US1767512A - Cap closure - Google Patents

Description

June 24, 1930. w. P. COHOE- CAP CLOSURE File d June 18, 1926 Patented June 24 1930 UNITED STATES PATENT OFFICE warmer: ra'rrnn conon, or mvEnnaLn-oN-rnn-nnnson, NEW YORK, assrenon 'ro WALLACE P. COHOE & COMPANY A CORPORATION OF NEW YORK car cLosunE Application filed June 18,

My invention relates to an improved form v of closure for sealing the openings in bot- 'to the same. More particularly, the object of my invention is to avoid the slow drying of the wet cap where the cap, being'made out of aflat disk, has, when formed therefrom, a thick body of the material at the turnedover edge, causing an accumulation of moisture therein which delays the drying of the cap unnecessarily. A further object is to apply a protective material to the skirt of the cap so as to further diminish the amount of moisture to be removed therefrom in the final drying of the cap. Further objects of my in-.

vention will appear from the detailed description of the same hereinafter.

While my invention is capable of being carried out in many different ways, by way of illustration-I have shown only one way of carrying out the same in the accompanying drawings in which Figure 1 is a side elevation of a milk bottle carrying a cap made in accordance with my invention; and 4 Figure 2 is a vertical section through the same.

In the drawings I have shown a milk bottle 1 having an opening 2 at the top of the same which is closed by a cap 3 having a depending skirt or flange portion 4 surrounding the edge of the mouth of the bottle. It will be noted thatethe depending flange or skirt 4 has at its lower edge a series'of serrations or indentations 5 to enable the cap to more effectively contract against the edge of the mouth of the bottle and, also, to prevent 1926. Serial No. 116,824.

the formation at this part of the cap, of a thickened portion of t disk, and, furthermore, to obviate as far as possible the accumulation of moisture at this point in the cap, which would be diflicult to remove. If desired, furthermore, I may impregnate or coat this part or the whole of the cap 3 with a waterproofing material such as a waxy or resinous body. When such waterproofin material is applied this is preferably apphed merely to the skirt or flange 4 by-dipping the same into a composition comprising ordinary rosin or colo hony in a fused condition, before the cap is applied to the bottle. Preferably, also, the waterproofing material will have become e paper of the cap due to its havlng been formed from a flat dry or hardbefore the cap has been applied to the bottle. Thereafter, the cap 3, which is made of paper, fiber, or similar material, will be coated either beforeitsapplication to the bottle or after, and either on the inside or outside, or both, with an aque-' ous cellulose solution. The aqueous cellulose solution is preferably a solution of viscose but may, if desired, be any other aqueous solution of cellulose as, for example, a 011'- prammonium solution or a zinc chloride solution. Furthermore, it will'be understood that'the entire ca may-be so treated with the a ueous'cellu' ose solution, or only the depen ing portion 4 which surrounds the edge of the mouth of the bottle.- The cap 3, after havin had the aqueous cellulose solution applie as above, is applied to the bottle either before or after the said solution of cellulose has been coagulated by any one of the well-known methods. Thereupon, the film of aqueous cellulose solutionjvill contract and' cause the cylindrical portion of the cap to contract likewise. Asa result a tight closure of the bottle, or other container, is

effected -and this will retain the contents of' the milk undisturbed and free from tampering until it reaches the ultimate consumer.

affected by water, however, in this condition,

it is desirable to subject it'to heat so that Inasmuch asthe aqueous solution would be heating tool to the cap or around the edge of the same, but especially over the skirt portion 4, said tool being heated to a temperature of at least 115 to 130 C. As a result, not only is the waxy or resinous material molded to fit the neck of the bottle so as to tend to hold the cap in position, but the aqueous cellulose solution, as a result of the heat, loses a suflicient amount of water to form a horny substance incapable ol?v thereafter bein aflfected b water. It will be understoo however, t at in the case where the waxy or resinous material has been applied to the skirt portion 4 of the cap it is desirable to have the whole flange or skirt of the cap dipped in or coated by the aqueous cellulose solution in order to completely cover the waxy or resinous coating so as to prevent the waxy or resinous material from adhering to the bottle and to the heating tool which is applied to the outside of the same. Furthermore, it is to be understood that it 1s particularly desirable, that where the waxy or resinous material has been applled to the skirt portion 4 of the cap, to have the aqueous cellulose solution extend to a point at least above the upper edge of the coating of waterproofing material so as to completely enclose the same and to obtain a good bond between the cellulose solution and the paper of the cap. In any event it Wlll be understood that the serrated edge 5 of the cap will have its serrations filled with the aqueous cellulose solution so that, as a result, the portion 4 of the cap is formed into a slltted contractual ring which grips the bottle and forms a tight closure therewith. The whole procedure materially shortens the time required for completely applying the cap to the containers.

It will be understood, however, that, if deslred, 1n the case where the waterproofing coatlng o f waxy or resinous material has been applled, the serrations 5 of the cap may be omitted, in which case the plastic skirt of the cap 1s molded to fit the bottle by the hot tool and the cellulosic coating prevents the reslnous plastlc material from sticking to the bottle or to the tool.

- Wlth this form of closure, in order to gain access to the bottle it will be necessary to destroy the closure to a greater or less extent.

While I have described my inventionabove in detail I wish it to be understood that many changes may be made therein without departing from the spirit of the same.

I claim:

1. A container closure having a slitted engaging portlon coated with an aqueous cellulose solutlon extending between the slits therein that has'been coagulated, said engaglng portlon belng contracted by the cellulose of the solution extending between the sllts to seal the container.

2. A container closure having a slitted en'- gaging portion coated with an aqueous cel lulose solution extending between the slits therein that has been coagulated and rendered partially anhydrous and horny in character so as to be unable to expand when wetted, said engaging portion being contracted by the cellulose of the solution extending between the slits to seal the container.

' 3; A circular bottle cap having a slitted engaging portion coated with an aqueous cellulose solution extending between the slits therein that has been coagulated, said engaging portion being contracted by the cellulose of the solution extending between the slits to seal the container.

4. A circular bottle cap having a slitted engaging portion coated with an aqueous cellulose solution extending between the slits therein that has been coagulated and rendered partially anhydrous and horny in character so as to be unable to expand when wetted, said engaging portion being contracted by the cellulose of the solution extending between the slits to seal the container. 1

5. A container closure having a slitted engaging portion coated with a viscose solution extending between the slits therein that has been coagulated, said engaging portion being contracted by the cellulose of the solution extending between the slits to seal the container.

6. A container closure having a slitted engaging portion coated with a viscose solution extending between the slits therein that has been coagulated and rendered partially anhydrous and horny in character so as to be unable to expand when wetted, said engaging portion being contracted by the,cellulose of the solution extending between the slits to seal the container.

7. A circular bottle cap having a slitted engaging portion coated with a viscose solution extending between the slits therein that has been coagulated, said engaging portion being contracted by the cellulose of the solution extending between the slits to seal the contain- 8. A circular bottle cap having a slitted engaging portion coated with a viscose solution extending between the slits therein that has been coagulated and rendered partially anhydrous and horny in character so as to be unable to expand when wetter, said engaging portion being contracted by the cellulose of the solution extending between the slits to seal the container.

9. A container closure having a slitted engaging portion coated with a waterproofing material and an aqueous cellulose solution extending between the slits therein that has been coagulated, said engaging portion being contracted by the cellulose of the solution extending between the slits to seal the container.

10. A container closure having a slitted engaging portion coated with a waterproofing material and an aqueous cellulose solution extending between the slits therein that has been coagulated and rendered partially anhydrous and horny in character so as to be unable to expand when wetted, said engaging portion being contracted-by the cellulose of the solution extending between the slits to seal the container.

11. A circular bottle cap having a slitted engaging portion coated with a waterproofing materialand an aqueous cellulose solution extending between the slits therein that has been coagulated, said engaging portion being contracted by the cellulose of the solution extending between the slits to seal the container.

12. A circular bottle cap having a slitted engaging portion coated with a waterproofing material and an aqueous cellulose solution extending between the slits therein that has been coagulated and rendered partially anhydrous and horny in character so as to be unable to expand when wetted, said engaging portion being contracted by the cellulose of the solution extending between the slits to seal the container.

13. A container closure having a slitted engaging portion coated with a Waterproofing material and a viscose solution extending between the slits therein that has been coagulated, said engaging portion being contracted by the cellulose of the solution extending between the slits to seal the container.

14. A container closure having a slitted engaging portion coated with a waterproofing material and a viscose solution extend- .ing between the slits therein that has been coagulated and rendered partially anhydrous and horny in character so as to be unable to expand when wetted, said engaging portion being contracted by the cellulose of the solution extending between the slits to seal the container.

15. A circular bottle cap having a slitted engaging portion coated with a waterproofing material and a viscose solution extending between the slits therein that has been coagulated, said engaging portion being contracted by the cellulose of the solution extending between the slits to seal the container.

16. A circular bottle'cap having a slitted engaging portion coated with a waterproofing material and a viscose solution extending between the slits therein that has been coagulated and rendered partially anhydrous'and horny in character so as to be unable to expand when wetted,'said en agin portion being contracted by the cellulose o the solution extending between the slits to seal the container.

In testimony that I claim the foregoing, I

have hereunto set my handthis 14th day of I June, 1926.

WALLACE PATTEN COHOE.

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