US 3295740 A
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Description (OCR text may contain errors)
Jan. 3, 1967 H. R. HALL TRIANGULAR CARTON 5 Sheets-Sheet 1 Filed March 10, 1965 FIG.1
INVENTOR. Harrison R. Hall BY My ATTORNEY Jan. 3, 1967 H. R. HALL TRIANGULAR CARTON 5 Sheets-Sheet 2 Filed March 10, 1965 INVENTOR. Harri son R. Hall ATTORNEY Jan. 3, 1967 H. R. HALL 3,295,740
TRIANGULAR CARTON Filed March 10, 1965 5 Sheets-Sheet s INVENTOR. Harrison R. Hall ATTORNEY United States Patent 3,295,740 TRIANGULAR CARTON Harrison R. Hall, Painted Post, N.Y., assignor to Corning glas Works, (Iorning, N.Y., a corporation of New Filed Mar. 10, 1965, Ser. No. 438,685 2 Claims. (Cl. 22922) The present invention relates to an improved polygonal carton or container and the blank for forming same, and more particularly to a completely self-contained, mailable triangular carton having a pilferproof, positive-lock bottom.
In the past, it has been necessary to bind or seal cartons with cords, adhesive tape, and the like to insure that the cartons remained closed during transit. This significantly increased the cost of shipping and required extra, burdensome labor cost.
Furthermore, modern esthetic packaging, using novel geometric shapes, creates a customer appeal which the well-known rectangular and square shapes can not produce. Customer appeal is further created by offering consumer items in an easily transportable and readily mailable carton. A tamperproof carton assures a consumer that the item received has not been meddled with in transit.
In modern packaging operations where economics is important, a reduction in packaging materials results in greater cost reduction. Less material is used in the present invention to package a handled consumer item, than packaging the same item in known rectangular or square cartons. The present invention, further, is nestable, thus requiring a smaller shipper carton for any given amount of ware shipped. Greater economy is further realized because the blank can be glued and shipped in a collapsed condition yet may be easily assembled, locked, filled and closed with a minimum of labor and cost.
Basically this invention relates to an easily glued and shipped carton blank, which may be easily set up and filled and is readily closed and locked. A carton erected from said blank is pleasing to the eye, the contents thereof pilferproof, and the article packaged thereby can be readily mailed, as it is purchased, without further wrapping. It has thus been an object of the present invention to provide a tamperproof carton.
A further object is to provide an esthetic, easily mailable container having a triangular shape.
An additional object of the present invention has been to provide an improved carton having an unglued snaplock bottom, and a top lock which will remain closed during transit without requiring binding means.
A still further object of the present invention has been to provide a less expensive, easily glueable and readily shippable carton blank.
Another object of the present invention has been to provide an easily assembled, filled, locked and closed container.
Other objects and advantages of this invention will be more apparent to those skilled in the art from the following disclosure and accompanying drawings in which:
FIGURE 1 is a plan view of a blank for forming a container embodying the present invention.
FIGURE 2 is a top plan view of a partly assembled container embodying the present invention and formed from the blank shown in FIGURE 1 illustrating the pilferage proof, snap-lock bottom thereof in an assembled position.
FIGURE 3 is a perspective view of a carton embodying the present invention with the top lock in a locked posi- 1011.
FIGURE 4 is a top plan view of an assembled container embodying the present invention.
FIGURE 5 is a sectional View of the assembled container taken along line 5-5 of FIGURE 4.
FIGURE 6 is a sectional view of the assembled container taken along line 66 of FIGURE 4.
Referring now to the drawings, in FIG. 1 a blank 9 formed of corrugated board is shown for erecting an improved triangular carton. The blank 9 has a back panel 13, side panels 15 and 17, and may be provided with a conventional glue flap 11. The panels 17, 15, 13 and flap 11 are separated and hingedly connected by crease or scorelines 19, 21, and 23 respectively which extend transversely across blank 9.
An intermediate bottom flap 25 and an interior separator flap lid 27 are formed integrally with back panel 13 and separated therefrom by crease or scorelines 29 and 31 respectively. Flap 27 may be omitted when a one-piece ware article is to be packaged. An interior b0ttom flap 33 and an upper cushioning pad flap 35 are formed integrally with side panel 15, and separated therefrom by crease or scoreline 37 and an intermittent crease or scoreline 39 respectively. An exterior lock bottom flap 41 and an outer top closure flap 43 are formed integrally with side panel 17 and separated therefrom by crease or scorelines 45 and 47 respectively.
The top flap 43 is provided with a tuck-in tongue flap 49 projecting outwardly from one side thereof and connected to flap 43 by an intermittent crease or scoreline 51. A U-shaped female locking slit 53 is formed along a portion of crease 51. The longitudinal portion of slit 53 is slightly offset with respect to crease line 51 so as to form an opening when tuck-in flap 49 is folded downwardly along crease line 51.
A male top lock tab 55 is formed partially out of side panel 15 and upper pad flap 35 by means of a U-shaped slit or cut line 57. The male lock tab 55 is hingedly attached to side panel 15 by crease lines 59 which aid in the locking function thereof. A slit line 61, slightly ofiset from creaseline 39, extends outwardly from opposite sides or male lock tab 55. The slit line 61 forms an open portion when flap 35 is folded along crease 39, and when in an assembled position, tuck-in flap 49 is relatively insertable into said open portion. Male tab 55 is relatively insertable in the opening formed by female locking slit 53.
An asterisk slit 63 and surrounding intermittent, circular crease line 65 may be formed in separator lid 27. A handle portion or knob of a ware article cover may be pushed through asterisk 63. Thus the cover may be held securely in place during transit and separated for another ware portion thereby preventing abrasion between portions. Crease lines 67 facilitate the easy manipulation of lid 27 when a cover is attached thereto so that the lid and attached contents may be positioned within the carton.
A continuous crease or score line 69 is formed in separator flap 27, back panel 13, and bottom fia-p 25. Crease line 6h allows the side panels and back panel to be joined, glued and shipped in a collapsed or flat condition. The collapsed carton folds along crease line 69 and 19. A glue flap 11 when present may be adhesively attached to the inner or outer surface of side panel 17. The scoreline 69 is so situated so that it does not appreciably weaken the carton once the top and bottom are assembled.
Bottom flap 41 is provided with a male tongue portion 71 projecting outwardly from one side thereof. Interior bottom flap 33 is provided with a recessed portion 73. The male tongue portion 71 engages the recessed portion 73 when flaps 25, 33 and 41 are in their locked position.
In partially assemblying a carton from blank 9, the crease lines 19 and 69 are folded so that the carton has a flat configuration. In this position glue flap 11 when used is relatively adhesively secured to panel 11 by hand or mechanical methods. To decrease shipping costs, the
carton may be economically shipped in this collapsed condition.
FIGURE 2 depicts an initial stage in setting up the carton for receiving ware to be packed therein. To assemble the carton in accordance with FIGURE 2, the various panels 13, 15, and 17 and glue flap 11 are folded into a triangular configuration along scores 19, 21 and 23.
The bottom flaps 33, 25 and 41, forming a bottom end or closure portion of the carton are assembled into a closed and locked position. The interior bottom flap 33 is first folded inwardly along crease 37 to an angle of about 90 with side panel 15. Intermediate bottom flap 25 and exterior bottom flap 41 are then folded inwardly along creases 29 and 45 respectively. Male tongue portion 71 is depressed inwardly until the tongue passes through and beyond the recessed portion 73, at which time the resiliency of crease 45 snaps the lock flap 41 outwardly, locking the bottom closure portion in a closed position, with male tongue '71 underlying a portion of flap 33. Accordingly, any outward force extended on the bottom end portion by ware packaged therewithin, increases the degree of locking effected by the bottom flaps.
After the bottom closure portion of the carton has been assembled, as previously described, and w-are positioned therewithin, the top flaps 43, 35, and 27 are folded to :form a locked top end portion wherein the carton is in a locked condition suitable for transit and mailing without additional adhesive or binding.
Interior lid 27 is first folded inwardly alOng crease 31 to an angle of about 90 with the rear panel 13. When a ware article cover is shipped with the ware, the handle or knobul ar portion of the cover may be pushed through the asterisk slit 63 which folds along intermittent circular crease line 65. Separator flap 27 is folded inwardly along creases 67 to position the ware cover below the plane of the top end portion and to separate the various ware portions. Thus the cover may be held securely in place and the separate ware portions prevented from abrading during storage and transit.
The male tab 55 is folded backwards along creases 59 from side panel 15, in a manner shown in FIG. 6, and pad flap 35 is folded inwardly along crease 39 to form a slot or opening along slit 61.
Tuck-in flap 49 of top flap 43 is folded along crease 51 so as to form an angle of approximately 90 with the plane of flap 49 and form a slot or opening along U- shaped, female locking slit 53. Top flap 43 is then folded inwardly along crease 47. During the downward movement of flap 43, the tuckin flap 49 is directed through the opening formed by slit 61 and positioned within the carton adjacent the upper portion of the inner surface of side panel 15. The tab 55 is then folded inwardly and directed through the opening formed by slit 53 and positioned within the carton adjacent an outer portion of the inner surface of flap 43. Thus the top portion of the container is assembled in a closed and locked position as hereinbefore described. The assembled container now may be stored and shipped without requiring additional binding or sealing media.
Thus the present invention provides an esthetic package using a novel geometric shape. Such package is easily transportable and readily mailable yet is locked in a manner so as to be tamperproof. A more economic package results because a lesser amount of board is used as compared to known rectangular car-tons. Quantity shipping of blanks is less expensive because blanks may be transported in a collapsed state. Quantity shipping of assembled and filled cartons is less expensive because the containers are nestable in reverse order adjacent each other.
It will be understood that various changes in the details, materials, steps and arrangements of parts, which have been herein described and illustrated in order to explain the nature of the invention may be made by those skilled in the art within the principle and scope of the invention as expressed in the appended claims.
1. A triangular carton having improved closure means which comprises, a back wall panel and a pair of side wall panels connected together along score lines; a bottom closure flap foldably secured to the lower edge of each wall panel, one of said bottom closure flaps being an interior flap having a recessed portion formed therein, another of said bottom closure flaps being an intermediate fiap lying adjacent said interior flap, and the other bottom closure flap being an exterior locking flap having a male tongue portion cooperatively positioned within the recessed portion of said interior flap; a top closure flap foldably secured to the upper edge of each side wall panel, one of said top closure flaps having a slit line formed along a portion of its foldable connection forming an open portion therealong, a locking tab for-med partly out of said one top closure flap and its associated side wall panel, the other of said top closure flaps having a tongue flap foldably projecting from one edge thereof with a locking slit formed along a portion of such fold, and said tongue flap projecting through the open portion formed by said slit line with said locking t-ab projecting within said locking slit to provide a triangular carton having improved easily lockable closure means.
2. A carton as defined in claim 1 wherein a separator flap is hingedly secured to the upper edge of said back wall panel with a plurality of crease lines for positioning said separator flap within the carton in a plane parallel to, and between, the plane of the top and bottom closure flaps; and an asterisk slit is formed in said separator flap for receiving a portion of a ware article and maintaining it in position.
References Cited by the Examiner UNITED STATES PATENTS 1,875,044 9/1932 Leiper 22922 1,897,143 2/1933 Powell 229-22 X 1,996,778 4/1935 Wellman 229-22 X 2,220,110 11/1940 Layton 22922 2,227,341 12/1940 Greenwood 22922 3,140,811 7/1964 Hall et a1 22939 3,140,813 7/1964 Hall et al 229-39 JUSEPH R. LECLAIR, Primary Examiner.
D. T. MOORHEAD, Assistant Examiner.