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Патент USA US3044668

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July 17, 1962
T. C. COMBS ETAL
3,044,658
SHIPPING CONTAINER
Filed May 12, 1958
:
2
l6’ /6
30 77-/E0D0RE C.COMBS
16 JA MES M. DOBBIE
INVENT0R5
ATToRMr/
United States Patent 0
lC€
1
3,044,658
Patented July 17, 1962v
2
' receiving slots incorporate a plurality ofpockets adapted,
3,044,658
to receive a suitable sealant and adhesive ‘whereby the
SHIPPING CONTAINER
Theodore C. Combs, San Marino, and James M. Dobbie,
edges of the panels of the container disposed in the slots
Pasadena, Calif., assignors to Zero Manufacturing 5 de?ned by said jaws may be permanently and securely
sealed against the in?ltration of ambient air into the
Company, Burbank, Calif, a corporation of California
interior of the container.
I
' ~
Filed May 12, 1958, Ser. No. 734,707
A further object of the invention is the provision of
9 Claims. (Cl. 220-80)
shipping container of the aforementioned character where
This invention relates to a shipping container for vari
in the component parts can be maintainedin the inven
ous types of objects such as missiles, alignment ?xtures, 10 tory of the manufacturer and shipping containers of any
test equipment, optical gear and other instrumentation.
desired size be assembled therefrom. While in the dis
Conventional shipping containers have been foundto
closure appearing herein'below a speci?c shape of ship
be quite inadequate when utilized in shipping such articles
ping container is described, it is, of course, to be under
as missiles, complex electronic instrumentation, and other
stood that a variety of different shapes of containers
manufactured devices which are susceptible to corrosion 15 may be provided incorporating the basic elements of the
and to malfunctioning due to exposure to climatic condi
tions. Conventional shipping containers are unable to
cope with such variations of temperature and climatic
invention.
Other objects and advantages of the invention will be ‘
apparent from the following speci?cation and the accom~
conditions and thus the instrumentation and other objects
shipped therein are frequently permanently damaged. ,
It is, therefore, an object of our invention to provide
a shipping container consisting of a plurality of prefab
panying drawing which is for the purpose of illustration
20
only and in which:
7 '
'
FIG. 1‘ is a perspective view of a shipping container
constructed in ‘accordance with the teachings of the in
ricated parts including various extruded shapes constitut
vention;
ing the frame members and vertical posts of the container
:FIG. 2 is a transverseQsectional ‘view taken on the
and adapted to receive a plurality of sheet metal panels 25 broken line 2--2 of FIG. 1 showing a transverse segment
which serve as constituent elements of the shipping con
of the container;
tainer.
FIG. 3 is an enlarged, fragmentary, sectional-view of
Another object of the invention is the provision of a
a typical corner post constructed in accordance with the
shipping container of the aforementioned character
teachings of the invention;
'
wherein the frame members and corner posts of the ship 30
FIG. 4 is an enlarged, fragmentary, sectional view of
ping container are constituted by extruded shapes of sub
an alternative 'form'of corner post construction; andv
stantially rectangular, tubular con?guration and‘wherein
FIG. 5 is a transverse, sectional view of an alternative
said tubular extruded shapes are provided with jaws de
form of frame member utilized in fabricating the shipping
?ning panel receiving slots in the plane of the innermost
container of the invention.
,
walls thereof.
While the construction and mode of operation, of the
One of the major hazards encountered in conventional
invention will be described in conjunction with a ship
shipping containers is the‘ fact that the wall or bottom
ping container, it is of course, to be understood that the
and top structures thereof are frequently damaged by
principles thereof may be applied with equal cogency to
juxtaposition of the shipping container to a protruding
various types of containers and that there is no intention
object or to an adjacent container. This largely attrib 40 that the principles of the invention be limited to the par
" utable to the fact that, in conventional containers, the
ticular application discussed hereinbelow.
frame members and corner posts are substantially in the
Referring to the drawing and particularly to FIGS. 1-2
same plane as the panel sections thereof.
,
thereof, there is shown a shipping container 10' construc
A further object of the invention is the provision of a
ted in accordance with the teachings of the invention,
shipping container of the aforementioned character where
in the side, end, top, and bottom panels are disposed
inwardly in the plane of the inner walls of the frame
members and corner posts and wherein the tubular bodies
of the frame members and the corner posts serve as
buffers isolating the panels of the shipping container from
damage.
.
A ‘further object of our invention is the provision of
said shipping container being of substantially rectangular
con?guration and including a top portionlz and a bot
tom portion 14. The top and bottom portions include
and utilize various extruded shapes, as will be apparent
from the discussion hereinbelow but, in the present em
bodiment of the invention, the bottom portion 14 is con
siderably deeper than the top portion 12 of the shipping
container 10.
a shipping container of the aforementioned character
Among the extruded sections utilized in fabricating the
wherein the panels themselves are provided with a plu
shipping container ‘10 are vertically oriented corner posts
55
rality of outwardly directed stiifeners which, due to the
16 which also serve as frame members on the top and
recessed location of the panels, have their outermost
bottom portions 12 and 114 of said container. Since the
portions disposed inwardly of the plane of the outermost
cross-sectional con?guration of the corner posts 16 is
portions of the tubular bodies of the frame members
adequately disclosed in FIGS. 2 and 3 of the drawing,
and the corner posts, thus preventing said stitfeners from
no cross section of the corner posts in their location and
impinging upon adjacent objects or containers.
vertical orientation at the corners of the top and bottom
It is frequently necessary’to isolate the contents of
portions 12 and ‘14 of the shipping container 10 is in
shipping containers of the character under consideration
corporated in the drawing, it being understood that the
here from contamination by the ambient air and for this
cross sections of the corner posts are identical with these
purpose the containers must be pressure tight. Conven
members when utilized as horizontal frame members in
tional containers wherein conventional joints are utilized 65 the container 10.
,
'
.
are, of course, quite inadequate for this purpose due to
Intermediate frame members 18 are also utilized in fab
the ‘fact that the sealing of the joints between the panel
and supporting structures thereof is extremely di?icult.
ricating the top» and bottom portions 12 and 14 ‘of the‘
shipping container 10 and the top edge of the bottom por
Another object of our invention is the provision of a
tion 14 is de?ned by rim frame members 20 of the con
container of the aforementioned character wherein the 70 ?guration shown in FIG. 2 of the drawing. The bottom
inner walls of the jaws de?ning the aforementioned panel '
edge of the top portion 12 of the container 10 is de?ned
3,044,658
3
by rim frame members 22 and 24, the rim frame member
22 serving for the sides and back of the top portion 12
and the rim frame member 24 serving for the front por
tion thereof, as will be made apparent in greater detail
hereinbelow.
Each of the frame members and corner posts is, as best
shown in FIG. 2 of the drawing, of substantially rec
the sections of the rim frame member 20 and having
spaced, upwardly directed alignment and sealing ribs 56
and 58 provided thereupon. The ribs 56 and 53 consti
tuting male members, will be described in greater detail
hereinbelow.
Of course, the slots 36 in the lowver edges of the inner
most walls 52 of the rim frame members 20 receive the
upper edges of the panels 40 and incorporate the adhesive
tangular, tubular cross section and each is preferably
receiving pockets 42 for permitting the ?uid-tight a?ix
formed from aluminum extrusions since such extrusions
are light-weight, relatively economical and permit the 10 ation of said upper edges in the aforementioned slots.
The rim frame members 22 and 24 on the lower edge
maintenance of relatively close manufacturing toler
ances. Moreover, a large stock and inventory of stand
ard lengths of the frame and corner posts members can
be maintained and cut to size when the need for a pre
of the top portion 12 of the shipping container 18' are co
operative with the rim frame members 20, the rim frame
members 22 being located at the back and sides of the top
portion 12 of the container 10 and each of said members
including exterior walls 63 and an innermost wall 62,
as best shown in FIG. 2 of the drawing, having jaw mem
determined length or con?guration of shipping container
arises.
At this juncture it appears appropriate to point out
bers 34 formed integrally therewith and de?ning slots of
that, while the shipping container 10 shown in FIGS. 1
the character of the slots 36 previously described as in
and 2 of the drawing is of rectangular con?guration, it is,
of course, not intended to limit the principles and teach 20 corporated in the other frame members and corner posts.
A lower wall 66 is provided which incorporates a fe
ings of the invention to a speci?c con?guration of ship
male alignment groove 68 and a seal receiving groove 70
ping container since it is conceivable that the frame
in which is located a seal 72. Thus, the male alignment
members and/ or corner posts of the invention be utilized
rib 56 is received in the alignment groove 68 and the
in various types of containers such as containers of cylin
male sealing rib 58 engages the seal 72 to provide a ?uid
drical and other con?gurations.
tight seal between the rim members 20 and 22. It will be
The corner posts 16 which, as best shown in FIGS. 1
noted that the rim members 20 and 22 are joined in oper
ative relationship with each other by means of a hinge 74
at the back of the shipping container 10, but such a hinge
as exterior walls 30' and a right-angularly shaped inner
wall means or interior wall 32 which is of thicker cross 30 is, of course, not dictated in all applications or embodi
ments of the invention.
section than the exterior 1walls 30 which include two in
The rim frame member 24 located in the front of the
ner walls meeting at a crest or edge, these inner walls
top
portion 12 of the shipping container 10 includes an
having even thicker extensions beyond their junctions
exterior wall 60 and an innermost wall 62 having slot de
with the exterior walls 30, each extension having a pair
?ning jaws 34 provided on one edge thereof. The lower
of jaw members 34 spaced to de?ne panel receiving slots
wall
66 incorporates female grooves 68 and 70 which
36, as best shown in FIG. 3 of the drawing. The jaw
serve the same function as the grooves in the previously
members 34 and the slots 36 de?ned thereby can thus be
discussed rim frame member 22. The primary distinc
considered as lying in substantially the same plane as the
tion between the rim frame member 22 and the frame
plane of the adjacent edges of the interior or innermost
member 24 lies in the provision of a continuous groove
wall 32 of the respective corner posts 16 or can be alter
76 which is adapted to receive a latch member indicated
natively considered as being located on the side walls 30
at 77 maintaining the top and bottom portions 12 and
adjacent the intersections of the side walls 30 with the
14 of the shipping container 10 in closed and sealed rela
interior _or innermost wall 32.
tionship.
In any event, when disposed at the corners of the top
An alternative jaw construction for the frame members
and bottom portions 12 and 14 of the shipping container
and
posts is shown in FIG. 4 of the drawing wherein one
10, the slots 36 de?ned by the jaw members 34 are adapt
of the jaws 78 is bent outwardly away from the other to
ed to receive the opposite extremities of panels 40 formed
de?ne a slot 80 which is open wider at its outer extremity
from aluminum or other desirable material. To insure
than at its inner extremity to facilitate the entry of the
that a ?uid-tight seal will be attained between the co-op
crating extremities of the panels 40 and the inner walls 50 contiguous edge of a panel into the slot 80. Moreover,
the inner walls of the jaws 78 may be provided with pro
of the jaw members 34, said jaw members are provided
trusions 82 and co-operating recesses 84 so that when the
with elongated grooves 42 therein which constitute pock
bent jaw 78 is crimped or otherwise deformed into op
ets for the reception of adhesive sealing materials which
erative engagement with the contiguous surface of an
perform the joint function of sealing the panels in the
slots against in?ltration of ambient air or moisture and C1 Cir associated panel, the protrusions 82 on the inner wall of
the jaw will deform the panel and create a mechanical
of securing the panels against displacement from said
joint between the panel and the associated jaws.
slots.
An alternative front rim member 90 is shown in FIG.
Typical of the adhesives utilized are epoxy resin ad
and 2 of the drawing, also serve as horizontally oriented
frame members, include an outer wall means indicated
5 of the drawing and differs from the previously de
hesives, but alternative resins may be utilized if desired.
Also incorporated in the container 10 are the inter 60 scribed and disclosed rim member 24 in that the jaws 34
de?ning the slot 36, instead of being directed upwardly
mediate frame members 18, each of which has three ex
to engage the contiguous edge of a panel, are directed
terior walls 44 and an innermost or interior wall 46 hav
laterally to engage the top panel of a top portion of a
ing jaw members 34 at its opposite edges de?ning panel
shipping container.
receiving slots 36. Thus, the slots 36 in the intermediate
The side panels 40 of the bottom portion 14 of the
frame members 18 are adapted to receive the contiguous
shipping container 10 are provided with outwardly pro
edges of top and bottom panels 48, as best shown in
jecting integral ribs 92 which serve as stiffeners therefor
FIGS. 1 and 2 of the drawing. Of course, the inner walls
and which, as best shown in FIG. 2 of the drawing, have
of the jaw members 34 of the intermediate frame mem
their outermost surfaces disposed inwardly of the plane
bers 18 incorporate adhesive receiving pockets 42 for the
of the outermost exterior wall '30 of the horizontally
reasons previously mentioned.
’
oriented frame member constituted by the corner post
The rim frame member 20 encompasses the upper edge
extrusions 16.
of the bottom portion 14 of the shipping container 10
In fabricating the various shipping containers which
and includes exterior walls 50 and an interior or inner
can be assembled from the component parts described
most wall 52 having jaw members 34 formed upon one
edge thereof, an upper wall 54 being provided on each of 75 in detail hereinabove, it is obvious that if a stock of
3,044,658
5
lengths of the various extrusions constituting the frame
members and corner posts is kept on hand, together. with
1'. A high-strength panel-sided shipping container pro
a stock of sheet material, containers of different sizes
viding maximum. internal rectilinear cubage therefor, said
and shapes, as dictated by the ultimate end use thereof,“
container comprising panels secured to frame members
can be fabricated simply by cutting the frame members
providing external protection for the panels and reenforce—
and corner posts to the desired lengths and by cutting
ment at the panel edges largely outside the container, cer
the sheet material into panels which will conform to
tain of said frame members each comprising an extruded
the dimensions of the openings de?ned by the co-opera
tubular member having a cross section de?ned by integral
tive frame members and corner posts. vTherefore, it is
outer and inner wall means completely surrounding an
possible for a manufacturer to keep a supply of raw 10 internal space extending longitudinally of the frame mem
material adapted for use in fabricating a large number
ber, said inner wall means including two inner walls
of shipping containers in a relatively small storage space
joined at right angles to each other along adjacent inner
and it is also possible to fabricate a large number of con
edges each having a junction zone extending longitudinal
tainers upon relatively short notice because of the simple
ly of the frame membervand spaced uniformly from said
assembly techniques which are utilized.
inner edges, each inner wall having an extension beyond
After the panels 40‘ and 48 have been fabricated from
its junction zone forming a part of said inner wall means
the appropriate sheet material, such as aluminum sheet
and substantially aligned with the corresponding inner
stock, the edges thereof are wiped with epoxy adhesives
wall and integral therewith at said junction zone, each
and located in the slots of the contiguous post and frame
extension having a panel-receiving slot substantially
members.’ After the various post and frame members 20 aligned with the corresponding inner wall and terminating
have been assembled about the edges of the panels 40
in a bottom wall closely adjacent the corresponding junc
and '48, the abutting corners thereof, which have been ap
tion zone, said panel-receiving slot being laterally bounded
propriately mitered or otherwise shaped, can be weldedv
by side surfaces parallel to the midplane of the corre
or otherwise suitably af?xed to each other by conven
sponding inner wall and embracing a panel edge therebe
tional techniques.
tween, said outer wall means being integral with said
Among thev inherent advantages of the shipping con
tainer of the invention and the tubular shapes constituting
the frame members and corner posts thereof, is the fact
that the tubular shape of the frame members and corner
posts imparts a rigidity to the shipping containers not
found in prior art constructions. Moreover, since the
inner wall means at‘ said two junction zones and looping
right angularly outward therefrom in widely spaced rela
tion to said adjacent inner edges, the direct distance from
either junction zone to the outermost portion of said
outer wall means being‘several times the thickness of
the corresponding extension thereby exposing said outer
panels constituting the enclosing portions of the shipping
wall means outwardly beyond s'aid extensions to provide
hand spaces for lifting the container and its contents.
container 10 are disposed in the plane of the innermost
Walls of the various frame members and corner posts, the
container is further rigidi?ed and the tubular portions of
~ v2. A container as de?ned in claim 1 in which each ex
tension provides jaw members bounding said panel-receiv
ing slot, and wherein that jaw member nearest the in
the frame members and corner posts serve as hand holds
and as bu?fer or bumper means whereby the relatively
terior of said containeris longer, in a direction away
from said bottom wall, than the other of said jaw mem
bers to provide a panel stop for the edge of a panel
40 when the same is aligned with said slot ‘for insertion
tact with sharp protrusions and projections.
Of particular importance is the‘fact that the inner
thereinto.
walls of the jaws on the various posts and frame mem
3. A high-strength panel-sided shipping container pro
bers are provided with adhesive receiving pockets or
viding maximum internal rectilinear cubage therefor, said
grooves whereby the individual panels can be secured
container comprising panels secured ‘to frame members
in ?uid-tight relationship With the individual frame mem 45 providing external protection for the panels and re
enforcement at the panel edges largely outside the con
bers and corner ‘posts. It will also be noted that the
recessed character Of the panels permits the incorpora
tainer, certain of said ‘frame members each comprising
fragile panels are isolated from contact with contiguous
articles or surfaces and particularly from damaging con
tion of outwardly projecting reinforcing ribs therein or
thereupon. Nevertheless, the reinforcing ribs still have
their outermost portions disposed inwardly of the outer
50
an extruded tubular member having a cross section de?ned
by integral outer and inner Wall means completely sur
rounding an internal space extending longitudinally of
most Walls of the associated frame members and corner
the frame member, said inner wall means including two
posts.
If a ?uid-tight joint between the contiguous edges of
the panels and the adjacent jaws of the frame members
inner walls joined at right angles to each other along
adjacent inner edges, each inner wall having an extension
and corner posts is not desired, 'a mechanical joint may
be achieved by the utilization of jaw members of the
of- and integral therewith, each inner wall and its thicker
character of those shown in FIG. 4 of the drawing at 78
each other at a junction zone extending longitudinally
of the frame member, each thicker extension having ‘a
thicker than said inner wall forming a continuation there
extension having outwardly-facing surfaces offset from’,
wherein a mechanical bond between the panels and the
jaw members is achieved by crimping the outwardly bent
jaw members 78 and the protrusions 82 thereupon into
operative relationship with the adjacent surface of a
panel.
' _
The invention thus provides a relatively simple means
whereby shipping, storage, and housing containers of var
ious con?gurations and sizes may be readily and expedi
tiously manufactured and whereby ?uid-tight character
60
panel-receiving slot terminating in a bottom wall closely, '
adjacent the corresponding junction zone, said panel
receiving slot having inner and outer sides parallel to
the midplane of the corresponding inner wall and em
bracing a'panel edge therebetween, the central midplane
of each panel-receiving slot lying within the con?nes of
the corresponding inner wall between the opposed faces
thereof,said outer wall means being integral with said
inner Wall means at said junction zones and looping out
wardly from the latter beyond said adjacent inner edges, 7
time and labor. Also characteristic of the shipping con- 7
said internal space being bounded'to a large extent by
tainer of the invention is the fact that the component 70 the inner surfaces of said outer wall means and to a
is'tics can be achieved with a minimum expenditure of
elements thereof can be dis-assembled, if desired, after _
an object shipped therein has been utilized or arrived at
its predetermined destination, the components being re
smaller extent'by the outwardly-facing surfaces of said
inner walls.
I’
4. A high-strength panel-sided shipping container pro
turned to the manufacturer or to a common depot for
viding maximum internal rectilinear cubage therefor, said
75 frame members providing external protection for the .
reuse and reassembly.
3,044,658
P’
1
panels and reenforcement at the panel edges largely out
side the container, certain of ‘said frame members each
comprising an extruded tubular member having a cross
section de?ned by integral outer and inner wall means
completely surrounding an internal space extending longi
tudinally of the frame member, said inner wall means
including an inner wall having an extension thicker than
slightly greater than the thickness of such panel, at least
one side surface of said panel-receiving slot having a
shallow adhesive groove facing-the central midplane of
the slot and extending throughout the length thereof,
there being an adhesive in such slot and such adhesive
grooves thereof, said adhesive forming the sole attach
ment between such panel edge and such tubular frame
member, the ratio of depth to width of said panel-receiving
such inner wall forming a continuation thereof and in
slot being at least about 3:1, said outer wall means of
tegral therewith, said inner wall and said thicker extension
thereof having coplanar inwardly-facing surfaces on one ll) each tubular frame member being integral with said inner
wall means thereof at the two junction zones thereof
side facing away from the axis of said internal space, said
and looping right-angularly outward therefrom around
inner wall and said thicker extension having outwardly
said adjacent inner edges in widely spaced relation there
facing surfaces offset from each other at a junction zone
extending longitudinally of the frame member, said
thicker extension having a panel-receiving slot terminating
in a bottom wall closely adjacent said junction zone, said
slot having inner and outer sides parallel to the midplane
of said inner wall and embracing a panel edge there
between, at least one such side having a shallow elon
gated adhesive-containing groove extending longitudinally ‘
of said slot throughout the length thereof, each adhesive
groove facing the central midplane of said panel receiving
slot, said outer wall means being joined integrally with
said inner wall and its extension at said junction zone
throughout the length of the latter, said outer wall means '- Y
looping outwardly in rectilinear form and returning to
and being integral with said inner wall means at another
junction zone thereof parallel to said ?rst-named junction
to, such outer wall means providing an external crest
forming a protective edge of said container, the direct
distance from either junction zone outward to said ex
ternal crest being several ‘times the thickness of the cor
responding extension thereby exposing such outer wall
means outwardly beyond said extension and the panel
adhered thereto to provide a hand space for lifting the con
tainer and its contents.
7. A rectilinear parallelepiped high-strength shipping
container providing maximum internal rectilinear cubage
therefor while providing reenforcement largely outside
the container, said container having four bottom corners
each of which comprises two tubular horizontal frame
members extending toward each other at right angles,
an upright tubular frame member extending at right angles
to each of said horizontal frame members, and three
zone, said outer wall means having inner surfaces bound
ing said internal space, said offset outwardly-facing sur 30 panels at right angles to each other having edges respec
face of said inner wall facing and lying parallel to one of
said inner surfaces of said outer wall means to bound a
portion of said internal space, the extended central mid
plane of said panel-receiving slot being substantially paral
tively attached to said three frame members exclusively
by adhesive, each of said tubular frame members being
a tubular member having a cross section de?ned by in
tegral outer and inner wall means completely surrounding
lel to and closely adjacent said outwardly facing internal 35 an internal space extending longitudinally of the frame
member, said inner wall means of each tubular frame
space-bounding surface of said inner wall.
member comprising two inner walls joined at right angles
5. A frame member as de?ned in claim 4 in which said
to each other at adjacent inner edges, each inner wall
inner and outer sides of said panel-receiving slot are
having an extension forming a continuation thereof in
respectively on the same side of the midplane of such
slot as are the inwardly-facing and outwardly-facing sur 10 a direction away from said inner edges and integral with
such inner wall at a junction zone extending longitudinally
faces of said inner wall, and in which said outwardly
of the frame member, each extension having a narrow
facing surface of said inner wall is substantially coplanar
panel receiving slot substantially aligned with the corre
with said outer side of said panel-receiving slot.
6. A rectilinear parallelepiped high-strength shipping
container providing maximum internal rectilinear cubage
therefor while providing reenforcement largely outside the
container, said container having four bottom corners
each of which comprises two tubular horizontal frame
members extending toward each other at right angles, an
upright tubular frame member extending at right angles to each of said horizontal frame members, and three
panels at right angles to each other having edges respec
tively attached to said three frame members exclusively
by adhesive, each of said tubular frame members being
a tubular member having a cross section de?ned by in- Y
tegral outer and inner wall means completely surrounding
an internal space extending longitudinally of the frame
member, said inner wall means of each tubular frame
sponding inner wall with its extended central midplane
substantially parallel to and closely adjacent the outward
ly-facing internal-space-bouncling surface of said inner
wall whereby forces in the planes of said panels are
transmitted directly to the respectively aligned inner walls,
there being an adhesive in each slot forming the sole at
tachment between the panel edge therein and the corre
sponding tubular ‘frame member, said outer wall means
of each tubular frame member being integral with said
inner wall means thereof at the two junction zones thereof
and looping outwardly therefrom around said adjacent
inner edges in widely spaced relation thereto, said outer
wall means having four integral side walls at right angles
to each other comprising two wider side walls meeting
in an external crest diagonally opposite said adjacent
member including two inner walls joined at right angles
to each other along adjacent inner edges and bounding
inner edges of said inner wall means and two narrower
side ‘walls extending to said ‘two junction zones of such
a portion of the internal Space of such frame member,
there being a junction zone along portions of each inner
inner wall means.
8. A rectilinear container as de?ned in claim 7, in which
each extension is ‘thicker than the corresponding inner
wall from which it extends, each such inner wall and
its extension having coplanar surfaces facing the interior
such inner wall having an extension beyond its junction
of said container, each such inner wall and its extension
zone forming a part of said inner wall ‘means and sub
having outwardly-facing surfaces offset from each other
stantially aligned with the corresponding inner wall and
at said junction zone and respectively facing the internal
integral therewith at said junction zone, each extension
space of the corresponding frame member and the exterior
having a narrow ‘panel-receiving slot substantially aligned
with ‘the corresponding inner wall and closly adjacent 70 of said container.
9. A rectilinear container as de?ned in claim 7 in which
thereto terminating in a bottom wall closely adjacent the
the panel-receiving slot of each extension divides the
corresponding junction zone, said slot being laterally
latter to form inner and outer jaw members disposed
bounded by side surfaces parallel to the midplane of the
respectively closer to the interior and exterior of said
corresponding inner wall and spaced apart and receiving
container, and in which said inner jaw member is longer
the edge of a corresponding panel and of a width only
wall spaced uniformly from said adjacent inner edges
and extending longitudinally vof said frame member, each
3,044,658
10
than said outer jaw member in a direction away from
the bottom wall of such panel-receiving ‘slot to provide
a panel stop engagea'ble by the edge of a panel to be
inserted into such 8101:.
References Cited in the ?le of this patent
UNITED STATES PATENTS
861,311
Norris _______________ __ July 30, 1907
936,451
2,079,635
2,162,271
.
.
Havenhill ____________ __ Oct. 12, 1909
Sharp _______________ __ May 11, 1937
> Munters _____________ __ June 13,1939
2,45 6,929
2,457,002
2,724,468
Budington -_ __________ __ Aug.
Dee _________________ __ Dec.
Spiro ________________ __ Dec.
Mautner _____________ __ Nov.
2,767,876
M'autner _____________ __ Oct. 23, 1956 '
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,
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