US1851257A - Fountain pen - Google Patents

Description

March 29, 1932. E. LE BOEUF I 1,851,257

FOUNTAIN PEN Filed May 5, 1930 I VEN TOR.

ATTORNEYS.

'50. 1 This i ner ba r l 2, is Pr b of meta-1 Patented Mar. .29, 1932 EUGENE Ln Boner, or SPRINGFIELD, MASSACHUSETTS fountain pens and is directed more particu- FOUNTAIN PEN dl iplieati onsfi led'Iay 3,1936. .Serial Nd. 449,448.

"Ti-his invention relates toimproveme'nts in larly to fountain pens of the self filling type;

' The principal objects ofthe invention are. j a the provision ofa -pen' comprising vafnovel combination and arrangement of parts which net only aids in the produotionof a pen, at

provides a pen strucra neininal cost but which ttire that "is durable; strong easily operable andhas a pleasingiappearanceg r 1 The novel featuresand'advantages of the inventiioniwill be'observ'ed froin'the' followinvention.

ing description thereof in the fornrat present 4 preferred; which for purposes of, disclosure "are; llustrated 1n the accompanying draw;

in-gs; wherein:

Fig. 1 is aside elerational View of a foun tain pen embodying novel features of the Fig.2.is a moved. I 7 I I c Fig. 3 1s a sideelevatlonal vrewof the: pen

' with the barrel in open position and partially "may be of usual -f0rm-- to" secure the parts together and to facilitate theeasy and ready? shown in Section.

. Fig. l is aSectionaleleVational View the outer end of the-inner barrel; c

Fig. 5 15a perspective- V ew of the expansion ring, one of the details of constructionk Referring to the; drawings thenovel fear-- tures of the invention will now b'e described 'in detail.

-1 I'have vided with interfittingf screw threads which 2 separation thereof when it is desired to use point 8 and an ink feeding element 10 which;

or fill the pen.

' In Fig. 2 thecap is removed from the bar-. rel to show a pen holder 6'which carries a pen are arranged: in the regular manner. The

barrel 2 as distinguished from ordinary construction is movable towards and away from.

the holder. .To facilitate this the barrelis slidable on an inner barrel 12 which is secured to the holder 1n some suitable manner, such as by screw threads, as shown.

Similar View with the; cap re er aim- P 1 which includes abarrel 2 and ear 4'. The in: ner end ofthe barreland of the cap are pro? tubing suchas brass tubing and serves to receive an ink sack 18 as well as supports the outer barrel. The outer barrel is preferably provided wit-haninterior metallic lining .or

shell 14' which .slidably embraces the inner barrel" In the form ofthe invention shown the made of some'non-ine'tallic material such as H rubber, celluloid or the like while the inner barrel andslining areof inetal to facilitate.

-cap',"outer barreland holder are preferably;

accurate fitting of the relatively slidable parts and avoid excessive-wear; warping and the like.

The inksacl 18 is otj ie'ldable of resilient 1 material such as rubber and is secured to'the" inner-fend of the pen holder: to [extendlongitu'din'ally through the inner barrel.

The outer end of" the inner barrel is pro;

vided' with slits Such as 20 which are spaced therearound so. that the end portion may yield or eXpand against the lining of the outer barrel.

Anoutwardly extending bead 22 is pro- "ivided around the "inner barrel adjacent its H outer end and may be formed by'running {5a toolaround the inner side of the wall of 1 the barrel. Thislnakes an annular-groove around the inner wall of the barrel (see I 4:), which is desirable for the following-reason: I

An. annular ring member 24 of spring-like material bestsho'wn' in Fig; sis insertedin 'thei 'end of the inner barrel, This is split j longitudinallyas, shown and has ahead 26 therearound which fits within the annular groove inside the inner barrel whereby the member-.24 is held in place. "By being of spring-like Imjaterial 'and 'split as it, is, the ring2 tend's toexpand and yieldingly urge the split end oftheinner barrel against the lining of the outerba'r rel. A'tongue or keeper 1 28' carried byttheexpansion ringli and e'xtending inward'lythereof is received in an aperture at the outer end of apressurebar.

rests upon th'eink seal 18; This keeper holds the bar against appreciable" endwise movenients andyet allows the'pressure bar to be I Ofiwhich extends inside the inner tube and rearwardly of the inner barrel depressed inwardly to press the ink bag to deflate it.

A finger opening through the inner barrel and disposed over the pressure bar provides an opening through which a finger may be inserted for actuating the said bar.

As shown in Fig. 3 the barrel may be moved to expose the finger opening in the inner tube or barrel. This position of the barrel may be called its open position (as shown). A groove is provided around the lining of the outer barrel into which the head of the inner barrel is forced by action of the expansion spring. Thus as the barrel is pulled rearwardly of the inner barrel the head will be snapped into the groove and tend to lock the outer and inner barrels against further relative movements. Of course since the end of the inner barrel is yieldable against the action of the expansion ring the outer barrel may be pulled entirely oil the inner barrel but the snapping of the bead into the groove will warn against this and serve to stop the relative movement of the outer barrel to adequately expose the finger opening for the purpose of filling the pen.

As the outer barrel is moved forwardly of the inner barrel from the position shown in Fig. 3 to that shown in Fig. 2 or from a sack filling position to aolosed position the inner end of the outer barrel is disposed adjacent or against the inner end of the holder 6. This is desirable because the-inner barrel is completely enclosed and the holder appears to be integral with the inner barrel while the screw thread of the barrel is in suitable position for screwing into the cap.

To prevent relative rotative movements of the inner and outer barrels so as to not interfere with the screwing of the cap onto or oil of the outer barrel the said inner barrel is provided with a key 36 and the interior of the barrel lining with a longitudinal groove which is in sliding engagement with the key.

By providing an outer barrel which encloses the inner barrel and which is movable as a unit relative to the upper part or holder of the pen as distinguished from a barrel which is separable midway between its ends, the pen presents a pleasing appearance and is more easily and therefore more economically manufactured. In fact not only are the parts which operate for filling the sack concealed by this single barrel, but the barrel is easily movable to a position where the operating parts are readily accessible.

An opening rel is provided as a vent to relieve pressure which may be built up and depress the ink bag as the outer barrel is moved from the position in Fig. 3 to a closed position.

By providing a single barrel for completely bears a pleasing appearanceandsince the in the wall of the inner bar I filling parts are concealed thereby they are not likely to be caught by the parts of the clothing.

The expansive ring not only strengthens the outer end of the inner barrel, but functions to expand the same and cause the positive engagement of the bead of the inner barrel with the groove of the outer barrel.

end of said barrel for expanding the same,

an inwardly projecting part associated with one of said members receivable inthe apex-s ture of said presser bar to hold the same against axial movements and an outer barrel slidable on the inner barrel having an internal annular groove for receiving said bead.

2. A fountain pen comprising in combination, a pen holder having the inner end of an inner barrel member secured thereto which encloses a sack secured to said holder, 9.

presser bar in said barrel having an aperture in its outer end adjacent the outer end of said inner barrel member, the outer end of said barrel member being provided with longitudinal slots and an external annular bead, a ring-like spring member in the outer end of said barrel for expanding the same, an inwardly projecting part associated with one of said members receivable in the aperture of said presser bar to hold the same against axial movements, an outer barrel slidable on the inner barrel having an internal annular groove for receiving said head and the said barrel provided with an interfitting slot and projection to hold the same against relative rotation and to permit relative sliding movements thereof.

In testimony whereof I aflix my signature.

EUGENE LE BOEUF.

enclosing the inner barrel the pen as a whole

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