US1595177A - Preserving jar - Google Patents

Description

Patented I Aug. 1 0, 1 926.

rnnnnnrcx v. wmrnns, or nawi'oBx, n. Y.

ransnavine 131-? 4 Application filed February 19, 1924 Serial No. 693,848.

This invention relates to preserving jars adapted to be hermetically sealed and especially designed-for use in connection with the vacuum creating instrument covered in my companion ap lication filed herewith.

One object of t e inventionis to provide a preserving jar which is strengthened to resist the pressure of atmospheric air on the outside thereof when a vacuum or partial vacuum is formed therein. Other objects are to provide improved means for hermetically sealing. the jar and for retaining the sealing means in their compressed condition for permanently securing the vacuum space created therein against a possihis entry of atmospheric air entering a jar and the consequent destruction of-saidvacuum in said jar. Other objects will appear as the description proceeds.

The invention will-be first hereinafter described in connection with the accompanying drawings, which constitute part of this invention, and then more specifically defined in the claims at the end of the description.

In the accompanying drawings, wherein similar reference characters are used to designate corresponding parts throughout the several views Figure 1 is a central vertical section of a preserving jar, constructed substantially in accordance with this invention, and of a gasket, cover, sealing valve and screw cap to be used with said jar, said parts being shown separated from the jar, and in the order in whlch they are applied thereto.

Figure 2 is a central vertlcal section of the upper portion of the gasket, cover and wmaling valve in place thereon, said sealing valve being arranged in its non-sealing position.

Fi re,3 is a view similar to Figure 2 but sh' owing thesealing valve seated'and thev screw cap mounted on the valve seated.

Figure 4 is an underplan view of the sealing valve.

' Figure 5 is a top plan view of the cover of the jar, and

Figure 6 isa top plan view of the screw jar to retain said ca a r ahejar 1 ma be made of glassor other suitable materia and is substantially cylin-i, lhe bottom 20f the jar drical in shape. A is arched and made of greater thickness than the wall to give added-strength at this point. The mout 3 of theij'ar" is externally jar showing the screw-threaded at 4 and its inner wall is beveled or inclined at 5 for the purpose of reinforcing said mout A 'cover 6, which may also be made of glass or' other suitable material, is" formed with a cylindrical depending portion 7 to In Figure 1, detached, and in Figure 2,

ready for compression and in Figure 3, as when compressed for forming an air-tight joint. The depending portion 7 of the cover 1s preferably formed with a curved recess 10 for the purpose of providing a dome for the air remaining in. the jar when same is closed, as shown in Figure 2, and before the vacuum or partial vacuum is created in the jar, it being obvious that such space is nec essary, otherwise if the contents of the jar reached a high level, that would exclude all air space, no vacuum that would preserve the contents of a jar could be obtained.

The cover 6 has a recess 11 centrally arranged in its upper face to house a sealing valve 12. A tapered passage 13 extends from the central portion of the base of the recess 11 through the cover and opens at the top of the recess 10 in the bottom of said valve 12 1s preferably flattened at 15 to provide an ample bearing for said valve on the base of the recess 11 in the cover.

en a vacuum or partial vacuum has been formed in the jar by means of the vacuum creating instrument disclosed in my companion able means, e atmospheric air on the outside of the jar will press the cover 6 firmly over the mouth of the jar and will also cause the sealing valve '12 to become flat tened out so that its lug 14' closes the tapered passage 13 in said cover and flattens out the body portion of the sealing alve so that its peri tightly, is jamme against the side wall of the recess 11,- as shown-in Figure 3. To retain the cover, gasket and sealing yalve hery, snugly and air 90 14 does not close said passage 13 of the jar against accidental dislodgement from contact with some external object, a screw cap 16, preferably made of metal, is fitted over said cover and engaged with the screw threads 4 formed around the mouth of the jar. Said cap has a depressed I central portion 17 to extend into the recess 11 in the cover and engage the sealing valve 12 for holding it firmly down in its sealing position, see Figure 3. When the jar is to be opened, the cap 16 is unscrewed and removed, a pointed instrument is inserted between the periphery of the sealing valve 12 and the walls of recess 11 and the sealing valve 12 is pried upwardly. this upward prying lifting valve 12 off its seat and withdrawing lug 14 out of the tapered passage 13 whereupon atmospheric air rushes into the jar, destroying the vacuum therein, so that the cover 6 and gasket 9 may be easily removed, and access readily had to the contents of the jar.

I claim:

1. A cover, for preserving jars, having a recess in its upper surface, and a tapered passage extending through said cover from the bottom of said recess, in combination with a sealing valve to be housed in said recess and having a tapered depending lugto fit said tapered passage, said valve having a flexible marginal portion normally bowed outwardly to rest on the bottom of the recess and support said lug out of contact with said passage prior to the seal-.

ingof the jar.

2. A cover, for preserving jars, having a'recess in its upper face and a tapered passage leading through the cover from the bottom of said recess, 1n combination with a resilient sealing valve to be housed in said recess and having a depending tapered lug to fit said tapered passage, said valve being normally arched, whereby its lug is supported out of contact with said tapered passage prior to the sealing of the jar.

3. A cover, for preserving jars, having a recess in its upper face and a tapered passage leading through the cover from the bottom of said recess, in combination with a resilient sealing valve to be housed in said recess and having a depending tapered lug to fit said tapered passage, said valve being normally arched, whereby its lug is supported out of contact with said tapered passage prior to the sealing of the jar, the marginal portion of the bottom of said valve being flattened for the purpose specified.

In testimony whereof I have signed my name to this specification.

FREDERICK V. WINTERS.

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