US2110578A

US2110578A - Fountain pen

Info

Publication number: US2110578A
Application number: US41560A
Authority: US
Inventors: Aloysius L Prasch
Original assignee: WA Sheaffer Pen Co
Current assignee: WA Sheaffer Pen Co
Priority date: 1935-09-21
Filing date: 1935-09-21
Publication date: 1938-03-08
Anticipated expiration: 1955-03-08

Description

` March 8, 1938. A. PRASCH 2,110,578

FOUNTAIN PEN Filed sept. 21, 1935 @W20 l I ,5.2 ffl Patented Mar. 1938 PATENT OFFICE FOUNTAIN PEN Aloysius Il.` Prasch, Fort Madison, Iowa, assignor to W'. A.y Sheaffer Pen Company, Fort Madison,

Iowa, a. corporation of Delaware Application September 21, 1935, Serial No. 41,560

31 Claims.

'This invention relates to a fountain pen and has special reference to thev feed bary of a fountain pen located between the reservoir or barrel and the pen nib thereof to insure the proper flow 5 of writing fluid and at the same time prevent the writing fluid from flooding or feeding so freely as to cause blots, smears, and the like, on the writing surface.

More particularly, thisv invention relates to a ll feed bar for conducting writing fluid from the barrel of the fountain pen to the nib thereof comprising an elongated body having a channel extending longitudinally over a portion of the peripheral surface thereof the body also having l a channel extending longitudinally over a portion of the opposed peripheral surface which channel communicates with the opposed channel through the medium of a passageway extending through the body.

While in fountain pens heretofore in use, the feed bars have been so constructed and arranged as to permit a. desired ow during normal periods.

of use in writing, there are occasions when'a slight expansion of air or a jar, or some such occurrence, will cause an abnormal flow in a device which is otherwise perfect in operation. Dimculty has always been experienced in the sackless type of fountain pen, particularly when the reservoir is partly empty since the heat of the hand in writing, or of the body in carrying, expands the air. The present invention contemplates the provision of a substantial quantity of ink adjacent the pen nib available for immediate flow to the writing surface, the flow being regulated to prevent iiooding by the particular arrangement of the channels on opposed peripheral surfaces of the feed bar which communicate` with each other through the passage extending through the feed bar.

Itis one of the objects of this invention to pro' Figure 1 is a side elevational view partially in section of a. fountain pen construction embodying one form of this invention;

Fig. 2 is a central longitudinal sectional view of the feed bar employed in Fig. 1;

Fig. 31s a view similar to Fig. 2 showing a modied form of feed bar embodying this invention; and. Fig. 4 is a View similar to Fig. 2 of still another modified form of feed bar. 1

Referring now to the drawing and more par-v ticularly to Figs. 1 and 2 thereof, the device of this invention is illustrated as comprising a bar- 10 rel i5 having an open end for receiving a feed section i6, the latter supporting at one end thereof a pen nib il and at the other end thereof an ink sack lli. The barrel l5 and feed section i6 are preferably formed of a composition material, l5 rubber, or the like, as is usual in present day fountain pen construction.

The 4feed section lt is preferably formed of rubber and is provided with a bore for receiving in forced t relation therein a feed bar it. The ,o

feed bar is likewise preferably formed of rubber and has a cylindrical portion at the rear end thereof for sealed engagement Within the bore of the feed section, a portion of the feed bar extending forwardly beyond the end of the feed 25 section in the usual manner and being of some. what semi-circular cross section. In the present embodiment the feed bar i9 is provided with a channel 2li extending longitudinally over a portion of the peripheral surface thereof, there be- 30 t ing a channel 2i extending longitudinally over a portion of the opposed peripheral surface. Channels 2li and 2i are preferably provided with fissures 22 and 2t, respectively,l extending in the same direction as the channels and below the base thereof. The channel 2| and fissures 23 communicate with the reservoir for the writing fluid in the fountain pen holder at one end of the feed bar and extend forwardly to communicate with a passageway 24 which extends through the 40 elongated body of the feed bar I9 to communicate with the channel 20 and fissures 22 on a portion of the opposed peripheral surface.

The drawing in full lines illustrates the passage 24 as extending obliquely in one direction, 45 although as illustrated in dotted lines, the passage may, of course, extend obliquely in a. forward direction from the channel 2|. The writing fluid from the sack i8 or other reservoir holding the writing nuid passes down the fissures 23 of the 50 channel 2| to the passageway 24 where it is passed in a direction of an opposed portion of the peripheral surface'to the channel 20 and by capillary attraction through the fissures 22 to the underneath side of the pen nib I1. A slight u depression 25 to extend to a greater depth than the fissures 22 may be provided within the channel 20 at a forward portion thereof substantially in alignment with the heart pierce of the pen nib.

Referring now more particularly to Fig. 3, a feed bar 26` similar to the feed bar I9 of Fig. 2 is provided with a channel 21 extending longitudinally over a portion of the peripheral surface thereof, the feed bar having a channel 28 extending longitudinally over a portion of an opposed peripheral surface. Each of the

channels

21 and 28 is preferably provided with

ssures

29 and 30, respectively, extending in the same direction as the channels and below the levels thereof. The

channels

21 and 28, together with their fissuresV 29 and 3U, communicate with each other through a passageway 3| which extends through the` body of the feed bar at substantially right angles to the channels.

The channel 21 1s provided with a reservoir az intermediate the length thereof, the reservoir be-v ing substantially deeper than the fissures and intersecting the fissures. The reservoir issubstantially the same width as the channel and the fissures'are intersected thereby. A second reservoir 33 may, if desired, be provided at theffor-l,

ward end and within the channel 21,'the rese:-

voir extending below the level of the fissures and being of substantially the same width as the ous embodiment, is provided with a channel` extending longitudinally over a forward portion of the peripheral surface thereof, a second channel 36 extending in the same direction over a rear portion of the peripheral surface of the feed bar.

These channels are longitudinally spaced and lie' substantially in a common plane. Another channel 31 is disposed over a portion of an opposed peripheral surface and extends longitudinally thereof in an opposed relation with the spac. portion between the

channels

35 and 36.

All of the

channels

35, 36 and, 31 are preferably provided with

fissures

28, 39 and Il), respectively, which extend in the same direction as the channels and lie below the surface thereof. One end of the channel 31 is connected to one end of the channel 35 through a passageway 4l which extends through the body of the feed bar. This passageway 4| is shown in full lines at substantially right angles to the channels, although the dotted lines Ila and lib show oblique positions of the passageway which may be desirable in some instances. The other end of,the channel 31 is connected by the passageway 42 to the inner end of the channel 36, the other end of the posed ssures.

of this invention and therefore the same is to beV limited only by the prior art and the scope of the appended claims.

I claim:

1. A feed bar for fountain pens comprising an lelongated body having longitudinally spaced and longitudinally extending uid channels of capillary dimensions over a portion of the periphery. of said body in substantially a common plane, said body also having a fluid channel of capillary dimensions extending longitudinally over a portion of an opposed peripheral surface, andseparate -passageways of greater than capillary dimensions through said body communicating between said -spaced uid channels and said opposed iluid channel.

Y 2. A feed bar for conducting writing fluid from the barrel of a fountain pen to the nib thereof comprising an elongated body having a uid Y channel of capillary dimensions extending longitudinally over a portion of the peripheral surface of said body adjacent said pen nib, said body having another fluid channel of capillary dimensions extendng in the same 'direction and substantially in a common plane therewith but spaced longitudinally therefrom for communication with the fountain pen barrel, said body also having a fluid channel of capillary dimensions extending longitudinally over a portion of an op- Vposed peripheral surface, and separate passagethan capillary dimensions in said body intersecting at least a portion of said fissures adjacent said pen nib and being of substantially greater depth than said fissures, said body also having a plurality of fissures on a portion of an opposedperipheral surface communicating with the fountain pen barrel, and a passageway of greater than capillary dimensions through said body in the rear of said reservoir communicating between op- ALOYSIUS L. PRASCH.