US3418058A - Fountain pen with siphon-pen insert - Google Patents

Fountain pen with siphon-pen insert Download PDF

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Publication number
US3418058A
US3418058A US563460A US56346066A US3418058A US 3418058 A US3418058 A US 3418058A US 563460 A US563460 A US 563460A US 56346066 A US56346066 A US 56346066A US 3418058 A US3418058 A US 3418058A
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US
United States
Prior art keywords
pen
insert
holder
siphon
fountain
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
US563460A
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English (en)
Inventor
Gossel Edgar Hans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Faber Castell AG
Original Assignee
AW Faber Castell GmbH and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AW Faber Castell GmbH and Co filed Critical AW Faber Castell GmbH and Co
Application granted granted Critical
Publication of US3418058A publication Critical patent/US3418058A/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

Definitions

  • a fountain pen is provided with a siphon-pen insert in one end with a detaching tool for removing the insert from the tubular body of the pen.
  • the insert has a frusto-conically shaped surface which fits in frictional engagement into a similarly shaped surface on the body of the pen.
  • the insert has helical grooves in its frustoconically shaped surfaces for providing compensating channels communicating with the ink chamber within the pen.
  • a gasket is positioned within the pen to provide a seal between different parts of the tubular body of the pen and between the body of the pen and the insert.
  • the present invention relates to a fountain pen which is provided with a siphon-pen or writing-tube insert and is especially adapted for writing or drawing with india ink.
  • Another object of the invention is to provide a siphonpen insert which may be easily removed from the pen holder by means of a special detaching tool without any alternity of damage to the insert or the pen holder.
  • a further object of the invention is to provide this detaching tool as a part of the fountain pen which may be fitted like a cap upon the front end of the pen holder so as to protect the siphon pen when the fountain pen is not being used and may be fitted upon the rear end of the pen holder so as to extend its length when the fountain pen is being used for writing or drawing.
  • FIGURE 1 shows a longitudinal section of a fountain pen according to the invention from which the protective cap is removed;
  • FIGURE 2 shows a longitudinal section of the detching tool; while FIGURE 3 shows a cross section which is taken along the line II IIII of FIGURE 1.
  • the fountain pen according to the invention essentially consists of the central parts 1 and 2 of the tubular shank or pen holder, of a plunger mechanism 3 and 4 within this holder, of a front part 5 of the holder, and a tubular insert 7 which carries the siphon pen 8 and the parts associated therewith.
  • the plunger mechanism 3 and 4 may be of a conventional type as employed in fountain pens and comprises a rotary knob 3 which may be provided with longitudinal ribs or knurling, a tubular nut member 4' which is rigidly secured to the knob 3 but rotatable within the holder 1, 2, and a spindle 4 which is screwed into the nut member 4' and carries a plunger 4" which is in sealing engagement with the inner surface of the holder part 1.
  • a rotary knob 3 which may be provided with longitudinal ribs or knurling
  • a tubular nut member 4' which is rigidly secured to the knob 3 but rotatable within the holder 1, 2
  • a spindle 4 which is screwed into the nut member 4' and carries a plunger 4" which is in sealing engagement with the inner surface of the holder part 1.
  • the front part 5 of the holder is screwed by means of a thread 5 upon the front end of its central part 1 and tightly sealed relative thereto by a gastket ring 6 which also seals the tubular insert 7 relative to the holder 1, 2.
  • This insert 7 consists of a tubular shank which has a conical outer surface a which tapers toward the rear and is provided with a helical air-inlet and compensating groove 1). At its front end, this shank part of the insert 7 terminates into a writing tip 7' which carries the siphon pen or writing tube 8. By means of its rearwardly tapering cone a, the siphon-pen insert 7 is tightly fitted into a corresponding conical bore in the front part 5 of the holder and is thus firmly held therein by the frictional connection between the insert 7 and the front part 5 of the holder.
  • the air and compensating channel 12 in the conical outer surface of the insert 7 the advantage is attained that this channel may be easily cleaned from the outside.
  • the helical shape of this channel b has the advantage that it facilitates and improves the frictional connection between the insert 7 and the holder part 5 and that the web between the helical groove is thereby given the highest possible stability of shape in the direction in which the insert 7 is screwed into the holder part 5.
  • the helical channel [1 is preferably designed so that its cross-sectional area of flow gradually increases from its rear end toward its front end.
  • the central bore of the insert 7 contains a weight member 10 which is freely slidable therein and carries on its front end a cleaning wire 9 which projects through the siphon pen 8.
  • the rear end of the insert 7 is provided with a removable stop member in the form of a tubular screw 11 which is provided with a wire screw slot to permit it to be screwed into and out of the insert 7 by means of a coin.
  • the filling operation of the fountain pen according to the invention may be carried out in the usual manner by retracting the plunger 4" and thereby sucking the ink into the holder.
  • the end of the siphon pen 8 is applied upon the writing surface whereby the cleaning wire 9 together with the weight member 10 will be pushed upwardly so that the ink can flow from the end of the siphon pen as required.
  • the front end 7 of the insert 7 which projects from the holder 1, 2, 5 is provided with a screw thread c which corresponds to the interior thread c near one end of a tubular detaching tool 12.
  • This detaching tool 12 may be used like the cap of a conventional fountain pen either for being fitted over the rear end of the holder so as to extend its length for writing or for being fitted over the front part 5 of the holder so as to cover and protect the siphon pen 8 when the fountain pen is not being used.
  • the associated contact surfaces a and d on the front end of the holder 1, 2, 5 and in the end of the detaching tool 12 have a corresponding spherical cross section and are convex and concave, respectively, so that, when this end of the detaching tool 12 is screwed upon the thread on the insert and 7 the two contact surfaces d and d will uniformly engage with each other like the surfaces of a ball-and-socket joint even though because of inaccuracies of manufacture the axis of the thread c does not coincide with the main axis of the holder.
  • the fountain pen is held vertically with its tip pointing in the upward direction, the detaching tool 12 is then screwed with its thread 0' upon the thread c on the projecting part 7 of the insert 7 and, after the edge d on tube 12 abuts against the edge d on the front end of the holder part 5, tube 12 is further turned so that the insert 7 will press against the end of the holder part and thereby loosen the conical surface a of the insert from the conical bore in the holder part 5 so that the entire siphon-pen insert 7 to may then be easily withdrawn from the holder.
  • the tubular detaching tool 12 is then held with its free end upwardly under a stream of water coming from a faucet so that the water will flush through the tube 12 and the insert 7 thereon.
  • the detaching tool 12 is unscrewed from the insert 7 and the latter is again fitted into the inner cone a of the holder part 5 so that the fountain pen is again ready for writing.
  • the holder is composed of several parts and the joint between the central part 1 and the front part 5 of the holder is located within a plane which intersects the rear part of the insert 7.
  • the gasket ring 6 between the central part 1 and the front part 5 of the holder engages tightly upon the outer peripheral surface of the rear part of the insert 7 and thus also serves for sealing the tubular insert relative to the ink chamber and the holder.
  • the tubular insert 7 as well as the front part '5 of the holder and the detaching tube 12 are preferably made of a transparent plastic so as to permit the air or compensating channel b to be inspected from the outside to determine whether it requires cleaning and after the cleaning operation, whether it has been properly cleaned.
  • a fountain pen comprising a tubular holder with an ink chamber therein and having a conical bore in its front end, a siphon-pen insert having a front part adapted to project from said holder and having a rear part with a conical outer surface adapted to be tightly fitted into said conical bore and to be removable therefrom, said insert having an outwardly facing screw thread on its projecting part, and a tubular detaching tool having a corresponding inner screw thread in one end thereof adapted to be screwed on said outer thread until said tool presses against the front end of said holder and thereby loosens said insert from said conical bore so as to permit said insert to be withdrawn from said holder.
  • a fountain pen comprising a tubular holder, said holder comprising a tubular central part forming an ink chamber, a plunger mechanism disposed within one end of said central part, and a tubular front part disposed on the other end of said central part, said front part disposed in threaded engagement with said central part, said front part having a shoulder formed in its surface facing said central part, said central part having a shoulder disposed in opposed spaced relationship with the shoulder on said front part, a gasket disposed between the shoulders on said front part and central part to form a seal there between and extending inwardly into the ink chamber in said central part, said front part having a bore therethrough with the surface thereof in diverging relationship in the direction of its end remote from said central part, and a siphon-pen insert having the first part thereof disposed within the bore in said front part and a second part extending outwardly from said front part, a portion of the first part of said siphon-pen insert having a tapering surface arranged to conform to and to fit within and in frictional

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  • Pens And Brushes (AREA)
US563460A 1965-07-09 1966-07-07 Fountain pen with siphon-pen insert Expired - Lifetime US3418058A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0046562 1965-07-09

Publications (1)

Publication Number Publication Date
US3418058A true US3418058A (en) 1968-12-24

Family

ID=7101101

Family Applications (1)

Application Number Title Priority Date Filing Date
US563460A Expired - Lifetime US3418058A (en) 1965-07-09 1966-07-07 Fountain pen with siphon-pen insert

Country Status (3)

Country Link
US (1) US3418058A (de)
CH (1) CH458984A (de)
DE (1) DE1461604C2 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3756733A (en) * 1971-12-01 1973-09-04 Koh I Noor Rapidograph Tubular writing pen
US3955894A (en) * 1974-03-14 1976-05-11 Koh-I-Noor Rapidograph, Inc. Tubular writing pen
US4269529A (en) * 1978-11-13 1981-05-26 Mccollough John D Pen with articulate handle
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
USD554291S1 (en) * 2006-07-12 2007-10-30 Cosmolab, Inc. Cosmetic eyeliner
CN103264590A (zh) * 2013-04-16 2013-08-28 浙江工业大学 大肚钢笔

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3329943A1 (de) * 1983-08-19 1985-02-28 A.W. Faber-Castell Unternehmensverwaltung GmbH & Co, 8504 Stein Schreibgeraet mit dichtelement

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US734563A (en) * 1902-12-09 1903-07-28 Frank M Kegrize Fountain-pen.
US2401167A (en) * 1940-03-12 1946-05-28 Kovacs Theodor Fountain pen
US3020884A (en) * 1957-11-29 1962-02-13 L & C Hardtmuth Inc Writing implement with a replaceable fluid-holding cartridge
US3315644A (en) * 1964-12-24 1967-04-25 Rapidograph Inc Pen nib

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE626712C (de) * 1937-06-21 Hans Schirm Fuellfederhalter mit Glasfeder
DE738888C (de) * 1940-03-12 1943-09-04 Guenther Wagner Fa Fuellfederhalter mit Schreibrohr
DE831656C (de) * 1949-11-15 1952-02-14 Josef Schndeider Fuellhalter mit massiver Feder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US734563A (en) * 1902-12-09 1903-07-28 Frank M Kegrize Fountain-pen.
US2401167A (en) * 1940-03-12 1946-05-28 Kovacs Theodor Fountain pen
US3020884A (en) * 1957-11-29 1962-02-13 L & C Hardtmuth Inc Writing implement with a replaceable fluid-holding cartridge
US3315644A (en) * 1964-12-24 1967-04-25 Rapidograph Inc Pen nib

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3756733A (en) * 1971-12-01 1973-09-04 Koh I Noor Rapidograph Tubular writing pen
US3955894A (en) * 1974-03-14 1976-05-11 Koh-I-Noor Rapidograph, Inc. Tubular writing pen
US4753546A (en) * 1978-02-14 1988-06-28 Koh-I-Noor Rapidograph, Inc. Pressure balanced stylographic pen
US4269529A (en) * 1978-11-13 1981-05-26 Mccollough John D Pen with articulate handle
US4930921A (en) * 1980-03-10 1990-06-05 Koh-I-Noor Rapidograph, Inc. Tubular writting pen with superposed pressure equalization chambers
USD554291S1 (en) * 2006-07-12 2007-10-30 Cosmolab, Inc. Cosmetic eyeliner
CN103264590A (zh) * 2013-04-16 2013-08-28 浙江工业大学 大肚钢笔
CN103264590B (zh) * 2013-04-16 2015-03-04 浙江工业大学 大肚钢笔

Also Published As

Publication number Publication date
DE1461604B1 (de) 1970-03-12
CH458984A (de) 1968-06-30
DE1461604C2 (de) 1974-08-01

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