US1684415A - Container closure - Google Patents

Description

Sept. 18, 1928. 1,684,415

F. R. SCHRIVER CONTAINER CLOSURE Filed March 5, 1927 i 1 ATTORNEY 4.

Patented Sept. 18, 1928.

UNITED STATES PATENT OFFICE.

mvms RANDOLPH scnnrvnn, or w ILK'INsBUne BOROUGH, PENNSYLVANIA.

CONTAINER CLOSURE.

Application filed March 5, 1927. Serial No. 173,025.

' acids of the fruit or other contents of the container tend to attack the .metal.

Therefore the metal cap-lid has sometimes been rovided with a glass liner disk which is laid in the cap and is intended to prevent contact of the contents of the container with the metal. I

Generally the metal cap-lidis a complete.

closure but in come instances the central portion of the glass liner is exterior-1y exposed.

Such liners are simply laid in the inverted cap-lid and must be held in place with the fingers when the cap-lid is reverted and ap plied to the container. Thus more time is required to apply the closure to the container, and also when the cap-lid is unscrewed the liner frequently is foundto be stuck to the container, by means of the I compressed gasket, and the liner must be separately pried loose therefrom. Again, it is diflicult' to employ machinery to apply the closures where they comprise a plurality of mutually unattached elements such as the cap-lid and the liner.

To provide a closure for glass-fruit jars and the like, wherein no metal is in contact with the contents of thecontainer, and

4 lid onto the container, the lid and the ring being connected together in' such manner that they may be handled, put onto the container or removed from the container, as a unitary structure. The compressible gasket is also assembled with the lid and clamping ring.

Where the clampin ring is to be applied to or removed from t e container by means of a rotative movement, such as screwing show the modified structure of Fig. 4;

' and a'metal clamping ring which clamps the or unscrewing, relative-rotation between the 11d and the clamping ring is provided for, so that the lid need not rotate relative to the container while the closure is. being appliedor removed, but where the clamping ring s not turned relative to the container. in being applied to or removed therefrom, the lid and clamping ring may be assembled 1n fixed relation.

I have also invented new and improved means for applying the metal clamping 5 ring to the container.

I have also invented new and convenient -means for releasing the lid in case it has become tightly resists removal. A

. Other novel features of construction, and also of arrangement of parts, will appear stuck to the container and from the following description.

In the accompanying drawings, wherein I have illustrated the best embodiment of the principles of my invention now known to' me, Fig. 1 is a broken side elevation of a fruit jar and its closure; Fig. 2 is a section taken diametrically through the neck of the container and the closure; Fig. 3 is an enlarged detail of Fig. 2; Fig. 4 is a view simllar to Fig. 1 but showing a modification; Fig. 5 is a view-similar to Fig.3 and taken in section on the line V-V in Fig. 4 to Fig. 6 1s a detail showlng an 1ns1de view of 5 one of the lips of the clamping ring; and Fig. 7 isa broken elevation of a container with the closure in diametric section, showing a further modification.

In the drawings A represents the container such as, a glass fruit jar or the like; B represents the lid; C represents the'metal clamping ring, and D represents the gasket of rubber or other suitable compressible material. T v

Referring first to Figs. 1, 2 and 3, the lid B is a disk of glass or like material provided on its under side with an annular concentric rib 1 spaced inwardly from the edge of the lid and which extends downwithin the neck of the container A, and the gasket D,

channel or seat for the gasket. The outer rib is shown in Figs. 2 and 3 but is omitted in Fig. 5.

The clamping ring C may be stamped 'of the lid, thereb permitting the jars to be stacked one on t e other.

The clamping ring C is also provided with a depending annular skirt 5 which surrounds the lid B and the upper end of the neck of the container A, said skirt and neck being provided with interengaging portions or means to hold the closure in place, as hereinafter described.

The lid B and clamping ring G are assembled, before application as a closure to the jar or other container, as a unitary structure so that they may be applied and removed as a unit. Thus I'show the material of the skirt 5 of the clamping ring indented or struck-in as at 6 forming lugs which 7 engage the lid B from beneath and support it in the clamping ring. Where the lid is provided with the outer rib 2 the lugs 6 engage the rib 2 from beneath. In case the hd is unprovided with anouter rib the lugs engage. beneath the plain edge of the lid. The material of the clamping ring is sufiiciently resilient to permit the lidto be sprung into and out of assemblage with the clamping ring but the elements are held against acc' ental disassemblage. ket D is preferably mounted on the lid before the latter-is sprung into the clamping ring, and the elasticity of the gasket holds it in lace. Thus the closure comprised of the said elements may be applied to the container. either by hand or by mechinery as a unitary structure and likewise removed as a unitary structure from the container.

In the case of a closure which is to be applied or removed by a rotative or screwing or unscrewing movement, relative rotary movement between the lid and the clamping r ng is provided for, so that the clamping ring may be rotated to engage it with or disengage it from the container. while the lid remains stationary.

Where the clamping ring is secured to the container or disengaged therefrom without rotary movement, as for instance as shown in Fig. 6, the lid may be tightly held in the clamping ring to prevent relative rotation of the two elements.

In Figs. 1, 2 and 3, the lower edge of the skirt 5 of the clamping ring G is scalloped to form a plurality of depending apices and the edge of the metal of said skirt is doubled inwardly and upwardly on itself The gasas shown at 7 to strengthen it and is also beaded outwardly as at 8 to add further strength. The apices are struck inwardly and upwardly to form the teeth 9 which engage the under, inclined surfaces of the wedge lugs 10 formed on the neck of the container 8. The lower inclined surfaces of said lugs are preferably roughened or transversely serrated, as shown in Fig. 2, to prevent the teeth '9 accidentally slipping along the lugs and thus loosening the closure on the container. The teeth 9 and the lugs 10 areeach preferably four in number.

In applying the closure, the assembled lid, gasket and clamping ring are placed on the neck of the container with the teeth 9 between the lugs 10 and the clamping ring is then given a rotary movement causing the teeth to engage beneath the lugsand travel down the inclined surface of the same, wedg'ing the lid down tightly on' the neck of the container with the gasket tightly compressed between the lid and the neck to form an air and gas tight joint. A sharp turn of the clamping ring in the reverse direction will loosen the clamping ring. In case the lid is stuck-too tightly to the neck of the container to be loosened by the loosening of the'clamping ring, a knife or other tool may be inserted through the slot or slots 11 in the side of the clamping ring and between the lid and the neck of the container to pry the lid loose.

The ring is preferably strengthened by striking outwardly the rounded or coneshaped projections 12 which also aid in obtaining a firm grip on the clamping ring for rotatin the same In Figs. 4, 5 and 6 the integral studs 13 are substituted on the neck of the container A forthe wedge lugs 10 of Figs. 1, 2 and 3, and the skirt 5 of the clamping ring C is formed to provide a. series of parallel inclined portions 14 between which are interposed the shorter and steeper and reversely inclined portions 15. The lower edge of the skirt 5 alon the inclines 14 is also first turned inwardly and upwardly on itself to obtain a double thickness and then the doubled thickness of metal is turned horizontally inwardly to form the inclined lips 16 whichengage the studs 13 frombeneath. The reverse inclines 15 are not provided with the 16, thus providing clearance for placing the closure on the container. The skirt 5 is also beadedlts at 17 to add strength.

When it is to be applied to the container 4 preferably roughened or serrated as shown at 18 in Fig. '6 to prevent accidental slipping of the lips 16 relative to the studs 13. A reverse rotation of the closure will release the lips 16 from the studs 13 and thus .release the closure from the container.

In Fig, 7 the skirt 5 of the clamping ring C is crimped down over the circumferential rib 19 on the neck of the container. This form is especially adapted for closing and sealing the containers by machinery. In this case the lid B may be so tightly held in the clamping ring that no relative rotary movement between the elements is possible.

It is evident from the foregoing that my improved closure is much more convenient and quick to apply and also to remove from the container than the types of closures now in use, and that it especially lends itself for use in .connection with automatic or semiautomatic machinery. It is sanitary and prevents any contact of the contents of the container with metal. It is inexpensive and adds no cost to the types of closures now in general use for the same purposes.

What I desire to claim is 1. A container closure comprising a glass disk adapted to fit on the mouth of the container, and a metal clamping ring having a skirt arranged to engage the neck of the container and an inwardly extendin annular flange, the disk being held within Elie clamping ring so that the closure may be applied to and removed from the container as aunitary structure, provision being made for relative rotative movement between the disk and the clamping ring.

2. A container closure comprising a glass lid adapted to fit the mouth of the container and a metal clamping ring having an annularskirt which is arranged to be applied to and removed from the neck of the container by rotary movement and said clamping ring being further provided with an inwardly extending annular flange to complete a seat for the disk, means being provided for holding the disk. in its assembled relation with the clamping ring, relative rotative movement between the disk and the clamping ring being provided to permit the ring to be rotated without rotatingthe disk, whereby the closure may be applied to and removed from the container as a unitary structure.

3. A container closure comprising a glass lid adapted to fit the mouth of the container and a metal clamping ring having anannular skirt which is arranged to be applied to.

and removed from the neck of the container by its rotary movement and said clamping ring bein further provided with an inwardly exten ing annular flange to complete a seat for the disk, the disk being inserted in said seat and the clamping ring being provided with inwardly extendin projections to prevent accidental disassem lage of the disk and clamping ring, relative rotative movement between the disk and the clamping ring being provided for to permit rotation of the clamping ring without rotating the disk.

4:- A container closure comprising a glass lid adapted to fit the mouth of the container and a metal clamping ring having an annular skirt which is arranged to be applied to and removed from the neck of the container by its rotary movement and said clamping ring being further provided with an inwardly extending annular flange to complete a seatfor the disk, the disk being inserted in said seat and the clamping ring being provided with inwardly extending projections to prevent accidental disassemblage of the disk and clamping ring, relative rotative movement between the disk and the clamping ring being provided for to permit rotation of the clamping ring without rotating the disk, and a compressible gasket carried by the disk.

5. A container closure consisting of a glass closure disk and a container neck engaging ring, said rin having an inwardly projecting flange over apping the periphery ofthe disk and further having inwardly extending projections engaging the underside of the peripheral portion of the disk, the flange and projection being spaced to permit revolution of the disk relative to the ring.

6. A container closure having a closure portion and a depending metallic skirt, the bottom edge of the skirt being extended inwardly and doubled backwardly over the inwardly extending portion and up within the lower part of the depending portion to provide reinforced container lug engagin members.

i. A container closure havin a closure portion and a depending metallic skirt, the bottom edge of the skirt being extended inwardly and doubled backwardly over the inwardly extending portion and up within the lower part of the depending portion to provide reinforced container lug engaging members, the lug engaging portions being notched and inwardly bent' to provide upwardly pointing teeth.

Signed at Pittsburgh, Pa., this 4th. day of March, 1927.

FLAVIUS RANDOLPH SCHRIVER.

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