US1370336A - Canning device - Google Patents

Description

E. W. T. MAZARS.

CANNING DEVICE.

APPLICATION FILED FEB. 24, 1920.

1,370,336. Patented. Mar. 1, 1921.

Fi l

' Inn/911K51 Emily Mazars;

'ClWw UNITED STATES PATENT OFFICE.

CANNING nnvion.

Specification of Letters Patent.

Patented Mar. 1, 1921.

Application filed February 24, 1920. Serial No. 361,052. i

To all whom it may concern Be it known that I, EMILY WV. T. MAzAns, a citizen of the United States, and a resident of Sufiield, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Canning Devices, of which the following is a full, clear, and exact specification.

In putting up fruitand other vegetable products in glass jars, it is customary to have a glass top fastened upon the mouth of the ar by means of wire clamping means, a rubber washer being introduced between the top and the edge of the jar-mouth. It is the practice, after filling the jar, to apply the washer and top, partially fasten the top in place by means of part of the wire clamp, and then to stand them in a kettle of water and subject to boiling for several hours until thoroughly sterilized; after which the top is tightly clamped on.

During this sterilizing process, the rubber bands frequently are forced out from between the top and jar until they are almost hanging from the jar and cannot make an air-tight seal. Consequently, the top must be removed, a new rubber band substituted, and the'sterilizing done over again.

The object of this invention is the construction of means whereby the rubber band can be largely protected from the injurious effect of the sterilizing heat, and also confined in place until the canning process has been completed. To this end I have provided a metal band made more or less heatresisting, and adapted to inclose the protruding edge of the rubber band against the action of steam and hot water.

Referring to the drawings forming part of this specification, Figure 1 is an elevation of the upper part of a glass jar and top, showing its rubber washer protected by a device embodying my invention, the same being in section. Fig. 2 is a plan view of one form of the protector. Fig. 3 is a plan view of another form thereof. Fig. 4 is a plan view of still another form of the same. Fig. 5 is a cross section of the protector on an enlarged scale.

In the drawings, the reference numeral 1 designates a glass jar of well known form, having a neck 2, and a removable top 3, a rubber washer 4, and wire clamping device 5. The protector 6 consists of a metal annulus, preferably resilient, and made crescent-shaped in cross section.

In the form of the device illustrated in Fig. 2, it is held in place about the rubber washer by its own resiliency, but in the other two forms it. is mechanically fastened together, either by means of the well-known buckle '7 shown in Fig. 3, or by means of one or more stove bolts 8, as in Fig. 4.

The edges and outer surface of this annulus are covered by a felt or fabric tape 9 confined thereto by being gripped by the bent in edges of the metal, as shown in Fig. 5.

The device is used in the following manner: The jar having been filled, and the washer and top applied thereto, the protector annulus 6 is clasped about the washer, the projecting edges of the latter entering the concavity of theannulus whose fabriccovered edges rest against the top and neck of the jar.- One of the two wire sections of the clamping device 5,the one which serves as the clamping lever,-is then brought up over the top 3, and the jar inserted in the sterilizer kettle. During this action, the fit of the fabric-covered edges 10 against the glass of the jar-neck 2 and top 3 serves to keep the hot water and steam from reaching the rubber washer 4, while the fabric upon the exposed surface of the annulus keeps the heat from. striking through and acting upon the washer. Not only does this save the rubber washer from deterioration from the heat, but at the same time it confines the washer in place so that it cannot be forced out from under the top.

The sterilizing having been finished, the jar is removed from the kettle, the other wire of the clamp 5 turned up over the top 3, and the lever portion forced down to clamp the top firmly in place. Then the annulus 6 is pulled out from between the clamping wire and the jar-neck.

If the protector annulus is of the forms shown in Figs. 3 and 4, it is, of course, necessary first to unfasten the buckle 7, or unscrew one or both the stove bolts 8.

Thus protected, the rubber washers will be preserved from injury and displacement, and .the work of canning fruit and vegetables rendered far easier and more certain in its results.

What I claim is:

1. A means for protecting the rubber washers in canning, consisting of a substan tially annular device made concave interiorly in cross section, and having its edges provided with a yielding material, for inin cross section, the edges thereof being bent 10 closing the protruding edge of the Washer over double, and a length of fabric having and contacting Water-tight with the surits edges clamped inrplace by said bent over i face of the jar and cap above and below the edges and inclosing both the latter and one Washer. surface of the metal.

2. A means for protecting the rubber In testimony that I claim the foregoing 15 Washers in canning, comprising a length of invention, I have hereunto set my hand this resilient sheet metal curved into a substan- 20th dav of February, 1920. tial annulus, and made concave interiorly Mns. EMILY W. T. MAZARS.

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