US1870688A

US1870688A - Paper-board box

Info

Publication number: US1870688A
Application number: US406685A
Authority: US
Inventors: Page John Ernest
Original assignee: GUARDIAN TRUST Co
Current assignee: GUARDIAN TRUST Co
Priority date: 1929-04-19
Filing date: 1929-11-12
Publication date: 1932-08-09
Anticipated expiration: 1949-08-09
Also published as: FR690226A; NL29443C; DE585474C; GB343732A

Description

g- 9, 1932 J. E. PAGE ,&

PAPER 50m 301:

Filed Nov. '12. 1929 Patented Aug. 9, 1932 p Y mam-:1) sg' 'rEs PATENT OFFICE JOHN ERNEST PAGE, OF SYDNEY, AUSTRALIA, ASSIGNOR, BY IESNE ASSIGNMENTS, TO THE GUARDIAN TRUST COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO, TRUSTEE FOR GIBSON PATENT CONTAINERS, LTD-, A CORPORATION OF NEW. SOUTH WALES, AUSTRALIA PAPER-BOARD BOX Application filed November 12, 1929, Serial No. 406,885, and in Australia April 19, 1929.

This invention relates to paperboard boxes or containers for containing retail quantities of dried fruits, confectionery, and other products, and in particular it relates to boxes 5 in which interfitting but unattached bottom,

side, and top members of stiff paperboard are bound together in assembled relation by a Wrap of flexible film or fabric material which E forms a close fitting envelope but is not glued or otherwise fixed to the paperboard pieces.

Boxes made on this principle are economical for the packer, inasmuch as ready cut sheets of paperboard and the wrap sheets may be kept in flat condition during transport and .1 storage, thereby minimizing space, and the container can be assembled complete in set-u form and ready for packing with speed an facility.

In one known construction of such paperboard boxes a wrap sheet which consists of textile or gauze fabric or tough flexible paper or cellophane or like filmy material is stretched flat under one end of the structure and is gathered up and pleated over the sides of the structure, and its marginal portion is creased and pleated down flat over the top end of the structure; and fastening of the whole assembly is effected by fixing an adhesive sticker or seal piece over the converged edges of the wrap sheet.

Box bodies and lids heretofore have also been produced on a similar principle by assembling paperboard side and end pieces without fastening them together, drawing a wrap sheet about them, infolding the edges of the wrap sheet over the side pieces, and forcing a false end piece into the body or the lid thus formed so as to flatten down and stretch the infold of the wrap sheet against the interior face of the sides and to secrete the edge portions of it under this false end piece. In

this type of construction the lid must be made larger in diameter than the body in order that it may be slipped over the body.

One of the objects of the present invention is to so modify the known methods of construction as to make it practicable to have the lids identical in size with the bottom end member, in order to facilitate production of both said parts in the same presses and with rim and end paperboard parts of identical size and flexible wrap sheets of reduced size for the bottom end member.

Another object of the present invention is to economize the area of the wrap sheets; the wrap sheets are the most costly element in the structure; as in most cases material such as silk, or cellophane, or a costly paper is psel in order to procure a desirable finish ef- This invention also comprehends a container having a bottom end member and a continuous tubular member of paperboard material. The bottom end member may comprise a side wall or rim portion and a bottom portion held assembled together by a wrap sheet. The tubular member, which forms a portion of the body of the container, is forced into the bottom end member and extends above the rim portion any distance convenient and desirable to properly contain the contents. An oversize false bottom insert or piece of stiff paperboard material is forced into the tubular member to bind the tubular member and bottom end member together in firm, set-up, assembly and without the use of glue, staples, or other fastening means. The tubular member, expanded outwardly by the oversize insert piece, firmly clamps the inturned edge of the wrap sheet between the tubular member and rim portion of the bottom end member. Thus the rim portion and bottom portion of the bottom end member are also securely bound together without the use of glue, staples or other securing means. My container can be manufactured at low cost since no gluing or stapling operation is necessary. The container is especially useful in the packaging of dried fruits, confectionery and food products which are liable to become contaminated from glue, staples or similar securing materials.

The invention will be described with more particularly with reference to the accompanying drawing, in which Fig. 1 is a perspective view of a five-sided container constructed according to the invention;

Fig. 2 is an exploded view showing the various parts of the container, A being the false bottom or insert piece, 13 the side liner or tubular member, C the bottom rim portion,

D the wrap sheet shown under the box bottom. in the first stage of the assembly, and E l the bottom portion set down on the wrap sheet D. The ends of the strip of pasteboard which forms the rim C may be lapped and con'oined by a tongue and slot fastening 10, or t ey ma be abutted and secured together by a paste on paper lap 11, as shown in the case of the tubular member B;

Fig. 3 is a perspective view of the lid; and Fig. 4 is an exploded view of the 11d parts comprisinfiwrap sheet F, top G, mm H, and

15 false end For the wra sheets, thin silk or like fabric,

parchmentize paper, or a synthetic substance such as cellophane is used. Whatever the material, it must be such that when creased and pleated and drawn taut it W111 lie flat and close against the pasteboard structure, and it must have suflicient strength to bind the asteboard parts and maintain the shape and integrity of the bottom end membet. The bottom end member obtains its stiffness from the interfitting paperboard elements and it obtains its integrity from the wrap sheet. When the wrap sheet is made of transparent material, printing applied to W the pasteboard sides or ends will be v1s1ble through the wrap.

The containers may be made in any practicable shape; they may be triangular, rectangular, polygonal, circular, or ovate, to suit any particular demand, and elther one or both ends may be apertured to offer a view of the contents through the flat stretched part of the wrap sheet (if it be transparent).

The structural members comprising the 4 container (other than the wrap sheet) are formed of pasteboard, paperboard, fibreboard or like materials, 0 appropriate stiffness, having regard to the size and shape of the box.- These'structural members comprise an end or bottom portion E. a continuous rim portion C with tangs 14 on its bottom edge formin the bottom end member of the container. continuous side liner or tubular member B, preferably with tangs 15 on its bottom edge, is telescoped into the bottom end member. A false bottom or oversize stiff insert piece A is then forced into the tubular member, expanding the same into frictional bindi enga ment with the rim portion C.

The H for t e container may comprise an,

end G, a continuous side H with tangs 17 on its top edge, and false end K.

The paperboard pieces of which the body and the lid sides are made are notched along one edge and creased intermediate the notches to form tangs (14, 15 and 17). These tangs are bent atright angles to set against the ends E and G respectively; they are embraced between the respective-ends E and G and the .5 insert pieces A and K when the parts are assembled. The rims C and H when bent to the desired shape, are conjoined at their meeting ends either by a cemented tab 18, Fig.4, over a butt joint, or alternatively by an interlocking tang and slot arrangement shown at W 10, Fig. 2, in a lapped joint. Similarly, the ends of the tubular member B may be Joined together by thecemented tab 11 to form a continuous side or body wall. The side liner or tubular portion B of the container body is made to extend any desired distance above the rim portion C.

A deep former block havin the internal plan dimensions and shape of t e box is used to facilitate assembling of the arts. so

In building a bod the wrap s eet D is first set down on a tab e symmetrically over an aperture therein which is the same in shape and external plan dimensions as the box to be produced; over the wrap sheet D the bottom piece E is set down in register with the table aperture. I

Then a strip of pasteboard is notched along one edge and its ends butted and secured together by a lap of thin tou h paper glued over the joint. The length 0 this stri is the peripheral measurement of the box si e, and the notchings are shaped and s aced appropriately to the plan shape of the ox to rmit the strip to be bent to that shape. T us, in the case of a cylindrical box there would be a lar e number of V-notches in close order, to facilitate the bending of the strip to form a ring, and in the case of a rectangular box there would be four ri ht angle notches mo spaced apart symmetrical one for each corner. Optionally the ends of this stri may be connected by a tongue and slot lappe joint as shown at 10, but it is preferred to use the butt joint with paper lap fastenin s. When its ends are connected the strip becomes a continuous band. The tangs 14 on the band which intervene between the notches are bent inward, and the band is 'then slipped u onto the block with these tangs inbent un er the no block. The block is then forced down, so as to draw the wrap sheet with the bottom piece E, lying on it, down through the aperture in the table. The block corresponds in plan shape with the table aperture and with the box plan, but the table a rture is a little larger t an the block to 0 er clearance for the thickness of the band and the skirt of the wrap sheet which is pleated up over the band.

The part of the wrap sheet which is not directl over the table aperture is thus caused 'to be rawn up and pleated and pressed flat about the rim portion C which is formed by the band. The former block is now withdrawn, and the upstanding marginal portions operation the infolded part 12 of the wrap sheet is-drawn down taut and pressed fiat against the interior face of the rim portion C, and is embraced tightly between the rim portion G and the tubular member B, and the inbent tangs 15 on the bottom edge of the tubular member B are secreted between the insert piece A and the bottom portion E. The insert piece A, inserted after the tubular member B has been forced into the bottom end member, struts or expands the bottom part of the tubular member B outwardly against the rim C, thus frictionally binding the tubular member B and the bottom end member together in fixed engagement, without the use of glue, staples, or other fastening means. The wrap sheet D need not be larger than is necessary to provide sufiicient skirt to infold over the rim C, as shown at 12, Fig. 2, so that it will be secured effectively between the interior face of the rim C and the exterior face of the tubular portion B.

In building the lid, the same table and the same assembling block are used. The top piece G, insert piece K, and rim portion H, are identical with the corresponding parts in the bottom end structure. The wrapsheet covering the bottom end member need be no larger than is necessary to leave a liberal infold 12 on the inside face of the rim C, but the lid inwrap 13 must be large enough to line the lid sides H and to underlie the insert piece K. The lid wrap sheet F is set down on the apertured table, the end piece G superposed on it in register with the table aperture below, the block, carrying the rim portion H with its tangs 17 infolded, is pressed down, and the whole assembl is forced through the table aperutre, there y causing the wrap sheet to be drawn up and pleated over the exterior of the lid side. The block is now retired, and the upstanding margin portion of the wrap sheet is infolded as at 13 over the lid rim H with margin 13a: of the wrap lying on the interior face of the top piece G. The insert piece Kis then forced into the lid so as to draw down, stretch and pleat the infolded portion at 13 over the interior face of the rim H, embracing the edge portions 134:: of the wrap between the end G and the false end K.

In boxes according to this invention a wrap sheet of smaller area than was previously necessary can be used. The economy in cost A of wrap material thus. efiected is of great practical importance as that material is the most costly element in the structure. What I claim as my invention and desire to secure by Letters Patent is 1. In a container, a bottom end member comprising an annular side wall having inturned members at an end, a bottom piece disposed outside of and overlying said members, a wrapping of flexible material covering said bottom piece and side wall and being tucked down within said side wall, a body comprising a tubular member with inturned members at an end, said body being telescoped within the side walls of said bottom end member to firmly hold said wrapping therebetween, and an insert piece inserted within said tubular member to hold said tubular member firmly against said tucked-in wrapping and against the side wall of the bottom end member.

2. A container of the character described, comprising, a continuous tubular member of fibreboard material forming a body portion of the container, a bottom end member comprising a bottom portion and a side wall portion telescoped over one end of said tubular member, said tubular member having tang portions projecting inwardly and resting on the inside face of said bottom end member, and a stiff oversize insert member Within said tubular member, said insert member having its peripheral edge pressed against the tubularmember whereby the tubular member and the bottom end member are secured together in frictional binding engagement to provide a complete set up container assembled without the use of further securing means.

3. A container of the character described, comprising, a continuous tubular member of comparatively stifi' paperboard material forming a body portion of the container, a bottom end member comprising a bottom portion and a rim portion telescoped over one end of said tubular member, said tubular member having tang portions projecting inwardly and resting on the inside face of said bottom end member, and an oversize stiil' insert member within said tubular member, said insert member having its peripheral edge pressed against the tubular member to hold said tang portions seated closely against the inside face of the bottom portion of said bottom end member, said insert member also pressing the tubular member against the rim portion of said bottom end member whereby the tubular member and the bottom end member form a complete container secured together in firm assembly by frictional binding engagement only.

4. A container of the character described, comprising, a continuous first wall portion formed from relatively stiif paperboard material, a separate second wall portion surrounding said first wall portion, said first wall portion extending a substantial distance beyond said second wall portion and having elements projecting inwardly, and means including a stifl insert member pressed against said elements and also pressed against said first wall portion to frictionally bind said' first wall portion and, said second wall portion in firm fixed assembly without the use of further securing means. g

5. A container embodying a bottom end member, said bottom end member having an upstandin rim portion, a continuous tubular member 0 paperboard material formin a body portion of-i-Zthe container, said tubu ar member having its lower end within said rim and resting on the bottom portion of said bottom end member, said tubular member having a series of free end tangs extending inwardly and restin on said bottomportion, and a stiff oversize insert piece forced down into said tubular member and against said tangs so as to expand said tubular member outwardly against the inner face of said rim portion and bind said tubular member and bottom end member in fixed assembled relationship without the use of other securing means.

6. In the production of containers, these steps which include providin a continuous tubular member/of stiff paper card material with anendseries of longitudinal foldable tangs, inserting the lower open end of said tubular member into a separate exterior bottom end member, said bottom end member having a bottom ortion and an upstanding annular rim portion, said tangs being bent inwardly into the open end of the tubular member and positioned to rest on the end portion of the bottom end member, and with the lower end of the tubular member snugly surrounded by said rim portion, inserting a still oversize insert iece through the open upper end of said tu ular member and forcing the same down into said tubular member tightly against said tangs, and with the peripheral edge of the insert piece tightly engaging the surrounding tubular member so as to expand the same against the surrounding rim portion and frictionally bind said tubular member and bottom end member together in fixed assembled relationship without the use of further securing means.

In testimony whereof I afiix my signature.

JOHN ERNEST PAGE.