US2072149A - Container - Google Patents

Description

March 2, 1937. J.. M. YOUNG CONTAINER Filed Jan. 23, 1933 ATTORNE Patented 1 937 7 UNITED s1- avian I P ENT OFFICE comma ohm-Mt Young Brooklym-,N. Y., assignor to American Can Company, New York, N. L, a

corporation of New Jersey 'A jucaubn January 23, 1933, Serial a 653,035

' aomma iol. zzo -ssy y A principal object of the invention is the provision of an end-closure adapted to hermeticale fly seal a container, adapted tobe readily applied to acontainer by a tight-fitting drive fit and adapted to permit the escape of air from the inm terior of the container when the air displaced application to by the closure during its rapid the container.

Another important object of the invention is the provisionof an end closure having a depend- 'ing container engaging drive fit flange, generally like structure showniand described in my co.-

pending application, Serial No; 377,145, filed July 18, 1929, (since issued into'Patfint NOL;

1,920,288) and provided with vertically arranged,

29 spaced and channeled ridges, constituting air vents, to permit the escape 'of displaced air.

within thecontainer and also' providedwith a weakening or score line to" permit removal of the flange by tearing, thereby releasing the tight 7 2g fitting drive fit closure to open the container and to also provide a reclosure. l

, Still another object of the invention, is the provision of an improved end closure which has a a scored depending flange and which utilizes the 3g inherent elasticity of the metal of the flange to produce a very tight drive fit (superior to a mere friction fit) connection between it and 'a portion of a container body which has a prede-- termined size, and which connection would per 35 mane'ntly resist disengagement except by sev- 'f erance oi the flange along a score line by means of a suitable key. i r 7 Numerous other objects and advantages of the invention will be apparent as it is better'under- 4B stood from' the following. description, which; taken in connection with the accompanying drawing, discloses a preferred embodiment thereof,

I Referring to the drawing; n 45 Figure 1 is a perspective view' of one kind of container to which the present invention is applicable; V

Fig, 2 is a cross-sectional view showing in fragmentary fashion the can body and closure.

at the beginning of the assembly operation:

Fig. 3 is a slmilarview, showing a later stage of the assembly;

Fig. 4 is a view showing: completion or he assembly; and

55' Fig. 5 is a fragmentary cross sectionalf vicw ,trated inthe copending application above' re fen'ed x showing the container and closure after removal tainer without going tothe trouble and expense of positive vacuumization. It hasbeen found that in applying the drive fit closure more or less rapidly by means of automatic pressure 7 mechanism, air which fills the head space com- 10 monly left in the container above the product and air carried down by the cup shaped end closure .is trapped, and compressed within the container, with the result that oxidation within the sealed container is considerably aided. It 5 was to substantially prevent this pressure and oxidation by providing means for' the escape of substantially all the air that the constructionillustrated herein was conceived'and devised.

To illustrate-"a preferred embodiment oi the 0 invention there is shown in the drawing a sheet metal container comprising a cylindrical body I I having a side seam i2, a bottom closure joined to the body in adouble seam l3, and atop closure "1..

The upper extremity of the body H is bent in- 'wardly, downwardly and outwardly to provide a rounded, annular top edge or curl l5.

Tne top closure It comprises a sunken panel it, a vertical wall l l, a rounded shoulder or recess 7,

it which merges :into a depending imperforate flange or skirt it, having an integral tongue e tension 21].

At the outer base of the shoulder or recess E8 the skirt or depending flange i9 is scored interiorly and annularly to provide a line of sev- 5 by means of a slotted key 2% removably-secured 4 l to the panel it in any suitable manner, as by spot welding. The usual' slot of the key is adapted to. engage the tongue 21, and thekey constitutes means for removal of the tearing strip and re- 7 lease of the cover by, the ,well known rolling of 5 the strip upon the key. v i To obtain the best sealing results from the improved closure itis desirable to have the annular sealin-g'area of the body I I, adjacent its top, of substantially'accurate predetermined diameter. This isaccomplished by a diesizing of the'container andiaccurately dimensioning the coverflange i9, as fully and clearly described and illus- The forcing or driving home of the cover over a the'ordinary' slip or friction cover and a container body. This is evidenced by the fact that after the cover I 4 is thus driven home over thebody II, the two cannotbe' separated except-by fracturing or tearing the expanded cover flange.

[9. This is preferably done by rolling up the tearing strip, defined by the score line 22 and'the flange edge 23, upon the key 24 in the usual and "'well known manner.

The closure It may be made hermetic by placing a gasket or lining compound 25in the closure recess It, as clearly illustrated in Figs. 2-5.- 25 When the closure I4 is forced into sealing engagement with the can body, this lining compound or gasket 25 is compressed between the top surface of the curl ii of the body and the inner surface of the closure recessor channel l8, and

the closure is thus made both liquid and air tight. After the container body II has been filled construction and arrangement of the partswithout departing from the spirit and scopeof the in-. vention or sacrificing all of. its material advantages', the form hereinbefore described being merely a preferredembodiment thereof. 6

I claim:

- l. The combination in a container, a container body-having a sealing area of predetermined diameter, a cover for said container having a depending flange of predetermined smaller diam 10 eter than said sea-ling area, and having a portion providing a tearing strip, said flange being adapted to be tensioned within the limits of its elas-' ticity about said sealing area to form a permanent seal with the container, said flange also being 15 bent to form passages for the escape of air during its application to the container. I 2., The coinbination'in a container, of a containerv body having a sealing area of predetermined diameter and a cover having a drive flt' flange of smaller diameter than said sealing area and adapted to be stretched within its elastic mined diameter and a'cover' having a drive flt .with a product 26 to a level extending to within a short distance below the curl l5, so as to leave the usual headspace 21, the closure M is brought in alignment with and is applied to the containe'r body, asdescribed see Figs; 2-4). This cover applying operation is accomplishedv by pressing the cover down over the open-end of the can body in a metal to metal drive flt which is permanent 40 until the tearing strip is removed to release it; asshown in Fig. 5. .As the cover It telescopes with the topfjof the container, the head-space initiallly provided is reduced untilthe cover is fully seated. Inorder be placed under compression as the cover-is driven, home, means are provided for venting this space until or substantially until the end of the telescoping movement. These means comprise 'one' v or more hollow ridges or ribs 28 vertically ar- .45 that the air above the contained product may not ranged in spaced relationship about the periphery" *Each hollow ridge or rib extends perpendicularly from just beneath th'e score line 22 to the 'edgeji of the flange I 9, is pressed out 'from the metal of the flangeprei'erably by the same die which produces thecover, and? forms an air vent or air escape channel 29 permittingair to escape from the time'the cover is initially engaging the 80 top of the body I I, as shown in Fig.2, through the partially applied stage'as" shown in Fig.3, until .iust before the cover is fully driven home into the container.

hermetic sealing engagement with body. as shown in Fig. ;4.'

When the metal to metal driv fit se'aibetainer body is released by winding the tearing a. ween the strtched cover flange" and the con-"- str'ip upon the lgey 2.4; there is left,. as shown-in lyig. 5, a short flanged reclosure which serves 70 the purpose of a cover until the container has been emptied of its entire contents. '1

.. It is thought that the invention and many '01 its attendant advantages will be understood from the foregoingdescription, audit will be apparent 75 that various changes may be made in the form,

flange of smaller diameter than said sealing area and adapted'to be stretched within its elastic limits over s'aidcontainer sealing area when applied to said container, said flange having up-' wardly and downwardly extending air'pas'sages 35 arranged about'its periphery to permitescap'e of 1-,

air during the/application of said cover. 1

4. The combination in a container, of a container bo dy having a sealing area of predetermined diameter and a cover having wall of smaller diameter than said s aling area and adapted to be hermetically sealed with an, end of said container when applied to the latter, and an outwardly xtruded air passage constitut ing an )integral partof said wall to permit escape. of air during-the forming of the drive fit and until sealing of the cover to'the container. s

.- "5. 'I'hecombination in a container, of a con-' ,tainerbody having a sealing area of predetenmined diameter and a" cover having a depending 5 member having a sealing area of predetermined diameterand a cover memberhaving as depending wall of smaller diameter than said sealing area and adapted to be brought into sealing engagement with said body member. one of. said members being formed with an. elongated air passage of an extent substantially equal to the'vertical dimension of the area of said body member which is engaged by said cover wall whereby to permit I 1 escape of air from .the container'until the sealing operation between the cover and bodymember is completed; 7

" 7. The combination in a container, of a'container body having a' sealing area of predetermined diameter and a cover having a drive flt wall of smaller diameter than said sealing area and depending 40' adapted to be brought into sealing engagement with the container wall when applied thereto, and an air passage between said walls to permit escape or air during the sealing of the cover to the containe'r. j

.8. The combination in a container, of a contamer body having a sealing area of predeter mined diameterand a cover having-a depending flange of smaller diameter than said'sealing area and adapted to be hermetically sealed with an endof said container in a drive fit, a sealing gaske within said cover and an outwardly ex- .trude air passage constituting an integral part c of said flange and disposed beneath said gasket to permit escape of air until said gasket comes into hermetic sealing engagement with said container.

JOHN M. YOUNG.

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