US2090646A - Closure - Google Patents

Description

1937. H. SPENGLER 2,090,646

CLOSURE Filei April 4, 1936 :IIIHIII iwmammimmm f6 INVENTOR.

fi zr/vev SPE/VGLEE.

ATTORNEYS Patented Aug. 24, 1937 UNITED STATES.

PATENT OFFICE CIDSURE Henry Spengler, New York, N. 1., aleignor to Sp nmy Cap Corporation, New York, N. Y., a corporation of Delaware Application April 4, 1936, Serial No. 72,679

4 China. (0!. 215-39) The present invention relates to a closure and particularly relates to a type of closure to be ap- In the standard type of closure widely used upon the market today, usually designed as of the Crown type, a relatively soft metal cup is employed, the skirt of which is tucked inwardly 10 about the bottle or container mouth, a cork disk usually being inserted in thebase of the cup and contacting said lip.

The gathered metal edge which is an inherent characteristic of this type of cap is usually ll crimped about the upper bead at the top of the bottle by laterally moving jaws, which jaws are positioned so as to compress the skirt into the recess below said upper head.

In making the bottles, however, it is particum larly diiiicult to regulate exactly the height and depth of the bead and the depth of the groove there below and unless great care is utilized, a great many bottles are often broken due to the fact that such crimping jaws are not accurately 95 positioned with respect to the head at the top of the bottle.

In addition, the metal edge when so gathered in the ordinary Crown type of cap bulges outwardly giving an unsightly appearance at the 30 top of the bottle and also forms an outstanding sharp edge, often causing injury.

It has now been found more readily possible to form bottle tops in which the outside diameter of the head will be fairly uniform, although the as depth of the bead may vary and it is among the objects of the present invention to provide an improved bottle'cap for such bottles, in which the bottle cap may be secured onto the bottle in a firm and secure manner without the necessity 40 of using lateral clamping jaws, and which, at the same time, may also be attached without the usual unsightly appearance and the customary sharp edge.

It is also a further difflculty with the usual 45 type of Crown closure that when applied only the cork forms a seal, the ridges on the outside of the cap permitting a free passage into the interior of the cap and also permitting the escape of gas and entry of the atmosphere in case of any 50 defect in the cork,

It is, therefore, among the further objects of the present invention to provide an improved bottle closure in which not only the cork, but also the metal skirt will form a tight seal cooperating with each other both to prevent escape of fluid or gases from the interior of the bottle or cap container and also preventing entry of the atmosphere into the bottle.

Other objects will be obvious and will appear during the course of the following specification.

In accomplishing the above objects, according to one embodiment of the invention, a cap is formed of a sheet of metal with a circular base and a skirt having an out-turned corrugated portion with an intermediate ridge.

The ridge and corrugated portion are adapted to be inwardly pressed by a downwardly moving capping die which will straighten out the ridge and in so doing, press the corrugated portion into the groove below the bead.

By forming the cap in this way, both the upper side of the skirt, as well as the cork, will be closely pressed upon the side and top of the bead, whereas, the indentations around the lower part of the skirt willbe forced into the recess below the bead. I The above and other objects will appear more clearly from the following detailed description when taken inconnection with the accompanying drawing, which illustrates a preferred embodiment of the inventive idea.

Referring to the drawing:

Figure 1 is a side elevational view.

Figure 2 is a cross sectional view upon the line 2-2 of Figure 3.

Figure 3 is a bottom view upon the line 3-3 of Figure 2.

Figure 4 is a cross sectional view of the cap of Figure 1 on the top of the bottle and about to be pressed into sealing position upon the top of the bottle by a capping die.

Figure 5 is a side elevational view of the cap after attachment to the bottle.

Figure 6 is a cross sectional viewof the cap of Figure 5 when attached, on slightly enlarged scale.

Referring to Figures 1 and 2, the cap has a base ID, with an upper skirt ll, an intermediate ridge l2, and a lower skirt l3. The upper skirt portion ll receives the cork disk or insert ll.

' The ridge l2 extends outwardly beyond the upper skirt portion ii to provide extra metal. The skirt portion l3 consists of a series of indented portions H, and outwardly extending rounded portions l5.

The cap may be made most conveniently of alloys of tin, brass, copper, aluminum and/or lead.

In attaching the cap of Figures 1 to 3 to the top of the bottle l6, having the bead II, with a lower recess i8, acylindrical die I9 with a bevelled lower edge 20 may be employed.

The die id contains an actuating member 2! screwed at 22 into the threaded recess 23. The 5 cylindrical member I9 also receives the coil spring 24 which presses down the fiat die member 25. The flat member 25 has an upstanding nipple 26, which is tapped and receives the bolt 27 having the head 28. The bolt passes through the open- 10 ing 29 in the cup 23 and may reciprocate in said cup 23 and also in the recess 36 in the end of the rod 2|.

In operation, the capping die l9 will come down and the bevel 26 will strike the extended edge l2 collapsing the metal of the lower portion 13 thereof from the position A to the position B until the cylinder reaches the lower dotted line position, as indicated in Figure 4.

In I the meanwhile, the fiat element 25 will press down upon the base iii and the cork il holding them in position upon the top of the bead ii.

The extension of the ridge 82 will automatically press the metal of the lower skirt l3 into the recess l8 with the result, as shown in Figures 5 and 6, that the portions of metal indicated at i2 in Figures 5 and 6 corresponding to the extended ridge l2 will be firmly clamped on the outside of the bead, while the cork will be depressed on the upper portion of the bead ll, as indicated at id in Figure 6.

The attached cap, as shown in Figures 5 and 6,

is devoid of the sharp outstanding edge, has a relatively neat appearance and may be most readily applied by a capping die, such as indicated in Figure 4, with substantial rapidity and less breakage by automatic machinery.

The caps, as formed in Figures 1 to 3, may ordinarily have a maximum external diameter of the ridge E2 of 1 inches, and a maximum depth 40 before placement upon the bottle top of inch.

Regardless of the depth of the bead ill, and the location of the recess 26, the operation indicated in Figure 4, with straightening out of the ridge 12 will cause the lower skirt l3 to collapse 5 around the lower portion of the bead with the indentations and elevations l6, l5, being received in the recess 58..

It will be noted that the outside of the cap, as shown in Figures 5 and 6, after attachment will 50 be substantially cylindrical and a prying or bottle opening tool may be inserted therebelow to lift the cap from theitop of the bottle.

The cork disk 341 of the cap of the present invention need not be glued into position as is necessary with the usual type of Crown caps since the indentations I 6, as best shown in Figure 3, extend inwardly suficiently to prevent the disk from falling out'of position.

In certain instances steel alloy may also be utilized as a material for making the cap of the present invention. 1

The usual Crown blank consists of a disc 1 inches in diameter, whereas the blank for the cap of the present invention may be con- 5 veniently 1 inches in diameter.

The cap of the present invention is particularly advantageous inasmuch as it may be more readily removed from the tops of bottles without deformation and may be constructed with a con- 'siderable saving of metal over and above the usual Crown type of seal.

It is to be understood, however, that all these variations and alterations as well as any other changes or modifications within the scope of the invention are all to be included herein and the invention is not to be limited to the specific embodiment above illustratively set forth.

Other forms of the bulged portion or fold are shown in my continuing applications, Serial No.

' 122,263 filed January25, 1937, and Serial No.

122,630 filed January 28, 1937.

What is claimed is:

l. A cup shaped cap for application to bottles provided with top beads and similar containers, said cap having a circular base, a skirt depending circularly from said base, a cylindrical pliable sealing disk inset against said base inside of said skirt, said skirt having a corrugated or indented lower portion, a smooth cylindrical upper portion and an intermediate portion providing extra metal, said intermediate portion taking the form of an outwardly projecting fold, said fold being adapted to be unfolded and spread to extend said skirt to grip the side of the bead and force the corrugated portion tightly below the bead.

2. A cup shaped cap forv application to bottles provided with top beads and similar containers, said cap having a circular base, a skirt depending circularly from said base, a cylindrical pliable interior of the cap between the fold and the base.

3. A cup shaped cap for application to bottles provided with top bead and similar containers, said cap having a circular base, a skirt depending circularly from said base, a cylindrical pliable sealing disk inset against said base inside of said skirt, said skirt having a corrugated or indented lower portion, a smooth cylindrical upper portion and an intermediate portion providing extra metal, said intermediate portion taking the form of an outwardly projecting fold, said fold being adapted to be unfolded and spread to extend said skirt to grip the side of the bead and force the corrugated portion tightly below the bead, said corrugated lower portion having inwardly extending parts projecting inside of the periphery of said disk, whereby said disk is held in position.

4. A cup-shaped cap for application to containers provided with top beads, said cap having a circular base, a skirt extending circularly from the periphery of said base, and a pliable sealing disk inset against said base inside of said skirt, said skirt being provided intermediate of its length with an outwardly projecting bulged portion adapted to be spread to extend the skirt in the direction of the axis of the cap and said skirt having corrugations or indentations between said bulged portion and the edge of said skirt which are adapted to collapse circumferentially during the extension of said bulged portion, to grip tightly below the head, but which are retained generally in an axial direction, to facilitate engagement of an uncapping element therewith, by the union circumferentially of contiguous corrugations or indentations.

HENRY SPENGLER.

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