|Publication number||US1685370 A|
|Publication date||Sep 25, 1928|
|Filing date||Nov 5, 1923|
|Priority date||Nov 5, 1923|
|Publication number||US 1685370 A, US 1685370A, US-A-1685370, US1685370 A, US1685370A|
|Original Assignee||Moore Arlington|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (2), Classifications (17)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Sept. 25, 1928. 1,685,370 A. MOORE PAPER CONTAINER HAVING BODY WITH RENITENT NECK AND PROCESS OF MAKING SAME Filed Nov. 5, 1925 m ggsmm 7 H3 1" Patented Sept. '25, 1928.
UNITED STATES v 1,685,370 PATENT OFFICE.
ARLINGTON MOORE, OF WORCESTER, MASSACHUSETTS.
PAPER CONTAINER HAVING BODY WITH RENITENT NECK AND PROCESS OF MAKING SAME Application filed November 5, 1923. Serial No. 672,758.
, My invention consists in a paper container having a body with renitent neck and process of making same. I
A. paper container comprising a body having arenitent neck to receive the closure or head is of great utility in the art of paper containers, in that it is adapted to receive a head which may be considerably over size, and when such a head is inserted, or, as I prefer to term it, planted,'therein and the neck is thereby expanded, the head is securely held and clamped in place and atight, hermatic seal is secured, becauseof the quality of renitence or resilience possessed by such neck, or in other words, its capacity after being expanded to contract or tend to contract to sub stantially original dimension.
I have discovered that when the margin of a paper container body is reenforced as by heing turned inwardly in two or more folds, and such reenforced part is consolidated together with the body and calendered under very high pressure, so as to form a reenforced and con solidated rim partof substantially permanent gage dimension, and the adjacent part of the body or neck is formed or drawn without being subjected to such high consolidating pressure and calendering, as may be done by relieving or cutting away the forming die or tool in such neighborhood. such uncalendered portion is bowed inwardly in cross-section and provides a renitent or elastic neck portion adapted to yield' outwardly when a head or end of outer diameter somewhat in excess of the inner diameter of the neck part is inserted or planted therein, and ada ted for clamping and hermetically sealing t e head when in place by the contractile forceexerted due to tendency of the elastic neck portion to resume 40 the original unexpanded state.
A supporting shoulder is preferably provided at the base of the renitent neck portion to limit the inward movement of the head, upon insertion or planting, in correct posi- I tion with respect to the expandible and contractile neck. Such shoulder portion is uncalenderedand is- -a-dapted to be expanded against its contractile tendency when a head is inserted. If desired, the filled container may be supported externally when a head is being inserted by annular supporting means applied under said shoulder.
An illustrative form of paper container is shown in the accompanying drawings, to-
a get-her with a. diagrammatical illustration: of
amode of carrying out the process, but it is to be' understood that same are only for illustration of the principle of the invention and are not to impose limitations thereon.
In said drawings, Fig. 1 is a partial side view of the upper or mouth end of a paper container embodying my invention. Fig. 2 is a fragmentarysectionalviewof a female die with a two-ply body blank in place therein, having the margin folded inwardly preliminary to application of consolidating pressure by the male die. Fig. 3 shows application to such marginal portion of consolidating ressure by the male die, which also serves to draw the shoulder in the body wall. Fig. 4 shows t-he position taken by the body parts after the pressure is released and the male die withdrawn. Fig. 5 shows a flanged head about-to be inserted or planted in the body neck. Fig. 6 is an enlarged sectional view showing the head of Fig. 5 in place and showing in dotted lines the position from which the neck has been expanded by the insertion of the head, and to which it will contract upon removal of the head. Fig. 7 shows a disk head in place in the container body, and Fig. 8 a flanged head in place therein with a disk inserted in the flanged head.
Reference character 10 indicates generally a paper container body. Same is shown as a tapered or frusto-conical body for convenience in nesting, but cylindrical and various other forms and shapes may be used. The body is illustrated as of two-ply material, but material having any desired number of plies 90 may be used, and the term paper is used as a generic term to indicate any suitablematerial of paper-like character.
The edge of the body wall 10 is preferably reenforced by being turned in on itself in one or more folds, one inturned fold 12 bein in-v dicated in Fig. 2. The lip or margin 0 the body wall and the inturned part 12 is rigidly set and consolidated with the adjacent part ofthe body wall by application of extremely 100 high pressure, which may be in the neighborhood of four or five tons per square inch, and is-referred to herein for convenience as consolidating pressure. The application of pressure is preferably performed in a spinning 105 operation, and in Fig. 2 the female or receiving die is indicated at 14. The body blank 15 preferably extends initially somewhat beyond the female die 14, so as to provide suflicient material for the formed up portions. 110
stantially consolidated or welded together to form a structure of substantially permanent gage dimension very hard, smooth, highly glazed and of great strength, and the parts thereof, if separable at all, can be pulled apart only with considerable difiioulty. I prefer to designate such rim a fabricated rim.
In the region where the consolidating and calendering effect is not desired, however, a
relief is formed in one die or tool with respect to the other, as indicated in male die 16 at the region 20. Male "die 16 is preferably provided with a fiang'ei-lfljvhich serves to depress the foldedov'er margin of the body blank within the female die and assures that there is sulficient stock within the mouth of the female die to make the formed up portion. I have found that when a part of the body, as 22, is thus left uncalendered adjacent to the highly calendered, consolidated and smoothly glazed lipor rim portion 24, the body will be found after removal of the male die, as indicated in Fig. 4, to contract and to be bowed inwardly in cross-section in such neighborhood, as indicated at 26, Fig. 4, and, not being subjected to the extremely high calendering and consolidating pressure, the paper in this neigh borhood 26 is of about the same thickness as it was originally. Furthermore, its inner surface may be of a relatively rough or frictional nature so as to exert a gripping action or frictional holding action upon the contacting part .of an inserted lid. In connection with the inward contraction and bowing inward of the uncalendered portion 22 after the tools are removed, the lower part of the highly calendered and consolidated rim or margin, that is to say, the portion thereof marked 24' (Fig. 4) is found to be tipped or tapered inwardly to some extent, though its contraction is comparatively slight because of the high degree of calendering and consolidation to which it has been subjected. 1
The tools are preferably of such form as 'to draw a shoulder 28 at or about the lower or inward terminus or base of the uncalendered and non-consolidated neck portion 22, and preferably the die or tool relief is extended to include the shoulder forming portions 30 and 32 of the dies or tools, so that, after the shoulder is drawn, shoulder portion 28 has substantially the same characteristics as the part 22, that is to say, that after being formed into a shoulder, the material making up the shouldered portion is elastic and is in substantially the normal condition of paper and not consolidated or calendered and made rigid by being subjected to the enormous pressure to which the lip portion 24 has been subjected. This will be plain from the showing in Fig. 3 where substantially the same amount of space or clearance is providedbetween the dies atthe shoulder drawing portions 30, 32 as there is between them at the double or folded marginal portion 24. i
The uncalendered inwardly bowed portion 26, produced as in the manner described, may be described as renitent or elastic, that is to say, when a head 34 is inserted therein, as by a pusher 35, for example, which head 34 has an outer diameter somewhat in excess of the inner diameter of part 26, the latter is expanded and exerts a Very substantial contractile force on the inserted or planted head. This contractile eflect is indicated in dotted lines in Fig. 6, wherein a flanged head 34 is shown inserted or planted in the body neck and resting against shoulder portion 28, the dotted lines showing substantially the normal unexpanded position of portion 26 and the full lines the expanded position. It will, of'course, be understood that the showing in the drawings is necessarily more or less diagrammatical.
The head 34 may be domed or diaphragmed to advantage, as indicated at 34. lVhen inserted with the diaphragmed portion down as shown in Fig. 5, most of the air in the top of the filled body is expelled in the operation of applying the head and suflicient air space is left by the diaphragmed portion 34 being reversed in the seating operation as shown in Fig. 6. An annular support 35 may be provided for supporting the container by the shoulder 28 during the operation of planting the head.
Heads of other forms may be used, as, for example, the disk head 36 shown in Fig. 7 may be inserted to expand the neck, and be held in place by the contractile force exerted thereby, but flanged heads may be preferred, as they may be made with flanges of substantial depth to secure a sealing engagement of substantial width and the relatively deep flange can be made continuous and extremely smooth to secure a hermetic seal, whereas with the disk head the edges of the disk are liable to be more or less chipped or broken and the region of contact is relatively narrow.
When the opening in the female die is substantially cylindrical, as shown herein, and a cylindrical head is inserted, as shown in Figs. 5 and 6, the ultimate form of closure with head in place may be substantially cylindrical I including shoulder 28 may thus be expanded neck portion, which contracts above the disk after same has been planted against the shoulder. Where flanged heads are used, they may be made of lighter material as one-ply material of flangedhead 34 shown in Fig. 8, and a disk 36 inserted within the flanged head 3% to give it additional stifi'ness to thereby insure maximum expansion of the renitent neck and consequently maximum lid holding or looking effect. Various other forms of head constructions may be used.
The invention is not limited to the particular showing made for the purpose of aflo rding an understanding thereof, but is of the scope defined in the following claims.
1. A paper container body having a shoulder for limiting the extent of lid insertion, and having an inturned marginal portion spaced at a material distance beyondsaid shoulder, the body wall between said shoulder and the inturned marginal portion being formed into a renitent and normally inwardly bulged portion adapted to be expanded by an inserted lid and to exert a gripping action on the lid. y a
2. A paper container body having a shoulder for limiting the extent of lid insertion, a substantially rigid consolidated marginal portion spaced a material distance beyond the shoulder, and the body wall being formed into a renitent and normally inwardly bulged portion between the shoulder and the consolidated margin adapted to be expanded by an inserted lid and to exert a gripping action on the lid. w
3. A paper container body having a shoulder for limiting the extent of lid insertion, a substantially rigid highly consolidated mar ginal portion spaced a material distance beyond the shoulder, and the body wall being formed into a relatively broad renitent and normally inwardly bulged portion between the shoulder and the consolidated margin, and a lid-having a substantially cylindrical flanged portion inserted in the body against said shoulder, said renitent portion of the body wall being expanded by said lid and serving to exert a gripping action on the flanged lid in a belt or annulus of substantial breadth.
4. The combination with a paper container body having a reenforced substantially consolid-ated marginal rim highly glazed and of high smoothness. a renitent, normally inwardly bowed neck portion, the surface whereof is unglazed and substantially frictional, and a shoulder at the base of the neck portion, of a flanged head of diameter in excess of the normal inner diameter of the inwardly bowed neck inserted therein, seat-ed against said shoulder and held in place by the contractile tendency of the body portion contacted thereby..
5. The combination with a paper container body having an inwardly turned substantially consolidated glazed rim of high smoothness, and a renitent, normally inwardly bowed neck portion adjacent thereto, the surface whereof is unglazed and of substantially frictional characteristic, and a renitent drawn shoulder at the base of said neck, of a head inserted in said neck, said head being of a size to expand the bowed portion of the neck into substantially cylindrical form.
6. The combination witha paper container body having a normally inwardly bowed renitent neck portion and a shoulder at the base of the neck portion, of a flanged head inserted within the neck portion and of a size to expand the neck portion into substantially cylindrical form, and a disk inserted within the head flange.
' In testimony whereof, I have signed in name hereto.
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US6502741||Mar 22, 2001||Jan 7, 2003||Taiyo Sealpack Co., Ltd.||Cylindrical body of fiber drum and method of fabricating the cylindrical body|
|US7040527 *||Jan 18, 2001||May 9, 2006||Taiyo Sealpack Co., Ltd.||Fiber drum, cylindrical body thereof, and method of fabricating the cylindrical body|
|International Classification||B65D43/02, B65D3/06, B31B17/00|
|Cooperative Classification||B65D2543/00546, B65D43/022, B65D3/06, B31B2217/082, B65D2543/00314, B65D2543/0049, B31B17/00, B65D2543/00268, B65D2543/00509, B65D2543/00092|
|European Classification||B31B17/00, B65D3/06, B65D43/02S5D|