EP0593851A1 - Reservoir for filling a fountain pen with ink, using a piston, or, for writing implements with reservoir and feedbar - Google Patents

Abstract

In a reserve bottle for refilling ink into piston-type fountain pens or writing instruments equipped with an ink tank and an ink guide system, a refill container (10) having an appendage (13) with a substantially cylindrical docking section for the fluid-tight reception of a connecting piece on a refillable container of writing liquid, especially for receiving an end section of a piston-type fountain pen (14), or a refillable ink cartridge (15), facing towards the pen, and being closeable by means of a lid part (12) via a screw, plug or clip device, the docking section (13) additionally has a sealing collar for engaging into the neck of the refill container (10), which consists of soft, resilient plastic. <IMAGE>

Description

The invention relates to a reserve bottle for an ink refill of piston fountain pens or writing implements equipped with an ink tank and an ink guide system.

Containers for fountain pen ink are usually shaped so that a substantially bulbous base section merges into a narrower collar section with an external thread on the upper side. A closure cover can be screwed onto the collar section, which receives a sealing washer on the inside, which is pressed against the end face of the collar section in a fluid-tight manner when the screw cover is put on.

In addition to lying glass containers with an ink removal opening provided on the side, standing plastic containers are also known. However, due to their dimensions, containers of this type are not carried by students, since they cannot be accommodated in school cases and problems could arise when carrying them in the satchel, particularly if they are glass containers. In addition, a student does not need such large amounts of writing fluid (ink) for the daily needs as these are made available by the containers.

Even if more and more writing implements or fountain pens with ink cartridges have prevailed recently, it should be noted that fountain pens of high quality in most cases are designed as so-called piston fountain pens, that is to say inside have a generally cylindrical volume of liquid that can be refilled by an externally actuated piston. This volume can either be integrated into the housing of the fountain pen or be formed by a piston cartridge, a so-called converter, which is inserted into the fountain pen as a unit which can be handled separately. In both cases, the ink supply volume is filled by moving the piston to the foremost stop so that the internal volume of the ink supply container delimited by the piston assumes a minimum value. A connection to the environment is established via the pen or the front opening of the refillable cartridge. For refilling, the pen or the front end of the piston cartridge is immersed or immersed in the inkwell, so that writing liquid or ink is sucked in by moving the piston back and the ink reservoir is filled.

Apart from the fact that this refilling process with piston fountain pens is somewhat more time-consuming than with the cartridge fountain pens anyway due to the separate handling of the ink fountain, the further problem arises that when refilling the ink one basically gets dirty on the hands. Because when refilling piston fountain pens, the latter must always be immersed in the ink beyond the lower edge of the grip, so that the outer surface of the fountain pen is often wetted by the ink and thus contaminated well into the recessed grip. Blue or black ink is difficult to perceive on the often darkened outer surfaces of the fountain pen, so that the fountain pen must be washed and dried thoroughly before being used again.

Another problem arises from the fact that when filling fountain pens, care must be taken to ensure that the entire nib is surrounded by ink. This means that ink bottles or ink glasses are difficult to empty. If the ink level has dropped so far that when the nib is immersed, the latter is no longer entirely submerged about 1 mm below the level of the writing fluid, the fountain pen draws "air" when it is filled. The ink reservoir in the fountain pen can therefore no longer be completely filled with ink, so that the refilling process must be carried out at ever shorter intervals. In addition, the air trapped in the ink reservoir acts when the fountain pen is thermally stressed, e.g. if the fountain pen is held in the hand for a long time or is exposed to the sun, it has a negative effect that the increasing volume of air pushes ink out of the pen in excess.

Even with fountain pens with refillable cartridges, the problems described above cannot be eliminated, especially since in this case the likelihood of getting dirty on the hands when refilling ink is greater because the cartridge can only be stabilized when immersed in that one with your fingers on the top of the ink glass neck.

Attempts have already been made to alleviate the above-mentioned problems by giving the ink tanks or glasses a special shape, so that in addition to the actual main volume, a secondary volume is created separated by a partition. This gives the ink glass a very complex shape, though the manufacture is difficult and the cost of the ink glass increases.

The invention has for its object, in particular the students a small, handy, easily u.a. Reserve bottle for writing fluid that can be carried in school cases with a content for about two to three or even more piston holder fillings with an attachment, with which it is possible to completely empty the reserve bottle except for an insignificant remaining amount and at the same time handle the reserve bottle on the one hand and the fountain pen or the refillable cartridge, on the other hand, so that the risk of getting dirty when refilled with ink is effectively contained. Furthermore, the tightness of the reserve bottle is to be increased both in the state closed by a lid part or a closure cap and in the docked state on a writing instrument and an education is to be created with which the filling of writing implements not provided with a suction piston with an ink tank and ink guidance system as well as Ink cartridges arranged in the writing instrument are possible.

This object is achieved by a reserve bottle with the features of claim 1.

According to the invention, the refill container consists of soft, elastic plastic, preferably an LDPE (Low Density Polyethylene). On the one hand, this plastic is unbreakable and, on the other hand, it offers the possibility, after docking a writing instrument that is not provided with a suction mechanism, by compressing the ink into the ink tank via the ink guide system To press disposable writing instrument, with which the filling of appropriately equipped disposable writing instruments is now possible. Furthermore, due to the flexible design of the refill container, a suction effect can be generated by connecting a reduced-volume, compressed refill container with the docking system to an ink supply system of a writing instrument and returning it to its original shape by releasing the refill container and thereby exerting a suction effect due to the increase in internal volume can be used in particular for cleaning emptying of the ink guidance system. The particular advantage is that empty ink cartridges arranged in the fountain pen can remain in the fountain pen and can be refilled with ink.

Developments of the invention are described in the subclaims.

For example, the attachment will preferably be locked or welded to the refill bottle, depending on whether the attachment should be detachably connected to the refill bottle or, if necessary, as a one-piece part, e.g. can be produced by injection molding. Such a connection also ensures a much better seal between the attachment and the refill container instead of a screw connection between these parts.

A further improvement of the seal is achieved by using ring beads or ring seals as locking means with a corresponding constriction on the opposite side, i.e. created between the attachment and / or the refill container neck.

In order to improve the tightness of the cover part with respect to the attachment, the cover part has a central pin, which lies in the closed state of the reserve bottle with its jacket side sealingly against the inside of the top jacket. If the attachment has a collar which only leaves a central central opening and which lies sealingly against the bottom surface of the central pin, a large-area seal can be created at several points. With a view to improving the tightness, the cover part with its inner casing will preferably lie sealingly against the outer casing of the attachment at at least one point, preferably at two points. These points can be formed on the upper neck of the docking section on the one hand and in the region of the attachment of the attachment to the refill container in the form of an annular bulge turned outwards on the other hand. A further improvement in the sealing results if the docking section has a conical cylinder jacket which, after the cover part has been slipped on, bears on both sides in a sealing manner, possibly with surface pressure.

According to a further embodiment of the invention, preferably in the region of the pin, the cover part can include an absorbent wick which projects outwards from the cover part. This wick is used to wipe off any remaining ink or other dirt.

If the wick lies in the cavity of the central pin which is accessible from the outside, the cover part can preferably be detachably connected to an upper closure cap which shields the wick. This ensures that the user of the writing instrument can no longer come into contact with the liquid-soaked wick after the closure cap has been put on. Preferably, the cover part and the closure cap will be screwed together. To ensure that the wick can evaporate absorbed liquid, the cap has a bore open to the outside, which ensures that the wick dries in a short time until the next use.

According to a further embodiment of the invention, the attachment and / or the docking section is designed to receive a writing tip of a disposable device with an ink tank and ink-guiding system with a temperature and pressure compensation system; the connection point between the writing tip and the docking section, which is adapted in terms of geometry, is preferably liquid-leak-proof, that is to say fluid-tight. In this case, writing liquid can be pressed into the ink tank by compressing the filling bottle. By relaxing the bottle, the previously generated overpressure in the writing instrument can be compensated for by dodging it into the bottle. At the same time, by sucking the air back into the refill bottle, the ink supply and compensation system can be automatically emptied.

The invention further includes an embodiment of the reserve bottle in such a way that it has small dimensions and is intended for a content of approximately two to three piston holder fillings. Due to its dimensions, the reserve bottle is handy, can be easily carried in student cases by students and if the reserve bottle is made of plastic, it is unbreakable. It can therefore be carried easily since the reserve bottle does not take up more space than three ink cartridges due to its dimensions. The shape of the reserve bottle can be any; it is designed as a molded part or as a hollow blown body and ends in the spout with a docking lock. The reserve bottle is closed with a two-piece lid. The inner part of the lid to be screwed onto the reserve bottle represents an open pipette tip. With this pipette tip and simply squeezing and releasing the pressure on the reserve bottle, it can be refilled from a larger ink glass at any time. The protective cap to be screwed over this pipette tip seals the opening against ink leakage after this refilling process.

Furthermore, an attachment is created for the reserve bottle, to which the piston fountain pen or the piston cartridge can be docked in a fluid-tight manner, wherein a latching device or snap device is advantageously provided in order to position the fountain pen or the cartridge to be refilled with respect to the attachment or the cartridge in a precise position Ensure reserve bottle. If the piston is then moved forward and air is accordingly displaced from the ink reservoir into the reserve bottle, a slight overpressure is generated in the reserve bottle. Due to the fluid-tight seal between the fountain pen and the reserve bottle, the latter can only be brought upside down, ie turned over, so that the ink or residual ink in the reserve bottle runs into an area that immediately surrounds the fountain pen or the mouth of the refillable cartridge that even a small amount of ink in the reserve bottle is sufficient to surround or wash around the entire nib of the fountain pen. By turning back the plunger, the ink is sucked into the fountain pen or the refillable cartridge, free of air or bubbles, supported by the slight excess pressure. whereupon the reserve bottle can be turned back to the normal position. However, there is also the possibility of attaching the attachment to the end of the piston fountain pen, leaving the attachment attached and immersing it together with the fountain pen in the reserve bottle in order to carry out a filling.

During the entire filling process, only the end face adjacent to the spring or the cartridge inlet opening is wetted with ink due to the fluid-tight and thus form-fitting enclosure of the fountain pen or the ink cartridge. In this area, the ink can be removed, for example wiped off, with significantly less effort. Accordingly, the fountain pen or the refillable cartridge can be handled without problems after refilling, without running the risk of getting dirty on the hands or fingers with ink when the fountain pen or the cartridge is touched again. The attachment is also suitable as a retrofit part for such writing fluid containers.

Advantageous developments of the invention are the subject of the dependent claims.

A minimization of the residual ink volume surrounding the nib of the fountain pen in the overhead position of the reserve bottle results from the further development of claim 8. This minimum volume is easiest to provide if, according to claim 12, the docking section is extended to the collar section by a radial retracting shoulder .

The essay is according to an advantageous development Can be fitted with adapters to take account of the different geometries of the fountain pen tips and refillable cartridges. The docking section can either itself be designed to be radially elastic, at least in the area of the sealing surfaces to the fountain pen, or it can be equipped with elastic inserts.

Further advantageous embodiments of the invention are the subject of the dependent claims.

• Fig. 1 eine Seitenansicht einer Reserveflasche,
• Fig. 2 dieselbe Seitenansicht der Reserveflasche nach Fig. 1 mit abgenommenem Deckelteil,
• Fig. 3 eine Seitenansicht der Reserveflasche nach Fig.1 und 2 mit angedocktem Kolbenfüllhalter,
• Fig. 4 dieselbe Ansicht wie in Fig.3 mit um 180^o umgestürzten Teilen,
• Fig. 5 die Seitenansicht einer Reserveflasche mit angedocktem Schreibgerät mit Titentank und Tintenleitsystem mit Temperatur- und Druckausgleichssystem,
• Fig. 6 eine teilweise geschnittene Seitenansicht einer weiteren Ausführungsform der erfindungsgemäßen Reserveflasche,
• Fig. 7 in einer Seitenansicht eine Reserveflasche,
• Fig. 8 in einer Seitenansicht eine weitere Ausführungsform einer Reserveflasche mit einem zweiteiligen Deckelverschluß,
• Fig. 9 in einer Seitenansicht eine Reserveflasche mit eingeführtem Füllfederhalter,
• Fig.10 einen senkrechten Schnitt des oberen Bereichs der Reserveflasche mit aufgeschraubtem Aufsatz gemäß einer ersten Ausführungsform,
• Fig.11 einen senkrechten Schnitt des oberen Bereichs der Reserveflasche mit zweiteiligem Verschlußdeckel und einer tüllenartigen Endausgestaltung,
• Fig.12 in etwas verkleinertem Maßstab einen senkrechten Schnitt des oberen Reserveflaschenabschnittes mit angedocktem Füllfederhalter, wobei sich die Reserveflasche in Überkopflage befindet,
• Fig.13 einen Halbschnitt des oberen Bereichs eines Aufsatzes gemäß einer zweiten Ausführungsform mit abgenommenem Verschlußdeckel und
• Fig.14 einen Halbschnitt des oberen Bereichs einer Reserveflasche mit aufgeschraubtem Aufsatz gemäß einer dritten Ausführungsform.

Embodiments of the invention are explained below with reference to the drawings. Show it

• 1 is a side view of a reserve bottle,
• 2 shows the same side view of the reserve bottle according to FIG. 1 with the cover part removed,
• 3 shows a side view of the reserve bottle according to FIGS. 1 and 2 with the piston fountain pen docked,
• Fig. 4 is the same view as in Figure 3 by 180 ^o overturned portions,
• 5 is a side view of a reserve bottle with a docked writing instrument with a titanium tank and an ink guide system with a temperature and pressure compensation system.
• 6 is a partially sectioned side view of a further embodiment of the reserve bottle according to the invention,
• 7 is a side view of a reserve bottle,
• 8 is a side view of a further embodiment of a reserve bottle with a two-part lid closure,
• 9 is a side view of a reserve bottle with an inserted fountain pen,
• 10 shows a vertical section of the upper region of the reserve bottle with a screwed-on attachment according to a first embodiment,
• 11 shows a vertical section of the upper area of the reserve bottle with a two-part closure cap and a spout-like end configuration,
• 12 shows a somewhat reduced scale a vertical section of the upper reserve bottle section with the fountain pen docked, the reserve bottle being in the upside-down position,
• 13 shows a half section of the upper area of an attachment according to a second embodiment with the closure cover removed and
• 14 shows a half section of the upper region of a reserve bottle with a screwed-on attachment according to a third embodiment.

The reserve bottle shown in FIGS. 1 to 5 consists of a refill container 10 made of soft, elastic plastic, preferably LDPE. The refill bottle 10 has dimensions which preferably have a content of two to three piston holder fillings or other writing instrument fillings ensure that the reserve bottles can be easily accommodated in school cases. The refill bottle has an external thread 11 on its neck piece, onto which a correspondingly designed internal thread of a cover part 12 can be screwed. 2 and 3, the lid part 12 can overlap both the docking section and / or the attachment as an adapter piece and, if appropriate, parts of a neck piece of the refill bottle 10 in the closed state. The cover part 12 is also made of plastic, which, however, does not necessarily have to be flexible. 1 to 5, the bulbous part of the refill bottle goes over a shoulder into a neck which opens into a docking section 13, the inner jacket contour of which is designed such that a piston filler introduced according to FIG the risk of ink leakage can be rotated 180 ^o , as shown in Fig.4. The docking section 13 can be designed both on the end section of a piston fountain pen having the nib and on the end section of a refillable ink cartridge or also of another type of writing instrument according to FIG. The docking section 13 can have an upper collar which corresponds to a fluid-tight closure of the cover part 12 with an annular web of this cover part such that the annular web is placed against the upper collar of the docking section in a fluid-tight manner in the closed state. The docking section can be designed to be adaptable to all piston holder diameters, for example by choosing a resilient-elastic material. If the docking section 13 is not formed in one piece with the reserve bottle 10, it can be connected via an external or internal thread with a corresponding corresponding threaded part of the Refill container or its neck are releasably connected. Here too, additional sealing lips and collar pieces, which abut one another in the closed state, can ensure increased tightness. The docking section 13 can also have on its inner jacket an annular bead made of rubber-elastic material, against which the piston filler 14 is pressed in the docked state. This can be done in such a way that an axial pressure is necessary for this or in that the annular bead radially tightly encloses the piston filler end. The ink tank or an ink cartridge 15 of the piston filler can be filled in the position shown in FIG. 3 or in the overhead position according to FIG. 4, the piston 16 being displaced as far as possible in the direction of the nib before being filled, and then in the opposite direction retract the plunger, drawing in ink. Filling in the overhead position according to FIG. 4 has the advantage that the spring is still under liquid even when the reserve container 10 is partially empty. Filling upside down, however, requires a fluid-tight connection of the filler to the docking section.

While the filling of fountain pens is no problem due to the filling mechanism there, all writing implements that do not have a refilling mechanism had to be thrown away. This is a major environmental burden, which is all the more serious since most devices are still functional if they could only be refilled. This would allow the life of a writing tip to be fully utilized. In the docking section 13 according to the invention, which can create a fluid-tight connection to the writing instrument 18, it is possible with an elastic refill container 10 by pressing it together To press writing fluid into the tank of the writing instrument 18. If you relax the bottle after pressing the ink into the tank via the ink guide system, the previously generated excess pressure in the writing instrument is compensated for back into the bottle, which means that the air is sucked back into the refill bottle, so that the ink guide and compensation system is automatically emptied . What is essential here is the leakage protection, which on the one hand prevents writing liquid from escaping if the bottle accidentally falls over, and on the other hand that writing liquid can flow in after the filling liquid has been released during the filling process. This ensures that the compensation system of the ink guide is not automatically refilled until the pen 18 is undocked. The ink tank of the writing instrument 18 can optionally be filled by repeated pressing, after which the writing tip 19 is ready for use again as long as its quality permits. Rollerball pens, fine linen, fiber pens, markers and comparable devices can be considered as writing devices 18. Refilling only requires that the devices have an ink tank for writing fluid and an ink supply system with a temperature and pressure compensation system. Pad stores cannot be refilled. The filling process according to Fig. 5 takes place as follows:
First, the writing instrument 18 is docked on the writing side to the docking side 13 of the refill bottle 10. The device is then brought into a position in which the writing tip 19 points upwards and the reserve bottle 10 sits vertically thereon. By pressing the reserve bottle 10 several times, the writing fluid contained therein is in the tank of the writing instrument 18 pumped. Since these writing instruments 18 generally have transparent tanks, it can be easily determined when the writing instrument is filled. After refilling, the writing instrument with the refill bottle is turned over again so that the writing tip points downwards again and the writing instrument can be undocked from the refill bottle. If necessary, the writing tip 19 must also be cleaned of writing fluid before the writing instrument is used again. The reserve bottle 10 is closed again by screwing on the cover part 12.

A further embodiment of the reserve bottle according to the invention is shown in FIG. The reserve bottle 20 made of plastic there contains writing fluid 21 in a known manner. The reserve bottle 20 passes from a bulbous part over a shoulder into a neck 101 with a smaller diameter. This neck has a thread 102 on its outer jacket which can be closed with the corresponding thread 121 of a cover part which can be screwed on there. At its upper end, the neck has an inwardly projecting annular bead 103, which lies sealingly against an attachment 23 which acts as an adapter. This attachment 23 is of essentially tubular design and projects with its lower end into the neck 101, the outer jacket of this attachment 23 lying closely against the neck 101. In this case, the annular bead 103 can optionally lie in a correspondingly designed groove of the attachment 23. The attachment has a further, outwardly turned ring 131, which rests above the end face of the neck 101 and effects a further seal. The attachment 23 can be connected to the refill container 20 by means of a press connection or a snap connection; however, it can also be formed in one piece with it be. The attachment 23 also has a substantially closed, inwardly directed collar 132, which has only a central opening 24, but which is sealed in the closed state. The attachment 23 can have a conically tapering container wall at its free end. It can also have further cams, ring bodies, flanges or extended S-shapes, as indicated at reference number 133, which preferably create a further sealing point.

In contrast to the usual, mostly cup-shaped closure part, the cover part 22 according to FIG. 6 has a central pin 122 which, in the closed state of the reserve bottle, lies sealingly with its shell side on the inside of the cap shell. In particular, this central pin 122 has a closed bottom 123 which both lies tightly against the collar 132 and closes the bottom opening 24. The central pin 122 and the cover part 22 thus envelop the attachment 23 in its inner and outer area above the neck 101. The central pin 122 creates an externally accessible relaxation room in which an absorbent wick 25 is located, which is on its free side from the Center pin 122 protrudes. This wick is made of absorbent material for cleaning writing utensils or the like.

The outer jacket 22 'of the lid part 22 and the wick 25 are closed off at the end remote from the reserve bottle 20 by a closure cap 26 which has a bore 27 through which air can enter the interior. The closure cap 26 is either screwed to the attachment 22 or connected via a cam-ring-bead-groove connection 28.

The reserve bottle according to FIG. 6 has an adapter with the attachment 23, which is latched or welded to the refill container 20, a fluid-tight connection being created. Furthermore, the attachment 23 has a leakage protection (at the points designated 132 and 133), which reliably prevents the writing fluid from leaking if the bottle accidentally falls over. The leakage protection is designed so that the attachment 23 to the reserve bottle 20 forms a closure in the form of a bottom, which can be opened through the small bore 121. The bore 121 is so large that, on the one hand, no writing liquid can leak out, but on the other hand the filling process of the writing instrument and the refilling of the bottle are possible. The advantages of the attachment are the leakage protection and the possibility of being able to exchange the attachment on the reserve bottle 20 by releasing the snap connection and snapping a new connection in order to create different docking options for different writing instruments. The lid part, which accommodates the top 23 and the neck 101 and simultaneously seals it, is designed so that it seals the opening of the leakage protection in the top 23 and also makes the top 23 generally tight, so that an unbreakable and leak-proof unit with the reserve bottle 20 is formed. The leakage protection is sealed in particular by the central pin 121 as part of the cover part 22. When the cover part is screwed on, the central pin 122 closes the opening in the bore 24, so that a leakage protection is formed. At the same time, the upper edge of the attachment 22 is clamped by the tapered bore of the cover part and the tapered pin which seals the leakage protection and thus also sealed.

The reserve bottle is refilled from an ink glass as follows: After unscrewing the cover part, the attachment is immersed in the ink glass and the refill bottle is pressed together. Then the refill container - the refill bottle - is released and the bottle is allowed to relax. The bottle can be removed from the ink glass with an adapter and the soiled adapter can be cleaned of the writing fluid. Finally the cap is screwed on.

The refilling process for a piston writing instrument or another writing instrument with a refillable ink container takes place as follows: After unscrewing the cap, the writing instrument is pressed into the attachment until it locks in the area of the ring seal 133. The writing instrument with the refilled bottle is now held vertically upwards before the piston of the writing instrument is screwed forward, whereby the air in the writing instrument is pressed into the reserve bottle 20 and an excess pressure is generated. The piston is then turned back, the ink being sucked out of the reserve bottle 20 via the leakage protection into the device via the ink guide system of the writing device. In this state, the tank of the writing instrument and the ink guide and pressure compensation system of the writing instrument are now filled. However, the latter still has to be emptied to ensure that writing fluid cannot leak in the event of changes in temperature or air pressure. This emptying can be done in two ways:
Either after unscrewing the plunger on the writing instrument, in which the filling process has taken place, the reserve bottle 20 is pressed twice in the same position as when filling, with small amounts still being added Writing fluid must be pressed into the device. When the reserve bottle 20 is relaxed, however, the air is drawn out of the writing instrument through the ink guide and compensation system, the writing liquid in the system being removed with the air flowing through and being withdrawn in the reserve bottle 20. As a result, the compensation system is emptied, the writing instrument is ready for writing and resilient. Alternatively, after unscrewing the plunger on the writing instrument, during which the filling process has taken place at the same time, the writing instrument with the docked filling bottle and the adapter can be turned over so that the writing pen points vertically downwards. If the swivel foot that moves the piston is turned by one turn to the right, two to three drops of writing fluid fall off. Then the piston is turned back by turning it to the left, whereby air is drawn from the refill bottle through the compensation system and the remaining writing fluid is removed. This also empties the compensation system, so that the writing instrument is ready for writing and resilient. Any ink or writing fluid residues can be removed with the wick 25, for which purpose the closure flap 26 is removed beforehand. Opening 27 ensures that the wick dries out again gradually.

The reserve bottle shown in FIGS. 7 and 8 and designated by 300 preferably consists of plastics, whereby resilient-elastic plastics can also be used to manufacture the reserve bottle. However, other suitable materials can also be used. This reserve bottle 300 has small dimensions so that it can be carried by students in student cases, for example, without the reserve bottle having a lot of space for accommodation. Preferably, the dimensions of the reserve bottle 300 are such that the reserve bottle contains approximately two to three piston holder fillings, which corresponds to approximately three cm³. However, it is also possible to give the reserve bottle 300 larger dimensions so that it has a content that corresponds to more than three piston holder fillings.

The reserve bottle 300 is provided with a screw cap 301, which is formed in one piece in the embodiment shown in FIG. 7 and in two parts in the embodiment shown in FIG. The two cover parts are designated 301a, 301b.

In FIG. 10, 210 denotes an attachment in the form of a plastic screw cap, which is screwed onto a neck 212 of the reserve bottle 300. Neck 212 represents the tapered end of the otherwise bulbous ink container. 216 denotes an external thread of the reserve bottle, which is functionally engaged with an internal thread 218 of a collar section 220 (FIG. 11). With 222, groove-shaped depressions in the outer peripheral surface of the collar section are indicated, which form lugs to make it easier to screw the cap 210 on and off.

Via a radial constriction shoulder 224, the cylindrical collar section 220 merges into a likewise cylindrical docking section for sealed, form-fitting accommodation of a connection piece (not shown in FIG. 10) to a refillable writing fluid or ink volume. This connector is, for example 10 is formed by an end section of a plunger fountain pen facing the nib or by the end section of a refillable ink cartridge which, according to FIG. 10, can be inserted into the docking section 226 from above after a screw cap 228 has been removed, which forms the closure cap 301 of the reserve bottle 300.

For this purpose, the docking section 226 has an external thread 230 on the outside and the screw cap or the screw cap 228 has an internal thread 232, an annular web 236 projecting from the end wall 234 for the fluid-tight closure of the attachment 210, said ring web protruding against the upper collar 238 of the docking section 226 is applied in a fluid-tight manner when the screw cap 228 is screwed on. The docking section 226 is adaptable to all fountain pen diameters; for this purpose, the docking section can consist of resilient, elastic material, such as plastic.

240 denotes a sealing lip area which, when the connector for the refillable writing fluid volume, that is, for the fountain pen tip, fits snugly against the outer circumference of the connector, preferably with a latching or at least a snap connection between the docking section 226 and the fountain pen or the one to be refilled Cartridge is done. For this reason, a sealing lip ring bead 241 is used. The sealing lip area 240 or the ring bead 241 is therefore preferably adapted to the geometry of the end area of the fountain pen tip facing the spring in such a way that the sealing lips snap-fit at a predetermined point on the fountain pen or the refillable cartridge kick with a corresponding outer surface area of the fountain pen or the cartridge, so that the fountain pen or the cartridge, after docking, is positioned radially on the one hand with respect to the attachment 210 and, on the other hand, is also precisely positioned in the axial direction. It is advantageous if the docking section 226 is at least partially radially elastic, which can be controlled by a suitable choice of the material for the attachment 210.

The screw connection of the attachment 210 to the neck 212 of the reserve bottle 300 is fluid-tight, for which purpose an annular sealing web 242 is integrally formed on the underside of the radial constriction 224 in the exemplary embodiment shown, as shown in FIG. 10, which in increasing surface contact with the attachment of the attachment the neck 212 of the reserve bottle 300. Thus, the inner volume of the reserve bottle 300 is sealed gas and liquid-tight after the fountain pen or the refillable cartridge has been docked on. In this state, the entirety of the reserve bottle 300 with the attachment 210 and the docked fountain pen can be brought upside down (FIG. 12). However, filling in the position shown in FIG. 9 is also possible.

The ink contained in the reserve bottle 300 or the residual ink still contained accordingly runs into the neck 212 of the reserve bottle 300 and accumulates there, even if only a small residual ink volume remains in the reserve bottle, up to a level P which is high enough so that the entire nib 244 is flushed with ink and submerged far enough. Due to the reduced inner diameter of the docking section 226 compared to the neck 212 and the provision of the sealing web 242, the filling height HF becomes even in this case still held high enough that only the bottom of the reserve bottle 300 should be wetted with ink (FIG. 12).

The preferably radially elastic design of the docking section 226 ensures that the inner wall 246 of the docking section clings to the outer surface 248 of the edge region of the fountain pen tip in a fluid-tight manner, with the sealing lips 241 being able to position the fountain pen axially with respect to the docking section 226 by the lip area behind the pointed section, ie behind the outer surface, 248 snaps. In the upside-down position of the ink glass 214 according to FIG. 12, only the end face 250 facing the pen 244 is wetted with ink.

Either before turning the ink glass with the fountain pen docked or in the position according to FIG. 12, by actuating the filling piston 252, which is indicated by a dash-dotted line in this figure, the latter is brought into the foremost position, causing air from the ink reservoir 254 via a channel 256 and the Nib 244 outwards, ie is pushed into the reserve bottle 300. Since the docking section 226, in cooperation with the outer surface 248 of the fountain pen, closes the inner volume of the reserve bottle 300 in a fluid-tight and thus gas-tight manner, an internal pressure PI builds up in the reserve bottle 300 that is slightly greater than the ambient pressure. By turning back the plunger 252, the ink is sucked into the ink reservoir 254 without bubbles or air due to the constant rinsing of the nib 244 and supported by the slightly raised internal pressure PI.

Subsequently, the entirety of the reserve bottle 300 and the docked fountain pen is turned over again so that the fountain pen can be removed from the docking section 226 or released or clicked out (FIG. 9). Since only the end face 250 comes into contact with the ink during the filling process, the fountain pen can be cleaned very easily by merely dabbing the end face 250 or rubbing it off with a dry cloth. In any case, it is impossible for ink residues to remain in the grip area of the fountain pen.

After using the reserve bottle 300, it can be sealed airtight by placing the screw cap 228 or 301a on the docking section 226, so that the ink in the reserve bottle does not age if it is not in use for a long time (FIGS. 11 and 12). .

A further embodiment of the attachment for the reserve bottle 300 is shown in FIG. In this illustration, components which are comparable to those of the embodiment according to FIGS. 10 and 12 have been provided with reference numerals, which are preceded by a “4”.

The embodiment according to FIG. 13 does not differ in the area of the docking section 426 or in the area of the upper collar 438 from the previously described embodiment. An annular bead 441 is again provided in the sealing lip area 440 in order to form a sealing snap-in or snap connection with a connector of a piston fountain pen to be docked. The peculiarity of the embodiment according to FIG. 13 is that the docking section 426 receives an adapter 460, which via the annular bead 441 can be positioned and sealed in position. The adapter 460 essentially has the shape of a hollow cylinder, the diameter DI of which is slightly larger than the outer diameter DA of a refillable cartridge denoted by 462, in which a filling piston 464 is also movably received. The inner surface of the adapter 460 has a sealing bead 466, which is made of elastic material and, when the refillable cartridge 462 is inserted, lies snugly and thus fluid-tightly against the outer wall of the cartridge 462. The adapter 460 can be adapted to different diameters of the fountain pen.

Deviating from the illustration according to FIG. 13, the design of the adapter 460 can also be such that when the refillable cartridge 462 is inserted, an axial stroke is provided for the cartridge, so that the cartridge is prevented from being either too little or too far in the adapter 460 is inserted. When the refillable ink cartridge is attached or docked - as has already been described above - the whole of the reserve bottle 300 and the cartridge 462 is brought into an upside-down position.

It can be seen from the illustration according to FIG. 13 that the design of the attachment makes it possible to empty the reserve bottle 300 to a residual volume V * which surrounds the tip of the refillable ink cartridge in the region of the adapter 460.

The adapter is preferably designed in such a way that it can remain in the docking section in order to close the reserve bottle or the cap with the screw cap. According to a further advantageous embodiment, provision can be made be that the adapter 460 is provided on the outside end face to facilitate the replacement and replacement of the adapter 460.

Finally, another embodiment of the attachment for reserve bottles will be described with reference to FIG. 14, which differs from the previously described embodiments in that the axial overall height is reduced. In this embodiment, those components which are comparable to the elements of the embodiment according to FIGS. 10 and 12 are again provided with the same reference numerals, but preceded by a “5”.

The collar section 520 of the attachment 510 is screwed onto the neck 512 of the reserve bottle. In a departure from the previously described exemplary embodiments, the docking section 526 is arranged radially within the collar section 520 and is connected in one piece to the latter via a radial web 570. An outer circumferential surface 572 of the docking section 526 tapers inwards conically at an angle of ALPHA, so that, when the collar section 520 is screwed on, an increasingly intimate sealing contact is created between the docking section 526 and the reserve bottle neck 512. The docking section 526 therefore also functions as a sealing collar in the embodiment according to FIG. 14. An annular bead 540 formed on the inside of the docking section 526 makes the docking section adaptable to different fountain pen diameters.

In addition, the radial dimension MR can be influenced by more or less firmly screwing on the attachment 510, as a result of which a universal Applicability of the attachment 510 for a wide variety of designs of connecting pieces results either in the fountain pen or refillable cartridges. In the upper area of the docking section 526, an internal thread 574 is provided, into which a locking cover 528 can be screwed for an airtight closure of the reserve bottle with an attachment 510.

Of course, deviations from the previously described exemplary embodiments are possible without departing from the basic idea of the invention. For example, it is possible to finely adjust the radial inner width of the docking section with the aid of a clamping ring in order to adapt to different outer diameters of fountain pens. It is also possible to work with highly elastic docking sections, which are then expanded radially to a greater or lesser extent when fountain pen end sections of different thickness are inserted. The attachment is preferably made of plastic material, a transparent design of the plastic having the advantage that the ink level in the overhead position of the reserve bottle can be monitored in relation to the position of the pen.

In the embodiment shown in FIG. 11, the docking section 226 can simultaneously be an integral part of the reserve bottle 300. The docking section 226 is provided with an external thread 226c, onto which the cover part 301b can be screwed. In its end region 301b ', this cover part 301b ends in a grommet-shaped shape which is provided in the middle with an opening 301b''. The cover part 301b is provided with an external thread 302, onto which the cover part 301a can be screwed, which with an into the external thread 302 engaging internal thread is provided. The lid part 301b is then designed at its tip as an open pipette tip. With this pipette tip, it is possible to refill ink from a larger ink glass by simply squeezing and releasing the pressure on the reserve bottle 300. The cover part 301b is made of resilient plastic. However, there is also the possibility of screwing the docking section 226 onto the reserve bottle 300 if the latter is provided with an external thread (FIG. 10). In this embodiment, the upper opening of the docking section 226 can then be closed by the cover part 228 or 301a. The lid part 301b, which is designed with a pipette tip, can be stored and carried separately if a simple refilling of the reserve bottle 300 from an ink supply bottle becomes necessary.

The attachment 210, 410 or 510 can be closed by means of a one-part cover part 301 or by means of a two-part cover part 301a, 301b, the inner cover part 301b being held on the outer wall surface of the attachment 210, 410 or 510 by means of a screw, plug or clip device and at its free end 301b 'is designed as an open 301b' 'pipette tip. The inner cover part 301b can be covered by an attachable second cover part 301a, the cover part 301a being releasably held on the outer wall surface of the inner cover part 301b by means of a screw, plug or clip connection.

Claims (35)

Reserve bottle for an ink refill of piston fountain pens or writing instruments equipped with an ink tank and an ink guide system, a refill container (10, 20) an attachment (13, 23) with an essentially cylindrical docking section (13) for fluid-tight connection of a connector to a refillable writing fluid volume, in particular for receiving an end section of a piston fountain pen (14) or a refillable ink cartridge facing the pen and can be closed by means of a cover part (12, 22) using a screw, plug or clip device, and the docking section (13, 23) also has a sealing collar for engaging in the neck of the refill container (10, 20), which consists of soft elastic plastic. Reserve bottle according to claim 1, characterized in that the plastic is an LDPE (Low Density Polyethylene). Reserve bottle according to claim 1 or 2, characterized in that the attachment (23) is locked or welded to the refill bottle (20). Reserve bottle according to claim 3, characterized in that the attachment (23) has / have at its lower end and / or the refill container neck (101) an annular bead or ring seal as a locking means with a corresponding constriction on the attachment and / or the refill container part. Reserve bottle according to one of Claims 1 to 4, characterized in that the cover part (22) has a central pin (122) which, when the reserve bottle is closed, lies with its jacket side in a sealing manner on the inside of the top jacket. Reserve bottle according to one of claims 1 to 5, characterized in that the lid part (22) lies with its inner jacket at least one point, preferably two places, sealingly against the outer jacket of the attachment (23). Reserve bottle according to one of Claims 1 to 6, characterized in that the attachment (23) has a collar (132) which only leaves a central central opening (24) and which lies sealingly against the bottom surface (123) of the central pin (122). Reserve bottle according to one of claims 1 to 7, characterized in that the docking section (13, 23) has a conical cylinder jacket which, after the cover part (12, 22) has been slipped on, bears sealingly on both sides of the cover part (12, 22). Reserve bottle according to one of claims 1 to 8, characterized in that the lid part preferably contains an absorbent wick (25) in the pin area which protrudes outwards from the lid part. Reserve bottle according to claim 9, characterized in that the cover part (22) is detachable with an upper closure cap (26) which shields the wick. Reserve bottle according to claim 9 or 10, characterized in that the lid part (12, 22) and the closure cap (26) are screwed together. Reserve bottle according to one of claims 9 to 11, characterized in that the closure cap (26) has a bore (27) which is open to the outside. Reserve bottle according to one of claims 1 to 12, characterized in that the attachment (22) and / or the docking section (13) is designed to receive a writing tip of a disposable device (18) with an ink tank and an ink guide system with a temperature and pressure compensation system. Reserve bottle according to claim 13, characterized in that the connection between the writing tip and the docking section (13) is leak-proof. Reserve bottle according to one of claims 1 to 14, characterized in that the reserve bottle (300) having the smallest dimensions has an attachment (210; 410; 510) with an essentially cylindrical docking section (126; 426; 526) for the fluid-tight reception of a connecting piece (148 ; 448) has a refillable writing fluid volume (154; 454), in particular for receiving an end section (148) of a piston fountain pen or a refillable ink cartridge (462) facing the writing nib (144). Reserve bottle according to one of claims 1 to 15, characterized characterized in that the bottle body of the reserve bottle (300) is dimensioned in such a way that a writing fluid holding volume is obtained from the contents of approximately two to three piston fountain pen fillings. Reserve bottle according to one of claims 1 to 16, characterized in that the attachment (210; 410; 510) can be closed by means of a one-piece lid part (301) or by means of a two-piece lid part (301a, 301b), the inner lid part (301b) being by means of a screw, plug or clip device is held on the outer wall surface of the attachment (210; 410; 510) and is formed at its free end (301b ') as an open (301b' ') pipette tip, and that the inner cover part (301b) can be covered by means of a second cover part (301a) which can be attached, the cover part (301a) being detachably held on the outer wall surface of the inner cover part (301b) by means of a screw, plug or clip connection. Reserve bottle according to one of claims 1 to 17, characterized in that the connecting piece (148; 448) in the docking section (126; 426; 526) can be locked relative to the docking section, preferably with axial positioning. Reserve bottle according to one of Claims 1 to 18, characterized in that the docking section (126; 426; 526) is designed such that the connecting piece can be snapped into the docking section. Reserve bottle according to one of claims 1 to 19, characterized in that the docking section (126; 526) is designed in such a way that the connecting piece (148) can be encompassed in a form-fitting manner with a sealing lip area (140, 141; 540, 341). Reserve bottle according to claim 20, characterized in that the sealing lip area (140; 540) is arranged such that it connects directly to an end face (150) of the connecting piece (148) when the connecting piece is inserted. Reserve bottle according to one of claims 1 to 21, characterized in that the docking section (126; 426; 526) for receiving the end section of a fountain pen has such a design that it preferably extends the spring (144) of the fountain pen over its entire length with a small lateral distance (AS) surrounds. Reserve bottle according to one of claims 1 to 22, characterized in that the docking section (126; 426; 526) is connected in one piece to the attachment (110; 410; 510) or is an integral part of the bottle body of the reserve bottle (300). Reserve bottle according to one of claims 1 to 23, characterized in that the docking section (426) can be equipped with at least one interchangeable adapter (460) for different geometries of the connecting piece (148), each adapter (460) with a sealing lip (466) for fluid-tight enclosure of the connector is equipped. Reserve bottle according to one of claims 1 to 24, characterized in that the docking section (126; 426; 526) and / or an adapter (460) accommodated therein consists at least partially of elastic material, such as plastic. Reserve bottle according to one of claims 1 to 25, characterized in that the docking section (126; 426) adjoins the collar section (120) as an extension thereof via a radial retracting shoulder (124). Reserve bottle according to claim 26, characterized in that the retracting shoulder (124) has a sealing collar (142) on the side facing away from the docking section (126) for engagement in the neck (112) of the writing fluid container (114). Reserve bottle according to one of claims 26 or 27, characterized in that the docking section (126) merges into an axial extension (138; 438) which can be brought into functional engagement with a sealing collar (136) of a closure cap (128). Reserve bottle according to one of claims 1 to 28, characterized in that the docking section (526) lies essentially radially within the collar section (520). Reserve bottle according to claim 29, characterized in that the docking section (526) is connected to the collar section (520) via a radial web (524) which extends over the end face of the reserve bottle neck (512). Reserve bottle according to claim 29 or 30, characterized in that the docking section (526) is integrally formed on the collar section (520). Reserve bottle according to one of claims 1 to 31, characterized in that the docking section (126; 426; 526) has a thread (130; 430; 574) for a closure lid (128; 528). Reserve bottle according to one of claims 1 to 32, characterized in that the docking section (126; 426; 526) is radially elastic. Reserve bottle according to one of claims 1 to 33, characterized in that the attachment (110; 410; 510) and / or the docking section (126; 426; 526) and or an adapter (460) which can be inserted into the docking section is made of elastic at least in some areas Plastic is made. Reserve bottle according to one of Claims 1 to 34, characterized in that the attachment (110; 410; 510) can be screwed onto the neck (112; 512) of the bottle body of the reserve bottle (300).

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