US2424731A - Fountain pen - Google Patents

Description

July 29, 1947. H. A. BAUER ET AL FOUNTAIN PEN 2 Sheets-Sheet 1 .Illlllllll l Il I. 4

Filed March 8, 1945 July 29, 1947.

` H. A. BAUER ET AL.

FOUNTAIN PEN Filed Maren 8, 1945 v 2 Sheets-Sheet 2 INVENToRs.

2000005 lgwjwofmw Patented July 29, i947 "`Hans A. Bauer Prairie View,

Fred. D. Woods',

' Glencoe, and Garfield L.' Beckstrom, Chicago, Ill., assignors to'Autopoint Company, Chicago, Ill., a 4corporation of Illinois Application .March.8, 1945, Serial No.v 581,590

' 6'Cl'aims. (Cl. 1Z0-52) The present invention relates to fountain. pens and 4especially to a novel fountain penfinwhich removaland replacement of the pen nib maybe quickly accomplished. It fis, therefore,-anim portant object of the presentinvention toy provide a novel and simplified pen assembly inwhich the pen may be quicklyand simply removed and replaced orserviced byone without previous Aexperience and when replaced, requires no ,further adjustment.

The invention further comprehends a` novel pen nib and removable cap assembly sc .constructed and arranged that. the cap may be quicklyand conveniently removed `beicne-.ganol quickly-replaced after lling of the pen. .Such removal Vavoids soilingthe cap ashappensduring the filling operationof the conventionaltype fof pen and obviatesthe necessity of rstwipingthe penclean before it is ready for use.

. The invention further comprehends. a..nove1 barrel Vand nib and nib cap support formed, integral. and with the, nib .support` and .the .removable nib cap so contoured that .these partsarefpositively aligned upon assembly. Positive ,means are also provided for `locating and :retaining ;the-. nib upon its; supportin proper writing relation.

Further objects .are to .provide aconstructionzof maximum simplicity,` .efliciency, ...economy .and ease Vof assembly and operation,.and suchfurther objects, advantagesr and .capabilities as. willlater more fully appear. .and are y; inherently l.possessed thereby.

TheA invention further resides. in the construction, combination and. arrangement ofparts illustrated in the accompanying.. drawings.. and while there is showntherein. a preferred embodiment, it is to be understood that the. same issusceptible of modication and change, andwcomprehends Aother details, arrangements Aofparts, features and `constructions :without departing from the spiritof theinvention.

.In the drawings:

Figure lis a view inside elevation of aiountainpen embodying'the present invention.

-Figure 2 is -an enlarged longitudinal sectional viewwith apartin elevation of the pen and with the View broken to more clearly' illustratethe assembly.

"Figure 3 .isan .enlarged fragmentary view .of the kpen with the end cap or closure applied.y to protect the nib. Y

Figure .fi is a .view in .perspective .ofthe nibcap ory hood. v A

`Figure 5fis-` a fragmentary perspective v4view 2 showing the pen nibassembled on the nib support.

Efigure isv a, perspective view of the nib.

-Figure 'lis a .view similar to Figure 5 but With the pen .nib removed.

Figure 8 isa view similarto Figure 7 but with the .nibsupport broken away to show `the positioning vand assembly of the. air vent tube and thev slot to guide and receive the end yof 'the nib tail. spring.

Figure 9 is...anend View `of the nib end Aof .the pen with the nibcap removed.

. Figure. 10isv a .view in horizontal. crosssection takenfina plane .represented by the line l-l 0f Figure 2.

v.Referrngmore particularly to the -detaildisclosure` inthe drawings, the embodiment selected to illustrate .the invention comprises a barrel I havingl its cross section reduced to formstepped shoulders 2 and4 3 providing therebetween' anib cap `support and its forward end further reduced and contoured toprovide a nib support Il having its upper surface contoured to receive a pen nib 5. This combined lbarrel and nib andnib capsupportis formed integral and preferably.. molded of a -plastic y material, either Ythermoplastic or thermosetting, .although any material suitable for'the purpose vand having they desired physical properties, .may be used.

Y. As shownmoreclearly in Figures 2, 5, 7 .and 8, the end-of thebarrel formingfthe nib cap `support is .reduced in cross.. section and .provided with a sleeveV 6 formed of va suitable .non-corrosive vmetal such .as stainless steel or thelike. Thisreduced portion is also longitudinally slotted at 'L adjacent the shoulder. for receiving. a .tail spring tlformed or provided ati-.he inner end of -the pen nib A5. This -tail spring B locatesthe nibwhen it is directed into the slot 'l and. when the rear orinner end 9.of. the nib .abuts the shoulder 3, :pressingdownwardlylupon theforward yend. of f the .pen nib .causes this nib to tilt or pivotaboutthe4 end 9 until the nib` assumes the position shown in Figures 2 and 5, withthe oppositesides l i) of thev nib vsnapped .tightly over the curved uppersurface of the nib .support vand resiliently held thereon.

The nib supporti is providedwith a longitudinally extending channel .Il yopening into the barrelproper and a lateral ori-transverse passage I2 `opening intothe channelfor the..discharge of ink from .the .hollowinterior of the barrel, this channel `l l-beingof Asubstantially .keyhole shape` as shown. in V,liigure 10. with anAv air. .vent tube..|3 having its vlowerendlconformably-.seat

ing within the channel and suitably held in place as by means of cement or other adhesive. This provides an ink channel l of the desired size.

To permit removal or replacement of the pen nib, the invention contemplates use of a removable nib cap IS adapted to be quickly pushed on or slipped off of the nib and nib support and retained thereon by a friction fit upon the sleeve 6. This cap is so contoured and has a relatively tight t over the nib and its support whereby to maintain these parts in their proper aligned and writing relationship. It permits the removal of the cap before refilling the pen in order to prevent soiling of the pen section which is used for holding the pen when writing. After reiilling A of the pen, the nib cap is replaced and the pen is ready for use without the necessity of `first' wiping it clean.

In order to insure proper positioningr and alignment of the nib cap when replaced, this cap is provided with a positioning key or lug i8 (see Figures 2 and 10) adapted to enter the slot 'l of the reduced cross section and the aligned slot I9 in the adjacent end of the sleeve 6. As this key or lug in assembled relation is positioned adjacent to and forwardly of the nib tail spring, it prevents any outward or forward movement of the pen nib. Due vto the simple manner of removing this frictionally held cap and thereafter permitting the removal of the pen nib by simply lifting its forward end to disengage the sides l0 and then to withdraw the nib, it may be quickly replaced by inexperienced hands and without any further adjustment as heretofore required with prior types of pens. As previously stated, the nib tail spring 8 entering the slot or groove l accurately locates the pen nib, and by contouring the opposite sides or edges hl of the nib to substantially encompass and frictionally grip the nib support when it is snapped thereover as will be evident from Figure 9, assures proper contact between the top of the nib support and the inner surface of the nib and thereby prevents leakage therebetween.

The barrel I is connected to a resilient sack 2| by means of a tting or coupling 22 suitably joined by a press fit or otherwise secured in the upper end of the barrel and provided with a reduced upper end 23 to which the resilient or rubber sack 2i is cementedor adhesively connected. This fitting is preferably threaded at 24 to receive the threaded end 25 of a ller cap 2E. A pen cap, hood or closure 2l is providedfor protecting the pen nib when not in use, and which when the pen is being used, may be mounted upon the opposite end as shown in Figure 2. This pen cap or hood may be of metal or other material suitable for the purpose and is preferably provided with a resilient metal liner 23 having spaced annularly arranged indentations or detente 29 and 30 adapted to resiliently grip the barrel and thereby retained thereon.- To facilitate such mounting, the barrel is preferably provided with an annular recess or groove 3| adjacent each end thereof for receiving the indentation or detent 29 when the cap or hood is positioned upon either end of thegpen. A clip 32 is shown mounted on the hood or capt From the above description and the disclosure in the drawingsfit will be apparent that the present invention comprises a novel pen assembly provided with a removable nib cap as wellv as a readily removable and replaceable nib.

Having thus disclosed our invention, we? claim:

1. In a fountain pen, a nib and nib cap support,

an annular shoulder provided on the support, a forwardly opening slot provided in the support and extending rearwardly from the shoulder, 'a pen nib having a contour conforming to the contou-r of the support and its opposite sides embracing the support for detachably connecting the nib and support, and a tail spring projecting from the end of the nib adapted to enter the slot and t conformably therein for correctly locating the nib on the support and with the end of the nib adapted to abut the annular shoulder whereby to assure accuratevpositioning and alignment of the nib upon its support and permit its replacement.

2.` In a fountain pen, a nib and nib cap support, a forwardly opening slot provided in the support, a pen nib contoured in conformity with the contour of the support and with the opposite sides of the nib embracing the support for detachably connecting the nib to the support, and a tail piece on the end of the nib and projecting rearwardly therefrom adapted to enter the slot and confined therein against turning or lateral movement by the sides of the slot whereby the nib is accurately located on the support.

3. In a fountain pen, a barrel providing an ink reservoir, a nib and nib cap support at one end of the barrel, an annular shoulder provided adjacent the inner end of the support, a slot provided in the shoulder, a readily removable and replaceable pen nib having its opposite sides embracing the nib support and having a projecting part adapted to enter the slot and vconned by the Walls of the slot to thereby align the nib on the support, and a nib cap adapted to encompass the nib and support and frictionally retained thereon -to thereby retain the nib in proper position for writing, with the nib cap readily removable for replacement of the nib and when filling the pen.

4. In a fountain pen, an integral barrel and nib and nib cap support formed of a plastic material, the barrel having spaced offsets with one olfset located adjacent the support, a metalV sleeve encompassing the part intermediate the offsets, a forwardly opening slot formed in said part at the offset adjacent the support, a replaceable pen nib adapted to partially encompass and removably mounted upon the support and provided with a resilient projection adapted to enter the slot and engage the undersurface of the metal sleeve with 'the sides of the slot retaining the .projection against rotation and the end of the nib adjacent the projection engaging the last mentioned offset to thereby align the nib on the support, and a nib cap adapted to be readily slipped over the nib and support with its inner end Y abutting the other offset and frictionally retained on the metal sleeve. y

5. In a fountain `pen, a barrel having la niband nib cap support, a pen nib removably mounted on the nib support, a slot in thenib support, a projection on the nib adapted to be received in the slot and held against rotation by the sides of the slot, and a nib cap removably mounted on the nib ycap support and provided with a key adapted to be conformably received within the slot for proper positioningV and alignment of the nib cap when replaced upon its support.

6. In a fountain pen, a nib and nib cap support, apen nib removably mounted on the nibsupport, interengaging parts on the nib support and nib for aligning and positioning the nib on thersupport, a nib cap removably mounted on thernibpcap support and enclosing all but the writing point of the nib anda part on the nib cap adapted to interengage with the rst mentioned parts for locating and aligning the cap in its operative position and for retaining the nib in proper writing relation, said nib cap being readily removable for withdrawal or replacement of the nib and 4for filling of the pen.

HANS A. BAUER. FRED D. WOODS. GARFIELD L. BECKSTROM.

REFERENCES CITED The following references are of record in the flle of this patent:

Number Number Sweden 1921

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