US2144948A - Container - Google Patents

Description

Jan.- 24, 1939. H. .1.v WALLACE 2,144,948

' C-ONT-AI'NER Fi'ied Dec. 16, 1937 Figl,

INVENTOR HAROLD J. WALLACE ATTORNE 5 Patented it... 24, 1939 CONTAINER Harold J. Wallace, Utlca N. Y., assignor to Fonda Container Company, Inc., Utica, N, Y., a corporation of New York Application December 16, 1937, Serial No. 180,181 4 Claims. ((1229-45) This invention relates to containers having a body-formed of laminations of flbrous material,

such as paper, and adapted for thehandling and distribution of both solid and liquid materials. Moreparticularly, the invention is concerned with a novel container of the type described, in

which the bodyis generally of frusto-conical shape so that a plurality of the empty containers may be nested together to make a compact package for shipping and storage.

Nesting containers as commonly made heretofore have included a body made either of a single blank of material wound convolutely or of one or more blanks wound helically with the edges of adjacent convolutions overlapping. Such overlapped edges, present in each form, produce shoulders, both on the inner and outer surfaces of the body, and as a result, dii'ilculty'is encountered in providing such containers with tight fitting covers. The covers ordinarily used with containers ofthis sort either are formed to enclose the end of the container and make tight contact with the outer wall or are discs which are snapped into a recess in the inner wall. In either case, the presence of the shoulders referred to prevents the cover from iltting snugly and leakage may occur along the face of each shoulder. In addition, the convolutely wound container has a line of weakness represented by the seam which extends in a straight line from top to bottom of the body.

The present invention is directed to the provision of a nesting container which overcomes the defects of the prior containers above referred the body has no localized line of weakness and cover. The container body is of frusto-conical shape throughout at least the greater part of its length, and of substantially uniform thickness throughout its circumference. The body is made up of a plurality of laminations of paper or other suitable fibrous sheet material and each lamination is a separate blank of' material wound substantially helically withits adjacent edges abutting to define a seam of the same thickness as g the remainder of the laminations. The several laminations are secured together face to face ness resulting from the seams is thus distributed circumferentially about the body.

One end of the container body is fitted with a closure permanently secured in place and the other end is closed by a removable cover. A cover to and the new container is so constructed that with their respective seams oflset and the weak advantageous for the purpose comprises a cylindrical side portion and a circular top secured permanently in place therein. When such a cover is to be used, the container is formed with acylindrical end section of an outer diameter substantially equal to the inner diameter of the side portion of the cover, so that the cover will make a frictional lit with the end section throughout the circumference'iof the latter.

It is advantageous to provide the top or a cover of this type with an annular groove adapted to receive the upper edge of the container body. The annular groove in effect forms a valve seat that protects the upper edge of the container stances in the container coming in contactwith it and seeping into the inner porous structure of the paper. The use of such a valve seat also increases the effectiveness with which the body is closed by the cover. 1

Although covers substantially as described are particularly well suited for use with the new container, covers of other forms also may be em-.. ployed, as, for example, the simple disc type commonly used on milk bottles.

The invention may be better understood from' the following description considered in connection with the accompanying drawing, in which Fig.3"). is a side view of a container formed in accordance with the invention, the coverof the container being removed and shown above the dy; v

Fig. 2 is a vertical cross-section through the new container, showing one form of cover in place;

Fig. 3 is a vertical cross-section through a container of modified form having a different type of cover;

Fig. 4 is a vertical cross-section through the lower portion of a container having an alternative bottom closure; 7

Figs. 5 and 6 are plan views of the blanks from which outer and inner layers, respectively, of the body of the new container are made; and

, Fig. '1 is a plan view of a composite blank such as may be employed in the manufacture of the new containen. v

The containers shown include a body l0 which is of frusto-conical shape throughout at least the greater portion of its length, so as to permit nest- .50

ing together of a plurality of the containers. This is made of a plurality of laminations of suitable fibrous sheet material (e. g. paper), and in the various forms illustrated in the drawing,- an outer lamination II and an inner lamination by about half their length.

N 50 Any suitable bottom closure may be employed l2 are employed. Each lamination is formed of 'a blank wound substantially helically with its the form of a parallelogram with two angles obtuse and two acute. The blank l4 has .two opposite sides l6 and I1 cut on substantially arcuate lines curving in the same general direction but not having coincident centers and these arcuate edges l6 and I1 form, respectively, the lower and upper edges of the body to be made. The other two opposite edges l8 and IQ of blank l4 are cut on substantially straight lines which, if extended, would intersect one another at an acute angle of, for example, about this angle varying with the degree of taper desired in the body. The sides I 8 and I9 abut when the blank I4 is wound, and the length of these sides, measured along the lines on which they are out, should 'be equal.

As a result, the altitude of the blank adjacent the side 18 is slightly less than the corresponding dimension adjacent the side IS. The blank l5 for the inner lamination member is cut substantially the same as the blank l4. and it has two opposite sides 20, 2| cut on substantially arcuate lines and other sides 22, 23 cut on straight lines which, if extended, would intersect at a small angle. The blank i5 is cut to sl ghtly smaller dimension than the blank l4 so that the blanks when-wound will fit together tightly.

Various methods may be employed for windizm the blanks to form the body, andin Fig. 7 there is illustrated. development of the blanksv in the relation which they bear to one another in the completed body. As shown, the two blanks lie with their upper and lower arcuate edges substantially in alignment and are ofiset lengthwise at the lower end of the body and in the containers shown in Figs. 2 and 3, the bottom closure is a disc-shaped member 24 of paper or other suitable material, having its edge turned downwardly to form a flange 25, the edge of this flange being turned upwardly to form an inner annular bead 26. The disc is inserted in the body and the lower edge of the latter is turned inwardly and upwardly to form the inner wall 21 of an annular channel 28 in which flange 25 and bead 26-of the closure are received. In the operation of securing the bottom in position, the inner wall 21 may be creased inwardly to form a head 29 which overlies head 26 on the disc 24 and this results in the closure being held more securely-in place. The free edge '30 of the inner wall 21 of the channel then'lies within an annular recess 3| formed in the closure adjacent the flange 25, where it is. held by the inner wall 32 01' the recess 31.

The modified form 33 of bottom closure, shown in Fig. 4, consists of a disc of paper or other suitable material having a downwardly turned flange 34 alongits edge. The closure 33 is mounted in the lower end of the container body I with the wall 35 ofthe body.

The shape of the upper end of the container depends on the type of cover to be employed. In the container shown in Fig. 2, the cover comprises a cylindrical portion 36 and a top 31. To secure the top in position, one edge 38 of the cylindrical portion is turned inwardly to define a channel 39 and the edge of the top is turned to form an annular flange 40 which enters this channel. The outer edge of flange 40 is turned over to form a bead 4|, and the inner wall 38 of the channel 39 may be crimped inwardly to form a bead 42 engaging with the bead The free edge 43 of the inner wall 38 enters a circumferential recess 44 formed in top 31 near the side portion 36 and is held in place by the inner wall 45 of thisrecess. In order that covers of the type described may be mounted on body ID with a tight fit, the body is formed with a short cylindrical end section 46. This section has an outer diameter substantially equal to the inner diameter of the side portion 36 of the cover, so that the side portion makes a close fit with the end section of the body.

For some uses, it maybe desirable to provide the container with a cover which prevents the contents from reaching the end edge of the body. For this purpose, an annular groove 41 adapted to receive the edge of the body is formed in the no shoulders or other irregularities of substantiallygreater or less thickness than the average that form crevices through which liquid materials can pass.

A modified form of cover that may be used with the new container described is shown in Fig. 3. In this modification, the cover 48 is a disc of paper or other suitable material, and the container body, which may have a cylindrical end section or not, as desired, is provided with a circumferential groove '49 in its inner wall near the upper edge. The internal diameter of the container body measured across the groove 49 is substantially equal to the diameter of the cover 48, so that the latter may be pressed into the upper end of the body until the edge of the cover enters the groove 48, whereupon the cover is held firmly in position.

I claim:

l. A'containercomprising a body of frustoconical." shape throughout at least the greater part of its length and of uniform thickness throughout its circumference, said body comprising laminations of fibrous sheet material, each lamination being formed of a blank wound substantially helically with its edges abutting and defining a seam, the. weakness resulting from said seam being distributed circumferentially about the body, and said laminations being secured together face to face with their respective seams offset, and a closure secured to said body to close one end thereof.

2'. A container comprising a body of frustoconical form throughout the greater part of its length and of uniform thickness throughout its circumference, said body being made up of laminations of fibrous sheet material, each lamifrom those of the next lamination,-said laminations being secured together face to race to form the body and said body having one end thereof shaped to form a cylindrical section, and a closure secured to the body to close the end remote from the cylindrical section.

3. In a container a body of irusto-conical form throughout at least the greater part of its length,

said body having smooth inner and outer surfaces and comprising laminations of fibrous sheet material, each lamination being formed of a blank wound substantially helically with its edges abutting and defining a seam, the weakness resulting from said seam being distributed circum- 3 terentially about the body, said laminationsbeing secured together face to face with their respective seams oflset, the body being iormedowith a circumter'ential channel in its inner wall near its,

larger end.

4. A blank for a, body member oil a container comprising a sheet of fibrous material cut generally in the shape of a parallelogram with two opposite angles obtuse andthe other two opposite angles acute, two opposite sides of said blank being cut on substantially arcuate lines curving in substantially the same direction, and the other two opposite sides being cut on substantially straight lines which, if extended, would intersect at arelatively small angle.

HAROLD J. WALLACE.

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