Патент USA US2405751код для вставки
J. `MGMEÍÈKJAiä/IIN APPARATUS FOR BREWING .COFFEE Filed Deo. 25, A17942 \ \\. \ \/\\ 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.