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Патент USA US2404916

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July 30,1946.
-
11R, B MELLER
_
2,404,916
BOX
_ Filed Oct. 24, 1944
2 sheetsrshelet 2
99/
INVENTOR.
REGINALD 5. MELLER
BY
ATTORNEY
2,404,916
Patented July 30, 1946
UNITED STATES PATENT ‘OFFICE.’
2,404,916‘
BOX
Reginald B. 'Meller, Oakland, Calif.
Application October 24, 1944, Serial No. 560,111 ’
3 Claims.
(Cl. 229—-35)
2
1
for a box blank indicated generally at 5 and of
substantially rectangular form. The blank is
scored as at lb, 2%) and 3G, to de?ne and provide
439,895, ?led April 21, 1942, now Patent No. 2,366,
a bottom section ‘i, side wall sections 9 and end
419 of January 2, 1945. The box to which the in
wall sections H. Preferably score lines it) and
vention of my patent and this application relate is
25?, extending longitudinally of the blank are off
one which can be completed from a blank without
set slightly to facilitate conversion of the blank
the use of adhesive to hold any of the corner com
into an assembled box, as will presently appear.
ponents, the ?nal box being one having substan
Extending from each end of an end wall section
tial rigidity throughout and devoid of looseness
10 I i
preferably integral therewith is a wing
or play at the corners.
!3. If the box is made of rectangular form in
In forming the box of my original invention,
general outline, free edge l5 of wing l3 and free
the blanks were cut with di es from a sheet of paper
edge ll of the adjacent side wall section 9 will
or other suitable material. For example, in one
be in alignment
operation a substantially continuous sheet was
Each side wall section t, in proximity to each
fed to a rotary cutter cylinder carrying several
end thereof, is provided with a cut it into its
dies spaced about its periphery. In this manner,
This invention relates to an improvement upon
the box disclosed in my application Serial No.
the blanks were cut continuously as the sheet ad
free longitudinal edge.‘ This cut is generally in
vanced through the machine. Successive blanks
a direction transverse to a circle 2i having its
center at the nearest corner 23 of the bottom
were not contiguous to one another and a small
strip of waste material remained to be removed
by hand from between the successive blanks. In
accordance with the present invention, I provide
a blank which can be formed from a substantially
continuous strip and in which the successive
blanks are contiguous to one another.
This en
ables any waste of material to be eliminated. In
addition, the spoilage of blanks which frequently
occurred during the waste stripping operation
entirely obviated, as is the stripping operation
section 1. In the preferred embodiment, cut 19
will occupy a position in which the cut is between
one in which the cut provides a continuation of
a radius of the circle 23 and a second position
in which the cut is parallel to cut 45 which sep
arates the wing it from the adjacent side Wall 9.
This phase of the invention will be discussed pres
ently in detail in connection with Figure ll. The
cut is generally continued to the edge I? of the
side wall by cut its, at a right angle to the side
'
itself. Further, the blank of this invention is so 30 wall.
Each end wall wing E3 is provided with a cut
fashioned that the box can be assembled either
2?, transverse to the circle 2|, its direction being
by hand or by machine more rapidly, with greater
preferably at 90° to the direction of the cut IS in
ease. Finally, the assembled box possesses im
proved rigidity and stress resistance.
Other objects and features of advantage will
the adjacent sidewall section 5; if cuts 2'! and
ii! are extended, they will intersect at right angles
become further apparent upon a consideration
of the following wherein I have further discussed
to one another.
the practice of the invention.
In the drawings accompanying and forming
a part hereof, Figure 1 is a diagrammatic repre
sentation of the formation of the blanks in ac
cordance with the present invention.
Figure 2 is an outside View in perspective of a
corner of my improved box.
'
'
Cuts l9 and 21 terminate on the circle 2!. In
accordance with the present invention, a third
cut 29 is formed in the wings it along circle 2!},
this cut continuiniT to cut 48 to provide an extend
ing tongue 45. Cut 29 is preferably made along
the arc of circle 2| for if it is made within or with
out the arc to any material extent, the corner can
be assembled but it is necessary to flex the several
Figure 3 is an inside view in perspective of the 45 associated parts to permit the tab £55 to thread
through out l5.
same corner.
Figure 4 is an enlarged view of one corner of
the box of the present invention illustrating cer
tain variations which are permissible in the prac
tice of the present invention.
Figure 5 is a side elevation showing the manu
Referring now to Figure 1, the blanks are con
veniently cut in a continuous manner with dies
from a long sheet of suitable paper or board, the
50 several blanks following each other successively,
cuts 5| serving to sever and so separate one blank
from a succeeding blank. This method of man
facture of a box including several of the corner
ufacture is inherent in the blank 0f the present
invention. Its advantage will be further ap
55 parent upon reference to Figure l of my afore
proved box is formed.
mentioned patent and to the box blank there
Figure 7 is an enlarged view of one corner of the
shown. This was manufactured by cutting suc
box of the present invention illustrating certain
cessive blanks from a continuous sheet, successive
variations which are permissible in the practice
blanks being separated from one another by a
of the present invention.
narrow separator strip of the sheet‘ which was
In its preferred form, my invention provides
constructions embodying the present invention.
Figure 6 is a view of a blank from which my im
2,404,916
3
4
stripped off and wasted. When this was done,
‘E. In the structure shown herein in Figure 3, tab
the blanks were placed in a pile and the un
wanted material between tabs 25 and 33 was re
moved by striking between tabs 25 and 33 with
a hammer or other blunt instrument; unless this
was carefully performed, tabs 25 and 33 were apt
to be damaged and the blank or blanks ruined.
In forming a box from the blank of the present
invention, the side wall and end wa11 sections 9
45 engages the bottom ‘I and provides a positive
support of de?nitely measurable and readily ap
parent value.
Referring to Figures 4 and 7, I have there in
dicated the variation which is possible in cuts
[9, 21 and 29. I have previously indicated that
cut l9 should be made in side wall 9 in a posi
tion intermediate those in which the cut lies
and II of the blank are creased along the score 10 along a radius of the circle 2| and is spaced 45°
from out 40 which separates wing section I3 from
lines I!) and 39 of the blank to form the side and
side wall section 9. I have further stated that
end walls 9a and I l a, respectively, of the box; and
either simultaneously with Or following such
cut 21 should be made so that it terminates on
circle 2| and so that if out 27 were projected it
creasing, the end wall wings l3 are folded in
would be at 90° to the projected line of cut is.
wardly toward the side walls on crease lines 20.
As the ?nal step in the assembling of the box, the
locking tab 46 of each wing is guided through a
side wall cut l9 and forced forward until the
edge of the side Wall tab 25 formed by such cut,
snaps in behind the corresponding edge of the
locking tab 45 in a self-locking action and engages
bottom 1 thereby e?ectively and positively hold
ing the end wall Ha in proper position with re
spect to the side walls 9a of the box.
Such self-locking action and positive support is
attributable to the fact that the locking tab 25
I have found that the extreme positions of cuts
21 and i9 are as indicated by letters A and C in
Figure 4, while the intermediate positions are
typically and broadly represented by position B
in Figure 4 wherein cuts 21 and I9 are at 90° to
each other and where cut l9 lies between 10° and
20° removed from position A. I do not wish to
indicate that positions A and C are inoperative.
However, the best looking effect is obtained in
one of the intermediate positions.
In either po
sition A or position C, the wing and side wall,
of the side wall, during such assembling of the
box, is stressed out of the plane of the side wall,
and likewise the locking tab of the wing is stressed
out of the plane of said wing, thereby establish
ing an existing tendency for these tabs to return
to their original planes while tab 46 is held pos
itively against bottom 1.
Arcuate cuts GI and 62 provided respectively at
the ends of cuts 2'! and I9 enable the cuts to be
interengaged readily and without tearing of the
stuff of which the blank is made. The lengths
when engaged, are interlocked only by a face-to
of cuts 6| and 62 are varied to suit the thickness
of the blank.
through to the edge at the same angle. The nor
mal cut [9a facilitates threading of tab 45 into
face engagement parallel to the end wall. The
locking secured with either position A or C is
not nearly so effective as when the cuts are made
in one of the intermediate positions. Positions
D and E in Figure 7 represent the extreme pre
ferred angular positions of cuts 21 and I9, Cut
l9a is shown in Figure 4 as continuing cut I9
to the side .wall edge I‘! at right angles to the
edge. This is the preferred construction; how
ever, as appears in Figure 7, cut 19 can run
The 90° relationship between the cuts [9 and 40
21 associated at each corner forming section of
place.
the blank, brings the engaging edges of the look
ing taps 25 and 46 into line contact along the
edges of cuts l9 and 21 for practically the entire
lock where there exists a de?nite crossing or in
a de?nite hinge line for the tab and thereby fa
cilitate the operation of assembling the box from
the blank, particularly for machine assembly or
for the assembly of small boxes, by providing a
groove at the junction with the wall cut IQ for
the tab 46 to slide in, instead of the sharp nar
tersection of engaging edges.
row end of the cut.
length of these edges, as distinguished from a
point contact existing in the prior art type of hook
A score line 35 across the tab 25 will provide
The score line further en
hances the locking action in presenting an offset
By spacing the side wall cut IS the same dis
tance from the end of the side wall section 9, as 60 or ridge which effectively increases the abutting
surface to the engaging tip of the tab.
the wing cut 29 is spaced from the edge of the end
Proper and effective functioning of the corner
wall section II, interlocking of the tabs 25 and
lock of my invention is, in large measure, based
46 will occur when an end wall section reaches
upon the use of sheet material which has the
its ?nal position in abutment against the end of
characteristics of stiffness and resiliency, for an
the side Wall section to form a box corner with
tab 46 engaging bottom ‘I, thereby preventing
e?icient locking will not be realized when employ
ing sheet material, such as heavy paper or card
board formed of soft pulp as is customarily em
ployed in suit or hat boxes,
against forces from either direction, the end wall .
A sheet material which has proven very ef
being locked against movement either forward or 60
?cient as well as economical, is one developed
rearward of its ?nal position. In other words,
particularly for this purpose, and comprises an
the end walls and wings are swung only to their
intermediate layer of pulp, and an outer layer
?nal position to obtain positive locking and sup
on one side of material known to the trade as
port; it is not necessary to swing them beyond
such position as in the hook type lock of the prior 65 glassine, and an outer layer on the other side of
thin bond paper, both outer layers being adhe
art.
'
sively secured to the intermediate layer by a suit
The advantage of the present invention will be
able binder. The important feature in connec
further apparent upon comparing the structure
tion with this paper is the fact that a normal
shown in Figure 3 of my prior patent and which
is typical of my prior invention with the structure 70 amount only of binder is preferably employed in
adhesively securing the outer layer of bond paper
shown herein in Figure 3, for example. To resist
to the intermediate layer, whereas the inner layer
a collapsing force applied against end I la in Fig
of glassine paper is adhesively secured by an
ure 3 in my patent, one must depend on the en
amount of adhesive material sufficient to impreg
gagement of cuts 2'! and I9 and some support from
mate the intermediate layer for a substantial
side So, because tab 33 terminates short of bottom
slack or looseness between the box components
and creating a box corner of substantial rigidity
2,404,916
5
portion of its thickness. This adhesive, which
may be that generally used in paper manufac
ture, has the property, upon drying, of rigidifying
the impregnated portion of the intermediate
layer, thereby increasing the stiffness and resil
6
tion, said side wall section having a cut in the
longitudinal edge thereof in a direction transverse
to a circle having its center
said bottom section to form
ie plane of said side wall
wing having a cut transverse
at the corner of
a locking tab in
section, and said
to said circle and
imparted to the material by the deep impregna
substantially normal to
side wall section
tion of one surface of the intermediate layer, fur~
ther enable the formation of rather sharp cor
ners between the components of the box when
ity of said wing out to said separating wing cut
iency thereof on one side. These characteristics
cut, and
.cr cut extending from an extrem
substantially along an are through approximate
ly the inner extremity of said side wall cut, to
de?ne with said
out and separating cut, a
locking tab in the plane of said wing adapted
to be wedged through said side wall section cut
during
folding of said blank into box formation
15
wherein the end walls Ila are of substantially
to automatically interlock with said side wall
greater height than the side walls 9a. Boxes of
section tab
edge to edge engagement therewith
this type lend themselves very nicely to the pack
with said tab in engagement with said bot
aging and merchandising of commodities such as
tom to support positively said end wall section.
pastry, doughnuts and the like. By shortening
2. A box having a self-locking box corner com
ends II, the ends and sides can be made of the 20
prising a bottom section, a side wall section and
same height as appears in Figures 2 and 3 and
an end wall section, a wing extending from said
the invention is not limited to “boat” type boxes.
end wall section adjacent said side wall section
In Figure 5 I have shown the improved corner
and separated by a cut from said side wall sec
and box construction of this invention as applied
tion,
said side wall section having a cut in the
to a multiple unit of box in which several indi— -.
longitudinal edge thereof transverse to a circle
vidual locks are provided to provide a complete
having
center at the corner of said bottom
box. It will be obvious that the term “end,”
section and at an angle between 10° and 20° to a
“bottom,” and “side” may, in fact, refer to ele
line parallel to said separating out to form a lock
ments which, in the ?nal structure are not in fact
ing tab in the plane of said side wall section,
such. It will be obvious to those skilled in the
and said wing having a cut substantially normal
art that these terms are broadly employed with
to said side wall section cut, and another cut
out the limitation normally imparted. In any
extending from an extremity of said wing cut
case, the box and its contents may conveniently
to said separating out substantially along an arc
be wrapped with transparent material such as
Cellophane, as the upper edges of the walls offer l of said circle passing through approximately the
inner extremity of said side wall cut to define
adequate support for the wrapping, without nee»
with said wing out, a locking tab in the plane
essarily permitting the wrapping to snugly en~
of said wing adapted to be wedged through said
gage the contents of the boX. Waxed wrapping
side wall section cut during folding of said blank
paper may also be used.
into box formation to automatically interlock
By reason of the rigid support offered to the
with said side wall section tab in edge to edge
end walls by my lock construction, the box, when
engagement therewith and with said tab in en
wrapped with Cellophane or waxed paper, lends
gagement with said bottom to support positively
itself to heat sealing
machine or hand, for the
said end wall section.
end walls and bottom can stand the sealing pres
the blank is folded with the impregnated side
of the intermediate layer facing inwardly.
My improved locking means permits of the de
sign and construction of boxes of the “boat” type
sure without such ?exing as would tend to weaken 45
or break the seal upon removal of such pressure.
This characteristic obtains. notwithstanding in
3. A box having a self-locking box corner com
a bottom section, a side wall section and
an end wall section, a wing extending from said
ward pressure distortion of the side walls due to
any clamping means for holding the box dur
ing the sealing process.
While I have disclosed the preferred embodi
ment of my invention in detail, I do not wish to
be limited in my protection to such details, as
the embodiment disclosed by me is susceptible to
end wall section adjacent said side wall section
example, the box may be constructed with end
walls of the same or lesser height than the side
walls by removing the corners of the side walls
said side wall out being spaced from the end of
said side wall a distance substantially equal to
the spacing of said wing cut from the end wall
section, and another cut to said separating cut
extending from an extremity of said wing cut
substantially along an are through approximately
the inner extremity of said side wall cut to de?ne
with said wing cut, a locking tab in the plane of
said wing adapted to be wedged through said side
wall section cut during folding of said blank
and separated by a cut from said side wall sec
tion. said side wall section having a cut in the
longitudinal edge thereof in a direction trans
verse to a circle having its center at the corner
of said bottom section to form a locking tab in
the plane of said side wall section, and said wing
change and modi?cation, without departing from 55 having a cut transverse to said circle and sub
stantially normal to said side wall section cut,
the principles and spirit of my invention. For
and placing the side wall cut in the horizontal
edge thus formed. Another change contemplated,
is to form the side wall cut is by providing a
narrow notch in the edge of the wall. This would
preferably be the practice where the box is to‘ be
formed of extra heavy material. Other changes
will, no doubt, suggest themselves to those skilled
in the art.
I claim:
into box formation to automatically interlock
with said side wall section tab in edge to edge
engagement therewith and with said tab in
1. A box having a self-locking corner compris
engagement with said bottom to support posi
ing a bottom section, a side wall section and an 70
tively
said end Wall section.
end wall section, a wing extending from said
end wall section adjacent said side wall section
REGINALD B. MEILER.
and separated by a cut from said side wall sec
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