US2024532A - Container and cover - Google Patents

Description

17} 1935- J. M. MANcuso ET AL. 2,024,532

CONTAINER AND COVER Filed July 27, 1934 \\\L WWW Invenlor Patented Dec. 17, 1935 PATENT OFFICE 2,024,532 CONTAINER AND COVER James M. Mancuso and Richard E. Blagoue, Hibbing, Minn.

Application July 27, 1934, Serial No. 737,280

1 Claim.

This invention relates to a container and cover, the general object of the invention being to provide means whereby the cover or closure is held. in an air-tight closed position by atmospheric pressure thereon, when a partial vacuum has been produced in the container by heating the contents thereof and then permitting the contents to cool.

This invention also consists in certain other features of construction and in the combination and arrangement of several parts, to be hereinafter fully described, illustrated in the accompanying drawing and specifically pointed out in the appended claim.

In describing the invention in detail, reference.

will be had to the accompanying drawing wherein like characters denote like or corresponding parts throughout the several views, and in which:

Fig. 1 is a longitudinal sectional view through the invention.

Fig. 2 is an edge view of the cover or closure member.

In this drawing, the numeral. I indicates a jar preferably formed of glass and having its upper part thickened internally as shown at2 to provide a downwardly tapering neck or mouth 3. The cover or closure member 4 is also preferably formed of glass and has its periphery sloping downwardly and inwardly and the central portion is formed with a knob 5. A gasket 6 is placed between the mount 3 and the periphery of the closure member and has an upwardly extending tab 1 formed thereon and the lower part of a side portion of the closure member is formed with a vent 8 which is formed by a hole passing from the lower face of the closure member upwardly and outwardly to a portion of the side wall thereof.

As the cover or closure member is being put in place, it of course displaces some of the air from the contents of the jar or container and by pulling upwardly on the tab 1 to make the gasket thin at the point where the tab is connected thereto, some of the air will escape through the vent 8. When thecover is in place, the tab is released and the gasket takes its normal position sealing the vent. Pressure on the cover or closure member acts to compress the gasket which is preferably formed of rubber and when the pressure is removed from the cover 7 cover member in position.

or closure member, the compressed gasket forces the cover or closure member upwardly, thus creating a rarified air space in the jar above the contents and thus the atmospheric pressure is greater than that of the pressure in the jar and this acts to firmly hold the closure or To remove the cover or closure member, the tab is pulled upwardly so as to make the parts to which the tab is connected thin which will permit air to enter the jar through the vent and then the cover can readily be removed. By heating the contents and applying the cover while the contents is still hot, the contraction of air when contents and. air in the jar cool, will cause a partial vacuum in the air space of the jar which as before stated causes atmospheric pressure to hold the It is to be understood that changes may be 7 made in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

We claim:

A device of the class described comprising a jar having a wide mouth, the internal walls of which slope downwardly and inwardly, a cover member having an upstanding peripheral flange, the exterior wall of which slopes downwardly and inwardly, said cover having a vent hole therein which extends from a point on the lower face of the cover adjacent the periphery thereof, upwardly and outwardly through a portion of the exterior wall of the flange, said cover when placed in the mouth having the upper edges of the flange spaced downwardly from the upper edge of the mouth, and a gasket fitting in the space between the flange and the mouth and having a portion covering the upper end of the vent hole, and a tab extending upwardly from said portion of the gasket to a point above the upper edge of the mouth, whereby an upward pull on the tab will render that part of the gasket which covers the upper end of the vent hole thin to permit air to enter the vent hole and thus enter the jar.

JAMES M. MANCUSO. RICHARD E. BLAGOUE.

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