Title:
Fountain pen
United States Patent 2325550


Abstract:
This invention :pertains to fountain pens and more particularly to an :improved and simplified form of pen.adapted to be filled with a liquid by the .action of atmospheric pressure by means of nisair control mechanism operable when;the pen is inserted in liquid to first permit atmospheric filling...



Inventors:
Sager, Solomon M.
Application Number:
US44570342A
Publication Date:
07/27/1943
Filing Date:
06/04/1942
Assignee:
Sager, Solomon M.
Primary Class:
Other Classes:
401/40
International Classes:
B43K5/00
View Patent Images:



Description:

This invention :pertains to fountain pens and more particularly to an :improved and simplified form of pen.adapted to be filled with a liquid by the .action of atmospheric pressure by means of nisair control mechanism operable when;the pen is inserted in liquid to first permit atmospheric filling of the pen and then operable to :trap the entered charge in the pen before the pen is removed from the :liquid. -It will thus be noted that the invention relates to a fountain pen wherein the ordinary manually operable types of filling mechanisms such as lever operated rubber sacks, pump mechanisms or plunger means are all replaced by a simple air control valve means which simply has to be opened and closed when the pen is projected into a supply of liquid ,to cause filling of the pen inaan amount proportional to the degree of submergence of the pen in the liquid.

It is an object of this invention to provide improved and simplified forms of fountain pens wherein the filling of the pen is accomplished by means of-atmospheric pressure.

It is also an.object of this invention to provide an improved and simplified form of fountain pen containing a dry ink charge :and adapted to be filled with a liquid by the action of atmospheric pressure by the simple operation of an air control valve means when the pen is projected into a supply of the liquid.

It is a further object ofthis invention to provide an improved type of fountain -pen adapted to carradry a d ink containing cartridge and.hav,ing an air control valve means adapted -to be opened when the pen is projected into a supply of water topermit atmosphericipressure filling of ,the pen with.the water and further adapted when closed to trap the entered charge'of water in the pen to permit the water in the pen to dissolve .the dry ink to form a supply of writing fluid in the pen.

-It is furthermore an object of this invention to provide a fountain pen which:merely uses an air control valve means for accomplishing the filling and trapping of a charge of liquid in the .pen, said liquid being either a prepared fluid.ink .ora liquid such as water which coacts.with and .dissolves a dry ink in the pen when the pen is of a type which carries a dry ink containing cartridge.

Another object of the invention is to provide ,a fountain pen including an air control means which is operable to permit filling ýof a pen with .a liquid by means of atmospheric pressure when Athe pen is inserted into a supply of liquid a dis-tance determining the degree of filling of the.pen Swith -the filling method being .accomplished by merely opening and then closing the valve .control means.

Still another object of the invention is.the provision of a fountain pen.constructed to carry an apertured dry ink containing cartridge the dry ink of which is adapted to ibe taken into solution as needed by a liquid, admitted into the pen by the action of atmospheric pressure by-opening and then closing an air escape control mechanism forming part of the fountain pen and operable when the pen is projected into a liquid.

Still another-object of the invention is the provision of an improved and simplified form. of fountain,pen including a .barrel having a feed bar and pen point engaged in one end thereof while .the opposite open end.thereof is equipped with an air control valve cap unit.formed.to carry a.reserve dry ink cartridge therein, and aservice .dry ink cartridge on the exterior thereof for projection into the pen barrel, said valve cap unit .adapted to be operated so that the opening and closing thereof governs the atmospheric pressure filling of the pen with a liquid when the .pen is projected into a supply of the liquid.

SIt is also an object of this .invention to provide a water and dry ink type of fountain pen for ad.mitting a charge of water into the pen by ati mospheric pressure and including an apertured cartridge containing .a plurality' of different charges of: dry ink 1having different degrees of Ssolubility in the water so that he charges may be consecutively consumed in..the order of .their degree of solubility in water. ..

It is an important object of this invention to provide an.improved and simplified form offountain pen in which a dry. ink carrying cartridge may be carried by an air control valve echanism, by the fountain pen section or by the fountain pen feed bar so that the charge of dry ink in the cartridge is accessible to be taken into.solution by a charge of water adapted to first be admitted into the pen by the actiond f atmospheric pressure and then .adapted to be trapped in the p-en by the operation of the air control valve means.

A further important object of the invention is to provide a fountain pen which .may be filled with' either ink or water or-any .other liquid by the action of atmospheric pressure whenthe,pen is partially submerged and when an air passage :control valve in the exposed end of the pen is .first opened and then closed.

. . Othei- and further important objects of this invention will be apparent from the disclosures in the specification and the accompanying drawings.

The invention (in preferred forms) is illustrated in the drawings and hereinafter more fully described.

In the drawings: Figure 1 is an enlarged elevational and partially sectional view of an improved fountain pen embodying the principles of this invention.

Figure 2 is a sectional view of a container or glass substantially filled with water and showing the writing end of the fountain pen with the main cap removed, projecting into the glass of water to permit filling of the pen by the action of atmospheric pressure an amount equal to the submergence of the pen in the water when the control valve is opened.

Figure 3 is an enlarged fragmentary elevational view of the upper end of the pen illustrating the passaged air control valve means engaged through the valve seat end of the pen barrel.

Figure 4 is a transverse detail section taken on line IV-IV of Figure 1.

Figure 5 is an elevational view of a dry ink carrying cartridge removed from the pen.

Figure 6 is 'a fragmentary sectional and elevational view of a modified form of the pen wherein the barrel closure head or cap is provided with a dry ink carrying cartridge for insertion into the pen barrel and with a reserve dry ink carrying cartridge in a chamber of the barrel head.

Figure 7 is a longitudinal sectional view of a modified form of fountain pen with the air control valve head shown in elevation and in closed position and illustrating a pen in which it is not necessary to provide a dry ink cartridge if-it is desired to fill the pen by projecting the writing end thereof in a supply of ink when the air control means is opened.

Figure 8 is an enlarged longitudinal sectional view partly in elevation of another modified form of fountain pen wherein a dry ink cartridge is carried on the inner end of a removable section for the fountain pen.

Figure 9 is a longitudinal-sectional view, partly in elevation, of another modified form of fountain pen wherein a combination plug and dry ink cartridge is removably inserted longitudinally in the feed bar of the pen.

Figure 10 is an enlarged fragmentary elevational and sectional view of the upper end of a modified form of pen wherein the barrel closure head or cap and the threaded stem thereof are both chambered to serve as a reserve dry ink magazine for carrying an extra dry ink cartridge on a closure head or knob for the chamber, and wherein the threaded stem'also carries a dry ink service cartridge on the end thereof for insertion into the ink forming chamber of the pen barrel to provide a reserve dry ink magazine type pen with a full length barrel.

As shown in the drawings: Referring to Figures 1 to 5, inclusive, an improved type of fountain pen is disclosed which includes a pen barrel or body I which is constructed of an opaque material, a transparent material or a combination of both with the transparent material preferably being used intermediate the ends of the pen to afford a view of the interior ink chamber 2 in order that the amount of ink or liquid within the barrel chamber 2 may be readily ascertained. The lower end of the barrel or body I is tapered to form an integral section 3 the outer end of which terminates in an extension sleeve or collar 4 which serves as an ink guard member. Integrally formed around the lower portion of the fountain pen barrel between the section 3 and the ink guard sleeve or collar 4 is a threaded ring flange 5 which is adapted to be removably engaged by a threaded portion 6 provided on the interior of a main fountain pen cap T. The main fountain pen cap 7 is provided to cover the writing end of the fountain pen when the pen is not in use and may be removed and engaged on the upper end of the pen barrel when it is desired to use the pen. The main cap 7 is provided with a retaining tip for holding a pen clip 3 in position on the cap.

Projecting through the ink guard 4 and tightly into the section 3 of the fountain pen barrel is a pen point or nib 9 and a feed bar 10.

The upper end of the fountain pen barrel or body I is formed with an end wail I which is provided with an axial threaded opening or passage 12 which communicates with the ink chamber 2 at its inner end and having its outer end communicating with or ending in a valve seat 13 formed in the outer end of the end wall I I of the fountain pen barrel.

The upper end of the fountain pen barrel is adapted to be completed and closed by means of an auxiliary cap or head 14 the inner end of 20 which is formed to provide a valve 15 adapted to be tightly seated in the valve seat 13 to close the upper end of the fountain pen barrel with an airtight seal. Integrally formed on the inner or valve end of the auxiliary cap or head 14 is a s35 threaded stem or shank 13 which is threaded through the threaded opening 12 in the end wall 11 of the barrel and projects into the ink chamber 2. The threaded shank 16 is provided with a longitudinally disposed air groove or passage 11.

,40 The air groove or passage 17 serves as an escape for air coming from the interior of the fountain pen barrel when the control valve at the upper end of the fountain pen barrel is opened.

Integrally formed on the inner end of the closure stem 1 Sis an extension or plug 18 on which the open end of a dry ink carrying unit is adapted to be removably engaged.

The dry ink carrying unit comprises a cartridge or shell 19 open at one end and closed at the opposite end. The cartridge or shell 19 may be formed of any suitable material and is provided with a plurality of openings or apertures 20 at the closed end of the cartridge and with a plurality of widely spaced apertures 21 in the intermediate portion of the cartridge, as clearly illustrated in Figure 5. The cartridge 19 is charged with dry ink. In the form of cartridge illustrated in section in Figure 1 the cartridge or shell 19 is of a multiple type containing a primary charge 22 of dry ink which is relatively small and is engaged in the closed end of the cartridge in the vicinity of the closely associated apertures 20. The cartridge also contains a secondary or major charge 23 of dry ink which contacts the primary charge 22 at one end and extends through the major portion of the cartridge leaving a recess at the open end of the cartridge to permit the cartridge to be secured on the plug IS as shown in Figure 1.

The primary charge 22 of dry ink in the cartridge consists of a quantity or supply of highly soluble dehydrated dry ink the particles of which are bound together by a suitable soluble binder so that the primary- charge 22 is composed of material which is practically 100 per cent soluble and adapted to be- readilc d-sskvedj-by watef r admitted into- the- barrel tof- rmi a qitibt supply of writing fluid whiteh is-m aietO iiestantaneously available- for writing purpoiea whs theý fountain pen is filled with waterias' hereiafter more fully described. The- majorp er seeomdry charge- 2n of dry ink is substatiaally IaIgew tban. the primary, charge-andomsistoidyrpik-~ardeh-yd ated ink particles which a&esecivedtogether byai suitable- soluble binder andi suleeted te greater pressure- to produce' a dry iny . chairg- which isý more slowly soluble when, suWestedi teo the, action of water. A dry, iaticarttridgei ,tha provideadwith double or multiple chargesofiCdBy2 ink- to provide a, primary- or priaingtma- aag whichi when, subjeeted toithe actifb- owatA-wi pModUe a-quick charge- of writing itnk thereby ermittini the dry ink charge of slower solubiRty' to. eisubsequentlyabsorbed after the primar a rgp e has. been, used up. It isto-be undeTrstoodlithawhiltethe-multiple type of dry ink cartridge'H.aald.yink eharges'made accessible tol the, action off-wate by means of. the apertures in the cartridge'thstihe dry inlecharges are-not entirely disseslteI.at;oc~but-aare. gadually dissolved- depending,,upon the--rate. aitwhich the dry ink can be carried itntslution by thei-water.

After. a quantity of. ink-haao.been produced in the fountainpen successietclrgesso£f water may bettaken into thepertto..,produn.additional quantities of ink before, the contents, of the, dry ink cartridge is.completely.'cenaounrae The quantity of dry ink carried by a single cartridgehas been devised to.produc substantiaily, amo-nce of writing fluid or an amount equivalent to theiquantity which is usually. provided in thei, ordinary bottle s5 of ink usually. purchasaedimsfllUingfountainpens; While a multipleý-typeioft dnyd-ink.cartridge has been illustrated anddescrlad it wit of./course be understood that m a aeruisaed- cartridgae may be provided, with. bute a. single cleIgea of dry ink. if so,desired.

Attentionr is..called t, t :.e, impraoed, method Whereby- the fountaimn pen of: this inventiol may be filled without-r.equiting:.tlremec-hanical operation, of filling, mechanisms;. by' simply- employing :. the action of atmospheite Brpssu-re; The; improved method merely consists: of using, a. container. or- glass., 2,4 andi filling the, same with a quantity of water: 2A,. With-:ther fountain pen valve, 15 in closed,.osition;as- illustrated, in Figure 0, I and-withthe main. ca4p 7emoved from-the writing end of the pen, the pen point end of the-pen is- projected downwardly iratfr the water 25 to a depth: which will. determine the amount of, filling of.the pen barrel i. Wttthewrjiting;end of the pen projected, into: the- wte:- as,; illustrated in Figure 2 the auxiliary7 QaBa or head; 14i is rotated thereby opening: theraircentrpM valve, 15 and simultaneously exposing ornipening one:end: of the air passage 17 in the, stemr.lI:: B oPening the o control valve theactiont o atmpspherie pressure on the top; surface,,, of therwater 2Iwill cause the water to be forced;upwardly intq the. nk chamber: 2, of the fountain pen babrea-. ai unti- theelevel of. the. water inthei cham.ber. 2regsatrs with the level of the: water in- the gass; 2 ,. It will thus be noted that the funther the:.nen is-projected into the water the, geater-the-ddogree of: filling of. the. ink. chamber; 21 of:thepen1ibatrel. After the water has been, forat.unLwardlyý by atmospheric; pressurer into ;the- pen-tbrel, the.auxiliary cap: or head 1t is4iagaiimturrnetto cause- the valve 15itoseat.tightly,-againstathe-valve.seat: 1Sthereby shutting off-the air;escanalapas el9 an'd:trapping the:charge; oftwaterwithia:tectamob&r, '2 of.the pen barrelr- Th*e fltSld Pniam no B be removed from tie- glass o 4kA ftviiam Itsuld- intos which it hasbeen.pre p aoetd:antif.*thbi cy necessary toi-wipej the1 wa~urte s tri entirior of the previously- submnerzgaed pmt*s= at- e foatafi pen. Wi. the ten i*- fit bl~.r s at the, action. of asmospiheri~tpsaallaalfg ot water, the chargeoft wate~ co it iamt the- pen will pass through- the apearttene* aof irA ottrtdge 19. as wellasithrough tlie apetls 21. swe the prinmary dr& i1k chwgi. 2 is- quFdky soluble, the water passing *il 84altfike avpotres 2M will im.media tiely act asm tw poiMaar =dtg charge 22 to dissolve a quMantita- o te a ta tprod ice a quiclk cha.geoA wttflAlM hit A-tbatantaiz~ pen ink chamber 2. This produ.e'.what .might, be termed- a primings oriitiB atraOzge atinlc fluid. in which: the "primary- h ga t ri fixt:' taliei -into solhitien, b the i wvtib the. ftbmtain. pen after which;I the siwe dissoitr seconda.y dry ink cha.ge- 23:iat~itenit intakitliman. .le single chargel o£wlatup iW-taMe-fluaisltto wailt o- course only. .take intos a. lUo jpeftetanhedc amount of the- diy,!itink.lto poaoMIw a-lg mquantity of writing, fliid- whithe- hwa I: =a& ups nIayr be re-plenibhediby agaiineijAsetgr lte in. the: containmer of watlerrt ada.vniai= addftianol]charge of water' by thtlearti ot atm~ ipc pressure into the fountaine per - Thtis pEba raswr bý repeated until the.e entite aaf~ge aof drditwithhintthi: cartridgein-tlhe,-fountaift peu*iBellis used up; . To replace- thel empty actile;  within the fbuntaii pen baimdlitt i ie oi tt neessanyr to turn the *secendasyacax ao haiwd 1 mUhitli tise stem i 3 is- completelyi m nefgsetan thte bakeir thereby permitting: the emiptyOca-tidg-te be removed fronm thei stem-prl (pi I t1 * ibw plaCdU rby.- a- filled dry inik carrying' owtaltl;.It will-rtus- bw' seerthtat'artS iimpovedi simplifled method- of-filling. aeitmiai&ipeirismade possible -with the'iuseai.off tte inpoved pen,- hereinbefore describedR, )tts imnboL w ofoan air control valve- meclanism. ith tlrrk Upp~ end-; oa the pen with the assistan-ew; a at n&sphetc pressure, when the pen issihsea;tkd?- itita.cqantit~ aft water and the valve mechani m i opendi es. dscribed..

SReferring- to Fguredaiatmiagazitadesk set type of- combinatibno water asr d dt ilt' fountain pen is, illustrated in .witlhthf*be;diVc aldt writing end of the:pen-is- substantatIUWthi same-*asthat-illustrated. andi describedtiimt conecton with. Figures 1. to5, inclusive, excep1tathtftIlengtih of the auxiliary cap- or head!is lnmanaMed andlchambered- to form: a- magazine fv curaying azreserve. dry-ink cartridge,In the modified friiioftendlistratedain-Figure 6 a magazinetitypeof:sfconday cap or headi unit is provided for coaction with the valve seat end of the founthinpembartnbi I-r T¶-Wsecondary cap or head. unit-comprites aksecondHry cap or- head 26 with theLinnerilrenidiarfWfi,,dl shapedto- form a valve 271 fopr coataix witit tfhe valive' seat 13 of the pen-barre-l hitegrallylf4bmedlon the-valve end of the headi~Z i9 athre-ad~etsten2.8iprovided with an. air passaga 29.- TShe threaded.stem. 23 is threaded through'. tthei titaldedi passage 12- in the end wall3 Il :af~itthwpembamand is. provided on-the end wittlaipli:similtar:ta thefplug- 18-of Figure; 1. toicanra. rammanabl~ dry:ink carrying cartridge- 19 tot holdite same asidilyl supported withim; the-in- chbanier 2 ot the pen.In -order. thattareswra, eupply. o dry.'ink, may be carried-by.'thetbantw iptathe secondlary cap or, head- 2S isprwvide.witti ma dirinl- cartridge carryingrecessEoEchsmliujws 2titmform a. reserve magazine for carrying an extra dry ink cartridge.

The outer endýof the secondary cap or head 26 is provided with a threaded passage and with a valve seat 30. Threaded into the threaded passage is a threaded stem 31 which is formed on the valve end 32 of a closure head or plug 33 which when in place forms a finished end for the fountain pen body. The inner end of the threaded stem 31 is provided with a plug portion similar to the portion 18 of Figure, 1 to form a support for the open end of a reserve, dry ink carrying cartridge 19, which is adapted to be positioned within the magazine chamber 29 so that when the cartridge in the fountain pen'chamber 2 is empty the reserve dry ink carrying cartridge may be substituted in its place. .:...:2 . , The modified form of fountain pen illustrated in Figure 6 is adapted to be filled by the same simple method described in connection with the pen shown in Figures 1 to 5, inclusive. Referring to Figure,7 .a modified form of .atmospheric pressure filling fountain pen is illustrated in which the dry ink carrying cartridge is omitted to provide a fountain pen which may be directly projected into a supply of fluid ink after , which the air control valve unit is opened to permit a supply of ink to be forced into the fountain pen barrel by the action of atmospheric pressure to a height corresponding to the distance of submergence of the pen in the liquid ink. After the 0 pen has been filled with a charge of writing ink the air control valve unit is closed before the pen is removed from:the, ink supply to trap the entered charge of ink within the pen after which the pen is removed from the ink supply and the ex- 5 terior of the submerged portion of the pen may be simply wiped off leaving the pen ready for use.

The modified form of fountain pen illustrated in Figure 7 is similar to .the construction of the pen illustrated in Figures 1 to 5 and the like parts are indicated by corresponding reference numerals. In this modified form of the pen the only difference is that the long threaded stem 16 is replaced by a short threaded stem 34 which is provided with an air escape passage 35.

While the modified form of fountain pen.illustrated in Figure .7 is adapted for use without a dry ink carrying cartridge so that the fountain pen may be filled with a liquid ink instead of making an ink in the fountain pen barrel by the use of water and dry ink, it will be understood that the type of pen illustrated in Figure 1 may also be projected into liquid ink and filled with a supply.-thereof in case the dry ink carrying cartridge has the dry ink supply thereof used up 5 and another dry. ink cartridge is not handy or available at the time that the pen requires refilling.

Figure 8 illustrates another modified form of combination water and dry ink fountain pen adapted to be filled by the action of atmospheric pressure through the-medium of opening and closing a valve control unit when the pen is submerged in a liquid such as water.

The form of pen:shown in Figure 8 comprises a barrel or body 36 which may be constructed, of an opaque material or of a combination opaque material and transparent material. The barrel 36 at its upper end is closed by means of an end wall 31 provided with a threaded opening or passage 38 the outer end of which terminates at a valve seat 39. Adjustably engaged in the end wall 37 of the fountain pen barrel is an air control valve unit comprising a secondary cap or head 40 the inner end: of which is formed to provide a valve 41 which when the head is in closed position is adapted to seat on the valve seat 39 to close the upper end of the fountain pen barrel. Integrally formed on the valve portion 41 of the head 40 is a threaded stem 42 which is provided with an air passage or groove 43 to permit escape of the air from the ink chamber 44 of the fountain pen barrel 33 when the valve 41 is in open position.

The bottom or opposite end of the barrel 36 is provided with a threaded collar or flange 48 for permitting a main closure cap for the writing end of the pen to be threaded onto the barrel.

Removably engaged in the lower or exteriorly threaded end of the barrel 36 is a fountain pen section unit comprising a guard 45 formed with a valve 46 and with a threaded shank 41 to permit the section to be removably threaded into an interiorly threaded portion of the barrel 36 to permit the valve 46 of the guard 45 to seat against the valve seat formed in the lower end of the barrel, to provide an air-tight fit between the guard 45 and the pen barrel.

Engaged in the pen guard 45 is a pen point or nib 8 and a feed bar 10. The ink feed grooves of the feed bar are positioned to register with an ink outlet groove or slot 49 which connects up with a portion 50 formed at the inner end of the threaded shank 47 of the section.. The ink outlet groove or slot 49 is formed in a tapered collar 51 which is integrally formed around a base portion of a head or plug 52 integrally formed on the inner end of the pen section or guard 45.

Removably engaged on the section plug 52 and projecting into the chamber 44 of the barrel 30, is the open end of an apertured ink cartridge 53 containing a primary charge of dry ink 54 and a secondary charge of dry ink 55 to be respectively dissolved by a charge of water in the chamber 44. The pen is adapted to be filled with a charge of water by the action of atmospheric pressure, when the control valve 41 is opened by operation of the head 40 and when the writing end of the pen is projected into a container of water similar to the arrangement illustrated in Figure 2 of the drawings. By referring to Figure 8 it will be noted that the base collar 5. of the pen section serves as a stop for the open end of the ink carrying cartridge when the cartridge is engaged on the supporting plug 52.

Referring to Figure 9 of the drawings another modified form of combination water and dry ink type of fountain pen is illustrated. It comprises a pen body and an air control valve unit similar to thad illustrated and described in connection with the pen shown in Figure 7 and corresponding parts of the pen body and the valve unit are correspondingly numbered.

In the modified form of fountain pen disclosed in Figure 9 a dry ink cartridge carrying feed bar unit together with a pen point or nib 9 is engaged in the lower section end of the body or barrel of the fountain pen. The ink carrying feed bar unit comprises a: feed bar 56 provided with a longitudinal passage 57 and with a notch 58 in one side of the outer end portion thereof. Frictionally engaged longitudinally in the feed bar slot 57 is a combination feed bar plug and dry ink carrying cartridge unit comprising a plug portion 59 the inner end of which is recessed to provide a dry ink chamber 60 to form a dry ink carrying cartridge or shell 61 having a plurality of apertures 62 provided around the inner end portion thereof where the cartridge :projects into the ink chamber of the fountain pen barrel.

Engaged radiallyiin the outer portion of the plug 59 is a pin 63 which when the plig is properly inserted in the feed bar 51 Will seat In the inner end of the notch 58. -The -hamber i60 of the combination plug and dry ink carrying artridge is filled with a primary charge of dry ink-64 and a secondary charge-of dry ink 45 Which Is more slowly dissolvable, than the primary charge of dry ink 64.

It will be noted that the modified form of fountain pen illustrated in :Figure 9 is similar to the type of pen illustrated In Figure 7 the only difference being in that the standard type of feed bar 10 of Figure 7 Is replaced by the cartridge carrying type of feed bar 56. The fountain pen illustrated in Figure 9 Is adapted to be filled with a charge of water by the 'actioh of atmospheric pressure when the writing end of the pen is inserted into a container of water ana the valve control mechanism at the upper end of the pen is operated as hereinbefore described to first admit a charge Of water into the fountain pen barrel and then trap the entered charge by closing the valve control mechanism.

Figure 10 illustrates a modified magazine type of combination Water and dry ink fountain pen wherein both the auxiliary cap or head and the threaded stem thereof are formed with a reserve dry ink chamber, Which may be closed by meanhs of slotted tip or button on the inner end of which a reserve dry ink cartridge is carried to project into the reserve chamber.

In this modified form of the fountain pen the body of the pen is the same as that illustrated in Figure 1 and corresponding parts are numbered accordingly.

The valve seat end of the pen barrel 1, is adapted to be closed by means of a combination barrel closure magazine unit comprising an auxiliary head or cap 6'6 the inner end of which is formed to provide a valve 67 adapted to tightly seat in the barrel valve seat 13 to close the upper end of the pen barrel with an air-tight seal.

Integrally formed on the inner or valve end of the cap or head 66 is a threaded stem or shank 68 which is threaded .through the opening 12 in the barrel end wall i1 to project into the ink chamber 2. The threaded stem 88 is provided with a longitudinal air groove or passage 69 which extends from the bottom of the stem 68 to a point 70 a short distance below the upper end of the threaded portion of the stem. The air groove or passage' 69 serves as an escape for air from the ink chamber 2 when the control valve 67 is opened an amount sufficient to bring the upper end of the groove 69 up to the valve seat 13.

Integrally formed on the inner end of the closure stem 68 is an extension or plug 71 on which the open end of a dry ink cartridge 19 is engaged-to project into the ink forming chamber 2 of the pen barrel. The cartridge 19 is Shown as carrying a single charge for dry ink 22.

For the purpose of carrying a reserve supply of dry ink the cap or head 66 is formed as a magazine by providing a dry ink reserve chamber 72 which extends through the cap or head 66 downwardly into the stem 68. The upper end of the chamber 72 is threaded at 73 to receive the threaded shank 14 of closure tip or button which provides a finished end for the fountain pen valve head or cap 66. The tip or button 75 is formed with a diametrical slot or groove 76 to receive the edge of a coin or any suitable tbol or ~ evice to remove the tip '15 5or secure the same intplace.

,Integrally iformed on the Inter i nd of the tip Shank 74 is a projectionh or plug 71 -ior receiving the 1lpper iend of a reserve try ink carCrying cartritge 19 engaged thereon itithfih the hagazine chamber ~ 2 This arrangement rminits the carrying of an extra suppl6y of d-f Inf, Without interfering With the length or Natapaity of the fountain pen barrel. If daesiretd A ~y ink -cartridge 1S -may be used catrylg holy, single charge of dry ink 22 or 21 as preferred, instead of a dOUble charge As shoVWnhih:t gkrel While the fountain peil hK'Ve b~e illustrated and described as using dry lak A-kiigt bcartridges f 'either a single or mutltile ) hattbe type, it Will of course ue understood that thM fart'ttlr gs may be replac-ee, f destred, b Y~iy irk pellets which may be deposited. i the ink t1fEiin*e chmber 2 of the peh barrel 1 throughthe tulper end of the barrel by. merely remtoving t:e uiper oap or head and Its threaded stem.

-t will thus be noted that an :ImpIroved type of ifountain pen ha :beeVn eYisl Wherein the filling of the pen Is 'hot depelAdet Upon the manual operation of tllnrfg thelethariSt Which are'completely omitted since the pen Is dapted to be filled by the actibn Of atmoSpheric pressure when the writing Iebd f the Jpen is submerged in a liquil a~Id ta hs trol vave mechanism is first opened to permit :atirtlpherl 'pressure filling of the pen With the 'liquid after which it is only necessary to close the ale tif~l hanism to trap the charge of liquid in the 'pie The construction of the pea is Muh .that by the Omission of mechanical nllting mechanisms, the liquid chamber of the petn 1 of substantially maximum capacity. Thede degee Offlliflg of the liquid chamber is controlled 'bythe'tlistance that the Writing end of the fottkuiitAn i.s lhserted into a supply liquid permitting the liquid to flow upwardly into the pen by .the atl0n Of Satmospheric pressure until the level ofthe liquid In the pen is In register with the level To the liquid into which the pen is projected. The pen is of such a simple condtruction that the filling and the trapping of a charge of liquiditn the pen is merely controlled by the opening fia -closing of an air escape control valve imedhanismi preferably '50 pOsitioned at the' upper end of the pen barrel opposite the Writing endof the pen.

It will of course be understood that various details of construction may be varied through a wide range without departing from-the principles of this invention and, it iS, therefore, not the purpose to limit the patent grtated hereon otherwise than necessitated by the scope of the appended claims.

I claim as my invention: L In a water carrying type of fountaih pen, a dry ink unit for insertion therein, and comprising a shell having apertures therein, a priinary charge of highly soluble dry ink in said shell, and a secondary charge of sloWer alissolving dry ink in the shell to be taken nto solutilon by the water in the pen after the primary charge of dry Ink has been consuiilme for the making of a writing fluid in the petn.

2. The combination with a water and dry ink type of fountain pen, of a it y ink unit for use therein and comprising an apHn tured shell, aid a plurality of tharge ofdry ifkt efigaged therein each having a diffrerat degree tf oltibllity'for successive use in the pen for AbIfrptibh by the 7i water to produce a Writing flidrt fo the pen.

3. In a water and dry ink type of fountain pen, including a dry ink unit comprising a shell having a plurality of closely associated apertures and widely spaced apertures in different portions thereof, and dry ink charges of different degrees of solubility carried in the shell with the dry ink of greater solubility positioned adjacent the closely spaced apertures and with the dry ink of slower solubility positioned for access by the widely spaced apertures.

4. A fountain pen adapted to be filled with a liquid by inserting the writing end of the pen into the liquid a distance depending upon the height to which the pen barrel is to be filled, allowing the liquid to flow upwardly into the barrel by the action of atmospheric pressure and simultaneously venting the air in the barrel through an outlet in the other end of the barrel, and trapping liquid in the barrel by closing the air outlet, said pen comprising a barrel, writing means at one end thereof;, an opening at the other end thereof and a valve seat formed on the periphery of said opening, a threaded plug projecting into said barrel and through said opening and having means cooperable with the inner face of the barrel to form a passage for the escape of air when the pen is being filled with liquid, a valve formed on said plug for seating on said valve seat to close said opening and shut off said air passage and trap the liquid in the barrel, and means on the internally projecting end of said plug to hold a supply of dry ink to be dissolved by said liquid.

5. A fountain pen adapted to be filled-with liquid such as water for dissolving dry ink in a cartridge in the pen barrel to form liquid ink by inserting the writing end of the pen into liquid to a depth determining the height to which the barrel is to be filled, allowing the liquid to flow upwardly into the barrel by the action of atmospheric pressure and simultaneously allowing escape of air from the barrel through an outlet in the other end of the barrel, and trapping the entered liquid in the barrel by closing the air outlet, said pen comprising an elongated pen barrel, a dry ink cartridge in said barrel, a writing assembly at the lower end of the barrel communicating with the interior of the barrel, and means for controlling the escape of air from the barrel and for trapping liquid in the barrel, said means comprising an elongated plug with an upper portion threaded in and of substantially the same diameter as the interior of the upper end of the barrel to provide a closure therefor and with a lower portion having a cut-away portion cooperable with the inner face of the barrel to form a vent passage to vent air from the barrel when the upper portion of the plug is withdrawn from the barrel.

6. A fountain pen adapted to be filled with liquid such as water for dissolving dry ink in the pen barrel to form liquid ink by inserting the lower end of the pen into liquid to a depth determining the height to which the pen barrel is to be filled, allowing the liquid to flow upwardly into the barrel by the action of atmospheric pressure and simultaneously allowing escape of air from the barrel through an outlet in the upper end of the barrel, and trapping the entered liquid in the barrel by closing the air outlet, said pen comprising an elongated barrel, a writing assembly at the lower end of the barrel communicating with the interior of the barrel, means for controlling the escape of air from the barrel and for trapping liquid in the barrel, said means comprising an elongated plug with an upper portion, threaded in and of substantially the same diameter as the interior of the upper end of the barrel to provide a closure therefor and with a lower portion having a cut-away portion cooperable with the inner face of the barrel to form a vent passage to vent air from the barrel when the upper portion of the plug is withdrawn from the barrel, and an extension on said plug cooperating with the upper end of the barrel to provide a seal therefor when the upper portion of said plug is within the barrel.

7. In combination, in a dry ink type fountain pen adapted for filling by action of atmospheric pressure when inserted in a liquid point downward with air venting means at the upper end open and for trapping liquid therein by closing of the air venting means, a pen barrel, writing means at one end of and having fluid communication with said barrel, means within the barrel to hold dry ink in the barrel, a supply of dry ink to be dissolved by liquid entering the barrel, and venting means at the other end of the barrel to allow egress of air from the barrel during filling of the pen, said means comprising an opening in said other end of the barrel forming a valve seat, a manually operable valve member to seat on said valve seat, a threaded extension of said valve member projecting through said opening and into the barrel and having vent means thereon terminating short of the valve member and cooperable with the inner face of the barrel to provide passage for air from the barrel, said extension and valve member being rotatably and ::, longitudinally movable relative to the barrel to shut off air passage and to close said opening in the barrel, respectively.

8. A fountain pen adapted to be filled with liquid for dissolving dry ink in the pen barrel by a. inserting the lower end of the pen into liquid to a depth determining the height to which the barrel may be filled, allowing liquid to flow upwardly into the barrel by, the action of atmospheric pressure and simultaneously venting air from the barrel through the upper end of the barrel, and trapping liquid in the barrel by closing the upper end of the barrel, said pen comprising a barrel, writing means at the lower end of and communicating with the barrel, means to hold dry ink in the barrel, and air vent control means at the upper end of the barrel comprising a plug threaded in the barrel to provide a closure therefor and having a lower portion provided with a depressed section in its surface cooperable with the inner face of the barrel to provide a passage for air out of the barrel when said plug is positioned to bring the upper edge of said depressed section substantially to or outside the upper end of the barrel, and a closure valve seating on the upper end of the barrel to seal the same when the plug is positioned substantially wholly within the barrel, said plug and said valve being movable longitudinally relative to the barrel.

9. A fountain pen comprising a barrel communicating with writing means at its lower end and being provided at its upper end with air vent control means, said means comprising a plug having an upper section formed to seat on the edge of the barrel at its upper end in sealing relation therewith, a threaded intermediate section of a size to substantially close the interior of the upper end of the barrel, and a threaded lower section with passage means formed therewith cooperable with the inner face of the barrel to provide air vent means for the barrel when the intermediate section is substantially withdrawn from the barrel, said upper section engaging said edge when the intermediate section is substantially within the barrel.

10. A dry ink type fountain pen adapted to be filled by the action of atmospheric pressure when inserted in liquid point downward and in venting condition, and to trap liquid therein upon the closing of a vent, said pen comprising a barrel with writing means at its lower end and an opening at its upper end adapted to be both closed and sealed by vent closing means comprising a valve member for sealing engagement with a beveled seat at the upper peripheral edge of the barrel to seal said opening when a threaded member depending from said valve member is positioned substantially wholly within the barrel, said threaded member extending through said opening and having its upper portion threadedly cooperable with an interior portion of the barrel to close the upper end of the barrel, and having its lower portion formed with passage means cooperable with the interior of the barrel to provide a vent for air in the barrel when said upper portion is substantially outside of the barrel.

SOLOMON M. SAGER.