US1280021A

US1280021A - Process of sealing jar-closures.

Info

Publication number: US1280021A
Application number: US147743A
Authority: US
Inventors: Charles Hammer
Original assignee: AMERICAN METAL CAP CO
Current assignee: AMERICAN METAL CAP Co
Priority date: 1915-03-03
Filing date: 1917-02-10
Publication date: 1918-09-24
Anticipated expiration: 1935-09-24

Description

C. HAMMER.

PROCESS OF SEALING JAR CLOSURES.

APPLICATION FILED FEB. I0, 1911. RENEWED APR. 18. 1913.

Patented Sept. 24, 1918.

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PROCESS OF SEALING JAR CLOSURES.

APPLICATION FILED 758.10, I9i7- RENEWED APR. 18.1918.

1,28,Q21 a Patented Sept. 24, 1918.

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PBOGESEs' 0F SEALII-IG JAR-GLQSURES.

Specification of Letters Patent.

Patented Slep 2451 191?, serial lilo. HEM-'3. Renewed April 18, 1918. Serial No. 5229, 216.

To all whom it may concern."

Be it known that T, CHAnLns HAMMER, a citizen of the United States, and resident of Brooklyn, in the county of Queens and State of New York, have invented certain new and useful Improvements in Processes of Scaling Jar-Closures, of which the following is a specification.

This application is a division oi an application filed by me on March 3, 1915, Ser. No. 11,932. in such application the closure is claimed, while the present application is directed to the process of applying the closure to a jar.

The object of the present invention is to provide an arrangement, whereby upon placing the closure on the jar top and sub jecting it to a downward pressure on the portion extending beyond the jar, the flange will be bodily moved both downwardly and inwardly, at such portion, while the part of the closure above the edge of the jar will have a slight outward and downward movement; which operation, effected by drawing means, will draw upwardly on the central portion and will reduce its curvature, and area by such operation, considered beneath a plane contacting with the top of the closure.

In the accompanying drawings illustrating embodiments of my invention, Figure l is a vertical section through the closure at one side thereof. Fig. 2 is a similar view of a slight modification. Fig. 3 is a- View similar to Fig. 1, showing the jar at the top, with the closure as first applied. Fig. 4 is a view of the parts shown in Fig. 3 with the closure in the final sealing position. Fig. 5 shows a modification, as first applied, and Fig. 6 the same in sealing; position. Fig. 7 shows another modification, and Fig. 8 shows the latter in sealing position. Fig. 9 is a vertical section through a portion of a chuck for applying the closure to the jar; and Fig. 10 is a partial View of the chuck, showing the final position in sealing the closure on the jar.

As shown in the drawings, the closure comprises a. central portion 12 comparatively fiat, see Figs. 1 and 9, that extends upwardly at 13, and then forms a rounded arch portion i l. The flange portion 15 extends downwardly and outwardly to form a depending annular conical flange. The lower outer wall or" the of the closure,

BROOKLYN, NEW .Z'QlPlli.

ividcd and this application filed February re,

margin of the flange is preferably first bent outwardly as at 16, and then bentinwardly,

whereby to form on the inner face of the flange.

a channel portion l7 open Thus a closure is formed that is substantially con- .cave on the top lace inside of the flange.

A flat ring washer or gasket l8, yided that is prois placed against the inner wall of the flange 15, preferably extending downward from the 15, as indicated gasket preferably has its lower edge middle of the arch portion in Figs. 1, 3 and 9. This extended into the channel 17, that may be done hetore the channel is brought to the final position, that the channel can be slightly closed on to the edge of the gasket to cornpress and secure it in the desired position.

The closure is so designed relative to the dimensions or the thereon the top of the ar will middle portion of the jar 19, that when placed I l '1 gasket, as inuicateo age the in Figs. 3 and 9. Thereupon, pressure is brought against tion 16 of the closure, flange portion 15, in This will have the effect of forcing the projecting channel porand also the divergent a downward direction. the do sure down on the jar, and will alsodraw downwardlyand inwardly on the flange and channel portion of the closure, as wil derstood by comparing Fig. l and and 3. Such d the arch portion 1a to also downwardly.

The gasket or will be thereby compressed and will l he un- 'awing operation will cause move outwardly, and

washer assume the shape of the jar wall on its inner face, and be very tightly compressed between the flange and the outer wall of the 19. This compression will also have the effect of forcing the gasket somewhat inwardly at the arch portion ll, whereby it will be also compressed between the top of the ar and the arch portion, as shown in Figs. 4: By comparing Fig. ll with F 1g. 3, it

and 10. will be seen that the flange is somewhat lengthened, and this is the result of the drawing operation causing a movement or flowing of the portion of the closure, inside of the arch porin Fig. l is less than the sat. e distanc it will Both the fiat portion 12 and the the closure to peri be oh central closure,

u. em

ured in Fig. 3; being indicated at l in dc,' and at 3 in Fig. 3.

One form of means for producing such a drawing operation to seal the closure on the jar is indicated in Figs. 9 and 10; comprising essentially an annular chuck member 20, inside of which slides a pad or block 21, and which preferably has resilient connection with the chuck. As shown the pad slides on

bolts

22, 22 that limit its downward movement, caused by the coil spring 23. The chuck 20 is provided with a shoulder portion at 2st in its inner wall, and below this the lower edge 25 of the chuck is preferably divergent as shown. The pad that slides in the chuck is shown as having a comparatively shallow annular groove 26 near its margin, inside of which the bottom of the pad is slightly convex as shown at 27.

W hen the closure is placed upon the jar by hand, it is brought to engage the chuck, and downward pressure is applied on the chuck, that will engage the closure as indicated in Fig. 9. The flange 15 and channel portion 17 are first engaged by the shoulder portion 2& of the chuck, that will force the closure down on to the jar and the flange will be forced inwardly against the outer face of the ar. Thereupon the pad will be carried down against the closure and then can W ield and slide upward relative to the chuc r. The pad will engage the closure first directly at the central portion and then at the top of the arch portion 14:, with a yielding pressure. Thislwill permit the upward movement of the central portion of the closure adjacent th portion 13 that will be drawn upward against the pad upon continued downward movement or" chuck 20. The pad at the groove portion 26 will assist in forcing the flange portion of the closure downward, and in compressing the gasket against the wall of the jar, as indicated in Tu Fi 5 is shown a slight modification in which the gasket 30 is placed inside of the flange 31 to extend upward a shorter distance, and is made tapering as shown, whereby when the closure is placed on the jar, the

top edge or the jar will engage the arch portion 32 of the closure. The sealing of this form of closure and gasket is shown in Fig. 6, wherein it will be observed that the gasket does not lie between the top of the jar and the closure but merely along the side.

flange 38, is more nearly of a uniform curva-- ture. lln Fig. 8 this form 0r closure is shown in sealing position.

It will be understood that my form of closure distinguishes from those at present in use, in that the projecting flange of the closure is drawn downwardly or lengthened at the same time that it is forced inwardly, which is effected by so shaping the central portion that the part of the closure immediately above the jar edge can be drawn outwardly, and the adjacent central portion drawn outwardly and upwardly, whereby the central portion of the closure is raised to a certain extent.

What I claim is The method of applying, to a container provided with a substantially straight outer wall at the top and a substantially rounded top edge, a cap-shaped closure provided with a continuous annular flaring flange lined with a compressible ring washer, such method consisting in yieldably holding the closure seated on the container by a member engaging its top portion while at the same time causing a' pressure in a downward direction by a continuously annular member that is independently movable to reshape the cap and then apply pressure inwardly, on the flange to reform the flange by a downward and inward movement of the flange to t compress the washer between the flange and the wall of the container.

CHARLES Hedi HER.

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