NL8602835A - BRAND EQUIPMENT, CONTROLS, SELECTOR AND RESERVOIR FOR SUCH A DEVICE. - Google Patents

Description

TT-5 1 i, «" Marking device, as well as operating device, selection element and reservoir for such a device ".

The invention relates to a marking device comprising: a needle carrier with a collection of hollow needles arranged in matrix form, which are movable in the longitudinal direction between an active and an inoperative position and each have an inlet and an outlet opening; an exchangeable reservoir of contrast fluid which, when the respective needles occupy the operative position, communicates with the cavities in these needles through the inlet openings; an interchangeable selection element which, depending on the symbol to be applied, can be coupled to a number of needles of the set; an operating member which cooperates with the needle carrier, the selection element and the reservoir and which comprises pressure means of which the first pressure means, upon actuation by the selection element, move said number of needles to the active position and press the free ends into the object to be marked and second pressure means apply pressure to the liquid in the reservoir and squeeze the liquid through the cavities through the outlet openings of said number of needles into the object.

A marking device of said type is known from EP-A-25252. In this known marking device, the selection element, which is designed as an easily exchangeable plate, contains a number of stops, which press against the ends of a number of needles by the first pressing means in order to apply a symbol in the object. In this way a number of needles of the matrix collection are moved to the active position with the aid of the selection element depending on the symbol to be applied. The remaining needles remain in the inactive position. The selection element further comprises a number of fluid channels, where 8602835 i-TT-5 2 opens at each fluid channel near a stop. This mouth of each fluid channel is coupled to the inlet opening of one of the selected needles, while the other mouth of each fluid channel is coupled to the reservoir. The contrast liquid is thus pressed from the reservoir to the needles via the selection element. In order to be able to effect a fluid-tight coupling of each of the liquid channels with the reservoir and the needles, an accurate fit is required with the known device 10. This requires great precision in the manufacture of the selection elements, which are often intended for single use only, while the needles for the coupling on the side of the inlet openings must be made precisely, so that the needles must have a certain minimum diameter. The latter impedes the pursuit of thinner needles with the aim of easily penetrating the needles into the object.

The object of the invention is to simplify the selection element with a marking device 20 of the above type and to be able to easily perform the coupling between the selection element and the needles.

The invention is characterized for this purpose in that the needle carrier contains a liquid chamber which communicates with the reservoir; the inlet openings of the needles in the inoperative position with respect to the liquid chamber are closed, while the inlet openings of these needles 30 are opened with respect to the liquid chamber when the said number of needles are moved by means of the selection element to the active position.

In the marking device according to the invention, the selection element does provide a liquid connection between the reservoir and the cavities of the selected needles, but this connection extends outside the selection element via the liquid chamber in the needle carrier and a connection of the liquid chamber to the reservoir . The needles are thus reliably and simply connectable to the reservoir. The selector 8602835 4 ft TT-5 3 itself only serves to apply pressure to needles in order to move them to the active position and push them into the object. The advantage of this is that the selection element can be designed as an inexpensive mass-produced product, for instance from plastic. Due to the connection of the cavities of the needles with the liquid chamber within the needle carrier, blockage of the inlet openings as a result of contamination is effectively avoided. This manner of fluid connection also allows for a far-reaching miniaturization of the needles, which can be advantageous for easy penetration of the needle into the object and for the application of a relatively small or fine-mesh symbol. The marking device according to the invention is advantageously applicable for tattooing animals. However, the device is also suitable for marking other objects, at which a mark can be applied with the aid of needles and contrast liquid.

A preferred form of a marking device according to the invention, wherein the first pressure means comprise a pressure element co-acting with the needle carrier to move said number of needles to the active position by means of the selection element and to press them into the object, characterized in that the needle carrier with the needles is movable relative to the pressure element in the longitudinal direction of the needles between a first and a second position, as a result of which movement a coupling or a decoupling occurs between end parts of said number of needles and the selection element.

The marking thus takes place in two phases, namely first the object is fixed relative to the needle carrier and then after coupling of the needles to the selection element, the number of selected needles 35 is forced into the object. This provides good quality in marking.

Another preferred form of marking device, in which the needle carrier has a base plate with openings, 8602835 * TT-5 4 through which the free ends of the needles are movable, is characterized in that when the pressure element is actuated, the needle carrier relative to the pressure element moves against spring force from the first to the second position 5, after the foot plate has been pressed against the object, and that the needle carrier has a pressure plate, which after coupling of needles and selection element by said number of needles during movement to the active position against spring force is pressed towards the 10 foot plate. The object is thus securely fixed via the base plate, while the pressure plate ensures that the needles press against the selection element under a good even spring tension.

In this connection, a further preferred form is characterized in that after the actuation of the pressure element has ended, the pressure plate moves away from the foot plate under resilience, thereby moving said number of needles together back to the unsavory position. All needles in the active position are drawn under resilience simultaneously with the object via the pressure plate as soon as the symbol is applied and the pressure of the pressure element is released. Since the printing plate is also able to exert pressure on needles with a relatively small diameter, the needles can have a small diameter.

Another preferred form is characterized in that the pressure plate presses the needles in the inoperative position against a stop plate of the needle carrier, which stop plate positions the needle carrier in the first and in the second position relative to the pressure element. In the end positions, the needle carrier is properly positioned with respect to the pressure element by means of the stop plate, while the pressure plate ensures that the needles are well retracted in the inoperative position within the foot plate.

In this respect, a preferred form is characterized in that each needle contains a solid end part, a hollow central part, provided with the inlet opening and a 860 28 3 5 * * ί TT-5 5 hollow needle part, provided with the outlet opening, wherein the central part relative to the other two parts has a larger diameter and lies in the inoperative position of the needle between the stop plate and the pressure plate.

Each needle in the inoperative position is thus well positioned with the free end within the opening in the foot plate.

Another preferred form is characterized in that the liquid cone chamber is present in the needle carrier between the pressure plate and the stop plate, the needles with the central part extend through the liquid cone chamber and are in the operative position with the inlet openings in the liquid condenser chamber. Thus, a connection is possible in a simple manner in the operating position of the needles between the reservoir and the cavities in the central part and the needle part of the needles.

A further preferred form, in which the operating member comprises an operating lever, is characterized in that the lever carries a hinged pawl near one end, which part of the first pressing means, which pawl exerts a force when energized from an active position on the pressure element during a joint softening with the lever hinges to an inoperative position and hinges in an initial position 25 of the lever to the active position under resilience. Thus, a ratchet mechanism is present on the helboom, which on the one hand noticeably indicates the completion of the marking with a click, and on the other hand returns to the operating position elliptically, without hindering the backward movement of the helboom. This return is also done with a click.

In this connection, a further preferred form is characterized in that the operating member is provided with third pressure means, comprising a pumping device, which is energized during pivotal movement of the boom and releases pressure on a piston present in the reservoir, which piston forms part of the second pressure means and continuously pressurizes the liquid solid in the reservoir and in the liquid solid chamber 8602835 f ττ-5 6 ·%. The third pressure means ensure that pressure is constantly applied to the liquid in the reservoir and the liquid chamber via the lever movements after operation of the device. Preferably the pumping device is energized during the backward movement of the operating lever. Immediately after each actuation of the pressure element, a certain amount of liquid is supplied to the free ends of the needles by means of the piston, the piston being moved one step at a time. Due to capillary action, the remaining liquid remains in the needle cavity, so that no ink interruption can occur, which is advantageous for achieving a maximum effect and for preventing blockages.

A further preferred form is characterized in that the reservoir is designed as an elongated cartridge, which is positioned in the actuator by means of a compression spring and is located near a first end via a non-return valve with the pumping device and near a second end via a non-return valve. is connected to the liquid chamber. An easily manageable system is thus obtained, wherein the reservoir is easy to replace. The check valves provide continuous pressure on the liquid in the reservoir 25 and in the liquid or chamber.

The invention further relates to an operating element on an exchangeable reservoir, as well as to an exchangeable selection element, which can be used with such a marking device.

The invention will be further elucidated on the basis of an exemplary embodiment shown in the drawing, to which, however, the invention is not limited. Hereby show:

Figure 1 shows a perspective view of a marking device according to the invention}

Fig. 2 to an enlarged scale, partly a section through and partly a view of the device according to Figure 1; 8602835 ττ-5 7 (

Fig. 3 is a view of the selection element used in the marking device;

Fig. 4a, B, C are a section along lines IV-IV A, B, C in FIG. 2, wherein the marking device is shown in a rest position, or in an intermediate position, or in an operating position, respectively.

The marking device shown in Figures 1 and 2 comprises an operating member 1, as well as a rectangular housing 2, which encloses various parts of the marking device. The housing 2 is situated around a recess 3 in which an operating lever 4 of the operating member 1 is arranged. As shown in Fig. 2, the lever 4 is pivotable about a journal 5 connected to the housing 2, around which a spring 6 is wound, which presses 15 with end parts 6a and 6b against an inner wall 2b of the housing 2 and against the lever 4, respectively,

Thus, the spring 6 presses the lever 4 according to the arrow A around the journal 5 in an initial position. The lever 4 comprises a handle 7 and carries a pawl 9 on a relatively short actuating part 8 situated on the other side of the journal 5. The pawl 9 is pivotally connected to the part 8 near the end of the journal 5 facing away from the journal 5. part 8. A spring 10 presses the catch 9 into the operating position shown in fig. 2, according to arrow B around a journal 11, in which position the catch 9 lies against a stop (not shown).

The pawl 9 forms with the lever 4 first pressure means of the operating member 1, which also includes a pressure element 12 co-operating with the pawl 9. For this purpose, the pressure element 12 comprises a stop edge 12a, against which the free end of the catch 9 can abut. The pressure element 12 is from the position according to FIG. 2 can be moved rectilinearly according to an arrow C and is guided by means of guide pins 13, one of which in FIG. 2 is visible. A coil spring 14 is wound around each pin 13, which, as a tension spring, attempts to move the pressure element 12 in a direction opposite to the arrow C, which movement is limited by a shoulder 15 in the housing 2 8602835 »TT-5 8. Thus, the pressure element 12 within the housing is in an initial position, shown in FIG. 2, positioned.

The pressure element 12 is provided at a distance from the stop edge 12a with a jaw 16, which in Figs. 4A, B and C is shown. The jaw 16 comprises a number of slotted recesses 1? into which interchangeable selection elements 18 can be slid. Retracted, each selection element 18 as shown in FIG. 4A, B, 10C in the recess 17. In FIG. 3 shows an example of a selection element 18, which is intended to place the number 3 in an object in a manner yet to be described. Thus, for example, four selection elements can be placed in the mouth 16, whereby a symbol with markings, for instance containing four numbers and / or letters, can be arranged during the marking operation. It goes without saying that the marking device is alternatively feasible for simultaneously applying more or less than four marks containing symbols. Alternatively, the jaw 16 can be designed in such a way that one selection element 18 containing a number of markings can be used.

Depending on the mark to be applied, the selection element 18 comprises a number of channels 19 extending parallel to the arrow C over the entire thickness of the element, while the selection element 18 further comprises a handle 20, which is located in a recess after insertion 2a in the housing 2. It may be advantageous here if the handle 20 30 is provided with an indication of the mark which is applied with the selection element 18, the indication being visible from the outside of the housing. A number of, for example ten, regularly distributed pressure springs 21 are included in the mouth 16, which presses against a stop plate 22 of a needle carrier 23. Thus, the springs 21 in FIG. 4a the stop plate 22 against a chest 16a on the jaw 16, if the pressure element 12 is in the starting position. In this situation, the needle carrier 23 is in a first position. The needle carrier 23 further comprises two main parts 2h and 25, a foot plate 26 and a number, for example ten, regularly distributed bushes 27, through which bolts 28 are inserted, which are screwed into the stop plate 22 and thus the combination of connect stop plate 22, main parts 24 and 25 and foot plate 26 to each other. On the side of the jaw 16, the free ends of the bolts 28 to 10 protrude some distance outside the stop plate 22 and thereby serve as a guide for the springs 21. Furthermore, around each bush 2 / a compression spring 29 is provided, which has a pressure plate 30 in the first position of the needle carrier 23 presses against the main part 25 and rests against the foot plate 26.

In the needle carrier 23, on the separation between the main parts 24 and 25, there is provided a liquid chamber 31 which, in a manner to be described, is connected to an exchangeable liquid reservoir 32 (Fig. 2) with contrast liquid. In the needle carrier 23 there is furthermore a collection of straight needles 33 arranged in matrix form, which are arranged in the longitudinal direction according to the arrow C in Fig. 4a are movable between one shown in FIG. 4a inoperative position and one shown in FIG. 4C shown operating mode. Each needle 33 comprises a rod-shaped end portion 34 which is in the position according to FIG. 4a extends through an opening in the stop plate 22 to some distance above the plate 22. The end part 34 connects to a cylindrical, hollow central part 35 with a larger diameter than the end part 34, which central part with shoulders 35a and 35b is positioned between the stop plate 22 and the pressure plate 30 in the main parts 24 and 25. shoulder 35b connects the central part 35 to a hollow needle part 36, which extends through openings 30a and 26a in the pressure plate 30 and the foot plate 26. In the inoperative position of the needle 33 of FIG. 4, the chamfered free end of the needle portion 36, in which end there is an outlet opening 8602835 (TT-5 10) of the needle 33 is located just inside the opening 26a.

The central part 33 extends through the liquid chamber 31. Above the liquid chamber 31 there is a closing plate 37, which surrounds the needle 33 to prevent the leakage of contrast liquid. In a manner not shown, a sealing plate is also present on the underside of the liquid chamber 31. The central part 35 is provided with an inlet opening 35c above the closing plate 37. Due to the arrangement shown in FIG. 4a, the liquid cannot flow from the liquid chamber 31 into the needle 32 and therefore cannot escape. In order to provide a guide for the free ends of the end parts 34 in a manner to be described in more detail, a funnel-shaped opening 38 is provided for each needle 33 in the jaw 16 below the recess 15, which opens into the recess 17 and when retracted selection element 18 can connect to a channel 19 in the element. Thus, in the illustrated embodiment, a total of sixty needles 33 are provided, for example, which are arranged in four 3x5 matrix sets and with which four marks can be applied simultaneously in an object.

Under the foot plate 26, a lower jaw 39 is provided as part of the housing 2, the situation shown in FIG. 4a the distance between the lower jaw 39 and the foot plate 26 is sufficient to allow the object to be mounted. It is noted that the distance between the foot plate 26 and the lower jaw 39 can be adjustable in a manner not shown.

The fluid chamber 31 is connected outside the needle carrier 23 to a hose 40 (Fig. 2), which connects to a coupling piece 41, in which a non-return valve is present, which prevents liquid from flowing back from the chamber 35 to the coupling piece 31 connected reservoir 32. The reservoir 32 is designed as a cylindrical, elongated pattern and is connected at the other end to a coupling piece 42. In the bottom of the housing 2, a hinged valve 43 is present in the 8602835 »TT-5 11 (see also Fig. 1), making it possible to change the reservoir 32. Inside the housing, a compression spring 44 is present, which presses the reservoir via the coupling piece 4l in the direction of the coupling piece 42 and thereby both a good positioning of the reservoir in the operating member, as well as a good liquid-tight connection of the coupling pieces 41 and 42 on the reservoir. For exchanging 10, the reservoir need only be moved to the left according to the arrow D against the pressure of the spring 44 against the pressure of the valve 43 and opened from the coupling pieces 41 and 42.

The reservoir 32 contains a piston 32a, which forms second pressure means of the operating member with the reservoir and exerts pressure on the liquid in the reservoir 32 and therewith in the liquid chamber 31. Also present in coupling 42 is a non-return valve, which traps a fluid, such as air, present in the reservoir 32 under pressure to the right of the 2 ° piston 32a and which ensures that the pressure of the piston 32a on the liquid is maintained .

The coupling piece 42 is connected via a conduit 43 to a pumping device 46, present near the top of the housing 2. The pumping device 46 comprises a cylinder 47 and a piston 48 present therein and forms third pressure means of the operating member 1. The piston 48 is connected to a sucker rod 49, which can slide with the ball-shaped free end 49a along an edge of the actuator 8 of the lever 4, such that during the return pivot of the lever 4 supported by the spring 6 according to the arrow A in fig. 2 the pump rod 49 is moved in the direction of arrow E, which produces pressure on the piston 32a.

35

The operation of the marking device according to the invention is as follows;

Before a marking operation can commence, four selection elements 18, each provided with an 8602835 TT-5 12 symbol to be applied, are pushed through the recess 2a into the recess 17. As already mentioned, the device can alternatively be suitable for inserting a multiple selection element, in which case inserting one selection element suffices. The operating member 1 is already provided with a reservoir 32, the piston 32a of which is actuated by pressing the lever 4 once via the pumping device 46, on which the piston 32a keeps the liquid under pressure. The marking device is now located in the starting position, shown in fig. 1, 2 and 4a.

Now the object to be marked, for example an animal's ear to be tattooed, can be pushed into the space between the foot plate 26 and the lower jaw 39. As already noted, the distance between these parts can optionally be adjusted depending on the thickness of the object .

Then, the operating lever 4 is pivoted by hand opposite to the arrow A in Fig. 1, 20, which has various partly simultaneous effects.

In the operating position, the catch 9 presses against the stop edge 12a and presses the pressure element 12 according to the arrow C parallel to the longitudinal direction of the needles 33 in the direction of the lower jaw 39 against the force of the spring 14. As a result, the jaw 16 moves from the starting position according to fig. 4A to the end position according to FIG. 4C. A position of the jaw 16, in which a number of needles 33 just protrude into the object, is shown in FIG. 4b shown -30. The movement of the jaw 16 causes the object to jam directly between the base plate 26 and the lower jaw 39j, whereby the object is fixed between these parts. A continuous movement of the jaw 16 results in that initially the needle carrier 23 as a whole moves relative to the jaw 16 against the pressure of the springs 21, up to the free ends of end parts 34 of a number of needles 33 via the 8602835 TT-5 13 openings 38 run up against the closed surface of the selection element 18. Thus, as the jaw 16 continues to move, the needle carrier 23 moves from the first position according to FIG. 4A to a second position according to FIG. 4c, the surface of the stop plate 22 pressing against the jaw 16.

The coupling of the end parts 34 with the selection element 18 causes the selected number of needles to move downward according to the arrow C and to insert into the object under continuous pressure of the jaw 16.

In FIG. 4b and 4C are shown how a needle 33 remains in the inoperative position, since the end portion 34 of this needle projects into a channel 19 of the selection element

18. Moving the selected needles 33 downwards results in the pressure plate 30 according to arrow C

is pressed down against the force of the springs 29.

Shortly before reaching the operating position, after the needles have been inserted into the object, the inlet openings 350 of the needles 33 are moved into the liquid chamber 31, allowing the contrast liquid to flow into the needles towards the outlet openings . This time of supply of liquid is determined by the height of the liquid chamber 31. As a result of this, when the active position is reached, the liquid flows into the object via the outlet openings and the mark is applied. Due to the fluid flow and the air pressure, the piston 32a, seen in FIG. 2, moved to the left (arrow D), this displacement is preferably due to the dimensioning of the various parts sufficient to supply a metered amount of liquid to the needles for one marking operation. After completing the foregoing, the catch 9 is released from the pressure element T2 with continuous pivoting of the lever 4 oc. The result of this is that the springs 14, supported by the springs 21, move the pressure element 12 and thus the jaw 16 back against the arrow C. The result of this is that the pressure plate 30 can now move back 8602835 ττ-5 14 under the influence of the force of the springs 29, which means that the selected number of needles 33 move back smoothly, in a straight line to the inoperative position according to FIG. 4A. During this movement, the inlet openings 35C are simultaneously closed again, so that the liquid chamber 31 is now also closed. Due to capillary action in the hollow needles, the liquid remains in the needles, so that no contamination can penetrate through the outlet openings into the needles 10 and the liquid flow to the outlet openings can start immediately on a subsequent marking operation. Thus, the needle carrier finally takes the first position according to FIG. 4A in.

After reaching the energized position, the lever 4 is moved back by the spring 6 to the starting position. This movement is possible since the catch 9 can pivot and thereby pass the pressure element 12. The various times of interest for operation are recognizable by clicking sounds, caused by the pawl 9 · The backward movement has, in the manner already described, produced an energization of the pumping device 46, whereby again sufficient pressure on the piston 32a and thus on the liquid chamber 31 is present for a subsequent marking operation. Immediately after reaching the starting position of the lever 4, the device is ready for applying a mark to a next object. If necessary, a different selection element can be retracted if a different mark is desired.

An advantage with the marking device according to the invention is the use of an exchangeable selection element which is inexpensive to implement and which is not subject to high tolerance requirements. Another advantage is the multi-stage marking cycle, namely the fixation phase, in which the object is clamped, the penetration phase, in which the needles penetrate the object, the liquid supply phase, in which liquid penetrates through the needles, the phase of withdrawing the 8602835 TT-5 needles from the object and the pressure build-up phase, on the liquid for a subsequent marking operation. Furthermore, the easy exchangeability of the reservoir 32 is favorable, so that as little time as possible is lost if the reservoir has become empty after a number of marking operations. The separate functions of the three parts 3, 35 and 36 of each needle 33 and the use of the pressure plate 30 provide the advantage of a simple assembly of the needle carrier 23, and also offer the possibility of using relatively thin, needles, which is advantageous for applying a relatively small or fine-grained symbol and also for easy penetration of the needle into the object.

15 20 25 30 35 8 602 835

Claims (13)

A marking device comprising: - a needle carrier (23) with a collection of hollow needles (33) arranged in matrix form, which are movable in the longitudinal direction between an active and an inoperative position and each have an inlet and an outlet opening - an exchangeable reservoir (32) with contrast liquid which - if the respective needles (33) assume the active position, communicates via the inlet openings (35c) with the 10 cavities in these needles (33), - an exchangeable selection element ( 18) which, depending on the symbol to be applied, can be coupled to a number of needles (33) of the collection, - an operating member (1) which interacts with the needle carrier (23)> the selection element (18) and the reservoir (32) and comprising pressure means of which - first pressure means (12) when energized by the selection element (18) move said number of needles (33) to the active position and press with the free ends 20 into the object to be marked and - t two pressure means (32a) exert pressure on the liquid in the reservoir (32) and press the liquid through the cavities through the outlet openings of said number of needles (33) into the object, characterized in that - the needle carrier (23) fluid chamber (31) communicating with the reservoir (32), - the inlet openings (35c) of the needles (33) are closed in the inoperative position with respect to the fluid chamber 30 (31), while the means by means of the selection element (18) moving said number of needles (33) to the operating position, the inlet openings (35c) of these needles (33) are opened relative to the liquid chamber (31). The marking device according to claim 1, wherein the first pressure means comprise a pressure element (12) co-acting with the needle carrier (23) for moving said number of needles (33) to the operating position by means of the selection element (18) and in the active position. pressing the object, characterized in that the needle carrier (23) is movable with the needles (33) in the longitudinal direction of the needles (33) with respect to the pressure element (12) between a first 5 and a second position, as a result of which movement a coupling or a decoupling occurs between end parts (34) of said number of needles (33) and the selection element (18). The marking device according to claim 2, wherein the needle carrier (23) has a base plate (26) with openings (26a) through which the free ends of the needles (33) are movable, characterized in that upon actuation of the pressure element ( 12) the needle carrier (23) moves from the first to the second position with respect to the pressure element (12) against spring force, after the foot plate (26) has been pressed against the object, and that the needle carrier (23) has a pressure plate (30) which, after coupling of needles (33) and selection element (18), is pressed by said number of needles (33) during movement to the active position against resilience in the direction of the foot plate (26). Marking device according to Claim 3, characterized in that the pressure plate (30) moves away from the foot plate (26) under resilience after the actuation of the pressure element (12) is resilient, thereby moving said number of needles (33) together. to the ineffective position. Marking device according to claim 4, characterized in that the pressure plate (30) presses the needles (33) in the inoperative position against a stop plate (22) of the needle carrier, the stop plate (22) in the needle carrier (23). positions first and second positions relative to the pressure element (12). Marking device according to claim 5, characterized in that each needle (33) has a solid end part (34), a hollow central part (35) provided with the inlet opening (35c) and a hollow needle part (36), provided with the outlet opening, the central part (35) of the other two parts being larger in diameter relative to 8602835 TT-5 18 and in the inoperative position of the needle (33) between the stop plate (22) and the pressure plate ( 30). Marking device according to claim 6, characterized in that the liquid chamber (31) is present in the needle carrier (23) between the pressure plate (30) and the stop plate (22), the needles (33) with the central part (35) extend through the liquid chamber (31) and are in the operative position with the inlet openings (35c) in the liquid chamber (31). Marking device as claimed in any of the claims 2-7, wherein the actuating member (1) comprises an actuating lever (4), characterized in that the lever (4) carries a hinged catch (9) near one end which, with the lever (4) is part of the first pressing means, which catch (9) exerts a force on the pressing element (12) when energized from an active position during a joint pivoting with. the lever (4) pivots to an inoperative position and pivots back to the operative position in an initial position of the lever (4) under spring force. Marking device according to claim 8, characterized in that the operating member (1) is provided with third pressure means, comprising a pumping device (46), which is actuated during pivoting of the lever (4) and exerts pressure on a piston (32a ) contained in the reservoir (32), which piston forms part of the second pressure means and keeps the liquid in the reservoir (32) and in the liquid chamber (31) under constant pressure. Marking device according to claim 9, characterized in that the reservoir (32) is designed as an elongated cartridge, which is positioned by means of a compression spring (44) in the actuating member (1) and Oc near a first end via a non-return valve. is connected to the pumping device (46) and near a second end via a non-return valve to the liquid chamber (31). Operator (1) usable in the brand 8602835 TT-3 19 direction according to claim 1. 12. Interchangeable reservoir (32 \ / usable in the marking device according to claim 1. Interchangeable selection element (18) for use in the marking device according to claim 1. 10 15 20 25 30 35 8602835