US3819284A - Writing instrument - Google Patents

Writing instrument Download PDF

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Publication number
US3819284A
US3819284A US00331043A US33104373A US3819284A US 3819284 A US3819284 A US 3819284A US 00331043 A US00331043 A US 00331043A US 33104373 A US33104373 A US 33104373A US 3819284 A US3819284 A US 3819284A
Authority
US
United States
Prior art keywords
reservoir
wick
ink
plunger element
writing instrument
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
US00331043A
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English (en)
Inventor
E Kreuzer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3819284A publication Critical patent/US3819284A/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
    • B43K5/00—Pens with ink reservoirs in holders, e.g. fountain-pens
    • B43K5/18—Arrangements for feeding the ink to the nibs
    • B43K5/1818—Mechanical feeding means, e.g. valves; Pumps
    • B43K5/189—Pumps

Definitions

  • the writing tip of a writing instrument may consist of a porous nylon body.
  • the wick-like ink reservoir tov which the writing tip is connected may consist of felt or the like.
  • Fibre-tipped pens are frequently throw-away instruments which are discarded when the ink reservoir has been exhausted.
  • a substantial disadvantage of all throw-away writing instruments, be they fibre-tipped or ballpoint pens is that one cannot easily perceive when they have already or are about to run out of writing fluid. Very frequently, such emptying occurs just when the writing instrument is needed and no replacement is available. I
  • a writing instrument comprising a body having a writing tip at one end and containing an ink reservoir communicating with the writing tip for supplying ink thereto, a second reservoir inside the body containing a reserve supply of ink for use when the first reservoir is exhausted, and an operating plunger element which is movably mounted in the body and is operable from the exterior thereof to cause the second reservoir to discharge its contents into the first reservoir.
  • a writing instrument having a body containing an ink reservoir wick communicating with capilliary passages of element, whether or not the second reservoir has been V 2 discharged, and therefore whether the instrument is almost spent.
  • the externally operable plunger of a fibre-tipped pen embodying the invention is preferably operated simply by pushing but could, instead, be advanced inwardly by a rotary action.
  • the element can additionally be provided with an visible indication, for example a mark, which shows the initial position of the operating element and thereby makes it readily discernible to the user whether or not the reserve of ink has been taken into use.
  • the second reservoir is a wick or felt or the like which is arranged to be longitudinally slidable in response to operating the plunger into contact with element at a distance behind the first reservoir. If, after the first reservoir connected to the writing tip has been exhausted through writing, the operating element is pushed forward, that is towards the writing tip, then the second or spare reservoir is brought into contact with the first or main reservoir, so that the latter can absorb the ink from the spare reservoir and can continue supplying ink to the writing tip.
  • the main reservoir advantageously has a greater capillarity than the spare reservoir, which can be achieved, for example, by the fibre density being lower in the spare reservoir than in the main reservoir.
  • the operating plunger element may be locked in its initial, ready position such that it can be actuated only when a predetermined force is exerted thereon.
  • the plunger element may be prevented from moving inadvertently by a part of the body of the writing instrument conforming closely to, or mating with, the said element, there being provided in this part of the body a predetermined breaking point at which the part breaks away on forcing the operating element inwardly.
  • FIG. 1 shows a fibre-tipped pen according to the in vention'in which the ink reservoir designed to hold the reserve of ink is in the form of a wick slidable or displaceable by means of the operating element;
  • FIG. 2 shows a constructional form with a reservoir wick for the reserve of ink which is fixed immovably in the body of the pen;
  • FIG. 3 shows a constructional form in which the reserve of ink is in a liquid-charged pad.
  • Each pen illustrated in the drawings is fibre-tipped pen having a conical or tapered end containing a bore in which is fixed, in a manner known per se, a capillary writing tip 2.
  • the inner or rear end of the tip 2 is embedded in a reservoir wick 3 composed of felt or some other fibrous material with a capacity for ink storage.
  • the reservoir wick 3 is' supported at its front end nearest the tip 2 against a shoulder 1' of the body.
  • the opposite, rear end of the reservoir wick 3 bears against an annular shoulder 4' on the inside of a plastics ring 4 forced into the body l.
  • the internal bore of the ring 4 is stepped to form the annular shoulder 4' and its end remote from the reservoir wick 3 encloses the front end of a reservoir wick 5 designed to hold a reserve of ink.
  • the rear part of the wick 5 is guided for sliding movement in an internal bore of an insert element 6 which is forced into the open rear end of the body 1.
  • the insert element 6 there is a push pin 7, the rear end of which projects from the insert element 6 by an amount corresponding at least to the distance between the rear end of the reservoir wick 3 and the front end of the reservoir wick 5.
  • the push pin 7 has a collar 8 extending into a groove 9 in the insert element 6.
  • the push pin 7 consists of a comparatively easily deformable and preferably springy material which makes it possible to push it with accompanying deformation of the collar 8 into the internal bore of the insert element 6 until the collar 8 catches in the groove 9. Owing to the mating engagement of the collar 8 in the groove 9, the push pin 7 is secured against any unintentional, premature inward movement.
  • the deformable nature of the pin 7 makes it possible for a sufficiently large force applied to the end of the pin 7 to overcome the resistance to inward movement thereof created by the collar 8 and groove 9.
  • its peripheral surface may be ccmented to the internal bore of the insert element 6, provided it is possible for the bond to be ruptured.
  • the reservoir wick containing the reserve ink can be pushed forward by forcing the push pin 7 inwardly until the front end of the wick 5 comes into contact with the rear end of the reservoir wick 3, which thereafter absorbs the reserve ink from the reservoir wick 5 in consequence of capillary action and passes it on to the writing tip 2.
  • the forced-in pushed pin 7 indicates that the supply of ink is now running out and complete exhaustion of the writing instrument must soon be expected.
  • the different shading of the two reservoir wicks is in tended to indicate that the fibre density of the reservoir wick 3, the size of the capillary passages between the fibres and, consequently, its capillary action are greater than the fibre density of the reservoir wick 5 and its capillary action.
  • the rear end of the reservoir wick 3 is supported against an inwardlytumed rim 6 at the front or innermost end'of the insert element 6, in which the reservoir wick 5 for the reserve of ink is so arranged that it is fixed immovably by the rim 6' and is held thereby at a certain distance from the rear end of the reservoir wick 3.
  • the push pin 7 is so held in the insert element 6 by cementing that it can be pushed inwardly from its position shown in the drawing into the interior of the body only by the application of a predetermined force. In this case, the reservoir wick 5 is compressed, so that it releases the supply of ink contained in it and this is absorbed by the exhausted reservoir wick 3 and passed on to the writing tip 2.
  • the rear end of the reservoir wick 3 is held in a plastic ring 4 forced into the body 1.
  • the ring 4 has an end face remote from the reservoir wick 3 which is in the form of a conical depression which opens into a throughflow orifice 4".
  • a pressurized liquid pad 10 containing a reserve supply ofink.
  • a push pin 7 is held in the insert element 6, the pin 7 being displaceable longitudinally pushed sufficiently hard to overcome a predetermined retaining force.
  • the lower or inner end of the push pin 7 has a sharp point 11.
  • a weak point is produced by the penetration of the point 11 into the pad 10 and causes the pad to burst immediately owing to the internal excess pressure.
  • the escaping ink then flows into the space 12 surrounding the pad 10 and out of this space through the orifice 4" of the ring 4 into the reservoir wick 3.
  • a special seal 13 is formed, which seal, for example, may consist of a sleeve of yielding plastic.
  • a writing instrument comprising: a body, a first ink reservoir wick therein, a writing tip at one end of said body, said tip having a plurality of capillary passages in communication with said first reservoir wick to receive ink therefrom, a second reservoir inside said body containing a reserve supply of ink for use when said first wick is exhausted, and means operatively associated with said second reservoir for causing said second reservoir to discharge its contents into said first reservoir wick, said means being a plunger element mounted in said body in a first position for movement relative thereto into a second position, and said second position indicating that said second reservoir had discharged its content into said first reservoir wick.
  • said second reservoir is a wick which is longitudinally slidable within said body, said wick being movable into contact with said first reservoir wick in response to actuation of said plunger element, thereby enabling its ink contents to flow into said first reservoir by capillary action.
  • a writing instrument is a wick which is immovably secured within said body, said wick being spaced from an adjacent end of said first reservoir wick, and said second reservoir wick being compressible in response to actuation of said plunger element, whereby release and delivery of its ink contents to said first reservoir wick is attained.
  • a writing instrument contains ink under pressure and a sharp point is provided at the inner end of said plunger element for penetrating said second reservoir when said plunger element is actuated, whereby said second reservoir bursts and releases its ink contents to said first reservoir wick.
  • a writing instrument according to claim 1, wherein said plunger element is mounted for sliding movement in the end of said body remote from said writing tip.
  • a writing instrument according to claim 1, wherein said plunger element is secured against inadvertent actuating movement in an initial, ready position thereof to prevent premature emptying of said second reser- V0".
  • a writing instrument wherein said plunger element and said body include a mating groove and rib formation to secure said plunger element against inadvertent actuating movement, said groove and rib being separable when a predetermined actuating force is applied to said plunger element.
  • a writing instrument according to claim 6 wherein 9. A writing instrument according to claim 2, wherein said plunger element is cemented in said body, the cethe fibre density of said first reservoir wick is greater merit bond being rupturable when a predetermined acthan the fibre density of said second reservoir wick. tuating force is applied to said plunger element.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pens And Brushes (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
US00331043A 1972-02-21 1973-02-09 Writing instrument Expired - Lifetime US3819284A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2208111A DE2208111C3 (de) 1972-02-21 1972-02-21 Kapillarschreibgerät für flüssige Tinten

Publications (1)

Publication Number Publication Date
US3819284A true US3819284A (en) 1974-06-25

Family

ID=5836618

Family Applications (1)

Application Number Title Priority Date Filing Date
US00331043A Expired - Lifetime US3819284A (en) 1972-02-21 1973-02-09 Writing instrument

Country Status (14)

Country Link
US (1) US3819284A (ru)
JP (1) JPS4926A (ru)
AT (1) AT344042B (ru)
AU (1) AU446608B2 (ru)
BR (1) BR7301151D0 (ru)
CA (1) CA965915A (ru)
CH (1) CH547179A (ru)
DE (1) DE2208111C3 (ru)
ES (1) ES188895Y (ru)
FR (1) FR2173016B1 (ru)
GB (1) GB1401123A (ru)
IT (1) IT978294B (ru)
NL (1) NL156349B (ru)
ZA (1) ZA73900B (ru)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043681A (en) * 1975-09-22 1977-08-23 Takaji Funahashi Writing instrument
US4224000A (en) * 1977-12-23 1980-09-23 J. S. Staedtler Tubular drafting pen with improved writing point assembly
US4318626A (en) * 1977-11-15 1982-03-09 Edward Bok Pen with an improved ink injection system
US5808645A (en) * 1992-11-25 1998-09-15 Tektronix, Inc. Removable applicator assembly for applying a liquid layer
US20110102379A1 (en) * 2005-08-19 2011-05-05 Silverbrook Research Pty Ltd Electronic stylus with force sensing arrangement
US8448380B1 (en) * 2009-08-04 2013-05-28 Chauming Yang Wicknet

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50115644A (ru) * 1974-02-26 1975-09-10
US4017871A (en) * 1976-02-09 1977-04-12 Graphic Controls Corporation Marker with three phase ink circuit
JPS52170829U (ru) * 1976-06-19 1977-12-26
JPS536338U (ru) * 1976-06-30 1978-01-20
DE3014761C2 (de) * 1980-04-17 1982-10-21 Schwan-Stabilo Schwanhäußer GmbH & Co, 8500 Nürnberg Schreib- oder Markierungsgerät
JPS6136387Y2 (ru) * 1980-11-13 1986-10-22
JPS60155478A (ja) * 1984-01-25 1985-08-15 Sharp Corp プリンタにおける用紙送り装置
US4894128A (en) * 1986-05-05 1990-01-16 The Dow Chemical Company Membrane unit for electrolytic cell
GB2194138A (en) * 1986-08-27 1988-03-02 Johnston Hong Reservoir applicator using erasable ink
DE4324113C2 (de) * 1993-07-20 1999-09-09 Staedtler Fa J S Schreib- oder Zeichengerät mit austauschbarem Schreibmittelbehälter
DE4343880C2 (de) * 1993-12-22 1998-01-29 Schwan Stabilo Schwanhaeusser Schreibgerät
DE202010011839U1 (de) 2010-08-26 2011-11-28 Stabilo International Gmbh Reserveanzeige bei Schreib-Auftraggeräten
DE102010035473B4 (de) 2010-08-26 2015-02-26 Stabilo International Gmbh Mine für Schreib- bzw. Auftraggeräte mit Reserveanzeige

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094130A (en) * 1959-03-30 1963-06-18 Wiener William Toothbrush
US3116719A (en) * 1962-04-27 1964-01-07 Mentmore Mfg Co Ltd Self-filling fountain pens
US3167056A (en) * 1962-04-17 1965-01-26 Frank T Johmann Container for fluids with reserve space
US3167057A (en) * 1962-04-17 1965-01-26 Frank T Johmann Containers for fluids with reserve space
DE1231132B (de) * 1960-07-13 1966-12-22 Helmut Bross Dipl Ing Tinten- oder Tuschepatrone fuer Fuellhalter aus einem elastisch deformierbaren Plastikmaterial
US3399020A (en) * 1966-10-31 1968-08-27 Anita M. Margolis Eye cosmetic applicator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094130A (en) * 1959-03-30 1963-06-18 Wiener William Toothbrush
DE1231132B (de) * 1960-07-13 1966-12-22 Helmut Bross Dipl Ing Tinten- oder Tuschepatrone fuer Fuellhalter aus einem elastisch deformierbaren Plastikmaterial
US3167056A (en) * 1962-04-17 1965-01-26 Frank T Johmann Container for fluids with reserve space
US3167057A (en) * 1962-04-17 1965-01-26 Frank T Johmann Containers for fluids with reserve space
US3116719A (en) * 1962-04-27 1964-01-07 Mentmore Mfg Co Ltd Self-filling fountain pens
US3399020A (en) * 1966-10-31 1968-08-27 Anita M. Margolis Eye cosmetic applicator

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043681A (en) * 1975-09-22 1977-08-23 Takaji Funahashi Writing instrument
US4318626A (en) * 1977-11-15 1982-03-09 Edward Bok Pen with an improved ink injection system
US4224000A (en) * 1977-12-23 1980-09-23 J. S. Staedtler Tubular drafting pen with improved writing point assembly
US5808645A (en) * 1992-11-25 1998-09-15 Tektronix, Inc. Removable applicator assembly for applying a liquid layer
US20110102379A1 (en) * 2005-08-19 2011-05-05 Silverbrook Research Pty Ltd Electronic stylus with force sensing arrangement
US8448380B1 (en) * 2009-08-04 2013-05-28 Chauming Yang Wicknet

Also Published As

Publication number Publication date
ZA73900B (en) 1973-11-28
DE2208111C3 (de) 1974-08-15
FR2173016A1 (ru) 1973-10-05
ES188895U (es) 1974-02-16
FR2173016B1 (ru) 1976-11-05
NL7300450A (ru) 1973-08-23
IT978294B (it) 1974-09-20
DE2208111A1 (de) 1973-09-06
NL156349B (nl) 1978-04-17
GB1401123A (en) 1975-07-16
AU446608B2 (en) 1974-03-28
ATA17773A (de) 1977-10-15
AU5228673A (en) 1974-03-28
DE2208111B2 (de) 1974-01-24
JPS4926A (ru) 1974-01-05
CH547179A (de) 1974-03-29
BR7301151D0 (pt) 1973-11-01
AT344042B (de) 1978-06-26
CA965915A (en) 1975-04-15
ES188895Y (es) 1974-09-16

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