US3272421A - Self-locking carton - Google Patents

Self-locking carton Download PDF

Info

Publication number
US3272421A
US3272421A US36650064A US3272421A US 3272421 A US3272421 A US 3272421A US 36650064 A US36650064 A US 36650064A US 3272421 A US3272421 A US 3272421A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
flaps
pair
slots
carton
flap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Gerald E Perry
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Owens-Illinois Inc
Original Assignee
Owens-Illinois Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/02Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
    • B65D5/10Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end closures formed by inward-folding of self-locking flaps hinged to tubular body

Description

Sept. 13, 1966 G. E. PERRY 3,272,421

SELF-LOCKING CARTON Filed May 11, 1964 INVENTOR. GERALD E. PERRY FIG. 6 MA M ATTORNEYS United States Patent 3,272,421 SELF-LOCKENG CARTON Gerald E. Perry, Waterville, Ohio, assignor to Owens- Illinois, Inc., a corporation of Ohio Filed May 11, 1964, Ser. No. 366,500 5 Claims. (Cl. 229-39) This invention relates to improvements in self-locking bottom cartons.

More particularly, this invention relates to a carton whose bottom may be easily set up [from one side without requiring access to the interior thereof.

It has been the practice in the past, particularly in the case of cartons which are intended to hold light material such as potato chips held in polyethylene bags, that the cartons are made of relatively light container boards and the erecting of the cartons, particularly the bottoms thereof, has necessitated folding the bottom into interlocking arrangement and then requiring the person erecting the box to reach inside and push the bottom outwardly to form the interlocked bottom. These cartons also required bottom closing flaps which necessarily have a width greater than one-half the width of the box. In other words, the bottom flaps require more board than the regular slotted container.

With the foregoing in mind, it is an object of this invention to provide a collapsible carton having a self-locking bottom construction.

It is an additional object of this invention to provide a carton having a self-locking bottom which requires no more boa-rd than a regular slotted container.

It is a further object of this invention to pro-wide a bottom structure for a carton, IWheIeln the bottom of the carton may be formed by inwardly and downwardly folding hinged flaps into interlocking relationship which upon release automatically form a planar bottom without requiring access to the inside thereof.

Other and further objects will be apparent from the following description taken in conjunction with the annexed sheet of drawings, wherein:

FIG. 1 is a plan view of the blank from which the carton is formed;

FIGS. 2-5 are perspective views of the carton bottom construction of the invention illustrating the sequence of folding to lform the self-locking bottom; and,

FIG. 6 shows the top closing arrangement of the carton of the invention.

Referring to the drawings, the carton of the invention is composed of tour side wall panels 10, 11, 12 and 13 joined together in a tubular configuration by the usual manufacturers joint with a tab 14. The panels 13 have downwardly extending flaps 15, 16-, 17 and 18 hingedly connected thereto.

As can readily be seen when viewing FIG. 1, the flap is provided with two spaced-apart slots 19 and 20 formed in the lower free edge thereof which extend toward the panel 10 a predetermined distance. In a like manner the flap 17 is provided with slots 21 and -22 which extend inwardly from the free edge of the panel a predetermined distance. The flaps 16 and 18, which have substantially the same configuration, are generally comprised of trapezoidal-shaped portions 23 and 24 wvith the base of the trapezoid portions being hingedly connected to the panels 11 and 13 respectively. The flaps 16 and 18 also have integrally formed therewith outer portions 25 and 26 which are of a predetermined width and, as will be apparent from the following description relating to the manner of erecting the carton, should be of a width of approximately twice the length of the slots 19-22. The upper edge of the blank of FIG. 1 is provided with a pair of flaps 27 and 28 and a pair of slotted flaps 2 9 and 30. The flaps 27 and 28 are scored adjacent their outer edges, as will be apparent when viewing FIG. 6.

With particular reference to FIGS. 2-5, the manner of erecting the carton bottom of the invention may be better understood. The two flaps 15 and 17 are first folded inwardly into abutting coplanar relationship, as shown in 'FIG. 3. The flaps 16 and 18 are then folded inwardly into overlying relationship 'with respect to the flaps v15 and 17 and by placing the thumbs, for example, one on the flap 1'6 and one on the flap 18, continued pressure will ttorce the flaps 16 and 118 and the flaps 15 and 17 downwardly until the outer portions 25 and '26 of the flaps 16 and 18 enter the openings formed by the slots 19-22, at which time pressure is released from the flaps 1-6 and 18 and the carton bottom automatically squares itself into the configuration shown in FIG. 5.

The folding of the top of the carton, i.e., closing of the flaps 27, 28, 29 and 30, is made after the contents have been placed within the carton, at which time the flaps 29 and 30 are first folded inwardly and the flaps 27 and 28, with their outer marginal scored areas, may then be inserted within the slots of the flaps 29 and 30 to form a complete, closed carton.

Thus it can be seen that the width W of the outer portions 25 and 26 of the flaps 16 and 18, in order to provide a closed bottom to the carton, must be sufiicient to substantially fill the space provided by the depth of the two slots 19 and 20 when the carton is folded. =In other words, the distance P; from the hinge to the end of the slot 20 and the distance P from the hinge to the end of the slot 21 added together with the width W ot the outer portion 25 of flap 16 should equal the width of the carton.

With respect to the trapezoidal-shaped portions 23 and 24 of the flaps 16 and 18, it is only necessary that the height X of the trapezoidal portion be as great as the width Y of the fiaps 15 and 17. This is apparent from the standpoint that the flaps 16 and 18 necessarily fold over and have their end portions extend beneath the center part of the flaps 15 and 17 when in erected position.

It can readily be seen that by this construction, applicant has provided an easily erected self-locking bottom construction for a carton in which it is not necessary to make the final squaring of the bottom from the inside, as is necessary in most presently constructed cartons of this type.

While the intermediate portions of the flaps 15 and 17 appear semi-circular in configuration, it should be readily recognized that other configurations for this portion of the flaps 15 and 17 may be used. The principal reason for the semicircular configuration is to permit the outer portions 25 and 26 ot the flaps 16 and 18 to easily enter the openings formed by the slots in the flaps 15 and 17, and upon release of the folding pressure or force, the flaps 16 and 18 will bear against the underneath of these portions of the flaps 15 and 17 quickly and easily causing the squaring of the bottom of the carton.

It should be pointed out that the particular carton bottom construction set forth above, uses no more board than a regular slotted container because there is no overlapping of opposed flaps.

While the foregoing description has been directed to a self-locking bottom construction for a tubular carton configuration, it should be pointed out that the particular flap closing and self-locking arrangement Olf the invention could be easily applicable to the top of a carton, particularly in those cartons which are, in effect, loaded through the bottom. F or example, in the boxing of fruit, such as apples, it is common practice to carefully place the top layer of the .fruit in the carton when the carton is upsidedo wn. This is termed facing the contents in the carton.

Various modifications may be resorted to Within the spirit and scope of the appended claims.

I claim:

'1. A carton having an integral, self-locking end closure comprisini four foldably connected side panels forming a tubular configuration, a first pair of flaps foldably con nected to the lower edge of opposed panels of said tubular configuration, said first pair of flaps each having a pair of spaced-apart slots formed in the free edge thereof, said slots continually increasing in width as they proceed from the ends thereof toward said free edge, said first pair of flaps adapted to be folded into coplanar relationship with the slots in one flap being in alignment with the slots in the other flap, a second pair of flaps foldably connected to the lower edge of the other opposed panels of said tubular configuration, said second pair of flaps having an outer portion thereof of approximately the same Width as the length of the slot formed by the closing of the first pair of flaps, said second flaps being folded into overlying relationship with said first pair of flaps and continued folding of said flaps forces the inward movement of said first flaps until the ends of said second flaps enter the corresponding slots in said first flaps and release of folding pressure on said second flaps permits the squaring of the flaps in interlocking relationship, and said outer portion of said second flaps extending through the slots formed by said first flaps.

2. A carton in accordance with claim 1 wherein the edge portion of each of said first pair of flaps between the spaced-apart slots therein is of semi-circular configuration.

3. A carton having an integrally, self-locking end closure comprising, four foldably connected side panels forming a tubular configuration, a first pair of flaps foldably connected to the lower edge of opposed panels of said tubular configuration, said first pair of flaps, each having a pair of spaced-apart slots for-med in the free edge thereof, said first pair of flaps adapted to be folded into coplanar relationship with the slots in one flap being in alignment with the slots in the other flap, a second pair of flaps folda'bly connected to the lower edge of the other opposed panels of said tubular configuration, said second pair of flaps having a centrally-located, rectangularlyshaped outer portion thereof of approximately the same width as the length of the slot formed by the closing of the first pair of flaps, the width of said outer portion being substantial and substantially less than the width of the lower edge of the side panel to which said flap is foldably connected, said second flaps being folded into overlying relationship with said first pair of flaps whereby continued folding of said second flaps forces the inward movement of said first flaps until the outer portions of said second flaps enter the corresponding slots in said first fiaps and release folding pressure of said second flaps permits the squaring of the flaps in interlocking relationship, said outer portions of said second flaps extending through the slots formed by said first flaps.

4. A carton in accordance with claim 3 wherein each of the slots in said first pair of flaps increases in width as it proceeds from the end thereof to the free edge of the flap.

5. A carton in accordance with claim 4 wherein the edge portion of each of said first pair of flaps between the spaced-apart slots therein is Olf semi-circular configuration.

References Cited by the Examiner UNITED STATES PATENTS 241,409 5/1881 Osborn. 2,030,295 2/1936 Hodge 22939 X 2,053,857 9/1936 -Weiss 22939 X 2,541,644 10/1948 Wood 22939 X 2,794,544 6/1957 Firth 22939 X 3,062,426 11/ 1962 Mason. 3,178,096 4/1965 Reeves et al. 229-39 JOSEPH R. LEC-LAIR, Primary Examiner.

D. T. MOORHEAD, Assistant Examiner.

Claims (1)

1. A CARTON HAVING AN INTEGRAL, SELF-LOCKING END CLOSURE COMPRISING, FOUR FOLDABLY CONNECTED SIDE PANELS FORMING A TUBULAR CONFIGURATION, A FIRST PAIR OF FLAPS FOLDABLY CONNECTED TO THE LOWER EDGE OF OPPOSED PANELS OF SAID TUBULAR CONFIGURATION, SAID FIRST PAIR OF FLAPS EACH HAVING A PAIR OF SPACED-APART SLOTS FORMED IN THE FREE EDGE THEREOF, SAID SLOTS CONTINUALLY INCREASING IN WIDTH AS THEY PROCEED FROM THE ENDS THEREOF TOWARD SAID FREE EDGE, SAID FIRST PAIR OF FLAPS ADAPTED TO BE FOLDED INTO COPLANAR RELATIONSHIP WITH THE SLOTS IN ONE FLAP BEING IN ALIGNMENT WITH THE SLOTS IN THE OTHER FLAP, A SECOND PAIR OF FLAPS FOLDABLY CONNECTED TO THE LOWER EDGE OF THE OTHER OPPOSED PANELS OF SAID TUBULAR CONFIGURATION, SAID SECOND PAIR OF FLAPS HAVING AN OUTER PORTION THEREOF OF APPROXIMATELY THE SAME WIDTH AS THE LENGTH OF THE SLOT FORMED BY THE CLOSING OF THE FIRST PAIR OF FLAPS, SAID SECOND FLAPS BEING FOLDED INTO OVERLYING RELATIONSHIP WITH SAID FIRST PAIR OF FLAPS AND CONTINUED FOLDING OF SAID FLAPS FORCES THE INWARD MOVEMENT OF SAID FIRST FLAPS UNTIL THE ENDS OF SAID SECOND FLAPS ENTER THE CORRESPONDING SLOTS IN SAID FIRST FLAPS AND RELEASE OF FOLDING PRESSURE ON SAID SECOND FLAPS PERMITS THE SQUARING OF THE FLAPS IN INTERLOCKING RELATIONSHIP, AND SAID OUTER PORTION OF SAID SECOND FLAPS EXTENDING THROUGH THE SLOTS FORMED BY SAID FIRST FLAPS.
US3272421A 1964-05-11 1964-05-11 Self-locking carton Expired - Lifetime US3272421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US3272421A US3272421A (en) 1964-05-11 1964-05-11 Self-locking carton

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3272421A US3272421A (en) 1964-05-11 1964-05-11 Self-locking carton

Publications (1)

Publication Number Publication Date
US3272421A true US3272421A (en) 1966-09-13

Family

ID=23443282

Family Applications (1)

Application Number Title Priority Date Filing Date
US3272421A Expired - Lifetime US3272421A (en) 1964-05-11 1964-05-11 Self-locking carton

Country Status (1)

Country Link
US (1) US3272421A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3371845A (en) * 1967-06-22 1968-03-05 Corning Glass Works Reclosable carton
US4013213A (en) * 1976-04-12 1977-03-22 Union Camp Corporation Postal tray
US4236662A (en) * 1979-04-09 1980-12-02 Champion International Corporation Container having an internal support platform and blank therefor
US4279378A (en) * 1979-11-19 1981-07-21 Willamette Industries, Inc. Top gap folding box having a top closure interlock
FR2567845A1 (en) * 1984-07-20 1986-01-24 Cables De Lyon Geoffroy Delore A method of closing a carton, the device for implementation of the method and cardboard obtained
US4953782A (en) * 1989-09-20 1990-09-04 Nekoosa Packaging Corporation Fresh produce shipping container with self-locking top
FR2712567A1 (en) * 1993-11-19 1995-05-24 Otor Sa locking with sheet material body of the cover and blank for producing such a crate.
US5769028A (en) * 1996-06-06 1998-06-23 Deckys; Jonas E. Pet carrier
US5893458A (en) * 1996-02-07 1999-04-13 Sisk; John One-piece cushioning container for cylindrical objects
US20050126934A1 (en) * 2002-06-25 2005-06-16 Gerhard Mock Receptacle for accommodating at least one pencil
US6990983B1 (en) * 2005-05-24 2006-01-31 Lyman Jr Hugh Marion Disposable foldable cup holder ashtray
US20140099158A1 (en) * 2011-06-09 2014-04-10 Creax Projects N.V. Local Connection of Sheets onto One Another, Method and Apparatus for the Implementation Thereof
US20150183574A1 (en) * 2007-05-14 2015-07-02 Embalajes Caspa, S.L. Wardrobe box

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US241409A (en) * 1881-05-10 osborn
US2030295A (en) * 1933-04-26 1936-02-11 Alfred R Hodge Container
US2053857A (en) * 1935-05-31 1936-09-08 Robert Gair Co Inc Knock-down interlocking carton closure
US2541644A (en) * 1948-12-15 1951-02-13 Wingfoot Corp Apparatus for vulcanizing pneumatic tires with radio-frequency current
US2794544A (en) * 1955-01-06 1957-06-04 Tee Pak Inc Package of artificial sausage casings
US3062426A (en) * 1959-01-26 1962-11-06 Mead Corp Reinforced carton
US3178096A (en) * 1964-06-22 1965-04-13 Inland Container Corp Self locking box

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US241409A (en) * 1881-05-10 osborn
US2030295A (en) * 1933-04-26 1936-02-11 Alfred R Hodge Container
US2053857A (en) * 1935-05-31 1936-09-08 Robert Gair Co Inc Knock-down interlocking carton closure
US2541644A (en) * 1948-12-15 1951-02-13 Wingfoot Corp Apparatus for vulcanizing pneumatic tires with radio-frequency current
US2794544A (en) * 1955-01-06 1957-06-04 Tee Pak Inc Package of artificial sausage casings
US3062426A (en) * 1959-01-26 1962-11-06 Mead Corp Reinforced carton
US3178096A (en) * 1964-06-22 1965-04-13 Inland Container Corp Self locking box

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3371845A (en) * 1967-06-22 1968-03-05 Corning Glass Works Reclosable carton
US4013213A (en) * 1976-04-12 1977-03-22 Union Camp Corporation Postal tray
US4236662A (en) * 1979-04-09 1980-12-02 Champion International Corporation Container having an internal support platform and blank therefor
US4279378A (en) * 1979-11-19 1981-07-21 Willamette Industries, Inc. Top gap folding box having a top closure interlock
FR2567845A1 (en) * 1984-07-20 1986-01-24 Cables De Lyon Geoffroy Delore A method of closing a carton, the device for implementation of the method and cardboard obtained
EP0169499A1 (en) * 1984-07-20 1986-01-29 LES CABLES DE LYON Société anonyme dite: Carton and device for closing it
US4953782A (en) * 1989-09-20 1990-09-04 Nekoosa Packaging Corporation Fresh produce shipping container with self-locking top
FR2712567A1 (en) * 1993-11-19 1995-05-24 Otor Sa locking with sheet material body of the cover and blank for producing such a crate.
WO1995013968A1 (en) * 1993-11-19 1995-05-26 Otor Crate made of sheet material and provided with a lockable lid, and blank for producing same
US5893458A (en) * 1996-02-07 1999-04-13 Sisk; John One-piece cushioning container for cylindrical objects
US5769028A (en) * 1996-06-06 1998-06-23 Deckys; Jonas E. Pet carrier
US20050126934A1 (en) * 2002-06-25 2005-06-16 Gerhard Mock Receptacle for accommodating at least one pencil
US7086527B2 (en) * 2002-06-25 2006-08-08 Schwan-Stabilo Schwanhausser Gmbh & Co. Kg Receptacle for accommodating at least one pencil
US6990983B1 (en) * 2005-05-24 2006-01-31 Lyman Jr Hugh Marion Disposable foldable cup holder ashtray
US20150183574A1 (en) * 2007-05-14 2015-07-02 Embalajes Caspa, S.L. Wardrobe box
US9340348B2 (en) * 2007-05-14 2016-05-17 Embalajes Capsa, S. L. Wardrobe box
US9718603B2 (en) 2007-05-14 2017-08-01 Embalajes Capsa, S.L. Wardrobe box
US20140099158A1 (en) * 2011-06-09 2014-04-10 Creax Projects N.V. Local Connection of Sheets onto One Another, Method and Apparatus for the Implementation Thereof
US9797424B2 (en) * 2011-06-09 2017-10-24 Creax Projects N.V. Local connection of sheets onto one another, method and apparatus for the implementation thereof

Similar Documents

Publication Publication Date Title
US3375967A (en) Container for frozen foods and the like
US3215330A (en) Containers
US3561667A (en) Composite container
US3174675A (en) Hexagonal cartons
US3206098A (en) End wall construction of folding boxes
US3343660A (en) Box closure
US3447672A (en) Bulging cartons
US3310223A (en) Recloseable tear strip carton having cover lock
US3194480A (en) Collapsible pack with recessed handle
US3310219A (en) Heavy duty container with integral handle
US4754914A (en) Package for wrapping food or other articles
US4096985A (en) Article carrier and blank therefor
US2868431A (en) Boxes
US2858969A (en) Multi-trip shipping container
US4058249A (en) Stacking tray
US4953779A (en) Reversible foldable container and closure therefor
US5979746A (en) Tray apparatus with reinforced corner structure
US4613045A (en) Bulk shipping container
US4267959A (en) Hinged paperboard container
US4373659A (en) Stackable carton with lid
US3893614A (en) Tamperproof reclosable carton
US3985232A (en) Carton and display panel
US3963121A (en) Carrier carton with display panel
US4760922A (en) Combination pallet and collapsible container mounted thereon
US3923234A (en) Double web corner carton