US2132944A - Metal closure and cap for jars, bottles, and the like - Google Patents

Description

S. FREEMAN Oct. 11, 1938.

METAL CLOSURE AND CAP FOR JARS, BOTTLES, AND THE LIKE Filed Feb. 11, 1935 INVEN TOR.

A TTORNEYS.

Patented Oct. 11, 1938 METAL CLOSURE AND we l on. mas, BOTTLES, AND THE LIKE Samuel Freeman, New York, N.'Y. Application February 11, 1935, Serial No. 5,891 3 Claims. .(Cl. 215-46) This invention relates to improvements in metal closures and caps for jars, bottles and the like of the type where the closure is hermetically sealed to the container through the medium of a rubber gasket or the like, and normally the cap or closure rests upon the container under pressure caused by the introduction of a vacuum into the container or otherwise.

A particular object of this invention is the provision of a novelform of cap or closure for jars, bottles and the like which can be easily released from the container to which it is attached.

Other objects of my invention will be set forth in the following description and drawing which illustrates a'preferred embodiment thereof, it being understood that the above statements of the objects of my invention are intended to gen erally explain the same without limiting it in any manner. In the drawing: Fig. 1 is a plan view-of astrip of material from which my improved cap is made.

Fig. 2 is a plan view showing the first operation to which the strip of material shown in Fig. i

1 is subjected.

Fig. 3 is a sectional view along the line 3-3 of Fig. 2. r

Fig. 4 is a side elevation which it is attached.

Fig. 5 is a top plan view of Fig. 4. I

Fig. 6 is an inverted plan view of the cap alone.

Fig. '7 is a sectional View partially broken away, of the top of Fig. 4 showing. the cap and the method of its attachment to the container.

Fig. 8 is a sectional View, partially broken away, of the same type of cap but showing another form of container.

r Fig. 9 is a front elevation of the cap alone.

of cap and jar to The reference numeral Ill indicates the stripof material which is folded to produce the fold II, and out of which is cut a blank along the line 12. r

In contrast to the type of cap used atthe present time, this cap although it is stamped.

into form from a metal blank, is formed by making separate folds, consisting of the original layer l0 andthe additional layers l4 and 15 caused by the lapping of the fold II to secure a substan tially flat surface for the entire body of the cap. 7

After the operation of folding, the unit is stamped to provide a finished capwith dependent sides l6 as shown in Figs. 4,6 and 7. 1

It is apparent also that itis possible to provide a finished cap by first cutting a flat blank,

then folding same, and then forming the sides from the cut out blank.

It is desirable in the forming of the cap to 'emboss or raise the fold H at one point slightly, preferably near the edge of the cap to permit the insertion of a tool of some kind to distort the fold II "when the cap is to be removed.

The reference numeral ll indicates a rubber gasket, by which the cap is hermetically sealed under pressure to the body of the container [8.

The finished cap is indicated as I9.

In the type of cap, as at present manufactured, the cap is loosened from the container by the use of a tool operating upon the lower edge ,of the side l6 and it has been found in practice that the operation of loosening such caps especially in the small sizes thereof, is a difficult and cumbersome one. The principal object of my invention is to provide a cap in which the operation of loosening the cap from the container is easier than in the conventional type and in which the force necessary to remove such cap may be applied to the top of the cap itself instead of upon the side of same.

In order, to remove the cap, a tool 2|, shown in Fig. 5, with a sharp point on same, such as a knife-edge,or the like, is introduced at the point 20.

By lifting the tool against the'loweredge of the fold H, the entire folded portion and the cap will be distorted so as to bring the lower edge.

. It is apparent that'it is possible to get considerably more leverage upon the fold of a cap of this type than where the force must be exerted upon the edge and side of the cap as in the present'conventional form and the possibility of breaking the glass is also avoided.

I have shown a preferred embodiment of my invention, butit is clear that numerous changes and omissions may be made without departing from its spirit.

It should, be noted also that the lapped or folded portion of the capin this embodiment is .part of the side and extends to the bottom of the flange.

Having fully described my invention, what I claim is:-

1. A closure for jars and the like comprising a metallic cap having a substantially flat top and a dependent flange engaging the sides of said jar, a gasket co-operating with the edge of said flange to form an air-tight closure, and a fold on said cap, said fold extending continuously across the top of the cap and flange,

2. A closurefor jars and'the like consisting of a metallic cap and a downwardly extending flange engaging the sides of said jar, means on a said jar forming an air-tight closure in co-bperastantially flat fold extending continuously across 10 the top of the cap and flange.

SAMUEL FREEMAN.

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