US2678762A

US2678762A - Filling device

Info

Publication number: US2678762A
Application number: US158643A
Authority: US
Inventors: Zepelovitch Nathan
Original assignee: NAHUM A BERNSTEIN
Current assignee: NAHUM A BERNSTEIN
Priority date: 1950-04-28
Filing date: 1950-04-28
Publication date: 1954-05-18
Anticipated expiration: 1971-05-18

Description

May 13, 1954 N. ZEPELOVITCH FILLING DEVICE 2 Sheets-Sheet 1 Filed April 28. 1950 W 6 JJ 5 m a V m 0 I y 5 Z .n M W NM W w. M H /fi w Z HIII I H lull 0 7 y 1954 r N. ZEPELOVITCH 2,678,762

FILLING DEVICE Filed April 28, 1950 2 Sheets-Sheet 2 as 'x 170 Z 1.50

"zit/44?: 1 3 11111.

" f1 Hi Euro R.

/man mam/w FM 5 MM HTZORNE) Patented May 18, 1954 FILLING DEVICE Nathan Zepelovitch, New York, N. Y., assignor to Nahum A. Bernstein, New York, N. Y.

Application April 28, 1950, Serial No. 158,643

8 Claims.

This invention relates to filling devices and particularly to an automatic externally disposed filling device for fluid type writing instruments.

Conventional fountain pens of the split nib or stylographic types are normally filled through the action of an internally disposed filling mechanism, creating successive pressure variations within the ink reservoir through the manual actuation of a plunger or lever. The conventional filling mechanisms utilizing either a plunger or lever, in addition to limiting the space available for an ink reservoir within the barrel of the pen, are, due to lack of space, normally relatively delicately constructed. The delicate construction usually results in an increase in production costs and ultimate cost of the pen and also oftentimes results in a shortened life .of the Writing instrument due to breakage or other defection of the relatively delicate filling mechanism.

The conventional filling mechanisms, utilizing pressure variations within the ink reservoir, normally do not assure an eiiective flushing of both the ink and air channels of the pen during filling operations. If the air channel is clogged or plugged, the pen may be filled without a cleansing or flushing of this channel, and the pen, although having its ink reservoir relatively full of ink, will write por1y due to an uneven fiow of ink from the reservoir to the writing nib or tip.

In addition, filling the conventional type pens is normally an inconvenient and relatively sloppy procedure requiring a careful insertion, depthwise, of the pen into the container and a maintenance of position during filling operations. Certain common expedients, such as tiltable bottles and bottles having internally disposed wells are conventionally utilized to overcome this defect and to maintain a required predetermined ink level for filling purposes. In any event, a filling of the conventional type pen must usually be accompanied by a subsequent cleansing of the portion of the pen barrel adjacent the writing tip.

This invention may be briefly described as a fluid writing instrument filling device disposed externally of and separate from the writing instrument and adapted to be removably mounted on a writing fiuicl container or bottle for providing a simple, rapid, clean and efiicient filling and cleansing of fountain pens. The device includes a plurality of interconnected complementary chambers which are deformable in response to manual depression of a writing instrument placed in operative relationship therewith for removing any residue of ink contained within the ink reservoir and for flushing and cleansing both the air and ink channels of the writing instrument, and are further deformable in response to a release of the manual depression of the writing instrument for automatically filling the previously emptied ink reservoir independent of the level of ink in the supply container and for further flushing the air and ink passages of the writing instrument as the ink reservoir is being refilled with fluid ink.

An object of this invention is to provide an automatic filling device for fluid type Writing instruments.

Another object of this invention is to provide a fluid Writing instrument filling device disposed externally of and separate from the writing instrument.

Another object of this invention is to provide an automatic filling device for writing instruments that is simple in construction and further provides a rapid filling of fiuid type writing instruments.

Another object of this invention is to provide an automatic filling device for writing instruments which cleanses and flushes the ink and air channels of a writing instrument during filling operations.

Another object of this invention is to provide an automtaic filling device for fluid type writing instruments which permits the use of a fountain pen having a greatly enlarged capacity for ink storage.

Another object of this invention is to provide an automatic filling device for writing instruments which permits a writing instrument to be filled in a rapid, clean and simple manner.

Another object of this invention is to provide an automatic filling device for writing instruments that is simple and inexpensive in construction.

A further object of this invention is to provide an automatic filling device for writing instruments that is massive, strong and of enduring characteristics.

Other objects and advantages of the invention will be pointed out in the following disclosure and claims and illustrated in the accompanying drawings which describe, by way of example, the principle of the invention and the presently preferred embodiment of the filling mechanism applying this principle.

Referring to the drawings:

Fig. 1 is a cross sectional view of the filling mechanism positioned in operative relationship with an ink bottle;

Fig. 2 is an enlarged sectional view illustrating the positioning of a fountain pen in operative relationship with the filling device;

Fig. 3 is a cross sectional view showing the relationship between the various elements of the filling mechanism during the first stage of the filling operation; and

Fig. 4 is a cross sectional view showing the relationship between the various elements of the filling mechanism during the second stage of the filling operation, and illustrating a modified embodiment of the invention.

Referring to Figs. 1 and 2, the filling device is there illustrated positioned in static operative relationship with an ink container.

There is provided an outer cover member it] having a centrally disposed bore l2. The cover member ID is adapted to be threadedly engaged with the mouth of an ink supply container M, as at it. A resilient deformable washer i8, positioned between the lip of the ink supply container i i and the abutting surface of the cover member it, rovides a hermetic closure for the ink supply container [4.

The cover member is may be shaped and colored to provide a pleasing, decorative efiect and is easily molded from suitable plastic materials. The underside of the cover member 50 is provided with a cylindrically shaped recess 29. Threadedly engaged with the underside of the cover member in on the bounds of the recess 29 is an annular bowl 22 having a centrally disposed aperture 24 sized equivalently with and positioned beneath the bore !2 of the cover member i 0. The bowl 22 cooperates with the recess 28 to provide a cylindrically shaped compartment generally designated as 26.

Positioned within the bore I 2 in the cover member 56 and the aperture 24 in the bowl 22 is a vertically displaceable cylindrical sleeve 28.

The compartment 25 formed by the recess in the cover it and the bowl 22 is divided into complementary upper and lower chambers 3 and 36, respectively, by a horizontally disposed annular deformable membrane 33 hermetically secured at its periphery in the joint between the bowl 22 and the cover member id. The membrane 38 is hermetically'secured to the vertically displaceable sleeve 23 positioned within the bore l2 and the aperture 24 and is encompassed over a major portion of its radius by the substantially horizontally disposed rigid undeiormable discs 39 and 42 mounted on the outer peripheral surface of the sleeve 28 and extending radially outward therefrom. The discs Q0 and 42 do not extend to the bounds of the compartment and serve to provide a rigid mounting for the portions of. the deformable membrane 38 positioned therebetween.

The vertically displaceable sleeve 28 is closed at its lower end by an annular closure plate 46 which may, if desired, be integral with the sleeve 28. Permanently mounted in the annular opening of the closure plate 46 and extending inwardly into the interior of the vertically disposed sleeve 28 is a substantially vertically disposed rigid tube 48. The tube 48, being permanently secured to the vertically displaceable sleeve 28 moves vertically in conjunction therewith when said sleeve 28 is vertically displaced.

Mounted on the upper end of the vertically displaceable sleeve 28 and positioned substantially flush with the upper surface of the cover member ID is a horizontally disposed elastic seating washer 50. The washer 50a is annular in.

shape and provided with a conically shaped centrally disposed opening 52, said opening being wider at its upper extremity in the line of the upper surface of the cover member ID and narrower at its lower extremity. The washer 50 is adapted to hermetically seat the lower portion of the barrel of a writing instrument in a manner which will be described in detail at a later point in this specification.

The portion of the substantially vertically disposed rigid tube 48 positioned within the vertical sleeve 28 is externally encompassed by a vertically disposed elastic tube '58. The elastic tube 58 rests upon the annular closure plate 46, closing the bottom of the sleeve 28, and extends upwardly and-abuts, in static relationship, the underside of the seating washer 50. The elastic tube 58 is closed adjacent its upper extremity by a conicallyshaped elastic deformable ring 66 having a small central opening 62 coaxially disposed withrespect to the axes of the rigid tube 48 and the vertically displaceable sleeve 28.

The vertically displaceable sleeve 28 is thus movable within the bore [2 of the cover member H3 and aperture 24 of the annular bowl 22. To provide a secure hermetic joint between the vertically displaceable sleeve 28 and the annular bowl 22, an elastic deformable washer 70 is secured to the surface of the bowl 22 and encompasses the sleeve 28. The elastic washer l0 functions as a pressure-tight gasket when the vertically displaceable sleeve 28 is moved with respect to the bowl 22. A similar elastic washer 12 is secured to the underside of the recess 20 in the outer cover It and encompasses the vertically displaceable sleeve 28. The washer 12 also func tions as a pressure-tight gasket when the vertically displaceable sleeve 28 is moved with respect to the cover member ID. The washers l0 and '12 may be hermetically secured to the sleeve 28 to assure the maintenance of the pressure-tight relationship.

The lower extremity of the. vertically disposed rigid tube #8 permanently mounted in the closure plate 36 extends downwardly into the ink supply container M. The lower extremity of the tube 48:

is slidably positioned concentrically within the auxiliary tube '56, a suitable elastic washer 18 being positioned intermediate said tubes 48 and ltto providc'a secure hermetic seal therebetween. The tube 76 is adapted to rest on the bottom of the'ink supply container M and is provided with a plurality of internally disposed shoulders for internally supporting a biasing spring 80 to bias the rigid tube 48 and the vertically displaceable sleeve 28 permanently secured thereto in an upwardly disposed position. The lower extremity of the auxiliary tube 16 is adapted to rest on the.

bottom ofthe ink supply container It and is provided with a plurality of smallapertures 84, to.

permit a flow of ink from the main supply within the container I 4 into the

tubes

76 and 48.

The deformable membrane 38 positioned between the discs 40 and 42'mounted on and extending radially outwardly from the vertically displaceable sleeve 25 divides the compartment 25 into the complementary upper and lower annular shaped

chambers

34 and 36, respectively. The upper chamber 34 is connected to the interior of the hermetically sealed ink supply container [4 by a suitablesmall channel 96 positionedwithinthe vertically displaceable sleeve 28. The'lower chamber 35'is connected to the annular space. positioned; intermediate the vertically dis-- placeable sleeve 28 and the elastic tube 58 con-' tained therein by a suitable small channel 92 in the side of the vertically displaceable sleeve member 28.

In the above portions of this specification the structure of the filling device in a static state hermetically positioned in the mouth or" the ink supply container It has been described. In this condition, leakage of ink from the ink supply container It through the filling device is prevented irrespective of whether the container is tilted or turned completely over, as the only possible leakage opening, 1. e. the centrally disposed opening 52 in the elastic ring til, is maintained closed due to the elastic properties of the ring 68.

Fig. 2 illustrates the positioning of a writing instrument in operative relationship with the filling device described above. As the writing point 569 of the writing instrument it; is inserted into the opening 52 in the elastic seating washer 50, the action of opening the filling device begins. A further insertion of the writing tip I into the opening lit results in an engagement of the elastic ring 6% by the tip iiid. The ressure of the writing tip IE8 entering the elastic ring 60 depresses the elastic tube 53 causing said tube to withdraw downwardly from its static position. abutting the elastic seating washer d. The downward movement of the elastic tube 58 continues in response to continued depression of the writing instrument H12 until the underside of the elastic ring 60 engages the upper portion of the rigid tube 48. This arrests the deformation of the elastic tube 58 and a further downward pressure of the writing tip Hid forces said writing tip into the opening 62. The ring til due to its elastic characteristics firmly encompasses the writing tip I09 and hermetically seals said tip within the ink supply tube i3 which extends into the container It. At the same time, the elastic seating washer 56, due to its elastic characteristics, closes hermetically about the bore tilt of the writing instrument m2. The writing instrument is now positioned for the filling and cleansing operations.

It will be noted that when the writing instrument is placed in operative relationship with the filling device as illustrated in Fig. 2, the writing tip I00, which is in fluid connection with the ink reservor Illa within the body of the writing instrument through the channel H9, is directly connected to the ink supply within the ink supply container it through the ink supply tubes 38 and I6. In addition, the lower chamber 35 is connected via the channel 92 to the space disposed between the elastic tube 58 and the sleeve 28 which in turn is connected to an air channel Hit venting the ink reservoir of the fountain pen. Thus, both the ink supply channel Ho and the air vent channel E65 of the writing instrument I62 are both individually and directly connected to the various chambers especially provided in the filling device which are hermetically sealed from one another and from the external atmosphere.

Fig. 4 illustrates a slightly modified embodiment of the invention. There is provided an outer cover IE8 enclosing an annular compartment I2il and having a centrally disposed bore 22. The cover member H8 is adapted to be threadedly engaged with the conventional raised glass threads 24 on the exterior surface on the mouth of an ink supply container I2t. A resilient deformable washer lit positioned between the lip of the mouth of theink supply container I25 and the abutting surface of the:

cover member lie provides a hermetic closure for said container.

Positioned within the bore i222 of the cover member its is a vertically displaceable sleeve I3il. The compartment I20 is divided into complementary upper and lower chambers I32 and ml, respectively, by a horizontally disposed annular deformable membrane 535 hermetically secured at its periphery to the side walls of the cover member i ii) and provided with an annular centrally disposed opening hermetically secured to the vertically displaceable sleeve I30. The membrane 538 is encompassed over a major portion of its radius by substantially horizontally disposed rigid discs wt and Mil mounted on the outer peripheral surface of the sleeve I Stand extending radialiy outward therefrom. The discs are and iii? do not extend to the bounds of thecompartment i253 and serve to provide a rigid mounting for the portions of the deformable membrane I36 positioned therebetween.

Centrally disposed within the vertically displaccable sleeve i and extending downwardly therefrom is a tube I42. The lower portions of the tube Hi2 are concentrically and slidably contained within an auxiliary tube of resting on the base of the ink supply container E25. A suitable gasket or washer I48 is positioned between the tubes Hi2 and IM- to maintain said tubes in hermetic relationship during movement of said tube N32 with respect to said tube are. A spring lee encompassing the tube iii-2i rests upon the upper extremity of the tube t lt and biases the sleeve I38 in an upwardly disposed position.

The upper portion of the sleeve I30 is provided with an annular closure plate I52 which supports an elastic washer I54 encircling the annular opening therein. The tube I52 at its upper extremity is encompassed by an annular deformable washer I55 having an opening axially disposed with respect to the bore of the tube I42. The washer I56 is adapted to hermetically position the writing tip of a writing instrument placed in operative relationship with the filling device. In a similar manner the elastic washer I54 positioned encircling the opening in the closure plate I52 is adapted to hermetically position the bore of a writing instrument Hi2 placed in operative relationship therewith.

The vertically displaceable sleeve I30 is thus movable with the centrally disposed bore I22 of the cover member H8. To provide a secure hermetic joint between the vertically displace--v able sleeve I39 and the portions of the centrally disposed bore I22 adjacent thereto, an elastic deformable Washer I58 is secured to the underside of the upper surface of the cover member IIB and hermetically encompasses the sleeve I38. A

similar elastic washer I?!) is secured to the bottom The membrane I35 positioned between the discs I38 and I4!) divides the compartment I20 into the upper and lower chambers I32 and I34,

respectively. The upper chamber I32 is connected to the interior of the hermetically sealed ink supply container I26 by a suitable small channel I12 disposed within the sides of the sleeve I30. The lower chamber I34 is connected with the interior portions of the sleeve I30 interhis provided with. suitable apertures it at the portion there-.

ae'rsyrea 7. mediate the washers I54 and I56 by'a suitable channel I14 piercing the side of the sleeve I39.

The embodiment set forth in Fig. 4 illustrates a construction positioning the upper and lower chambers I32 and I34 externally of the ink supply. container I26 and is of slightly different shape than the embodiment of the invention illustrated inFigs. 1 through 3 and described above in the earlier portions of this specification. However, this embodiment functions in an exactly similar manner. to the embodiment set forth in- Figs. 1 through. 3.

Reference will be had toFig. 3 for an explanation of. the mode of operation of the filling device. It should be noted at this time that the explanation of operation is specific to the embodiment set forth in Fig. 3, but it should be clearly understood that the slightly modified embodiment illustrated in Fig. 4 functions in a similar manner.

After the writing instrument has been placed in operative relationship with the filling device, as illustrated in Fig. 2 and as explained at an earlier portion of this specification, the opening of the ink supply container I4 has been completed. Referring now particularly to Fig. 3, further downward pressure of the writing instrument I62 initiates the action of emptying any ink contained. within the ink supply reservoir of .the fountain pen and initiates a cleansing and flushing of the ink supply channel H and the air ventchannel I06 extending upwardly to the top of the ink reservoir IIlfl.

After the pen has been placed in operative relationship with the filling device as illustrated in Fig. 2, the elastic tube 58 can no longer be further depressed and the elastic ring 62 cannot be further'widened. A further manual downward. displacement. of the writing instrument IE2 results in a downward. displacement of the displaceable. sleeve 28. The'downward displacement ofthe. sleeve 28 moves the rigid tube 48. connected thereto downwardly within the tube TG resting upon the. bottom of the ink supply container I l; Thedownward movement of the sleeve ZILand the tube: 48 is opposed by the biasing spring 80 post-- tioned within said tube F6.

The downwardmovement of the. sleeve 23 results in a. downward movement of the membrane 33 positioned between. the discs. 4!] and 42.. The. deformation and downward movement of the membrane. 38: results in the lower chamber- 36 being decreased in size. with an accompanying increase in the air pressure therein- The decrease in' volume of the lower chamber. is. also accompanied by a. complementary: in.- crease. in. the. volume of, and accompanying" decrease inpressure in the upper chamber 34.. As the upper chamber 34 increases in volume and the pressure decreases therein, there occurs: a.

simultaneous decrease in pressure within the hermetically sealed ink supply container I4, said chamber 34 and container I4 being connected.

by the channel 90.

The decrease in volume of and increase in pressure within the lower chamber 36' obtained through the downward displacement of'the sleeve 28 results in a simultaneous increase-in pressure in the space contained between the elastic tube 58 and the s1eeve'28' via the channel 92. As thisspace is directly connected with the air ventchannel I06 of the writing instrument I82, the pressure within the inkreservoir W8 is alsoincreased; Ihe overpressure created within the" ink: reservoir'of the fountain: pen, together with the complementary decrease in pressure within thecontainer I4- causes the remnants of ink con tained therein to flow downwardly via the channel I i throughthe writing tip I00 into thecontainer I 4.

Thus depression of the vertically displaceable. sleeve 28 results ina decrease in pressure within: the ink container I4and a concomitant and complementary increase in pressure within the foun-- tain pen I82 which effectively empties the ink.

reservoir I98; During this portion of the-filling cycle the channel I 06 is cleansed by a flow" of air into the reservoir I8 and the channel H0 in the. writing instrument I02 is cleansed by a flow of ink from the reservoir I08.

When the downward movement of the vertically displaceable sleeve 28 is halted by the' engagement of the washer 10 by the disc 42, the action of emptying the ink reservoir I08, together with the first cleansing of the air and ink channels of the fountain pen is halted.

If manual downward pressure on the writing instrument IE2 is then released, the spring 80, which has been previously compressed during the downward movementof the sleeve 28, moves the tube 48 and the sleeve 28 connected thereto upwardly. The upward movement of the vertically displaceable sleeve 28 in response to the action of the spring 82 results in an accompanying up-- ward movement of the membrane 38' and the discs and 42. The upward movement of the membrane 33 and the

discs

40 and 42 results in anincrease in volume of and decrease in pressure within the lower chamber 36. This decrease in pressure is transmitted through the channel 92 to the space positioned between the elastic tube 58 and the vertically displaceable sleeve 28 and furing decreased in volume with an accompanying.

increase in pressure therein. The pressure increase in the upper chamber 34 is transmitted through the channel 90 to the ink supply container I4.

The complementary pressure unbalance created by the upward movement of the vertically displaceable sleeve 28, i. e. the pressure decrease within the ink reservoir IE8 of the writing in-- strument 32 and the pressure increase within the ink container I4, results in a forcing of ink' through the openings 80 in the tube 16 and upwardly through said tube I6 and tube 48' into the ink reservoir I08 of the writing instrument I52 via the ink channel Hi.

It should be noted at this time that the filling action described above results in a second cleansing of the air vent channel I86 and the ink channel IIfl of the writing instrument I02.

After the vertically displaceable sleeve 28 is limited in its upward movement by having the disc 45 abut the washer I2, the cleansing and filling action is completed. A slight pull on the barrel of the writing instrument I02 causes the writing tip I to be easily withdrawn from the opening 62 in the elastic ring and the cone I94 to be easily withdrawn from the elastic sealing washer 5B.

As the pen M2 is withdrawn from operative relationship with the filling device, the elastic tube 58 moves upwardly, the elastic ring 60 contracts and the openi'ng fil isclosed. The upward-moveing member and shaped to hermetically connect the ink within an ink supply container with the writing tip of a writing instrument seated in said seating member, a chamber formed by and disposed within said cover member connected to the ink supply container by passage means in said seating member, a second chamber formed by and disposed with said cover member connected to the ink reservoir of the writing instrument seated on said seating member by second passage means in said seating member, a deformable membrane hermetically secured to said displaceable seating member and forming a common wall for and between said chambers, displacement of said seating member being effective to flex said deformable membrane and vary the volume of said chambers, for creating pressure unbalances within the writing instrument seated on said seating member and within the ink supply container to empty and fill said writing instrument.

2. A. device for filling writing instruments adapted for cooperation therewith and for attachment to an ink supply container, said device comprising, a cover member, a displaceable writing instrument seating member mounted in said cover member, a tube mounted in said seating member and dependent therefrom shaped to hermetically connect the ink within an ink supply container with the writing tip of a writing instrument seated in said seating member, a chamber formed by and disposed within said cover member, an opening in said seating member connecting said chamber with the ink supply container, a second chamber formed by and disposed r with said cover member, an opening in said seating member connecting said chamber with the ink reservoir of the writing instrument seated on said seating member, a deformable membrane hermetically secured to said displaceable seating member and forming a common wall for said chambers, the volume of said first and second chambers being variable in response to fiexure of said deformable membrane resulting from displacement or said seating member in one direction for increasing the pressure within the writing instrument seated in said seating member and decreasing the pressure within the ink supply container to empty said writing instrument, and for decreasing the pressure within said writing instrument and increasing the pressure within said ink supply container to fill said writing instrument in response to displacement of said seating member in a second direction.

3. A device for filling writing instruments adapted for cooperation therewith and for attachment to an ink supply container, said device comprising, a cover member for hermetically sealing the ink supply container, a displaceable writing instrument seating member mounted in said cover member, a tube mounted in said seating member and dependent therefrom into said ink supply, deformable means mounted on said tube shaped to hermetically engage the writing tip of a writing instrument seated in said seating member, a chamber formed by and contained within said cover member, passage means in said seating member connecting said chamber to the ink supply container, a second chamber formed by and contained within said cover member, second passage means in said seating member connecting said second chamber to the ink reservoir of a writing instrument seated on said seating member, a deformable membrane hermetically secured to said displaceable seating member and to the cover member forming a common intermediate wall for said chambers, the volume of said first and second chambers being variable in response to flexure of said deformable membrane resulting from displacement of said seating member for creating complemental pressure unbalances within said writing instrument seated on said seating member and within the ink supply container to empty and fill said writing instrument.

4. A. device for filling writing instruments adapted for cooperation therewith and for attachment to an ink supply container, said device comprising, a cover member for hermetically sealing an ink supply container and having a centrally disposed bore, a vertically displaceable sleeve mounted within said bore, a writing instrument seating element mounted on said sleeve, an ink supply tube concentrically contained within said sleeve and dependent downwardly therefrom into the ink supply container, a writing tip seating element mounted on said ink supply tube for hermetically connecting the writing tip of a writing instrument seated in said writing instrument seating element with the ink supply, a spring for upwardly biasing said displaceable sleeve, a chamber formed by and contained withsaid cover member, an opening in said sleeve connecting said chamber with the ink supply container, a second chamber formed by and contained within said cover member, a second openin said sleeve connecting said second chamber tothe ink reservoir of a writing instrument seated on the writing instrument seating element, a deformable membrane hermetically secured to said displaceable sleeve and to said cover member forming a common deformable wall intermediate said chambers, the volume of said first second chambers being variable in response to downward displacement of said sleeve for increasing the pressure within the ink reservoir of the writing instrument and simultaneously decreasing the pressure within the ink supply container to empty said writing instrument, and for decreasing the pressure within said ink reservoir and increasing the pressure within said ink supply container to fill said writing instrument in response to the upward displacement of said sleeve under the influence of said spring.

5. A device for filling writing instruments of the type having an ink reservoir, a writing tip in fluid communication therewith and an air passage venting said ink reservoir, and adapted for cooperation therewith and for hermetic attachment to an ink supply container, said device comprising a cover member for hermetically sealing the ink supply container, a displaceable writing instrument seating member mounted in said cover member, a tube mounted in said seating member and dependent therefrom into said ink supply container, shaped means mounted upon the portion of said tube disposed within said seating member to hermetically connect a writing tip with the fiuid ink in the supply container, said cover member shaped to provide an internal chamber disposed around said seating member,

-a deformablemembrane securedto said displace- ;able seating member and disposed within said chamber, said deformable membrane dividing :said internally disposed chamber into a, pair of complementary chambers having a common wall, .an .opening in-said seating member connecting Zone .of said chambers to the air passage in said writing instrument to vary the pressure within said ink reservoir in response to the displacement ofrsaid seating member, and a second opening in said seating member connecting the second of 'said .chambers withsaid ink supply container to .vary=the:pressure therein in response to the displacement of said seating member.

-6. A'method of filling writing instruments of the reservoirtypelcomprisingthe steps of placing the writing instrument and the reservoir thereof in hermetic closed circuit relationship with the ink in an ink supply container, creating a pressure increase within said reservoir simultaneously with .a pressure decrease within said ink container, and [a subsequent pressure increase within said container simultaneously with a pressure decrease within said reservoir.

1A device for filling writing instruments .adapted for cooperation therewith and for attachment-to an ink supply container, said device comprising .a cover member, adisplaceable writing instrument seating member mounted in said cover membena tube dependent from said seatinglmember for hermetically connecting the ink within-the ink supply container with the writing tip of a writing instrument when said instrument is seated in said seating member, said cover member shaped to provide a pair of internally disposed =chambers having a common deformable wall passage'means connecting one of saidchamhers with saidink supply containerand the other of said chambers with said writing instrument, the volume of said chambers being variable in response to ldisplacement of the seating member for creating complemental pressure unbalances within .the writing instrument and ink supply container to empty and fill the writing instrument.

8. A device for filling writing instruments adapted for cooperation therewith and forattachment to an ink supply container, said device comprising a covermember, a displaceable writing instrument seating member mounted in said cover member, a writing tip receiving tube mounted within said seating member and dependent therefrom into said ink supply, said .cover member shaped to provide .an internal chamber disposed around said seating member, a

deformable wall member disposed within said internal.chamberandlsecured to said displaceable seating member, said wallmember dividing said internal chamber into a pair of complementary chambers having said wall member as a common wall therebetween, and passage means transmitting fluid pressure in response to displacement of said seating member and said wall member disposed within said seating member connecting one of said pair of complementary chambers with said writing instrument and the other of saidpair of chambers with said ink supply container for References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 5%,739 Smith 'Dec.'21, 1897 1,854,814 Terry Apr. 19, 1932 1,916,186 .Neunier June 27, 1933 2,203,475 Terry June-4, 1940