US2474996A - Fountain pen - Google Patents

Description

July 5, 1949. F. B. WALLIIS FOUNTAIN PEN Filed on. 12. 1945 (by 3 M9405 7/V44 /n fora I all shank of the writing point is of tubular formation to envelope either the pen section or an element detachably engaged with a section or barrel of the fountain pen.

It is also an object of this invention to provide a fountain pen of the above-indicated type in which the writing point of the unit is reinforced at the tubular shank portion thereof by a member which connects the writin point to a holder of the fountain pen.

It is a further object of this invention to provide a fountain pen of the hereinabove referred to type which is relatively inexpensive to manufacture, is simple and efioient in operation and is durable. 1

Other objects and' advantages of this invention I will hereinafter be more particularly pointed out and for a more complete understanding of the characteristic features of this invention, reference may now be had to the following description when taken together with the accompanying drawing in which latter:

Figure 1 is a longitudinal central sectional view partially in elevation of a fountain pen embodying the features of this invention.

Fig. 2 is an exploded side elevational view of the elements of the writing point unit, and

Fig. 3 is an enlarged central longitudinal sectional view of the pen unit showing the parts of Fig. 2 in an assembled relation.

Referring now more particularly to the draw-- ing, the present invention is shown as being embodied in a fountain pen comprising a barrel It having an open counter-bored reduced and l l for receiving an extension I2 of a pen section It, the

barrel and pen section when assembled being usually referred to as the holder.

The barrel l and the pen section it are preferably formed of plastic material, although, of

course, it is to be understood that any rigid material may be employed in lieu thereof. The pen section 13 is provided with a band Ill fixedly secured thereto in any suitable manner, the band being preferably of metal and being provided with threads for detachably engaging threads adjacent the open end of an inner cap l5 housed in a pen cap IS. The inner cap I5 is preferably formed of silver or a nickel alloy or any material that is not aversely affected by writing fluids, and pen cap I6 is formed of gold-filled stock or of a ma-' terial that has good appearance value. However, the above materials are specified merely for purposes of illustration and plastic, stainless steel, or any other well-known material may be substituted therefor. The filling mechanism is of the so-called plunger type and is shown merely for purposes of illustrating a completed article and since no claims are made in this application to the novelty thereof, a description thereof is believed unnecessary since the showing is selfexplanatory.

A tubular sleeve ll, referred to hereinafter, in the claims as a plug or an apertured plug, telescopically engages the bore of the pen section IS, a portion at the forward end extending beyond the end of the section. Referring more particularly to Fig. 2 of the drawing, the plug l'l will be noted as having an external portion threaded substantially its entire length, there being a shoulder 18 intermediate the ends thereof dividing the threads into portions I9 and 20. The threaded portion 20 engages cooperating threads in the bore of the section I3, the end of the section l3 abutting against the shoulder [8 as seen more particularly in Fig. 3.

A writing point 2| has a tubular shank portion 22 for receiving in the bore thereof a sleeve 23 which is soldered, bonded or otherwise secured thereto. The tubular shank 22 of the writing point 2| is preferably longitudinally tapered to fit a longitudinally tapered peripheral surface of the sleeve 23. The portion of the writing point 2| extending from the tubular shank portion thereof overlies in its longitudinally tapered direction a substantially conical-shaped head of a feed bar 24. A reduced extension 25 of the substantially conical-shaped head 24 of the feed engages the bore 26 of the apertured plug H. The feed is provided with the usual combs 21 which extend laterally of the feed and of the communicating longitudinally extending fissure 28 for controlling the flow of fluid from the reservoir in the barrel II] to the writing point 2 I.

The sleeve 23 is internally threaded for engagement with the threaded portion IQ of the apertured plug l1 and when in position thereon, the end of the tubular shank of the writing point engages the shoulder iii of the plug so that preferably the writing point and the section l3 may be substantially continuous. The sleeve 23 is preferably formed of silver, plastic, or any material that has no deteriorating effect on the writing'fluid or which is not attacked thereby.

The sleeve 23 is held in position in the tubular shank portion'of the writing point by solder or any suitable bonding material or by spurs or other means that-may be extended from the writing point into the' material of the sleeve. Such means are not shown since an infinite variety of means for securing these two members against relative rotation and against displacement may be employed aside from the usual bonding above described.

While but a single embodiment of this invention is herein shown and described, it is to be understood that various modifications thereof will be apparent to those skilled in the art and this information therefore is to be limited only by the scope of the prior art of the appended claims.

I claim:

1. In a fountain pen including a holder, a writing point unit comprising a plug for detachable connection with said holder, said plug having an externally threaded end. a writing point having a nib portion and a tubular shank portion, and an internally threaded sleeve having the external peripheral surface thereof fixed to and being fitted within the bore of said tubular shank portion, said sleeve threadedly engaging the threaded end of said plug for positioning said nib relative to said holder.

2. In a fountain pen including a holder, a writing point unit comprising a plug for detachable connection with said holder, said plug having an externally threaded end, a writing point having a nib portion and a tubular shank portion with a longitudinally tapered bore, and an internally threaded sleeve having an external peripheral surface corresponding to said tapered bore and being fixed therein, said sleeve threadedly engaging the threaded end of said plug for positioning said nib relative to said holder.

3. In a fountain pen including a holder, a writing point unit comprising an apertured plug for detachable connection with said holder, said plug having an externally threaded end, a feed having a portion fitting in the aperture of said plug and having an extending portion, said extending portion having a longitudinally tapered peripheral-external surface, and a writing point having a nib portion and a tubular shank portion, said nib portion conforming to and overlying said longitudinally tapered peripheral external surface of the extending portion of said feed and said tubular shank portion being internally threaded for engaging the externally threaded end of said plug for positioning said nib relative to said holder.

FRANK B. WALLIS.

REFERENCES CITED The following referenlces are of record in the file of this patent:

6 UNITED STATES PATENTS Number Name- Date 1,355,013 Swaine Oct. 5, 1920- 1,615,980 Holmes Feb. 1, 1927 1,989,220 Weigel Jan. 29, 1935 2,012,722 Krause Aug. 27, 1935 2,303,373 Martin Dec. 11, 1942 2,375,770 Dahlberg May 15, 1945 OTHER REFERENCES Ser. No. 421,061, Kovacs (A. P. C.) pub. May 11, 1943.

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