US1685744A - Bottle seal and method of finishing the same - Google Patents

Description

Jl. 0. HAS

LOWAL BOTTLE SEAL AND METHOD OF FINISHING THE SAME Filed Dec. 18, 1926 W l TNESSES isp,...

I N VEN TOR: M013/ Mmy 8" mfg ATTORNEYS.

llatentenl helpt.. d, lldh..

application tied mecemter itt, 19%. terial tto. ltttt.,

to disks in connection with metallic bottle caps,

or as gaskets for preserving bottles, etc. .hs a result of the porosity of the cork, the liquid contents of the bottles stoppered with seals of this kind are often ruined either from conf liti tamination by unsanitary vegetable or other matter contained in the pits or pores, by access of the fluids to the metal of the cas, with resultant chemical interaction, or y air from without-any or all ofwhich are 2@ likely to alfcct the quality or taste of the contents. Various `expedienta---such as constructing the seals of composite layers,'em ploying interposed layers of paper, metallic foil, or coatings of wax-have heretofore 2t been resorted to in attempting to otset the ttl penetration of the seal either by air or the contents of the bottles; `lout these have, for ,various reasons, been found more or less un reliable and therefore unsatisfactory.

'llhe objects of myinvention are to overcome the various difficulties and objections noted, and to provide an inexpensive, yet emcient method of finishing the seals whereby the desired results can be easily attained. The drawings herewith illustrate by way `of example, how my invention may be practiced in hnishing the cork sealing disks of metallic bottle caps otherwise complete and assembled. Referring to the illustrations au separately, lig. l is a sectional view of a conventional form of bottle cap.

lEig. 1l shows the hrst step of my improved hnishing processn o f liig. lill is an end view of the tool shown llig. lll shows-thecap, after having undergone the hrst step referred to. f

Figs. l? and Vl arerespectively a sectional view and aP plan view of the cap after having t@ undergone the second and nal step of my process.

rlhe bottle closure, yshown inl l ofv these illustrations, comprises the usual crown-like metallic cap 10 with the corrutt gated periphery 11, and the inset disk of cork 12 secured either by gluing or through compression within the recess of the cap.. Assuming these parts to have been assembled 1n the customary manner, l .proceed with the finishing process in accordance with my into ventlon, by first subjecting the surface of the cork disk 12 to an abrading action. lior this purpose it is `convenient to employ a cylindric tool such as shown at 13 in Fig.

ll, thelower end lat whereof is reduced to at the diameter of the cork disk 12 and its bottom face ,coa-ted with Vsand or otherwise roughcned` as diagrammatically represented in Fig. lll. By relative motion as between the tool 13 andthe cap4 and by maintenance to of a certain amount of pressure therebetween, the surfaceof the cork l2 is not only Aroughened, but the grindings resulting from such treatment are worked into the pits or pores of the seal and incidentally closely t5 compacted therein, as conventionally indi-u cated at 16.. 'lhis initial treatment is continued for a periodl sufficient to insure complete tlling and stopping of the pits or pores shown in ltig.v lill'.

With the sealing disk thus prepared, l next apply a thin coating of a suitable quickcongeallng chemically-inert colloidal soluwhereupon the bottle closure will appear as eo tionsuch for example ask celluloseto'foim aa a fluid-impervious protective skin 17 over the central part of the disk, leaving lout a narrow circumferential margin 18 of raw cork exposed for contact with the bottle mouth, seeligs. if and Vl. By application o@ ofthe colloid in diluted or liquid form, the same not only attaches itself effectively to the roughened surface of the sealing disk, but penetrates the pulverized cork in the pits or poresand insures the filler against subsepy,

quent disintegration and dislodgrnent.

With the cork pores thus lled up and the skin coating applied, the' surface of the seal-- ing disk is rendered absolutely impervious to the duid contents of the bottle (which may be eitherfliquid or gaseousiwith which the n closure is used, therebyodsettingthe -,rossibility of contamination either from vegetable or other matter originally in the pores, or

chemical interaction with the metal of the cap, or by air leakage from without.

ltis of course to be understood that in.

lieu. of the ground cork and cellulose colloid specifically hereinbefore mentioned, any

other chemically-inert-filler or coating havjaar Cil ing resilient pro erties comparable to that of the cork itsel may be employed for the 'pur oses of my invention. Also, lif desired,

plicable to other types of closures constructed either Wholly or partly of cork.

Having thus described my invention, I

`claim l. A cork seal having its surface abraded and its pit holes or pores stopped with the pulverulent cork resulting from the abrasive action.

2. A cork seal having itssurface roughened and its pit holes or pores stopped with the pulverulent cork resulting from the roughening treatment, and coated with a Huid-impervious colloidal skin, to prevent dislodgment or disintegration of the pulverulent cork.

3. A cork seal having its pit holes or pores stopped with compacted pulverulent filling, and its surface, except for a circumferential marginal portion adapted to contact with the container mouth, coated with a fluid-impervious skin of congealed colloidal solution.

4. A bottle closure including a metallic cap wth'an inset cork sealing disk, the pit holes or pores of said disk stopped with' compactfd ground cork, and its surface, except for a circumferential marginal portion adapted for contact with the lbottle mouth, coated with a fluid-impervious skin of congealed colloidal solution.

5. The method of finishing sealing cork by abrasion of the cork surface to provide powdered cork for incidental filling of the pit holes or pores.

6. The method of finishing sealing cork by packing its pits or cores with chemicallyinert pulverulent material, and surfacing the cork with a fluid-impervious skin of congealable colloidal solution.

7. The method of finishing sealing cork by abrasion of its surface to provide powdered cork for incidental iilling the pit holes or pores, and at' the same time to roughen the surface for better retainment of. a subscquently applied fluid-impervious skin of congealable colloidal solution.v

8. The method of finishing metallic bottle caps with 4inset cork sealing disks, by subjecting said disks, while in the caps, to abrasive act-ion to provide powdered cork for incidental filling the pit holes or pores, and thereafter applying a Huid-impervious skin of congealable colloidal solution over the roughened filled surface.

9. A cork seal having its pit holes or pores stopped with a compacted pulverulent filling.

10. A cork seal for a bottle having its pit holes or pores stopped with a compacted filling of ground cork.

11. A method of finishing sealing cork by packing its pits or pores with a chemicallyinert ulverulent material.

l2. he method of finishing bottle scaling cork by packing its pits or pores with ground cor r.

In testimonyb whereof, I have hereunto signed my name lat Philadelphia, Pennsylvania, this 14th day of December, 1926.

JACKSON O. HAAS.

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