USRE22022E - Coffee-making device - Google Patents

Description

Feb. 10, 1942. A. A. PETERS COFFEE-MAKING DEVICE 2 Sheets-Sheet 1 Original Filed March 7, 1958 1:NVENTOR. F'E TE F? s v QZQ;

ATTORNEY.

A. A. PETERS COFFEE-MAKING DEVICE Feb. 10, 1942.

Original Filed March 7, 1958 2 Sheets-Sheet 2 'INVENTOR.

A. A. BY 7/;

ATTO EY.

Reisaued Feb. 10, 1942 R 22,022

UNITED STATES PATENT OFFICE COFFEE-MAKING DEVICE Ambrose a. Peters, Milwaukee, Wis.

Original No. 2,190,270, dated February 13, 1940, Serial No. 194,405, March I, 1938. Application for reissue December 10, 1941, Serial No. 422,451

5 Claims. (Cl. 53-3) This invention appertains to coflee-making herein after more specifically described, claimed, devices, and has for one of its primary objects and illustrated in the accompanying drawings, in

the provision of a novel coflee urn for restauwhich drawingsrants and the like, in which the obtaining of a Fi u 1 is a persp ct v view of y improved uniform, clear infusion of cofl'eeat all times is coffee-making device or urn.

assured without sediment and objectionable in- Fi e 2 an n arged i v i n of gredients. the container for the ground coflfee, with parts Another object of my invention is the provision hereof br n away n in section. illus r in f 8 e-makins device embodying a container the means for detachably and rotatably connectfor the ground or pulverized cofl'ee beans, with In the container with e means for forcing hot water under pressure up ure 3 18-5 a s e se S on t o the through the ground coffee into a suitable disurn taken u sta y on t l n 3-3 f F pensing vessel, the device eliminating the cusi n the d rec o 0 the arrowstomary procedure of water gravitating down Figure 4 is a longitudinal section through he through the ground cofiee, which allows hot it urn. to en substantially 0 the line of water to stay in'contact with the ground coilee li e l oking in the direction of the arrows.

too long a period of time, and which results in Figure 5 is a detail perspective View Of the the water taking up objectionable constituents cove! t of the ground coffee, Figure 6 is an enlarged detail sectional view A further object of my invention is to provide illustrating the means o associating the eleca coffee um embodying closed n for tric heating element with the closed boiler, the

ceiving a predetermined quantity of clear water, View b61118 taken Substantially n t e l e 56 and a container for receiving apredetermined of u e quantity of ground coffee, whereby a uniform Figure 7 is an enlarged fragmentary bottom grade of coffee can be obtained at all times with- P i Of the closed boiler, illustrating e out likelihood of rr r, means oi detachably associating the electric heat- A further object of my invention is the pro- 'ihg element therewith vision of novel means for forming the container e ring to the drawings in detail, wherein for the ground ff e, d novel means for similar reference characters designate corresociating the same with the urn, whereby theo sponding par throughout t e seve l v ews. container can be readily and quickly placed for the letter A Senefhlly indicates y p v delivering made cofiee to any desired selected cell-"ee-hilikilig ce which comprises a dispensingtank, hollow base Ill, preferably formed of sheet metal A further salient object of my invention is the tably treated to Present a pleasin pp n provision of a container for the ground mice, 85 Arranged o t e b is an upright Protecting with novel means for forcing hot water up under hellsihfi easing Whichreceives the cl sed pressure'through the coffee, the container hayb01181 I2 101 the 0108,! water. The b01181 l2 ing novel means for filtering the liquid as the vleiits upon the lie-Se ll. and is adapted to be same leaves the container so as to insure the heated by any s r means, such as a gas quick passage of the water through the container 40 burner, e l without ediment, It is preferred, however, to heat the boiler A further object of my invention is the pmby an electric resistance element ii of the subvision of novel means for detachably associating 'fl yp T e ele en It s 01 an ated the container with the coffee urn, whereby the ehel'eetel substantlellyill-ehflped in P d same canbequickly and expeditiously re-charged the ends of the legs thereof ca y depending with the desired measured quantity of coflee. terminal-i and Which are ri d y Se ured A un further object of my invention is t to a cover plate l6. This cover plate Hi closes vide an improved cofiee urn or the above char the p nin I formed in the bottom wall or the t which will b bl and m t in boiler l2, which is formed to receive the reone t t m be simple and easy, to manufacture, sistance element. The opening I1 is surrounded and one which can be placed upon the market at by B reinforcing and 8 Basket t! can be a reasonable cost, v interposed between the cover plate and the rib to with these and other objects in view, the inv t se pa e r q d etween the same. 'vention consists in the novel construction, ar- Suitable bolts 1 the like can be p y d for rangement, andi'ormation of parts, as will be tillv hold n the cover platein position. The element I3 is introduced into the boiler through the opening I! at an angle, and is then swung into its correct position with the cover plate It in abutting relation to the flange or rib it, after which the cover plate is rigidly secured in place, as described.

Arranged within the housing or casing Ii on top of the closed boiler i2 on each side of its transverse center are storage and dispensing tanks 2| and 22, which are adapted to receive the made coffee, as will be later set forth. The finished coffee in the tanks 2| and 22 is kept warm by the heat rising from the boiler l2, and; if so desired electricheating elements 23 can be provided for each tank so as to maintain coffee at the desired temperature. The front wall of the base I carries a switch box 24 for the heating element l2 and the heating elements 23, and the switch levers 25 for these elements extend through the front wall, whereby the flow of current can be ready controlled by an operator.

The casing or housing II is also preferably treated to enhance the appearance thereof, and can be insulated in any desired manner, such as is indicated by the reference character 26 for retaining heat therein. The top of the housing or casing can be closed by removable cover 21, and it is to be noted at this point that the upper ends of the tanks 2| and 22 are left open and that the cover is provided respectively with openings 28 and 29 to permit the introduction of the made cofiee into the storage and dispensing tanks.

Any desired type of handle 30 can be provided for the removal cover 21.

Connected with the lower end of the boiler I2 is a. pipe 3i for permitting the introduction of water into the boiler from a service main, or the like, and a hand-operated valve (not shown) can be incorporated in the length of the pipe for controlling the flow of water therethrough. If preferred, a drain pipe 32 can communicate with the lower end of the boiler for facilitating the draining of water therefrom when it is desired to wash the boiler. The boiler is also provided with a sight glass 33, so that the operator can readily determine the height of the water in the boiler. teriorly of the housing or casing l I, and has communication with the upper and lower ends of the boiler through the medium of short pipes 34 and 25.

Extending from the lower ends of the storage and dispensing tanks 2| and 22 are outlet or draw-oil pipes 35, and these outlet pipes also extend through the front wall of the housing, and have connected therewith dispensing faucets-31. Sight glasses 38 can be connected with the pipes 38, so that the height of the coffee in the tanks can be readily seen.

Leading from the closed boiler I2 is a pressure pipe 39, and this pipe likewise leads out through the front wall of the housing or casing II, and is adapted to supply hot water under pressure to the ground coffee container 40, which forms one of the salient features of my invention, and which will be later described in detail. The outer end of the pressure pipe 39 supports a control valve 4|, the outlet end of which communicates with a vertically disposed tube 42, which forms the support for the container 40. It is to be noted that the lower end of the pressure pipe 39 terminates short of the lower end of the boiler, and above the electric resistance element II. This prevents water from being drawn from the This sight glass is arranged ex-- boiler below the top face of the element l3, and thus the overheating of the element, and the burning out thereof, is prevented. The position of the pipe 39 also controls the quantity of clear water which is forced through the container 40.

Referring to the ground coil'ee container 40,

4 it will be noted that the same includes a cylindrical side wall 43, anda bottom wall 44, which has axially formed thereon a depending nipple 45. This nipple is provided with an interior seat 46 for the ball valve 41. A strainer plate 48 is detachably associated with the bottom wall 44 above the nipple for forming a support for the ground coffee to prevent the dropping of the ground coffee into the nipple. An interior annular flange 49 is formed on the side wall of the container adjacent to the upper end thereof for supporting the perforated filter plate 50. This filter plate 50 supports at its axial center a depending perforated filter tube 5|, which is adapted to extend down into the ground coffee. The filter plate 50, and the tube 5|, are covered by a removable filtering fabric 52, which can be made from any desired material, and this filtering fabric can be held in place by a draw-string, or the like. A handle 53 is connected with the filter plate so as to facilitate the removal thereof from the container. A removable cover 54 is provided for the top of the container so as to facilitate the introduction of the ground coffee therein, and this cover can be provided with a depending collar 55 for engaging the filter plate 50 to hold the same in proper position on its supporting flange 49. The cover 54 can be locked in position on the container in any desired manner, such as through the medium of a bayonet slot and pin connection 55.

Extending radially from the container 40 above the filter plate 50 is a discharge nozzle 51 for the made coffee, and this discharge nozzle 51 is adapted to be swung into either of the openings 28 or 23, so as to allow the flow of made coffee into the desired tank 2| or 22.

As heretofore intimatedxthe container 40 is associated with the urn in a novel manner, and thus the upper end of the supporting pipe 42 for the container receives an externally threaded collar-58. The collar 58 has formed therein an interior shoulder 59 on which rests a control disc 50, having a relatively small axial aperture 6!, through which the hot water from the pipe42 is adapted to flow into the container. The'opening ii is formed relatively small so that a sudden rush of water from the boiler into'the container will be prevented, and the disc forms means for controlling the flow .of water into the container without the minute adjustment of the valve 4|. Seated on the disc ill is a rubber or like gasket 62, and the nipple 45 of the container is received in the collar and engages the inner face of the gasket. A hand nut 63 is threaded on the coarse threads of the collar 58, and this hand nut carries a depending annular flange 54, which is adapted to ride between the nipple 45 and the collar 58 for engagement with the gasket 62. If preferred, a wear ring 65 can be interposed between the flange 64 and the gasket 62. The hand nut 63 can carry any preferred type of hand wheel 66 to facilitate the turning thereof. 0bviously, when the nut 63 is tightened, the flange 64 will be forced down against the gasket 62 so as to expand the same into intimate contact with the nipple 45, which will hold the nipple in place.

when it is desired to remove the container,

or change the container on the collar il,'the

hand nut is loosened, which reduces the grip of the gasket on the nipple, and allows easy movement of the nipple.

In use of my improved device, water is introduced into the boiler I! through the pipe II, and the height thereof is observed from the glass 31. When the water reaches the desired height, the same is shut off and the water is then heated by the resistance element It. When suflicient pressure is obtained in the boiler, the water will be forced therefrom, up through the pipe 39, through the supporting pipe 42, and into the container 40. The pressure of the water will lift the valve 41 from off of its seat 46, and thus the free upward flow of the water'is uhhampered. The pressure will force the water up through the ground cofiee in the container, and initially the made coffee will flow into the bottom of the filter tube As sediment collects on the bottom of the filter cloth around the tube, the liquid will fiow into the upper end of the filtering tube and through the filter plate 50. The container is positioned so as to dispose the discharge nozzle ll over the desired tank or receptacle, and when this tank or receptacle is filled, the container can be set so as to position the nozzle over the other tank or receptacle. The height of the made coffee in the tanks can be readily observed by means of the sight glasses 38. A new batch of coffee is made for each tank or receptacle, so that the made coffee in each tank or receptacle will be of a uniform strength.

As a measured quantity of water can be introduced into the boiler, and a measured quantity of coffee placed in the container, a uniform grade of coil'ee is assured, without the likelihood of error. If desired, two or more of the containers 40 can be provided, so that one container can always be charged with the ground cofl'ee ready for instant association with the urn. It preferred, after the coffee is made, the valve ll can be closed, and the container removed and cleaned, and again re-charged with the ground coflee, after which the same can be replaced in its proper position. Obviously, the check valve 41 prevents the downilow of liquid from the container into the boiler.

In conjunction with the boiler I2 I also prefer to utilize a relief pipe 66, and the upper end of this pipe can carry an adjustable relief valve 61. The relief valve 81 can be adjusted so as to control the pressure within the boiler l2, and the set of the valve will control within certain limits the pressure or the water as the same leaves the sure pipe leading from said boiler, a container for ground coffee having communication at its lower end with the pressure pipe, a delivery nozzle carried. by the upper end of the container, and a disc interposed between the pressure pipe and the container having a small delivering orifice.

2. In a device for making coffee, a closed pressure boiler, meansfor introducing water into said boiler, means for heating the water in said boiler, a pressure delivery pipe communicating with the boiler, a container for ground coffee, a depending nipple carried by the lower end of the container, a delivery nozzle carried by the upper end of the container, means connecting the nipple with the pressure delivery pipe, a one-way check valve in said nipple for preventing the down flow of liquid from the container into the pipe, and a disc having a restricted orifice disposed between the nipple and the pressure delivery pipe below the check valve.

3. In a coffee-making device, a boiler, means for introducing water into said boiler, means for heating the water in the boiler, a pressure delivery pipe leading from the boiler, a container for ground coffee having a depending nipple, a delivery nozzle carried by the upper end of the container, an externally threaded collar carried by the pressure delivery pipe, a. gasket received in said collar, the nipple being received in said collar and engaging the inner face of the gasket, a hand nut threaded on the collar, and a depending annular flange on the hand nut engaging the gasket between the nipple and the collar, as and for the purpose specified.

4. In a beverage producer, a stationary heater, means for controllably admitting fresh liquid to said heater, a hot liquid discharge pipe fixedly attached to said heater and having a socket at its delivery end disposed externally of and remote from the heating chamber, a portable container for granular beverage producing material having a hot liquid inlet nipple communicating therewith beneath the granular material therein and formed for frictional slip attachment to said socket, a non-return check valve confined within said nipple, and a beverage dispensing downspout carried directly by and communicating with said container above the granular material therein.

5. In a beverage producer, a stationary heater, inlet means for controllably admitting fresh liquid to said heater, a hot liquid discharge pipe fixedly attached to said heater and having a socket at its delivery end disposed externally of and remote from the heating chamber, a portable container for granular beverage producing material having a hot liquid inlet nipple communicating therewith beneath the granular material therein and formed for frictional slip attachment to said socket, a non-return check valve confined within said nipple, a beverage dispensing down-spout carried directly by and communicating with said container above the granular material therein, a filter interposed between said spout and the granular material within said container, and a removable closure cover for the top of said container coacting directly with said filter.

AMBROSE A. PETERS.

Images