US1117469A - Fountain-pen. - Google Patents

Description

FOUNTAIN PEN.

APPLICATION FILED APB..21, 191

Patented Nov. 17, 191 1 UNITED STATES PATENT OFFICE.

ORRIN G. WISEMAN AND EARL R. GEORGE, OF DES MOINES, IOWA.

To all whom'it may concern:

Be it known that we, ORRIN G. WISEMAN and EARL R. GEORGE, citizens of the United States, and residents of Des Moines, in the county of Polk and State of Iowa, have invented a certain new and useful Fountain- Pen, of which the following is a specification.

The object of our invention is to provide a fountain pen of simple, durable and inexpensive construction of the self filling type. More particularly, it is our purpose to provide a fountain pen of this type provided with means whereby a vacuum may be created and so constructed that the creation of a vacuum directly draws ink into the pen barrel so that the pen barrel is filled gradually as the vacuum is created therein.

Still a further object is to provide a pen of this type in which is mounted a plunger, and provided with an intake pamage opening at its upper end into a pen barrel, and so arranged that the plunger may be ushed from the upper to the lower endof t 1e pen for filling the barrel, and so arranged that the plunger will remain at the lower end of the pen-after the pen has been filled.

Still a further object is to provide in a pen of the kind mentioned, means for closing the lower end of the intake passage after the pen has been filled.

Our invention consists in certain details, in the construction, combination and arrangement of the various parts of the device whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in our claims and illustrated in the accompanying drawings, in which:

Figure 1 shows a central, longitudinal,

sectional view through a fountain pen embodying our invention. Fig. 2 shows a vertical, transverse, sectional view taken on the line 22 of Fig. 1. Fig. 3 shows a similar view taken on the line 33 of Fig. 1, and Fig. 4 shows a detail, se'ctionalview, taken on the line 44 of Fig. 1.

In the accompanying drawings, We-have used the reference numeral 10 to indicate a hollow pen barrel which may be of ordinary construction except in the particulars hereinafter set forth. The pen barrel 10 is preferably made with the wall at one side thicker than the rest of the wall, as clearly shown in Figs. 2 and 3 and we provide a longitudinal ink intake passage 11 in the Specification of Letters Patent.

Application filed April 21, 1913.

Patented Nov. 1'7, 1914.

Serial No. 762,732.

thick portion of said wall- At its upper end the intake passage 11 communicates through the opening 12 with the interior of the pen barrel. The upper end of the pen is externally screw threaded to receive a short cap 13. Mounted in the pen barrel is a plunger 14 to which is secured a stem 15 which extends through the upper end of the pen and is screwed into the cylindrical body 13 loosely received in the outer end of the cap 13. In the lower surface of the plunger 14 is a slot to receive a screw driver for holding the plunger when attaching the stem 15.

We preferably enlarge the opening around the stem 15, at the upper end of the pen barrel, and surround the stem for a short distance with packing 16 which is held in position by a screw threaded plug 17. The plug 17 may be readily removed for placing new packing in the pen, should that be desired by a screw driver inserted in a slot in its outer end. The lower end of the barrel'10 is internally screw threaded to receivethe body or section 18. The upper'end of the section 18, at 19, is concave, as shown in Fig. 1. The lower end of the body 18 is provided with an opening 20 to receive the feeder 21. The opening 20 is preferably somewhat smaller in diameter at its inner upper end than at its outer end and the feeder 21 is preferably somewhat smaller at its upper end than at its'central portion so that it may be wedged into the openlng .40 for gripping the point 22 between the body 18 and the portion 21, asshown in Fig. 1. The feeder 21 is provided with a groove 23 adjacent to the pen point 22 and extending to the upper end of said portion 21, for the purpose of permit-ting ink to flow downwardly to the pen. The upper surface of the upper end of the portion 21 never engages the body 18 at the upper end of the opening 20. This construction is adopted for the purpose of permitting a free flow of ink. From the upper end of the opening 20 a smaller passage 24 extends to the upper end of the section 18. Formed in the section 18 is a passage 25 communicating at its upper end with the lower end of the passage 11 and communicating at its lower end with the opening which receives the member 21. In the member 21 is a passage 26, which, when said member is installed in position in the pen, communicates at its upper end with the lower end of the passage 25 and is open at its lower end at a point above the lower endof the feeder 21.

Slidably mounted on the surface of the portion 21 is a cover 27 arranged in one position of its sliding movement to close the.

lower end of the passage 26. The cover 27 is provided with a narrow flange 28 for convenience in sliding said cover. In the lower end of the pen barrel, on the interior thereof, are a plurality of vertical grooves 29, which are a trifle longer than the thickness of the plunger 14 and are designed to permit ink to flow around said plunger when the pen is in use.

In the practical use of our improved fountain pen the parts are assembled in the positions shown in Fig. 1. The sliding cover 27 is then moved downwardly until the lower end of the passage 26 is opened. The cap 13 is then drawn upwardly until the plunger 14 is drawn to the upper end of the pen barrel. The lower end of the pen is then inserted into any ordinary ink container until the lower end of the opening 20 is submerged in the ink. The plunger 14 is then forced downwardly, thereby creating a vacuum in the upper end of the pen barrel and drawing ink upwardly into the pen barrel through the passages 26, 25, 11 and 12. When the plunger 14 has reached its lowermost position, the sliding cover 27 is moved upward to cover the lower end of the opening 26 and the pen is ready for use.

With practically all of the fountain pens of the self filling type, now in use, it is found that only a comparatively small quantity of ink can be drawn into the pen barrel. This objection is a serious one in so much as the amount of ink that can be carried is, on account of it, small and the pens require frequent refilling and are frequently empty when needed.

With our device, constructed as above de scribed, we are able to fill practically the entire reservoir. We are aware that pens of the plunger type have been used and patented but they usually employ a construction wherein the stem of the plunger is at its outer and forward limit of movement when the pen is filled, thereby requiring a long and awkward cap to cover the plunger stem. We have found that we can get into our pen about twenty more drops of ink than can be drawn into any other self filling pen of the same maximum reservoir capacity. On account of the use of the slidquickly and easily assembled. It will be understood that variations may be made in the details of the construction of our pen and it is our intention to cover by this application any variations in such construction which may be included within the scope of the following claims.

We claim as our invention:

1. A self filling fountain pen comprising a barrel formed with a central reservoir and having a small intake passage extending from the lower end of said barrel to a'point near its upper endand communicating near the upper end of the barrel with the main reservoir, a plunger mounted in .said main reservoir, a .stem thereon extending through the upper end of said stem barrel, a section screwed into the lower end of said barrel and havin a recess in its lower end to re ceive the eeder and an opening extending from said recess to its upper end, a feeder received in said recess, said section being arranged in one position of its'movement to cover the lower end of said last named passage.

2. A self filling fountain pen comprising a barrel provided with a small intake passage leadin from the lower end of the barrel to a point near its upper end and communicating with the interior of the barrel at its upper end, a plunger mounted for reciprocation in the barrel below the upper end of said intake passage, a stem on the plunger extending through the upper end of the barrel, said barrel being provided with an interior longitudinal groove at its lower end to permit the passage of ink past the plunger when the latter is in the lower position of its movement, and adjustable means for preventing ingress or egress from said intake passage.

ORRIN G. WISEMAN.- EARL R. GEORGE.

Witnesses:

S. ROBINSON, M. WALLACE.

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