US2325084A - Container - Google Patents

Description

y 1943- E. 0. THEN 2,325,084

CONTAINER Filed June 6, 1941 v ATTORNEYS Patented July 27, 1943 CONTAINER.

Edward 0. Then, Newark, N. J.,.assignor to Amer: i ican Can Company, New York, N. Y., a'corporation of New'Jersey Application June 6,1941, serial No. 396,929

sol-aims, (o1. 2.2 54) invention relates toa sheet metal can or container having a tearing strip set off by score "lines cutinvthe outerwall-ic-ld of abodyfex- V tension and has particular reference to a tearing tongue which is extended as an integral part of the inner wall fold of thebodyextension and which is secured to the tearing strip adjacent the "longitudinal-side seam so that the tearing strip may be removed in opening the can.

The instant invention contemplates an 1 proved tearing tongue-construction applicable to a tearing strip container having an'integral folded body wall extension on.the outside of the body wall proper, wherein the body wall is formed with a longitudinally soldered lock side seam designed to extend between end closure members of the sealed container, such as described in my copendm application filed of evendate and identified by Serial Number 39 An obiec'tofthe invention a tearing strip container having folded walls adis the provision of Fig. 2 is an enlarged fragmentaryiview of upper Y end portions of a flat blank-from whichthe con xtaineribody is @IOdLlCGClLT'.

' Fig. 3 is an'enlarge'd sectional detail of the body wall proper and the folded bodyiextension at the v longitudinal side seam as viewedalongthei line 33 in Fig. 5 and illustrating aton'gue extend-.x ing from-an intermediate wall-fold; 1 s

' Riga-dis a fragmentary perspective View 'of ;opposite' upper ends of the'rbody blank' shownl in Fig. 2 after being. folded and after the blank has be'enformed into tubular .shapeand illustrating the tongue projected from a middle wall iold, just prior to having the hooked edges interlocked;-

Fig. 5 is a fragmentary view in side'el'evatio'n of thepartof the container body shownin-Fig. 4 after the upper "-ends'of the body have. been 7 joined in a longitudinally locked side seam and jacent-anupper end which constitute a body ex-- tension, the walls of such extension being-cut away at the longitudinal side seamof the can which has 'a tearing tongue extended from the $111119! wall of the extension and which is soldered ,to an endof the tearing stripin the outer wall fold. f

t Another object of'the invention is the provision of a container of the character describedhaving a fully; locked longitudinalside seam. which extends from one end of the can to the other to prol vide increased strength for the body and wherein the circumferential double fold on theoutside of the body is cut away at the side seam regionso that a tearing tongue extended as an'integral part of an intermediate fold may project out'over the 'side seam, the base of the tongue being provided with a breakaway area set off by a score line in the intermediate fold and which-outlined area is solderedto the endof'the tearing stripin the outermost fold, 'where'upcnpulling the tongue separates the breakaway area from the intermeillustrating the extended tearing tongueprojecting over the seam and over the outermost wall fold at the body extension;v and 7 e Fig. 6 is a sectional detail taken through the top double seam and the adjacent. folded body wall of the sealed container.

As a preferred embodiment of the invention the drawing illustrates a-sealed' cylindrical sheet metal container H (Fig.1 1) which; includes'a diate fold which thereafter remains attachedt'o the. tearing strip and which upon remoyfal'opens Numerous other 'objec ts and advantagesoi the invention will be apparent as. itfis better undep stood ircm the following description, which,

taken in conne'ctic-n {with the accompanying drawing, discloses} a preferred embodiment thereof. r v

Referring to the drawing; n r Figure l i a perspectiveview of a sealed container' embodying the instant invention;

wall section 24, an intermediate body wall ex tension 25 and an touter'-"wall,extension 1276., I The= lap "projections 21323 extend upwardly fromv therbody wall section 24; The 'projection 21 is notched or slit as at llgzfi while' tubular body lithe edgesof which jarejoine'd together in a longitudinal fully locked side seam l3. The bodyg 'also has amultiple circumferentially folded well M adjacent its upper end Top and bottom end-closures l5 and it are. secured to the body in double end seam joints asat I1.

The body membe-r' i2 is produced from a sub- ,7 stantially flat rectangular body blank l8 (Fig.2). Such a body blankmay be uncoated on one or both sides or printed orzlithographed as for example in decorated containers. The body blank I8 is formed Withatearing. tongue .l 9 at one edge of the blank and with a short lap projection 2|" which isspaced just belo-wthe'tongue. Anouter lap extension 22 is-formed-above the tongue at the same edge. A lap projection2-3 formed on the opposite ed e of the body blank. 5 T; a

'The bodyfblank 181 comprises azmajorb'ody the-projeCtion-ZB is notched; at 29 and slitas at and the" intermediate walllextension 25. A similarline of bendor fold 34, which i'sjparalleltoj This providesifora distinctlineof bend. or" fold 33 between the 'major'body wallsection 2 4,

I flf igui :suntaoe of the A score line 35 is out across each lap projection 2|, 23 for a purpose hereinafter described. The outer wall extension 25 has parallel score lines 36 which set off a tearing strip 31.. Two V- shaped notches J38 arecnt in the edge of the wall tearing strip 3? and sealing down the body extension edges.

The fluxing and solderingof the longitudinal y sideseam maybe donein .the .usualm anner. The

extension sjo- 'that itlie apex; offeachnotchis directed into-a score line Thetearing tongue wall 'ex'tension'25 and preferably is locatedfto when the body blank is folded.

V A notch'fiisirnilar to notch '38 is out in the 42. This score lineis arranged to outline a break awayarea at the base of the' tongue andli's idem tified by the numeral 43.

Lines of bend 4'4, 45

set ofioppositetnarginaledges, 41 of the major body walllseotion fltor thefside seam.

Fig-r l of the drawing sillustrates'the upper register in alignment with. the tearing strip .31 i

soldier usually is applied to the ekterior of the 10 ISeXtendsfrom the edge of the intermediate I body by a solder roller and the construction of the fully bumped container which includes a substantially continuous flush surface along the side :s'ea-m, permi ts such application. The open space between adjacent edges of the cut-away wall extensions. 25 and 26" affords unrestricted access to the seam crackbythe solder roller.

The solder region of the completely soldered icontalinerlbody zextends as an unbroken bond for V cluding the surface beneath the tongue where it.

ponti'o'ns of the two edges of the body blank l8 afte-r the intermediate and the outer walhextensions iZiand-Zfi have been'fol'ded downwardly won} body wall section .24 'alon the lines-of bend 33 and 34 and have been shaped into the doublewall extension 15. The foldednbody at i time is its iionrned tubular shape. This viewalso shows how the intermed ate and outer wall eartenfirms are cut away at the longitudinal seam region leaning the top or the lap projection 23 in tl'lefsame plane asthe topof the-outermost wallifi. r

' .The marginal edge '46 'is'iolded inwardly to form the outer hook section tor-the lock seam of the container body. The marginal edge I"! also is 'fiolded'but in an outward direction to form the inner hook or therse'a m. Th area 43 at the bas'e,

of the tongue 1'9 fis'fshown'herein as being disposed directly beneath the-tearing strip 37 in the out?rlmostlwval'l extension. The :tongue :19 is projected outwardly beyen'dthe hook sectim fis 'i 1 Figure 4 {of the drawing also indicates that a rolling or similar operation has been previously moi-formed fin-the maiorbody wallsurface :24 so thattthe -11cly wall above a line of depression 48 been necked in to provi'de 'a'depressed pocket The side 9 tor a purpose -hereinafter described. seam region at each edge of the body blank :is "not depre'ssed bu t rernainsunaltered. j

The'irrner and outer hooksections of theffllded marginal edges "16, "6!, upon being interlocked whenthecan body is fully iormedponstitute the longitudinal look seam. 1-3.

As Will".'b6' subsequently explained, this seam extends substantially the full body height-of the container. At is h '"ooxn-pletion of the can body, the hook sections or the isides'eam fare bumped down in a -con ventitmal -manner :to produce the completely fionmed loc'k sears... It is desirable, at such a so tlt they tully seait in the pochet tfl. as in. 5 WhemThusTformed, the exterior the outer smfiace ro'ffithe body wall sprnper.

Help projections 2 23 a jacen t, the longitudinal side seam; This v iew :ai. o shows howthe outer lap 22 ever-laps open the lap projectionsij and the f -ulll'ength of the lock seam, including the area atthe base of the tearing tongue and inengages the container body wall proper; The

body Wall in a; hermetic seal.

' Theiully soldered container bodyis nowready to receive its-bottom end 16 (Fig. '1). Such a 'bodymay be flanged in the usual manner, where- .upon' thebottom is double seamedl or otherwise secured in position to form :the tend seam I]. This prepares the container ttor receiving its contents; .When zsuchga'acontainer .is filled with its vcontents; the top :end 15 is double seamed. .01

otherwisesseomedrto the upper :end of the outeroperationgto alsotsdueeze together the double wall extension M, which comprises the fintermediatejand outerfoldod walls .25 and 25,

{22'rand'rto theilap projectionigfl in the :end seam 11. This completely seals the container with its contents. Such se'aledadontafiners usually have'a slotted key '52 secured tothe cover t5, 7

as by welding, for convenience in opening the container;

When the sealedycontainer'is to be opened, the tearingstrip :3J may be removed bytengaging -the nd of the extended tearing tongue lfi 'into the opening of lthe'slotted key 52. 'Suchapplication and partial .turning'of the key breaks the solder'bond benea'th the tearing tongue 19 at the longitudinal joint. Continued turning inc-ve- *mentof thekey severs the tearing tongue from "the intermediate wall 25 along the score line 152 whereupon the "tearing tongue remains with-the tearing *strip' 3! of the outer fold. "-Ihe' tearing -S't1 i-p is then easily brokenin the regular manner 'fi 'g the -score line to complete the opening of the-container.

1 'The-removalof the tearing stripfrom'theout ermost wall extension leaves only the lap projections "Z l, 2 3 as a connection'withtheopened containe'r; Raising-the c over H5 at the opposite side and bending theglappro-jections 2 and 2.3 at the score flines 35, fractures the projections at. this region and completely separates the covenf rom the. opened container. The Separate cover there 7 after serves as-a' reclosure. member.

'Inapplyingsueh a iteclosure to the opened container, severed In'arginalportion of the outermost. wall .eXtensiOnIZB, which remains secured to the cover [-5 frictionally engages with the intermediate wall extension 25 as an-exteriorlslip closure element. At thesarnetime a depending .annular wall :53 -of the cover 15 frict-ionally.;en-

ages the inside -;of.:the smooth body-wall .2 of

Such a container body is nowthe opened container with an interior friction fit.

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.

formed in the intermediate of said triple thickness walls and projected from an edge thereof,

an endclosure member secured to the said outermost wall, saidbody having a continuous uninterrupted soldered longitudinal lock seam di'sposed radially inwardly of said tearingstrip and tongue and extending to the joint between said body and closure to strengthen the body, the

base of said tongue being soldered to said oute'r most wall to secure the tongue to said tearing strip, whereby pulling outwardly on said ton ue in said intermediate wall breaks through the score lines in said outermost wall and removes the tearing strip to open the container and to provide a container reclosure member.

2; A key opening metallic container, comprising a tubular body having an integral folded circumferential wall area of tripl thickness adjacent one end, the outermost of said folded walls including a circumferentially disposed tearing strip set off byscore lines, a tongue formed in the intermediate of saidtriple thickness walls and having its base set off by score lines in said intermediate wall, said tongue being projected from an edge of said intermediate wall, an end closure member secured to the said outermost wall, said body having a continuous uninterto said tearing strip and to provide for removal of the tongue from the intermediate wall, whereby pulling outwardly on said tongue in said intermediate wall breaks through the score lines in said outermost wall and removes the tearing strip to open the container and to provide a reclosure member having frictional engagement with the said circumferential wall area ofthe openedcontainer body.

3. A sealed key opening metallic container,

comprising a tubular body having an integral folded circumferential wall area of triple thickness at its upper end, the outermost wall of said area including a circumferentiallydisposed tear ing strip set off by score lines, a tongue formed in the intermediate wall of said area, a bottom end closure member secured to the lower end of said body, a top end lclosure'member secured to the said .outermost wall of said area and to an adjacent portionpf'said body wall, said tubular bodywall being bent out of its circumferential c r ,plane adjacent the lower edge of said folded'wall area to provide a flush exteriorsurface for said outermost area wall and the tubular body wall below said area',s'aid bodyhaving anuninterrupted longitudinal lock seam extending continuously between said top and-bottom end closure members and between adjacent spaced end portions of'said folded wall area to strengthen the body, the base. of said tonguebeing soldered to-said outermost wall adjacent said tearing strip 7 to secure the tongue to th tearing strip, portions of said folded bodyfwall area being cutawayand soldered down at said longitudinal lock seam,

whereby pulling outwardly on said tongue in said intermediate wall breaks and removes the tearing strip in said outermost wall, to open the container,- such removal of the'top endcclosure with I 7 its attached outermostfolded body wall area prorupted soldered longitudinal lock seam disposed 1 radially inwardly of said tearing strip and tongue viding a reclosure memberhaving frictional en-. 1 f gagement with said tubular body wall and said 1 folded body wall area. v

' EDWARD'O. THEN.

, 1 and extendingto th joint between said body and closure to strengthen the body, the base of said tongue being soldered' to said outermost wallwithin said base score line to secure the tongue

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