US2181799A - Receptacle closure - Google Patents

Description

Nov. 28, 1939. L. R. N. CARVALHO RECEPTACLE CLOSURE Filed April 24, 1937 f r I v Iliad IN VE/VTOR LJZN 552 1252270.

fizsm Patented Nov. 28, 1939 UNITED STATES PATENT OFFIC RECEPTACLE CLOSURE Leslie R. N. Carvalho, Toledo,

Owens-Illinois Glass Company,

of Ohio Ohio, assignor' to a. corporation Application April 24, weasel-a1 No. 138.70%

3 Claims.

and atemporary reseal and which may read-- ily be removed from the container by the simple expedient of manually applying upward pressure to one side of the closure.

A still further object of the invention is to provide a closure having a resilient one-piece liner for the entire inner surface of the'closure, which liner is maintained therein by an internal'bead formed at the lower edge of the skirt or attaching flange, the bead having a three-fold function; first, 'to firmly grip and thereby retain the liner in position; second, ,to reinforce and stiffen or lend rigidity to the skirt; and third, to distort the medial portions of the liner skirt to thereby create an annular internal bead designed for holding engagement with a projection on the container. I

It is a still further object of the invention to provide a resilient liner for closures of the type set forth above, which, unlike other liners that must be deformed to assume a cup-shape, thereby losing resiliency, is formed from a single flat blank that may, in the assembly process of the closure, be readily bent into the desired shape.

Yet another object of the invention is to provide a closure of the type set forth above which readily adapts itselfv to mass production by a machine process wherein the attaching skirt is in part rolled inwardly during application of the closure to a bottle, thus causing an annular area of the apron of the cup-shaped liner to be forced or bulged inwardly under a bead formed on the.

finish or top surface of the bottle neck, the bulge causing the closure and liner to be pulled downwardly onto the bottle to effect a top and side seal with the bottle finish in which no metal whatsoever touches the bottle finish while at the same time no part of the liner is exposed to view.

Other objects and advantages of the invention will become apparent hereinafter.

In the accompanying drawing:

Fig. 1 is a vertical sectional view taken through the preferred form of my improved closure showing the same applied to a container;

Fig. 2 is a vertical sectional view taken through the closure prior to application to a container;

Fig. 3 is a fragmentary perspective view,. partly in section, of the skirt or attaching flange which forms a part of the closure illustrated in Fig. 1 or 2;

Fig. 4 is a vertical sectional view illustrating the three parts which cooperate to make up the closure just prior to the final assembly opera-=- tion and illustrating one step in the method of forming the closure;

Fig. 5 is a plan view of the blank from which the resilient liner is formed;

Fig; 6 is a view illustrating the preferred manner in which the closure may be removed from a container;

' Fig. 7 is a sectional view of another form of my invention in which the liner shown in Fig. 5 is fitted into a one-piece skirted closure of more or less conventional design;

Fig. 8' is a sectional view of another form of my invention;

Fig. 9 is a sectional view of still another form of my invention.

The completely assembled closurev (Figs. 1, 2 and 6) consists of a top portion I ll, depending attaching skirt l2 or flange and a liner M. The top portion Ill or button which, may be circular or polygonal in form, has its periphery rolled downwardly and inwardly to form a hollow head It for attachment to the upper edge of a depending attaching skirt l2 or flange. The lower edge of the skirt I2 is turned inwardly and upwardly to form a hollow internal bead l3 which grips and compresses the lower edge of a cup-shaped resilient liner M. The liner I4 is nested within the cap' with the head portion l5 thereof in close engagement with the top portion l0 and with the skirt portion 86 thereof in close contact with the skirt l2. The medial regions of theskirt portion l6 of the liner i i are bulged inwardly to provide an internal bead I! with the result that the normal diameter across the medial regions of the liner skirt less than the diameter of the bead l3 of the skirt i2 and the bead IS on the container neck. Thus when the closure is telescoped over the finish of a bottle as shown in Fig. 1, the external bead l8 at the top end of thebottle neck I9, is engaged by the sides of the liner and the closure is frictionally held in position on the bottle neck. The tendency of the internal bead I! on the liner is to seek a position below and in positive holding engagement with the bead l8 of the bottle neck thus drawing the closure downwardly onto the bottle and providing an effective top and side seal.

In Fig. 1 the closure is I container in a fashion which shown attached to'a will be practised ata distillery, for example. The medial region "oftheskirt 12 is rolled inwardly to. form an an- .nular bead 20 which, being disposed in align- I6 is slightly over, an exceptionally eflective seal is obtained between the bead l8 on the neck and the inwardly bulged or bowed portion of the liner. Consequently the pressure required to remove the closure from the bottleneck l9 or to replace the same is slightly greater than if thebead 20 were not formed in the skirt. For this erting a manual upward push on one edge of" the closure.

Referring now to Figs. 3, 4 and 5, the individual parts of the closure are shown prior to their assembly. The metal portion of the closure which ultimately forms the attaching skirt l2 of the closure, is shown in the form of a continuous one-piece band 2| formed with the internal hollcw bead l3 at its lower margin. Obviously this band could be formed from a strip having its ends united in any conventional manner as for example by a side seam. The upper edge of the band 2| is provided with an out-turnedflange 24.

The top portion H! or button" is the form of a shallow inverted cup-like member including a depending marginal flange 26.

The cup-shaped resilient liner I4 is formed from a flat blank 21 including the substantially circular central top portion l5 from which extend radially, an .annular series of finger-like portions 29 that are designed to be bent at right angles to the blank in forming the skirt portion l6 of the liner. Ifpreferred score lines 30 may be provided in the blank to define a line of boundary between the head portion l5 of the liner and the skirt portion l6 thereof.

In assembling the individual parts of the closure just described, the liner blank.2| is bent into the ultimate shape which it assumes in the completed closure. The skirt portion I 6 of the liner is inserted into the band 2| so that the lower circular edge thereof extends into the hollow bead |3 while the head portion l5 of the liner closes the upper end of this band. The top portion I0 is then telescoped over theupper end of the band 2| .in such a manner that the flange 26 thereof overlies the outwardly turnedflange 24 on said band 2| (Fig. '4). Theflanges 26 and 24 are then rolled over and locked together and at the same time the bead l3 at the lower edge of the band 2| is collapsed to firmly grip the lower edge of the liner I4, and thereby lock the liner in its nested position within the closure.

In another form of the invention, the liner l4 (Fig. 7) is secured within a one-piece drawn metal shell 3| and held assembled therewith by an internal bead 32 at the lower margin of the attaching skirt or flange.

In Fig. 8 I have illustrated a form of my closure formed from a single sheet of metal which is stamped and shaped to produce a shell having a radial pr-y off"ledge 33 or head at the juncture of thetop portion 34 and skirt 35'. As indicated by the dotted and full lines, thebead 33 is reduced vertically in oi'osssection after theliner 36 has been inserted in the closure. Consequently the liner is placed under compression in the skirt portions thereof and is bulgedinwardly by virtue of this compression and also by virtue of the inwardly turned head 31 (Fig. 9) provided on the lower edge of theskirt portion 35 of the shell which compresses the material of the liner in the vicinity of the free edge thereof.

In Fig. 9 the closure of Fig. 8 is provided with an inwardly directed annular head 38 in the skirt portion of the shell which serves to reinforce the inwardly bulged portion of the liner and accentuate the bufge.

Various modifications of the invention may be resorted to without departing from the spirit thereof. For example, while the blank from which the resilient liner is formed, is shown as having six radial portions 29 extending outwardly from the circularcentral portion 28,it is ob- .vious that any number of such radial portions may be employed if desired. Furthermore, the method of assembling the various parts of the closure may be altered without destroying the ultimate result. For example, while in the method of assembly described, the resilient liner is first inserted within the shell, 2| and thereafter the top portion 25 is applied, the invention contemplates the assembling of the two metal parts of the closurefirst and finally inserting the resilient liner into the closure through the open lower end thereof.

I claim:

1. A sheet metal closure comprising a circular top portion, a depending skirt at the margin of the top portion, a liner including an annular porprising a cup-like shell, a resilient cup-like liner nested within the shell and in substantial coextensive intimate contact with the interior of the latter, an inwardly turned bead on the shell ex-. tending over and gripping the resilient material in the vicinity of the free edge of said liner and compressing and displacing the same to form an inwardlyextending annular holding bead as an integral part of the liner, and an annular internal bead on the shell pressing inwardly on the resilient material in the vicinity of the holding bea'l to reinforce the same.

3. A closure for bottle necks having an external annular bead formed thereon comprising a shell having a circular top portion and a depending annular flange, a resilient liner nested within the shell in substantially coextensive contact with the interior thereof, an inwardly turned accentuatingits displacement.

' LESLIE R. N. CARVALHO.

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