US2536923A - Fountain pen - Google Patents

Fountain pen Download PDF

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Publication number
US2536923A
US2536923A US674260A US67426046A US2536923A US 2536923 A US2536923 A US 2536923A US 674260 A US674260 A US 674260A US 67426046 A US67426046 A US 67426046A US 2536923 A US2536923 A US 2536923A
Authority
US
United States
Prior art keywords
writing
ink
instrument
pressure
casing
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
US674260A
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English (en)
Inventor
Hans R Fehling
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.)
Eversharp Inc
Original Assignee
Eversharp Inc
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 Eversharp Inc filed Critical Eversharp Inc
Application granted granted Critical
Publication of US2536923A publication Critical patent/US2536923A/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
    • B43K24/00—Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/02—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions
    • B43K24/08—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by push-buttons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K7/00—Ball-point pens
    • B43K7/02—Ink reservoirs; Ink cartridges
    • B43K7/03—Ink reservoirs; Ink cartridges pressurised, e.g. by gas

Definitions

  • This invention relates to fountain pens*v and particularly to? fountain pens in which a: baismounted" for'rotaton in ar housing' or setting with part' oftiie:y ball exposed, the unexposed" partN of the ⁇ ball brei'ng; in contact?'witlrir a ⁇ supply of so* that, asv'te ball" is rotated a the; vgap' iet'weem the bail and its housing: and
  • A' furtherobject: of thisinvenpn isf to gm'- -vide'- a writing instrument with-1a. retraotaiole writing' 'bali-point. containing; a.. tiexibl'e.. yel'.u asbe ink' container. adapted, to i''ntce; nlr: forwai-diy towardr ipoint andVor removing or reducing: ⁇ the?v pressure ini the container' when the bali' point retracted into the bodyV of the pen; f
  • Fig. 1' is arr enirgni. iongitudiual section', ii Inst-rating;-or1e lzuefilzreri embodiment o'ftne ⁇ gres.- entf ⁇ invention; showingl the' writing' and: ind; fee@ ing 7portion in retracted" posit'iorrf ⁇ Fig*l Qa-similarfvi'ewisnowingf'the writingiand ink' eedn ⁇ portieusrin:purine positiont' Fig: 3is detniltakenorr'lfi" Y Fig. 4 isa rfragmentai. enla section.
  • il@ is; -imaunted'f ⁇ .for Iret'fmion;in hfforms en exten- .stcnoffastenreontiuitfflaxia, passingfthro-ugi nose .piece l'flhavin asnorioe vlf atorfnearftne end remnter rem lsuchiendoitiieeon duitl :isysealed-f ⁇ byf ane :encff ciber-ire liga Vscrewed ner end or shoulder 24 of the nozzle ll is mounted a coil spring 25.
  • Fig. 1 shows the writing portion of the instrument in the retracted position. It will be seen that spring 25 is extended, the knob 27 projects beyond the rear end of the casing le, and the.
  • the bag 2l is iilled with an ink, preferably a, Viscous ink which passes by way of hole or slaughter I8 into and along the tube l1 and an axial duct in the member it to the ball l.5,soj that Q 'theball is fed with inli. k
  • ink preferably a, Viscous ink which passes by way of hole or slaughter I8 into and along the tube l1 and an axial duct in the member it to the ball l.5,soj that Q 'theball is fed with inli. k
  • manual pressure is applied to urge theknob 2l' axially forward of casing I0 with the result that spring 25 is com- ",vpressed, and the'ball I5 andnozzle l are projected beyond theo'pen mouth 33 of the nose ll pelled position.
  • A'ilange 22 is preferably formed in the casing l0 against which, when the instrument is propelled, the forward end of a cylinder y. 36 ,extendsfrom the member le to a position forwardly of the 'ange 22 on the collar 23, and is a sliding ⁇ it withinthe casing lll.
  • the member 28 made conveniently of rubber or similar Jmaterial and may be in the form of a hollow cylinder, so that it can be readily depressed, and
  • the pressure applied to urge theink toward the ball will Vary in accordance with the ldegree of fullness of the bag ⁇
  • the arrangement may be such thatjwhen theinstrurnentis retracted, dependent upon the state of fullness of-.the bag, a degree-v of pressure maystillrbe applied to the bag to -f 'urge the ink toward -the ball, but the arrangement and disposition of the'Y parts is such that, when'the instrument is in the retracted position, as shown in Fig.
  • the sac member 2l is preferably of rubber, as stated,
  • coil spring 25 is preferably a comparatively long spring, as shown, to achieve the aforesaid'desideratum, namely that, when the instrument is in the retracted position, the pressure exerted' on ⁇ the reservoir is less thanthe capillary forces in .message of resiliencey in writing; the: conduit Hf fulerunrh to a. limited. extent aboutv line; of contact .ate 49f between the member I' and thecasing: 411;, as, shown for example in. Eig.. 4i. That part. of the casing Hf or' 4:1 wherey the membenmakescon.- tact when the nstrumentis propelled may beof conical configuration,v so that the rounded; part of.
  • the, member t6 makes. line. contact, with the .result thatthe. lateral yieldabilityv of. the writing tipi is enhanced. ⁇
  • This. is. an: advantage that it avoidsl a solid feel. when the;-r instrument is being used.
  • clip member I2 functions as a pocket. clip and, ifv thefinstruf ment is inserted into a pocket. before being repelled, it will automatically be. repelled. by the action. of this clip; this is4 advantageous. and is a. safety measure.
  • the invention consists in the provisionof an instrument in which thev writing, and ink containing and feeding assembly is. mounted for propulsion and 'retraction relatively to a. casing and in which pressure is automatically applied, or increased,.urging the ink tcwardtheball.A Furthermore, whenv the Writing portionv of the. instru.- ment is retracted such pressure is automatically removed. or reduced, preferably to a pressure not exceeding the. capillary pressure in the gap between' the ball andits housing..
  • the invention provides av unit which is mounted for propulsion and, retraction relatively to a casing. and in which, when. propelled, is held resili'ently within the casing, so
  • the invention provides an instrument of the said? type-in whichpressure is applied tothe ink reservoir when the instrument is ⁇ propelled" and such pressure is removed or reduced. when the instrument is retracted and. in which the force applied to retract the instrument-is independent of: the degree of fullness ofthe reservoir..
  • TheA pressure is applied or increased when the .1
  • the propulsion stroke' i'. e., vthe distance which 'the unit travels relative to the casing when propelled or retracted, is constant and independent of the l degree of fullness of the reservoir or the pressure applied to it.
  • the ink reservoir preferably surrounds wholly or in part the member feeding the ink to the ball and means are provided for applying to or increasing and removing or reducing from said reservoir pressure when the instrument is propelled from and retracted into the instrument casing.
  • a fountain pen comprising a casing, a retractable writing unit in the casing, means for carrying a supply of ink, means in the casing adapted to exert pressure on the ink in said rst means to insure flow of ink from said rst means to the writing unit, exteriorly accessible means for projecting the writing unit forward of said casing into writing position, and means for causing said pressure exerting means to operate automatically upon operation ⁇ oft said.
  • a fountain pen comprising a. casing, a. writiing unit. adapted for; propulsionY and retraction relatively of. said casing, an inky reservoir inthe casing in communication with the writing unit, means for applying and removing pressure on the. ink in said reservoir when thev writing. unit is. respectively propelled from and retracted into the casing.. and. exteriorly accessible means ⁇ for .propelling the unit from and retractin'g. it. into the.- casing; Y
  • 3f... vAfountain pen comprising a casing anda .proj ectible. and retractable assembly constituting a. writing unit. adapted normally to, remain. in .thecasingn a conduit. in communication with-.the
  • a fountain pen according to claim; 3,. in which said contractible ink-carrying means .surrounds an. extended portion. of ⁇ the; conduit and inl which a collar is set. intermediate said. inkcarrying means and said pressureapplying means to equalize the force applied onsaid ink-carrying means.
  • a fountain pen according. to; claimv 3 in which said conduit has ⁇ a stop; member and is partly surroundedV by an. auxiliary spring member adapted to smoothly retract. the writing unit into the. casing independently of the. pressurev exerted on said ink-carrying means..
  • an ink receptacle which is provided at its front end with an ink feeding duct leading to the ball, exteriorly accessible means for moving the tip forwardlyV into an exposed writing position, and means actuated by the forward movement of the tip for applying pressure on the ink in the receptacle.
  • a writing instrument of the type employing a rotatably mounted ball as the writing tip, a casing, manually operable means for projecting and retracting the writing tip relative to the front end of the casing from a protectively enclosed position to an exposed writing position, an ink receptacle which is movable with the tip and is provided at its front end with an ink feeding duct leading to the tip, exteriorly accessible means for projecting the tip, and means automatically actuated by said projection of the tip for applying pressure on the ink in the receptacle, said pressure on the ink being relieved upon retraction of the writing tip.
  • a writing instrument of the type having a barrel with a tip comprising a ball writing point in a corresponding socket, an ink reservoir in said barrel including a flexible wall and a pressure device in said barrel adapted to react against said exible wall to urge the ink forward from the reservoir in a continuous column lilling the ball socket; the combination therewith of a manually displaceable member mounted upon said barrel and exposing the ball at will in writing or shield- :ing it in non-writing position, and means under control of said displaceable member to relieve ⁇ the pressure exerted by said pressure device when said member is in point shielding position.
  • a writing instrument of the ball point type comprising a barrel having a writing ball point at the forward end thereof, a socket accommo- -dating said ball point, said barrel having an ink reservoir therein in communication with said socket, said reservoir including a flexible wall element, a pressure device in said barrel adapted -to'react against said flexible wall to propel the ink forward from the reservoir and to maintain the ball socket lled, a member mounted on said barrel maintaining the writing point in shielded position while out of use, and during editing coacting with the rear part or" the ca el, said member when in the latter position coacting with the pressure device to activate the same.
  • a writing instrument of the type coin*- prising a barrel with a tip having a ball writing point in a corresponding socket, an ink reservoir rin said barrel including a flexible Wall and a device in said barrel adapted to react against said ilexible wall to urge the forward from ti: reservoir in a continuous column filling the ball socket; the combination therewith ci an end member on the rear f the barrel and having two settings in one oi' which the point is in retracted, inoperative, shielded position and in the other or which the point is in advanced operative and protruding position, said elements being constructed and arranged to activate said pressure device in the writing setting and to render said device ineffective in the non-Writing setting of the instrument.
  • a writing instrument of the type comprising a barrel, a cartridge therein having a ball Writing point lodged in a corresponding socket at the forward end thereof, an operi 'ing n'ieinber at the rear of the barrel coacting with said cartridge alternatively to dispose the point thereof in advanced or Writing position or in retracted or shielded position, said cartridge having an ink reservoir with a flexible wall element, a pressure device Within said cartridge adapted to react against said flexible Wall to urge the ink content forward, said operating member being correlated with said pressure device for substantially inoperative condition thereof when the cartridge is retracted and to render the same effective when the cartridge is in advanced or writing position.
  • a writing instrument comprising a barrel, a writing tip, an ink supply means, an ink feeding means for said tip, all contained in said barrel; and means operable to condition said instrument for writing purposes and simultaneously to bring about the exertion of pressure on the ink in said supply means to feed said ink to said ink feeding means,
  • the ink feeding means is a ball point
  • the barrel has a normally inactive ink propulsive member coni-ined therein and the means operable to condition the instrument comprises a member on the barrel manually displaceable preparatory to writing, to set the ink propulsive member into action.

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  • Pens And Brushes (AREA)
US674260A 1945-09-18 1946-06-04 Fountain pen Expired - Lifetime US2536923A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2536923X 1945-09-18

Publications (1)

Publication Number Publication Date
US2536923A true US2536923A (en) 1951-01-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
US674260A Expired - Lifetime US2536923A (en) 1945-09-18 1946-06-04 Fountain pen

Country Status (2)

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US (1) US2536923A (en, 2012)
BE (1) BE467399A (en, 2012)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2692580A (en) * 1952-11-17 1954-10-26 Kahn David Inc Writing instrument
US2813511A (en) * 1955-07-05 1957-11-19 Parker Pen Co Writing instrument
US2884900A (en) * 1952-09-16 1959-05-05 Flo Ball Pen Corp Writing instrument
DE1086587B (de) * 1954-02-09 1960-08-04 Universal Fountain Pen & Penci Druckkugelschreiber
US3113558A (en) * 1960-12-29 1963-12-10 Leonard L Marraffino Marking device
US3168889A (en) * 1961-03-06 1965-02-09 George A Rubissow Fountain pen
US3415603A (en) * 1967-03-17 1968-12-10 Floyd W. Blanchard Self-pressurizing retractable ballpoint pen
US3516754A (en) * 1967-03-17 1970-06-23 Floyd W Blanchard Self-pressurizing,retractable ballpoint pen
US4997301A (en) * 1990-02-28 1991-03-05 Sheu Jyug Jen Fountain pen
EP0491100A1 (en) * 1990-12-19 1992-06-24 Tyng-Jen Sheu Fountain pen
USD613794S1 (en) * 2009-02-20 2010-04-13 Ben S. Loeb, Inc. Instrument barrel
USD683401S1 (en) * 2011-07-22 2013-05-28 Montblanc-Simplo Gmbh Writing instrument
US10974540B1 (en) * 2019-12-22 2021-04-13 Hangzhou Jianyi Technology Co., Ltd Retractable pen with a push button

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2096397A (en) * 1935-03-07 1937-10-19 Harris Frederick George Method of and means for handling soap paste, grease, and other materials of like consistency
US2107424A (en) * 1936-07-18 1938-02-08 Celanese Corp Marking device
US2398548A (en) * 1945-07-05 1946-04-16 Premium Merchandising Corp Fountain pen
US2400679A (en) * 1944-05-17 1946-05-21 Eterpen Sa Financiera Fountain pen
US2432061A (en) * 1946-08-23 1947-12-02 Eagle Pencil Co Writing instrument

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2096397A (en) * 1935-03-07 1937-10-19 Harris Frederick George Method of and means for handling soap paste, grease, and other materials of like consistency
US2107424A (en) * 1936-07-18 1938-02-08 Celanese Corp Marking device
US2400679A (en) * 1944-05-17 1946-05-21 Eterpen Sa Financiera Fountain pen
US2398548A (en) * 1945-07-05 1946-04-16 Premium Merchandising Corp Fountain pen
US2432061A (en) * 1946-08-23 1947-12-02 Eagle Pencil Co Writing instrument

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2884900A (en) * 1952-09-16 1959-05-05 Flo Ball Pen Corp Writing instrument
US2692580A (en) * 1952-11-17 1954-10-26 Kahn David Inc Writing instrument
DE1086587B (de) * 1954-02-09 1960-08-04 Universal Fountain Pen & Penci Druckkugelschreiber
US2813511A (en) * 1955-07-05 1957-11-19 Parker Pen Co Writing instrument
US3113558A (en) * 1960-12-29 1963-12-10 Leonard L Marraffino Marking device
US3168889A (en) * 1961-03-06 1965-02-09 George A Rubissow Fountain pen
US3415603A (en) * 1967-03-17 1968-12-10 Floyd W. Blanchard Self-pressurizing retractable ballpoint pen
US3516754A (en) * 1967-03-17 1970-06-23 Floyd W Blanchard Self-pressurizing,retractable ballpoint pen
US4997301A (en) * 1990-02-28 1991-03-05 Sheu Jyug Jen Fountain pen
EP0491100A1 (en) * 1990-12-19 1992-06-24 Tyng-Jen Sheu Fountain pen
USD613794S1 (en) * 2009-02-20 2010-04-13 Ben S. Loeb, Inc. Instrument barrel
USD626590S1 (en) * 2009-02-20 2010-11-02 Points Of Light, Inc. Instrument barrel
USD626998S1 (en) * 2009-02-20 2010-11-09 Points Of Light, Inc. Instrument barrel
USD683401S1 (en) * 2011-07-22 2013-05-28 Montblanc-Simplo Gmbh Writing instrument
USD685028S1 (en) * 2011-07-22 2013-06-25 Montblanc-Simplo Gmbh Cap for a writing instrument
US10974540B1 (en) * 2019-12-22 2021-04-13 Hangzhou Jianyi Technology Co., Ltd Retractable pen with a push button

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Publication number Publication date
BE467399A (en, 2012)

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