually occurring is a movement of the mirror head and thus of the mirror carried by it in the direction of the initial movement of the Auxiliary anchor plate 43 in mirror housing 12.

As soon as the power supply to the solenoid coils is interrupted, the anchor plate 33 is pressed against the mirror protection plate by the spring 37 34 pressed and both plates are in a firm frictional engagement against each other.

009812/1165

Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Kettwiger Strasse

By intermittently supplying power to the coils 21 in the above Manner, the mirror head is made to move gradually through any desired angle, the size of the Winkeis is only limited by the mutual dimensions of the parts.

The electromechanical mechanism shown in FIG. 7 corresponds essentially to the planar design, so that the same reference numerals have been used for corresponding parts. In this embodiment, the spindle 13 is in a fixed angular position with respect to the mirror base 11 and is held in this position by means of a spring 61 and a screw 62 through which the spindle 13 is drawn into the mirror base 11. A longitudinal movement of the spindle is prevented by the sleeve 63, which is inserted in the mirror base and rests on a shoulder 64 through which the spindle 13 passes, as well as a thickening 66 of the spindle, which rests on the sleeve. A plurality of bearing balls' 67 are arranged between this thickening 66 and the sleeve 63 and lie in grooves 68 which are formed in both parts. Any tendency of the spindle to rotate about its axis is counteracted by the force of the spring 61, which pulls the thickening 66 against the Laigerkugeln 67:>.

The operating mechanism for the mirror consists of the plates 23 and 27, which are arranged on both sides of the cores 22 and the coils 21 and one below the other in the manner already described are connected. The plate 27 has a central, axially extending flange which has a socket 71 for a ball 72 which is arranged on the spindle 13. On the back of the plate 27, a holding member 73 is attached, which the ball 72 in the pan 71 holds.

009812/1165

Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Kettwiger Strasse

OK

A slot 70 is formed in the flange forming the pan 71 and a pin 74 protrudes from the ball into slot 70, by a rotation of the pan 71 and, as a result, of the actuating mechanism to prevent the axis of the spindle 13. A with one end attached to the plate 27 Peder76 engages to the pin 74 in order to create a preload between the spindle 13 ) and the operating mechanism. The mirror head is

supported opposite the spindle by a heating arrangement, which consists of a multi-disk magnetic coupling on a mirror support and coupling disks firmly connected to the mirror support 78 as well as coupling disks which are movable with respect to the mirror carrier 77 79 is formed, which are supported coaxially on a shoulder 81 of a thin main anchor plate 82.

The movable clutch plates 79 are between the fixed Coupling parts 78 arranged, and between the main bank rp latte 82 and the outermost fixed coupling part 78 there is a heavier anchor plate 83 # which is supported by the Main anchor plate 82 is held at a certain distance by a resilient washer 84.

The stationary coupling parts 78 are fastened by means of screws 86 to the rear of the mirror support 77 and have larger openings through which the extension 8l passes, so that a lateral relative movement of the extension 8l in the Levels of the fixed coupling parts 78 can be achieved.

The holes in the movable clutch disks 79, however, are only so large that a tight fit of the extension 8l in these holes is guaranteed and thereby a lateral relative movement

009812/1165

19318AO

Patent attorneys Dr. W. Andrejewski, Dr. M. Honlce, 43 Essen, Kettwiger Strasse

of the approach a sliding movement of the movable clutch disks 79 between the stationary coupling parts 78 results.

The extension 8l also protrudes through a relatively large opening 88 in the mirror support 77 and is held therein by a further spring washer 89 held, which presses the main anchor plate against the mirror support 77.

In addition, the extension 8l carries a further disk 85, so that the spring washer 84, the stationary coupling parts 78 and the movable coupling parts 79 between the anchor plate 83 and this disk 85 is pressed together.

The extension 8l has an axial bore into which the ball 30 at the outermost end of the spindle 13 engages.

The mirror support 77 carries a mirror 91, which by spacers 92 at a certain distance from this support plate is held.

A auxiliary anchor plate 43 sits on bearing balls 46 in depressions the plate 23 between pole pieces 24, as already described in the first embodiment.

In this embodiment, too, it is evident that the mirror head consists of the mirror carrier 77, the stationary coupling parts 78, the plate 23 carrying the coils 21 and the plate 27 when energized the coils around the ball 72 and the approach 8l opposite the movable coupling disks 79 * of the main anchor plate 82 and the anchor plate 83 carried by the spindle 13 in the mirror base 11 be moved.

009812/1165

19318AQ

Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Keftwiger Strasse 36

- Mk-

For actuation, a weak voltage is fed into either one or two adjacent coils 21 via the lines 52, so that the auxiliary anchor plate 43 is drawn in to one coil or to a position between the two coils. Then werden.alle coils simultaneously fed at full voltage, and the resulting magnetic field draws the armature plate 82 main length to the heavy armature 83 against the pole pieces 24th

The main anchor plate 82, which is covered with a corresponding friction material, contacts the auxiliary anchor plate 43, and the anchor 83 is then drawn towards the anchor plate 82, whereby the spring plate 84 is compressed and the force compressing the coupling parts is canceled. The pressure of the main anchor plate 82 and the anchor plate 83 on the auxiliary anchor plate 43 leads the bearing balls 46 back into the recesses of the plate 23 and the auxiliary anchor plate 43, whereby a relative movement between the plate 23 and the auxiliary anchor plate 43 is generated. Since the auxiliary armature plate 43 is in frictional engagement with the main anchor plate 82 which is supported by the spindle 13, the plate 23 and the ψ connected thereto including parts of the mirror 91 to be

shifted an amount which is equal to the initial displacement of the auxiliary anchor plate 43 and takes place in the same direction.

An interruption of the current flow to the coils 21 releases the magnetic coupling armatures 82 and 83 and these are through the Spring plate 89 moved in such a way that the movable clutch plates 79 pressed against the stationary coupling parts 78 will.

0 0 9 8 12/1165

Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Kettwiger Strasse

The switch for controlling the excitation of the coils 8l can either be designed as a hand-operated pressure switch, which initially selectively two adjacent coils with electricity 'and then connects all coils to the power source, or as a semi-automatic device, which optionally one or two adjacent coils have a low voltage and after a certain time the full voltage is applied to all coils. Such shift units can be used in a suitable Way to install in the instrument panel of the vehicle, for example the switch button can have the shape of the mirror and a movement of the switch button in the desired direction of movement of the mirror results in a corresponding step-wise movement of the mirror in this direction.

The switching elements can also operate via a solid-state circuit, whereby precautions are taken to correspond to the mirror To give impulses so that he moves quickly from one position to another, this movement being a number of movements of the mirror moving mechanism.

Arrangements to prevent feedback, for example diodes, are preferably provided in the circuits for the coils, to ensure isolation of the energized coils from the other not yet energized coils.

While the invention has been described above in its application to a ■ rearview mirror for vehicles, the The mirror is attached outside the driver's cab and can be adjusted from inside the driver's cab Apply the invention to any other area as well

0098 12/1165

Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Kettwiger Strasse 36

where a gradual or impulse-induced movement is desired. So can be with the invention, for example also control the headlights of a vehicle or any other arrangement that is to be moved or adjusted and the invention can also be modified in such a way that it can be used for industrial purposes, wherein a such an application example is to be explained in detail below.

Such an exemplary embodiment is shown in FIG. 8, a device being provided in order to move a workpiece 116 in two directions. This device has two coils 100 which are arranged on a plate 104 at a certain distance from one another by joeheads 101. Pole pieces 126 protrude through the plate 104 and a cover plate 102 is arranged and fixed ^{at a certain distance from the pole pieces 126 by screws 103 a.} At each end of the plate 104, leaf springs 125 are attached, which hold the workpiece 160 at a certain distance from the plate 104 below the cover plate 102.

In a central opening of the plate 104, a lever 105 is arranged with a ball head 108 at one end and a further head 130 at the other end. The ball head 108 engages in a recess II5 in an attachment attached to a long spring 117. A retaining plate 151 is attached to the lever 105, dep held by the coil spring 106 in the position shown.

Armature parts 120 made of magnetic material, such as soft iron, are attached to the ends of the spring 117 so that if, for example the right coil is energized, the armature part 120 next to

009812/1165

Pgtentanwaite Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Kettwiger Strasse

this coil is attracted to this. In doing so, it pulls the spring 117 with it and pivots the lever 105. Then both Coils energized, causing the workpiece Ho to become the pole pieces 126 is pulled down. The workpiece II6 touches the Spring II7 and presses it between itself and the plate 104 together so that their ends are pushed apart. However, since the right end of the same rests on the right pole piece 126, the spring must spread to the other pole piece. Since the underside of the workpiece is in frictional engagement with the In the middle of spring II7, the workpiece becomes the left pole piece 126 moved there.

If power to both coils is interrupted, press' the leaf springs 125 remove the workpiece HO from the spring II7, which by the spring connected to the lever 105 106 is centered between the pole pieces.

Of course, this training can also be modified in such a way that the workpiece Ho is at right angles to one another in two extending directions can be moved by arranging two more coils in such a way that they act on armature parts 120 » which are perpendicular to the direction of movement induced by the coils 100.

Expectations;

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Claims (21)

Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Kettwiger Strasse Jb Expectations . A device for the controlled movement of a workpiece in a certain direction, characterized in that it has a support element for the workpiece, a transfer plate connected to the support element, arrangements for shifting the transfer plate parallel to the support element, arrangements for shifting the workpiece essentially at right angles to the plane of the support element when the transfer plate is moved, and arrangements connected to the transfer plate in order to counteract their direction of movement when the workpiece is in contact to move and thereby give the workpiece a corresponding movement. 2. Apparatus according to claim 1, characterized in that the transfer plate (43) is substantially parallel to the in one certain distance from the support member (23) is mounted on several rollers (46) which in recesses (47; 48) in one or engage both parts, and that the arrangement for moving the transfer plate is designed such that the plate to such a piece is moved further that the rollers are lifted out of the recesses. 3. Apparatus according to claim 2, characterized in that the rollers consist of at least three bearing balls (46) which are inserted into corresponding recesses (47; 48) in the transfer plate (43) and the support member (23) engage. 4. Device according to one of claims 1-3, characterized in that that the contacting surfaces of the transfer plate (43) and the workpiece (33) with a material relatively high coefficient of friction are coated. 009812/1 165 Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Keftwiger Strasse 36 5. Device according to one of claims 1-4, characterized in that an arrangement (37) is provided through which the effect of the arrangement (14) moving the workpiece is impaired. 6. Device according to one of claims 1-5, characterized in that that the arrangement for moving the transfer plate (45) consists of at least one electromagnet (21, 22) with one Pole piece (24) is made close to the transformer plate, whereby when the electromagnet is excited, a train on the transfer plate from the pole piece can be achieved. 7. Apparatus according to claim 6, characterized in that the support member designed as a support plate (23) has several electromagnets (2.1, 22) with equidistant from and around the Transfer plate (43) arranged pole pieces (24) carries and these electromagnets can be excited either separately or lying side by side in pairs. 8. Apparatus according to claim 6 or 7, characterized in that the pole pieces (24) protrude so far that the transfer plate (43) abuts with its corresponding edge against the pole piece or pieces and can thereby be limited in its movement when the tightening force is obtained. >> 9. Apparatus according to claim 7 # characterized in that the electromagnets (21, 22) the arrangement for port movement of the Form workpiece (33) and all to generate a tensile force moving the workpiece in the direction of the pole pieces (24) are excitable at the same time. 009812/116 5 Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Kettwiger Strasse 10. Apparatus according to claim 9 »characterized in that the workpiece consists of an anchor (33) with a central bore (32) for receiving one end (30) of one opposite the support member (23) pivotably mounted spindle (13), whereby a displacement of the armature parallel to the plane of the support member Pivoting movement of the spindle is achievable « 11. The device according to claim 10, characterized in that the spindle (13) through an opening (26) in the support plate (23) which is practically coaxial with the electromagnets (21, 22) passes through it and the armature (33) is displaceable and pivotable in the axial direction with respect to the spindle (13). 12. The device according to claim 1, characterized in that the transfer plate made of a hood-like spring plate (117) with marginal edges resting on the support member (104) and to limit the movement of the transfer plate along the plane of the supporting member limiting members (126) are provided. 13. The device according to claim 12, characterized in that the workpiece (106 against the hood-like spring plate (117) moving arrangement (100) is designed in such a way that the spring plate by pressing together between the workpiece and the Support member (104) is deformable in such a way that its through the limiting members (126) unobstructed edge parts and their hood-like middle part can be displaced in a direction opposite to their initial displacement · 009812/1165 Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Kettwiger Strasse Jß 14. Apparatus according to claim 13, characterized in that the arrangement for moving the spring plate (II7), the arrangement for port movement of the workpiece (II6) and the limiting organs of at least two electromagnets (100) arranged on the support element (104) with protruding from the support element towards the Pole pieces (126) pointing towards the workpiece. 15. Apparatus according to claim 14, characterized in that the hood-like part of the spring plate (117) and the support member (104) is a spring plate centering between the pole pieces (126) Tension spring (106) is assigned. 16. Apparatus according to claim 14 or 15, characterized in that that one the workpiece (II6) at right angles from the pole pieces (126) pushing further tension spring (125) is provided and with the workpiece without direct contact with the hood-like Spring plate (117) close to the same holding guide members (102, 103) cooperates. 17. Device according to one of claims l - 16, characterized in that that designed as a plate support member (23) at least carries two electromagnets, each of which is controlled by a solenoid (21) Surrounded cores (22) protrude at right angles from one side of the support plate and arranged on the other side of the plate Carry pole pieces (24) that a cover plate (27) is attached to the free ends of the magnetic cores parallel to the support plate, that parallel to the support plate on the side of the pole pieces one by four bearing balls (46) at a certain distance from the Support plate held transfer plate (43) is arranged, the bearing balls in recesses (47, 48) in the support plate or the transfer plate respectively. Snap into both panels that further 00981 2/1165 Patent attorneys Dr. W. Andrejewski, Dr. M. Honke, 43 Essen, Kettwiger Strasse ■ ΐυ one the transfer plate and the bearing balls in one another Interlocking suspension and a workpiece (82, 83, 84) without contact close to the transfer plate holding arrangement is provided, and that an electrical switching device for the magnetic coils are provided and designed in such a way that initially at least one coil for pulling the over- ^ support plate to its pole piece with the lead out of the bearing balls can be excited from their depressions, then all magnetic coils can be excited simultaneously and thereby the workpiece the transfer plate can be pulled up and the latter with you of the workpiece can be returned to its original position. l8 .. Device according to claim 17 *, characterized in that the workpiece is formed by a magnetic coupling and this several coupling disks (78) fixed relative to the support member and several movable coupling discs (79) arranged between the fixed coupling discs and one between the support member and the coupling discs arranged anchor plate (82) with a projection (8l) which points away from the support element and passes through openings in the "movable clutch disks", springs (89; 76) which act on the projection and the support element and push the anchor plate away from the support element are provided 19. The device according to claim l8, characterized in that one * spindle (13) engages in a bore of the anchor plate attachment (8l) and one in a socket (71) of the cover plate (27) mounted ball (72), whereby a relative movement the anchor plate (82) a pivoting of the spindle about its in the socket mounted ball can be achieved. 0098 12/1 165 193184Q Patent attorneys Pr. W. Andrejewski, Dr. M. Honice, 43 Essen, Kettwiger Strasse 20. Apparatus according to claim 19, characterized in that the workpiece carries a mirror (91) and on the spindle (IJ) a mirror housing (12) and a mirror carrier (11) are attached and thereby a movement of the workpiece when the workpiece is moved Mirror in the mirror housing is achievable 1st. 21. Device according to one of the preceding claims, characterized characterized in that a twist between the Workpiece and the support member around a right angle to the plane of the Support member extending axis preventing arrangement provided is. PAe DrAndrejlewski, Dr Hanke. 009812/1165 e e rs eι te