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Патент USA US2113978

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' April 12; 193811
J. w. ‘BE‘LL '
Filed Oct._ 51, 1933‘
John W. B el I v
Patented ApnlZ, 1938
,; [ 2,113,978
‘ ‘ ‘ I
‘omen, STATES
‘ a
H ‘
Bell, Toronto, Ontario, canada‘yassimor.
of one-twentieth to MY. Bell, St. Oath
I Application
outta-'31, 1e33, S‘erialrNo.iv 696,018?‘
j >5 Claims. (01. sci-‘171)
My invention relates tol‘packaging rpulverous product to fresh air with "the result that unless
‘ . ‘or ground products and particularly to packaging .
coffee forretail distribution. ,
the“ whole package isv used promptly the ‘quality of
the co?ee gets worse andyworse as the package‘ is
' 'I aim'by my invention‘ tol‘provide a means
‘whereby coffee may be distributedby‘retailto
Another attempt consistsinsealing the‘. roasted
¢consumers“ln convenient ‘packages without sub blended andpulverizedcoilfee‘in containers from
stantial deterioration due‘ to exposure to the air which the air ‘has been‘ evacuated or replaced by
‘and conveniently used: ‘by the‘ consumer in’, small ‘an inert "gas. ‘ This methodlikewise has the ‘dis
, quantities as desired" over an~extended period of advantage that‘as soon'as'pthe'packageis opened
‘ “16 time‘ without-material‘ ‘deterioration'whilef the the voidsare immediately ?lledwith‘air and‘yde- 10,
‘ package is being‘used' up. ."AIai‘m, to accomplish terloration in the hands '01‘ “the consumer takes
,_ . ‘
“the above purposes and-‘also‘provide aipackage ‘ place as previously mentioned. I
. which is strong, compact,*'attractive?
Iofllow ‘
“15f It is recognizedthat th'evaroma“ 'and‘flavoroof
(roasted coffee are due "to the‘ presence of?an es- I
‘My invention on‘the, other hand-not only pro
vides a means ‘whereby ground coffee may reach
the consumer witha minimum of deterioration 15‘
but also assures that when the consumer‘ pur
‘sentialoilif 0n exposure to the air this oil which chases a package, it may be conveniently ‘used in
vcontains‘ a free fatty acid, ‘takes ‘up oxygen which‘ “small‘quantities from time to time without‘ma: .
‘causes it to become rancid, destroyingthe aroma terial deterioration of the‘ remainder ti'll'thev pack
andl‘?avo‘r and causing it to become unpalatable.
The degree of deterioration‘ is'a, function of the
time‘; of exposure‘of the cofie'e't'o theair, the ‘ex- ‘
‘ tent of surface exposedpand’the freedom of‘ cir
‘ , culation 'of“ freshair‘over ‘the exposed‘ surface.
To‘ avoid oxygenation of roasted coiIee and conse
quent'deterioration' of theipro'duct it ha'sebeen a I
cust‘oma'ry‘practice for a‘ consumer to buy un
roasted coilee‘bearfsfandroast and grind ‘them in
his own home. Toaa‘voi‘d the‘vrdi?’icultiesof home
roasting another practice has‘ been, for'the re,—'
‘taller to stock the‘ roasted coifee beans, and grind
them for the customer when sold tohim. ’ This
does not‘remove the burden "on theyretailer‘to‘
keep his stock fresh“ and ‘moreover‘v-the ground
“ '3 35 qujantity‘in the handsjof the purchaser‘ rapidly
deteriorates ‘as it‘i's' being-used" up. The com-‘
‘ ‘ mercial desirability of distributing GO?ee Lin ‘its
roasted ground form whereby“ it may ‘be/uni
‘ formly roasted and blended‘vby a manufacturer.
1] 4o has led‘to various attempts to‘ offset the rapid
deterioration which takes place when thefco?ee
‘is in its ground form ‘with ‘the consequent en‘or-l
mous increase in surface exposed to the air.,' “One
such‘attempt consists in the roasted blended and
. ‘45 ground ‘coffee being sealed,‘ in j containers im
“ “ ‘ pervious to the air and distributed'to retailersin
this form. .A large amount ‘of air is present in
. the‘ voids‘ and deterioration‘vtakes place to some
“ exam.- Some'manufacturers take precautions by
50 way ofsupervision of the "age of stocks, kept by
the ‘retailers to assure] that: their branded, prod-v
‘uctswhich have become s'talejare not sold to' the
‘ ‘
consumer,‘ This method, has "no e?ect'_,.o_n the
' rapiddeterioration offthe coffee‘ when the"coné
‘ ‘ I ‘55 sumer'open's‘ the sealed package and exposes the
age has beenifcompletely consumed.‘ ’ My inven
tion also provides'a package whichis‘ineirpensive‘,
readily handled, ‘ compact and-,"atqtractive
. ap8
pearance. ‘ ‘ Further advantages of “_ my invention
willj become apparent as the description proceeds,
‘In accordance" with my invention I compress 25
‘the ground coiieeinto an‘ elongated cylindenim
sert‘ the cylinder intoa seamless tube‘of tough,
'?exible'material‘ which is ‘impervious to air‘and
moisture, and w'hichmay be readily outwith a
The compressed coffee expands slightly 0‘
which with the shrinkage Oil-the ‘tube if desired
and aslater described, ?lls the tube very, tightly.
The ends of the cylindrical unit thus formed are
protected preferablyby capsof ‘metal or‘otl'ler ‘
material which frictionally engage the-outer walls 35 i
of the cylinder.‘ _
\ In the drawing Fig. 1 shows diagrammatically
. an apparatus whereby my method of‘, packaging ,
coffee maybe carried out, some of the partsbeing
shown in cross section; Fig.‘ 2 shows a packed ‘40
unit as prepared‘ by the apparatus of Fig. 1‘ and
,Fig. 3 shows in cross section the unit of Fig.2
completed by the addition of end‘ caps‘. “ ‘_ ‘Referring to‘the drawing i0 represents a mul
tiple mold box having a plurality of cylindrical 45
molds ll‘v open‘fatvbo‘th ends." The mold box is‘
placed on the'?at charging table 12 “and ‘?lled .
with" freshly ‘ roasted,‘ blended‘ and ' ground ‘coffee.
.The mold box isthen moved ‘alongthe’surface of
the table till‘ it is in T the position indicated‘in 50
the drawing beneath the rams 13; ‘The rams‘ are
part of a‘hy'draulic‘press generally indicated‘ at .
l4 and which is suitably supported above ‘the
charging table 12. A hood IS‘thrQughthetop ofv
which the rams are slidable, is loweredjover the 55
mold box. A suitable gasket is provided between shelf space than packages of ground co?ee in its
the mold box and the hood to assure an air tight
joint. The air is now withdrawn from beneath
the hood through the exhaust line i6. As the
coffee in the mold is in loose pulverized form, the
loose form. Due to the evacuation of air in pack
aging and the highly compressed state little air
is present in the package to cause deterioration.
The impervious outer shell and tightly ?tting cap
air 1518.150 withdrawn from the voids or is re-_ prevents the circulation of further air. The re—
duced to the same pressure in the voids as it is in
sult is that my package can be stocked by retail
the chamber. When the‘ degree of exhaust has ers for a longtime without material deteriora
reached-the desired stage the hydraulic pressv is tion. The most'afirnportant advantage, however,
operated and the rams i3 descend compressing is that when purchased by the consumer, he may 10
the coffee in the molds. A pressure of about use the'co?ee a small ‘amount at a time over an
2000 poundsper square inch will compress the extended period with little deterioration of the
coffee‘ from its loose powdered form to a compact, remainder of the package between times. In
cylindrical unit of about forty percent of its use the consumer removes the protective cap and
15 original volume and having a small proportion of cuts o?-the amount required. The coffee out 15
voids. As the compression starts any air remain-j ~ of the package is readily crumbled to its original - ing in the loose coffee will be trapped to some ex-y ‘ground form. The material of the side wall of
tent and compressed. Preferably the, degree of. the container is cut off with the co?‘ee by means
exhaust used should be such that the pressure of , of the ordinary household knife and without the
20 the air in the voids of the compressed bricks is necessity of any special tool. When the quantity 20
After compression
the rams
l3. are elevated
and the hood raised. The charging box is now
desired is removed the exposed surface of the re
mainder of the package is hard and compact and '
air cannot penetrate into ‘the bulk of thejremain
moved to discharge position shown in the draw
ing coffee. The lid is pressed down on the short
25 ink] in dotted lines to the right of the charging .ened package,.making a tight joint with the side.
position.» In this position the inoldsare in‘reg and preventing the circulation of fresh air over
the newly. exposed top surface. The consumer
ister with‘ a seriesof openings ll‘lfin the work ta
ble.‘ Beneath th‘elwork table in this position‘: is (can in the above manner, continue to use_the
a removable discharge tray i8 having depending‘ package till it is all used. Any small deteriora
30 therefrom a plurality of“ tubes 19 open at both ‘ tion which takes place, will be con?ned to a thin 30
ends, corresponding in .number to the molds.
When the tray is in the position illustrated the
tubes I! are in register with the openings. l1.
Each, tube has a container 20 tightly ?tting hav
ing one closed end.‘ The hydraulic discharging
mechanism’ generally indicated ‘by’ 2 l ,_ is now op
erated and its rams 22 enter theimolds I i , engage
thecompressed units and projec, ‘them through
the openings I ‘I in the, work table ‘i2 into the
tubes. IS. The compressed'unit then {encounters
the‘closed end" of thecontainer 20§QFurther
layer. on the‘newly'exposed top and the bulk of
the remaining product is not a?ected. If the
package‘ is usedfdaily the deterioration is not
enough to be noticeable. If, however, the pack
age is left for an inordinately long time, a thin
layer maybe scraped from the upper surface and
discarded when the package is opened. Thus
any deteriorated coffee in these circumstances is
con?ned to .a de?nite limited surface where it
can be removed with little waste‘ and leaving the 40
balance unaffected.
movement of theT'rams “then expels'the com
' As I have described my invention the air is
pressed unit from the loading tube carrying the evacuated from the loose co?ee before compres
container with and around 'it. The unitds'then'v sion. The higher the degree of vacuum‘ ob
tained, the better, but in the commercialpackag
45 conveyed away and dried in a current ofwarm
ing an absolute vacuum is not obtained and some
The material which I prefer to use for the con-. small pressure’ of air remains. This amount of
taining tube is a seamless tube of transparent, air is so, small that co?ee packed in this manner
cellulose product such as cellulose acetate which‘ hasjthe zadvantages heretofore recited. How
is now available commercially ‘in'tubular rorm; 'ever, to further guard against deterioration, I
This product is tough and ?exible,1is impervious-1,:vvmay by ‘suitable-means before the co?ee is com~
to air‘and water and‘is easily outwith ajknife. *pre'ssed, vdisplace the air present in the voids by
Before loading the container tubes vongtheldis carbondioxide or any gas which is not deleterious
charge tubes they are preferably soakediin‘a mix ,to the. coffee. In this event it ‘isdesirable that
55 ture of water and glycerine, which causesvthem V the pressure of gas be reduced to such an ex
to swell somewhat. When the compressed‘ coffee Jtent'ithatjfwhen‘ co?'ee is‘compr'essed .the gas
unit is ejected from the discharge tube with'ther ‘trapped-Lin the voids-and consequently com
container around it, the coffee slowly swells. ' pressed;
“will, have va. residual‘ pressure approxi-v
The containing tube also "shrinks when drying
60 which, in conjunction with the swelling of the
The p'acka'geinaccordance‘with my invention, 60
coffee, causes the ?exible containing tube to very is attractive inappearance‘ which is‘ a distinct ad
tightly embrace and con?ne the coffee.
vantage‘, as this. market is_ highly‘ competitive.
Fig. 2 illustrates the coffee package as delivered
from the unloading machine. To each end of
65 the package I apply a suitable protective cap 24
as illustrated in Fig. 3,‘which shows a cross._sec
tion of the package of Fig. 2 with caps applied at
upper and lower end. The cap '24has a down
wardlv depending ?ange 25 which engages the
70 side wall of'thepackage. An inwardly extending
bead. 26_ provides aline contact. This provides a
It'is also strong and-admits of handling-in'the
ordinary manner. 7 As 'thepa‘ckage vis relatively
cheap, coffee can be ,ret‘ail‘ed in small size pack 65
ages, for exampleph'alf-pound'andksm‘aller, with
out unduly enhancing the "saleprice. . >'
In the process ‘as illustrated and , described
above, the size of ‘mold, used is such as to pro
duce a single unit with each ram. It'maybe de 70
sirable to ‘so proportion the size of the molds that
tightioint which prevents the ingress of air to
the compressed unit ejected from the discharge
the exposed top ofthe compressed unit.
Packages of coffee in-accordance with my in
tubes embraced with its container may be of
su?lcient length thatit may be subdivided later
ventionare compact, occupying less storage and: by cutting into shorter lengths, each of requisite
proportions to form a suitable package. I have
found that a‘suitabie size for pound packages‘ is
one ‘and seven eighths inches ‘ diameter.
length of apound package of this diameter would
eleven inches. For half pound and
‘ smaller sizes, I found one and ?ve eighths inches
a‘ suitable diameter.-
in connection with packaging coffee, I do not
desire to be limited thereto, except as de?ned in
the appended claims, asin some of its aspects
my invention may ?nd use with other materials
silient ?ange having an inwardly directed bead
engaging the outer wall of‘the unit,
3. A package of ?nely divided, non-coherent" '
and normally bulky material comprising an elon
gated cylindrical body of said material com-g CI
pressed to at least one-half of ‘its normal volume
and tending to expand upon the release of ,con
“ While I have described my invention in detail
What I claim as new and desire to secure by
Letters Patent of the‘ United States is: .
1. A package of ?nely divided, non-coherent
and normally bulky material comprising an elon
?ning pressure, said body being con?ned in an
insoluble tube of tough material which shrinks
upon vbeing dried, is impervious to air, easily cut 10
and of ?lm-like thickness, whereby said body is
held under compression to form a hard solid
unit, and closures for the end of said unit.
4. A package of ?nely divided coffee compris
ing an elongated cylindrical body of said co?ee'
compressed to at least one-half of its normal
volume and tending to expand upon the release
‘ gated cylindrical‘ body ‘of said ‘material com-‘ of con?ning pressure, said body being'co'n?ned
pressed to at least‘ one-half of its normal volume in a tube of tough material of ?lm-like thickness‘
and tending to expand upon the release of con
which‘is impervious to air, easily cut and com 20
?ning pressure, said body being con?ned’ in an posed of a cellulose product, whereby said body is
‘insoluble tube of tough‘material which is im
held under pressure to form a hard solid unit,
pervious to air, easily cut and of ?lm-like thick
and closures for the end of said unit.
ness, whereby said body is held under compression‘
5. A package of ?nely divided coffee compris-‘
ing an elongated cylindrical body of said co?ee £5
compressed to at least one-half of, its normal
2. A package of ?nely divided, non-coherent ' volume and tending to expand upon the release
and normally bulky material comprising an elon
of con?ning pressure, said body being con?ned in
‘to form a hard solid unit, and_closures for the
end‘ of said unit. “
‘ gated ‘cylindrical body of_ said material com
pressed to at least one-half of its normal volume
r andtending to expand upon the release of con
ning pressure; said body being con?ned in an
insoluble tube of tough material which is im
ipervious to air, easily cut and or ?lm-like thick
whereby said body is held under compression
has ‘toness,vform
a'hard solid unit, and closures for the
i ‘ ‘end of said unit, one of said closures comprising
i a metal cap with a downwardlyextending re
a tube of tough material of ?lm-like thickness
which is impervious to air, easily cut and come 30
posed of a cellulose product, whereby said‘ body
is held underpressure to form a hard solid- unit,
and closures for the end of said uni-t, one of said
closures comprising, a metal cap with a down
wardly extending ?ange having an inwardly di 35
rected bead engaging the outer wall of the unit.
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