US2808190A - Heavy-duty telescopic container - Google Patents

Description

Oct. 1, 1957 F. R. BUHRMASTER ETAL 2,808,190

HEAVY-DUTY TELEscoPIc CONTAINER FIGJ.

Oct. 1, 1957 F. R. BUHRMASTER ErAL 2,808,190

HEAVY-DUTY TELEscoPIc CONTAINER Filed July 2e, 1954 2 Sheets-Sheet 2 lili United States Patent C) HEAVY-DUTY TELESCOPIC CONTAINER Fred R. Buhrmaster, Webster Groves, and Willard G. Hunt, Ladue, Mo., assignors, by mesne assignments, to Crown Zellerbach Corporation, San Francisco, Calif., a corporation of Nevada Application July 26, 1954, Serial No. 445,864

1 Claim. (Cl. 229-23) This invention relates to heavy-duty fully telescoped vcontainers provided with interior reinforcements to protcct and strengthen the vertical and horizontal corners thereof and to insure high stacking strength.

The containers of the invention are primarily designed for the shipment of nails, bolts, spikes and other heavy commodities. Containers for such materials may be stacked ten to fifteen high during shipment and in storage, consequently, they must -be capable of withstanding a comparatively heavy top load without crushing, distortion or other damage. Another requirement is a smooth unobstructed bottom panel free of cracks, slits or overlapping closure aps. Small nails particularly, tend to work into and through any cracks, slits and the like with resulting hazard to the operators as well as damage to the container itself.

The keg or container of the persent invention fully meets the vdescribed requirements and is extremely economical in the use of board. It comprises substantially counterpart rectangularly lshaped inner and outer telel scopic sections, each provided with closure flaps on one end. The bottom section is provided with a U-shaped pad comprising a bottom panel coextensive with the inner face of the 'bottom ap closure and a pair of upstanding opposed panels coextensive with a pair of opposed walls of the bottom section. The free side edges Vof the bottom panel and of the opposed wall panels of the pad are provided with relatively narrow flanges folded at right angles to the vbottom panel and the opposed wall panels respectively, forming a reinforcement to each 'horizontal land vertical corner of the section, rigidizing` the structure and substantially increasing the top load rating of the fully telescoped container compared to its rating without the reinforcing member.

The containers are fully collapsible, thereby greatly reducing the warehouse space required Afor storing same prior to loading, compared with the wooden kegs which have been in common use in packing relatively heavy commodities of 'the class hereinbefore described.

An object of the invention is to provide a collapsible paperboard telescopic container of high stacking strength adapted for shipping Iand warehousing nails, bolts, spikes and other relatively heavy articles.

Another object of the invention is to provide a fully telescoped container rectangular -in shape with a U-shaped reinforcing member friction-fitted inthe `bottom section of the container to reinforce the vertical and horizontal corners and to provided substantially increased stacking strength for the telescopedcontainer.

.Another Vobject is to provided a paperboard telescopic keg for shipment of nails and other relatively heavy commodities comprising top and bottom full telescoping sections each closed at one end, the bottom section being reinforced by a bottom panel having integral upstanding opposed wall panels in flatwise relation and `coextensive with an opposed pair of walls of the bottom section.

A still further object of the invention is to provide a ICC reinforcing member for the bottom or inner section of a telescopic container, the member comprising a snugly titting bottom panel positioned atwise over the bottom flap closure with a pair of opposed upstanding panels integral with the bottom pan-el positioned flatwise against opposed walls of the section and relatively narrow flanges integral with the free edges of the bottom panel and the free side edges of `the upstanding panels, the bottom flanges being folded at right angles thereto and the panel flanges at right angles to the panels, thus providing reinforcements to all corners of the bottom sectionV of the container and substantially increasing the top load of the container in its closed position.

With the above and other objects in view, the invention consists of the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the drawings .and lset forth in the claims, it being understood that various changes in the form, proportions and details of construction within the scope of the claims may be employed without departing from the spirit of the invention and without sacrifici-ng any advantages thereof.

In the drawings which form part of Vthe specification, like numerals Vand symbols therein appearing refer to like parts wherever they occur:

Fig. 1 is a plan view of the blank from which the outer section of a container embodying a preferred form of the invention is formed;

Fig. 2 is a plan view of the reinforcing member for the innerY section of the container;

Fig. 3 is a plan View of the blank from which the inner section of the container is formed;

Fig. 4 is an exploded view in perspective of the rein forcing member erected, ready to Ibe inserted in the inner erected section with the outer erected section positioned to enclose the inner section and reinforcing member;V

Fig. 5 is an exploded View of .the erected bottom section partially cut away to show the reinforcing member positioned therein and the erected outer section ready to be telescoped over the inner section;

Fig. 6 is a horizontal sectional view of the inner section shown in Fig. 5 taken 'in the direction of the arrows 6-.-6;

Fig. 7 illustrates the fully telescoped container with a portion broken away to show the Iposition of the Vinner bottom section;

Fig. 8 is a vertical sectional view of the fully telescoped container shown in Fig. 7 taken in the Ydirection of the arrows 8 8;

Fig. 9 is a vertical sectional View of the container shown in Fig. 8 taken in the direction of the arrows 9 9;

Fig. 10 is a horizontal sectional view-of the vcompletely assembled container of Fig. 7 taken in the direction of the arrows l0-10.

The hl-ank for forming the outer telescopic section .of the container is shown at A, Fig. l. Transverse scores 1t) deue the walls 11, 12, 13 and 14 of one of the body sections. Alongitudinal score 15 denesthe upper edges of the section walls 'and the inner boundary off closure flaps 16, 17, 18Y and 19 which are separated from each other by transverse slots 20, 21 and 22. A sealing flap 23 is integral with the section wall 14, the inner edge being denedby transverse score 10. Handhole openings 24 and 25 may be cut in walls 13 and 15 if desired. A tear tape, indicated .byV lnumeral 2 6, .may be positioned on the inner rface of the blank A along aA longitudinal line immediately above the upper boundaries of handholes 24 and 2S.

The blank -for yforming a U-shaped reinforcing pad or member is shown at B, Fig. 2. Longitudinal scores 27 define the side edges of wall panels 28 and 29'and bottom panel 30 and the inner boundary of wall flanges 31 and bottom panel anges 32. Transverse scores 33 define the end boundaries of panels 28 and 29 and the side edges of the bottom panel 39. Slots 34, 35, 36 and 37 separate the anges 31 of the wall panels from the bottom panel flanges 32.

The blank for forming the inner section of the container is shown at C, Fig. 3. The side edges of wall panels 39, 40, 41 and 52 of the sections are defined by transverse scores 3S while the ends of the panels are defined by a longitudinal score 43 which score defines the inner edges of closure flaps 44, 45, 46 and 47. Slots 48, 49 and 50 separate the closure flaps 44, 45, 46 and 47 from each other. The inner edge of sealing iiap 51 is defined by transverse score 38.

The blank A may be conveniently erected by folding the wall panels into tubular form along transverse scores and attaching the flap 23 to the outer face of the free side edge of wall 11 by glue or stitching 52 and then folding the flaps 16, 17, 18 and 19 into closed position as shown in Fig. 4. The blank B Afrom which the reinforcing member is Iformed may be erected by folding the wall panels 28 and 29 along the transverse scores 33 into right angular relation to the bottom panel 30. The panel flanges 31 are 'folded inwardly along the scores 27 into right angular relation to the panels 28 and 29 with the entire free end edges 31a tightly abutting the inner face of the bottom panel 30, and the free end edges 31b in coplanar relation with the upper free end edges of panels 28 and 29. Flanges 32 are folded in right angular relation to the bottom panel 30 with their end portions in atwise relation to the outer face of the lower portions of the flanges 31. The erected reinforcing insert is shown in perspective `in Fig. 4 of the drawings.

The blank C for the inner section of the container is folded in the same manner as described for blank A with the flap 51 glued or stapied to the inner face of the outer edge of panel 42.

Upon the completion of the erection of the blanks A, B and C, the container may be assembled by inserting the reinforcing member B into the inner Asection C as shown in Fig. 5. In this assembled position the bottom panel 30 and Wall panels 28 and 29 of the member B fit tightly against the bottom closure and one pair of opposed section walls, respectively. The flanges 31 are positioned iiatwise against the other pair of opposed section walls, forming right angular supporting columns, the end edges 31a of the flanges tightly abutting the inner facey off the bottom panel 30. rThe outer section A may then be telescoped over the inner section whereby the free upper edges of the panels 28 and 29 and the end edges 31b of anges 31 will be in abutting relation to the inner face of the closure of section A, thus providing a high top load rating of the container and completing the full assembly thereof shown in Fig. 7.

From the foregoing description and the accompanying drawings it will be seen that in the telescoped position of the inner and outer sections of the container, each vertical corner is fully protected and reinforced throughout its length by a double thickness of paperboard and the end edges 31a and 31h, respectively, of the iianges of the reinforcing member, extend from abutting relation with the bottom panel of the reinforcing member to abutting relation with the closure of the outer telescopic section, thereby reinforcing and rigidizing the container and substantially increasing the top load rating. The reinforcing member also provides a protection to each 0f the horizontal corners of the bottom section and the bottom panel member thereof provides a smooth, uubroken, interior bottom surface.

This construction is especially suitable for paperboard containers or kegs for nails and the like. Small nails in particular tend to penetrate any unprotected joints, corner openings and the like, and ultimately damage the container. The hereinbefore described construction provides a smooth, continuous, reinforcing bottom which is very effective in preventing damage or break down of the container by penetration of nails or other small articles of hardware during handling and. transportation.

While a preferred embodiment of this invention has been illustrated and described, it should be understood that Various modifications may be employed without de parting from the scope of the invention as defined in the appended claim.

What l claim as my invention is:

A rectangularly shaped container formed of substantially similar inner and outer fully telescoped sect-ions each closed at one end by closure flaps, a substantially Ushaped reinforcing member positioned within said inner section, said member comprising a bottom panel with a pair of opposed upstanding walls integral with opposite edges thereof, the bottom panel being substantially coextensive with the closure of the inner section and said upstanding Walls being substantially coextensive with the adjacent inner section Walls, a pair of opposed narrow vertically extending flanges coextensive in length and integral with each of said opstanding Walls folded inwardly at right angles thereto and with vertical edges thereof in spaced alignment with each other, the anges having upper and lower free end edges in a horizontal plane, the flanges being disposed against adjacent Wall portions of the inner section, a horizontally extending flange at each edge of the other opposed edges of the bottom panel and coextensive in length and integral with the panel, the anges folded upwardly and with end portions thereof liatwise against the outer face of similar adjacent lower portions of said vertically disposed side wall flanges, the entire upper free edges of said opstanding wall and the upper horizontal edges of their attached vertical flanges being in abutting relation with an adjacent surface of the inner face of the outer section closure, and the bottom horizontal edges of said vertically disposed wall flanges being in abutting relation with an adjacent surface of the inner face of the bottom panel of said reinforcing member, thereby rigidifying the corners and substantially increasing the stacking strength whereby when the containers are stacked, compression forces are transmitted directly from the bottom corners of a superimposed 'container through the corner portions of a subjacent container directly to the upper edges of the flanges contacting the inner corner surfaces of the closure of the outer section downwardly to and through the lower edges of the iianges contacting the inner corner surfaces of the bottom panel of the reinforcing member.

References Cited in the tile of this patent -UNITED STATES PATENTS 636,930 Great Britain May 10,

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