US2443428A - Carton - Google Patents

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Publication number
US2443428A
US2443428A US591695A US59169545A US2443428A US 2443428 A US2443428 A US 2443428A US 591695 A US591695 A US 591695A US 59169545 A US59169545 A US 59169545A US 2443428 A US2443428 A US 2443428A
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United States
Prior art keywords
flap
tab
flaps
tuck
hinged
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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
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US591695A
Inventor
Russell A Lambert
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BROOKS BANK NOTE Co
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BROOKS BANK NOTE Co
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Publication date
Application filed by BROOKS BANK NOTE Co filed Critical BROOKS BANK NOTE Co
Priority to US591695A priority Critical patent/US2443428A/en
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Publication of US2443428A publication Critical patent/US2443428A/en
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D5/00—Rigid 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
    • B65D5/02—Rigid 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
    • B65D5/10—Rigid 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
    • B65D5/103—Rigid 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 one of the self-locking flaps having a tongue engaging into an opening of an opposite flap
    • B65D5/106—Rigid 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 one of the self-locking flaps having a tongue engaging into an opening of an opposite flap the opening being a slot

Definitions

  • This invention relates to improvements in cartons and is directed more particularly to foldable cartons and flap locking means therefor.
  • the principal objects of the invention are directed to the provision of a carton and locking means for the closing flaps thereof.
  • Locking means for the flaps of prior art cartons are usually incapable of securely holding thefiaps in overlapping closing relation against pressure or weight applied against the flaps and said locking means are relatively dimcult to manipulate and consume time in closing the carton.
  • locking means is provided which is easily manipulated. rapid in operation and of such a nature as to provide secure locking of the flaps so that they may withstand great pressures and weights.
  • FIGS. 1. 2. 3 and 4 are perspective views of a carton showing the closing flaps and locking means in various relative positions; I
  • Fig. 5 is a plan view showing the inner flaps of the construction in overlapping relation
  • Fig. 6 is a sectional elevational view on the line 8-4 of Fig. 7 and through the flaps in overlapping locked relation;
  • Fig. 7 is a plan view showing the outer flaps in overlapping locked relation.
  • novel features of the invention are adapted for use in connection with cartons of various forms but in the form being described front, rear, and side walls 2, 4 and 6 are shown in set up relation.
  • Side or inner flaps I are hinged at II to opposite side walls t. These flaps have extensions ii. on their free edges as shown with saidextensions arranged in staggered relation.
  • Said flaps I are relatively swingable inwardly so that their ends may pass one another and when released the flaps swing upwardly so that the extension i2 of one flap underlies the other flap. In this way. the flaps are held in locked superposed relation against upward swinging movements, as shown in plan in Fig. 5. Swing- Company, Springfield. Massachusetts ing of the flaps inwardly as described is the first operation in closing the opening of the carton.
  • a rear or outer flap i4 is hinged to the rear wall I for swinging movements and is cut at It to form a tab it swingable at relative to an opening. Said tab it has a retaining lip 22 on its free edge.
  • the flap I4 is adapted to be positioned over the superposed inner flaps I and the tab it is swingable inwardly and downwardly relative thereof.
  • Another or front flap It is hinged at If to the front wall 1 and it has a tuck 32 hinged thereto at Ill for swinging movements.
  • the tuck 32 is insertable through the opening from which the tab it is formed and it may be scored at It to facilitate the comers of the tab being swingable.
  • the flap i4 is swung inwardly and over onto the flaps l. and finally the flap is swung inwardly onto the flap ll.
  • the tuck 32 is bent downwardly to press on the tab IO and extend through the opening forming said tab, and is then brought up'under the marginal edge of flap ll. That is. the truck 32 is doubled up under the marginal edge of the flap so as to lock said flaps l4 and 30 in superposed relation over the interlocked flaps I.
  • a carton comprising in combination, opposite and adjacent front and rear and end walls. a pair of inner flaps hinged to the up er edges of said end walls for swinging inwardly into overlapping relation, a front flapv and a rear flap hinged to the upper edges of said front and rear walls respectively for swinging inwardly into overlapping relation on said inner flaps and having outer free edges, said rear flaps provided with a longitudinal slit disposed inwardly from and parallel to its free edge terminating inwardly from opposite edges thereof and with other transverse slits extending from opposite ends of said slit towards the upper .edge of said rear wall and disposed in a diverging relation forming an opening and a tab having converging ends and hinged to said rear flap at an edge of the opening and adjacent and parallel to the upper edge of said rear wall, and a tuck extending from the free edge of said.
  • front flap having outwardly diverging opposite ends and being substantially the same size and shape as the tab of said rear flap whereby as said front flap overlies the rear fiap said tuck overlies the tab thereof.
  • said tuck being hinged to the free edge'of said front flap whereby with said front flap superposed on said rear flap said tuck may swing downwardly to swing the tab of said rear flap downwardly and pass through the opening of said rear flap and then swing rearwardly to underlie the outer portion of said rear flap adjacent its free edge.
  • a carton comprising in combination. opposite and adjacent front and rear and end walls, a pair of inner flaps hinged to the upper edges of said end'walls for swinging inwardly into overlapping relation, a front flap and a rear flap hinged to the upper edges of said front and rear walls respectively for swinging inwardly into overlapping relation on said inner flaps and having outer free edges, said rear flap provided with a longitudinal slit disposed inwardly from and parallel to its free edge terminating inwardly from opposite edges thereof and with other transverse from opposite ends of said slit towards the upper edge of said rear wall and disposed in a diverging relation forming an opening and a tab having converging ends and hinged to said rear flap at an edge of said opening and adjacent and parallel to the upper edge of said rear wall, and a tuck extending from the free edge of said front flap having outwardly diverging opposite ends and being substantially the same size and shape as the tab of said rear flap whereby as said front flap overlies said rear flap said tuck overlies the tab thereof, said t
  • a carton comprising in combination, opposite and adjacent front and rear and end walls, a pair of inner flaps hinged to the upper edges of said end walls for swinging inwardly into overlapping relation.
  • said rear flap provided with a longitudinal slit disposed inwardly from and parallel to its free edge terminating inwardly from opposite edges thereof and with other transverse slits extending from opposite ends of said slit towards the upper edge of said rear wall and disposed in a diverging relation forming an opening and a tab having converging ends and hinged to said rear flap at an edge of said opening and adjacent and parallel to the upper edge of said rear wall, and a tuck extending from the free edge of said front flap having outwardly diverging opposite ends and being substantially the same size and shape as the tab of said rear flap whereby as said front flap overlies said rear flap said tuck overlies the

Description

June 15, 1948, "R. A. LAMBERf 2,443,428
' cm'ron Filed ma 3, 1945 If If MM;
Patented June 15, 1948 2.44am caa'rou Russell A. Lambert, Springfield. Mala, alllgnor to Brooks Bank Note Mara, a corporation of Application May 3, 1945. Serial No. 581,695
3 Claims. (Cl. 229-49) This invention relates to improvements in cartons and is directed more particularly to foldable cartons and flap locking means therefor.
The principal objects of the invention are directed to the provision of a carton and locking means for the closing flaps thereof.
Locking means for the flaps of prior art cartons are usually incapable of securely holding thefiaps in overlapping closing relation against pressure or weight applied against the flaps and said locking means are relatively dimcult to manipulate and consume time in closing the carton.
According to this invention, locking means is provided which is easily manipulated. rapid in operation and of such a nature as to provide secure locking of the flaps so that they may withstand great pressures and weights.
With the foregoing and various other novel features and advantages and other objects of my invention as will become more apparent as the description proceeds, the invention consists in certain novel features of construction and in the combination and arrangement of parts as will be hereinafter more particularly pointed out in the claims hereunto annexed and more fully'described and referred to in connection with the accompanying drawings:
Figs. 1. 2. 3 and 4 are perspective views of a carton showing the closing flaps and locking means in various relative positions; I
Fig. 5 is a plan view showing the inner flaps of the construction in overlapping relation;
Fig. 6 is a sectional elevational view on the line 8-4 of Fig. 7 and through the flaps in overlapping locked relation; and
Fig. 7 is a plan view showing the outer flaps in overlapping locked relation.
Referring now to the drawings in detail, the invention will be more fully described.
The novel features of the invention are adapted for use in connection with cartons of various forms but in the form being described front, rear, and side walls 2, 4 and 6 are shown in set up relation. Side or inner flaps I are hinged at II to opposite side walls t. These flaps have extensions ii. on their free edges as shown with saidextensions arranged in staggered relation.
Said flaps I are relatively swingable inwardly so that their ends may pass one another and when released the flaps swing upwardly so that the extension i2 of one flap underlies the other flap. In this way. the flaps are held in locked superposed relation against upward swinging movements, as shown in plan in Fig. 5. Swing- Company, Springfield. Massachusetts ing of the flaps inwardly as described is the first operation in closing the opening of the carton.
A rear or outer flap i4 is hinged to the rear wall I for swinging movements and is cut at It to form a tab it swingable at relative to an opening. Said tab it has a retaining lip 22 on its free edge. The flap I4 is adapted to be positioned over the superposed inner flaps I and the tab it is swingable inwardly and downwardly relative thereof. I
Another or front flap It is hinged at If to the front wall 1 and it has a tuck 32 hinged thereto at Ill for swinging movements. The tuck 32 is insertable through the opening from which the tab it is formed and it may be scored at It to facilitate the comers of the tab being swingable.
In closing the carton. the side or inner flaps 8 are swung inwardly and downwardly as described and released to assume the locked position shown in Fig. 5.
Then the flap i4 is swung inwardly and over onto the flaps l. and finally the flap is swung inwardly onto the flap ll. Simultaneously the tuck 32 is bent downwardly to press on the tab IO and extend through the opening forming said tab, and is then brought up'under the marginal edge of flap ll. That is. the truck 32 is doubled up under the marginal edge of the flap so as to lock said flaps l4 and 30 in superposed relation over the interlocked flaps I.
As the'tuck 32 is passed through the opening for tab it said tab is 'moved downwardly and when the tuck is released said tab it moves up wardly so that its lip 22 underlies the tuck 12 thus acting as a retainer to hold said tuck in doubled-under relation, as shown in Fig. 6.
The side flaps 8 being interlocked as they are and the flaps I4 and being locked with the tab II and lip 22 holding them in locked relation the carton is securely closed and the flaps are not likely to be accidentally displaced or unlocked. 4
The features of the invention are adapted for broad application and may be used for closing the bottom end or top of a carton or container and serve adequately to resist opening against slits extending purview and range of equivalency of the appended claims are therefore intended to be embraced therein.
What it is desired to claim and secure by Letters Patent of the United States is:
1. A carton comprising in combination, opposite and adjacent front and rear and end walls. a pair of inner flaps hinged to the up er edges of said end walls for swinging inwardly into overlapping relation, a front flapv and a rear flap hinged to the upper edges of said front and rear walls respectively for swinging inwardly into overlapping relation on said inner flaps and having outer free edges, said rear flaps provided with a longitudinal slit disposed inwardly from and parallel to its free edge terminating inwardly from opposite edges thereof and with other transverse slits extending from opposite ends of said slit towards the upper .edge of said rear wall and disposed in a diverging relation forming an opening and a tab having converging ends and hinged to said rear flap at an edge of the opening and adjacent and parallel to the upper edge of said rear wall, and a tuck extending from the free edge of said. front flap having outwardly diverging opposite ends and being substantially the same size and shape as the tab of said rear flap whereby as said front flap overlies the rear fiap said tuck overlies the tab thereof. said tuck being hinged to the free edge'of said front flap whereby with said front flap superposed on said rear flap said tuck may swing downwardly to swing the tab of said rear flap downwardly and pass through the opening of said rear flap and then swing rearwardly to underlie the outer portion of said rear flap adjacent its free edge.
2. A carton comprising in combination. opposite and adjacent front and rear and end walls, a pair of inner flaps hinged to the upper edges of said end'walls for swinging inwardly into overlapping relation, a front flap and a rear flap hinged to the upper edges of said front and rear walls respectively for swinging inwardly into overlapping relation on said inner flaps and having outer free edges, said rear flap provided with a longitudinal slit disposed inwardly from and parallel to its free edge terminating inwardly from opposite edges thereof and with other transverse from opposite ends of said slit towards the upper edge of said rear wall and disposed in a diverging relation forming an opening and a tab having converging ends and hinged to said rear flap at an edge of said opening and adjacent and parallel to the upper edge of said rear wall, and a tuck extending from the free edge of said front flap having outwardly diverging opposite ends and being substantially the same size and shape as the tab of said rear flap whereby as said front flap overlies said rear flap said tuck overlies the tab thereof, said tuck being hinged to the free edge of said front flap whereby with said front flap superposed on said rear flap said tuck may swing downwardly to swing the tab of said rear flap downwardly and pass through the opening of said rear flap and then swing rearwardly tounderlie the outer portion ofsaid rear flap adjacent its free edge, the longitudinal slit of said rear flap formed intermediate its ends to provide a projecting retaining lip on the outer free edge of the tab which is adapted to underlie and hold the said tuck as it underlies the outer portion of said rear flap.
3. A carton comprising in combination, opposite and adjacent front and rear and end walls, a pair of inner flaps hinged to the upper edges of said end walls for swinging inwardly into overlapping relation. a front flap and a rear flap hinged to the upper edges of said front and rear walls respectively for swinging inwardly into overlapping relation on said inner flaps and having outer free edges, said rear flap provided with a longitudinal slit disposed inwardly from and parallel to its free edge terminating inwardly from opposite edges thereof and with other transverse slits extending from opposite ends of said slit towards the upper edge of said rear wall and disposed in a diverging relation forming an opening and a tab having converging ends and hinged to said rear flap at an edge of said opening and adjacent and parallel to the upper edge of said rear wall, and a tuck extending from the free edge of said front flap having outwardly diverging opposite ends and being substantially the same size and shape as the tab of said rear flap whereby as said front flap overlies said rear flap said tuck overlies the tab thereof, said tuck being hinged to the free edge of said front flap whereby with said front flap superposed on said rear flap said tuck may swing downwardly to swing the tab of said rear fiap downwardly and pass through the opening of said rear flap and then swing rearwardly to underlie the outer portion of said rear flap adjacent its free edge, the longitudinal slit of said rear flap formed intermediate its ends to provide a projecting retaining lip on theouter free edge of the tab which is adapted to underlie and hold said tuck as it underlies the outer portion of said rear flap, and said tuck provided with score lines extending diagonally across outer opposite ends thereof providing relatively swingable corners for said tuck to facilitate passtzge of said tuck through the opening in said rear RUSSELL A. LAMBERT.
REFERENCES CITED The following references are of record in the DEsposito May 23, 1944
US591695A 1945-05-03 1945-05-03 Carton Expired - Lifetime US2443428A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2663491A (en) * 1950-01-16 1953-12-22 Lawrence Paper Co Case
US2666566A (en) * 1948-10-14 1954-01-19 Ersel C Mulnix Carton
US20130277249A1 (en) * 2010-11-05 2013-10-24 British American Tobacco (Investments) Limited Pack for Smoking Articles
US20180127197A1 (en) * 2016-01-19 2018-05-10 David Paul Goodrich Slit Paper Expansion Method and Apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1869742A (en) * 1930-10-17 1932-08-02 Louis L Edmunds Carton
US1941514A (en) * 1932-03-23 1934-01-02 Sutherland Paper Co Box
US2349707A (en) * 1942-09-19 1944-05-23 Container Corp Container lock

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1869742A (en) * 1930-10-17 1932-08-02 Louis L Edmunds Carton
US1941514A (en) * 1932-03-23 1934-01-02 Sutherland Paper Co Box
US2349707A (en) * 1942-09-19 1944-05-23 Container Corp Container lock

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2666566A (en) * 1948-10-14 1954-01-19 Ersel C Mulnix Carton
US2663491A (en) * 1950-01-16 1953-12-22 Lawrence Paper Co Case
US20130277249A1 (en) * 2010-11-05 2013-10-24 British American Tobacco (Investments) Limited Pack for Smoking Articles
US9340347B2 (en) * 2010-11-05 2016-05-17 British American Tobacco (Investments) Limited Pack for smoking articles
US20180127197A1 (en) * 2016-01-19 2018-05-10 David Paul Goodrich Slit Paper Expansion Method and Apparatus
US11220395B2 (en) * 2016-01-19 2022-01-11 David Paul Goodrich Slit paper expansion method and apparatus

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