US627755A - Cover for preserve-jars. - Google Patents

Description

No. 627,755. Patented lune 27, I899.

A. LEG-RAND. COVER FOR PRESERVE JARS.

(Application filed Aug. 9, 1898.)

(No Model.) I

By Attorney Witnesses 4 UNITED STATES PATENT rrrcn.

ALBERT LEGRAND, OF MANCHESTER, NEW HAMPSHIRE.

COVER FOR PRESERVE-JARS.

SPECIFICATION forming part of Letters Patent No. 627,755, dated June 27,1899.

' Application filed August 9, 1898.

To all whom it may concern): 1

Be it known that I, ALBERT LEGRAN'D, a citizen of the United States, residing at Manchester, in the county of I-Iillsborough and State of New Hampshire, have invented a certain new and useful Improved Cover for Preserve-Jars; and I do hereby declare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which it appertainsto make and use the same.

This invention relates, essentially, to the covers of preserve-jars sealed by vacuum and it is particularly adapted for application to a preserve-jar such as is shown in my United States patent of July 5, 1898, numbered 606,822. The coverin both instances closes upon the jar automatically Without the aid of screw-threads, clamps, or tools of any description; but by the following it will'be 0bvious that each have characteristic and distinctive features, the present invention possessing advantages over the former patent, which was provided with a bar or handle across the top of the cover to facilitate its removal and a form of air-vent difficult to construct when formed upon a cover made of the material which I prefer. Theobjects aimed at, however, in both inventions are identicalviz., the production of a jar and cover for same capable of sealing automatically.

The present invention consists in the peculiar construction of the cover and its air-vent, as particularly pointed out in thefollowing specification and claim, and clearlyillustrated in the drawings accompanying and forming a part of the same, of which Figure 1 is a vertical section of the upper portion of a preserve-jar having my improved cover applied thereto. Fig. 2 is a broken elevation showing a portion of two jars as adapted for storing away one upon the other,-Fig. 3 being a section of a portion of a cover with my improved air-vent valve on an enlarged scale, the cover being represented thick, as when made of glass. I

It is desirable that all parts of a preservejar and its cover should be proof against any corrosive action of the contents. For this reason the covers which have been in most demand of late years are made of glass,which,

Serial No. 688,162 (No model.)

however, are much more expensive than when made of metal. y

I can form my improved cover either of glass or metal; but I prefer the latter material for the reason that owing to my improved construction I am enabled to use aluminium, and thus avoid the disadvantages of the other metals, such as tin or zinc.

The manufacturers of other vacuum jarv covers can ill afford to use aluminium, as their covers must be punctured in order to remove them from a jar, thus ruining the covers for future use, while the air-vent provided in my improved covers renders them capable of use over and over again.

Referring to the drawings, A represents a preserve-jar, and B is its flaring mouth.

0 is a cover for the jar having. an annular upturned'tapering flange 0, whose angle is made to correspond with that of the mouth B of said jar. The flange c terminates in a roll 0, which is corrugated or provided with radial grooves 0 across its face, and said flange is providedwith an annular groove 0 into which is fitted a flexible or pliable rubber band D for sealing the cover 0 within the mouth of the jar. An auxiliary band D, may also be placed within the recess of the under side of the roll 0 'of the flange 0, as shown in Fig. 3.

My improved valve for the air-vent c of the cover 0 comprises a threaded stud E, having at one end a fiat head or disk (2 and a thumbnut F, threaded to said stud E and adapted to draw the disk 6 tightly against the under side of the cover 0, a gasket G being placed "to said cover, which cannot be done if aluminium is used for making the cover. I-Ience my improved construction of valve is necessary and is even preferable when the covers are formed of glass. The handle on the cover in the above patent required to be soldered in order to be attached in a neat manner, and as it could not be so attached to an aluminium cover, and for the additional reason that such a bar or handle across the top prevented setting one jar upon the cover of another when storing away, I substituted the roll with its corrugations or grooves on the upper edge of the flange of cover, by means of which the cover may be easily rotated under the pres sure of the hand when it is desired to open a jar, and for the purpose of storing the jars may be safely placed as shown in Fig. 2.

The action of my improved cover is entirely automatic, as it has simply to be placed within the mouth of its jar containing hot preserves, and in a fewflmoments it will have sealed itself, and by pressing the cover tightly into the mouth of a jar containing cold or uncooked fruit the same can thus be sealed.

Having described my improvements, what I claim is The combination with a bottle having a flaring mouth of larger diameter at its base than the diameter of the neck, of a cover comprising an axially-apertured disk, an annular flange conforming to the flared mouth and having an annular semicylindrical depression and a corrugated rolled edge fitting over the edge of the mouth, rubber bands Within the roll and depression respectively, a threaded stud extending through the aperture and provided with a fixed disk at its lower end, a gasketintermediate of the disk andcover and a thumb-nut screwed upon the stud and bearing directly upon the cover, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

ALBERT LEGRAND.

\Vitnesses:

J. B. TI-IURSTON, A. E. BOISVERT.

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