US779108A - Jar-closure. - Google Patents

Description

No. 779,108.- PATENTED JAN. 3, 1905.

A. L. WEISSENTHANNER.

JAR CLOSURE. APPLIUA TION TILED rm. 15. 1904.

Patented January 3, 1905.

PATENT OFFICE.

ALFRED L. WEISSENTHANNER, OF NEW YORK, N. Y.

JAR-CLOSURE.

SPECIFICATION forming part of Letters Patent No. 779,108, dated January 3, 1905.

Application filed February 15, 1904. Serial No.193,b89.

T0 at whmn it ntcty concern:

'Be it known that I, ALFRED L. W EissEN- THANNER, a citizen of the Republic of France,

and a resident of the city, county, and State of New York, have invented certain new and engagement between the jar and the stopper.

The character of receptacle to which my invention relates commonly has a large mouth with an internal recess and requiring aheavy external rim or rib having considerable vertical depth. In order that the locking parts of the stopper may have sufficient strength to form an effective seal, the flange must be extended downwardly to a point near the locking-shoulder formed by the lower edge of the rib and the flange of the stopper must have great vertical depth. The amount of metal required to produce such stoppers increases in an increasing ratio with relation to the depth of the flange.

My invention has for an object to provide a construction whereby the stopper may be formed of less metal without impairing the efficiency of the seal produced thereby, also to provide a construction which is neat and attractive in appearance and convenient and eflicient in use. These and other objects of my invention will more fully appear from the following description.

My invention consists in the novel parts, improvements, and combinations shown and described herein.

The accompanying drawings, which are referred to herein and form a part hereof, illustrate one embodiment of my invention and serve in connection with the description herein to explain the principles thereof.

Of the drawings, Figure 1 is a side elevation of a stopper constructed in accordance with my invention. Fig. 2 is a plan view of the blank from which the stopper of Fig. 1 is formed. Fig. 3 is a side elevation, partly in section, of the stopper applied to a receptacle constructed in accordance with my invention; and Fig. 4 is a similar view representing a modification of the form of stopper illustrated in Figs. 1, 2, and 3.

In accordance with my invention the receptacle is provided at its mouth with an external rim or rib having an annular recess or groove at a point intermediate of its vertical extent, and the stopper is provided with an integral depending flange terminated at or near the upper edge of said groove, said flange having a plurality of depending tongues or projections adapted to be bent into locking relation with the groove. By reason of this construction the flange of the stopper can be made very shallow, and yet the locking projections thereof may be bent into locking contact with the receptacle at a point close to their base, so that they are held in effective locking contact by the full radial stiffness of the flange.

Referring to the drawings, 1 represents a receptacle having a large mouth provided with an external locking rim or rib 2. As is usual with this character of receptacle, it is provided at its mouth with an interior annular recess 3, this feature taken in connection with the large size of the mouth requiring a rib 2, having considerable depth. 3 is provided to reduce the area of contact between the rim of the jar and the packing in the stopper, so that an efiective sealing pressure may be secured with a minimum of force. If the full width of the rim of the jar, which on account of its large size must be relatively thick, was brought into contact withthe packing, too great aforce would have to be exerted and maintained upon the cover to secure the proper sealing pressure between the rim and the packing. As shown, the rib 2 is provided on its external surface with an annular recess or groove 4, said groove being in accordance with the best construction located as close to the upper edge of the rib 2 and as near the plane of the lower surface of the recess 3 as is consistent with a suiflcient degree of strength of the parts. As shown, the groove 4 is located about midway of the vertical extent of the rib.

The recess The stopper comprises a top or crown portion 5, having an integral depending flange 6, provided with a plurality of locking extensions or tongues 7. The flange 6 is substantially vertical and closely fitted to the vertical wall of the rim of the receptacle and is -made of such length that when the stopper is pressed down upon the top of the receptacle with a suitable packing-disk 8 interposed between it and the receptacle the lower edge of said flange will be located at or near the upper edge of the groove. While the stopper is in this position, the tongues 7 are forced into the groove 4 to secure the stopper in its sealing relation on the receptacle. By reason of the fact that the tongues 7 are bent close to the lower edge of the flange a more effective locking engagement between the stopper and the receptacle is secured than could be obtained by a greater number of tongues or projections which were bent into locking relation with the receptacle at a greater distance from the flange. While the stopper may be constructed with anydesired number of locking projections 7, it is provided in its best form with four of these projections, as four projeotions can be formed from metal which might otherwise be wasted in producing the blanks.

A blank for producing a stopper with four locking projections is illustrated in Fig. 2. It will be seen that this blank may be produced from the metal within a square (indicated by dotted lines) each side of which has a length equal to the diameter of the stopper plus twice the depth ofthe flange, the locking projections being formed from the metal at the corners on the square. If preferred, the locking extensions may be made longer than they are shown in Figs. 1, 2, and 3 to provide a projecting end 9, as shown in Fig. 4, adapted to be engaged by the fingers or a suitable implement to release the stopper from the receptacle. The substantially vertical or cylindrical form of the flange of the stopper closely fitted to the outer vertical wall of the rim of the receptacle makes the stopper effective as a temporary cover or closure after the package has been once opened.

While in accordance with the best construction the stopper is provided with four locking projections, some of the advantages of my invention may be realized in a construction having a greater or less number of projections. My invention in its broader aspects, therefore, is not limited to the precise construction shown, as many changes may be made therein without departing from the main principles of the invention and Without sacrificing its chief advantages.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. 'In combination with a receptacle having an external-rib the'outer vertical Wall of which is provided at a point intermediate of its vertical extent with an annular groove, a sheetmetal stopper having an integral depending vertical flange closely fitted to the vertical Wall of said rim and terminated near the upper edge of said groove, and a plurality of depending tongues adapted to be bent into locking relation with said groove.

2. In combination with a receptacle having an external rib the outer vertical wall of which is provided at a point intermediate of its vertical extent with an annular groove, a sheetmetal stopper having an integral depending flange terminated near the upper edge of said groove, said vertical flange closely fitted to the vertical wall of said rim and being provided with four equally-spaced depending tonguesadapted to be bent into locking relation with said groove.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALFRED L. WEISSENTHANNER.

Witnesses:

EDWIN SEGER, J. H. FREEMAN.

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