US1608908A - Self-opening bottle cap - Google Patents

Description

Nov. 30 1926. 1,608,908

H. G. NORWOOD SELF OPENING BOTTLE CAP Original Filed April 21. 1925 Patented Nov. 30, 1926.

,.*UNITED STATES HABRY- e. uoRwoon, or BALTIMORE, MARYLAND.

- SELF-OPENING BOTTLE CAP.

Application filed April 21, 1923, Serial No. 633,714. Renewed April 24, 1926.

This invention relates to certain new and useful improvements in self-opening bottle caps or seals and'has particular reference to that type of cap known in the art as a crown'seal wherein the side flange or skirt of the cap is provided with crimps for engaging an annular bead at the mouth of the bottle or container.

The primary object of the invention resides in the provision of a cap or seal of the crimped type, and constructed of nonresilient metal to permit removal thereof from a bottle or other receptable without the use of a bottle opening device or similar implement.

Another object of the invention embodies a bottle cap of the crimpedtype, as above set forth, the provision of protuberances in thehead or upper wall of the cap adapted to. permanently shift outwardly sections of the side crimps in the skirt flange, when pressure is exerted on said protuberances in av direction longitudinally of the axis of the bottle. v A further object of the invention has particular reference to the method of forming the cap, wherein a blank substantially circular in plan view, has spaced peripheral projections that are distorted during the 0 method of forming the cap to be moved inwardly of the body portion of the cap and provide material for the formation of upwardly projecting protuberances upon the head of the cap. with the outer edges of the peripheral projections lying in the same plane with the free edge of thecap skirt and forming a part of' the crimped skirt.

A still further obiect of the present invention is the provision from a circular to blank of a bottlecap in which the head of.

the cap is embossed to form ,protuberances and the edge of the skirt lies in a single plane but does not define a true circle.

Another object-of the invention has refer ence to the construct-ion of a bottle cap of the crimped type wherein the same is formed from a blank of irregular design that is bent and distorted into cap formation. With the above and other objects in view, the invention consists of the novel form,

combination and arrangement of parts'hereinafter more fully described, shown in the accompanying drawing and claimed.

In the drawing, wherein'like reference characters designate corresponding parts.

throughout the several views,

Figure- 1 is a crosssectional view of a bottle cap constructed in accordance with the present inventlon, operatively posltioned upon the mouth of a bottle, a portion of which is illustrated.

Fig. 2 is a side elevational view of the cap, showing the crimped side skirt and the spaced protuberances projecting upwardly from the head of the cap. 6

Fig. 3 is .a top lan viewof the cap showing the elongated p'rotuberances.

Fig. 4 is a plan view of a cap made from a circular blank.

Fig. 5 is a vertical section showing the position of the parts after the cap has been deformed to permit its removal.

Fig. 6 is a plan of the blank from which the cap of. Figs. 2 and 3 is made.

Figs. 7 and- 8 are views of a bottle cap 5 embodying the invention but being of the spun-on type, the views being a vertical section and top plan, respectively.

Briefly described. the present invention aims to provide a bottle cap or container 30 closure that is adapted to be removed from a bottle or container without the necessity of employing the usual type of opening devices Or a similar implement, the cap being constructed in a manner whereby pressure upon the head thereof will cause the side skirt or flange to be movedoutwardly thereby breaking the air-tightseal for the bottle or jar and permitting ready removal of the cap therefrom. The cap is preferably formed from a blank of irregular design, said blank being substantially circular in plan view and having spaced peripheral projections that are adapted to be moved into the body portion of the blank and cap durl ing the bending of the blank to form the same into a cap and transferring the material in said projections into the head of the cap in the form of protuberancesof such. shape as to shift the adjacent portion of the side skirt or flange of the cap outwardly when the protuberances are flattened 'for the purpose of permitting easy removal of the cap without the necessity of employing opening devices. 3

Referring more in detail .to the accompanying drawing, and particularly to Figs.

1 2. 3, and 6. there is illustrated in Fig. 6, a blank 10, from which the cap is formed, of substantially circular formation, the blank being struck from non-resilientmetal preferably thinner than usually employed firmly pressed against a solid object and forthe' purpose and carrying three or more equi-spaced peripheral projections 11.

In bending the blank 10 into cap formation as illustrated in Figs. 1, 2, and 3, said blank, in addition to being bent, has the material thereof distorted for transferring or moving the material of the projections 11 into the body portion of sald blank, the bending and distortion of the metal inthe blank 10 and projection 11 forming a head 13 which is embossed to provide spaced upwardly arched protuberances 14 further forming the side flange or skirt 15 for the cap. With the cap so formed, the outer edges of'the projections 11 lie in the same plane with the lower edge of the skirt 15, and said skirt is continuously crimped as at 16 in the ordinary manner. The cap has the usual disk cork lining '17 as shown in Figs. 1 and 5.

In the form shown in Fig. 4 the cap which is formed from a circular blank is generally similar to that of the preferred form save that the plan View of the edge of the skirt is not quite circular forming peripheral projections 18 as shown because of the drawing away of the material between the projections 18 to form the embossed portions 19 exactly similar to the portions 14 of the preferred form. In Figs. 7 and 8 a still further modification is shown. In these two figures the cap is not crimped but is made with a smooth outer skirt 20 as illustrated-and being designed for straight edge bottles or containers or for use where the cap is to be spun onthe bottle, jar, or other container. Inoperation the cap with its cork disk or seal 17 is forced in firm contact with the bottle and the metal cap is then permanently sealed by the usual crimping machines which bend the skirt 15 under the bead in the glass container and hermetically seal the contents. It will be noted from Fig. 1 that the central plane portion of the cap is of greater diameter than the internal diameter of the neck of the bottle; in other words, in the preferred form of the invention the embossed portions or protuberances lie entirely above the solid glass of the bottle or container. When it is desired to open the bottle the bottle is pressure applied longitudinally of the axis of the bottle. This pressure is transmitted through the embossed portions only and tends to 'flatten them. The effect of the v flattening of the embossed portions is to deform the crimped edge of the cap or seal and to restore the crimped edge in large measure to its original shape. In any event pressure on an embossed'portion causes a distortion of the material in the sections 22 between the protuberance pressed and causes the crimps to move outwardly of the bead of the bottle neck, thereby breaking the airmoval thereof. It is preferred, however, to

press simultaneously against all three of the embossed portions, this causing the skirt section to fulcrum on the top edge of the bottle neck bead and to cause an outward-movement of the entire skirt and since the cap is formed of thin and non-resilient metal the skirt will assume permanently the position into which it is deformed or distorted by the flattening out of the protuberances. I find that the particular shape of the cap illustrated enables me to use a thinner blahk than is customary in the art, The use of non-resilient metal in the making of caps of this nature is practically universal and I do not wish this term to be misunderstood as applying to the making of blanks from.

a sheet of metal which is non-resilient in large sheets. The blank itself, however, when made from sheet metal of the type usually employed and pressed into the shape shown in the various figures will be found to be substantially non-resilient in that upon deforming the metal either to crimp it on the bottle or to remove the cap from the bottle the deformation will be permanent.

What I claim is:

1. A bottle or container cap formed of nonresilient sheet metal and embodying a head and skirt, said head being embossed to provide a plurality of spaced protuberances adapted to shift and expand the skirt upon applying flattening pressure on one or more of the protuberances for the purpose of readily removing the cap from a bottle neck or container.

2. A bottle or container cap formed of nonresilient sheet metal and embodying a head and, crimped skirt, said head being emfrom a ottle neck'or container.

ose of readily removing the cap 3. A cap embodying a head and a skirt characterized by the provision of a protuberance embossed in the head of the cap in such a position-as lie to one side of the bore of the bottle and being adapted to expand the skirt to break the seal upon the applying of flattening pressure to the protuberance.

4. In a bottle cap of the crimped type, a cap formed from a blank substantially circular in plan view with spaced peripheral projections, said blank being bent to provide a head and annular skirt, and protuberances carried by the head and formed adjacent sa'id projections with the outer ends of the projections lying in the same plane with the lower edge of the skirt.

5. In a bottle cap of the crimped type, a

2 blank to form said ca formed from a blank substantially circu ar in plan View and having spaced peripheral projections, said blank being bent to form a head and crimped skirt with the wall of the skirt distorted toshift the material in the projections into said head to form upper protuberances.

6. In a bottle cap, wherein said cap 'is formed ofnon-resilient metal, wherein said cap embodies a head and a crimped skirt, wherein said-head carries spaced protuberances upon the upper surface thereof, and wherein said cap is removable from a bottle neck upon pressure on the protuberances tolaterally shift the crimped skirt, said cap being formed of a blank substantially circular in plan view and having spaced peripheral projections that are adaptedt'o be distorted, and moved into the body of the rotuberances.

7 In as bottle or ar cap, a head, a dependj I a: bottle cap, wherein said C P mgannular skirt, and spaced protuberances formed of non-resilient, metal, wherein said ca embodies a head and a skirt, wherein said head carries spaced protuberances upon the upper surface thereof, and wherein said cap is removable from a bottle neck u on pressure on the protuberances to shift aterally said skirt, said cap being formed of a blank substantially circular in plan View and having spaced peripheral projections that are adapted to be distorted and moved into the body of the blank to form said protuberances.

HARRY G. NORWOOD.

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