US1427711A - Fountain pen - Google Patents

Description

G. BARTLE, S. GLICKMAN, AND L. JACOVITZ.

FOUNTAIN PEN.

APPLICATION FILED JULY 19,1921.

Patented Aug. 29, 1922.

UNITED, STATES PATENT OFFICE.

GEORGE BARTLE, SAMUEL GLICKMAN, AND LEON JACOVITZ, OF NEW YORK, N. Y.

FOUNTAIN PEN.

To all whom it may concern Be it known that we, GEoRGE BARTpn, SAMUEL GLICKMAN, and LEON J Aoovrrz, citizens of the United States, residing at New York city, in the county of New York and State of New York, have invented new and useful Improvements in Fountain Pens, of which the following is a specification,

This invention relates to reservoir pens and has for one of its objects the provis on of a pen of the character described in which ink is drawn into a reservoir by reciprocation of a plunger without necessitating the use of valves. I

Another object of the invention is the provision of a reservoir pen in which a plunger chamber is provided within the ink magazine the forward end of which 1s vented to the atmosphere and closed from communication with the ink magazine so that the forward face of the plunger does not at any time come into contact with the ink, thus to avoid .weeping of the pen at the vent aperture which is a defect of other pens of the plunger type.

Another object of the invention is to provide a reservoir pen in which ink is fed through a nib to the ink magazine, the vent for the plunger opening to atmosphere at a point on the pen barrel'remote from the nib so that the vent will not be submerged in the ink supply when the nib is dipped therein for the purpose of filling the pen.

With the above and other objects in view, our invention consists in the improved reservoir pen illustrated in the accompanyin drawings, described in the following specifi cation, and particularly claimed, and in such variations and modifications thereof as will be obvious to thoseskilled in the art to which our invention relates. Y

In the drawings accompanying and forming a part of this specification, and wherein the preferred embodiment of our invention is illustrated Figure 1 is an elevation of our improved reservoir pen partly broken away showing certain details in section.

Figure 2 is a sectional elevation of the same.

Figure 3 is a cross sectional View taken along the lines 3-23.01 Figure 2 viewed from above.

1921. Serial No. 485,874.

Figure 1s a cross sectional view taken along the lines 4-4 seen from below.

Figure 5 1s a plan view of the cap with the metallic top removed.

In the drawings the numeral 1 represents the body of the pen which is tapered at its lower extremity 3 to provide a finger hold and threaded at 4 for the reception of the cap 29. The upper part of said body is turned down to two diameters the part of larger diameter forming the shoulder 5 against which abuts the lower end of the barrel 6 and the part of smaller diameter constituting a boss 7 exte'riorly threaded as at 8 for engagement with the interiorly threaded end of the barrel 6. Extending longitudinally of'the body substantially throughout the length of the hollow portion of the barrel, and preferably integral with said body is a cylindrical tubular extension 9 forming a plunger chamber in which reciprocates the plunger 10. The space hetween the outer wall of the inner tubular extension and the inner wall of the barrel forms an annular ink reservoir, with which the inner tubular extension is in communication at its upper end this being the only avenue of communication between said extension and the ink reservoir.

The body lis axially recessed at its lower end at 26 for the reception of the feed device 11 between which and the inner wall of said recess is held the nib 12. A partition v25 exists between the plunger chamber and the recess 26 which is imperforate as to said device 11, the latter being of tubular form with a closed bottom, filling tightly within the lower portion of the recess 26.

The upper end of the barrel 6 is closed and is exteriorly reduced in diameter forming a boss 16- which is threaded to receivea similarly threaded recessed member 17. The plunger is provided with an operating rod 18 which extends through a bore 23 in the closed end of the barrel 6 and is rigidly secured to the member 17 in any suitable manner."

' The boss 16 is counterbored forming a stufling box in which rests a quantity of rings 21 which engage the inner walls ofthe plunger chamber in fluid tight relation thereto. The operating rod 18 of the plunger is hollow for at least that'portion of its length adjacent its outer end and is adapted to contain a pencilofgraphite or other solid marking substance. The end of said hollow portion is split at 21 said split portions cooperating with the inner con- ..the dotted line position of Fi verging surface ofa tapered nut '22 as a chuck to hold the graphite pencil securely in lace.

he nut 22 is threadedly connected to the boss 28" on the member 17, said connection servin as a means for adjusting the tightness o the split portion 21 of the hollow rod against the pencil. The upper end of member 17 is threaded for the reception of the cap 29 which may be used interchangeably upon the other end of the pen according to which end of the latter is in use.

The cap is provided in its annular wall with. a series of longitudinally bored holes 30 forming a magazine for spareleads. cess to the magazine is had by unscrewing the metalliclidBl which forms the top of the cap.

In operation to fill the pen the plunger is first drawn out by grasping the member 17 and pullingit outwardly as indicated in re 2 which shows the parts midway of t eir outward movement.

When the plunger has reached its outmost position, an amount of air will have been displaced through the new empty ink reservoir equivalent to the capacity of the plunger chamber. The pen is dipped in ink until the hole 13 in the nib 12 is submerged. Then the plunger is depressed creating a suction in 1ts rear which draws the ink up from the supply source through the holes 13 and 14, past the feed 11, the recess 26, the aperture 28 and into the inkreservoir.

It is apparent that the forward end of the plunger chamber which ventsto the outside of the pen by means of the passage 15 is always free from ink and there is consequentl no leakage through said vent after filling t e pen.

. It is likewlse obvious that no valves are the pen with the point up while drawing out careless handling that said vent will be submerged in the ink when the pen is filled.

By designing the pencil holder as part of the rod which operates the plunger we have devised a simple neat and inexpensive means by which both pencil and reservoir pen are combined in one construction.

It is obvious'that the specific details of construction and configuration of parts described herein ma be modified in various ways without sacrificing the advantages of the invention or departing from the scope thereof as defined in the-appended claims.

Having described'our invention what we claim as new and desire to secure by Letters Patent, is

'1. A reservoir pen comprising a body provided with a. longitudinal tubular flange forming a fluid displacement chamber, a barrel surrounding said flange forming with the latteran ink reservoir, said flange terminating short of'the upper end of said barrel to afford unrestricted communication between the upper end of said displacement chamber and said ink reservoir said displacement chamber communicating at its lower end with the-atmosphere, a plunger in said chamber and means extending to the exterior 100 of said pen for operating said plunger.

2. A reservoir pen comprising a body provided with inner and outer tubular extensions separated by a partition, a barrel closed at one end secured at its other end to. said 105 body, whichsurrounds the inner tubular extension forming therewith an ink reservoir, said tubular extension being in communication at its upper end with said ink reservoir, said partition being provided with a passage 110 communicating with the atmosphere and with said inner tubular extension and another passage communicating with said outer tubular extension and said ink reservoir and a plunger operating in said inner tubular 115 extension. y

3. A reservoir comprising a body provided with inner and outer tubular extensions separated by a partition, a barrel secured to said body surrounding the inner tubular extension and forming therewith an ink reservoir, said partition being provided with a passage communicating with the atmosphere and-said inner extension andanother passage communicatin with said outertubular extension and said ink reservoir.

4- A reservoir pen comprising a barre portion including coaxial cylindrical walls,

constituting a plunger chamber and an ink reservoir, plunger chamber and 111k res- 13 ervoir communicating at their upper ends, the plunger chamber opening at its lower end by an unbent passage directly to the atmosphere, and a plunger operable in said plunger chamber.

5 A reservoir pen comprising a body hav ing a longitudinally extendin peripheral flange forming a barrel, a tubular extension within said barrel constituting a plunger chamber spaced from the barrel to form an ink reservoir therebetween, said plunger chamber and ink reservoir communicating only at their upper ends, the lower end of said plunger chamber opening directly to the atmosphere by an unbent passage, and the lower end of said ink reservoir communicating with an ink inlet and a plunger operable in said plunger chamber.

6. A reservoir pen comprising a body provided with inner. and outer tubular extensions separated by a partition, a barrel closed at one end secured at its other end to said body, which surrounds the inner tubular extension forming therewith an ink reservoir, said tubular extension being in communication at its upper end with said ink reservoir, said partition being provided with a passage communicating with said inner tubular extension and with the atmosphere at a point remote from the nib of said pen and another our hands in presence of two subscribing witnesses.

GEORGE BARTLE. SAMUEL GLICKMAN. LEON JACOVITZ. Witnesses:

ANTHONY ToMuAsULo, PAUL ALMAsHANo.

Images