US2369188A - Container - Google Patents

Description

E. 0. THEN Feb. 13, 1945.

CONTAINER Filed June 6 1941 2 Sheets-Sheet l ATTORNEYS Feb. 13, 1945. E. OQTHEN CONTAINER Filed June 6 1941 2 Sheets-Sheet 2 /7 /f Z6 ii? 17 /7 4Z2 (3 U z 26 Z; Iii: i i i INVENIOR $14 Aw: W.

ATTo'RNEYs Patented Feb. 13, 1945 UNITED STATES PATENT OFFICE I 2,369,].88 I i CONTAINER Edward 0. Then, Newark, N. .L, assignor to American Can Company, New York, N. Y., a

corporation of New Jersey I 7 Application June'G, 1941, Serial No. 396.930

4 Claims.

This invention relates to a sheet metal canor container having a tearing strip set oil by score lines cut in the outer wall fold of a body extension and has particular reference to anintegral hinge element located in a longitudinal soldered lock seam extending between the end-closure members which are secured to the body wall andto the body extension to provide a body of increased strength, the removal of the tearingv strip providing a hinged reclosure for the container.

dinally soldered lock side seam extending between end closure members secured to the body parts such as is described in my copending application of even date and identified by Serial Num-. ber 396,929,.now Patent No, 2,325,084.

The invention relates'to aconstruction of a hinged closure can in which the can body wall proper is fully locked and soldered so that the lock seam feature extends between the ends of the can. Such a can also is provided with an integral folded body extension which does not afiect'the full locking side seam principlefor the can throughout its entire height. The body extension in this can is cut away at the side seam and the usual solder applying operation mayfbe utilized in the manufacture of the can since the cut-away body extensionwalls are removed where the solder is being applied to the side seam. The hinging element includes hinge tabs formedintegrally with the body wall and secured into the end closure joint. a x a An object of the invention is the provision of a tearing strip container having a fully locked body,'the side seam of which extends from one end of the can to the other, such a can having an additional double wall body extension adjacent its upperend, and having hinge tabs struck. out from the body wall proper or from the body extension so that upon removal ,of the tearing strip in opening the can such hinge tabs become effec-, tive to produce a hinged reclosure member for the opened can. I

Another object of the invention is the provision of a can of the character described wherein the double folded body wall extension isucut away adjacent the side seam to permit application of solder for the fully locked side seam and wherein the hinging elements include a hinge tab projected from the body walladjacent such body exwalls of the body extension at the locked seam where it is secured in the upper end joint.

Numerous other objects and advantages of the invention will be apparent as it is better understood from the followin description, which, taken in connection with the accompanying drawings, discloses a preferred embodiment thereof.

' Referring to the drawings:

Figure 1 is a perspective view of the sealed container embodying the present invention; I

Fig. 2 is an enlarged fragmentary view showing the upper end portions of a flat blank from which the body of the container is made;

Fig. 3 is a fragmentary perspective view of opposite upper ends of the body blank. shown in Fig.

2 after being folded and after theblank has been formed into tubular shape and illustrating integral hinge tabs projecting from the body wall proper; I

Fig. 4 is a fragmentary face viewof that partof the container body shown in Fig. 3 after being locked,-lapped and joined together;

Figs. 5 and 6 are enlarged sectional details at the longitudinal joint of the container body, as

in a partially open position following the removal of the tearing strip; 1

Fig. 8 is a view similar to Fig. '7 showing the container further opened by hinging of its reclosure member; s g

Fig. 9 is an enlarged fragmentary view similar to Fig. 2- andshowing. a modified form of fiat blank wherein the hinge tab is cut from a different wall part of the container body; and

Fig. 10 is a fragmentary perspective view of opposite upper ends of the body blank shown in Fig. 9 after being folded and after the blank has been formed into tubular shape.

As a preferred embodiment of the invention.

the drawings illustrate a cylindrical sheet metal container I! (Fig. 1) having a tubular body [2 the opposite edges of which arejoined together in a. longitudinal fully locked side seam l3. The body also has a circumferential multiple folded wall l4 adjacent its upper end. Top and bottom end closures l5 and it are secured to the'body in double and seam joints l'l.

The body I2 is produced from a flat body blank M (Fig. 2). Such a body blank may be unooated.

on one or both sides or printed or lithographed as desiredas in the case of decorated containers.

The body blank I 8 is: formed, with a tearing tongue I9 at one edge'of the blank and with-a projecting binge; tab; .22 which isspafied beIOWi-heg -notch leading directly into the score line.

of bend or fold 35, 31 set off opposite marginal most wall 26.

' tongue at the same edge. A projecting hinge tab longitudinalside seam. Sucha container body 2 gral outer wall fold or extension 26. The hinge tabs 22 and 23 extend up from the body wall section 24 and are notched or slit in a suitable manner as at 21, 28 to separate each tab from the intermediate body wall extension '25. This" provides for a distinct line of bend or fold 29' between the major body wall section. and the intermediate wall extension 25. A line of bend or fold 32, which is parallel to the line of bend 29 and also to the upper end of the sheet, designates the boundary between'the sections 25 and 26.

The outer wall extension 26 has parallel score lines 33'which setoff a tearing strip 34. Such a tearing strip terminates in the tearing tongue I9 at one end of the blank. A V-shaped notch 35 is cut in the edge of the wall extension 26 on each side'of the tearing tongue, the apex of each Lines edges 38, 39 of the body blank section 24.

Fig. 3, of the drawing illustrates the upper portions of the two edges of the body blank 13 after the intermediate and outer wall extensions 25 and 26 have been folded along the lines of bend 29, 32 and have been shaped into the double wall extension M. The folded body is then formed into tubular shape. This View also shows how the intermediate and outer wall extensions are cut away at the longitudinal seam region leaving the top of the hinge tabs 22 and 23 in the same horizontal plane as the top of the outer- The marginal edge 38 is folded inwardly to form the outer hook section for the lock seam of the container body. The marginal edge 39 likewise is folded but in an outwardly direction to form .the inner hook of the seam; The tongue l9 may be folded back upon the outermost wall extension 26 where it is disposed parallel with the outer wall. To avoid crystallization of the stock, the bent section of the tongue may be formed as an open loop.

Fig. 3 of the drawings discloses that a rolling or similar operation has been performed on the major body wall surface 24 so that this body wall above a line of depression 42 has been necked-in to provide a depressed pocket 43 for a purpose hereinafter described. The side seam region, however, is not depressed but remains unaltered.

The inner and outer hook sections of the folded marginal edges 38, 39 upon being interlocked when the can body is fully formed, constitute the longitudinal lock seam. As will be subsequently explained, such a seam extends substantially the full body height of the container.

26 in the fully bumped container body overlap upon the hinged tabs 22 and 23 adjacent the;

is now ready for soldering of the side seam and for sealing of the body extension edges The fiuxing and soldering of the longitudinal side seam mayfbe done in the usual manner. The solder is usually applied to the exterior of the body by a solder roll and the construction of the fully bumped container which includes a continuous flush surface along the side seam, permits such application. I

The open space between adjacent edges of the.

cut-away Wall extensions 25, 26 together with the space afforded by the turned-back tongue 19 insures unrestricted access to the seam crack by the v At such completion of the can body, the hook sections of the soldering roller. Such a solder line therefore extends as an unbroken bandfor the full length of the lockseam on the container body wall. At the same time the solder enters between the edges at the cut-away body walls of the extension and also bondssuch-walls together andsecures the walls to the container body wall in a hermetic seam.

The fully soldered container body is now ready to receive its bottom end i6 (Fig. 1). Such a. body may be flanged in the conventional manner, whereupon the bottom is .double'seamed or oth rwise secured in position to form the end seam N. This prepares the can for receiving its conoutermost wall extension 26 and to the extended hinged tabs 22 and 23 in the end seam IT. This completely seals the. container with its contents.

Such sealed containers usually have a slotted key 44 secured to the cover l5, as by welding, for convenience in opening."

When the container is tobe opened, the tearing strip 34 may be removed by engagement of the slotted key 44 with the turned back tearing tongue I9. By reason of the tongue being turned back in the winding-off direction only a partial turn of the key, after it has been fully applied, sufiices to fully seize the tearing strip so that it is easily broken along the score line.

7 Removal of the tearing strip 34'from the outermost wall extension opens the container and leaves only the hinged tabs 22, 23 as a connection with the open container (Figs. land 8). Since the hinged tabs constitute extensions of the body proper and comprise the outer layers of the completed can they permit unrestricted outward bending at the side seam; This permits raising the cover at the opposite side to remove the container contents. The flexibility of the hinged tabs 22 and 23 permit repeated opening and closing of the cover as a reclosure member.

The reclosure upon being swung into closed position on its hinged connection allows the severed marginal portion of the outermost wall extension 26 which still remains secured to the cover, to frictionally engage with and over the intermediate wall extension 25. At the same time a depending annular wall 45 of the cover I5 frictionally engages inside of the smooth bodywall 24 with an interior friction fit.

Figures 9 and 10 of the drawings showa modified form of the invention wherein the hinging element comprises a single hinge tab 46 which is cut at one edge of a body blank 47. This body blank is similar in certain respects to'the blank l6 (Fig. 2) and also includesa tearing tongue 48 which is spaced above the projecting hinge tab.v

Such a hinge *tab, however, may be formed at the oppositefedge, of the sheet if desired and will,

function in the same manner as the form shown.

The body blank 4'! like body blank 18, has a major body wall section 49, an intermediate body wall extension 52. and .an outer body wall extension or section 53. The hinge tab 46 is notched or slit at 54, 55 in the material at the end of the blank 49 to separate it from the intermediate body wall extension 52 so that it may be folded as an integral part of the latter extension along a line of bend or fold 56. The opposite edge of the sheet is notched or slit as at 51 so that a distinct line of bend or fold 58 may be provided between the major body wall section 49 and the intermediate wall extension 52. Similarly a line of bend 59 which is parallel to the line of bend or fold 58 designates the boundary between thewall extensions 52 and 53.

Substantially all other details present in the body blank 41 (Fig. 9) have hereinbefore been illustrated and described in connection with the body blank l8 of Fig. 2. Fig. 10 of the drawings shows the body blank 41 folded and formed in tubular shape as by the same procedure as was the body blank 18 of Fig. 3. The former view is arranged to extend out and lap-over the outermost wall extension 53 at the opposite edge of the body and to be secured thereto when the lock side seam is soldered. The hooked edges of the fully prepared body 41 are finally interlocked in the conventional manner and all the subsequent operations which follow to complete a sealed container are similar to those which have been hereinbefore described.

Opening of a sealed container embodying a single hinge tab is the same as when two hinge tabs are used and provides a similar hinge connection and reclosure feature.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and-it will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

I claim:

1. A sealed metallic container, comprising a tubular body having a longitudinal s de seam and having an integral folded double wall body extension at its upper end and on the outside, the outermost wall of the body extension containing a tearing strip set'cff by score lines and terminating in a tongue, a bottom end closure secured to the lower end of said body, a top end closure secured to the outermost wall of said extension, sa d tubular body wall being bent inwardly to provide a flush exterior surface for said outermost extension wall and the tubular body wall below said extension wall, saidlongitudinal side seam extending between the top and bottom end closures as a smooth continuous section through said bent wall part to .close and strengthen the body, said body wall having a plurality of integral overlapping and outwardly projecting hinge tabs constituting longitudinally disposed prolongations of said side seam embodied in said top end and body connection, said tearing strip being removable to open the container to adapt said tabs for hinging action of said top and closure thereon with its attached outermost-body wall extension as a reclosure member having frictional engagement with the inner wall of said body extension.

2. A hinge cover tearing strip metallic container of the reclosure type, comprising a tubular body having an integral circumferential multiple fold in its wall adjacent one end, the outermost of said folded walls containing a tearing strip set off by score lines, and an end closure secured to the said outermost wall, said body having a longitudinal lock side seam extending to the joint be-' v tween said body and closure to close and strengthen the body, the inner wall of said folded walls having an integral projecting hinge tab disposed in the plane of said inner wall and extending longitudinally outwardly from and disposed in 3. A sealed metallic container comprising a tubular body having at its upper end an integral folded double wall body extension on the outside, the outermost wall of the body extension containing a tearing strip set off by score lines and termi- 'nating in a tongue, a bottom end closure secured.

to the lower end of said body, and a top end closure secured to the outermost wall of said extension, said body having a longitudinal soldered side seam extending between the top and bottom, end closures to close and strengthen the body, said body wall having a plurality of integrally formed overlapping and outwardly projecting hinge tabs disposed adjacent said side seam, said hinge tabs being embodied in the innermost wall of said top end'and body connection and extending longitudinally outwardly from said side seam, the double Wall body extensions being cut away and soldered adjacent and in substantial alignment with said side seam, said tearing strip being removable to open the container, whereby the top end closure with its attached outermost body wall folded wall extension containing a tearing strip set oiT by score lines, and an end closure secured to the said extension wall, said body having a.

longitudinal lock side seam extending to the joint between said body and closure to close and strengthen the body, said body wall having a plurality of integral overlapping and outwardly projecting hinge tabs disposed on opposite sides of said side seam and embodied in said end and body connection, said hinge tabs extending longitudinally outwardly from and disposed in alignment with the lock portion of said side seam, said tearing strip being removable to open the container, 1

whereby to adapt said tabs forhinging action of said: end closure as a reclosure member, said inner wall of the body extension of said opened containerproviding a seat for said reclosure member.

EDWARD O. THEN.

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