US2261621A - Container closure - Google Patents

Description

NOV. 4, 1941. H I 2,261,621

CONTAINER CLOSURE Filed July 14, 1938 2 Sheets-Sheet 1 1 .76% Z l 19 I! I ll j 1 l J "'1 WITNESSES: I N VEN TOR:

Qfi-MMZJ; John hiMifizrrison,

W M 7 ATTORNEYS.

Nov. 4, 1941. J K, M, HARRISON 2,261,621

CONTAINER CLOSURE Filed July 14, 1938 2 Sheets-Sheet 2 INVENTOR:

ATTORNEYS.

John K- M Harrison/ 1 Extended m"ss comma oaosrnas I John K. M. Harrison, Qgontz, Pa., assignor to Sooony-Vacuum Oil Company, Incorporated, New York, N. Y., a corporation of New York Application July 14, 1938, Serial No. 219,183

1 Claim.

In forms of the invention as hereinafter dis closed, another object is to substantially reenforce the end closure by an inner lamina of parchment or other suitable fiuid-proofed sheet material which is permanently adhered thereto.

A further object is to furnish a novel type of end piece or closure for suitably-lined containers which, incident to its insertion, in part peripherally opens .up or flares so that the' container lining is caused to annularly enter between and securely unite with the inner plies or fibers of said closure, whereby an effective andrigid buttress joint is positively ensured.

A still further object is the provision of an end closure, of the character above indicated, having a removable or partly removable section whereby easy access is afforded to the contents for discharge, or in some forms which enables differ- I ential out-pourings.

, Additional objects and ancillary advantages of this invention will be manifest from the following disclosure of typical embodiments considered in conjunction with the accompanying drawings; while it is to be understood that the concluding range of equivalents consistent with the state of the prior art.

In the drawings:

Fig. I is a broken central section through a container embodying one form of the novel end closure of this invention.

Fig. II is a plan view of the end closure of Fig.

I apart from the container body shell.

Fig. III is a broken diametric section on the line IIIIII of Fig. II, but drawn to exaggerated scale for purposes of cleamess.

Fig. IV is a fragmentary sectional illustration showing a joint-forming stage incident to insertion of the end closure into abody shell.

Fig. V is an exaggerated section somewhat similar to the preceding view, but showing the relative position of the constitutent parts incidental to completion of the end inserting operation and with the body shell end spun over into abutment with the end closure outer peripheral surfaca- Fig. VI is a plan view of an end closure, in aca claims of this specification are to be accorded a closure provided with an 'eccentrically located section for pouring purposes.

Fig. IX is a broken diametric section on the plane IXIX of Fig. VIII, but drawn to increased dimensions.

Fig. X is a view similar to Fig. VIII, but showing the semi-removable section adapted to permit differential out-pourings; and,

Fig. XI is a section like Fig. IX, with the semiremovable section-in elevated dot-and-dash line position.

In all the views, corresponding parts are characterized by similar reference symbols, with an.

appropriate exponent to distinguish the different embodiments.

Referring more in detail firstly to Figs. I-V, in-

clusive, the numeral l comprehensively designates a paper, fiber or other material, containen the body shell 2 whereof is conveniently of the spirally-wound type'coated on its inner surface "with a suitable liquid-resistant medium 3, such as a resinous thermoplastic for example. Into the respective ends of the body shell 2 there is fitted, and firmly secured,- one of the novel end closures 4 of this invention. I

Each such end closure 4 comprises a main or body portion of card or fiber board, or it may consist of suitably afiixed sheets of paper, ,fiber or other suitable material 5, and a facing lamina 6 of appropriate parchment or parchmentized paper, said lamina being secured to the con-' fronting sheet face of the body portion bythe adhesive film I, of oil and moisture-proof glue,

which forms an impervious juncture. It is to be particularly noted that the glue film l, in practice, may be initially formed by a "dab of glue or the like which, when compressed to aflix the parchment lamina 6, spreads out to cover an area well within the circumferential confines of the closure 4, so that the surrounding edge portion 8 of said lamina 6 is left unattached and free, for a purpose later on explained. Still further, it is to be expressly understood that, in practice, when adherently compressed paper sheets are used for the main or body portion approximately three or four plies are found suilicient, also that in the drawings the reverse sectioning shown is intended to indicate both paper-plies and, alternatively, the fibrous constituents of cardboard or the like.

In producing the end closures 4 from sheet material as aforesaid, it will be apparent that cordance with this invention, provided with a central removable section for outlet purposes.

Fig. VII is a broken 'diametrlc section on the plane VII-VII of Fig. VI, on an increased scale.

Fig. VIII is a plan view, showing an end the parchment lamina, as readily understood on an inspection of Figs. III-V, more particularly. It is also to be observed thatincidental to severnice or pimching of the end closure from the pee-formed parchment-faced body material 8, the parchment lamina will'have its annular surrounding free portion 2 slightly dished to-,

I wards said body material I for a purpose later on set forth: while it is to be expressly understood the degree of flare around the closure edge has'been exaggerated in the drawings, for

:clearer illustration of one of the inventive fea- In applying each end closure 4, and assuming the diameter thereof closely approximates that aid of a heated die or the like, it will be obvious the medium 2 is softened somewhat and will penetrate between the parchment surrounding free portion 1 as well as between the corresponding free edges of the paper plies or fibers i, as indicated by the stippled parts H to move said free edges inwards, best shown in V.

As a result there is produced what may be conveniently termed an annular buttress juncture intermediate the closure-surrounding edge and the displaced medium 3, whereby an eifective sealed joint is set-up between the end closure 4andtheinnerwallofthebodyshell2. Furthermore, such a juncture is strengthened incidental to contractive cooling of the medium or and the third or longer side line through the-center of the closure 4b, and the apex rounding I! a sufiicient distance within the circumferential confines of said closure. This latter feature ensures against weakening of the disc circumference in the region of the apex rounding II, as well as enabling spinning .over of th container shell free end without interference with the pouring the arcual dot-and-dash line 22 in Fig. suitably severing the plug ll at the points It, and using the points 20- as hinges, it will be apparent the plug I 2 may be angularly raised, the underlying parchment suitably severed within the confines of the aperture l6, and the contents of the container poured out; or a combined cut- VIII. By

Referring now to Figs. X. and XI, which illustrate the adaptation of the present invention as a closure 4c for milk containers, said closure is formed with an incised triangular opening 23 preferably of right-angled contour. This fiap'flpreferably has one side, including the right-,angle, scored at 25 for hinging movement, a second side 28 proximate, or disposed chordiashion relative to, the closure circumference,

21 in parallel relation to a diametric line passing through the centhermoplastic 3, such cooling serving to further draw the juncture ill and parts il inwards, as shown in Fig. V, in an obvious manner. In practice, after each end closure 4 has been inserted, the body shell free end I2 is suitably spun over and inwardly so as; to strengthen the container, as a whole, by annular abutment with the end closure outer face at I12.

Referring to Figs. VI and W1, theendclosure 4a differs only from the form previously described by the provision therein of a plug portion' l4, removable .from a central orifice IS. The removable or plug portion I4 is conveniently formed by an appropriate operation, such as a second punching effected from the outer face of the body portion So by a suitable tool or die that does-not pierce the parchment lamina in. when the portion 14 is removed, it will be apparent that an appropriate implement, for example a combined cutter-and-pouring spout, not shown, adapted to remove or partially remove the parchment lamina within'the confines of the orifice Ii, can be applied.

In the further embodiment of the end closure 4b illustrated in Figs. VIl and Ix, the same is provided with a triangular aperture l6 having the angular corners rounded at H, said aperture not penetrating the parchment ib as described in connection with Figs. VI and VII. This aperture I. is normally closed by a snugly fitting plug II which is preferably not severed at the spaced points is and 24 from the end closure laminated or fibrous portion 5b. It'is to be observed the aperture Ii and plug" II are.

shown as of isosceles contour with'the base 2| approximately in registration with a diametric ter of the closure -4c; and said fiap 24 is provided with a conventional pull-up tab 28. When the flap 24 is drawn outwardly by aid of the tab 28,'as indicated-in Fig. XI, it tears away from the underlying parchment 6c, leaving said parchment intact Now it will be readily understood that by severing the parchment along the side 26, the cream collected at the top of the container, by a gentle inclination of the latter, can be poured-out weir-fashion over the opening edge aligning with the flap side 26, in an obvious manner; whereas if the parchment 6c is out along the side 21 and the container tilted for discharge over the opening longer edge that registers with said flap side, themilk and'cream can be poured -out in parallel relation to the diameter of the closure 4c.

From the foregoing description, it is deemed the merits and advantages of this inventlon will be fully appreciated; also, that the specific details of construction illustrated and set forth are susceptible of modification in various ways, without departing from the spirit of said invention. It is, therefore, desired to include .herein all reasonable variations that may fall within the scope and liberal interpretation accorded the following claim. I

Having thus described my invention, I claim:

A container comprising a paper or the like plastic lined body component; an end closure therefor including a fibrous main portion consisting of multiple paper sheets suitably adhered together with the surrounding edges an- .nularly unattached, and an impervious sheet material lamina secured by moisture-proof adhesive to the inner face orthe body portion with the an- ,nular edge portion unattached; said' end closure being frusto-conical in shape-with the smaller endpositioned inwardly, and the side thereof forming with the wall of the container and plastic lining, in cross section, a plastic wedge, with the plastic extending inwardly between the unaperture l6, as indicated by ter-and-pouring spout afiixed as above referred

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