US1809992A - Fountain pen - Google Patents

Description

June 16, 1931. o. J.- suN'Ds-rRAND FOUNTAIN PEN Filed March 30t 1925 T. x ev www/ A 4,

HCL, Mw

. conveniently iny which my invention is incorporated. p

vention described herein.

Patented June 16, 1931 UNITED STA incassi 'rss PATENT olf-frlcfrii,

FOUNTIN PEN Appiation filed Malen so, 1925. semi No. 19,209.

.This'invention relates to improvements in fountain pens. u Y

A disadvantage of the fountain pensof the types now in general use is the lack of a pre liminary warning that the pin is .almost emp ty. No indicationof the necessity for refilling is given the user until the ink is complete ly exhausted. This. Vrcauses vgreat inconvenience to the user especiallyifmeans yfor re'- filling are not immediately at hand.

Onev object of this invention is-to provide means which indicate when refilling` is' required before the' ink'in vthe pen is complete-y ly exhausted. v c v, lAnother object is to provide a reserve supply ,of ink which is available after the preliminary indication that refilling is required.v

Another object is-to provide. simple and operable means to allow a vreof ink to How to the penpoint. r

In the accompanying drawings, Figure 1 is a longitudinal view of; a fountain pen of the .selfhlling type (wththe capremoved) serve supply Fig. 2 is a longitudinal sectional view of the lower portion ofthe same type of foun-k tain pen `showing the normal internal arrangement of parts with the form of `my in- Fig. Sis a view similarl toFig. 2 showing the internal arrangement of parts lwhen communication reservoir tand the pen point.

Referring tothe accompanying drawings the'A fountain pen to which my vinventrior'i lis e herein shown applied comprises'preferably' a' attached at i'tsfopen or 'lower' end'a suitablesl'eeve or/feedingfplug 2theu upper portion .3` of said plug barrel 1 having forming iny this the lower side lwalls,

embodiment v 4 y Attached to the upper portion 3 reservoir 4.

of the plug 2is a suitable inkds'ac which. Y n forms-` the upper sidewalls'and top of the ink reservoir 4,

and a nib 0r pen Point2@ ,Said pen nolltbe-y ing` commonly inserted between the vplug .2

and said feed b`ar andthereby effectively sup,- ported. The feed bar 6 contains a longitudi- Fig. 2by

is established between the reserve ttached ,withinA the-plug `2 is nal bore8 which at its lower end opens into agrooveQ.v Y Y i In this bore 8 and groove 9 is slidably' f mounteda stem 10 which extends upward out of the bore 8 into the ink reservoir 4. rllhis stemlO'is provided with a duct 11 openg.l ing at the top of said stern to form anormal voutlet 12 within the ink reservoir 4 and ata distance above the bottom of x said ink reservoir.. The portion ofthe ink reservoir below this normal outlet 12 forms a reserve inlrreservoir 13. The duct 11 atits lower end opens into a chamber 14y formed between a notch .15

in the stem 10 and the walLof the bore 8in the feed bar 6. From this chamber 14 aniink,l discharge duct 16 through the feed bar 6 feeds the pen point 7. a

Ashort distanceabovegthe in the;

stem 10 is* an annular. collar 1f? 4beveled on its` under side toform a valve memberA 18, said bevel corresponding yto the bevel yof ,aivalve seat 19 in the top of the feed bar 6 at .the en ytrance to thebore 8. Anauxiliary youtletto. the ink reservoir 4 is thereby provided in the,

and is in use, the stem 10. being in its-,normal `or lowermost position as in Fig. 2. lnlrflows from the ink reservoir 4 by gravity. through the normal outlet 12, the duct 11, the chamber 14 and the duct 16, to the penpoint ,7. When the' ink level in theinlr reservoir 4 dez clines'to the plane of the normal outlet 12 the supply of'ink is cut off, the pen point,becoml Ving dry.when thefiow. from thefducts 11 andv 16 and the chamber 14 has ceased. If inconvenient, to refill the pen at this time they ink .in the reserve reservoir 13 below the normal' outlet 12 can be made available at the pen point 7 by sliding the stem l() upward and thereby raising the valve member 18 which normally closes the auxiliary outlet 2O of the ink reservoir 4. Convenient'means for the operation of the stem 10 is provided in the notch 2l as hereinbefore mentioned. Ink is thereby provided for immediate use to tide the user over until he can conveniently refill the pen.

Thus I have combined in a fountain Vpen means to reserve a vsupply of inl; which is available after an indication has been given that filling is required and simple and effective means for making this reserve supply of ink available at the pen point.

Although I have shown my invention in a particular form and as embodied in the type of fountain pen commonly known as selffilling, I have done so for purposes of description only. VVMy invention is capable of embodiment in various forms and in other types of pens, and therefore I do not wish to limit its scope other than by the appended claims.

I claim as my invention:

1. A fountain pen having, in combination, an ink reservoir, a feed bar, a pen point, said feed bar having a longitudinal bore opening` into said reservoir to provide an outlet therefrom, said feed bar also having an inlr discharge duct leading from said bore to said pen point, a stem slidably mounted in said bar, said stem having thereon a collar forming a valve member to close said outlet, said stem also having a duct leading from the upper end of the stem to a point below said valve member and arranged to communicate with said ink discharge duct, the lower end of said stem being exposed upon the lower portion of the feed bar and said exposed portion being shaped for engagement by Jdie linger of the operator whereby the stem may be slid to seat and unseat said valve member.

2. In a fountain pen having, in combination, an ink reservoir, a feed bar, a pen point, said feed bar having a longitudinal bore opening into said reservoir to provide an outlet therefrom, said feed bar also having an ink discharge duct leading from said bore to said pen point, a stem positioned in said bore normally closing said outlet and extending into said reservoir, said stem having a duct leading from a point above the bottom of said reservoir to said inl discharge duct, Said stem being movable to open said outlet and establish communication fronrthe bottom of said reservoir through said outlet to said ink discharge duct.

3. A fountain pen having, in combination, means forming an ink reservoir, a feed bar, a pen point, said feed bar and said pen point being mounted t-o close the lower end of said reservoir, a member movably mounted in said feed bar to establish communication between said reservoir and said pen point, said member being arranged to provide two inlets at different levels in said reservoir and being further arranged to close the lower inlet in one position of said member.

il. In a fountain pen, a main ink supply chamber, a reserve inl supply chamber in open communication at its upper end with the lower part of the main ink supply chamber, ink feeding means in communication with the lower part of the main inlr supply chamber and also in communication with the lower part of the reserve ink supply chamber, and means operable to prevent or per mit flow of ink from said reserve supply chamber into said ink feeding means as desired,

5. A fountain pen comprising a barrel open at the normally lower end thereof, a main ink supply chamber within said barrel, said main inlr supply chamber being open at its lower end, an ink feeding plug` fitting in the lower end portion of the barrel and having a portion fitting in the open lower end of the main ink supply chamber, said ink feeding plug having an inlr feeding passage extending longitudinally of the plug for conducting ink from said main supply chamber through said plug, said plug also having a reserve ink supply chamber formed therein, said reserve supply chamber being in open communication at its upper end with said main ink supply chamber and having a relatively small orifice connecting the lower part of the reserve supply chamber with said ink feeding passage, and means for controlling said orifice.

6. A fountain pen comprising a barrel open at the normally lower end thereof, a main ink supply chamber within said barrel, said main ink Supply chamber being open at its lower end, an ink feeding plug fitting in the lower end vportion of the barrel and having a portion fitting in the open lower end of the main inlr supply chamber, said inl feeding plug having an ink feeding passage extending longitudinally of the plug for conducting ink from said main ink supply chamber through said plug, said plug also having a reserve inl: supply. chamber formed therein, said reserve ink supply chamber be'- ing in open communication at its upper end with said main inlr supply chamber and having a relatively small orifice connecting the lower part of the reserve supply chamber with said ink feeding passage, and a manually Operable valve within said reserve inlr supply chamber for controlling said orifice.

7. A fountain pen comprising a barrel open at the normally lower end thereof, a main ink supply chamber within said barrel, said main ink supply chamber being open at its lower end, an ink feeding plug fitting in the lower end portion of the barrel and having a portion fitting in the open lower end ofthe main ink supply chamber, said ink feeding plug having an ink feeding passage extending longitudinally of the plug for conducting ink from said mainy ink supply chamber through said plug, said plug 5 also having a reserve ink supply chamber formed therein, said reserve ink supply charnber being in open Communication at its upper end with lsaid main ink supply chamber and having a relatively small orifice connect- 10 ing the lower part of the reserve supply chamber with said ink feeding passage, a slide valve within the lower part of said reserve ink supply chamber movable to and from position to cover said orioe, andan operating 1fhandle for said valve, said handle extending slidably in an opening in the lower portion of said ink feeding plug. 8. In a fountain pen, a main ink supply chamber, means for feeding ink from the v 20 main ink supply chamber to the nib of the fountain pen, means normally forming an auxiliary chamber arranged for receiving inlr from said main inl: supply chamber so long as any ink remains in said main ehamg5 ber, and means for releasably holding said ink against passage through said ink feeding means comprising a valve member having a stem extending longitudinally in said feeding means and having a projecting portion 3o arranged for engagement by the finger of an operator.

9. A fountain pen having, in combination, an ink reservoir, a feed bar, a pen point, means forming an outlet duct communicating 33 with said reservoir at a point above the bottom of the latter and arranged to feed ink to the pen point and a valve to control the flow of ink from the bottom of said reservoir 'to the pen point.

,lo In testimony whereof, I have hereunto af- A fixed my signature.

OSC J. SNDSTRAND.

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