US2416770A - Fountain pen - Google Patents

Description

March 4, 1947. F MI P|5CULL| 2,416,770

- FOUNTAIN PEN Filed April 28, 1945 60a 6 f? 7m/z/ENfoR.

2/ Ff//W//vo M. /s can /I Patented Mar. 4, L1947 UNITED STATES PATENT OFFICE 2,416,770 lForiNTAIN PEN Ferdinand lM. Pisculli, Yonkers, N'. Application April 28, 194:5, Serial o. 590,799

(Cl. .1Z-47) 2 Claims.

This invention is a fountain pe'n of the type in which a piston or plunger is utilized to draw ink into an ink reservoir from an outside source.

One of the objects of the invention is to provide a fountain pen of the character mentioned in which the parts are so arranged that they may be readily disassembled for repair and cleansing purposes and which may be quickly and easily reassembled by the usel` A further object of the invention is to provide a plunger type fountain pen so constructed and arranged that the plunger may be quickly moved within the ink reservoir While lling the Vlatter or ejecting ink therefrom, A further object is to provide a pen of the type mentioned so constructed and arranged that the piston may be reciprocated' without the ynecessity of any portion of the piston stem being moved into or out of the pen barrel, so that the overall length of the pen remains unchanged during movement of said piston.

The invention will .be hereinafter fully set forth and particularly pointed out in the claims.

In the accompanying drawing- Figures l, 2 and 3 are longitudinal sectional views,l with parts broken away, illustrating details of a fountain pen constructed in accordance with the invention.

Figure 4 is a detail sectional view illustrating the pen barrel.

Figure 5 is a detail longitudinal sectional View illustrating the guide bushing and the anchoring plug.

Figure 6 is a detail sectional View illustrating the piston sleeve.

Figure 7 is a detail view illustrating the piston actuator stem.

Fig. 8 is an end elevatio-n of the actuator stem.

Referring to the drawing, l designates a tubular body which may be constructed of any desired material, but it is preferred to employ any one of the well known synthetic resins for this purpose, so as to combine lightness of weight with maximum strength. Said barrel provides an ink reservoir il, which is closed at one end by an integral pen-section i 2. Said extension is provided with a port i3 for conducting ink to the inl: feeding member I4, which projects from the outer end of the pen section l2, so as to supply the pen point I ii in the usual and well known manner.

Located within the barrel il! is atubular guide member I6, which is internally threaded at one end Said guide member is removably anchored within said barrel by means of a head Il, having a reduced threaded portion I 8 which extends into the adjacent end of said guide tube, andr engages the vinternalv threads therein. The body portion I8gt of said plug is of a size to frictionally 'fit within the adjacent end of the barrel Il), so as to rmly, but removably anchor vthe guide tube le in its proper position Within the barrehli. Said head also has an annular ange I'Ia which abuts the adjacent end of said barrel and has approximately the same outside diameter as that of the latter.

Slidingly mounted within the guide tube I6 is a tubular piston stem 2G, closed at one end as indicated at 2l, said closed end being that which is extended into the ink reservoir I l. The closed end 2| is provided with an opening, to accommodate the shank of a screw 22, which secures the piston head 23 to said stem. The bore 24 of the piston stem is provided with screw threads which are complemental to external threads 25 on an actuator stem 26, which latter extends through 'and is slidingly mounted in the anchoring head Ill'. The outer end of said actuator stem is provided with an enlarged head 2i, for convenient manual rotation of said stem. The complemental threads of the actuator stem and the piston stem are preferably of such pitchvas to cause quick travel of the piston stem and its piston, in either direction by slightA rotative movement of the actuatr stem. The head I'I and the actuator stem 26 are normally held against separation by means of a stop pin 28. If desiredan end cap 29 of the usual type may be empioyed, which may be se-r lectively engaged with the head Il of the pen section I2. For example, the pen section I2 may be provided with external screw threads which are complemental to an internally threaded portion of the cap 29, so as to safely cover the pen point,`said cap having an edge portion extended beyond its threaded portion to frictionally engage the flange I'I.

In practice, when it is desired to fill the ink reservoir II, the head 27 is manually rotated in the direction to cause the piston, due to the reaction of the threaded engagement of the piston stem and the actuator stem, to move toward the pen section. The stem 26 is held against axial movement by the pin 28. The pen section is then dipped into an inkwell or other suitable reservoir, and then by reversing the rotation ofthe head 21, the piston will be moved inwardly, drawing in ink with it. This reverse movement is arrestedk by the pin 28 when the reservoir has received the proper amount of ink and before the piston head may jam against the head I1. The

pen will then be ready for use. In this connectional engagement with tion it is to be understood that in Figures 1, 2

VVa piston type fountain pen is provided which is constructed of fevvvparts, all of Which are so arranged that the pen may be assembled or disassembled by its user, Without the necessity of calling upon expert aid for the purpose. An-

other advantage is that a quick acting piston is provided, and the necessity of having a piston stem which must reciprocate in and out of an end of the pen barrel is avoided.

Having thus explained the nature of the invention and described an operative manner of constructing and using the same, although without attempting to set forth all of the forms in which it may be made, or all of the forms of its usei whatl is claimed is: Y

1. A fduntain pen of the character described having in combination a tubular barrel providing an ink reservoir, a pen section closing one en d of said barrel and in communication with said reservoir, a tubular guide member located within and slidingly engaging said barrel in spaced relation with respect to said pen section, said guide member being internally threaded at one end, an anchor` head having sliding fricthe interior of the barrel andprovidedv With a -reduced threaded portion removably engaging the threaded portion of said guide member, a tubular piston stem slidingly mounted within said guide and having a piston head located Within said reservor, and an actuator stem rotatively mounted Wtihin said head and telescoping With said piston stem, Vsaid ac- Number NameY Date 2,128,052 MacNally i Aug. 23, 1938 1,706,616 Kovacs Mar, 26, 1929 Y FOREIGN PATENTS 40 Number Country Date 661,729 German 1938V 543,648 GermanV 1932 Yclose theV opposite end tuator stem and said piston stem having coniplemental means for imparting axial movementsr to said piston stem While the actuator stem is being rotated.

2. In a fountain pen, a tubular barrel providf ing an ink reservoir, a pen section at one end of said barrel communicatingwith said reservoir, a tubular guide member snugly engaged Within said barrel having one end spaced from said pen section, an internal thread at the opposite end of said tubular guide member, an anchor head to of said barrel and said tubular guide member, a reduced annular threadedportion on the inner end of said head to engage with the threads of said tubular guide mem'- ber, an annular shoulder adjacent to said threaded portion abutting Vthe adjacent end of said guide member and frictionally engaging Within the barrel end, said anchor head having an axial opening therein, a tubular piston slidingly engaging Within said tubular guide member and having one end disposed in said reservoir, threads on the interior surface of said tubular piston, and a threaded actuator stem rotatably mounted Vin the axial opening in said anchor head with its threads engaged with the threads of said tubular piston.

FERDINAND M. PISCULLI.U

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

UNITED STATES PATENTS

Images