US2030062A - Closure for bottles and jars - Google Patents

Description

- Feb. 11, 1936. M; A. GREENE ET AL CLOSURE FOR BOTTLES AND JARS Filed April 15, 1933 Patented Feb. 11, 1936 CLOSURE 1 0B BOTTLES AND JARS Michael A. Greene and Daniel m. Gram-Wheeling, W. va assignora to Basel-Atlas Glass 00., Wheeling, WV. Va.,'a corporation of West Virg'lnia Application llpril 15, 1933, Serial No. 866,374 3 Claims. (01. 215-40) This invention relates to metallic caps forbotties and Jars of the side-seal type inwhich a gasket is mounted in the skirt of the cap and makes sealing contact with the side wall of the container when the cap is forced down to its final position.

One of the primary objects of the invention resides in improving caps of this type so that they may be more readily removed from the Jar.

A further object of the invention consists in 7 so forming the lower edge of the skirt of the cap that it will serve not only-to retain the gasket in position within the cap but also will provide a greater area for the applicationof the pry-oi! tool to prevent the slipping of the tool during removal of the cap.

Another object of .the invention resides in modifying the skirt construction so as to stiffen the same to prevent undue distortion during the prying-oil operation, thereby aiding in removal of the cap as well as preserving its reseal value. Other obiects and advantages of the invention will be apparent from the following description when taken in connection with the accompanying drawing, in which,

Figure 1 is a vertical sectional view of one form of cap about to be applied to the container. I Figurezisasimilarvlewshowing thecapin sealing position. Figure 3 is a vertical sectional view of a modifled construction of cap about to be applied to" the container; and,

' Figure 4 is a similar view showing the modified cap in sealing position.

The numeral I indicates a jar or other .receptacle provided with a mouth 2 and a closure 3 for sealing the same. Below the mouth 2, and spaced only slightly below the closure! when it is-in sealing position, the jar is provided with an annular flange 4 having a substantially horizontal upper surface 5 for cooperation with a pry-oil! tool.

The exterior wall of the Jar adiacent the mouth 2 is preferably of cylindrical form, as indicated by the numeral 8, to provide a. centering portion for the closure 3 when it is loosely mounted on the jar in the initial step of sealing the same. Below the cylindrical portion 6 the jar shown in Figs. 1 and 2 is provided with a head I about which the gasket is forced when the closure is moved to sealing position. This head is slightly rounded, whereas the head I shown in Figs. 3 and 4 is somewhat sharpened.. The closure, to be described, is used with either form of finish, 5 and both give a good seal; but the head I permits easier removal of the closure, while bead furnishes a higher holding power.

tion 0 of the skirt also provides a horizontal shelf 10 or abutment ll which serves as an upper confin-' ing wall for a gasket. The gasket, which is of the side seal yp is indicated by the numeral II. The internal diameter of the gasket is slightly greater than the diameter of the cylindrical por- 15 tion 6 of the finish, so that. the cap and gasket will easily drop over the cylindrical portion of the finish, and of course its diameter is substantially less than the external diameter of the head I of the jar, so as to provide a sealing flt' between 29 these parts.

Formed on the lower edged the skirt 8, is 9. rolled edge or bead 12. The head may be rounded or slightly flattened as shown so long as it provides inwardly and outwardly extending projec- 25 tions it and I4. The projection l3 forms the lower support for the gasket ll cooperating with the skirt 8 and upper flange II to securely hold the gasket in properly led relation with theclosure I.

The outwardly directed portion ll of the has it very considerably aids in the removal of the cap, for this portion plus the inwardly. directed portion greatly increases the pry-oil area thereby, preventing slipping of the pry-ofl tool during the 36 removal of the cap, which is a common difliculty encountered in the removing of caps.

The head l2, taken as a whole, has a further function in that it reinforces the skirt of the closure against distortion by the prying-oi! tool. 40 This action of thebead I! not only aids in the removal of the closure but also by minimizing distortion of the closure preserves its rseal value.

It will thus be seen that the rolled edge I2 including the inwardly and outwardly projecting 45 elements l3 and I4 is a very substantial improvement inclosures of this type in that it performs three distinct functions, namely. Supp rts the gasket li,'greatly facilitates removal of the closum from the container, and assists in malntainso ing the shape of the closure for reseal purposes. In the modified construction of the closure shown in Figures 3 and v4, and referred to by nuflange l1, skirt i8 and gasket i9 correspond with the same elements in the closure 3, but other means have been provided for performing the several functions of the bead l2 of the previously described form of the invention.

In this modified form of closure the lower edge of the skirt is first bent outwardly in a substantially horizontal direction as indicated by numeral 20, and is then doubled upon itself as indicated at 2| to provide an inwardly directed flange 22 for supporting the gasket l9. In other words the metal of the lower edge of the skirt is bent to provide a flange which extends both inwardly and outwardly beyond the skirt. This construction has all of the advantages of the first-described form of the invention; the projection 22 supporting the gasket, the projection 21 providing the additional area upon which the prying-ofi tool can act, so that the tool has less chance of slipping, thereby facilitating removal of the cap, and the two projections together providing the necessary reinforcement to minimize distortion of the closure and enhance its reseal value.

From the foregoing it will be apparent to those skilled in the art that a materially improved sideseal closure hasbeen provided in that without sacrificing any of the sealing qualities of the 010- sure the same may be readily removed with any convenient tool, and that by reason of the reinforcement of the closure little or no distortion will result, thereby permitting reuse of the closure in temporarily sealing the container from time to time while the contents are being used.

In accordance with the patent statutes we have described herein the preferred embodiments of the invention, but obviously various changes seal finish, an annular ledge spaced slightly below the finish, a preformed closure including a top portion, a skirt depending therefrom, a gasket mounted on the inner face of the skirt, a bead formed on thelower edge of the skirt, said bead being partially flattened and having portions extending inwardly and outwardly from the skirt, the inwardly extending portion of the bead serving as a support for the gasket and the inwardly and outwardly extending portions in cooperative relation with and spaced from the ledge to facilitate removal of the closure.

2. In combination with a jar having a side-seal finish, an annular ledge spaced slightly below the finish, a preformed closure including a top portion, a skirt depending therefrom, a gasket mounted on the inner face of the skirt and extending the full height of the skirt, the lower portion of the skirt being bent outwardly to form a horizontal fiange projecting laterally beyond the skirt, and then bent inwardly against itself, the free end of the inbent portion projecting inwardly of the skirt, the inwardly extending portion serving as a support for the gasket, and the inwardly and outwardly extending portions in cooperative relation with and spaced from the ledge'to facilitate removal of the closure.

3. In combination a jar having a finish including an annular bead adapted to cooperate with the gasket of a closure to lock the closure in sealing position, an annular ledge spaced slightly below the finish, a preformed closure including a top portion, a skirt depending therefrom, a gasket mounted on the inner face of the skirt, the lower edge of the skirt being bent to provide inwardly and outwardly extending projections, said inward projection-forming a support for the gasket and the inward and outward projections in cooperative relation with and spac'ed from the ledge to facilitate removal of the closure.

MICHAEL A. GREENE. DANIEL M. GRAY.

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