US2143308A

US2143308A - Folded box

Info

Publication number: US2143308A
Application number: US13543A
Authority: US
Inventors: Flach Paul
Original assignee: Individual
Current assignee: Individual
Priority date: 1934-03-29
Filing date: 1935-03-28
Publication date: 1939-01-10
Anticipated expiration: 1956-01-10
Also published as: GB445393A

Description

Jan. 10, 1939. P. FLACH 2,143,308

FOLDED BOX Jan. 10, 1939. P, FLACH 2,143,308

FOLDED BOX Filed March 28, 1935 5 Sheets-Sheet 2 Jan. 10, 1939. FLACH 2,143,308

FOLDED BOX.

Filed March 28, 1935 5 Sheets-Sheet 3 Jan. l0, 1939. pI FLACH 2,143,308

FOLDED BOX Filed March 28, 1935 5 Sheets-Shea*l 4 Pwr Jan. 10, 1939. p, FLACH 2,143,308

FOLDED BOX Filed March 28. 1935 5 Sheets-Sheet 5 Jn v6 n a r:

mensaje@ 1o, 1939 l y l 2,143,308

UNITED STATES PATENT OFFICE 2443,90? FOLDED BOX Paul Flach, Dhemnltl, Germany application mmh sa, 193s. serial No. 13,54:

` In Germany March 29, 1934 21 oisans. (ol. zza-s4) 1 This invention relates to folded boxes, -and on to the part I in the manner shown on the more particularly to those in which the cover right-hand side of the drawing, these recesses and bottom part are each made-from a separate take on the shape of a quarter of a circle, and cut-out or blank in such a manner that the side in the box when folded together serve for receivwalls of which two opposite ones are provided at ing the locking tongues 8 which are provided on the ends with extensions for folding in, can be the narrow sides of the

end wall tabs

9, 9 atconneoted together by means of tabs provided on tached to the

parts

2, 2 by folding lines 9a or 9b the other opposite side walls or end walls. The in such a manner that their free straight edges. invention relates to the particular method of lie in the extension of the folding lines Illa, lub

l locking the tabs with the side walls of the box connecting the tabs 9 with the adjoining strips l0 member which do not belong thereto. This locklll. The form of the tongues B corresponds to ing is effected by locking tongues provided on the that of the recees 'L tabs being introduced into corresponding cuts or The blank is folded together in the following recesses in the side walls. Apart from the semanner. First the flaps 6 are folded down on to l curity which this locking offers the -loosthe paris'l, as shown in the right-hand part of l5 ening.r of the box member on account of the par-l the drawing, and stuck down. Then the parts 4 ticular method of making the recesses for the are folded downon to the side walls 3 and stuck 'locking tongues, the further advantage is cbth'ereto (Fig. 2a). The side walls 3 are then tained of an extraordinary strengthening of the raised, and care is taken that their extensions 5 2o corners of the box member and a high stability turn inwards, which requires these extensions to 2o thereof. be turned at right-angles. 'Then the end walls In the drawings a nlmiber of constructional 2, 2 are raised and their tabs 9 are folded inexamples of the invention are illustrated by way wards over the

extensions

5, 5 so that the strips of example in the form of blanks for making the I0, i0 come to lie on the middle part I and are boxes according to the invention, laid out flat. folded at right-angles. As soon as the lines Illa 25 Fig. l shows a folding box blank according to and, ib have reached the

lines

2a, 2b the locking the invention partly laid out dat. Hg. 2shows a tongues 8 come opposite to the" recesses l and modied form in a. similar manner. Fig. 2a spring into these recesses on account of the shows this construction `with the box partly elasticity of the card material, whereby locking 3o folded together. Fig. 3 shows a third modificais eifected. Automatic releasing of the locking is 30 tion, partly laid out fiat, and Fig. 4Ashows in a impossible owing to the resilience of the material similar manner a fourth modification, only a part which holds the tongues 8 in the recesses 1. of the blank being shown. Fig. 4a shows in per- At the four corners of the box memberthere spective vthe blank according to Fig. 4 partly are three layers of card superposed. This gives a folded into a boxt l -considerable reinforcement for the corners, which 35 In all constructions] forms the blank has a are especially sensitive to being pushed in and middle or main part I, which-forms, for example, other stresses; moreover, on account of the the bottom of the box member. Adjoining the doubled layer of material adjoining the recess 1, middle or main'part and connected theretgalong the locking tongu 8 are caused to hold securely 40 folding-

lines

2a, 2b and 3a, 3b respectively are in the recesses 1. The connection of the flaps 6 40 the end parts or walls'2, 2 andthe sid'e parts or with the parts I, and of these parts with the

parts walls

3, 3, which later will form the sides of the 3. can 0i' COIII'SB, be elected Otherwise than by box member. At the long edges of the

parts

3, 3 means of an adhesive, for example by stapling are attached side wan tabs 4. a of somewhat. les or stitching. In the same manner as described breadth, and at the narrow sides the terminal exf both the bottom Vpart and cover part can be made 45

tensions

5, 5 are attached.. At the narrow sides for boxes with lids. The new arrangement, howof the parts 4 there are hinged'aps 6, which are ever. can naturally be used for folded boxes of shown on the left-hand side of the drawings fiat, other kinds, All this applies also to the forms but on the right-hand side folded over on to the shown in Figs. 2-4. 5o Dart-s4. Fbrfurtherincreasingthesecurityofthelock-m symmetrically to the lines Ga-and 6b connecting. in the form illustrated in Fig. 2, the recesses lng the naps 6 wit-h the part 4, in the construcfor receiving the locking tongues are cut away tional form according to lug. 1, semicircular reunderneath, in s `ch a ma'nner that the recess in cesses 1 open 'on the outside are provided in the the flap lwhich comes to lie on the inside when Y u parts l and l. when the ps 6 folded over Y the box'is folded together, overlaps the edge of the recess of the tongue, which produces a doubled depth of the rest, forming a kind of fold so that the locking tonguescan enter behind the overlapping edges in the locking position.

As shown in Fig. 2 the construction of the blank is fundamentally the same as in the previously described construction; it differs essentially only in that the recesses 1 do not lie exactly symmetrical with respect to the lines 6b as the part la in the flap 6 is somewhat greater than the part 1b in the tab 4, so that when the flap B is folded over the part 4, as shown on the right-hand side on the drawing, the edges of the recesses 1a, as shown on the left-hand side above by the broken line, are set back behind the edges of the recesses 1b, and when the part l is foldedinwardly over the part 3, the edges of the recesses 1b, with the edges of the recesses 1a, will form under-cut folds in which the locking tongues 8 can slide when the box is folded together. 'Ihe locking tongues can then not readily come out of their places, as they are held by the projecting edges of the recesses 1b. The size of the locking tongues 8 corresponds preferably with that of the recesses 1a.

In the constructional form according to Fig. 3 the construction of the blank as regards the parts I-Ill is substantially the same asin Fig. 2. There are, however, further or secondary flaps II hinged on to the primary flaps 6 at I la, which are provided with recesses I2 in the form of a quarter circle. The recesses I2 and la lie symmetrically with respect to the folding lines IIa.

The blank is prepared as follows. First of all the flaps II together with the flaps B are folded about the line 6b over on the parts 4. The flaps II are then folded in a reverse direction about the line IIa, leaving a part of flap Il projecting parallel to terminal extensions 5 and beyond the part l. This procedure may of course be reversed by rst folding part II backward on line IIa and then folding flaps 6 and II along the line Bb. The result in both cases is shown on the right-hand side of Fig. 3. In this position the parts are gummed or otherwise fastened together. I'he blank is then ready for dispatch. The folding together to form the box is effected as in the previous cases by the side parts 3 rst being raised with the superposed extensions 5 and II turned inwards at rightangles after which the end walls 2 are raised and the tabs 9 are folded inwards so that the locking tongues il engage in the places formed by the recesses 1a, 1b and I2 and the strips I0 then lle on the bottom of the box.'

By the construction of the blank according to Fig. 3 the security ofthe locking of the locking tongues is further increased because the edges of the place for the locking tongues consists of three layers of material; in addition, since the side walls of the box near to the corners have four layers of material a further reinforcement is obtained of the corners of the box, which are specially sensitive to mechanical strain.

The construction according to Fig. 4 in which, for the sake of simplicity, only' a part of the blank is shown, differs from those described above essentially in that the recesses I2 in the flaps II lie symmetrically with the recesses 1b of the parts 4 with respect to the folding lines IIa between the flaps II and 6 in such a manner that when the flaps II are folded over the flaps G and over the parts I, the recesses I2 and 1b coincide. In this case also the recesses 1b are made somewhat smaller than the recesses I2, in Order t0 form under-cut edges. Furthermore, another folding line I2b is provided in the extension of the edge I2a of the recess I2, which, when the ap il is folded over about the line IIa, as illustrated on the right-hand side of Fig. 4, coincides with the line 6b between the flap Ii and the part 4. The inner parts of ap II will then coincide with flaps 6. These coinciding parts will thus extend beyond parts 4, and parallel to terminal extensions 5 as shown on the righthand of Fig. 4. These coinciding parts may then be turned inwards together with extensions 5 when the side walls 3 are raised. The aps II are again gummed or otherwise secured to the parts I which are also secured to the parts.3. The folding of the box from the blank thus formed is effected in the manner described above. In this way there is obtained near to the corners of the box a three-fold thickness of material for the longitudinal walls, a five-fold thickness for the narrow side or end walls and a corresponding reinforcement of the corners of the box. The edges of the places for the locking tongues 8 also have two layers of material.

As a particular advantage for all the constructions described it may be mentioned that the new construction of the locking parts, on account of the great security of the locking obtained thereby, makes possible a very rapid and convenient working in folding together the blanks, which is of great importance as re gards manufacturing costs, since it is mainly a question of hand work.

Where in the above description, as well as in the claims, a folding box is mentioned this must be taken to include not only a complete folding box consisting of a lower part and a cover part, but also the lower part or the cover part alone. The construction is claimed also not only for the completely folded box or box members, but also for the blank, whether completely spread out or in a set, in which. as shown in the right-hand side of the drawings, individual parts of the blank are secured by adhesive or stapling.

I claim:

l. A folding box blank comprising a main part, two opposite side walls, two opposite end walls, each of said end walls having an end wall tab, an extension on each end of each of said side walls, a side wall tab on each of said side walls and a flap on each end of each of said side wall tabs, said flaps bent down on to their respective side wall tabs and attached thereto.

2. A folding box blank comprising a main part, two opposite side walls, two opposite end walls, each of said end walls having an end wall tab, an extension on each end of each of said side walls. a side wall tab on each of said side walls, a flap on each end of each of said side wall tabs. a recess at each end of each of said side wall tabs, a recess in each of said flaps adapted when the flaps are folded down to coincide substantially with the side wall tab recess, 'and a locking tongue on each end of each of said end wall tabs adapted when the box is folded together to engage one of said side wall tab recesses.

3. A folding box blank comprising a main part, two opposite side walls, two opposite end walls, each of, said end walls having an end wall tab. an extension on each end of each of said side walls, a side wall tab on each of said side walls, a iiap on each end of each of said side wall tabs, a recess at each end of each of said side wall tabs, a recess in each of said flaps adjacent to one of the side wall tab recesses and adapted subauasoa stantially to coincide with the side wall tab recess when the flap is folded down and a locking tongue on each end of each of said end wall tabs adapted when the box is folded together to engageone of said side wall tab recesses.

4. A folding box blank comprising a main part, two opposite side walls, two opposite end walls, each oi said end walls having an end wall tab, an extension on each end of each of said side walls. a side wall tab on each of said side walls, a flap on each end of eachV of said side wall tabs, a recess at each end of each of said side wall tabs, a recess in each of said flaps adapted substantially to coincide with the side wall tab recess when the flaps are folded down. said flap recesses being of larger size than their respective side wall tab recesses, and a locking tongue on each end of each of said end wall tabs adapted when the box is folded together to engage one of said side wall tab recesses.

5. A folding box blank comprising a main part, two opposite side walls, two opposite end walls, each of said end walls having an end wall tab, an extension on each end of each of said side walls. a side wall tab on each of said side walls, a flap on each end of each of said side wall tabs, a recess at each end of said side wall tabs, a recess in each -of said flaps being of larger size than its respective side wall tab recess and adapted substantially to coincide with the side wall tab recess when the flapsare folded down, and a locking tongue on each end of each of said end wall tabs adapted when the box is folded together to engage one of said side wall tab recesses.

6. A folding box blank comprising a main part, two opposite side walls, two opposite ends walls, each of said end walls having an end wall tab, an extension on each end of each of said side walls, a side wall tab on each of said slde walls, a flap on each end of each of said side wall tabs, a recess at each end of each of said side wall tabs, a recess in each of said flaps of larger size than the respective side wall tab recess and adapted substantially to coincide with the side wall tab recess when the respective iiaps are folded down, and a locking tongue on each end of each of said end wall tabs adapted when the box is folded together to engage one of said side wall recesses, each of said aps being folded down on to its respective side wall tab and secured thereto.

7. A folding box blank comprising a main part, two opposite side walls, two opposite end walls, each of said end walls having an end wall tab, an extension on each end of each of said side walls, a side wall tab on each of said side walls, a flap on each end of each of said side wall tabs, a recess at each end of each of said side wall tabs, a recess in each of said flaps. being of larger size than its respective side wall tab recess and adapted substantially to coincide with the respective side wall tab recess when the respective flaps are folded down, and a locking tongue on each end of each of said end wall tabs adapted when the box is folded together to engage one of said side wall tab recesses, each of said flaps being folded down on to its respective side wall tab and secured thereto, and each of lsaid side wall tabs being folded down on to its respective side wall and secured thereto.

8. A folding box blank comprising a main part, two opposite side walls, two opposite end walls, each of said end walls having an end wall tab, an extension on `each end of each of said side walls,asidewalltaboneachofsaidside walls, a flap on each end of each of said side wall tabs, a recess at each end of each of said side wall tabs, a recess in each of said flaps, being of larger sizethan its respective side wall tab recess and adapted substantially to coincide with the respective side wall tab recess when the respective flaps are folded down, and a locking tongue on each end of each of said end wall tabs adapted when the box ls folded together to engage one of said side wall tab recesses. each of said aps being folded down on to its respective side wall tab and secured thereto by sticking, and each of said side wall tabs being folded down on to its respective side wall and secured thereto by sticking.

9. A folding box comprising a main part, two opposite side walls, two opposite end walls, each of said end Vwalls having an end wall tab, an extension on each end of each of said side walls, a side wall tab on each of said side walls, a flap on each end of each of said side wall tabs, saidflaps bent down on to'their respective side wall tabs, and locking means to maintain said side walls and said end walls in an upwardly bent and assembled relation after the side wall tabs have been folded down to their respective side walls and the extensions have been turned inwards at right-angles.

l0. A folded box comprising a main part, two opposite side walls, two opposite end walls, each of said end walls having an end wall tab, an extension on each end of each of said side walls, a side wall tab on each of said side walls, a ilap on each end of each of said side wall tabs. a recess at each end of each of said side wall tabs, a recess in each of said flaps adapted substantially to coincide with the respective side wall tab recess when the respective flaps are folded down, anda locking tongue on each end of each of said end wall tabs, each of said locking tongues adapted when the box is folded together to engage one of said side wall tab recesses.

1l. A folding box comprising a main part, two opposite side walls, two opposite end walls, each of said end walls having an end wall tab, an extension on each end of each of said side walls, a side wall tab on each of said side walls, a flap on each end of each of said side wall tabs, a recess at each end of each of said side wall tabs, a recess in each of said flaps adapted substantially to coincide with the respective side wall tab recess when the respective flaps are folded down, and a locking tongue on each end of each of said end wall tabs, each of said locking tongues adapted when the box ls folded together to engage one of said side wall tab recesses and one of said'ap recesses.

12. A folding box comprising a main part, two opposite side walls, two opposite end walls, each of said end walls having an end wall tab. an extension on each end of each of said side walls. a side wall tab on each of said side walls, a iiap on each end of each of said side wall tabs, a recess at each end of each of said side wall tabs, a recess in each of said flaps adapted substantially to coincide with the respective side wall tab recess when the respective flaps are folded down, said flap recesses being of larger size than said side wall tab recesses, and a locking tongue on each end of each of said end wall tabs, each of said locking tongues adapted when the box is folded togetherto engage one of said recesses.

13. A folding box comprising a main part, two opposite side walls, two opposite end walls, each of said end walls having an end wall tab, an extension on each end of each of said side walls. a side wall tab on each of said side walls. a flap on each end of each of said side wall tabs, a recess at each end of each of said side wall tabs, a recess in each of said flaps adapted substantially to coincide with the respective side wall tab recess when the respective flaps are folded down, said nap recesses being of larger size than said wall tab recesses, and a locking tongue on each end of each of said end`wall tabs adapted when the box is folded together to engage one of said side wall tab recesses, each of said flaps being folded down on to its respective side wall tab and secured thereto by sticking, and each of said side wall tabs being folded down on to its respective side wall and secured thereto by sticking.

14. A folding box blank comprising a main part, two opposite side walls, two opposite end walls, each of said end walls having an end wall tab, an extension on each end of each of said side walls, a side wall tab on each of said side walls, a flap on each end of each of said side wall tabs, said flaps being bent down on to their respective side wall tabs, and a secondary nap hinged to each of said flaps.

15. A folding box comprising a main part, two opposite side walls, two opposite end walls. each of said end walls having an end wall tab, an extension on each end of each of said side walls, a side wall tab on each of said side walls. a flap on each end of each ofsaid side wall tabs. a secondaryfiiap hinged to each of said first-named flaps and being bent down on to it for reinforcement, and locking elements adapted to maintain said side walls and said end wallsin an upwardly bent and assembled relation after the side wall tabs have been folded down on to the side walls and secured thereto by sticking.

16. A folding box blank comprising a main part, two opposite side walls, two opposite end walls, each of said end walls having an end wall tab, an extension on each end of each of said side walls, a side wall tab on each of said side walls, a flap on each end of each of said side wall tabs, saidV aps being bent down on to their respective side wall tabs, a secondary flap hinged to each of said flaps, a recess in each end of said side wall tabs, a further recess in each of said secondary flaps, said further recesses adapted to coincide with the corresponding recesses of said side wall tabs on said secondary flaps being folded down to said naps, and a locking tongue on each end of each of said end wall tabs.

17. A folding box blank comprisingv a main part, two opposite side walls, two opposite end walls, each of said end walls having an end wall tab, an extension on each end of each of said side walls, a side wall tab on each of said side walls, a flap on each end of each of said sidewall tabs, a secondary flap hinged to each of said flaps in a score line, a recess on each end of each of said side wall tabs, a further recess in each of said secondary aps, said recesses and said further recesses being disposed substantially symmetrically to the score lines connecting said iaps'and said secondary flaps, and a locking tongue on each end of each of said end wall tabs adapted when the box is folded together to engage 'one of said recesses.

18. A folding box blank comprising a main part. two opposite side walls, two opposite end walls, each ofvsaid end walls havinilr an end wall tab, an extension on each end of each of said auasos side walls. a side wall tab on each of said side walls, a flap on each end of each of said side wall tabs. said flaps bent down on to their respective side wall tabs, a secondary flap hinged to each of said aps in a score line, a recess on each end of each of said side wall tabs, a further recess in each of said secondary flaps, said re cesses and said further recess being disposed substantially symmetrically to the score lines connecting said flaps and said secondary flaps, and a locking tongue on each end of each of said end wall tabs adapted when the box is folded together to engage one of said ilrst mentioned recesses, each of said secondary flaps being folded down on to its adjacent nap so that each of said side wall tab recesses will substantially coincide with its corresponding further recess, `said side wall tabs together with their secondary flaps being stuck on to their adjacent side walls.

19. A folding box blank comprising a main part, two opposite side walls, two opposite end walls, each of said end walls having an end wall tab, an extension on each end of l each of said side walls, a side wall tab on each of said side wallsl a flap on each end of each of said side wall tabs, said flaps bent down on to their respective side wall tabs, a secondary nap hinged to each of said flaps in a score line, a recess on each end of each of said side wall tabs, a further recess in each of said flaps, a tertiary recess in each of said secondary flaps, each of said further recesses and each of said tertiary recesses being disposed substantially symmetrically to the score lines connecting the respective flap to its adjacent secondary flap, and a tongue on each end of each of said end wall tabs adapted to engage one of said recesses on the blank being folded together to set up the folding box.

20. A folding box blank comprising a main part, two opposite side walls, two opposite end walls, each of said end'walls having an end wall tab, an extension on each end of each of said side walls, a side wall tab on each of said side walls, a ap on each end of each of said side wall tabs, said flaps bent down on to their respective side wall tabs, a secondary flap hinged to each of said aps in a score line, a recess on each end of each of said side wall tabs, a further recess in each of said naps, a tertiary recess in each of said secondary iiaps, each of said further recesses and each of said tertiary recesses being of larger size than said side wall tab recesses and being disposed substantially symmetrically to the score line connecting the respective nap to its adjacent secondary iiap, and a tongue on each end of each of said end wall tabs adapted to engage one of said recesses on the blank being folded together to set up the folding box.

2l. A folding box blank comprising a main part. two opposite side walls, two opposite end walls, each of said end walls having an end wall tab, an extension on each end of each of said side walls, a side wall tab on each of said side walls, a flap on each end of each of said side wall tabs, and a secondary flap hinged to each of said flaps, said secondary flaps being folded down on to said flaps about the score lines connecting them to their respective flaps, said naps together with their secondary aps being folded down on to their adjacent side wall tabs, and said side wall tabs being together with their respective naps and secondary naps folded down on to the adjacent side walls and stuck thereto.

. PAUL FLACH.