US2495080A - Feeding mechanism for fountain pens - Google Patents

Description

Jan. N, 1950 M. H. STORCH FEEDING MECHANISM FOR FOUNTAIN PENS 2 Sheets-Sheet 1 Filed Dec. 26, 1946 FIG. 2

MAX H. STORCH INVENTOR ATTORNEY Jano 17, 1 950 M, s o c 2,495,080

FEEDING MECHANISM FOR FOUNTAIN PENS Filed Dec. 26, 1946 2 Sheets-Sheet 2 FIG? MAX H. STORCH INVENTOR.

FIG. 10 FIG.9

Patented Jan. 17 1950 UNITED STATES PATENT- OFFICE Max B. Storch, Belle Harbor, N. Y.

Application December 26, 1946, Serial No. 718,483

' 1 Claim. (01. 120-52) This invention relates to a fountain pen and has special reference to the feed member of a fountain pen located between the reservoir or barrel and the pen nib to insure a controlled flow of writing fluid.

This invention relates particularly to a feed bar for conducting writing fluid to the pen nib of a fountain pen comprising an elongated feed member having a plurality of longitudinally extending ink flowchannels over a portion of the surface of the feed member.

An object of this invention is to provide a fountain pen having a feed member of the type indicated above in which, under all conditions of use.

the flow of ink is controlled and a supply of ink is always available to the pen nib in writing.

Another object of this invention is to provide a fountain pen having an easily removable pen point while preventing leakage of ink between the ink feeding member and the section member.

With the above and other objects in view, the invention will be hereinafter more particularly described, and the combination and arrangement of parts will be shown in the accompanying drawings and pointed out in the claim which forms part of this specification. I

Reference will now be had tothe drawings, wherein like numerals of reference designate corresponding parts throughout the several views, in

which:

Figure 1 is an enlargedlongitudinal section view of a fountain pen embodying my invention.

Figure 2 is a view in elevation of the fountain pen shown in Figure 1.

Figure 3 is a top plan view of the ink feeding member.

Figure 4 is a side elevation of the feeding member shown in Figure 3.

Figure 5 is a cross-sectional view, the section being taken as on line 5-5 in Figure 4.

Figure 6 is a bottom plan view of the feeding member.

Figure 7 is a side elevation of the assembled feed mechanism.

Figure 8 is a central cross-sectional view of the assembled feed mechanism shown in Figure 7.

Figure 9 is a cross-sectional view, the section being taken as on line 99 in Figure 8.

Figure 10 is a cross-sectional view, similar to Figure 9, with the ink feeding member removed.

In the illustrated embodiment of the invention, the numeral It indicates a fountain pen barrel having an external thread II for the attachment of a fountain pen cap l2.

A section member I3 is adapted to receive on z .l, one end an ink reservoir or rubber sack and has areduced portion -|5 which is designed to fit tightl inside the fountain pen barrel I0.

An annular horizontal seat I1 is provided on the section member l3. The seat I! contacts one end of the barrel l0 and provides a leak proof joint. i 4

The cap |2 has a hollow inner supplemental cap |8 suitably secured therein. The inner cap I 8 has a reduced outer diameter with its external peripheral surface in spaced relation from the inner walls of the cap |2.

The lower end of the inner cap I 8 forms ashoulder |9- against which the upper end of the section member I3 abuts and seals the writing nibs 2|] of the pen 2| and-the ink feed member '22 from the atmosphere. 4 L

A clip 24 having an annular head 25 fits on the upper portion of the cap |2. A decorative tip 2-6 has a threaded portion 21 extending through the annular head 25. The portion 21 engages a threaded aperture2'8 in the inner cap l8 where by the clip 24 is anchored to the pen cap -|2.

The section member l3 has a smooth cylindrical bore 30 for receiving the pen 2| and the ink feed member 22 in forced fit relation therein.

This invention provides a snug fitting pen 2| and the easy insertion or withdrawal of the feed member 22 and the pen 2| from the section meniber 3. Thepen 2| is'securely retained in position in the bore of the section member. I

It is thus possible for the ink to flow only to the channels 33 from the ink sack through'the pocket 34', along'theuncoveredportions 31 of'the ink fiow channels 33 of the feed member 22 to the nibs 20 of the pen 2|. The uncovered portions 31 form an extension ink pocket.

The lower portion of the section member I3 has a bore 3| of smaller diameter than the bore 30 to form a shoulder or sealing seat 32.

The pen 2| is of a length to terminate short of the sealing seat 32. The feed member 22 has longitudinally extending ink flow channels 33 which terminate short of the outer tip of the said member. The channels serve for feeding the ink from the reservoir |4 along the undersurface of the pen 2| to the writing nibs 20 of the pen. A portion of the shoulder 32 is undercut providing a pocket-shaped ink supply pocket 34 to permit controlled ink flow past the shoulder 32 through the ink flow channels 33 to the writing nibs 20. The lower face of the pen 2| bridges the undercut.

As shown in Figure 8, the inner or top wall of the pocket 34 extends to the outer surface of the pen 2| and above the ink flow channels 33.

It is to be noted that the arrangement whereby the concealed end of the pen 2| stops short of the sealing seat 32, that this uncovers a lengthwise portion 3! of the ink flow channels 33 and that a surplus of ink is provided at the inlet to the channels 33 and this causes a controlled free flowing ink supply.

It is also to be noted that while the circular clearances 40 are sealed by the shoulder 32 that the lateral channel extensions or the uncovered end portions 3'! of the channels 33 provided by the spaced-apart position of the concealed end of the pen 2| permits free air flow into the pen as the ink is used up.

As best shown in Figure 9, a portion of the circumference of the feed member 22 is cut away to provide a flat surface forming a key 35. A portion of the periphery of the bore 30 has a flat surface 36 in contact with the key 35 and forms a keyway therefor. The key and keyway serve to aline the ink flow channels 33 with the pocket 34.

The side portions of the feed member 22 are rabbeted on opposite sides of the ink flow channels 33 to provide pockets 38 which are covered by the pen point 2 l. The pockets prevent seepage of ink transversely to the direction of the controlled ink fiow.

As shown in Figure 9, it will be seen that the pen point 2i extends only partly around the circumference of the bore 30 and that in assembled relation, circular clearances 40 appear between the feed member 22 and the circumference of the bore 30.

It is to be noted that, in practice in the art, the feed member has to be considerably smaller in diameter than the bore of the section member to provide room for the pen point.

The pen point not filling the entire space between the said members, circular clearances are formed which may permit leakage between the feed member and the section member unless sealing means are provided to stop the leakage.

By providing the annular sealing seat in the bore of the section member against which one end of the feed member abuts, this eliminates access of the ink to the said circular clearances.

It is thus possible for the ink to flow only in the controlled channels, namely, from the ink sack through the notch in the sealing seat, along ments of my invention, but it will be understood that various changes and modifications can be made therein without departing from the spirit of the invention as defined by the appended claim.

I claim:

In an ink feeding mechanism for a fountain pen, comprising an elongated ink feeding member having longitudinally extending ink flow channels, a section member having an internal shoulder stop for receiving an end face of said ink feeding member in abutting relation, said shoulder providing a sealing seat extending substantially around the circumference of said feed member for preventing leakage of ink between said members, a portion of said shoulder being undercut, said undercut extending below said shoulder to provide an ink supply pocket communicating with an extension pocket above said ink fiow channels, said extension pocket serving to augment the ink flow to said ink flow channels, said members having key and keyway means for alining said ink flow channels with said undercut, a detachable pen point covering the major portion of said ink feeding member, the lower face of said pen point bridging said undercut and being positioned in spaced-apart relation from said seat to uncover end portions of said ink flow channels and to provide entrance to said channels from a lengthwise portion thereof, the frictionally engaging circumferential surfaces between said pen point and said feed section member being defined by the cross-sectional extent of said pen point thereby providing circular clearances on opposite sides of said pen point whereby a controlled ink flow is provided to said pen point through said ink supply pocket and through said undercut portion of said seat, while said circular clearances permit free air flow into said pen as the ink is used up.

MAX H. STORCH.

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

UNITED STATES PATENTS Number Name Date 1,787,406 Mungen et al Dec. 30, 1930 1,882,644 Juster Oct. 11, 1932 1,882,780 Dahlberg Oct. 18, 1932 2,144,296 Namiki Jan. 17, 1939 2,305,287 Weigel Dec. 15, 1942 2,393,250 Juelss Jan. 22, 1946

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