Abstract: A telescopic carton assembly for compact shipment and storage of envelopes and the like which is readily converted and separated into two self-contained shipping containers with about twice the load-carrying capacity of the telescopic carton assembly. The convertible carton assembly is particularly useful in connection with pre-sorted mail and includes a pair of telescoping cartons. Each of the cartons has an outer panel with upright walls and a movable flap assembly for converting the carton from a portion of the telescopic carton assembly to a self-contained shipping container. Preferably, the movable flap assembly includes a movable panel and a pair of pivotable flaps. The movable panel and one of the flaps are positioned adjacent the outer panel within the interior of the carton when the carton is being used as part of the telescopic carton assembly.

Abstract: An improved construction for cardboard trays made from a single cardboard blank, in which the side panels are held in position by tabs formed around the outer corners of one of two adjacent side panels, where the tabs are folded over to enfold the edge or edges of the neighboring side panel having flaps formed on and folded inwardly therefrom.

Abstract: A closure for a cylindrically shaped ice cream carton or the like includes a unitary circular shaped plastic lid provided with a depending skirt portion. The top surface of the lid includes an inverted V-shaped bead extending concentric with and inwardly spaced from the outer circumference of the lid to provide a bead for retaining a plurality of similar lids in stacked relation, precluding them from slipping inwardly relative to each other. The top surface of the lid also includes a depressed centrally located area, which rigidifies the lid and provides a recess for labels containing printed indicia. The skirt of the lid includes a bottom, outwardly flared portion enabling the lid to be grasped and readily removed from tight fitting engagement with an ice cream carton and an upper, recessed portion to accommodate expansion of the ice cream carton without the lid popping off the carton.

Abstract: A disposable cat litter holding device such as a box or the like including a horizontally extending bottom preferably rectangular and attached along the ends thereof to upwardly extending end walls and attached at the sides thereof to upwardly extending side walls. An upper side member is secured to each side wall and extends inwardly therefrom horizontally over and parallel to the bottom. Similarly, upper end members extend horizontally inwardly from the upper edge of the end walls horizontally extending over the bottom. Flap means are secured to the sides of the side walls and are adapted to interlock with one another preferably by an interlocking tab and slot device. The end flaps are adapted to be interlocked inside of the end walls such that when the end walls are folded upwardly and the upper ends are folded inwardly a downward bias will be exerted on the interlocked end flaps to cause them to be secured in position and retain the overall structure of the disposable cat litter holding device.

Abstract: A tray having side wals and a bottom wall is provided with leakproof gusset corners including overlapping gusset panels connected by a center fold line. Side fiold lines connect the respective gusset panels to the side walls with sealing portions of the gusset panels extending the full depth of the side walls for full depth leakproofness of the tray. A cut-out in the inner gusset panel allows bonding of the outer gusset panel against the side wall strengthening the corner of the tray and assuring the sealing action. The cut-out in the inner gusset panel is particularly shaped to form the sealing portion and to allow maximum bonding of the outer gusset panel. A peripheral flange is formed of flange sections having alternate extensions with abutting edges to provide an equal width flange around each corner and the full periphery of the tray. During folding, the flange extension cooperates with a rounded corner of the sealing portion of the inner gusset panel to assure smooth and efficient folding action.

Abstract: A knock-down container assembly for packaging and containing ice-cream products wherein an articulated carton portion cooperates with an articulated cover portion through closure features which effectively lock the cover portion in place on top of the carton portion. Various protuberances or locking flaps in the carton portion cooperate with recesses or notched regions in the cover portion respectively to provide these locking features. The carton itself is constructed to contain either a standardized half-gallon volume of ice-cream products and is especially adapted for utilization on standard existing ice-cream product packing machinery.

Abstract: The invention discloses a hinged-lid packet for cigarettes formed from a one-piece blank and having a body comprising a front wall panel, a rear wall panel and side wall panels. A lid is hingedly secured to the rear wall panel and has a front panel and inner and outer side wall panels on each side. The outer side wall panels are adhered to the outer faces of the associated inner panels only over a portion thereof so that the two panels on each side lie in a face-to-face relationship to provide gripping means for gripping, when the lid is closed, upstanding portions flaps on frame side panels extending upwardly from the side wall to thereby hold the lid closed.

Abstract: A one-piece T-shaped carton blank is disclosed which is utilized to form a rectangular cross-sectional container having its top and bottom end panels sealed in a plane substantially perpendicular to its sidewalls. The carton blank is formed having a definite dimensional relationship between its end panels and side panels to provide improved nesting of multiple carton blanks upon paperboard sheet stock in an alternating inverted side-by-side relationship. A pair of end sealing tabs extend along the top and bottom edges of the blank side panels. One of the end sealing tabs is separated from the top end panel and from a side sealing tap to prevent tearing and to permit the complete welding of the side sealing tab up onto the top end closure panel of the carton blank. This separation of the end sealing tab in combination with displacement of the hinge line of the top end closure panel downward provides a liquid-tight corner seal for the carton.

Abstract: An improved composite container is disclosed including a tubular fibrous body wall having at its upper end a reversely curled portion the upper extremity of which is radially inwardly compressed in such a manner as to form an annular external locking projection by means of which a synthetic plastic closure cap may be fastened to close the container. Preferably the closure member is connected with the container by a tearable tamperproof connection including a radially inwardly directed annular rib that is locked beneath the annular body projection to maintain the closure cap on the container. A method is also disclosed for forming the container body, including the steps of radially outwardly curling the upper end of the body member, radially inwardly comressing the upper extremity of the reversely curled portion, and mounting a synthetic plastic snap-type closure member on the compressed curled end.

Abstract: A box for separating articles, such as seeds, small stones, or the like, from other materials, such as leaves, flowers, sand, soil, or the like, is formed from an integral blank which can be easily folded into a set-up configuration. The box can also be folded into a flat envelope or storage container which is conveniently carried in a pocket, such as a shirt pocket, or the like.

Abstract: An expanding file box includes a flat bottom panel and a pair of hollow side walls extending upwardly from each side of the bottom panel. The side walls have front and rear entrance openings leading into the interior thereof. The file box also includes flat front and rear panels connected to the front and rear edges, respectively, of the bottom panel to each pivot between a closed substantially vertical position and an open, outwardly tilted position. With the front and rear panels in open position, files or cards located within the box can be tilted relative to each other so that substantially the entire front face of the file is visible. The front panel includes a front sliding panel extending rearwardly from each side edge portion of the front panel to slidably extend into the hollow interior of a corresponding side wall to pivot with the front panel to form an extension of the side walls when the front panel is tilted in open position.

Abstract: A partition arrangement including a paperboard partition having alternately arranged longitudinal and transverse members each with projecting elements to prevent contact between adjacent articles which are arranged in side-by-side rows regardless of whether the areas of tangency are near the top, bottom or center of the partition.

Abstract: A folding box forming a hinged lid container especially designed for cigarettes and other smoking articles is provided with a stationary box, a rotating cap and a locking mechanism. The rotating cap and stationary box are provided with complementary locking elements within the walls of the box to effect a locking and unlocking of the cap with an accompanying click in the release and the joinder of the locking elements. The locking means form a part of the walls and lie in the respective planes of the walls when the cap is in the closed or open position.

Abstract: A container which has integral reinforcing panels and a divider panel and is formed from a unitary blank.

Abstract: A container seam includes an additional vertical section of metal and a corrugated outer surface for providing sufficient vertical seam strength to resist the crushing force exerted by an opener drive gear. An end member is provided with an overhang having a segment thereof folded back parallel upon another segment of the overhang. After a seaming process, the folded segments are vertically oriented and provide increased vertical strength. During said seaming process, the outside part of the seam is provided with vertical corrugations to further increase vertical strength.

Abstract: A carton and a blank for forming same has self-locking end closure flaps which are hingedly coupled to adjacent end edges of the side walls of the carton. Each flap of one pair of opposed end closure flaps has two elongated slots oriented at acute angles relative to the fold line between the respective panel and flap. Each flap of the other pair of opposed end closure flaps has angular side edges oriented at acute angles relative to the fold line between the respective panel and flap and a pair of tabs extending from those angular side edges. When fully assembled, the tabs are received in respective slots and overlie interior surfaces of the one pair of end closure flaps.

Abstract: A container designed for assembly without separable fasteners to comprise a leakproof receptacle or tray for use by meat packers and others. The container is formed from a single blank of corrugated fibreboard having a water-repellent surface. It comprises sides (23, 24) and ends (21, 22) rising from a bottom (10) orthogonally, and interconnected by webbed corners (25, 28). The ends are provided with flaps (30, 40) including lock tabs (31, 32, 41, 42) with tongues (33, 34, 43, 44) which cooperate with the flaps to hold the corners against the outsides of the ends, and the material is crushed, at the lower corners (110) of the container and at the points of action (120) of the tongues, to provide flexibility and prevent damage to the material at sharp folds.

Abstract: A self-erecting, collapse-resistant, self-locking carton is formed from a single blank of material. The bottom of the box is formed by two inward folding bottom sections. Each bottom section is formed from two elements and includes a scored locking flap. Forcing the box from a flat folded condition to an upright condition interengages and latches the two bottom sections together. Folding, tearing or removing the locking flaps disables the self-locking collapse-resistant feature thereby permitting the box to be refolded to the flat condition.

Abstract: A container with lid is disclosed having means for easily locking and unlocking the lid, and preventing unauthorized tampering with the locking mechanism. The locking mechanism comprises an apertured locking flap on the lid which is insertable into a locking recess in a wall of the container. The locking recess is confined by inner and outer wall portions. A locking tab extends from one of the wall portions into the locking slot to engage the aperture of the locking flap.

Abstract: A novel ice cream product container with complementary closure member is disclosed. The container body member is usually of paperboard and formed from an integral blank comprising edge-reinforcing flaps articulated to wall members, which reinforcing flaps are then folded down upon and secured to their respective wall members to provide a reinforced portion of double thickness in the container formed from the blank. This folded-over, reinforced portion is also present in the flat-folded tube produced from the blank, the squared-up tube, the erected container, and finally in the closed and filled package. This folded-over, reinforced portion of double thickness contains defined areas of low resistance adapted to receive lugs formed in a wall of the complementary closure member. The closure member also provides a complementary channel between essentially upstanding and downstanding walls for receiving the reinforced portion of the container walls in frictional engagement therewith.