US99662A - Improvement in fruit-jars - Google Patents

Description

(dimitri tetre WILLIAM GALLOWAY, OF PHILADELPHIA, PENNSYLVANIA.

Lette/rs Patent No. 99,662

, dated February 8,1870.

IMPROVEMENT IN FRUIT-JARS.

The Schedule referred to in these Letters Patent and making part of the same.

I, WILLIAM GALLOWAY, of Philadelphia, county of Philadelphia, State of Pennsylvania, have invented au Improved Preserving-Vessel, of which the following is a specification.

Description of the Invention..

My invention consists of a vessel provided with a packing, arranged out-side of and projecting above the neck, and having a cap or cover, with a horizontal fiange, which bears upon the packing, and forms a perfectly air-tight joint, as fully described hereafter.

Description of the Accompanying Drawing.

Figure 1 is a. sectional elevation of my improved preserviug-v essel Figure 2, a plan view, with the cap removed; and

Figure 3, an inverted plan view of the cap;

General Description.

A is the body of the vessel, which is contracted at the upper end,'forming a shoulder, x, and an annular rib or neck, b, the exterior' of the neck being vertical,

, or nearly so.

To the outer side of the neck is tted au elastic packing-ring, a, which, contracting on the neck, is retained firmly in its position, the upper edge of the packing projecting above the upper edgebf the neck, so as to afford a rest for the horizontal ange d of a cap, c, an annular projection, e, on the under side of the latter, extendingr into the-mouth of the vessel.

' In the manufacture of preserving-Vessels ot glass or earthenware, (and especially the latten) frequent and considerable losses result from the warping of the vessels while in the annealing o'r bakingoveus,tl1e mouths of many of the vessels, when the latter are withdrawn from the ovens, being oval instead of circular in form, while the edges'of the necks, as well as other portions, are often extremely irregular', so that it is impossible to etectually seal the vessels by means oi' the packings and caps, applied iu the usual manner, without first resorting to the expensive process of reducing the irregularities by grinding.

In the manufacture of caps, also, the same difiicnlty is experienced.

By the use of an unconfined packing, surrounding `the neck or month of' the vessel, and extending above the edge of the same, and oi' a cap having abroad horizontal flange, as above described, a perfectly tight joint may be obtained in almost all instances, as no distortion of the form of the mouth will prevent the uniform contact of the edge of the packing with the flange of the cap, while, should the latter be slightly' warped, the packing will yield vertically to such a degree` as to adapt itself to all irregularities, these advantages resulting wholly from the packing being unconned externally.

I do not claim a packing-ring placed in an annular groove at the mout-h of a jar, and projecting above the upper edge of the latter, so as to afford a bearing for the cap, as this arrangement has been employed heretofore, and is objectionable, as, owing to the difiicult-y of producing jars (especially of baked ware) with mouths regular and uniform iu shape, and owing to tle variation in the size of the rubber rings, it is almost impossible to obtain jars that `will be uniformly reliable as preserving-vessels.

Claim..

Witnesses z CHARLES E. FOSTER,

EDM. F'. BROWN.

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