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Патент USA US2405751

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J. `MGMEÍÈKJAiä/IIN
APPARATUS FOR BREWING .COFFEE
Filed Deo. 25, A17942
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2,405
Patented Aug. 13, 1946
2,405,751
UNITED STATES
ATENT OFFICE
2,405,751
APPARATUS FOR BREWING corran
`lcseph Moll/Ionamin, Clementon, N. J.
Application December 23, 1942', serial No. 469,943'
y
_o
2 Claims.
This invention relates to improvements in coffee
makers, and particularly, to certain novel means
included in said coffee makers, relating tothe
portion of the Vcoffee maker wherein‘the coffee
grounds are normally conñned during the brew
ing
(c1. 99-289)
2
1
operation.
H
_
,A
The invention particularly is directed toward
coffee makers adapted to be molded or otherwise
formed- from glass or porcelain-like material; and
contemplates improvements in coffee makers of
this type whereby breakage of the various parts
filtering cloth which may be incorporated in the
coiîee maker.
Referring now particularly to Figure 3 of the
drawing, there is shown a percolator type coiîee
maker, including a liquid vessel I, with suitable
handle means 2 carried thereby, and a top clo
sure member 3 seated on the liquid vessel. In
teriorly of the said vessel is a percolator tube 4,
provided with a steam dome 5 at the bottom end `
10 thereof, adapted to seat on the inner bottom sur
face of the vessel I, including the conventional
steam and water openings <6 in the said dome 5.
t the upper portion of the steam tube Li is pro
In particular, the invention includes certain
vided a coffee receptacle 'I of substantially cylin
novel forms of members for supporting the coiîee 15 drical formation having a bottom member 8, in
groundsand adapted to be moved inwardlyl and
cluding an opening ei therein adapted to receive
outwardly of _the coffeereceptacle, and> during
the steam tube 4. The said opening e is formed
comprising the coiTee maker is obviated to a great
extent.
o
the said> outward movement to entirely permit the
ejection of the'coñee grounds from the receptacle
with the bottom 8 of the coffee receptacle, and
is provided interiorly thereof with a circumferen
20 tial groove II) adapted to receive therein a resilient
The ejector or coffee supporting member is of
gasket-like member II. The said steam tube 4 is
a form which may be adapted for inclusion in the
provided with a somewhat smaller groove I2 than
well known types of coffee-makers, particularly
the groove III, whereby when the grounds recep
as designed to' accomplish theresults referred to
tacle is in its proper place on the steam tube,
hereinbefore; Since the three well known types 25 the gasket-like member II will seat in the groove
of coffee makers, namely, the Vacuum type, per
I2 and maintain the coffee receptacle in its proper
colator type, and the drip type, are normally not
place relative the said steam tube.
thought to have common characteristics, it will
Above the bottom 8 of the coifee receptacle is
be noted that this invention includes certain
provided a shoulder I 3, on the steam tube, the cir
instrumentalities which may be incorporated into 30 cumference of the steam tube 4 being decreased
these types, which may be common to the said
above the shoulder I3, whereby to receive there
in which they are normally placed.
‘
three types. In this respect, reference is par
ticularly made to the novel form of ñltering
about the substantially tubular portion I4 of the
coffee grounds supporting and ejecting member
means and wiping means, whereby the coffee
I5, as will be seen upon considering this illus
grounds are entirely confined above the ejector 35 tration.
and supporting means so as to be completely re
The grounds supporting and ejecting member
moved from Within the grounds receptacle, when
l5 is of substantially circular configuration,
the brewing operation hasV been completed and
adapted `to seat interiorly of the coiiee grounds
itis desired to dispose of the grounds.
receptacle 1, with the periphery of the flange-like
In the
drawing:
.l
l
A
`
Figure l is a sectional view of a colïee maker
of the vacuum type, including the up-per coffee
receptacle and the lower liquid vessel.
Figure 2 is a cross section about on the line
2%2 of Figure l, illustrating the relationship of
the supporting and ejecting member, within the
grounds receptacle, in its position.
Figure 3 is a cross sectional View of a substan
tially well known type of'percolator coffee maker,
including therein the novel improvements of this
invention.
40 member IG, which is a part of the grounds sup
porting and ejecting member, adjacent the said
inner wall of the receptacle l. The ñange or bot
tom member I6 is provided at its periphery with
a groove I‘I adapted to receive therein a gasket
like member I8, whichmay be preferably formed
so as to include the filtering element I9, the said
ñltering element preferably being made of ñnely
woven cloth, or the like.
Y
Adjacent the substantially tubular shaped
50 member I4, previously referred to, is an addi
tional enlarged portion 26, likewise formed pref
erably with the ñlter. cloth I9, and of material
suniciently elastic to be stretched over the shoul
der 21, formed on the substantially tubular mem
Figure 5 is a top plan view of one form of the 55 ber I4.
Figure 4'V is a bottom View of the coffee-grounds
supporting and ejecting member of Figure 1.
2,405,751
3
'It will be obvious that the construction here re
ferred to is provided to maintain the inner por
tion of the filter cloth I9 in place above the open
ings 22, formed in the flange IB. The openings
22 are spaced in any desirable position around the
substantially tubular member I4, there being
preferably a plurality of the same.
In addition
4
terminating substantially adjacent the bottom 39
of the said liquid vessel. Since this substantially
tubular member 38 is integral with the coifee re
ceptacle 35, it is adapted to position the said re
ceptacle above the vessel 33 upon insertion in a
resilient washer-like member 40, preferably of
rubber or the like, so as to sealingly engage the
outer portion of the tubular member 38 with the
to the aforementioned holes 22, the coffee recep
gasket and cause the washer-like member 40 to
tacle 7 is provided at its bottom with similar holes
or openings 23, whereby the boiling water may 10 engage the mouth or opening 4I provided in the
liquid vessel 33, the foregoing illustrating gener
return to the liquid vessel, after passing through
ally the construction.
the grounds within the coffee receptacle 1. An
However, upon considering further Figure 1, it
additional gasket-like member 24 is provided near
will be noted that the coffee grounds receptacle 35
the upper end of the tubular member I4, seated in
is provided with a grounds supporting and eject
a peripheral groove therein, and adapted to fric
ing member d2. This member 42 is formed with
tionally engage the reduced portion of the steam
a flange-like member 43, adapted to be received
tube so as to prevent displacement therefrom,
within the substantially cylindrical interior of the
except as desired.
receptacle 35 with the periphery thereof adjacent
From the foregoing, it will be apparent that
the said cylindrical Wall. Formed integrally with
when the coffee grounds are emplaced in the
the flange-like member 43 is a substantially tubu
grounds receptacle l, the normal operation of the
lar member 44, provided with an opening 45
percoiator may be effected by heating water in
therein, the said substantially tubular member
the liquid vessel I, causing the water and steam to
being fixed preferably centrally of the said flange
pass upwardly interiorly of the steam tube 4 and
like member 43. The flange-like member 43 is
be deflected by the top 3 so as to pass downwardly
further provided with holesor openings 43 for
through the coffee grounds within the receptacle
purposes that will be understood hereinafter.
l and through the ñlter cloth I9, and the open
The flange-like member 43 is adapted to have
1 ings 22 and 23, back in to the liquid vessel I, until
placed thereon the `filter cloth 41, the said filter
the desired strength of the brew has been at
30 cloth being formed substantially in accordance
tained.
with the Figure 3 disclosure, and being provided
Of course, subsequently it is desired to dispose
with the rolls or gasket-like members 48 adjacent
of the grounds, and to this end, the foregoing con
the outer periphery of the flange-like member 43,
struction has been described, referring particu
being seated in a groove 4S formed in said pe
larly to the rolls or gasket-like portions I3,
riphery.
formed with the ñlter cloth I9, whereby when
In accordance with the practise illustrated in
upon an upward movement of the substantially
Figure 1, the filter cloth or element 41 is provided
tubular member I4, availing of the same as a
at its interior with a similar enlarged roll or gas
handle, the grounds supporting and ejecting
ket member 5G, adapted to engage the substan
member I3 will be forced, upwardly and com
pletely out of the coffee grounds receptacle '1, the 40 tially tubular member 44, beneath a shoulder 5I
provided thereon. The ñltering element performs
said member I8 effecting a wiping action along
a similar wiping action toA that heretofore dis
the substantially cylindrical wall of the coffee
closed, when it is desired to remove the coffee
grounds receptacle 1, during this removal opera
grounds from the grounds receptacle 35, upon
tion, .and thus an ejecting action of the grounds
upward movement of the ground supporting and
is effected. Furthermore, bythis construction, if
ejecting member 42, as before described.
it is desired, the enlarged portion of the bottom
Y It will be noted that the coffee grounds recep
3, in which the passage 9 is provided, may be
tacle
is provided with a shoulder 52 to support
grasped and by a downward movement of the
the grounds ejecting and supporting member 42
coffee grounds receptacle 1 a similar ejecting ac
in place within the said grounds receptacle 35.
tion will be effectuated, and the grounds in like
manner completely removed so as to prevent any
of the grounds from ñnding their way into the
brew. vThis construction obviously provides a de
sii-able manner of removing the coffee grounds
from the coffee grounds receptacle '1, and at the '
same time prevents any of the grounds, during
the brewing operation, from obtaining access to
the coffee brewed.
It will be apparent that the roll like member I8
The substantially tubular member 38 previously
referred to is provided with a passage 53 ex
tending upwardly and adjacent the bottom por
tion of the grounds receptacle 35, at said bottom
portion being enlarged so as to provide a much
larger passage or portion 'eiltk for purposes that
will be hereinafter setl forth.
In order to distinctly point out the desirability
of the just described form of the invention, it
is of suñiciently resilient construction so as to 60 might be noted that the construction referred to
is substantially different from the construction
availed of in known vacuum type coffee makers in
tive grooves in the flange members so as to retain
view of the novel means of removing the grounds
the filter cloth in its proper place.
from the grounds receptacle 35, the same com
Referring now to Figure l in which the vacuum
type of coffee maker is embodied. particularlyin 65 prising the grounds supporting and ej ecting mem
accordance with the invention herein described, . ber 42 with the filter element thereon, providing
a wiping action of the interior wall of the coñee
it will be noted that this coffeemaker comprises a
grounds receptacle 35 upon movement of the said
lower liquid vessel33, provided with a handle 34,
supporting and ejecting member outwardly from
and a coffee grounds receptacle 35 provided with a
handle 33, the Vcoffee grounds receptacle likewise 70 the receptacle.
In the known type of vacuum brewers, the
.being provided with a top closure member 3'?.
enableit to be seated firmly within their respec
The coffeegrounds receptacle 35 is provided with
a downwardly extending tubularportion 38, pref
`erably formed integrally therewith, adapted to»Y
extend into the interior of the liquid vessel >33, 75
brewing operation consists in placing'the water
in the lower liquid vessel, and the coffee grounds
?withinthe upper grounds receptacle, placing the
brewer over- a name, and causing the water t0
5
2,405,751
6
boil. The water and steam pass upwardly through
the coffee, through a known filtering instrumen
to enter the openings 4S in the flange-like mem
ber 43 and rise upwardly through liquid in the
receptacle to maintain the liquid at the proper
tality, and in order to prevent a fracture or break
age of the coffee receptacle it is necessary for
brewing temperature during the brewing opera
the operator to be careful that the steam and
tion.
water do not rise too violently within the passage
The brewing operation may be effected by the
provided therefor, since .the coffee grounds recep
improvement herein described under a constant
tacle is normally not heated very much above
moderately high flame, the operator only being
the atmosphere generally surrounding the same.
required to watch the color of the brew, and
If the water and steam are permitted to violent 10 when> the color is as desired, remove the brewer
ly rise, the subsequently rising temperature of
from over the flame so as to enable the brew to
the grounds receptacle will be so rapid that the
previously described fracture or breakage of the
return to the liquid vessel, in accordance with
well known procedure, since the lower vessel is
sealed except for its connection with the coffee
coffee grounds receptacle will take place. There
' fore, the present invention provides a distinctly
grounds receptacle.
advantageous construction, whereby the afore
mentioned breakage is obviated, the same being
It will be seen that the extraction of the flavor
from the coffee grounds takes place at a rela
apparent upon a consideration of the operation
of the brewer in accordance with the following:
tively high temperature and virtually all of the
iiavor is extracted and does not escape with the
At this point, it should be noted that in ordi
nary vacuum type brewers, the operator must
lower the flame immediately upon the water, and
steam starting to rise in the coii‘ee grounds re
ceptacle. However, the operation of the coffee
brewer of this invention may take place with
steam.
~
,
~
Adjacent the steam dome 5 in Figure 3, a resil
ient bumper member 'I5 may be provided so as to
preclude the possibility of breaking the member
4 when ejecting the grounds from the receptacle.
An enlarged portion ‘I6 on the substantially tu
out the previously mentioned close watch over
bular member i 4 may in like manner be pro
the brewing operation. The water in the liquid
vided, to enable the easy manipulation of the
vessel 33 is brought up to its boiling temperature,
ejector I4.
the water and steam rising in the passage 53, and
Having thus described my invention, what I
being distributed beneath the grounds support 30
claim as new and desire to secure by Letters Pat
ing and ejecting member 42 in the passage 54, a
ent of the United States, is:
portion of the said steam and water entering the
1. A coffee maker comprising a liquid vessel, a
openings 46 in the ñange 43 and passing upward
grounds receptacle supported by said vessel and
ly through the filter cloth 41 whereby the brew
ing operation is effected from below the coffee 35 in communication therewith and supporting and
ejecting means for grounds received in the
grounds within the coffee grounds receptacle 35.
grounds receptacle comprising an apertured
However, the passage 45 leading from the en
flange member movable upwardly in and of sub
larged passage 54 is designed so as to provide a
stantially the same interior diameter as the
sort of safety valve. to prevent the too rapid rise
grounds receptacle, and including a handle mem
of the steam, water, and temperature within the 40 ber extending upwardly from the central portion
coffee grounds receptacle 35, since the area of
of the flange member, a filter cloth carried by
and extending over the upper surface of the
the said passage is proportioned to the area of
the openings 46, whereby a portion of the steam,
liange member, and having a roll portion snugly
and, of course, a portion of the water will be
embracing the handle member adjacent to tl_1_e
permitted to rise within the passage 45, the steam 45 point
of juncture thereof with the ñange'mem
escaping to the atmosphere, if desired, and the
ber, and a gasket-like member surrounding the
water falling back into the receptacle 35. It will
flange at the edge thereof and engaged by the
be seen, therefore, that by so proportioning the
ñlter Cloth and adapted with the cloth to per
areas of the openings 45 and 4B within limits
form a wiping action against the inner wall of
which may be determined, the too rapid rise of 50 the grounds receptacle on removal of the iiange
water and steam into the coffee grounds recep
member.
tacle 35 will be overcome and fracture or break
2. A coifee maker comprising a liquid vessel,
age of the said receptacle will be prevented with
a grounds receptable above the liquid vessel in
out necessity for the operator to very closely
communication therewith and the interior of
Watch the said operation.
55
In addition to the foregoing, the construction
and operation herein described provide for the
movement of the steam and water upwardly
which receptacle is of a substantially cylindrical
conformation, supporting and ejecting means
seated in said receptacle and comprised of an
apertured flange member of substantially the
through the coffee grounds in a series of small c
same diameter as the said interior, having open
columns, thus more evenly extracting the iiavor 60 ings therein, a handle member projecting up
from the coffee. If the steam and water were
wardly from the central portion of said flange,
permitted to rise rapidly and unevenly through
a removable filter cloth carried by said flange and
the said grounds, much of the ñavor would be
extended over its apertured surface area, said
lost because it would escape with the steam, to
cloth having a roll portion interengaged with a
the atmosphere. Here, however, it will be noted 65 groove at the flange periphery, and also a roll
that a by-pass is provided for diverting a por
portion surrounding and interengaged with a
tion of the steam directly to the atmosphere with
groovein the handle at a point adjacent to the
out contact with the grounds, thus obviating the
juncture of the handle and flange.
aforementioned objection, the by-pass 45 per
mitting only the normal heating portion of steam 70
JOSEPH MCMENAMIN.
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