US1546571A - Jar closure - Google Patents

Description

July 21, 1925.

E. A. DEWALD JAR CLOSURE Filed May 22. 1924 .1 mn'ii'iiliin [hljJiiiljlm 2 mmnimlmum Patented July 21,1925.

EDWARD A. DEWALD, O]? MASSILLON, OHIO.

JAR CLOSURE.

Application filed May 22, 1924. Serial No. 715,078.

To all whom it may concern:

Be it known'thatl, EDWARD A. Beware, a citizen of the United Eltates, residing at Massillomin the county of Stark and State of Ohio, have invented certain new and useful Improvements in Jar Closures, of which the following is a specification.

This invention relates to jars of the type used for canning purposes, and more especially to a novel construction of closure for the jar.

The object of the present improvement is to provide a jar closure which forms an air tight seal between the lid and the mouth of the jar, the usual standard rubber packing ring being compressed between the mouth of the jar and the lid; the central portion of the lid extending into the mouth ct the jar, thus permitting the jar to be completely filled with liquid, eliminating the possibility of an air pocket; the lid being ar ranged to be easily and readily placed upon or removed from the jar, and to be tightly retained in place when applied to the jar.

The above and other objects are attained by providing a pair of diametrically opposed flanges around the neck of the jar, each flange having its under side inclined from one end toward the other and terminating at the larger end in a depending projection; a flanged lid being arranged to ere tend into the mouth of the jar, a standard rubber packing ring being compressed be tween the flange of the lid and the rim of the mouth, the lid having a ball race in its top face near the periphery to receive a pair of glass balls carried in a metal yoke, provided with inclined feet for contact with the inclined under sides of the flanges upon the jar neck.

An embodiment of the invention thus described in general terms, is illustrated in the accompanying drawing, in which- Figure 1 is a vertical, sectional view of a jar provided with the improved closure;

Fig. 2, a side elevation of the tion of the jar;

Fig. 3, a similar view substantially at right angles to Fig. 2; a

Fig. 4C, a plan view of the jar;

Fig. 5, a plan view ofthe lid; Igig. 6, a bottom plan view of the yoke; an

7, a transverse, sectional view of the upper por- Similar numerals refer to similar throughout the drawing.

The improved jar is illustrated at 1 and provided with the reduced neck 2 around which are located the diametrically opposed, peripheral flanges 3, the neck terminating in an annular rim 4 surrounding the mouth 5.

The under side of each tlangeB is inclined downward from one end to the other as shown at 6, the smaller end of the flange being preferably tapered as at 7, the larger end terminating in the depending projection 8.

The present jar closure includes the lid 9, which is preferably molded glass having the annular flange portion 10 arranged to seatnpon the rim l of the mouth. The central portion 11' of the lid isadapted to extend into the mouth of the jar toprevent an airspace between the contents of the jar and the lid; and for sealing the jar, the usual standard packing ring 12 is preferably placed upon the rim of the jar, forming a seal between the lid flange and the rim of the jar. i

A concentric raceway 18 is formed in the top of the lid 9, near the periphery thereof, and for the purpose of reducing the weight of the lid, the central portion of the upper face thereof may he cut away as shown at 14. i

p arts illustrated in Fig. 1, the flange 10 of the lid projects beyond the rim of the jar mouth, permitting the entrance of a knife or similar tool between the lid and the adjacent flange 3, the flange acting as a fulcrum for the knife in prying the lidfrom the jar.

For the purpose of clamping the lid on the neck of the jar, a yoke 15, preferably stamped from a strip of open hearth, drawn steel, is provided. This yoke comprises the central channel portion 16, the lower edges of which are provided at opposite end portions with the inturned lugs 17 for retaining the glass balls .18; and the depending leg portions 19 which are preferably flared in, width at their lower ends and provided with the inclined L-flanges 20, which are preferably concaved. and adapted to engage and operate under the inclined, annular flanges 3 of the jar.

The concaved inner edges of the L-flanges 2-0, will assist in quickly centering the yoke upon the ar neck, and will prevent sidewise displacement of the yoke.

For the purpose of strengthening the legs 19 of the yoke, a rib 21 is formed in each leg,

merging into the central portion of tlie vane" ring 12 being located between the annular flange 10 of the cover and the run at of the mouth of the jar. The yoke is then slipped vertically over the neck of the ar, the legs thereof being received in the cut-out portions 23 between the ends of the flanges 3, the balls 18 being received in the raceway 13 of the lid.

The yoke is then rotated around the neck of the jar, being turned toward the right, the L-flanges 20 thereof engaging and operating under the inclined lower faces of the annular flanges 8 of the As the yoke is rotated, the balls 18 will travel around the raceway 13 of the lid, preventing rotary movement of the lid with relation to the and leaving the lid stationary.

As the L-flanges 20 are moved toward the lower or larger ends of the annular flanges 3 of the jar, the lid will be tightly clamped upon the mouth of the jar, compressing the rubber packing ring between the flange 10 of the lid and the rim e of the jar, forming an air tight seal at the joint.

The depending projections 8 at the lower or larger ends of the annular flanges 3, act as reverse stops to prevent the yoke from being turned beyond the disengaging position when the yoke is removed to open the jar.

In assembling the lids upon the jars for shipping, considerable time and labor may be conserved by placing the rubbers inside of the jars and clamping the glass lid directly upon the rim of the jar mouth, the L-flanges 20 of the yoke engaging the under sides of the depending projections 8 at the lower or larger ends of the flanges 8, thus tightly clamping the glass lid upon the jar. without the necessity of placing the rubber upon each jar lid. 7

From the above, it will be obvious that a very simple and etiicient jar closure is provided. The ball race being located near the periphery of the lid, causes all of the clamping power to be ever-ted almost directly above the rim of the jar mouth, This permits the glass lid 9 to be of very light weighh and the ball race itself forms a corrugated structure which tends to strengthen and reinforce the glass lid. ii

By providing the glass lid with the central portion arranged to project into the mouth of the jar, the lid is easily centered upon the inouth of the and the formation of an air pocket in the n'iouth of the jar is prevented. lhe glass lid being exposed to view, permits inspection of the contents of the jarthrough the top.

l claim l. in combination with a jar having a pair of inclined, annular flanges around its neck portion, a closure including a lid arranged to compress a packing ring upon th mouth of the jar, a l -shaped yoke having L-shaped legs for eng geinent with the inclined, annular flanges, and a ball carried by the yoke and movable longitudinally thereof for engagement with the lid.

2, In combination with a jar having a pair of inclined, annular flanges around its neck portion, a closure including a lid arranged to compress a packing ring upon the mouth of the jar and having a raceway in its upper face, a il-shaped yoke having l..-shapcd legs for engagement with the inclined, annular flanges, and balls carried by the yoke for engagement with the race way.

3. In combination with a jar having a pair of inclined annular flanges around its neck portion, a closure including a lid arranged to compress a packing ring upon the mouth of the jar, a U-shaped yoke having L-shaped legs provided with inclined flanges for engagement with the inclined, annular flanges, and a ball carried by the yoke and movable longitudinally thereof for engagement with the lid.

4:. in combination with a jar having a )air of inclined, annular flanges around its icck portion. a closure including a lid arauged to compress a packing ring upon the mouth of the jar and having a raceway in its upper face, a rl-shaped yoke hav ing L-shaped legs provided with inclined flanges for engagement with the inclined, annular flanges of the jar, and balls carried by the yoke for engagement with the raceway. v

5. in combination with a jar having a pair of inclined, annular flanges around its neck portion. a closure including a lid arranged to compress a packing ring upon the mouth of the jar and having a race way in its upper face, a ll shaped yoke having L-shaped legs for ei'zgageincnt with the inclined, annular flanges of the jar. balls ca ried by the yoke for engagement with the raceway, and means for preventing sideways displacement of the yoke.

6. In combination with a jar having a pair of inclined, annular flanges around its neck portion, provided with depending pro jections, a closure including a lid arranged to engage the mouth of the jar and having a raceway in its upper face, a U-shaped yoke having L-shaped legs for engagement with the depending projections upon the inclined annular flanges, tor clamping the lid directly upon the mouth of the jar, and balls carried by the yoke for engagement with the raceway.

7. A ar having a pair of inclined, annular flanges around its neck portion, a depending projection at the lower end of eachflange, and a closure including a lid arranged to compress a packlng rlng upon the projections upon the inclined, annular flanges forming stops to limit the opening movement of the yoke.

In testimony that I claim the above, I have hereunto subscribed my name.

EDWARD A. D WAL

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