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Патент USA US3028906

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April 10, 1962
w. H. GOODING
3,028,896
BULK CONTAINERS
Filed. Nov. 27, 1959
3 Sheets-Sheet 1
FIG. 1.
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INVENTOR.
WILLA RD H. Goon/Na
BY
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ATTORNEY
April 10, 1962
w. H. GOODING
3,028,896
BULK CONTAINERS
Filed. Nov. 27, 1959
3 Sheets-Sheet 2
INVENTOR.
I’V/LLARD H. GOOD/MG
BY 4/2 @559
A TTOENEY
April 10, 1962
W. H. GOODING
3,028,896
BULK CONTAINERS
3 Sheets-Sheet 3
Filed. NOV. 27, 1959
F36‘. 9.
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66
INVENTOR.
W/LLARD H. Goon/Na
54
56
United States Patent O??ce
1
3,028,896
Patented Apr. '10,‘, 1.1962
2
FIG. 9 is a partial cross-sectional view similar to FIG.
3,028,896
BULK CONTAINERS
Willard H. Gooding, Los Angeles, Calif., assignor to
Western Velo & Cement Specialties Company, Los An
geles, Cali?, a corporation of California
Filed Nov. 27, 1959, Ser. No. 855,612
9 Claims. (Cl. 150—1)
4 of a modi?ed bulk container of this invention; _
FIG. 10 is a cross-sectional view taken at line'10-10
of FIG. 9; and
.
.
FIGS. 11, 12, and 13 are perspective views of various
parts of this modi?ed container.
_
As an aid to understanding this invention it may be
stated essentially summary form that it concerns bulk con
This invent-ion pertains to new and improved containers
tainers, each of which is formed so as to include a ?exible
for handling comparatively large quantities of material. 10 tubular sack, the ends of which are secured to rigid sup
Containers of this type are generally constructed so as to
porting rings. Each of these supporting rings carries an
be capable of holding from about one thousand to two
thousand pounds or more of material, and, hence, are
end of a ?exible tubular closure. The other ends of these
tubular closures are secured to closure rings which are
commonly termed “bulk containers."
adapted to engage corresponding or adjacent supporting
Cost considerations have made it extremely desirable 15 rings. Means are provided upon each of the supporting
to ship granular materials such as cement, sand, aggregate,
various mineral ores, various re?ned chemicals, and the
like in comparatively large bulk containers of the type
indicated brie?y above. A variety of problems have been
encountered in providing satisfactory containers for such
purposes.
Any container for use in shipping comparatively large
quantities of material must be capable of adequately and
satisfactorily protecting its contents from damage, such as
may be caused by various environmental factors. vIt must
also be of such a nature that it can be easily and con
veniently handled and moved with existing equipment with
a minimum of dif?culty. A container of this type must
also be relatively inexpensive; it should also be compara
rings and each of the closure rings for securing adjacent
supporting and closure rings to one another. This inven
tion is best more fully explained by referring to the ac—
companying drawings. in the initial ?gures of these draw
ings there is shown a bulk container 19 of the present inf
ention which utilizes a ?exible tubular sack 12 having
open ends 14 secured to supporting rings 16, each of which
is constructed as indicated in FIG. 7.
The sack 12 is
preferably formed of a ?exible, watertight material such
as rubber coated canvas or the equivalent. These rings
16 preferably have a U-shaped cross-sectional con?gura
tion; this shape de?nes channels 17 extending around the
exterior of these rings 16. Each of the rings 16 includes
at least three equi-spaced pins or projections 44 which pro
tively light in weight and be of a collapsible construction 30 ject from its interiors. At least the uppermost of the rings
so as to be capable of being shipped to a point of use
when empty at a comparatively nominal cost. Satis
factory containers for use in the bulk handling of ma
terial preferably should also include some sort of a base
structure so as to prevent tipping of such containers dur
ing shipment. ‘In order to facilitate loading and unload
ing, containers for bulk materials should incorporate as
an integral part of them means serving to facilitate these
16 also includes retaining eyes 20 or the equivalent which
are adapted to ‘be engaged by, or carried by conventional
lifting or supporting equipment (not shown) during the
use of the container 10.
.
The rings 16 also carry ends 21 of ?exible tubular
closures 22 of smaller diameter than the sack 12. The
closures 22 are preferably formed of the same material as
the sack 12; thus, they are preferably formed of water
operations. To be acceptable commercially such contain
proofed canvas or the equivalent. These closures 22 are
ers should also incorporate a locking mechanism of a ‘type 40 also preferably, but not necessarily, secured together‘by
a plurality of flexible reinforcing webs 24 in the nature
so that they may be easily locked in a closed condition and
so that the contents of such containers may be easily dis
of common straps whichextend between the rings 16 so
as to connect them to one another. The webs 24 are
charged from them with a minimum amount of ditliculty.
A broad object of this invention is to provide new and
shorter than the sack 12 so that when the rings 16 are
improved bulk containers which are primarily designed to 45 secured in place this sack 12 “putfs” outward from the
rings 16 :as indicated in FIGS. 1 and 3 of the drawings.
be used in shipping granular and various other materials.
Before the sack 12 and the closures 22 are secured to
A related object of this invention is to provide bulk con
the rings 16 preferably they are overlapped or folded upon
tainers possessing commercially desired characteristics,
themselves at their ends 14 and 21 as indicated in' FIG.
qualities and features as brie?y indicated in the preceding
discussion. These and other objects of the present inven 50 5 of the-drawings. Before assembly it is preferred to at
tach the webs 24 directly to the adjacent ends 20 of the
tion together with many speci?c advantages of it will be
closures 22 as by stitching or the equivalent, although
apparent to those skilled in the art to which this invention
this is not absolutely necessary with the present inven
pertains from a detailed consideration of the remainder
tion. Further, it is preferable to stitch or similarly secure
of this description, including the appended claims and the
accompanying drawings. These drawings are primarily
intended so as to 'clearly illustrate several presently pre
ferred embodiments or forms of this invention.
‘In the drawings:
FIG. 1 is a side elevational view of a bulk container.r of
the overlapped or folded ends 14 and 21 of the closures
22 and the sack 12 in place as indicated‘ in FIG. 5, al-.
though this is also not absolutely necessary with this in
vention.
In securing the closures 22 to therings 16 the ends 21
lit. of the closures 22 are preferably passed through these
this invention ready to be ?lled with material;
rings and then are folded to a substantially U-shaped
FIG. 2 is a partial top plan view of this bulk container;
cross-sectional con?guration around the adjacent ends
FIG. 3 is a cross-sectional view of this container taken
at line 3-3 of FIG. 2;
.
FIG. 4 is an enlarged partial cross-sectional view il
lustrating the construction of the bottom part of this con
tainer;
FIG. 5 is an exploded partial cross-sectional view il
lustrating the relationship of the tubular closures and
of these rings 16 so as to terminate by extending com
pletely through and against the interiors of channels 17
formed in these rings. The ends 14 of the sack 12 are
then located Within these channels 17 by folding the pot
tions of the sack 12 adjacent tothese rings 16. The sack
12 and the closures 22 are then secured in place by'se
curing a retainer 26 within the channels 17 so as to force
tubular sack of this container to one another;
70 these members against the bottom walls of these channels.
FIGS. 6, 7, and 8 are perspective views illustrating the
A particularly suitable retainer 26 is indicated in FIG.
construction of the supporting rings of this container;
I 8 of the drawings. This retainer 26 consists of three
3,028,896
3
4
curved sections 28, each of which is provided with perfo
moving it from one supporting surface to another as,
for example, in lifting and moving it from a loading dock
rate ?anged ends 30, designed to be located immediately
adjacent to corresponding ends of the next adjacent sec
tion. Bolts 32 are used to secure the ends 30 of the sec
tions 28 against one another so as to “draw up” these CI
sections constituting the complete retainer 26 within the
channels 17 in order to ?rmly clamp the sack 12 and the
closures 22 in the locations shown. Preferably the sec
onto a railroad car or the like.
Whenever the container
10 is deposited upon a supporting surface the lowermost
ring 16 used with this container acts essentially as a base
serving to prevent the container from being easily tipped
over or from shifting.
When it is desired to discharge material transported in
the container 10, this container is lifted to an elevated
tions 28 of the retainers 26 are formed so as to have ap
proximately the same shape as the interiors of the chan 10 location above a bin or receptacle or the like designed to
receive such material through. At this point the lower
nels 17 so as to ?t tightly within these channels in order
most closure ring 34 may the twisted slightly so as to
to achieve as much clamping or holding action as con
in this manner, the overlapped ends 14 and 21 of the
sack 12 and the closures 22, respectively, are held by the
allow the weight of the material to push pins 44 out of
the slots 42 in the ring 34. After these pins have been
released from these slots the weight of the material will
‘rings 16 so as to provide extra thicknesses of fabric serv
tend to untwist the lowermost closure 22, opening the
veniently possible. When the container 10 is constructed
ing to reinforce against Wear.
The ends 33 of the closures 22 remote from the rings
16 are overlapped or folded over in a similar manner to
the ends 14 and 21 and are designed for similar reinforce
ment against wear with respect to closure rings 34 at
tached to them. Each of these closure rings 34 is of
about the same external diameter as the internal diameter
of the corresponding or adjacent ring 16 so as to be
bottom of the sack 12 so material can fall out of it.
During the time when this lowermost closure 22 is being
opened it may be shifted around slightly by manual ma
nipulation, and the speed at which it is opened may be
regulated in the same manner. As a consequence of this.
material from the container 10 may be easily directed to
a desired locale with a nominal or minimum amount of
capable of ?tting tightly within this corresponding ring.
di?iculty. After the bulk container It} has been emptied
in this manner it may be easily collapsed for shipment
Further, each of the closure rings 34 is preferably formed
of inner and outer cylindrical rings 36 and 38, respec
tively, which rings are adapted to be secured together
other materials for immediate shipment.
In FIG. 9 of the drawings there is shown a part of
back to a point of origin, or it may be used to convey
a modi?ed bulk container 58 of the present invention
through the use of rivets 44} or the equivalents in such
a manner that the ends 33 of the closures 22 remote from 30 which is essentially similar to the bulk container 16 pro
viousiy described. For convenience of description those
the rings 16 are secured in place between them so that
parts of the container 50‘ which are identical or substan
any material or substantial movement of these closures 22
tially similar to corresponding parts of the bulk con
with respect to the closure rings 34 is prevented.
tainer 10 are not separately described herein, and are
The outer ring 38 of each of the closure rings 34 pref
erably is provided with a bayonet joint type of slot 42
having a con?guration such as is commonly referred to
designated both in the following description and on the
as a dog-leg shape. These slots 42 are spaced equi
distant from one another around the exteriors of the
ployed or are not indicated. The container it} employs
substantially identical structures at both of its ends.
The container 59 utilizes support rings 52 which cor
drawings by the primes of the numerals previously em
rings 34 and lead from the ends of these rings 34 adjacent
to the corresponding rings 16. The slots 42 are adapted 40 respond to the rings 16 previously described. As indi
cated in FIG. 9, the rings 52 are of a generally L-shapcd
to receive small pins 44 forming parts of a bayonet type
cross-sectional con?guration and include circular walls
of connection, the other parts of which are constituted
54 to which there are attached peripheral flanges 56. in
by the slots 42. The pins 44 are attached to the rings
the complete container 50 two of these rings 52 are, of
16 so as to extend radially toward their interiors. During
the use of the complete container 10 these pins 44 engage 45 course, employed. They are disposed so that the ?anges
the slots 42 so as to hold the closure rings 34 with respect
56 are located so as to directly face one another.
to the rings 16. Thus, both the pins 44 and the slots 42
These rings 52 carry a retainer ring 58 corresponding
to the rings 26 previously described. These rings 58
serve as co-acting parts of what may be considered as
locking or holding means.
have an internal diameter corresponding to the external
In using the bulk container 10 it is preferred to ?rst 50 diameter of the Walls 54. The retainer rings 53 are split
and are provided with perforate terminal flanges 69
close the one of the ends 14 of the sack 12 which is in
adapted to be secured together by means of a bolt 62.
tended to be used as a bottom for this container. This
These bolts are used so as to hold the rings 58 against
is done ‘by twisting the closure 22 extending from this end
the ends 14’ of the sack 12’ and against ends 2-1’ of the
14 so as to form a twist type of “knot” 46. Because of the
many folds of material in such a knot, the knots 46 are 55 closures 22' so as to hold these ends in place.
The other ends 33' of the closures 22' are secured
by means of a small circular band 64 and screws 65 or
the closure ring 34 associated with it may be slid and
substantially watertight. After this knot has been created
then twisted within the adjacent ring 16 so that the pins
the equivalents to the interiors of closure rings 66, each
of which has an internal wall 68 and an end ?ange 70.
posite them. At this point the container 10 is adapted to 60 The ?anges 70 on the rings 66 carry Washers 72 of rub
ber or other equivalent sealing material. These ?anges
be used as by being ?lled with a material.
79 are disposed so that when the closure rings 58 are
During such a ?lling operation the eyes 20 are prefer~
44 on this ring slide within and engage the slots 42 0p
ably but not necessarily supported using conventional
equipment (not shown). Further, the uppermost closure
located as indicated in FIG. 9 of the drawings the washers
72 bear against the walls 54 so as to form a seal there
22 is preferably extended as indicated in FIGS. 1 and 3 65 with.
The closure rings 66 are adapted to he held in position
around a discharge spout or the like being used to ?ll
by means of pins 44’ extending from them into slots 42'
the container so as to act as a loading chute. After
formed in the walls 54. These pins 44’ are. for manu
the container 10 has been ?lled with a desired quantity
facturing and assembly reasons, preferably attached by
of material this uppermost closure 22 may be closed in a
similar manner to the manner in which the other closure 70 welding or equivalent techniques to radial cross bars 74
located within the closure rings 66. These cross bars
22 in this container was closed.
At this point the complete bulk container 10 is ready
74 are preferably secured to one another and to the
to be transported to where it is desired to use the mate
closure rings 66 by welding or similar procedures.
rial in it. During such movement the eyes 20 are, of
The use of the bulk container St} is essentially similar
course, preferably used in lifting the container 10 and in 75 to the use of the bulk container 10 previously described
3,028,896
6
5
in detail. For this reason it is considered unnecessary
to describe this use speci?cally in this speci?cation.
In the container 50 the pins 44' used are located on the
ends of said closures are located within said channels,
and including means for holding said bag and said closure
bearing against said bag and one of said closures within
exterior of the path in which material is moved during
the utilization of this container. Because of this these
each of said channels.
pins 44' are not apt to be damaged by contact with such
material. Also, with the container 50 the cross bars 74
may be easily engaged so as to twist the closure rings as
in use. Although it is not preferred, these bars 74 may
be utilized so as to support the entire container 50.
10
It will be realized that a variety of di?erently con
structed and ditferently appearing containers may be ‘
designed and built utilizing the features of this invention
embodied in the containers 1i) and 5% through the use
of conventional design ability. As an example of this, 15
the webs 24 or 24’ can be omitted from containers as
'
7. In a container, a closure which includes:
an outer ring having a channel formed on the exterior
thereof;
a ?exible tubular closure member and a ?exible bag,
an end of said bag and an end of said closure mem
ber located within said channel;
I
'
means for holding said end of said bag and said closure
within said channel;
a closure ring secured to the extremity of said closure
member remote from said outer ring, said closure
ring being capable of being ?tted within said outer
ring;
herein described, although this is not preferred because
when they are omitted their function is also omitted.
Similarly, rigid rods or the like can be substituted for
them, although this also is not preferred since such rods
hinder the collapsibility of the containers of this inven
tion. If desired, steel cables or the like may, however, be
substituted for these webs. Because of the fact that
means formed on said closure ring and said outer ring
structures of this invention are susceptible to such modi
?cations this invention is to be considered as being limited 25
8. In a container, a closure which includes:
an outer ring having a channel formed on the exterior
I claim:
1. A bulk container which includes: a tubular, ?exible
bag having ends; a support ring secured to each of sad
ends or" said bag, said support rings being of smaller diam 30
eter than the diameter of said bag; support means at
a ?exible tubular bag having an end located within.
for securing said closure ring to said outer ring
when said closure ring is located within said outer
ring whereby said closure member may be twisted so
as to form a knot and said closure ring may be
moved into engagement with said outer ring so as
to be held thereby.
only by the appended claims.
I
a
>
'
thereof;
said channel;
a ?exible tubular closure member having ends, one
end of said closure member being located within
said channel between said end of said bag and said
tached to said rings so as to extend between said support
channel, said closure member extending from said
rings within the interior of said bag, said support means
being shorter than said bag; and closure means for closing
the interiors of said support rings at the ends of said bag. 35
2. A bulk container as de?ned in claim 1 wherein said
support means are elongated strips of ?exible material
and wherein said strips are spaced equidistant from one
another around said support rings.
outer ring in the same direction as said bag and
being bent so as to extend back through the interior
3. A bulk container which includes: a tubular ?exible 40
bag having ends; a support ring secured to each of said
ends of said bag, said support rings being of smaller diam
eter than the diameter of said bag, said bag being gath»
ered adjacent to said support rings so as to be reduced to
the diameters of said support rings at said ends; a tubular 45
?exible closure secured to each of said support rings so
as to extend therefrom and from said bag, ‘each of said
closures having an end located remote from said support
rings, said closures providing access into the interior of
said bag through said support rings; a closure ring secured 50
to the end of each of said closure remote from said sup
port rings; and means formed on said closure rings and
said support rings for securing said closure rings with
respect to said support rings and support means connect
ing said support rings and extending through said bag,
said support means being shorter than said bag.
4. A bulk container as de?ned in claim 3 wherein said
means comprise pin means ‘located on one of said rings
55
‘member remote from said outer ring, said closure
member being capable of being ?tted within said
outer ring; and
co-acting means for securing said outer ring and said
closure ring to one another when said closure ring is
located within said outer ring, said means being lo
cated on the surfaces of said rings which are located
adjacent to one another when said rings are secured
to one another whereby said closure member may
be twisted so as to form a knot and said closure ring
may be moved into engagement with said outer
ring so as to be held thereby.
9. A bulk container which includes:
a tubular, ?exible bag having ends, a support ring
secured to each of said ends of said bag, said sup
port rings being of smaller diameter thanthe diam
eter of said bag, ?exible elongated strips of material
attached to said rings so as to extend between said
the other of said rings, said pins being adapted to ?t
within said bayonet slots, whereby said closures may be
twisted and said closure rings may be secured to said
support rings so as to close the ends of said bag to said
References Cited in the ?le of this patent
support rings.
5. A bulk container as de?ned in claim 3 wherein said
support means comprise ?exible strips of material extend 65
ing between said support rings, said strips of material
being equally spaced from one another.
exterior thereof, and wherein said ends of said bag and
a closure ring secured to the extremity of said closure ‘
support rings within the interior of said bag, said
strips being spaced equidistant from one another
around said support rings and being shorter than
said bag; and
means for closing the interiors of said support rings.
so as to extend therefrom and bayonet slots located on
6. A bulk container as de?ned in claim 3 wherein each
of said support rings includes a channel formed on. the
of said outer ring;
end structure means for holding said end of said bag
and said end of said closure within said channel;
UNITED STATES PATENTS
1,431,918
1,914,370
2,314,639
Arthur ______________ __ Oct. 17, 1922
Hutchison ___________ __ June 20, 1933
West et a1 ____________ __ Mar. 23, 1943
65,639
Switzerland __________ .._ June 2, 1913
FOREIGN PATENTS
70
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