US1346435A - Preserving-jar - Google Patents

Description

A. E. WORSTER.

PRESERVING JAR.

APPLICATION FILED AUG.9. 1919. 1,846,435. Patented July 13,1920.

2 2 g 2 a G UNITED STTE S PATENT ()FFIQE.

ARTHUR EGGLETON WORS'I EB, OF VANCGUVER, BRITISH COLUMBIA, CANADA.

PRESERVING-JAR.

Specification of Letters Patent.

Patented Ju1y 13,1920.

Application filed August 9, 1919. Serial No. 316,349.

Canada, have invented certain new and useful Improvements in Preserving-Jars, of which the following is a specification.

My invention relates to improvements in preserving jars, such as those used for con taining fruit, meat, milk, or other perishable articles, and the object of my invention is to provide a ar of this character which lends itself with great facility to sealing under vacuum and which is cheap and simple to manufacture.

I attain this object by the construction illustrated in the accompanying drawings in which Figure 1 is a vertical sectional elevation of the jar.

Fig. 2 is a plan view.

Fig. 3 is a detailed view of the valve.

Fig. 4 is a detailed view of a modified valve arrangement.

Fig. 5 is a view illustrating two jars assembled together.

Similar figures of reference indicate similar parts throughout the several views.

The jar, indicated by the numeral 1, is formed of glass and at its upper end it is provided on the outside with an exterior lip portion 2, while the inner upper end is re cessed, as at 3 andv 4L to form seats, the seat 3 being for the purpose of receiving the jar cover 5 and the seat 4 for receiving the second j ar, as more fully hereinafter described. The seat 3 is of greater diameter than the seat 4-, while seat el is of greater diameter than. the bore 6 of the jar, and through the seat l are formed apertures 7 through which the air is exhausted from the jar during the sealing operation. The jar cover 5, which fits the recess 3 loosely, is also of glass, and is provided with an aperture 8 which is normally closed by'a rubber valve 9 having a depending member 10 which extends through the aperture and is enlarged below the same, as at 11, so that the valve cannot be inadvertently displaced from the cover. The valve is secured to a plate member 12 having a raised apertured portion 13 by means of which it can be lifted when required.

The jar, while it could be used with any suitable vacuumcreating device, is primarily intended for the use with the apparatus and method for sealing preserving jars, described in my now pending United States applications, and the manner in which the ar is used is as follows: After the fruit or other article has been placed in the jar the cover 5 is seated in the recess or seat 3, the cover as already stated being of slightly less diameter than the seat. The jar is then placed in the lower compartment of the apparatus described in the application referred to and the air pumps set in motion, the operation of which draws all the air out of the jar through the holes 7 and past the cover until all the air is exhausted therefrom, whereupon the cover is forced tightly into place by the rush of air then admitted through the nozzle pipe of the apparatus located directly above the cover, thus perfectly sealing the contents of the jar under vacuum. lVhen it is desired to open the jar all that is necessary is to pry up the valve 9 to admit the air into the jar, when the cover may be readily removed without injury, so that it may be used repeatedly.

While the principal object of the jars is for preserving fruit and other perishable articles they may be used with equal facility in the maintaining of food stuff in either a hot or cold condition and thus prove of great value and service in aeroplane work, exploration expeditions, and the like. To obtain this result two jars 1. are used, as indicated in Fig. 5, one of which jars fits into the other. The contents of the smaller jar are first of all sealed under vacuum in the manner already described, after which it is then placed in the large jar being suspended from the seat 4, the lip 2 of the smaller jar being clear of the apertures 7 of the large jar. Both jars are then placed in the compartment of the sealing apparatus referred to and the air is then exhausted from the large jar which is then sealed as described, from which it will be apparent that the small jar is then suspended in vacuum so that its contents are maintained hot or cold as the case may be. In this case the valve 9 is mounted in a recess in the cover and the portion 18 hinged so that it may be laid flat thereon.

From the foregoing it will be seen that I have devlsed a simple aHClfHIGXPGIlSlVG ar which rnay be used with great convenience,

economy, and utility for the preservati'onof food stuffs. a I 7 What I claim as my invention is V 1. A preserving jar recessed at its uppe end to form a seat adapted to receive freely afcover and further recessed to form. aseciond seat below the first one, the lower seat being apertured.

2. A preserving ar having an exterlor 11p at its upper end, sald ar belng also recessed vat its upper end to form a seat adapted to 4. A preserving jar having an exterior lip and recessed at its upper end to form a seat, a cover seated thereon fitting freely the recess, said cover having an opening therethrough, and a valve mounted on the cover normally closing the opening having a depending member extending through the opening adapted to prevent its withdrawal therefrom. I V

5. A preserving jar having an exterior lip and recessed at its upper end to form upper and lower seats the lower one of which is apertured, a cover seated freely on the upper seat, said cover havlng an openlng therethrough, and a valve mounted on the cover 7 normally closing the said opening.

6. A preserving jar having an exterior lip and recessed at its upper end to form upper and lower seats, the lower one of which is apertured, a cover seated freely on the upper seat, said cover having'an opening therethrough, and a valve mounted on" the cover normally closing the said opening, provided with means whereby it may be lifted.

7 A preserving jar consisting of an outer jar recessed at its upper end to form a seat adapted to receive freely a cover and further recessed to form a second seat. below the first one, the lower seat being apertured, and

an inner jar having an exterior lip adapted to rest on the said lower seat clear of its apertures and suspend'the inner jar therefrom.

Dated at Vancouver, B. C, this lst day of August, 1919.

ARTHUR EGGLETON WORSTER;

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