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Патент USA US2406678

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Aug. 27, 1946.
J. D. GERAHTY
CONTAINER AND METHOD OF MAKING SAME
.
2,406,678
' - ,Filed March 8, 1945
INVENTOR;
Patented Aug. 27, 1946
2,406,678
UNITED STATES PATENT OFFICE
CONTAINER AND METHOD OF
MAKING SAME
James D-. Gerahty, New’ York. N. Y.
Application March s,_ 1943, Serial No. 47,78,386
9 Claims.
(01. 18-47;.5.)
1
2,
Thlsinvention relates to containers generally
scription thereof proceeds, the invention consist.
and has for its principal object the production
of arcontainer adapted to be expeditiously and
economically manufactured and to be employed
hereinafter more particularly described and then
as a substitute for or to supersede those now
speci?ed’ in the claims.
well-known and constituted of metal, ?ber, paper,
glass or other materials and adapted ‘for pack
In the accompanying drawing illustrating a
practical embodiment of the invention:
aging,carrying, storing or dispensing a variety
‘ Fig. Us a section taken through a cylindrically
ing- in the novel container and article of man
ufacture and the method'of producing the‘same
7'
. 1
'
shaped fabric or ?bered bag: forming the founda
“Brie?y ‘stated,’ the inventionrconsists in and 10 tion or reinforcement of the container showing it
of articles?
.
.
'
reinforcement having an open mouth and closed
held suspended by a suitable vholder prior to dip
ping or immersion in theliquid resin.
Fig. 2 is a section taken through the liquid
at its bottom and then impregnating‘ and/or coat
resin tank.
v has for its objects the provision of a cylindrically
formedonother shaped ?bered foundation or
ing said, foundation with a suitable resin and 15
subjecting thefoundation so treated to heat of
a suf?cient degree toharden and/or polymerize
the resin and produce a container having light
'
V
Fig. 3 is a horizontal cross-section on the line
3-—3 of Fig. 1.
'
‘
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Fig. 4'is‘a' section taken through a mold which
may beemployed for heat treating the founda
tion after its impregnation with the resin.
Fig. 5 is a perspective view of the container
ness in weight, strength, and rigidity while at '
the same time being resistant to fracture, or 20
breakage.v The container constructed vaccording
showing its untreated end folded to proper posi
to the‘ invention also will be found to be leak
' tion for hermetically sealing the container. .
proof, air-tight, impervious to moisture and re
Fig. 6 is a front elevation (partly in section)
sistant to the formation of bacterial growth.
showing the sealing operation.
' I
In the construction of the container of the in 25 Fig. 7' is a perspective view of the completed
vention it, is preferred to employ as the ?bered
foundation, a fabric, either woven, knitted, felted
container.
matted or “picked” in any well-known manner,
drawing: 1
from ?bers, ‘either mineralhorganic, vegetable
or synthetic. The ?bered foundation, for in.
stance,‘ may be of cotton, wool, worsted, ramie,
jute, kapok, linen, natural silk, rayon. viscose
casein, cupro ammonia synthetic. ?bers ethyl cel
A eylindrically-f'ormed or other geometrically
formed ?bered bag-like foundation or reinforce
lulose, methyl cellulose, aceto butyrate cellulose,
propionate derivatives of cellulose, or ‘any other
material equivalent to those mentioned and hav
ing similar characteristics.
‘
Any number of a long list of resins suitable
for the impregnation and coating of the ?bered
foundation may be employed and it. is thought
to be unnecessary to catalogue them. A phenolic
liquid resin, however, without limiting the in
vention to its use, will be found to be an ideal
one for the purpose, such phenolic resin being
the product of a reaction of phenol/and any
suitable aldehyde. In many cases, also, the use
of melamine as the resin will be found to be very
desirable. The impregnation and/or coating of 7
the ?bered foundation or fabric may be effected
,
V
Referring in detail to the several ?gures of the
'
'
r
ment closed at its lower end and'havingan open
mouth, as illustrated,_' is indicated at II). This
foundation is of the same con?guration and of
substantially the same diameter as the completed
container. Other con?gurations, obviously, may
be employed, depending on the nature of the ?n
ished product. For the purposes of holding said
bag for purposes of impregnation in a liquid resin,
a suitable. holder has been provided comprising
a body It having upper and lower plates 12 and
I3 respectively supporting therebetween a plu
rality of radially directed, pointed and movable
holding elements 14. adapted to engage against
the ‘inner side of the ?bered foundation and hold
the mouthv thereof‘ in disputed position as shown
in Fig. 3. - The body I marries a shaft 15 extend
ing upwardly therefrom and said'shaft ‘carries an
actuator Hi having a lower ?ange or plate [1 r0.
conveniently by a variety of suitable mechanical
tatably engaging the upper plate l2- and provided
instrumentalities as’ by dipping, soaking, spray
with radial slots l8 therein ’ receiving pins‘ l9
mounted on the holding elements l4. Obviously,
and on the foundation or fabric.
'
rotation of the actuator H5 in thev proper direction
will reciprocate the holding elements inwardly or
.Other'and further objects and’ advantages of
the invention will become apparent as the de 55, outwardly as the case may be because of the pin
ing, pressing or forcing the resin through or into
2,406,678
3
and slot connections between the parts just de
scribed.
After the fabric foundation I0 is supported by
the holder H with the mouth of the foundation
distended as shown in Fig. 3 the foundation is
lowered into a tank 29 containing heated liquid
resin 2|, said tank being provided with a steam
jacket 22 to which inlet and outlet steam pipes
23 and 24 are provided to permit the resin to be
4
also be understood that it is within the scope of
the invention to effect the hardening and/or
polymerization of the resin chemically by the
utilization of catalysts of various types and with
or without the employment of heat. After the
hardening and polymerizing operation has been
effected, a cylindrical container as shown in Fig.
5 is produced having a hardened main body por
tion indicated at 42 and an upper end 43 integral
with
the body but which has not been subjected
10
The
heated and retained in heated condition.
fabric foundation thereupon becomes thoroughly
impregnated with the resin which not only enters
the interstices of the fabric to close them but
to the hardening action so that it remains pliable
and ?exible.
For the purposes of closing and hermetically
sealing the container, diametrically opposed por
15 tions of the pliable and ?exible upper end 43 are
either side of the foundation_
creased or folded inwardly to form triangular
After impregnation, the fibered foundation is
portions
46 the apices of which lie in alignment
slipped over the hollow male member 25 of a
and adjacent to each other. Such creased and
molding machine with which it‘ closely inter?ts.
folded upper end is folded over on itself as shown
Said male member extends upwardly through a
suitable opening in a table 26 and is supported by 20 in Fig. 6 and is held ?rmly and tightly between
the heated jaws of a clamp which are indicated
a shaft 21 slidably received by a bearing 28
diagrammatically at 45 in said ?gure. Said jaws
which is fastened to the arms 29 of a spider which
are subjected to pressure and intense heat with
is fastened to and depends downwardly from the
the result that the upper folded end of the pliable
table 26. This permits adjustment of the ver
tical position of said male mold member 25 and 25 and flexible portion 43 itself is hardened and/or
polymerized to effect a hermetically sealed clo
it may be held in any desired position of adjust
provides a coating of minimum thickness on
ment by means of a set screw 30.
Said hollow
sure for the containerconstituting a portion of
the container. per se. After the container is
male member 25 is provided therein with a steam
sealed in the manner explained the upper pliable
coil 3| for heating purposes said coil being con
nected by an inlet pipe 32 with a source of steam 30 and flexible portion 43 carrying the sealed end
with it may be pressed downwardly as shown in
supply and being also provided with an outlet
Figure
7. To open the container the upper por
pipe 33. Admission of steam to the coil may be
tion 43 thereof is again pulled upwardly into the
controlled by a valve 33'.
position shown in Fig. 6 and a knife may then
The hollow female member of the molding ma
be
used to cut through said ?exible portion 43, the
‘chine is indicated at 34. It is provided with a
upper edge of the hardened and polymerized por
chamber or jacket 35 for receiving a steam coil
tion 42 acting as a convenient guide for the knife
36 connected by an inlet pipe 31 with the same
for accomplishing that purpose.
source of steam supply and also connected with
While heretofore it has been proposed to mold
an outlet pipe 38. Said female mold member is
a container or similar device from polymerized
?anged as at 39, said ?ange being of a size per
resin, these devices have not proven to be en
mitting it to inter?t with a shouldered portion on
tirely satisfactory because of their brittleness and
the table 26 as illustrated. The lower end 40 of
consequent susceptibility to breakage and for the
said female mold member also extends within the
further reason that the employment of a relative
opening which receives the male member and
ly large amount of resin is necessaryto provide a
inter?ts with the wall of said opening so as to
wall of sufficient thickness to enable them to
insure a close and firm but removable engage
properly perform the function for which they are
ment between the parts. If so desired the ?ange
intended and which‘ obviously, adds to their
39 of the female member may be provided with
weight materially, of necessity. These disad
suitable handles 4! for purposes of removal and
vantages have been overcome by means of the
5
O
placement.
.
present invention as the employment of a fabric
After the impregnated and coated fabric or
or other ?bered foundation or reinforcement in
foundation has been slipped over the male mold
the structure not only acts as a strengthening
member 25 of the molding machine, the female
membertherefor
but permits the utilization of a
mold member 24 is supported in proper position
relatively small amount of resin in the manufac
on the table 26 as shown in Fig. 4 with the
ture of the device thus making for economy and
female member receiving the male member and
permitting a very rapidcuring or hardening of
the treated ?bered foundation being interposed
the
resin. The container of the invention, fur
between both members and in close relationship
thermore, is not only materially stronger than
thereto. When in that position, it will be noted
the old type molded entirely of polymerized resin
that a certain portion of the ?bered foundation
but it is also shock resistant and resistant to frac
is unsupported and extends freely downwardly
ture or breakage which characteristics are not
from the table 26 so that it will be unaffected by
the hardening and/or polymerizing operation.
That operation may be effected by admitting
steam to both coils to subject both mold members ‘
to suiiicient heat to harden and/or polymerize
possessed by the old type just referred to.
It will be understood that the invention is not
limited in its application to containers per se but
various other devices having a number of differ
ent uses may be constructed in accordance there
the resin with which the ?bered foundation is
with and these devices may have a plurality of
impregnated and coated. This produces a strong
different and varying con?gurations. It will be
and rigid structure. Obviously, in some cases, it
may be found unnecessary to heat both mold 77 further understood that instead of hermetically
sealing the end of the container in the manner
members, the heating of one only being sufficient
described, it will be found desirable in some cases
to produce the desired results. Also, the employ
to harden and/or polymerize the impregnated
ment of other heating means may be found de
and coated foundation or reinforcement through
sirable in some cases as, for instance, electric
heating devices of, various . characters‘, ll? will ,75 out its length'and to employ a separate closure
5,406,673
‘In?v cover for .the body 7. itself,w wtiolfs‘tijiict'ecl in -_t_he
same'manner as the: body, and‘which'shall be
adapted to‘ snugly and frictionally inter?t with
said body and, if so desired, to be attached‘there;
to in‘ any desirable manner. Containers of this
type will; be found useful for packaging and ship
ping awidevariety of commodities.
'
The invention claimed is:
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_
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. 1“. ‘The method of manufacturing a container
consisting in'providing a ?exible bagelike ?bered
portiomthe upper edge~ of ~‘said‘body"portion pro‘
viding arigid guide for a' cuttingto'ol for cutting
‘and separating th'e'intermediate' and end, pot
tionsfrom the body portion,
' '
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1
f
' '
1
1 5. m a" '_'ontainer for , holding and shipping
commodities, a bag-like foundation of porous,
?bered fabric comprising three integral portions
to‘ wit: a rigid 'body' portion resistant vto bending
and'folding and having a closed bottom, a pliable
and ?exible ‘intermediate portion and a ‘hermeti
foundation closedatone end and having an open
cally sealed end'portion folded over'on itself and
mouth, impregnating, and coating both surfaces
providing a closure‘for'the- containerhthe upper
of _'sai_d foundation with‘ a thincoating, of-liquid
resinv adapted to 'be hardened , ‘ and “polymerized
edge of sa'id'r'igid ‘body 'portion providing ‘a, ‘cir
cumferential guide for a cutting tool for cutting
by the " application of , heat, subjecting a, portion 15 and‘ separating-the intermediate: and end por
‘of treated foundation to the action of heat to
harden, and polymerize the resin and produce a
rigid'structure'of substantially the same con?g
tions' from 'the'body portion, a? thin coating of ‘
hardened and polymerized liquid resin covering
the-body‘andend portions and enterin'g’and'close
uration as the ?bered ‘foundation to form the
ing the interstices ‘thereof and a thin coating of
body of the container while retaining the balance 20 unhardened liquid resin covering the intermedi
of the foundation in ?exible condition and subse
ate ?exible portion and entering and closing the
quently subjecting a portion of said balance to
interstices thereof.
the action of heat to harden and polymerize the
6. The method of manufacturing 9, container
resin and provide a closure formed entirely by a
consisting in providing a porous, ?exible, bag
portion of the coated foundation per se.
25 like ‘fabric foundation closed at one end and hav
v2. The method of manufacturing a container
ing an open mouth, impregnating and coating
consisting in providing a ?exible bag-like fabric
both surfaces of said foundation with a liquid
closed at one end and having an open mouth, im
resin adapted to be hardened by the application
pregnating and coating both surfaces of said
of heat whereby the pores of said foundation will
fabric with a liquid resin adapted to be hardened
be closed by said resin, subjecting a substantial
and polymerized by the application of heat,
portion of said coated foundation to heat to
subjecting a substantial portion of said treated
harden and polymerize the resin of said sub
fabric to heat to so harden and polymerize it and
stantial portion and produce a rigid body portion
produce a rigid structure forming the body of
of the container of substantially the same con?g
the container, folding the end of the treated
- uration as the original foundation and resistant
fabric adjacent its mouth and subjecting said ,
to bending and folding and to provide a circum
folded end to the action of heat to harden and
ferential edge on said body portion acting as a
polymerize said folded end and to hermetically
‘seal the container while leaving that portion of
the impregnated fabric intermediate the body of
‘the container and its polymerized folded portion
unhardened and ?exible.
the coated foundation in ?exible condition, th'en
subjecting a portion only of said ?exible end to
heat to harden and polymerize the resin and to
guide for a cutting tool while leaving an end of
provide a closure for the container formed en
tirely by the coated foundation while leaving that
consisting in providing a ?exible bag-like fabric
portion of the coated foundation adjacent the
closed at one end and having an open mouth, 45 aforesaid circumferential edge and intermediate
impregnating and coating both surfaces of said
the body and closure in ?exible condition.
3. The method of manufacturing a container
fabric with‘ a liquid resin adapted to be hardened
7. The method of manufacturing a container
and polymerized by the application of heat,
mounting a substantial portion of said impreg
consisting in providing a ?exible bag-like ?bered
foundation closed at one end and having an open
nated fabric over the ‘male member of a molding 50 mouth, impregnating and coating both surfaces
machine and in close engagement therewith
of said foundation throughout its length‘ and in
While leaving the portion adjacent its mouth free
cluding its closed end with a thin coating of liq
bringing an inter?tting female member of the
uid resin adapted to be hardened and polymerized
molding machine over said male member and in
by the action of heat, heating a substantial por
close proximity with said-substantial portion of 55 tion of the impregnated and coated foundation
the impregnated fabric, supplying heat to one of
including its closed end to so harden and poly
said molding machine members to thereby
merize the resin and to provide a, rigid body and
harden and polymerize the resin and produce a " end for the container resistant to bending and
rigid body structure for the container having
folding while leaving the balance of the coated
substantially the same con?guration as the fabric 60 foundation in ?exible condition and subsequently
and subsequently folding said free portion adja
heating and applying pressure to that portion of
cent the mouth and subjecting it to heat to
the coated foundation adjacent the open mouth‘
harden and polymerize it and provide a closure
to provide a closure for the container constituted
formed entirely by the coated fabric per se.
entirely by a portion of the coated foundation
4. In an article of manufacture, a foundation
of porous, ?bered fabric comprising three inte
gral portions'to wit: a rigid body portion resist
ant to bending and folding and including the
65 per se.
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8. The method of manufacturing a container
consisting in providing a ?exible bag-like fabric
closed at one end and having an open mouth,
bottom of the container, a, pliable and ?exible ' . impregnating and coating both surfaces of said
intermediate portion and a rigid end portion con 70 fabric with a liquid resin adapted to be hardened
stituting the closure for the container, a thin
coating of hardened and polymerized liquid resin
covering both surfaces of said body portion and
end portion and a thin coating of unhardened
liquid resin covering said ?exible intermediate
and polymerized by the application of heat,
‘mounting said impregenated fabric on the male
member of a, molding machine in such manner
that a substantial portion thereof including the
closed end is in close engagement ‘with’ said male
2,406,078
7
8
member while leaving thatzportion adjacent its
and polymerized by the application of'heat, sub
month free, providing a female member for the
molding machine, bringing said male and female
fabric to the heat-action of a molding machine
members into operative relationship with each
other with said female member in proximity to
said substantial portion of the impregnated
fabric, supplying heat to one of said members to
harden and polymerize the resin on the aforesaid
substantial portion to provide a rigid body for
the container and subsequently closing and her
metically sealing the mouth of the impregnated
fabric by applying heat and pressure to that
portion of the impregnated fabric adjacent said
mouth.
9. The method of manufacuring a container
consisting in providing a ?exible bag-like fabric
closed at one end and having an open mouth,
impregnating and coating both surfaces of said
fabric. with a liquid resin adapted to be hardened
jecting a substantial portionof said impregnated
having male and female members by mounting
said impregnated fabric including its closed end
on the male member and in close engagement
therewith while leaving a portion thereof free
and ?exible and disengaged. ‘from said male mem
ber, bringing said male and female members into
operative relationship, supplying heat to one of
the members to harden and polymerize the resin
on said substantial portion and to provide a rigid
body for the container resistant to bending and
folding and. subsequently sealing the aforesaid
open mouth by applying heat and pressure to the
impregnated ?exible fabric lying adjacent
thereto.
_
JAMES D. GERAHTY.
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