US732655A - Jar-closure. - Google Patents

Description

. No. 732,655. v PATENTED Jrmnso, 1903..

v J. H. SAUNDERS. JAR CLOSURE.

APPLICATION FILED MAR. 12, 1903.

10 MODEL.

UNITED STATES Patented June 30, 1903.

PATENT OFFIC JAl-hCL'OSURE.

SPECIFICATION forming part of Letters Patent N 0. 732,655, dated June 30, 1903. v Application filed March 12, 1903. Serial No. 147,602. (No model.)

To all whom it may concern:

Be it known that I,JOH HALEY SAUNDERS, a citizen of the United 'States, residing at Olympia, in the county of Thurston and State of Washington, have invented a new and useful J ar-Olosure, of which the following is a specification. V

My invention relates to jar-closu res, and has for its objects to produce a device of this character which will be simple of construction, efiicient in operation, inexpensive to manufacture, and one which is especially adapted for use upon jars for preserving fruit or the like owing to its adaptability for permitting the escape of the gas which forms during the cooling of the fruit and its ready and thorough sealing.

To these ends the invention comprises the novel details of construction and combination of parts more fully hereinafter described.

In the accompanying drawings, Figure l is a perspective view illustrating the parts of the closure disassembled. Fig. 2. is a fragmentary side elevation of the upper end of a jar, showing the closure in position thereon.

Fig. 3 is a detailed sectional view taken on the line 3 3 of Fig. 2.

composed of glass or other suitable vitreous material provided at its top with a reduced portion 2, which has formed at its upper edge suitable laterally-projecting lugs or'ears 3, which engage With bayonet-slots 4, formed on the inner vertical face of a clamping ring or member 5 for clamping the cover 6 onto the top of the jar, as more fully hereinafter described.

The cover 6 is provided with a peripheral depending flange 7, which when the cover is in position on the jar fits snugly over a reduced portion 8, formed at the upper end of the jar, and bears at its lower edge 9 upon a horizontal shoulder 10, formed by the reduced portion 8. The shoulder 10 has formed circumferentially around it a central groove 11, and the lower edge 9 of the cover-flange has formed therein a similar groove 12, which when the cover is in position registers with the groove 11, as clearly shown in Fig. 8, to

has formed thereon a circumferential recess 14:, which extends from its periphery inward a suitable distance to receive a horizontal inwardly-projecting flange 15, formed upon the top of the clamping-ringo when the parts are in the position shown in Fig. 3, at which time the lower edge of the clamping-ring will bear upon alowershoulder 16, formed by the reduced portion 2, over which the clampingring snugly fits. 1

The ring 5 has formed through its vertical wall a plurality of elongated perforations 17, through which the abutting edges9 of the cover-flange and the horizontal shoulder 10 and the packing-ring which is clamped between them can be viewed, while at the same time these perforations serve the additional function of permitting the engagement of a tool for turning the ring. p

18 is a transverse ridge formed on the upper face of the cover 6, the function of the ridge being to permit firm engagement of the cover by the hand of the operator to prevent rotation of the cover while manipulating the parts to close the jar.

In practice the packing-ring 13 will be I placed in position in'the groove 11 of shoulder 8, and the cover 6 will be seated over the reduced portion '8, with the groove in its lower edge resting upon and partially receiving the packing-ring. The clamping-ring 5 will then be seated in position over the cover, with its bayonet-slots 4 properly engaging the lugs 3 on the jar. With the parts in this position it is obvious that by pressing upon the cover 6 with one hand and turning the ring in the proper direction with the other the lugs 3, traveling upward in the slots 4, will draw the ring downward, thus drawing the cover 6 downward toward the top of the jar and clamping the packing-ring between its loweredge and the shoulder 8. In this connection it is to be noted that owing to the operators hand engaging with ridge 18 turning of the cover is prevented, and the same moves directly downward without rotation, thus acting to compress the packing-ring with a direct pressure, which obviates stretching the ring longitudinally and attendant plaiting and wrinkling of the same, and, further, that during the clamping action the packingring and the parts between which the same is clamped can be readily viewed at all times through the perforations 17, thus insuring proper and effective sealing of the jar, while at the same time the grooves formed in the lower edge of the cover and its bearing-shoulder prevent lateral displacement of the ring. It is further to be noted that the perforations 17 serve the additional function of permitting the escape of the gas which accumulates in the jar during the cooling of the fruit, it being in practice the custom before finally sealing the jars after cooling to loosen the jarclosure sufficiently for the gas to escape, and with the old-style jars it is necessary to loosen the closure considerably, whereas by my device a slight backward turn of the clampingring previous to final sealing of the jar is sufficient to permit the gas to escape through the perforations 17.

Having thus described my invention, what I claim is 1. The combination with a jar, of a cover therefor, a packing interposed between the cover and jar, and a clamping-ring of the rotary interlock type movable independently of the cover and operable for drawing the latter directly downward upon the interposed packing, said ring being provided with a plurality of perforations through which the packingring may be viewed.

2. The combination with a jar having a reduced portion forming a shoulder, said shoulder provided with a circumferential groove,

JOHN HALEY SAUNDERS.

Witnesses:

GEORGE S. UMPTELY, MILLER G. ROYAL.

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