US3788754A - Ink cartridge for tubular writing pen - Google Patents

Ink cartridge for tubular writing pen Download PDF

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Publication number
US3788754A
US3788754A US00348345A US3788754DA US3788754A US 3788754 A US3788754 A US 3788754A US 00348345 A US00348345 A US 00348345A US 3788754D A US3788754D A US 3788754DA US 3788754 A US3788754 A US 3788754A
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US
United States
Prior art keywords
ink cartridge
ink
connection region
tubular
point pen
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.)
Expired - Lifetime
Application number
US00348345A
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English (en)
Inventor
S Glasa
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Individual
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Individual
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Filing date
Publication date
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Application granted granted Critical
Publication of US3788754A publication Critical patent/US3788754A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K8/00—Pens with writing-points other than nibs or balls
    • B43K8/16—Pens with writing-points other than nibs or balls with tubular writing-points comprising a movable cleaning element
    • B43K8/18—Arrangements for feeding the ink to the writing-points

Definitions

  • the invention relates to an ink cartridge adapted to be connected to the tip of a tubular point pen, the ink reservoir of which is provided, at the end facing the tip of the tubular point pen, with a transverse wall which is adapted to be broken open on connection to the tip of the pen, and beyond which the outer wall enclosing the ink reservoir projects forward to form a connection region.
  • the circular cylindrical connection region is adapted to be pushed onto a cylindrical extension at the rear end of the tip of a tubular point pen, the ink cartridge being thereby opened.
  • the cylindrical extension has a central aperture which is in communication with the inner bore provided in a screwed-in cylinder body and containing the drop weight.
  • the cylinder body contains the tubular writing point, and in the rear region the inner bore is connected by way of one or more radially extending apertures to an ink equalizing chamber the front end of which is in communication with the ambient air.
  • the ink may dry in the ink equalization chamber, so that no further equalization of pressure through this ink equalization chamber is possible, and the tubular point pen is then no longer ready for use. Complete cleaning, which is timeconsuming and tedious, is then necessary.
  • the present invention avoids such cleaning of the ink equalization chamber which is otherwise occasionally necessary.
  • the connecting region is double-walled and between the two walls there is provided an ink equalization chamber open at the front and closed by the transverse wall at the rear.
  • an ink equalization chamber provided in the tip of the tubular point pen, or on the outer surface of the cylinder body inserted into the-said tip is no longer used, but the ink equalization chamber is situated in the ink cartridge.
  • a new, unsoiled ink equalization chamber is thus used on each occasion, without the cleaning of the ink equalization chamber; as previously necessary, being required.
  • the ink cartridge according to the invention is preferably connected to a tubular point pen tip consisting of a cylinder body which at the front merges into a tubular writing point mount and which has an inner bore which receives the drop weight with acleaning wire and is open at the rear, the tip being characterized in that in the cylinder body there is provided an annular chamber which surrounds the inner bore and which is open at the rear and open at the front, for the purpose of receiving the connecting zone of the ink cartridge.
  • the ink cartridge according to the invention is thus inserted from the rear into the annular chamber of this tubular point pen tip and is held sealingly in the said annular chamber.
  • the annular chamber which is open at the front, the front end of the ink equalization chamber provided in the transition region of the ink cartridge is in communication with the ambient air.
  • the ink equalization chamber in the ink cartridge preferably extends spirally, and the connection region of the ink cartridge usually'has a circular cross-section.
  • the inner of the two walls may consist of a separate inserted cylinder, on the outer surface of which there is provided a depression which forms at least part of the ink equalization chamber and which preferably extends in spiral form.
  • the inserted cylinder may be adapted to be screwed on the front into the connection region by means of a depression provided in the inner surface of the outer of the two walls.
  • the transverse wall closing the ink reservoir of the ink cartridge may have a prepared breaking point, and, if the transverse wall and the inserted cylinder are in one piece, a prepared breaking point may also be provided in the transition region between the transverse wall and the inserted cylinder.
  • the prepared breaking point in the transverse wall serves for opening the ink reservoir on connection to the tip of the tubular point pen, and the prepared breaking point provided in the transition region between the transverse wall and the inserted cylinder serves to make a connection between the rear end of the ink equalization chamber and the ink reservoir.
  • the wall surrounding the annular chamber may be connected to the inner portion of the cylinder body by means of ribs distributed over the periphery and lying in front of the annular chamber, and these ribs may form gripping de pressions between one another.
  • a stop for the front edge of the connection region of an ink cartridge may be provided at the front end of the annular chamber.
  • Reliable opening of the ink cartridge through the breaking open of the transverse wall can be achieved in a simple manner if the axial distance between the stop and the rear end of the inner wall is greater than the axial distance between the front edge of the connection region and the transverse wall of an ink cartridge.
  • the car tridge according to the invention preferably serves to contain ink and is thus usually used in connection with a tubular point pen, it is also possible to fill this cartridge with a different writing liquid, for example writ--
  • the ink cartridge shown in the drawing has an ink reservoir 12 which on the side facing the tip 14 of a tubular point pen is closed by a transverse wall 16.
  • the outer wall 18 surrounding the ink reservoir chamber 12 extends forward beyond the transverse wall 16 into a connection region 20.
  • connection region 20 is made with double walls, by the insertion therein of a cylinder 22, in the outer surface of which is formed a spiral depression 24 which together with the inner surface of the wall 18 forms in the connection region 20 a spiral ink equalization chamber 26 which is open at the front 28.
  • connection of the wall 18 to the inserted cylinder 22 there is also provided in the inner surface of the wall 18 a spiral depression 30 (FIG. 2) by means of which the inserted cylinder can be screwed from the front into the connection region.
  • the transverse wall 16 and the inserted cylinder 22 are in one piece, so that after the ink reservoir 12 has been filled the cartridge 10 can be closed by screwing in the inserted cylinder.
  • the spiral depression 30 in the inner surface of the wall 18 is so arranged that there remains in it, between the wall 18 and the inserted cylinder 22, a free space (FIG.
  • transverse wall and the inserted cylinder can be made separately.
  • the transverse wall can then, for example, be made in one piece with the outer wall 18, and the ink reservoir is then filled from the rear through an opening, which is subsequently closed by means of a suitable insert.
  • the. inserted cylinder also need not extend quite as far as the transverse wall, but a predetermined gap may be left between it and the rear edge of the inserted cylinder, this gap subsequently forming part of the ink equalization chamber. Care must then be taken that when the transverse wall is broken open a connection is made-between the ink reservoir and the ink equalization chamber.
  • the tubular point pen tip 14 which is to be connected to the ink cartridge 10 consists of a cylinder body having an inner bore 32, which contains the drop weight 34.
  • the cleaning wire 36 fastened to the front end of the drop weight projects into the writing tube held in its mounting in the cylinder body.
  • a cap 38 provided with a central bore is inserted into the rear end of the inner bore 32 to secure the drop weight, and in addition to break through the transverse wall 16 of the ink cartridge 10 when the latteris placed on the tip 14 of the tubular point pen, as will be described hereinafter.
  • the tip 14 of the tubular point pen has an annular chamber 40 which surrounds the inner bore 32 and is separated from the latter by a partition, and which is surrounded by a corresponding outer wall 42.
  • this outer wall' is connected by means of ribs 44 to the remainder of the cylinder body,
  • the annular chamber being open in the front between the ribs.
  • the regions 46 between the ribs may serve as gripping depressions.
  • An ink cartridge 10 can be inserted from the rear into the annular chamber 40 until its front edge lies against a stop 48 in the annular chamber. The ink cartridge has then reached its end position.
  • the transverse wall 16 comes into contact with the rear edge of the cap 38, because the axial distance between the front edge of the connection region 20 and the transverse wall 16 is shorter than that between stops 48 and rear edge of the cap 38.
  • the transverse wall 16 is thus pushed backwards by the rear edge of the cap 38 and a prepared breaking point 50 provided in the transverse wall, and also a prepared breaking point 52 provided in the transition region between the transverse wall 16 and the inserted cylinder 22 break open. Consequently, on the one hand the ink reservoir 12 is opened and on the other hand a connection is also madebetween the ink reservoir and the ink equalization chamber 26.
  • the cap 38 is provided, as shown in FIG. 2, with outwardly directed ribs 54 which are arranged in star form, and between which the ink can pass through from the ink reservoir to the ink equalization chamber.
  • the relatively inexpensive ink cartridge is simply replaced, without the complicated required cleaning of the ink equalization chamber, which is otherwise necessary in conventional tubular point pens.
  • a holder stem 58 can be screwed from the rear in known manner on the tubular point pen tip.
  • This holder stem may be provided in its interior with a suitable stop by which the ink cartridge can be pressed into its end position, that is to say against the stop 48, when the stem is screwed on, so that the user requires applying practically no force for the insertion of the cartridge.
  • an ink cartridge for connection to the tip of a tubular point pen and having an ink reservoir therein provided at the end facing the tip of the tubular point pen, with a transverse wall which is adapted to be broken open on connection to the tubular point pen tip, with an outer wall which surrounds the ink reservoir projecting forward beyond the transverse wall so as to form a connection region, the improvement comprising:
  • connection region being double-walled
  • connection region is cylindrical in cross-section.
  • cylinder body which merges at the front into a tubularwriting point mount and having an inner bore open at the rear for receiving a drop weight with its cleaning wire, said cylinder body having an annular chamber which surrounds said inner bore and being open at the rear and open at the front for receiving said connection region of the ink cartridge.
  • a tubular point pen tip as claimed in claim 9 the wall surrounding said annular chamber being connected to the inner portion of the cylinder body by ribs distributed over the periphery and lying in front of said annular chamber.
  • a tubular point pen tip as claimed in claim 10 said ribs forming gripping depressions between one another.

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  • Pens And Brushes (AREA)
US00348345A 1972-04-07 1973-04-05 Ink cartridge for tubular writing pen Expired - Lifetime US3788754A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722216706 DE2216706B2 (de) 1972-04-07 1972-04-07 Tuschepatrone fuer roehrchenschreiber

Publications (1)

Publication Number Publication Date
US3788754A true US3788754A (en) 1974-01-29

Family

ID=5841238

Family Applications (1)

Application Number Title Priority Date Filing Date
US00348345A Expired - Lifetime US3788754A (en) 1972-04-07 1973-04-05 Ink cartridge for tubular writing pen

Country Status (6)

Country Link
US (1) US3788754A (fr)
JP (1) JPS527772B2 (fr)
DE (1) DE2216706B2 (fr)
FR (1) FR2179203B1 (fr)
GB (1) GB1419327A (fr)
IT (1) IT983474B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955894A (en) * 1974-03-14 1976-05-11 Koh-I-Noor Rapidograph, Inc. Tubular writing pen
US4221496A (en) * 1977-11-23 1980-09-09 Mesne Koh-I-Noor Rapidograph, Inc. Writing fluid cartridge
US4753546A (en) * 1978-02-14 1988-06-28 Koh-I-Noor Rapidograph, Inc. Pressure balanced stylographic pen
US4930921A (en) * 1980-03-10 1990-06-05 Koh-I-Noor Rapidograph, Inc. Tubular writting pen with superposed pressure equalization chambers
US6379065B2 (en) 1998-03-26 2002-04-30 Bic Corporation Writing instrument with finger gripping device

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2909472C2 (de) * 1979-03-10 1982-12-23 Pelikan Ag, 3000 Hannover Tintenpatronen-Füllfederhalter
DE3009169C2 (de) * 1980-03-10 1982-07-22 Rotring-Werke Riepe Kg, 2000 Hamburg Schreibflüssigkeitstank
EP0089067B1 (fr) * 1980-03-10 1986-05-28 rotring-werke Riepe KG Réservoir ou cartouche d'encre pour pointe à écrire
DE3346172C1 (de) * 1983-12-21 1985-05-15 Pelikan Ag, 3000 Hannover Patrone mit Schreibflüssigkeit für Schreibgeräte, insbesondere Tintenpatrone
US5420400A (en) * 1991-10-15 1995-05-30 The Boeing Company Combined inductive heating cycle for sequential forming the brazing
US5914064A (en) * 1991-10-15 1999-06-22 The Boeing Company Combined cycle for forming and annealing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517453A (en) * 1946-04-27 1950-08-01 Sweet John Frederick Cartridge fountain pen
GB1017342A (en) * 1961-06-23 1966-01-19 Aurora Societa Per Azioni Improvements in or relating to synthetic-material cartridges for liquids
US3237606A (en) * 1960-11-17 1966-03-01 Parker Pen Co Ink reservoir
US3756733A (en) * 1971-12-01 1973-09-04 Koh I Noor Rapidograph Tubular writing pen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517453A (en) * 1946-04-27 1950-08-01 Sweet John Frederick Cartridge fountain pen
US3237606A (en) * 1960-11-17 1966-03-01 Parker Pen Co Ink reservoir
GB1017342A (en) * 1961-06-23 1966-01-19 Aurora Societa Per Azioni Improvements in or relating to synthetic-material cartridges for liquids
US3756733A (en) * 1971-12-01 1973-09-04 Koh I Noor Rapidograph Tubular writing pen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955894A (en) * 1974-03-14 1976-05-11 Koh-I-Noor Rapidograph, Inc. Tubular writing pen
US4221496A (en) * 1977-11-23 1980-09-09 Mesne Koh-I-Noor Rapidograph, Inc. Writing fluid cartridge
US4753546A (en) * 1978-02-14 1988-06-28 Koh-I-Noor Rapidograph, Inc. Pressure balanced stylographic pen
US4930921A (en) * 1980-03-10 1990-06-05 Koh-I-Noor Rapidograph, Inc. Tubular writting pen with superposed pressure equalization chambers
US6379065B2 (en) 1998-03-26 2002-04-30 Bic Corporation Writing instrument with finger gripping device
US6488426B1 (en) * 1998-03-26 2002-12-03 Bic Corporation Writing instrument with finger gripping device

Also Published As

Publication number Publication date
GB1419327A (en) 1975-12-31
DE2216706A1 (de) 1973-10-18
FR2179203A1 (fr) 1973-11-16
JPS527772B2 (fr) 1977-03-04
JPS4916515A (fr) 1974-02-14
DE2216706B2 (de) 1976-12-09
IT983474B (it) 1974-10-31
FR2179203B1 (fr) 1977-02-04

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