[1]MD 2 1 8 2 2 , 7 4 6 United States Patent Office 2,822,746 rj, COFFEE BREWING MACHINE Julius C. Schwall, Brooklyn, N. Y., assignor to Wallin Industrial Corp., New York, N. Y., a corporation Application May 14, 1954, Serial No. 429,741 lo 3 Claims. (Cl. 99-287) This invention relates to an improvement in coffee 15 brewi ng machines and has particular reference to a coffee brewi ng machine of said type wherein I supply a means for constantly agitating the ground coffee in the coffee basket of tiie brewing machine, while the brewing water passes tarough the -round coffee. 20 My present invention is in the nature of an improvement over an application for a coffee machine filed by me on @Aarch 11, 1952 and b@aring Serial Number 275,89 9, now Patent No. 2,745,334, issued May 15, 1956. In mcsl conventional coffee machines, at present in 25 use, and to the best of my knowledge, the ground coffee becomes and remains tiglitly packed in ti'le coffee basket of the machin-. thereby preventing the full strength an-d flavor of the coffee from being drawn out of tile ground coffee while the brewing liquid passes theretlirougli. 30 The essential object of rny invention is therefore to provide a coffee brewing machine in which the ground coffee, while bein.- brewed, is constantly being scattered through the brewin.- water, and kept in agitative condition wilile the brewin.- water is passing through the grounds. 35 Another object of my invention is the provision therein of means for directing jets of stream into the brewing water as it passes t-firough the ground coffee in the coffee basket thereby maintaining the ground coffee in suspension and drawing from same its maximum strength and 40 highly improving its flavor when brewed. The above objects as well as others and advantages of th-. present invention will be apparent from the followin.- description and claims. My present invention comprises essentially what is gen- 45 erally known as an infusion head which consists of a coffee basket positioned in an upper coffee brewing compartmen t and i-@icludes an infusion jet which is centrally located within the coffee basket. Hot water and steam under pressure, are fed to the jet and emitted through 50 needle oriflces in the infusion jet and directed into the ground coffee, both below and above the bottom of the coff,ee basket. The steam entering the coffee basket together with the brewin.- water will force the ground coffee particles apart and at the same time keep the water in a state of turbulence and the ground particles in agita- 65 tive suspended position. All the particles of the ground coffee become saturated and extract the maximum. amount of flavor. As this invention may be embodied in several forms 60 without departing from the spirit or essential characteristics - thereof, the present embodiment is therefore, illustrative and not restrictive, since the scope of the invention is d,- flned by the appended clairns rather than by the descripti on preceding them, and all changes that fall with- 65 in the metes and bounds of the claim, or of forms that are their functional as well as conjointly cooperative equivale nts, are therefore intended to be embraced by those claims. The invention itself, however, both as to its organiza- 70 tion and its method of operation, wil,l best be understood from the JoHowing description of a specifiq embodi@ient Patented-Feb. II, .1958, 2 when read in connection with the accompanying drawing, in wqich: Fig. I is a front elevational view of my coffee machine suital)ly connected to a hot water and steam generating boiler. Fig. 2 is a top view of my coffee machine without the boiler. 1-ig. 3 is a sectional elevation taken in a plane indicated by line 3-3 of Fig. 2 and shows the cover partly broken away. lig. 4 is an enlarged cross sectional elevation of the coffee brewing chamber and, the infusion head located therein. (The lower portion of the coffee maciiine being broken away). iig. 5 is a fragmentary detail, in section, of a valve for allowing the brewed coffee to pass into a reservoir for tlie brewed coffee and is shown in open position. Fig. 6 is a similar view but shows tne valve in closed position. kig. 7 is a view of a snap clamp provided to hold the maciiine parts together.. Pig. 8 is a side view of same. Fig. 9 is an exploded view of the infusion head and infusion jet, all snown in sectional perspective. iig. 10 is a side elevation of the infusion jet. Fig. I I is a sectional plan view taken along the line II-.ii of Fig. 10. Fig. 12 is a sectional plan view taken along the line 12-,t2 of Fig. 10. -Fig. 13 is a diagram showing the electrical circuits and operating components of ihe machine. Fig. 14 is a front elevational view of ttle hot water and steam generating boiler and shows a part of the wall of tne boil@-r broken away to disclose its interior. Fig. 15 is a top or plan view of Fig. 14. Fig. 16 is a sectional plan view taken along the line 16-16 of Fig. 14. Fig. 17 is a sectional plan view taken along the line 17-17 of Fig. 14. Fig. 18 is an enlarged fragmentary plan view, in section, of a part of Fig. 17. Fig. 19 is a sectional view of the lower portion of a coffee machine and discloses a modified form wherein the hot water and steam generator is made a part of the coffee brewing machine. Fig. 20 is a sectional view of a modified form of infusion head, and Fig. 21 is a plan view of same partly broken away and havin.a the upper portion removed. Referring now to the parts in detail wherein similar refer.-nc.- numerals refer to similar parts throughout, 12 desigriates, in general a coffee brewing machine and 14 a hot water and steam generator which is connected to the coffee machine by means of a hot water line 16 and a steam supply line 18 respectively. The coffee brewing machine 12 comprises a base compartmdnt member 20, open at its top and having a bottom 22, the said base compartment being provided to house various operating and controlling units which will be hereinafter fully described. An annular base ring 24 is secured to the base member and raises the bottom 22 slightly above a table top or stand. An annular connecting member 26 having a depending rim 28 rests upon the upper or open end of the base compartment member 20 and has an inwardly extendirig flange 30 which is adapted to form a seat for the bottom 32 of a heat resistant glass jar 34 which jar functions as a storage compartment for brewed coffee. An annular band 36, having lower and upper inwardly extending flanges 38 and 40 respectively, rests upon the upper open end of the said storage jar 34 and provides a seat, upon the flange 40 f6r
[2]3. a second smaller glass jar 42. The said glass jar 42 provides the coffee brewin.- compartment of the machine. Around the top of said jar 42 there is arran-.ed a flan.-ed ring capping member 44 to the top of which there is pivotally attached, as at 46, a domed- cover 48 which is. held in closed position by a latching means 50 (Fi.-s. 3 and 4), to be hereinafter fully described. Wben the parts above described are fitted to.-etber they are held in place by a pair of sprin- clamps 52 (Figs. 1, 7 and 8) the upper portion 54 of which is secured to the capping rina 44 while the lower or lock,n- pa@,@t 56 is attached to th.- upper ends 58, of a pair of standards 69 secured at their low&r ends 62, to the annular-connectin@ rin26 upon the top of the base member 20. The description - which now follows concerns th-, infusion h-ad 64 seated within- the coffee brewing jar 42 and an infusion jet 66 within the infusion head which form the essential features o'l my present invention. The infusion head comprises (Fio.s. 4 a-@id9 to 12 inclusive), a base mt@mber 63 havin.- an- inwardly extending flan.-e 70 upon the lower end of a side wall 72 which side wall 72 has a broadened sid-- wall 76 to form a sli-,ht ledge 'I 6 and an -Lipper lapped-over end 78. A flat cross baiid 80 havin.- orifices 82 is welded or otherwise secured to the under side of the Ran.-e 70 and has a centered block 84 welded or otherwise secured to the said cross band 80 and through said block 84 and band 80 there is provided a threaded orifice 86. To the outer, lower end of th-@ ,vall 72 there is attached, by suitable means, an outwardly and down-,vardly extending ring member 88 which functions as a baffle to hot water and steam as it enters through parts 90 formed in the lower end of the infusion jet and which will be further on more fully described. A lower perforated filtering disk 92 havin.- a central openin.- 94 rests (when the parts are assembled) upon the flange 70-1 upon the disk 92 there rests a filtering fabric or cloth 96 also havin-, a central openin.- 98. Over the disk 96 there rests a second and upper perforated filtering disk 100 which also has a central orifice 102. The following or next procedure is the attacbment of a resilient band 104 upon the lower wall 106 of a ground coffee containidg member 108. The said band 104 is forced up against the side wall 106 until it rests iinder an offset 110 formed by the extended upper wall 112. With the resilient band 104 in place, the-ground coifee compartment member 108 is brou.-ht down and irto the base m.-mber 68 a-,ainst the perforated filter disks 100 and 92 and the interposed filter cloth 96. Thz resilient band 104 is jammed in place in the OffSet UDper portion of the base member 68 as is clearly shown in Fi,-. 4 and provides a seal at that point. The infusion jet 66, hereinbefore r@i.-litioned, may now be placed in position. Before placin.- same in place I will describe this element in detail. The infusion jet already indicated by the reference numeral 66 (Fi-,s. 4, and 9 to 12 inclusive), consists of a bar having an upper solid portion 114, a contracted- lower portion 116 and a central bore or chann-li 118 which extends part way into the infusion jet 66. An upper shoulder 120 is formed near the upper end of the inf-@s,'@on jet and from the shoulder 120 to the extreme upper end of the infusion jet the same is formzd with an exterial thread 122 over which a nut 124 is eventually secur-,d as w,.11 be presently expl ained. Near the lower part of the upper w,.der portion of the infusion jet there is provided a second lower shoulder 126 and directly below said shoilder the jet is formed with a threaded portion 123; which thre-ided portion en,-ages within the intemal threaded part 36 of the orifice in th-, block 84 when the infusion j,-t is coniiect.,d at that point. This procedure, it will be obs.--rved, ties together the perforated filter d;sks 9'@, and 100, the interposed filter cloth 96 and the base m:-.mber 68, the shoulder 126 en,-aging al-,ainst the disk 100@ Upon th3 contracted portion 116 of @the infusion jet th.-re is formed 4 an annular groove 130 within which a ring shaped gasket 132 is held. This gasket functions as a seal and will be later explained. Ports 90, heretofore mentioned are prov'ided in the lower contracted portion 116 of the jet and lead from the bore or channel 118 to a space in the cl-ffee brewin.- chamber just below the perforated disk 92 of the infusion head (Fi,-S, 4, 9 and 10). The lower part of the upper portion 114 of the infusion jet is provided with two rows of orifices 134 which lead from 10 the bore 118 directly into the ground coffee compart@i-@ent When the lower end 116 of the infus@on jet is passed throu.-h the orifices 1.02, 98 and 94 of the perforated disks 100 and 92 respeclively and the orifice 98 of the 15 interposed filter cloth 96, then through the threaded orifice 36 of the block 84, th@- jet is screwed into the tlireads 86, the parts m@-ntioned are held ti.-htly to,-ether and form a sin.-le unit which may b.- drawn out and removed from the machine. To facilitate this removal a 20 hand-bar 136 is provided for gripping the infusion head. There now remains a cover member which is attached to the upper end of the infusion jet and comprises a rim m.-mber 138 which is formed with an upper outwardly extendin.- flange 140 and a lower inwardly extendin.- flange 25 142 to the under side of which there is secured a perforat-,d disk 144 and over this disk 144 there is provided a cross band 146 which is secured at its ends, to the said perforated disk 144 The band 146 perforated disk 144 and a washer 148 which is secured to the upper side of 30 said perforated disk 144, have concentric openings which engage over the threaded end 122 of the infusion jet and are held down against the shoulder 120 by means of the nut 124 which en.aa.-cs the threads 122. When the cover is thus held in place, the side wall 138 of same, en.-ages 35 with the upper end of the ground coffee compartment 108. A second handle member 150 is attached to the nut 124 by means of a screw 15Z and has turned down ends 154 which slidably en-.age with the side wall 133. With all the parts attached as above described the entire assembly 40 may be withdrawn from the machine and be replaced by a fresh assembled unit or infusion head. The lower end 116 of the infusion jet 66 extends downwardly through a bushing 156 (Fig. 4) which is s.-aled in the bottom 40 of the jar 42 and has a threaded end which 45 extends through the bottom 40. A pipe connecting elbow member 158 is screwed over the bushing and holds it sealed upon the bottom of the jar 42. A pipe line 160 is connected to the elbow member 158 and extends radially to and through the band 36, from whence it leads 50 from a T joint between two solenoid operated valves 162 and 164 r.-- spectively. See Fi,-. 3, and diagram of Fig. 13. (All of the component operating parts are not sh6wn in Fi,-. 3 but are relatively placed in the electrical circuit dia-,.ram of Fig. 13.) One leg of the T joint 55 connects with the solenoid 162 which controls the hot water supply to the pipe' line 160 while the opposite leg of the T joint connects with the sole-@loid 164 .vhich controls the steam supply to s3me pipe line 169. The lines 16 and 18 heretofore mentioned are supply lines 60 leading hot water and ste,3m respcctively from the boiler 14 to the siid solenoids 162 ,)nd '@64 res-)ecti,lely. When the said solenoids 162 and 164 are op.-n, hot water and steam are allowed to pass into the pipe line 169, throu_eh the elbow 158, into the chqnnel 118 of the r,,5 infusidn jet 66, out through the pcrts 90 and 134 into the space below the perforated disk 92 and to the ground coffee compartment 103. The hot water saturating the ground coffee and the steam separating the ground coffee particles keeps them all in a constant state of a,,itation 70 while the water and steam flow through the lines. The perforated disk 144 in the cover member permits steam under exce@sive pressure to pass out of the infusion head and into the coffee brewing jar 42. As the coffee is brewed -it settles in the brewing jar 42 from whence it is 75 passed into the coffee reservoir 34 throu.-h a plunger valve
[3]i66 mounted,upbn the lower end of a reciprocally movin.- rbd 168, slidable in a bracketed bearing member 170 (Figs. 4, 5 and 6). The said action occurs at the completion of a brewing cycle. The plunger valve 166 has a button type resilient member 172 whidh is adapted to engage within a bushing 174 which is scaled to and securely held, upon the bottom 110 by means of a nut 176 and gasket 178. The bottom of said button 172 is annularly grooved as at 180 to form an annular p rojecti ng lip 182 which is deformed as it ent.-rs the bushing 174 to make a tight seal when the plunger valve 166 is down to closed position as shown in Fig. 6. The plunger valve 166 and@its connected rod 168 are normally held in their lowermost,closed valve position by the pressure upon the rod's upper end when the cover 48 is in closed position (Fig. 4) ' and held thus by the hereinbef(>re mentioned latch 50. The said latch 50 is slidable through an opening 184 at the top of a plate 186 w@lc'h is secured to the aforesaid capping rin.- 44 and to the annular band 36 and has secured to it a bracket 188 to which there is pivotally attached a rod 190, the upper end of which is slidably and pivotally attached. to one eild of said latch 50. A spring 192, disposed between the plate 186 and rod 190, is adapted to urge the latch 50 into its lockin, position (Fig. 4). To release the said latch there is provided an electro-magnet element 194 which, when electrically energized, attracts the lower enlarged end 196 of the rod 190. A housing 193, having a cover plate 195, is secured to the plate 186 and encloses the latch mechanism. A conduit C carries a current conductor to the current supply line. The upper end of the rod 190 is provided witti an adjusting screw 198 which is adapted to engage against a ledge 200 formed upon the under side of said cover 48. When the latch is drawn back by the, energized el.-ctro-ma,-net 194, the rod 168 rises, due to the urge of spring 1.69, disposed upon the rod -[68, between a shoulder 1.7JL and the base of the bracket 170. After its release from the latcli 50, the cover 48 continues to rise, due to the urge of the spring 202 upon the hinge 46. A spigot 2o4 secured to and through the waU of the lower or base compartment 20, connects with a bushin.206 and elbow 2t)d, affords a means for drawing brewed coffee from the storage jar 34. The base compartmerit 20 provides a housino for a heater lamp 2.10, secured to the bottom 22 of base compartment. A pair of sglenoid operated valves 162 and i64, previously men6oned are also located upon the bottom 22 as is also a timing switch unit having timer disks 2JL2, 214, 2,L6 and 2-iS which are all mounted. tipon a single shaft 220 and driven by a motor 222 all of which are shown on the diagram of Fig. 13. A push-button swit-,h 224 is provided upon the wall of the base compartment 20, as is also a toggle switch 226, and red signal and green signal lights 2LS and 230 respectively (tigs. I and 13). Referring now to the diagram of Fig. 13, it will be nc)ted that an electrical co.nductor cable 232.supplies current from its source (not showii) and consists of lines L 1 and L2 which are connected by branch lines to the various component parts for operating the machine. Ihe line LI leads, through a branch line 234, to the normally open, spring actuated push button switch 224, then through line 236 to the n@otor 222 ar@d time switch 212 to start the motor. The timers 212, 2.i4,.216 and 218 are all connected by short branch lines to the line 234 and the rotatiou of the motor rotates all of said timers. As the motor rotat-.s,,the timer T by-passes the current to . the motor 222 through its connection wilh the branch line.2,36 and maintains -the cjrrent to the otor during the cycle of operation m and at ihe sanl6 time the timer 214 directs a current flow .through a bianch line 238 and 240 to the line L-2 to ener,-ize the solenoid 162 which opens valve connected .with sziid solenoid and @llo,,@s hot water from the line 16 t@) p ass into the -risci line 160 which leads to - the infusidn jet 66. '@At ihe,same- time a branch line 241 di;@ rects current through the green signal light 228 and to the line L2 and illuminates said light to indicate that hot water flows thr(>ugh pipe line 160 to the said infusion jet. When the signal light 228 glows, the pressure upon the push button switch 224 is released and the cycle o current flow proceeds untilcompletion of the op@eration cycle. Co-a.cting and in unison with the timer disk 214, the timer disk 216 closes a circuit through the branch 10 line 244 to the s6lenoid operated valve 164 and through line 246, thereby@allowing steam from the pipe line 18 to flow to the pipe line 160 and up to the infusion jet 66. At the same time a branch line 248, from the line 244 leads current to the si.- nA] light 230, and from the 15 signal light t6 line L2, illuminating the said signal light to iiidicate a steam flow to the infusion jet 66. The timer disk 218 controls the energization of the electro-m agnet 194 which in turn operates to release the said cover 48 and apdns valve 166 to allow brewed @offee to 20 flow into the stora-.e jar 34, and comes into action upon the completion of a cycle of operation. The current line to the electro-magnet 194 extends from the timer disk 218, through the lines in the conduit C (Iii5es 2i6 and 266), 'and is connected in series to line L2. A lamp 210, 25 preferably an infra-red lamp, is mounted upon the bottom 22 of the.base compartment 20 and proviaes a rneans for maintaining the brewed coifee in the storage compart@ ment 34 at a rixed temperature. 'Ihe said iiitrd-red I.mp 2io is ener,@ized I)y a current flow which passes through 30 a bran,;h iiiie 2,3o from L2, through line IoZ to toggie switcil 2216 and throu,ah line 4j4 to line Ll. The said lanip is L;ontruilect oy saici toggie switch and may be proviaed Witii a Lnermo-control swiich la!i which will Open tn,@ circuit wlien Eh,@ lamp reaches a tixed high tempera35 ture. -in the d iagram of Fi-. 13@ there is included an auxillar@ circuit to eaergize a s@ienuict uperated gas viilve anci has in tiie circuit an electro-Swit@:ii wjiich is actuatea by a vupor aL;tuaLed bellows wlil,:,ti is provided to control tile 40 sfeim PfessLire, all oi wjii@-n wlii oc bereinaiter tuliy ciescrioea in coianection wicii tiae desc;ription of tne hot water anci steam gencratur or O&iler. 'I iae generator, snown as a part of Fig. 1, and in detail in 1-igs. i4 tO 16 InCIUSIVe, c(imprises a oase sectioii 26il 45 formi,ig a comparan.;:nt 2oi, j3aviiig a partially opeia bOttOM :LO4 anci aia orinceci snell 2o6 upoia whi@;n there rests a circuiar type gas Durner 206. A gas sulply pipe 2io connects witn a DurDer :zbts and leaus from a regiilation gas source. inlerpose(i in tne gas supply iiiie, 5o tnere is a suienoid operaleci gas valve zi,4 wnit;n is eiectncaliy COnlIeCLeCt ineo the iiiies LI and L2 of tne conctuctur caoie z@:z hereinoefore menlionect, by riieans of a two wire conuuceor 114. (,onneclect iia series to 6ne of tiie wires ot t . fie salct two wire I conctuctor Z.14 there 55 is a secunu two wire conctuctor 2)6 wnlcn leacts to an elecIrl-S wil@,h i'l 6 whicii is acEivatecL by means ot a. steam @pr,,ssuie oc;iiows as witi i)e aescrioed turtner on. tne upiler portion or ecige oi itie base section 260 is formc(i wilil an inwarcily ox@enciing an,iular iiange 280 6o upon wj:iicn reses a water tank 2o@6 iiaving a cuneracted open upjper enlt with an inwaraly turned annular ila@ige up@n w@,,c@i r@@sL6 arl k@ntitiiar riig iiieriioer 206 formect with an internal th - read 268. into the said thread there is screwed a cap or to@ plate 290 formed with a 65 central base 292 and an inlernally threaded base 294. Tiie contracted upper portion 296 of the tank forms a dome for the steam as it is generated. Surrounding the tatik 282 there is a series ol coils of tubing 298 haviiig a water inlet 300 which connects with a water ini.et pip6 70 302 in which there is disposed a valve 304. The water outlet from the coils is at the upper coil through the connection 306 into the pipe line 308 and thence into the tank 282 through a valve 310 which is operated by a float 312 adapted to maintain the water in the tank 75 at @a predeterniined level. Hot wate leave the i,,@i r
[4]7 thro.ugh,.th.e outlet -pipe 16 and,is. led, through, this pipe to the solenoid oper-ated valve 164 -in the coffed brev@ing machine. The water coils 298 are continuous and, spaced away from the tank wall a short distance as at 314 and is best shown in Fig. 14 and enlarged fragmentary section of Fig. 18. Surroun,din,- the coils,:and;spaced slightly aviay from same there is a sleeve 316 which is spaced from the -coils by not less than three @ertical.. - ribs 318 (Figs. 17 and 1 8). 'the sleeve 316 is. made up in two sections which are connected by.lvler.tically lapped joiit@,, 3iO. Veitical flanged members 322 are secured to the ,sleeve and provide- @pacers a.-ainst which a @ wall 324 forming a housing, engage5. The space between the housin.- wall 324 and the sleeve @ 316 is packed with mineral wool 326 or other suitable. heat: insulating material as indicated in Fi- . 14 and 16 but omitted in Figs.. 17 S, and 18@ In@ the vertical flanged members 1 322 there are at least@ three orifices 328 to allow air circulatilon. To the front of the, housin-@ and, having connection with the interior of the tank there is@ a regulation water gauge 330. The housin,@ 324 is topped with a cover member 332 which is provided with air@vent orifices 334. The bottom flange 280 is provided with orifices @36 for the passage of. hot air from the burner 268 up and around ,the coils 298 and are aclapted to pre-heat the water as it passes through the coils before entering the water tank 282. A short pipe line 338 extends upwardly from the cover plate 290 and terminates at a four way pipe joint 340 and to the upper port of said@four way pipe joint there is attached a steam pressure gauge 342. A pipe line 344 connects the four way joint with the steam supply line 18 which in turn is connected to the solenoid operated steam valve 164 in the coffee brewing machine. A pipe line 346 connects the four way joint to the bellows operated electro-switch 278. A saf-ety valve 348 is connected by pipe line 350 to the hot water tank 282 and leads from the dome 296, (Figs., 14 and 16). Vent openings 352 are. provided in the @ base section 260. A. plate 354 provides a cov,-r over an access opening 356 in the said base section 260.. A valve 358 may be provided in the hot water line 16 betwcen the generator 14 and the coffee machine-12. The gas line 270 to the generator rnay be supplied with a manually operated, cut oft valve (not shown). In operating the,coffee brewing machine, the cycle begins when hot water at five pounds pressure, flows into the infusion charaber at the rate,of one-half gallon per minute. The.hot water flow is from the .-enerator to the coffee brewing . niachine, throu_eh the, solenoid valve, into the riser pipe. line to the infusion jet in the infusion-head. The hot water-leaves the generator at 212' but cools. to a. temperature of 210' when it reaches the infusion chamber. . Following the hot wate.- flow, steam from the generator flo,@k,ing-through@a solenoid valve in the coffee brewing machinel.reaches the infusion jet in the infusion head by passing through the same riser line throuo_h which the hot water flows. The steam maintains the water constantly at 210' through the coffee brewing p-.riod while a@t the same time. agitating the water and ground co@ffee particles. The water and ground coffee agitation thus created extracts the maximum amount of flavor from a fi,,d amount of coffee. The ipyolved coolina feature eliminates any, direct heat from the infusion @chamber an@d thereby prevents t@e extraction of the natural oils from the ground. coff . ee particles, In F.ig. 19 there is shown a modified embodiment of my invention in which the hot water and steam gencratina unit is made a part of the coffee brewinr machine. 'in this said embodiment a base member 414, having a 8 upon an annular inwardly extending ledge 422 upon the said base rhember. The said ledge 422 @provides a support fpr aii u,pDer bas6 section 424 which has an open bottom 426 and is formed with an annular ledge 428 adapted fo sqpport- a tank 482. Above the said tank and si)aced,: from it. -there is provided a heat retarding plate 436- of asbestos or other suitable material, Nvhich allows s'ufficient heat tG reach the bbttom of the coffee reservoir 434 and maintain the brewed 6offee therein at 10 a de ired teniper@ture. The said coffee reservoir 434 is vl@i!ed v,.Poii a ledge 442 which is formed upon a joiner ring 440 adapted to engage over the open top of the upper compartment section 424. A spigot 404 and elbow pipp, 408, coiinected to 'the bbttom of the reservoir 434, 15 provides a means for drawing off brewed coffee, and is sirnilar to tllat heretbfore described. Water is fed to @the'tank,-482 through the supply line 400. Heated water; passes from the tank 482 through the pipe line 416,to a solenoid operated valve 462 located 20 in the base member 414 and from there passes ilp through the riser 460 to the infusion jet 66 of the inftision head, as has been heretofore set forth. The top of the tank 482 is formed with a steam dome 438. A pipe line 418 directs steam to a second. solenoid operated valve 464 25 also located in the said base member, 414, and from the valve 462 e-liters the riser 460 to the i-,ifusion jet 66. A short pipe line 446 connects with a vapor pressure bello,,A;s to operate an electro-switch within the housing 478. The switch therein is electrically connected, by 30 means of a conductor 476 which is i@ t'urn connected, in series, to the current supply conductor 432. The said current supply conductor 432 gupplies current to a timer unit T and motor (not shown) for actuating the said timer unit. The solenoid c.perated valves 462 and 464 35 are electrically connected with the said timer unit T. A p ' ipe line 444 supplies a means for drawing off water from the taiik482. In Figs. 20 and 21. 1 show a modified form of infusion head. :la the said modified form a ground coffee co.n40 tainer or'basket 500 has a lower contracted portion formed by the. side wall 592 and an upper broadened portion formed by the side wall 504. The lower edge of the coffee basket 500 is formed with a ledge 506 upon which there is attached a perforated disk 508 and secured to @i5 'the under side, at the center of the said disk, is a channel section 510 closed at its top but open at its bottom. To the said channel 510 there is attached and radiating therefrom, tubes 512 which are turned into the wall 502 of the coffee basket 500 and terminate in spouts 514. Seat50 ed upon a led.-e 516 secured to the wall 504 oi the upper broadened portion, is an angular ring member 518, to the 'bottom 6f which there is secured a perforated disk 520. The ring 518 is removable from its seat upon the ledge 516 and to facilitate its'removal there is provided a cross 45;3 bar 522 which functions as a handle. Steam and hot water enters the tubular portion 510 from whence it flows through the tubes 512 and emits through the spouts 514 into the coffee basket 500. In this f&rm the spouts 514 replace the infusion jet 66 of 60 the previously describ6d infusion head. A syphon 301, having connection with a draw-off pipe 303, is provided, for emptying the water tank 282 and is provided with a shut-off valve 305. A pilot light 267 is provided upon the gas burner 268 C,5 and is suppli@d with gas throu.-h a branch line 269. The @as supply line 270 is provided with a shut-off valve 271. Thd above described mtchin6 may readily be used for bte@ving tea and-th6 like. I
