US2233160A - Container closure - Google Patents

Description

Feb 25, 1941. a ESEN 2,233,160

CONTAINER CLOSURE Filed May 3, 1940 v INVENTOR J; ATTORNEY.

Patented Feb. 25, 1941 PATENT OFFICE 2,233,160 CONTAINER CLOSURE Jay Bernard Eisen, Yonkers, N. Y., assignor to Ferdinand Gutmann & 00., Brooklyn, N. Y., a corporation of New York I Application May 3, 1940, Serial No. 333,085

12 Claims.

The invention relates to container closures, and

more particularly to a closure for use with containers from which the liquid contents are to be removed otherwise than by pouring.

There is now extensively used a bottle 'for the packaging of ink, containing an interior well adjacent the neckof the bottle to permit the-filling of a fountain pen by withdrawing ink from this well instead of from the bottle proper. This construction is for the purpose of preventing the smearing of the outside of the pen barrel with ink or an incomplete filling of the bulb in the barrel due to the low level of ink in the bottle,

notwithstanding the presence of an adequate supply of ink to properly fill the bulb.

To fill the well with ink, it is necessary to invert the bottle. In the packaging of various other liquids, it is necessary to agitate or shake the bottle or other container, or to completely invert it to secure a thorough admixture of the constituents of the contents.

With containers in which the fluid contents are thus brought into contact with a closure having a metal or plastic composition shell the skirt of which has a screw threaded connection with the neck of the container, experience has demonstrated that the contents of the bottle will adhere to, and accumulate upon, the cushion within said metal shell and, upon repeated replacement of the closure, spread across the cushion disc in a manner to cause it to be forced between the screw threads of the skirt of the closure shell and the neck of the container. This not only interferes with the removal and re-' placement of the closure upon the container, but results in the accumulation of the extruded contents of the container below and about theolosure skirt upon the neck of the container and the soiling of the fingers of the user when removing the closure. f

This is particularly true with the type of ink bottle above referred, to, wherein ink escaping to below and about the skirt-of the closure, and

even upon the screw threads themselves, dries and forms a powder which will fall upon the object upon which a bottle rests when removing the closure, as well as soil the hands.

The same condition prevails with other constructions of containers closed by means of screw cap closures wherein, before removing the 010- sure, it is necessary to violently shake the bottle or invert it, a common practice with druggists and physicians as well as laymen. If the contents of a container are to be poured therefrom,

this condition cannot be avoided, but if the contents of the bottle are to be removed, as when filling an ordinary fountain pen, or by a fluid dropper or an applicator such as a swab, the above conditions maybe avoided. Prior to my invention, a container closure so 5 constructed as to prevent the liquid contents of the container from contacting with the inner rim of the neck of the container, upon the inversion thereof, or to be deposited upon the top of said neckwhen removing said liquid from the I container by means of a fountain pen, a fluid dropper, or an applicator or swab, was produced. In this closure, exclusion of the liquid from the top of the neck of a container was relied upon to avoid the presence of ink which might be sub- 15 sequently forced by the application of the closure to the container, between the skirt of the shell of the closure and the neck of the container.

By the present invention, a closure is provided by which the compression of the sealing gasket is relied upon to exclude, as efiectively as possible, liquid from the top of the neck of a container when it is inverted or during transporta-' tion, the closure being so constructed that in the event-of the liquidseeping past this seal, or being deposited upon the top of the neck of the container when removing a portion of the contents therefrom, such liquid will be so removed, upon replacement of the closure, as to prevent its being squeezed outwardlyof the neck of the container and ultimately between the skirt of the shell and the outside of the neck of the container.

With this construction, any liquid which may reach the top of the neck of the container, or be deposited thereon in removing fluid from the container, is removed by absorption by the ma! terial of the liner. The compressibility of the portion of this liner engaging the top of the neck of the container extends the absorption area throughout suificient of the body of the liner to ensure a continued effective action of the liner in removing liquid which may reach the top of the neck bf the container, and preventing an accumulation of such liquid, or its creepage or seepage toward the outer lip of the neck of the 45 container.

The portion of the liner effective to remove the liquid by absorption islocated only adjacent the top of the neck of the container toward the outer lip thereof, the central portion of the liner V the container.

This facing forms a sufflciently effective seal to minimize, if not absolutely prevent, the escape of liquid from. the top of the neck of acontainer when it is inverted. It also prevents saturation of the material of the liner in a de- By limiting the exposed absorptive area of the liner and providing such a protective facing for the portion thereof with which the contents of the container contact upon inversion of the container, the absorptive body of the liner adjacent the exposed edge portion will dissipate, by capillary attraction, the liquid absorbed. by the liner adjacent this exposed portion and behind the protective facing.

To minimize likelihood of liquid of the contents of the container adhering to the protective facing, it is desirable to provide this facing with a thin film of paraffin, or to otherwise so treat the material of this facing as to increase its liquid repellent properties.

The top of the neck of a container may, if desired, also be provided with a coating of lacquer perfections in the material of the container and so'condition the surface of this material as to retard possible creepage of liquid from the inside of the container toward the outside thereof. This lacquer coating is not used to adhere the liner to the neck of the container, it being desirable to permit a free turning movement of said liner in relation to the container when removing and applying the closure to the container, j

The invention consists primarilyin a container closure embodying therein a shell having a skirt adapted to be engaged with securing means exteriorly of the neck of a container, a liner within, having ,an absorbent ring extending about and adjacent the skirt of said shell, and a facing of non-absorbent material centrally of said shell and spaced from saldskirt a distance to permit engagement of said ring of absorbent of the neck of the container will be removed by particularly pointed out in the claim hereto appended.

Referring to the drawing,

Fig. 1 is a sectional view upon an enlarged scale,'of the upper part of a container and a closure embodying the invention applied thereto;

Fig. 2 is a plan view, broken away upon diflerent planes, of a liner forming a part of'the. closure; and

Fig. 3 is a sectional view of a fragmentary portion of the liner shown in Fig. 2, upon a greatly enlarged scale.

Like numerals refer to like parts throughout the several views. Y

In the embodiment of' the invention as shown in the accompanying drawing, it is illustrated in connection with a well known form of glass bottle used in the packaging of ink.

The body of the bottle is shown at l0, and ad- Jacent the top thereof, at one point of the bot- 5 tie, is a partition ll forming a well I! which may be filled with liquid contents of the bottle by in verting or tilting it accordingto the quantity of ink which may be therein.

The neck l3 of the bottle is provided with a 10 flat top I, and exteriorly of this neck are screw threads l5, or other means by which a re-seal closure may be connected with the bottle. Said securing means I5 may be in the form of continuous' or interrupted screw threads,- inclined lugs 15* metal is used for the material, it is immaterial '25 whether the means for attaching the shell to the neck of the container, such as the screw threads l8, are produced priorto the application of the shell to a container, or subsequent to such application by means of a tool deforming the skirt to 30 conform to projections upon the exterior of the neck of the bottle. The particular material in,

and form of, the skirted shell are immaterial to the invention, any old and well known structure as to such being capable of use. o

To prevent the seepage of diquid contents of a container across the top of the neck thereof, or the squeezing of any liquid which may be depos- 4 ited upon the top of this neck when removing the contents from a container, a ring of absorbent 40 material is provided within the shell adjacent the skirt. This ring will absorb any liquid which may pass the sealing means when a container is tilted, or following such action, and will remove any liquid which may be present upon the top of 45 the neck of the container or bottle when re-' placing the closure after the contents have been removed therefrom.

Within the area of this ring which contacts 50 i with the neck of the container, is a disc of nonabsorbent or liquid repellent material, the edge of which is utilized in forming a seal about the inner edge of the neck of the container. Said disc also prevents the adherence of the contents 55 thereto in suiiicient volume to permit seepage of this material from the disc to the top of the neck. of the container. In the event that some small. seepage may occur, the ring of absorbent material will prevent creepage of such' 1! uid t I 60 the skirt of the shell. q 0 adjacent To provide the ring of absorbent material, it has been found preferable to use a' liner is, which is in the form of a disc of absorbent material such as felt-board or heavy blotting paper, which is 6 of the same diameter as the top of the shell li.. The thickness of this material may vary according to the service which is required of the closure, and it may be white, g .ay or any other color desired.

I 70 The central portion of the disc I9 is provided with a facing disc of liquid repellent or liquid and acid resistant material, preferably formed of a thin stratum of chlorinated rubber 20 having a thin paper backing-2l by means of which it is 75 bonded, by a suitable adhesive 22, to the face of the liner l9.

1 To increase the effectiveness of said facing disc in repelling liquid, or preventing its accumulation thereon, the material of'the stratum 20 is treated with a protective coating 23 of parafiin, or is otherwise treated to increase the efiectiveness of this facing in preventing adherence of the liquid contents of the container thereto when the contents of the container are brought into contact therewith.

The facing disc is of a diameter slightly greater than the inside diameter of the neck of the container, so that the sealing of the container results from engagement of this facing with the inner edge of the neck of the container, thus, when the closure is in place upon the container, interposing between the contents of the container and the absorbent ring about the skirt of the closure, a barrier of non-absorbent material.

A suitable adhesive 24 is employed to bond the facing stratum 20 to its backing 2 l.

The liner i9 need not be, and ordinarily is not cemented to the shell of the closure.

It has been found desirable, in some instances, to provide the neck of the container with a thin coating of lacquer 25.t0 aid in preventing the creeping of liquid across the top of this neck. Such lacquer coating is not used to bond the liner to the neck of the container, since a free turning movement of the closure and its contained liner, in relation to the neck of the container, is desirable, both in applying and removing the closure.

Various adhesives may be used in the strata 22 and 24, particularly as such adhesives are protected by the facing disc from deterioration as a result of contact of the contents of the container therewith.

The action of a closure embodying the invention is substantially as follows:

When a closure is applied to the neck of a container, sufficient pressure is developed to compress the liner i9 and the edge portion of the facing disc against the top of the neck of the container. That portion of the facing disc extending I across and beyond the inner edge of the mouth of the container forms a. liquid tight seal about said mouth and between the container and the liner i9.

If there are slight irregularities at the top of the mouth of a container, or slight imperfections in the material of the facing disc, there may be a slight seepage of the liquid contents of the container through the seal secured by the facing disc at some point about the neck of the container. Any such liquid, however, will be absorbed by the absorbent ring provided by the liner it.

When the liquid contents of a container are brought into engagement with the non-absorbent facing disc, as when the container is inverted to fill the well i2, or when the container is shaken, this liquid, when the container is restored to an upright position, will fall fall back into the container, little or none of it adhering to said facing.

As with the seepage above referred to, any liquid which may pass the seal between the facing disc and the neck of the container will' be absorbed by the exposed portion of the liner adjacent the skirt. The closure may therefore'be removed with little or no likelihood of any of the liquid contents of the container remaining upon the top of the neck of the container. In removing the contents from a container, some of such contents may be deposited upon the top of the the top of the neck of the container and the liner to a point where it may escape between the outside of the neck of the container andthe skirt of the shell.

If a large globule of such liquid should be upon the top of the neck of the container, the combined downward and rotary movement of the closure will cause the absorption of the major portion of the liquid of this globule before any pressure is developed between the liner and the neck of the container, and any residue will be spread about the neck of the container asa result of the turning movement of the closure.

When the exposed portion of the liner I9 is compressed during the final movements of the closure in applying it to the container, liquid absorbed by the liner will be forced into the body of the liner and not from the top to the neck outside of the container.

While, with repeated inversions of the container and the removal and re-application of the closure, the quantity of liquid absorbed by the liner will gradually increase, tests have demonstrated that there will be no such degree of saturation of the material of this liner as will destroy its effectiveness in absorbing liquid as above described, even after repeated inversions of the container and removal of the contents thereof in number in excess of those which would ordinarily complete emptying of the container.

By using a disc it of absorbent material throughout, the capacity of the absorptive means may be materially increased without undue thick-= ness of the material of said liner, since, while a container is not in use, liquid absorbed by the exposed ring portion of the liner will be dispersed by capillary attraction throughout the material of the liner toward the central portion thereof behind the facing disc. Hence, expression of the absorbed liquid, as a result of compression of the ring-like portion of the liner, is either completely eliminated or reduced to a point to be negligible.

By using a container, the neck of which has a fiat top, escape of liquid thereover to between the outside of the neck of the container and the skirt of the closure is reduced to a minimum.

In actual tests it has been found that the use of a lacquer coating upon this fiat surface is not essential, and that satisfactory results can be secured without it. g

It is not the intention to limit the invention to the use of the particular materials hereinde scribed, since other materials, acting in the same manner, may be used. In packaging some ma terials, the use of a metal facing disc has been. found to deleteriously afi'ect such materials. While materials other than chlorinated rubber may be used for the facing disc, it has been determined that this material is highly effective with a Wide range of liquids being packaged.

Having described the invention, what I claim as new and desire to have protected by Letters Patent is:

l. A container closure embodying therein a shell having a skirt adapted to, be engaged with securing means exterlorly of the neck of a container, a liner within, having an absorbent ring uid .to between the skirt and the outside of the shell, and a facing of non-absorbent material centrally of said shell and spaced from said skirt a distance to permit engagement of said ringof absorbent material with the top of the neck of a container and to form a substantially liquid tight seal between said facing and the inner edge of said top, whereby any liquid which may be upon the top of the neck of the container will be removed by absorption by the material of said ring, and escape of such liquid to between the skirt and the outside of the neck of the container will be prevented.

2. A container closure embodying therein a shell having a skirt adapted to be engaged with securing means exteriorly of the neck of a con-' tainer, a liner composed of a disc of absorbent material within said shell and extending to the "skirt thereof, and a facing of non-absorbent material centrally of said disc and spaced from said skirt a distance to permit engagement of the edge portion of said liner disc with the'top of the neck of a container, and the edge portion of said facing with the inner edge of said top, whereby any liquid which may be upon the top of the neck of the container will be removed by absorption by the material of said liner, and escape of'such liquid to between the skirt and the outside of the neck of the container will be prevented.

3. A' container closure embodying therein a shell having a skirt adapted to be engaged with securing means exterlorly of the neck. of a container, a liner composed of a disc of felt-board within said shell andextending to the skirt thereof, and a facing of non-absorbent material centrally of said disc and'spaced from said skirt a distance to permit engagement of the edge portion of said liner disc with the top of the neck of a container, and the edge portion of said facing with the inner edge of said top, whereby any liquid which may be upon the top of the neck of the container will be'removed by absorption by the material of said liner, and escape of such liqneck of the container will be prevented.

4. A container closure embodying therein a shell having a skirt adapted to be engaged with securing means exteriorly of the neck of a container, a liner within, having an absorbent ring seal between said facing and the inner edge of I said top, whereby any liquid which may be upon the top of the neck of the container willbe removed by absorption by the material of said ring, and escape of such liquid to' between the skirt and the outside of the neck of the container will be prevented.

- 5. A container closure embodying therein a shell having a skirt adapted to be engaged with securing means exteriorly of the neck of a container, a liner composed of a disc of absorbent material within said shell and extending to the skirt thereof, and a facing of chlorinated rubber bonded to said disc centrally thereof and spaced from said skirt a distance to permit engagement of the edge portion of said liner disc with the top of the neck of a container, and the edge portion of said facing with the inner edge of said top,

'- .whereby any liquid which may be upon the top of'the neck of the container will be removed by 75' absorption by the material of said liner, and escape of such liquidto between the skirt and. the outside of the neck of the container will be prevented. L

6. A container closure embodying therein a shell having a skirt adapted to be engaged with securing means exteriorly of the neck of a container, a liner composed of a disc,of-felt-board within said shell and extending to the skirt thereof, and a facing of chlorinated rubber bonded to said disc centrally thereof and spaced from said skirt a distance to permit engagement of the edge portion of said liner disc with the top of the neck of a container, and the edge portion of said facing with the inner edge of said top, whereby any tainer, a liner within, having an absorbent ring extending about and adjacent, the skirt of said shell, and a facing of non-absorbent material having a protective coating to prevent adherence of liquid thereto, centrally of said shell and spaced from said skirt a distance to permit engagement of said ring of absorbent material with the top of the neck of a container and to form a substantially liquid tight seal between said facing and the inner edge of said top, whereby any liquid which may be upon the top of the neck of the container will be removed by absorption by the material of said ring, and escape of such liquid to between the skirt and the outside of the neck of the container will be prevented.

8. A container closure embodying therein a shell having a skirt adapted to be engaged with securing means exteriorly of the neck of a container, a liner composed of a disc of absorbent material within said shell and extending to the skirt thereof, and a facing of chlorinated rubber having a protective coating to prevent adherence of liquid thereto bonded to said disc centrally thereof and spaced from said skirt a distance to permit engagement of l the edge portion of said liner disc with the top of the neck of a container, and the edge portion of said facing with the inner edge of said top, whereby any liquid which may .'be upon the top of the neck of the container will be removed by absorption by the material of said liner, and escape of such liquid to between the skirt and the outside of the neck of the container will be prevented.

9. 'A container closure embodying therein a shell having a skirt adapted to be engaged with securing means exteriorly of theneck of a con tainer, a liner composed of a disc of felt-board within said shell and extending to the skirt thereof, and a facing of chlorinated rubber having a protective coating to prevent adherence of liquid thereto bonded to said disc centrally thereof and spaced from said skirt a distance'to permit engagement of the edge portion of said liner disc with the top of the neck of a container, and the edge portion of said facing with the inner edge ofsaid top, whereby any liquid which maybe upon the top of the neck of the container will be removed by absorption by the material of said liner, and escape of such liquid to between the skirt and the outside of-the neck of the container willbeprevented;

n 10. A container closur embodying therein the combination with a container provided with a edge portion of said iacing with the inner edge neck having a top, and a coating oi lacquer thereon, of a shell having a skirt adapted to be engaged with securing means exteriorly of the neck of a container, a liner within, having an abmrbent ring extending about and adjacent, the skirt of said shell, and a facing of non-absorbent material centrally of said shell and spaced from said skirt a distance to permit engagement of said ring of absorbent material with the top of the neck of a container and to form a substantially liquid tight seal between said facing and the inner edge of said top, whereby any liquid which may be upon the top of the neck of the container will be removed by absorption by the material of said rin and escape of such liquid to between the skirt and the outside of the neck of the container will be prevented.

11. A container closure embodying therein the combination with a container provided with a neck having a flat top, and a coating of lacquer thereon, of a shell having a skirt adapted to be engaged with securing means exteriorly of the neck of a container, a liner composed of a disc of absorbent material within said shell and extending to the skirt thereof, and a facing oi'nonabsorbent material centrally of said disc and spaced from said skirt a distance to permit engagement'of the edge portion of said liner disc with the top of the neck of a container, and the of said top, whereby any liquid which may be upon the top of the neckof the container will be removedby absorption by the material of said liner, and escape of such liquid to between the skirt and the outside of the neck of the container will be prevented.

12. A container closure embodying ,therein the combination with a container provided with a neck having a flat top, and a coating of lacquer thereon, of ashell having a skirt adapted to be engaged with securing means exteriorly oi the neck of a container, a liner composed of a disc of felt-board within said shell and extending to the skirt thereof, and a facing of chlorinated rubber having a protective coating to prevent ad'- herence of liquid thereto bonded to said disc.

centrally thereof and spaced from said skirt a distance to permit engagement of the edge portion of said liner disc with the top of the neck of a container, and the edge portion of said facing with the inner edge of said tom-whereby any liquid which may be upon the top of the neck of the container will ,be removed by absorption by the material ofsaid liner, and escape of such liquid to between the skirt and the outside of the neck of the container will be prevented.

JAY BERNARD EISEN.

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