US1574281A - Fountain pen - Google Patents

Description

Feb. 23 1926.

G. H. DoYLE FOUNTAIN PEN Filled Jan. 27, 1922 mrwl @Howler Patented Feb. 23,` 1926.

UNITED STATES PATENT OFFICE.

' FOUNTAIN PEN.

Applicationled January 27, 1922. Serial No. 532,297.

To all whom t may concern:

Be it known that I, GEORGE H. DOYLE, a citizen of the United States, residing at Holtsville, in the county of SuHolk and State of New York, have linvented certain new and useful Improvementsin Fountain Pens, of which thefollowing is a specification. o

This invention relates to improvements in fountain pens.

The primary object of the invention is the provision of a fountain pen embodyingv a. cartridge of writing fluid, and having a y novel feed bar associated therewith for uniform ink flow to a pen oint, without liability Of a stoppage of init How due to c1og ging, such as is found in the Ordinary types of fountain pens.

A further object of the invention is the provision of a novel type of fountain pen feed bar, so formed as to meet the various conditions under which a fountain pen is used, so that thesame may'maintain the Fountain pen in good working condition at all times for uniform flow of writing iuid.

A further object of the invention is the provision of an improved cartridge for fountain pens, adapted to contain a supply of ink sealedtherein for use in connection .with replenishing an ink supply within the barrel of a fountain pen.

-Other objects and advantages will be apparent during the course of the following detailed description.

In the accompanying drawing, wherein similar reference characters designate cor-4 respondingparts.` throughout the several VIEWS.

A view taken through the improved fountain pen and showing the cooperation of yvarious parts thereof.

vFigure 2 is fa fragmentary longitudinal cross sectional view through the fountain pen showing the supply cartridgeremoved therefrom. l f

Figure 3 is a fragmentary longitudinal cross section through a sealed cartridge used as a part ofthe improved fountain pen construction.l l

Figure 4 is an enlarged top plan view of the feed bar of the improved fountain pen and showing the formation thereof.

Figure 5 isa cross sectional View taken on the line 5-5 of'Figure 4.

#Figure 6 is a cross sectional view taken on the line 6 -6 of Figure 4.

. Figure 7 is a cross sectional view taken on the line 7-7 of Figure 4.

In the drawing, wherein for the purpose of illustration is shown a preferred embodi- 30 ment of my invention, the letter A designates the improved fountain pen comprising the body portion B; the feed bar C; and supply cartridge D.

The casing portion B of the fountain pen A preferably `comprises the barrel 10, which may vary in formation to various convenientv designs. The stock port-ion 11 in the illustration, is formed integral 'with the barrel 10, and in reality constitutes a partthereof, although, the provision of a detachable stock head is contemplated, kas found in many types'of fountain pen structures no w on the market. The rear endof the barrel 10 is internally screw threaded as at 12 to re- 75 ceive the reduced externally screw threaded shank 13 of the end cap 14, provided as a closure 4member upon the barrel 10, and whereby access may be had tothe interior bore 15 of the barrel 10 to insert or extract 80 the .cartridge D,which will be subsequently described in detail. y

Referring now to the improved feed bar C, the same is provided with the inside end 20 thereof tapering upwardly from one side 85 to a point 21 at the opposite side, ,said feed liar C being provided for insertion into an opening 22 through the forward `end 23 of the fountain pen stock 11, and in such manner that the ordinary pen point 25 is re- 99 tained 'in determined relation to the .feed bar C, andin the barrel 10, the nibs 26 extending forwardly from the outside end 27 of said feed bar C.

. A longitudinal main channel 29 is formed 93 in one side of the feed bar C extending from the extreme point 21 thereof to a cir* cular depression 31 formed adjacent to the outside end 27 said depression 31, of course, having communication with the main channel 29. 1t is preferred, that the main channel 29 have a plurality of lesser grooves 32 formed longitudinally therein for properly guiding the flow of ink in the main channel 29,`said flow being effected in a manner to be hereinafter described. An auxiliary feed groove 34 is provided upon each side of the main channel 429 communicating therewith, and disposed adjacentthe inside end 20 of the feed bar C; said auxiliary channels 34 110 being relatively narrower .than the main channel 29 and tapering-in spiral manner about the feed bar upwardly toward the end 20. A plurality of depressions 36 may be formed upon each sidev of the main channel 29, communicating therewith, and

which incline from the main channel 29 upwardly toward the inside end 20,'the same serving to retain a supply of writing fluid in the feed bar C when the fountain pen A is not bein used, or is inverted. A pair of relatively arge reservoirs 38 are provided in the feed bar C, elongated in the direction of the run of the main channel 29 and disposed immediately adjacent thereto. Relatively narrow channels 39 areprovided for each of the reservoirs 38 communicating the reservoirs with the main channel 29. It is preferred that the reservoirs be disposed intermediate thedepres'sions 36 and the out'- side end depression 31, and in such manner that the channels 39 extend from the reservoirs 38 upwardl toward the inside end 20 of the vfeed bar in order to communicate with the main channel 29.

The 'pen point element 25 bea1's`the same relation to the feed ba'r C asin ordinary 34 are in 5 tion of the main channel 29, the depression 31, reservoirs 38, and the pockets or depressions 36.

Referring now to the construction of the cartridge D,l the same is primarily adapted for containing a supply o'f writing fluid,.

and in this res ect acting independently of any other lportlon of the fountain pen construction so that ink may be retained 45`. therein in a sealed condition ready'for usein the pocket 15 of the fountain pen barrel 10. -Various forms of cartridges can be provided. However, the same preferably comprises a -cylindrical body 40` which may be of seamless metal Celluloid, paraffine paper, etc., having the forward end 41thereof tapered for fitting within the fountain pen stock portion 1'1, to conform with the shape thereof. A stopper` construction 42 may be disposed in the forward end of thecartridge portion 41, and a screw threaded plug 43" etachably mounted in.. the end of the tube 40 opposite the stopper construction 42.

f The stopper constrl'iction 42 vis of such construction as to bel capable of being opened by the 'pointed' end 21 of the vfeed bar C as the cartridge D `is inserted into the pocket of the fountain pen barrel 10. To this end, the same preferably comprises 'a disc 43 of felt, having the axial opening.

44 therein. AThis disc 43 may conveniently construction 42, as the same, in fact, serves that function in connection with the feed bar C. It is preferred that the portion 43 of the construction 42 be exposed inthe end o f the cartridge D. A disc 45 of water proof paper, foil, or other material, imper; vious `to the writing fluid within the cartridge D, is provided as a `part of the stopper 42, being held between ring shaped members'47 and 48, referably of cork, and respectively having t 1e a ertures 49 and 50 therein, which align witi the aperture 44 of the felt construction 43. It can readily be seen thatby this construction, the stopper member 42 is provided, having a way therein defined by the openings 44, 49 and 50 which is plugged up, so to speak, by the disc 45. The stopped construction 42 specifically described herein need not be strictly adhered to, since it is primarily desirable that this end of the cartridge'D be sealed by some' substance or element which may easily rupture upon inserting of the cartridge D into the barrel 10.

In assemblage, the cartridge D is disposed in the pocket 15 of the fountain peu barrel 10, substantially as illustrated in Figure 1. The inserting force will, of course, ru ture the sealing disc 45, by reason of the pointed end 21 of feed bar C coming in contact therewith. The passageway defined by the 'gstopper member 42 is relatively small for snug fitting about the inside end o f the feed bar C which projects into the stock/end 11 of fountain pen' A. The cartridge Dhaving been fully inserted into the fountain en pocket 15, the bar end 20 willextend lnto the interior of the cartridge D, and above the stopper structure 42, so that the writing fiuid Within the cartridge D may readily flow into the main channel 29 and the auxiliary feed channels 34. It is preferred that' a buffer 53 of any approved material, such as porous rubber be positioned upon thevinsideof the cap 14, so that the same may contact with the plug end -43 of the cartridge D and whereby said cartridgev D is maintained within the fountain pen barrel 10l against rattle or movement.

In operation, the ink contained in 'the cartridge D will flow through the minor grooves 32 of the main channel 29. Assuming the pen to be in use, the outside end 27 of the feed bar C will of course be lowermost. The writing Huid will then flow downwardly through the. main channel 29 and not only filling the'uepression 31, butlikewise pursuing a path through the relativelynarrow channels 39 to supply the reservoirs 38 with ink. Under these. conditions ink will, of course, flow to the nibs 26 of the pen 2541s long as the fountain n A is beingused for writing pu oses. der ordinary circumstances, it is t e practice of a fountain pen userl to place the same in vertical position within a pocket or other container with the cap or pen point heus-p. ing 54 uppermost. Immediately upon inverting of the pen A to so position the same, that portion of the fluid contained in the depression 31 and reservoirs 38 will flow downwardly through the main channel 29. Due to the peculiar positioning of the depressions 38, in that they are inclined t0- ward the inside end 20 of the feed bar C, the ink in its return path to the cartridge D will be caught 4within said depression 36 and retained therein. Capillary att-r'ac'tion of the writing fluid will also insure that a small portion thereof will be retained in the reservoirs 38 and the main passageway. 29. However, no matter how much 'the fountain pen A is subjected to shock when in its inverted position, the ink in the depressions 36 cannot flow outwardly thereof, since pockets are formed thereof by reason of the positioning of the pen point 25 in snug relation against the surface of the feed bar C. Thus, when a writer desires to use the vpen A, .the fluid from the pockets 0r depressions 36 will immediately flow down into the main channel 29 for wetting of the nibs 26 lfor writing purposes. Thus, the Writer need not shake the pen A in order to start flow of the writing fluid toward the pen point 25, as is the fountain pens.

From the foregoing, it can be seen that a fountain pen has been provided which includes a novel feed bar arrangement. Likewise the cartridge D for containing writing fluid is of novel formationand can be supplied as an accessory for use in connection withthe' barrel, since the .ink or writing fluid in said cartridge D is securely sealed against liability of leakage, and only is released for use upon the pen 25, when the sealing material 45 `is manner above described.

lVhen the writing fluid within a cartridge D has been exhausted, the cartridge D is extracted by removal of the fountain pen cap punctured in the 14. Due to the positioning of the wiper ele-4 ment 43, residue ink about the feed bar C will be removed, to prevent any liabilityy of the same dropping upon the operators hand. When inserting cart-ridge D, the same is preferably inserted upwardly into the barrel l0 when the latter is in a vertical position, so that the same may be properly inserted to have the pointed end 21 of the bar C rupture the disc of sealing material 45.

From the foregoing,it can be seen that a fountain pen structure liasbeen provided which includes a number of novel cooperating parts. filtered ink free of dirt or other foreign ma` terial may be at hand for use-in connection yfoi-in flow of writing fluid.

practice with ordinary By means of the cartridgeD,

with the fountain pen A at all times. It is a notorious lfact that with 'the self filling fountain pen, sediment, dirt and other for,- eign material is drawn directly into the feed bar and interior of the fountain en v construct-ion, thus quite frequently clogging the feed bar and pen point to prevent uni- Various changes in the shape, size and arrangement of parts may be made to the form 75 of the invention herein shown and described, without departing from the spirit of the invention or the scope of tli-e claims.

1. As an article of manufacture, a foun- 30 tain pen feed bar having a iiiain channel formed` longitudinally therein, and provided with a plurality of catch depiessions formed Aon each side of -said main channel and in .formed in said bar adjacent the main channel and having an auxiliary channely communicating intermediate said reservoir and main channel.

3. As an article of manufacture, a fountain pen feed bar having a main feed channel extending longitudinally thereof and provided with an elongated reservoir de.- pressed therein upon each side of said main channel, relatively narrow' feed channels being provided in communication'between said elongated reservoirs and the main channel so that the entrance from said main channelO-' to the reservoir is at a point remote from the outside end of said bar, said reservoirs extending toward the outer end of .Said bar.'

4. As an article of manufacture, a'foun- 110 tain pen feed bar having a main channel formed longitudinally therein and terminating adjacent the outside end ofA said bar, said said lbar having depressions inwardly thereof in communication with the main channel land inclining toward the outside end of said gitudinally thereof with a feed channel eX- tending from said pointto terminate short of the outside end of the feed bar, said feed 125 bar having auxiliary channelsin communication with said main channel and "spirallingoutwardly therefrom toward the in side end thereof, said feed bar having reservoirs formed therein adjacent the outside end thereof and in communication at their end remote from the outside end of the feed bar with said main channel, said feed bar -furthermore having depressions formed therein in communication with ,the' main channel and disposedin'termediate the reservoir and the auxiliary feed channels and inclining from the point of communication with said main channel toward the inside end of the feed bar.

6. As an article of manufacture, a fountain pen feed bar including a main channel extending longitudinally thereof and provided with a pocket having con'irnunication With said main channel, said'pocket exchannel grooved longitudinally inwardly of the outer surface and extending to the rear end thereof, a/nd provided with 'auxiliary feed vchannels adjacent the rear end thereof grooved inwardly of the outer surface there` of and leading from communication with said-main feed channel in diverging relation therewith to the rear end of said bar.

` GEORGE H. DOYLE.

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