EP0533676A1 - Writing unit for a cartridge fountain pen. - Google Patents
Writing unit for a cartridge fountain pen.Info
- Publication number
- EP0533676A1 EP0533676A1 EP91901677A EP91901677A EP0533676A1 EP 0533676 A1 EP0533676 A1 EP 0533676A1 EP 91901677 A EP91901677 A EP 91901677A EP 91901677 A EP91901677 A EP 91901677A EP 0533676 A1 EP0533676 A1 EP 0533676A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air duct
- ink
- writing unit
- longitudinal gap
- extends
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K5/00—Pens with ink reservoirs in holders, e.g. fountain-pens
- B43K5/18—Arrangements for feeding the ink to the nibs
Definitions
- the invention relates to a writing unit for a cartridge fountain pen, in particular a writing unit for a cartridge fountain pen with a pen, a handle and an ink feeder, the ink feeder having lamellar-shaped collecting chambers, the side of the ink feeder facing the pen over the entire length
- a capillary longitudinal gap extends through the length of the ink feeder, and an air channel widens outwards in the radial direction, starting from the longitudinal gap.
- Cartridge fountain pens with writing units of the type in question have been known for decades. Cartridges filled by the manufacturer and sealed with a ball are pierced for use by means of a push-through pin of the writing unit, the ball serving to seal being pressed into the interior of the cartridge to pierce the cartridge. Even after decades of introduction of the cartridge fountain pen in question, writing a new or cleaned cartridge fountain pen is still extremely problematic. On the one hand, it takes minutes in the conventional writing units or the ink guide systems used there, and thus too long, until the ink reaches the tip of the pen after the cartridge has been pierced and all the capillaries important for proper functioning are filled with ink.
- the invention is therefore based on the object of designing and developing the writing unit for cartridge fountain pens of the type mentioned at the outset such that, in particular, in the case of ink feeders dimensioned for large font widths Dripping or leakage of the ink after piercing the cartridge is prevented and the work process is accelerated, on the other hand spilling is largely prevented in the event of pressure and temperature fluctuations.
- the writing unit according to the invention solves the above task by the features of claim 1.
- the air duct extends in the longitudinal direction over the entire area of the collecting chambers up to an end of the collecting chambers facing the pen and serving as a liquid valve Controlled system.
- the air duct is delimited in the radial direction by a surface opposite the longitudinal gap.
- the air duct on the side opposite the longitudinal gap extends to the capillary which is flow-connected with the collecting chambers.
- the controlled system fills with ink as quickly as possible. If underpressure arises during writing, the controlled system empties, ie tears open, and allows air to flow through the air duct to the cartridge. The controlled system is then closed again by the ink flowing in, provided that no further suppression occurs, that is to say no more ink is removed.
- the collecting chambers take over the expanding air or the ink in the ink feeder. Consequently, in the event of an expansion of air, for example due to temperature fluctuations, the ink is not pressed out of the ink feeder towards the spring, but instead passes via the overflow capillary into the collecting chambers, which on the one hand are connected to one another via the overflow capillary, and on the other hand with the longitudinal gap or Air duct are fluidly connected.
- a separate overflow capillary is provided for each collecting chamber.
- the collecting chambers are connected to one another on the one hand, and on the other hand to the longitudinal gap or the air duct via the overflow capillary.
- Such an embodiment of the ink feeder means that even with a dimension tion of the capillary longitudinal gap for realizing large font widths, ie when realizing a large ink throughput, the ink in the ink feeder is not pressed out of the ink feeder when the gas in the ink feeder or the air there expands due to temperature fluctuations. This is because the ink arrives via defined flow paths in the collecting chambers which then serve as ink stores and which in this case have the function of a buffer.
- the collecting chambers compensate for the expansion of the air due to temperature fluctuations, the above features ensure reliable control of the ink, which prevents leakage and in particular also increases the resistance to shaking. Significant insensitivity to temperature fluctuations is guaranteed.
- the air duct widens with stepped walls up to the side opposite the longitudinal gap.
- the ink fills the air channel from the capillary longitudinal gap from stage to stage, as a result of which, with sufficiently good wetting behavior between the ink feeder and the ink, the air channel as a whole is quickly filled with ink. So the ink quickly gets into the overflow capillary and finally into the controlled system.
- the air duct with wavy walls extends to the side opposite the longitudinal gap, whereby sharp edges as "obstacles" for the spreading of the ink are avoided in comparison to the above-mentioned embodiment and the filling process is thereby accelerated again.
- the air duct is expanded with concave or convex walls up to the side opposite the longitudinal gap.
- the air duct is quickly filled with ink. It would also be possible for the side of the air duct opposite the longitudinal gap to be delimited by a likewise concave or convex wall.
- the air duct expands up to the surface opposite the longitudinal gap in such a way that the air duct unites has triangular cross-section.
- the triangular cross section of the air duct could either have the shape of an isosceles triangle or the shape of an equilateral triangle.
- FIG. 1 shows a schematic illustration, in section, of a writing unit according to the invention for a cartridge fountain pen in a side view
- FIG. 2 in a schematic representation, sectioned, the object from FIG. 1 in a top view
- 3 shows a schematic illustration, enlarged and in sections, of the object from FIG. 2 in section along the line AB
- FIG. 4 in a schematic representation, enlarged and section of the object from Fig. 2 in section along the line C-D and
- FIG. 5 in a schematic representation, enlarged and section of the object from Fig. 2 in section along the line E-F.
- FIG. 1 and 2 together show an embodiment of a writing unit according to the invention for a cartridge fountain pen.
- This writing unit which is only shown here by way of example, has as essential components a pen 1, a handle 2 and an ink feeder 3.
- the ink feeder 3 has lamella-like collecting chambers 3e, the side of the ink feeder 3 facing the pen 1 being traversed by a capillary longitudinal gap 3a over the entire length of the ink feeder.
- the longitudinal gap 3a merges with the outside in the entire area of the collecting chambers 3e into an air channel 3c, which takes up a substantially larger cross-sectional area than the longitudinal gap 3a.
- the side of the air channel 3c opposite the longitudinal gap 3a extends to the overflow capillary 3d connecting the collecting chambers 3e.
- the air duct 3c extends to a control section 3g provided at the spring-side end of the collecting chambers 3e.
- the air duct 3c extends in the longitudinal direction over the entire area of the collecting chambers 3e up to a control path 3g formed at the end of the collecting chambers 3e facing the pen 1 and serving as a liquid valve. In the radial direction, the air duct 3c is delimited by a surface opposite the longitudinal gap 3a. The air duct 3c extends on the side opposite the longitudinal gap 3a to an overflow capillary 3d which connects the collecting chambers 3e with flow.
- the figures show that the collecting chambers 3e are connected to one another and to the air duct 3c or the longitudinal gap 3a exclusively via the overflow capillary 3d. Ink and air therefore only get into the collecting chambers or out of the collecting chambers 3e via the overflow capillary 3d.
- the air duct 3c widens up to the surface opposite the longitudinal gap in such a way that the air duct 3c has a triangular cross section.
- the triangular cross section of the air duct 3c in the preferred embodiment here has the shape of an isosceles triangle.
- the handle 2 has a bore 2a, a recess 2b, a flat stop 2c, a stepped bore 2d, a shoulder 2e, a piercing pin 2f with a rear end 2g and a flange 2h.
- the air duct 3c is designed in a triangular shape. Furthermore, the lamellae 3f, overflow capillary 3d, the control section 3g, the air groove 4 and the air grooves 4c can be seen from the illustration in question.
- FIG. 4 shows the object from FIGS. 1 and 2 in a cross section which is laid differently than in FIG. 3, namely along the line C-D.
- the handle 2, the ink feeder 3 and a lamella 3f can also be seen here.
- the position or formation of the capillary gap 3a, the air duct 3c which is triangular in cross section, the air groove 4 and the air grooves 4c can see from this representation the position or formation of the capillary gap 3a, the air duct 3c which is triangular in cross section, the air groove 4 and the air grooves 4c.
- FIG. 5 again shows the object from FIGS. 1 and 2 in section along the line E-F.
- the handle 2 with the piercing pin 2f and the pin 3i on the ink feeder 3 can be clearly seen.
- the capillary longitudinal gap 3a in the pin 3i on the ink feeder 3 is shown.
- This process usually takes a few minutes and leads to the undesired dripping of ink from the nib, especially when the fountain pen immediately after piercing the cartridge with the nib down into a designated quiver or the like in a desk stand is turned off. Even when the air in the writing unit expands, there is dripping due to the ink displaced by the expanded air.
- the ink can thus flow into the ink supply system.
- the ball volume and the piercing pin 2f cause a compression of the air inside the cartridge, which favors the writing of the writing instrument. Due to the design of the ink feeder 3 according to the invention, it is now achieved that not only the capillary gap 3a, which supplies the pen nib 1 with ink, but also the two triangular tips of the air channel 3c fill with ink almost simultaneously due to their capillary action.
- the ink flowing out of the cartridge fills the capillary-acting corners of the triangle of the air duct almost simultaneously with the capillary longitudinal gap 3a - in both cases by capillary action.
- the overflow capillary 3d on the ink feeder 3 and the control section 3g are filled with ink and closed in time so that the ink can no longer flow when it arrives in the nib 1b due to capillary action. This is because the air can no longer flow into the cartridge through the closed-loop system 3g, which ultimately prevents ink from dripping.
- the collecting chambers 3e also serve to receive ink in the event of air expansion in the capillary longitudinal gap 3a or in the air duct 3c and thus compensate for an air expansion in the writing instrument caused by temperature fluctuations. Ink dripping is thus effectively prevented.
- This measure based on the connection between the collecting chambers 3e with the capillary longitudinal gap 3a or the air duct 3c, exclusively via individual overflow capillaries 3d, provides this protection against temperature fluctuations, but also a certain resistance to shaking, in particular with ink feeders 3, which are suitable for font widths of up to 2 , 7 mm are designed approximately.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pens And Brushes (AREA)
Abstract
Une unité d'écriture pour un stylographe à cartouche comportant une plume (1), un corps (2) et un système d'arrivée d'encre (3), unité dans laquelle le système d'arrivée d'encre (3) présente des chambres réceptrices (3e) à lamelles, dans laquelle le côté du système d'arrivée d'encre (3) qui est tourné vers la plume (1) est traversé sur toute la longueur de ce système d'arrivée d'encre (3) par une fente longitudinale capillaire (3a), et dans laquelle un canal d'air (3c) partant de la fente longitudinale (3a) s'élargit vers l'extérieur dans le sens transversal, est constituée, pour éviter une coulée de l'encre hors de la fente de la plume en particulier du fait de fortes variations de température dans le cas d'un système d'arrivée d'encre conçu également pour de grandes largeurs d'écriture, de telle manière que le canal d'air (3c) s'étend dans le sens longitudinal sur toute la zone des chambres réceptrices (3e) jusqu'à une zone de régulation (3g) qui est formée à l'extrémité, tournée vers la plume (1), des chambres de réception (3e) et qui fait office de soupape pour le liquide, de telle manière également que le canal d'air (3c) soit limité transversalement par une surface opposée à la fente longitudinale (3e) et de telle manière enfin que le canal d'air (3c), sur le côté opposé à la fente longitudinale (3a), atteigne des capillaires de décharge (3d) reliant le flux d'encre aux chambres réceptrices (3e).A writing unit for a cartridge stylograph comprising a nib (1), a body (2) and an ink supply system (3), in which unit the ink supply system (3) has lamellae receiving chambers (3e), in which the side of the ink supply system (3) which faces the nib (1) is traversed over the entire length of this ink supply system (3) ) by a longitudinal capillary slit (3a), and in which an air channel (3c) starting from the longitudinal slit (3a) widens outward in the transverse direction, is formed, to prevent a flow of the ink out of the nib slot in particular due to large temperature variations in the case of an ink supply system designed also for large writing widths, such that the air channel (3c) extends in the longitudinal direction over the entire area of the receiving chambers (3e) to a regulation area (3g) which is formed at the end, turned towards s the feather (1), receiving chambers (3e) and which acts as a valve for the liquid, in such a way also that the air channel (3c) is limited transversely by a surface opposite the longitudinal slot (3e ) and finally such that the air channel (3c), on the side opposite the longitudinal slit (3a), reaches the discharge capillaries (3d) connecting the ink flow to the receiving chambers (3e).
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT91901677T ATE98572T1 (en) | 1990-06-09 | 1991-01-15 | WRITING UNIT FOR A CARTRIDGE FOUNTAIN PEN. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4018598 | 1990-06-09 | ||
DE4018598A DE4018598A1 (en) | 1990-06-09 | 1990-06-09 | WRITING UNIT FOR A CARTRIDGE FILLER |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0533676A1 true EP0533676A1 (en) | 1993-03-31 |
EP0533676B1 EP0533676B1 (en) | 1993-12-15 |
Family
ID=6408166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91901677A Expired - Lifetime EP0533676B1 (en) | 1990-06-09 | 1991-01-15 | Writing unit for a cartridge fountain pen |
Country Status (6)
Country | Link |
---|---|
US (1) | US5372445A (en) |
EP (1) | EP0533676B1 (en) |
JP (1) | JP2722133B2 (en) |
CA (1) | CA2079451A1 (en) |
DE (2) | DE4018598A1 (en) |
WO (1) | WO1991019615A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4221609A1 (en) * | 1992-07-01 | 1994-01-13 | Otto Mutschler | Writing unit for a cartridge fountain pen |
US5906446A (en) * | 1996-10-22 | 1999-05-25 | Bic Corporation | Fillerless writing instrument |
JP4454061B2 (en) | 1999-05-17 | 2010-04-21 | 三菱鉛筆株式会社 | Writing instrument |
WO2001005604A1 (en) | 1999-07-19 | 2001-01-25 | Mitsubishi Pencil Kabushikikaisha | Writing implement |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1483675A (en) * | 1920-12-29 | 1924-02-12 | Kritikson Bros Inc | Feed bar for fountain pens |
NL25024C (en) * | 1928-03-05 | |||
DE867213C (en) * | 1951-08-08 | 1953-02-16 | C Josef Lamy | Ink feed assembly |
GB761030A (en) * | 1953-11-24 | 1956-11-07 | Edgar Byron Nichols | Improvements in liquid flow-control |
DE1121973B (en) * | 1956-12-22 | 1962-01-11 | Montblanc-Simplo G.m.b.H., Hamburg | Ink feed for fountain pens |
GB885374A (en) * | 1958-01-15 | 1961-12-28 | Conway Stewart & Company Ltd | Improvements in or relating to fountain pens |
GB1007424A (en) * | 1960-12-07 | 1965-10-13 | Parker Pen Co | Fountain pens |
DE1230331B (en) * | 1961-01-21 | 1966-12-08 | Faber Castell A W | Fountain pen with encapsulated, eccentric ink ring chambers having ink feed |
FR1317286A (en) * | 1961-12-27 | 1963-02-08 | Fagard A J & Cie | Improvement in devices for supplying ink to the nib of a stylograph |
US3402008A (en) * | 1964-12-18 | 1968-09-17 | Parker Pen Co | Writing instrument |
DE1461628A1 (en) * | 1965-04-30 | 1969-03-27 | Montblanc Simplo Gmbh | Ink feed for fountain pen |
DE1511371A1 (en) * | 1966-09-12 | 1969-06-12 | Montblanc Simplo Gmbh | Ink feed for fountain pen |
GB1346580A (en) * | 1970-12-21 | 1974-02-13 | Perry Ltd E S | Pens |
EP0091610B1 (en) * | 1982-03-30 | 1986-06-04 | Anweiler, Walter, Ing. (grad.) | Feeding conduit for a fountain pen |
DE3338227C2 (en) * | 1983-10-21 | 1985-11-28 | Mutschler, Otto, 6900 Heidelberg | Ink pens for writing implements |
DE3421417A1 (en) * | 1984-06-08 | 1985-12-12 | Walter Ing.(grad.) 6907 Nußloch Anweiler | Ink guide for fountain pen |
DE3445944C1 (en) * | 1984-12-17 | 1986-06-05 | Otto 6900 Heidelberg Mutschler | Ink pipe for tube recorders |
DE3526578C1 (en) * | 1985-07-25 | 1987-03-05 | Otto Mutschler | Ink guide for a cartridge-type or piston-type fountain pen |
DE3736954C1 (en) * | 1987-10-31 | 1988-12-15 | Montblanc Simplo Gmbh | Ink line for a fountain pen |
-
1990
- 1990-06-09 DE DE4018598A patent/DE4018598A1/en not_active Ceased
-
1991
- 1991-01-15 JP JP3502029A patent/JP2722133B2/en not_active Expired - Fee Related
- 1991-01-15 WO PCT/DE1991/000024 patent/WO1991019615A1/en active IP Right Grant
- 1991-01-15 CA CA002079451A patent/CA2079451A1/en not_active Abandoned
- 1991-01-15 EP EP91901677A patent/EP0533676B1/en not_active Expired - Lifetime
- 1991-01-15 DE DE91901677T patent/DE59100743D1/en not_active Expired - Fee Related
-
1992
- 1992-11-25 US US07/952,855 patent/US5372445A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9119615A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE4018598A1 (en) | 1991-12-12 |
DE59100743D1 (en) | 1994-01-27 |
EP0533676B1 (en) | 1993-12-15 |
WO1991019615A1 (en) | 1991-12-26 |
JP2722133B2 (en) | 1998-03-04 |
JPH05507245A (en) | 1993-10-21 |
US5372445A (en) | 1994-12-13 |
CA2079451A1 (en) | 1991-12-10 |
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