US2438982A - Container - Google Patents

Description

M. I. WILLIAMSON April 6, 1-948. 7

CONT AINER Filed July 29, 1943 :5 Sheets- Sheet 1 April 6, 1,948.

M. WILLIAMSON CONTAINER Filed July 29, 1943 3 Sheets-Sheet 2 II!!! III .1111 I 1 r 1 4 ,1 VII/IIII/l/l/ll! I; llzllllllfrllllllll INVENTOR. Harsh/l [iii/12mm):

A ril s, 1948'.

M. WILLIAMSON 2,438,982

CONTAINER Filed July 29, 1945 3 Sheets-Sheet 3 INVEN TOR.

flz rsfiall IhW/armsvn dank/1% L2:

position, th thereof are substantially fiush with the outside Patented Apr. 6, 1948 plural) STATES PATENT OFFICE I CONTAINER l Marshall I. Williamson, New Haven, ('Jonn., as-

signor, by mesne assignments, to National Folding Box Company, Incorporated, a corporation of Connecticut Application July 29,1943, Serial No. 496,537

and cover sections may be cut and scored in.

multiple from large sheets or rolls of paperboard or other suitable material on standard automatic cutting and scoring machines at a high production rate. The blanks may be shipped in fiat condition and in stacked relationship to the product manufacturer in a manner to occupy a minimum space during shipment and storage, and

7 Claims. (Cl. 229-23 or wholly formed from metal.

may thereafter be assembled by the product manufacturer, as needed, on available standard box assembling machines in an economical manner at a high production rate by relatively unskilled labor.

The inner shell, assembled from the one-piece blank in accordance with this invention, may it self comprise a wholly self-contained receptacle comprising enclosing side and end walls into which the product may be conveniently packaged, if desired, prior to the insertion of the inner shell into the outer shell. The inner shell has locking flaps associated therewith adapted to snap into locking engagement with appropriately shaped recesses provided in the adjacent side walls of the outer shell, so that the inner shell may be permanently locked in proper position within the outer shell to prevent separation thereof. The sidejwallsand bottom wall of the outer shell provide stifi' and sturdy reinforcement for the inner shell so that the container may be stacked,.pi1ed or roughly l-h'andled without weakening, or causing loss of or damage to, the contents. The cover section is so made as to snugly telescope over the topendof the inner shell to further reinforce thesame When; the cover section is placed in e outside surfaces of the sideflanges flees of the adjacent side wall panels of the outer shell, providing a smooth-walled container of finished and attractive appearance,

The top wall panel of the inner shell may be provided with a perforate defined section which may beeasily removed to provide access to the 2 contents, or the top wall of the innershell may be provided with a permanent opening which is closed by the cover section.

The container as constructed and assembled,

presents multi-ply side walls, a multiply bottom wall, and a multi-ply top wall, making the container unusually rigid and lastingin service,

An object of this invention is to provide an improved container formed from paper board, fiberboard, or like material, which is sturdy and strong in construction and which efiectively meets the packaging requirements of numerous and various products, such as powdered or granu-f lar substances as well as pellets, flakes or other larger articles, which have heretofore generally been packaged in containers or canisters partially Another object of this invention is to provide an improved paperboard container for the packaging of such products, which can be economically assembled at a high production. rate by available standard box assembling machines.

Another object of this invention is to provide a sturdy container formed from paperboard material, which can be economically produced, which is attractive and neat in appearance, which can be shipped toithe product manufacturer in flat I or partially assembled form so as to eflect economies in shipping and storage space, and which can for the most part be assembled, filled and sealed by the product manufacturer on available standard equipment by relatively unskilled labor.

Otherobjects and advantages will parent as the disclosure proceeds. I

Although the characteristic features of this invention which are believed to be novel are particularly pointed out in the claims appended become aphereto, the invention itself, as to its objects and advantages, and the manner in which it may be carried out, may be better understood by referring to the following description taken in'con nection'with the accompanying drawings forming a part hereof, in which:

Fig. 1 is a plan (view of the inside face of a prepared blank from which the inner shell may be formed;'

Fig. 2 is a plan view of the inside face of a prepared blank from which the outer shell may be formed; l

Fig. Sis a plan view of the inside face of a pre-' pared blank from which the cover section may be formed;

Fig. 4 is a perspective view of the blank shown in Fig. 1 partially assembled to provide a collapsed inner shell; l

Fig. 5 is a perspective view of the inner she as it appears when partially erected;

Fig. 6 is a perspective view of the fully assembled inner shell, lying on its side in inverted position from that shown in Fig. 5;

Fig. 'l is a perspective view of the outer shell as it appears when partially assembled from the blank shown in Fig. 2;

Fig, 8 is a perspective view of the fully assem bled outer shell;

Fig. 9 is a perspective view of the fully assembled outer shell, inner .shell and cover section arranged for telescoping assembly into a unitary container;

Fig. 10 is a perspective view of the complete container showing the cover section removed and certain of the interior construction in dotted 'a side wall section of the container as it appears when viewed along line lI-ll of Fig. 10;

Fig. 12 is a plan view of the inside face of a prepared blank from which an inner shell of somewhat modified construction may be assembled;

Fig. 13 is a perspective view of the blank shown in Fig. 12 partially assembled to provide a. collapsed inner shell;

Fig. 14 is a perspective view of the modified inner shell formed from the blank shown in Fig, 12 as it appears when inverted and substantially completely assembled;

Fig. 15 is a plan view of the inside face of a blank from which a further modified form of inner shell may be made;

Fig. 1.6 is a perspective view of the blank shown in Fig. 15 partially assembled to provide a collapsed shell of the modified construction; and i Fig. 1'7 is a perspective view of the inner shell formed from the blank shown in Fig. 15 as it appears when substantially fully assembled and lying on one of its sides.

Similar reference characters refer to similar parts throughout the several views of the drawings and the specification.

The improved container constructed in accordance with this invention comprises an outer shell which may be constructed as shown in Fig. 8 from the blank B shown in Fig, 2 and into which an inner shell may be telescoped. The inner shell may be constructed as shown in Fig. 6 from blank A shown in Fig. 1 or, as an alternative, may be constructed as shown in Fig. 14 from the blank A shown in Fig. 12 or, as a further alternative, may be constructed as shown in Fig. 1'7 from the blank A" shown in Fig. 15. All the illustrated forms of inner shell are designed to telescope into an outer shell of the type shown in Fig, 8. A cover section constructed as shown in Fig. 10 from the blank 0 shown in Fig. 3, is designed to telescope over the top end of the inner shell. The outer shell, inner shell and cover section may each-be formed from a single blank of paperboard material which is so shaped and creased as to permit high speed assemblythere of on standard available box assembling machines. I

The inner shell A, as shown more particularly in Fig. 1, comprises a top wall panel I and a bottom wall panel 2 joined along the parallel extending score lines 5 by an intermediate sidewall panel 3. A side wall panel 4 diametrically opposite the side wall panel 3 is hinged to the top wall panel I along a score line 5'. A pair of side wall panels I l are hinged to the other diametriaaaaeea cally opposed side edges of the top wall panel I along parallel extending score lines 9, so that the inner shell when assembled comprlses'four side wallpanels 3,4andii,li.

A pair of sidewall securing panels 14 project laterally from and are connected to the bottom wall panel 2 along a pair of parallel extending score lines 9'. A pair of side wall supporting flaps 8 project from and are hingedly connected to the side wall panel 3 along a pair of parallel extending'score lines 9.". A similar pair of side wall supporting fiaps 8 project from and are hingedly connected to the side wall panel 4 along a pair of parallel extending score lines 9".

A securing flap 8 projects from and is hingedly connected to the bottom end of side wall panel 4 along ascore line I extending parallel with the score'line 5. Securing flap 6 is designed to be attached to the opposite free edge of the bottom wall panel 2. A locking flap l2 projects from and is hingedly connected to the top end oi. each of the side wall panels ll along a. score line I! which extends substantially parallel to the score lines 8. The top wall panel I may be provided with a circular line of perforations l5 permitting the center section l5 thereof to be removed to ive access to the contents of the shell when assembled, filled and sealed.

The blank A, as shown in Fig. 1, may be rapidly assembled into shell formby passing it through a conventional strip gluing and folding machine which applies adhesive to the under or outer surface of securing flap 6, folds side wall panel 4 over the top wall panel I and folds bottom wall panel 2 over the sidewall panel 3 bringing the free edge of the bottom wall panel 2 into adhesive contact with theglued surface of the securing flap 6, as illustrated in Fig. 4. Quantities of the thus partially assembled shell shown in Fig. 4 may be shipped and stored in such fiat collapsed condition to be set up by the product manufacturer as needed.

The collapsed inner shell as shown in Fig. 4 may next be readily expanded into the form of a rectangular tube comprising the side wall panels 3 and 4 and their respective pairs of extending flaps 8, the top wall panel I and its extending opposite side wall panels H and the bottom wall panel 2 and its extending side wall securing panels M. In this condition the tubularly formed shell is open at both ends, which ends are in reality two of its sides through one of which the shell is adapted to be filled with its intended contents after the opposite open side has been closed.

To close one of these open sides of the tubularly expanded shell, preparatory to filling same with contents, the side wall supporting flaps 8 at that side are first turned inwardly, as illustrated in Fig. 5, then the adjacent side wall securing panel I4, bearing adhesive over its outer surface, is folded inwardly to overlie and rest upon the supporting flaps 8 and, finally the associated side wall panel ii is also folded inwardly to overlie and adhere to the securing panel i4 The inner shell, with one of its open sides thus securely closed and sealed in the manner described is then inverted for filling and similar closing and sealing of. its remaining open side. The shell as thus filled and fully closed and sealed, appears as shown in Fig. 6, with the locking flaps i2. extending beyond the bottom wall. panel 2. The closing and sealing operations described may be performed on standard automatic machines, widely available for the purpose, and the shell, as th'us constructed, is substantiall siftproof and may readily be handled without damage or loss of contents. When inserted and encased in its outer shell and cover, pursuant to this invention, a container of considerably greater strength is provided capable of holding products of substanm1 bulk and weight. a t

The outer shell forming blank B, as shown in Fig. 2, comprises a bottom wall panel 20 of generally rectangular form, opposed side wall panels 29 hinged to the bottom wall panel 20 along parallel extending score lines 30, and a pair of opposite side wall panels 2| hinged to the bottom wall panel 20 along a pair of parallel extending score lines 22. The'side wall panels 2| are each provided with a pair oLengaging flaps 23 hinged to each side edge thereof along a pair of parallel extending score lines 30! which are slightly out of alignment with the score lines; 30 to permit folding assembly of the blank into shall form.

It will be noted that the lower edge of each of Q the engaging flaps 23 are separated from the adjacent side edge of the adjacent side wall panel The cover section forming blank, as shown in Fig. 3, comprises a top wall panel 35 having a pair 29 by a cut-out notch so that the lower edge of each engaging flap 23 .is provided with a straight edge portion 23 extending substantially parallel to the adjacent free side edge of the adjacent side wall panel 29, and a mitered or beveled edge portion 21 which extends at approxi-' mately a'45 angle to the a acent score line', intersects the adjacent corner of the bottom wall panel 20 and extends to the inner end of the adjacent straight edge portion 26.

The outer or upper end of each of theside wall panels 2| isprovided with an edge fla 28 The outer shell may beassembled from the blank B on standard box assembling equipment.

' Preparatorily, however, the blank is first fed through a standard strip gluing and folding'machine which operates to apply adhesive to the inside face of the edge flaps 28 and fold these flaps into adhesive engagement with the inside faces of their respectively associated side wall panels 2|, as illustrated at the lower part of Fig. 2. The blank may then still be shipped to the product manufacturerin flat condition. The product manufacturer then places the thus prepared blank on a standard box assembling machine, which operates to raise the side wall panels 2| into a position substantially at right angles to the bottom wall panel 20, and to turn the engagin flaps 23 inwardly, asshown in Fig. 7.

The machine also operates to apply adhesive to the inside faces of the edge flaps 3| of the side wall panels 29 and to raise the latter to a position substantially at right angles tothe bottom wall panel 20 ,and against the outer surfaces of the inturned engaging flaps 23. Finally, the machine turns the adhesive bearing edge flaps 3| in and down over the upper edges of the engaging flaps 23 and into adhesive engagement with the inner surfaces thereof, thus completely forming a fully assembled outer shell as illustrated in Fig. 8. When inverted the assembled outer shell appears as shown in the upper view of Fig. 9.

of opposite flange forming panels 33 hinged thereto along parallel extending score lines 31 and another pair of opposite flange forming panels 40 hinged to the top wall-panel 35 along a pair of parallel extending score lines 4|. 4 securing tab 381s hinged to each end of each of the flange forming panels 36 along a score line 4| which is slightly out of alignment with the adjacent scorev line 4| andeach of the securing tabs 38 is separated from the adjacent end of the adjacent.

flange forming panel 40 by a notchedslot 42 to facilitate folding assembly of theblank into cover form. An edge flap 46 is hinged to each of the flange panels, 36 along a score line 43 extending parallel to score line 31, and an edge flap 43 is hinged to each of the flange panels 40 along a score line 44 extending parallel to the score line 4|. The blank C is of such size-and conflgum tion. .that the resulting cover section formed therefrom will telescope snugly over the top end of the inner shell.

The cover section-may be assembled from the blank C on a standardassembling machine in substantially the same manner as heretofore described for the outer shell section,aiter first V similarly folding and adhesively securing the edge flaps 45 to the inside faces of their respectively associated flange forming panels 36 as shown at the lower part of Fig. 3. blank is then placed on the assembling machine which, as similarly for the outer shell, operates to raise the flange forming panels 36 vertical to the top wall panel 35, turns in the securing tabs 38, applies adhesive to the edge flaps 43 of the flange panels 40. raises the latter against the securing tabs and turns the said edge flaps in and down over the upper edges of the said tabs and into adhesive engagement with the inner surfaces'thereof, thereby completing the formation of the cover section as shown, thus formed, in the lower view of Fig. 9 and the upper view of Fig, 10.

It will be appreciated that the collapsed inner I shell as shown in Fig. 4, the prepared outer shell forming blank B as indicated in Fig. 2, and the prepared cover section forming blank C as indicated in Fig. 3, may all be shipped to the product manufacturer in fiat form, thus effecting substantial economies in shipping and storage space.

By the use of standard box assembling equip ment the product manufacturer may complete assembly of the inner shell, outer shell and cover section in the forms shown in Fig. 9, it being understood that, when the inner shell has been partially assembled with one side wall still open,

the product may then be deposited therein. When the product has been so deposited in the thus partially assembled inner shell, the open side wall may then be closed and sealed by folding the supporting flaps 8 inwardly, folding the side wall securing panel l4 over the inturned flaps 8, and inwardly folding the side wall panel upon and into adhesive engagement with the said side wall securing panel H, The inner shell, containing the product, as thus assembled and sealed, in itself provides an effective and substantially siftproof package which is further reinforced and protected when telescoped and en-* and 10.

In finally assembling the'three separate parts of the complete container, an advertising or in- The thus prepared 7. struction folder or booklet b may first be placed insld'e of the inverted cover section, as shown in the lower view of F18. 9, and the closed top end of the inverted filled and sealed inner shell may then be telescoped therein. The inverted outer shell may then be telescoped over the bottom end of the inner shell, as indicated in Fig. 9, with the recesses formed by the cut-out notchesv 25 in the engaging flaps 25 when the outer shell has been v telescoped to its full depth over the inner shell as shown in the lower view of Fig. 10. It will also be noted that the cut-out notches 25 of the outer shell are of such size, configuration and dispositlon that the locking flaps i2 will seat fully within the recesses formed by the said notches, as illustrated in Figs. and 11. The locking flaps 12, when folded out and forced down as described, possess substantial resiliency and will snap into the recesses formed by the notches 25 when the outer shell has been vtelescoped toits full depth over the inner shell. The inner shell is thus securely locked within the outer shell and cannot then be removed therefrom without laceratin the paperboard, inasmuch as the straight edge portions 26 of the engaging flaps 23 of the outer, shell are in substantial abutment with the straight edge portions l2 of the respective locking flaps l2, and the beveled edges 21 of the engaging flaps 23 will also be in substantial abutment with the beveled edgesl2" of. the locking flaps l2.

As thus fully assembled a neat and attractive container is provided, which is substantially siftproof and very sturdy in construction, capable of withstanding hard usage, and the three component parts of which can readily be assembled on standard box forming equipment. The completed container provides an admirable substitute for canisters wholly or partially formed from metal and heretofore used for the packaging of various powdered, granular, or solid products of substantial weight and bulk. Access to such contents of the container may 'be had by removing the cover section and breaking out the removable section i5 of the top wall panel of the inner shell as shown in Fig. 10.

There is shown in Fig. 12 a prepared blank A from which an inner shell of somewhat-modifled construction may be assembled. The inner shell A comprises side wall panels 5|, 52, 53 and 54 hingedly connected along parallel extending score lines 55, and a securing flap 56 \hinged along score line 52' to side wall panel 52 which flap may be secured to the free edge of sidewall panel 54 to form a tubular body. A top wall-forming flap 51 is hinged to the top end of each of the side wall forming panels 5| and 53 along a scoreline 58 and a top wall supporting fiap 59 -is hinged to the top end of each of the 8 I v positionedtoalignwiththeaperturee llintbo topwailforming-fialll l'lwhentheshellisassembled. a

The inner shell is provided with a closable bottom which comprises a primary bottom walliorming fiap 55 hinged to the bottom end of side wall panel It along a transverselyextending score line 52, and a secondary'bottom wall forming flap Ii hinged to the lower end of side wall panel ll along a transversely extending score line 52'.

A bottom wall supporting flap 55 is hinged to the bottom end of each of the side wall panels 52 and 54 along a transversely extending score line 42". A locking flap 54 is hinged to eachside edgeof the primary top wall forming flap 5! along a longitudinally extending score line 55 which is substantially in alignment with the adlacent l nsitudinally extending score line 55 defining the ad,- iacent side wall panel 55. It will be noted that the locking fiaps 54 each have a straight longitudinal edge 54', each end of which terminates at a beveled end edge, 54", the opposite ends of which latter in turn each terminate at the respective ends of theadiacent hinge score line 55, and that this edge formation of the locking flaps 64 results in a complementary notched outside edge formation of each of the adlacentsupporting flaps 55 consisting of the longitudinal portion 86' and the beveled portion 88".

The blank shown in Fig. 12 can alsobe assembled on standard paper box forming machines after first being formed into a collapsed tubular shell on a strip gluing and folding machine which applies adhesive to the securing flap 55, folds side wall panel 5i to overlie side wall panel 52 and folds side wall panel 54 to overlie side wall panel 53, thereby bringing the free edge of side wall panel 54 into adhesive engagement with the sethe tubular body, comprising side wall panels 5|,

5'2, 53 and 54, is first expanded to rectangular form as shown in Fig. 14, then the top wall supporting flaps 59 are turned inwardly and the top wall forming flaps 51 are folded inwardly over the inturned supporting flaps 59 and adhesivel'y secured one over the other. The supporting flaps 59 are of such size and shape that each will underlie the respectively adjacent halves of the top wall forming flaps 51 without obstructing the apertures therein when the latter are folded inwardly upon them and secured in place to provide the fully formed top wall of the inner shell with its resulting dispensing opening therein.

The machine similarly forms the bottom wall of the inner shell by inturning the bottom wall supporting flaps 66 so that they lie in substantially the same plane, then folding the primary bottom wall forming fiap 63 thereover, as shown in Fig. 14,

and finally folding and adhesively securing the secondary bottom wall forming flap 5i thereto. As thus assembled, the locking flaps 84 will project over the adjacent side wall panels 52 and 54 as shown in Fig. 14. The inner shell as thus formed may then be inverted and filled with the merchandise contents by pouring or inserting the same through the aligned openings 55 and 50' formed in the flaps 51 and 55 respectively. If no such opening is provided the contents may be inserted into the inner shell beforethese flaps, or

. cut-out recesses 25 associated with the outer shell.

The upper end of the inner shell may also be closed by means of the cover section shown in the upper view of Fig. and the lower view of Fig. 9. The container thus formed is adapted for the packaging of numerous and various products, is substantially siftprooi, strong and sturdy in construction, and will withstand much abuse in handling.

There is shown in Fig. a blank A" from which a further modified form of inner shell may be assembled as shown in Figs. 16 and 1'7. The blank A" comprises a top wall panel H which may be provided with a removable section "H' separated from the main part of panel II by a line of perforations 'II". A side wall forming panel 12 and an opposite side wall panel 13 may be hinged to the top panel 1| along a pair of parallel extending score lines 15. A side wall forming flap 80 is hinged to each side edge of the side wall panel-12 along a pair of parallel extending score lines 19'. A pair of side wall forming flaps 8| may also be hingedly connected to side edges of side wall panel 13 along a pair of parallel extending score lines 19". tom wall panel 14 is hinged to the bottom end of side'wall panel 13 along a score line and a securing flap 16 is hinged to the bottom end of side wall panel 12 along a score line 11. It will be noted that the score lines 15 and TI extend substantially parallel with one another.

The top wall panel H is provided with a pair of flap sections 18 hinged thereto along parallel extending score lines 19 and which extend between but are separated from the adjacent side wall forming flaps 80 and 8!. A somewhat similar pair of flap sections 84 are hingedly connected to the bottom wall panel 1| along a pair of parallel extending score lines 19. It will be noted that the score lines 19' and 19" are slightly A vbot-- blanks maybe cut and scored in multiple from out of alignment with the adjacent score lines l9,to permit proper folding and assembly of the blank into shell form. A locking flap 82 extends from the bottom end of each of the side wall panel forming flaps 8| which are partially formed by the material removed from a notched cutout in the adjacent bottom edge of fiap sections 84. Each of the locking flaps $2 is provided with a straight edge portion 82' and beveled corner portions 82" and are shaped to fit into the recesses 25 provided in the outer shell, shown in Figs. '7, 8 and 11.

In assembling blank A" into an inner shell, the blank is run through a strip gluing and folding machine which applies adhesive to the securing flap 16, then folds side wall panels 12 over top wall panel 1i and folds bottom wall panel. a

14 over sidewall panel 13, bringing the free edge of the bottomwall panel" into adhesive contact with the securing fiap 16, as shown in Fig. 16. The collapsed tubular inner shell, as shown in Fig. 16, may be shipped and storedin its fiat condition until such time as the product is to be packaged therein.

The product manufacturer expands side wall panels I2 and 13, bottom wall panel 14 and top wall panel II into the tubular .form shown in Fig. '17. One of the fiap sections 84 associated -.s'ide wall panels of the outer shell.

with the bottom wall panel I4 and the adjacent fiap section It associated with the top wall panel II are then turned inwardly so as to extend substantially in alignment. Side wall flap is then folded over fiap sections 18 and 84 and side wall flap 8| folded over and adhesively secured to side wall fiap 80, as shown in Fig. 17. The inner shell may now be filled with the product before i curing the remaining side wall :flap ill overthe side wall fiap 80.

The innershell as shown in Fig. 17 and. formed from the blank A" is substantially siftprooi' in construction and is adapted to telescope into the outer shell shown in Figs. v'7, 8 and 10. The locking flaps 82 are shaped to fit snugly within the-recesses 25 of the outer shell so as to lock the inner-shell firmly in telescoped position within the outer shell. The cover section. formed from the blank shownin Fig. 3 and illustrated more particularly in assembled form in the upper view of Fig. 10 and the lower view of Fig. 9, may then-be telescoped over the top end of the inner shell to provide an attractive and sturdy container for the packaging of powdered or granular materials of substantial weight and bulk.

It is now seen that'an improved container is provided, formed from an inner shell, an outer shell, and a cover section, adapted to be telescopically arranged; and each formed from a .single blank 01' paperboard material which can be assembled into constituent container parts on standard boxassembling machines. Each of the faces 01' the cover forming fianges substantially fiush with the outside adjacentsurfaces of the The container as thus constructed is adapted for the packaging of numerous forms of powdered or granular products which have heretofore been packaged in sealed canisters wholly or partially formed of metal. This improved container is more economical to construct and assemble than various canisters heretofore used, is adapted to be shipped and stored in fiat, knocked down condition, effecting economies in shipping and storage space, and .can be quicklyand economically assembled and filled with various products on standard box assembling machines by rela-] tively unskilled operators.

While certain novel features of the invention have been disclosed herein and are pointed out in 'the annexed claims, it will be understood that various omissions, substitutions and changes may be made by those skilled in the art without departingfrom the spirit of the invention.

What is claimed is: 1. An improved paperboard. container comprising an outer shell and an inner shell, the

outer shell consisting of a body member and a.

. cover member, both members being telescopically slidable over said inner shell into edge to edge abutment with each other so as to enclose said terial having a bottom wall panel, enclosing side 1 wall panels, top wall panel, and a pair of locking naps hingedly extending from the lower edges of oppoflte' side wall panels, said locking flaps being ioldable back upon the respective side wall panels from which they extend: said body member being i'ormed from one single sheet or paperboard material and having a, bottom wall, enclosing side walls, intumed reenforcing flaps extending irom the upper ends of said side walls and means forming an abutment edge along the inside faces of opposite side walls adjoining the lower edges of said side walls for engaging said locking flaps to retain said inner shell in locked telescoped position within said body member; the cover member being formed from a single blank of paperboard material and comprising a top wall panel, enclosing side wall flanges and inturned reenforcing flaps lining the inside faces of said flanges.

2. An improved paperboard container comprising an outer shell and an inner shell, the outer shell consisting of a body member and a cover member, both members being telescopically slidable over said inner shell edge to edge abutment with each other so as to enclose said inner shell completely: said inner shell being formed from one single blank of paperboard material having a bottom wall panel, enclosing side wall panels, a topwall panel, and a pair of locking flaps hingedly extending from the lower edges of opposite side wall panels, said locking flaps being toldable back upon the respective side wall panels from which they extend; said body member being formed from one single sheet of paperboard material and having a bottom wall, enclosing side walls, inturned reenforcing .ilaps extending from the upp r ends of said side walls, two of said side walls having complementary securing flaps extending inwardly from the side edges of the body member and secured to the inside faces oi the adjacent side walls of the body member, said securing flaps each having a. notched cut out at their lower ends providing recesses to receive said locking flaps and presenting abutment edges adapted to lock in abutment the edges of said locking flaps to retain said inner shell in locked telescoped position within said body member; the cover member being formed from a single blank oi! paperboard material and comprising a top wall panel, enclosing side wall flanges and inturned reenforcing flaps lining the inside faces of said 3. An improved container comprising, an inner shell formed from a single blank of paperboard material having interconnected side wall panels, a bottom wall panel connected to the side wall panels, a top wall panel connected to the side wall panels, and'a locking flap separate from the side wall panels and hingedly connected along the lower edge of at least one of said side wall panels; an outer shell formed froma single blank of paperboard material having a bottom wall panel and interconnected side wall panels attached to said last named bottom wall panel, said last named side wall panels being lower than theside wall panels of said inner shell and adapted to receive said inner shell snugly in telescoping position therein, said outer shell having an abutment means along the inside face one of its side wall panels adjacent the lower end thereof adapted to interlock with said locking flap associated on the inner shell to lock the inner shell in telescoped position within the outer shell; and

'a cover section adapted to telescope over the upper portion of the inner shell extending beyond the upper edges of the side wall panels of the outer shell.

4. An improved paperboard container comprising, an inner shell having interconnected side wall panels, a top wall panel connected to the side wallpanels, and a bottom wall panel connected to the side wall panels, said top wall panel having a dispensing opening therein, and a pair of locking flaps separate from the side wall panels and extending from the lower edge oi. opposite side wall panels; and an outer shell having a bottom wall and interconnected side wall panels attached to said last named bottom wall, said last named side wall panels being adapted to receive said inner shell snugly in telescoping position therein, two of said side wall panels oi. the outer shell each having an engaging flap extending inwardly from a side'edge thereof and secured 'to the inside face of the adjacent side wall panel of the outer shell, said engaging flaps each having a notched cut-out at their lower ends iorming a recess to receive said locking flap the edge of said cut-out presenting an abutment edge adapted to abut an edge of said locking flap to retain the inner shell in telescoped position within the outer shell.

said bottom wall panel, side wall flaps hinged to the side edges of said first side wall panels and adapted to be folded under the, adjacent inner side wall panels, and locking flaps hinged to the bottom edges of said outer side wall panels; an

outer shell formed from a single blank of paperboard material having a bottom wall panel and enclosing side wall panels shorter than the side walls 01' said inner shell adapted to receive saidinner shell singly in telescoping position therein, and abutment means along the inside faces ofopposite side panels of the outer shell providing a terminal locking edge adapted to engage the terminal edge of said locking flaps on said inner shell to lock the inner shell in telescoped position within the outer shell; and a cover adapted to telescope over that portion of the inner shell extending beyond the upper edges of the side wall panels of the outer shell.

6. An improved substantially siitproof container comprising, an inner shell formed from a single blank of paperboard material having top and bottom walls of single ply paperboard, two enclosing side walls of single ply paperboard and two side wall panels ofplural ply paperboard, and

a pair of locking tabs extending from the lower end of said inner shell adapted to be folded to overlie said plural ply side walls; an outer shell formed from a single blank 01' paperboard material having a single ply bottom wall panel, side walls shorter than the side walls ,of saidinner shell and comprising two side wall panels of 13 l single ply paperboard, two side wall panels of plural ply paperboard, and two flaps hinged to the upper edges of said single ply side walls, said flaps being secured to the inside surface of said single ply side walls, the innermost ply of said plural ply side wall panels being cut out to present abutment edges adapted to engage said locking tabs, said inner shell fitting snugly in said outer shell and retained therein by inter-' locking of said lock tabs with said abutment edges; and a cover section adapted to telescope over that portion of the inner shell extending beyond the upper edges of the side wall panels of the outer shell.

7. An improved substantially siftproof con tainer comprising, an inner shell formed from a single blank of paperboard material having top and bottom wall panels and enclosing side wall panels connected to said top and bottom, at least two opposed panels being of multiple ply paperboard, said inner shell having a-pair of locking panels, and abutment means on the inside of said inner shell in said outer shell; and a cover formed from a single blank of paperboard material adapted to telescope over that portion of the inner shell which extends beyond the upper edges of the side Wall panels of the outershell, said cover section having a top wall panel, enclosing side wall flanges and inturned reinforcing flaps lining the inside faces of said flanges.

MARSHALL I. WILLIAMSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 640,766 Hibson Jan. 9, 1900 1,146,517 Potter July 13, 1915 1,223,232 Ash Apr. 17, 1917 1,723,150 Gannon Aug.'6, 1929 1,896,361 'ldebrand, Jr .Feb. 7, 1933 2,003,326 ellman June 4, 1935 2,025,589 Huye Dec. 24, 1935 2,073,272 Wellman Mar. 9, 1937 2,165,070 Ringler July 4, 1939 2,170,420 Markert Aug. 22, 1939 2,178,967 Markert Nov. 7, 1939

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