DE383823C - Cashier for preparing and serving coffee yourself - Google Patents

Description

Self cashier for the automatic preparation and dispensing of Coffee. The invention relates to a cashier for automatic preparation and dispensing coffee using the inserted coin. o ler @ - @ 'ertmarke (read Engaging: ler drive @ v () direction effected. The device enables the preparation for one or more coffee cups - depending on the size of the device - required Beverage.

The self-cashier measures the predetermined amount of coffee each time off, grinds this, pulls the powder obtained in this way by means of jets of steam and boiling water, pulls out the filter with the powder of the extracted coffee and introduces the empty filters.

Automatic devices of the type mentioned above are already known The main characteristic of the invention, on the other hand, is that the devices from which the device is composed, four different at the same time Act on the filter. thereby enabling the dispensing of coffee with great To bring about speed.

Furthermore, according to the invention, the devices of the coin mechanism, the movement device for the turntable receiving the filters, the device for pulling out the coffee and the arrangement for changing the filters are more expedient than in the known self-cashers of this type. The drawing shows an embodiment of the invention as it has proven to be particularly practical, shown schematically. The self-cashier shown is set up for the preparation of two cups of coffee each. It shows: Fig. R the turntable in a schematic manner, Fig. 2 and 3 the overall view of the self-cashier in front and side view, Fig. 1. and Fig. 5 shows the members for starting up the device in side and front view, Figs. 6 and 7 the members which carry the evaluation to the various devices, in plan and in front view, Figs. 8 and 9 the device for the periodic Continuation of the turntable in plan and in front view, Fig. To, 1r, 12 and 13 the setup for determining the amount and for grinding the coffee, Fig. Around and 15 the arrangement for pulling out the ground coffee in front and side view, Fig. 16 and FIG. 17 shows the arrangement for actuating the taps supplying the water and the steam in front and side views.

The new self-cashier (Fig. 2 and 3) consists of a certain Number of parts that are divided into the following groups for better understanding can.

Group A includes the boiler with the pressure gauge, the safety valve, the water level indicator and other accessories. All of these parts do not differ in any way from those previously used in devices of this type.

Group ß concerns the coin mechanism and the links for starting up of the 'engine (Fig. d., 5).

Group C (Fig. 8, 9) comprises the parts for the periodic switching of the turntable. Group D (Fig. Ro, Ir, i2, 13) includes the device for determining the amount and for grinding the coffee. It essentially corresponds to the known devices of this type.

Group E (Fig. 1q., 15) comprises the parts to automatic Introducing the water and steam into the one containing the ground coffee Filter.

Group F (Fig. 16, 17) includes the links for automatic actuation the water and steam taps.

Group G. (Fig. 7) includes the device for pulling out the filter, which contains the powder of the leached coffee.

Group H (Fig.2) includes those for picking up and guiding a row arrangement serving of empty filters.

The base plate 2 of the boiler (Fig. 2, 3, 7) is on a rotating plate i arranged. This is with a tubular extension 3 and compartments or cells 4 (Fig. 14).

A rotatable toothed disk 5 is keyed onto the attachment 3 (Fig. 7), which transmits its rotary motion to the turntable i above it and on the Base plate 6, which supports the entire self-cashier, rests.

In the space between the plate 6 and the rotating plate i are the parts arranged, which for transmitting the movement of the not shown in the drawing Electric motor are used on the various links of the self-cashier.

Group B, which contains the mint and the parts for commissioning of the motor (Fig. 4 and 5), is arranged by a on the base plate 6 Supported protrusion and is within a sheet metal box open on one side 8 arranged.

If you put one or introduces several coins or tokens, they fall through the coin channel io the area ii of the two-armed lever of the coin scale. In devices where If two cups of coffee are made at the same time, the device can be inserted several coins set up. The dimensions of the coin slot are as customary, the dimensions, ler to be used coins or tokens adapted. The lever of the coin scale is normally in the rest position in a known way a counterweight i2 held. It rests on the tips of two screws i3, @ die be carried by a plate 14. The plate 14 is screwed to a post 15, which is connected to the carrier 6.

When the coins fall on surface ii of the coin scale, it rotates these until they are in the position indicated by the dotted lines in Figure 4 got. Then the coins can fall into the collecting box 8. The length of the coins is such that they cannot slide off the surface i i unless between the outer end 16 of the surface and the wall of the box 8 a sufficiently large space originated. If the coin scales are in equilibrium, the backward one rests, the end having the shape of a tooth 17 on the notch 18 of a main lever i9, which can rotate around the pin 2o. If the coin scales, however, the equilibrium position leaves and arrives in the dashed position, the tooth 17 moves longitudinally the inclined surface of the lower end 21 of a lock lever 22 upwards, which can rotate around a pin 23. This, against the resistance of a Coil spring 24, which connects the locking lever 22 to the post 15, a movement of the locking lever 22 brought about to the left, so that the tooth 17 extends over the end 21 of the locking lever 22 can put. If the coins have left the area i i, then the coil spring 24 has meanwhile returned the locking lever 22 to its starting position, so that the coin scale remains fixed in its inclined position.

If you now press button 25, the spindle is hereby 26 moves. The spindle 26 is provided with an incision 29 into which the end a small piston 27 constantly pressed down by a spring 28 as soon as the spindle is fully depressed. The spindle 26 is on this Way set. Advancing the spindle 26 causes the main lever to rotate i9 around its pin 2o, against the action of the helical spring 3o. At this turn of the main lever leaves the ratchet tooth attached to its lower lever arm 31 the slot 32 of a rotating disc 33 which is mounted on the axle 34 is, in turn, their movement from one not shown in the drawing Engine receives.

The rotation - of the main lever i9 also causes the electrical connection between a small insulated contact plate 35 and the carbon pins 36, which the electric motor actuated. The disc 33 rotates until the under the influence of the coil spring 3o standing ratchet 31 comes to rest again in front of the slot 32, in the same engages and so the disc 33 is fixed.

When the tooth 31 comes back into the slot 32, the contact plate 35 moves away from the carbon pins 36, the electrical circuit is interrupted and the motor is switched off. The slot 32 is long enough to allow a short rotation of the disk 33 even after the motor has stopped due to the living force inherent in it. This prevents the turntable from stopping suddenly.

The main lever i9 is on its upper arm with a small pin 37 provided. This causes the swinging out of the Sperrliebels 22 against the action of the spring 24 when the main lever i9 assumes the inclined position.

As a result, tooth 17 of the \ liinzwaage separates from your lower one Projection of the locking lever 22 loose and comes under the action of the counterweight 12 in front of the incision 38 of the lever i9 engaged. The locking lever 22 returns because the influence of the spring 24 together finitely because the main lever i9 returns to the rest position.

This is done as soon as the disc 33 has completed its rotation, below the influx of the spring 30, since the tooth 31 now re-enters the slot 32 can. The tooth 17 of the coin balance, which was initially held in your incision 38 is now returning to its original position.

When taking its starting position, the main lever i9 presses the small one Spindle 26 back, the engagement between the small piston 27 and your incision 29 stops and button 25 returns to its original position.

The motor axis 34 (Fig.6) transmits the movement by means of a Pulley 39 (Figs. 6 and 7) with the interposition of a number of I'l replacement wheels on the axis .Io and also by means of the conical wheels .41 on the axis 42, which is perpendicular to the aforementioned.

The different parts of the machine are operated by levers, which are provided with small rollers by means of which they are inserted into the incisions of thumbs 43, 44 on the axis .Io, and of thumbs or eccentrics 45, .f6 and 47, which are keyed on the axis .I2, engage.

The machine first acts in such a way that the rotating plate i (Figs. 2 and 7) performs an eighth of a turn, for the purpose of creating a new filter a in place of the filter b (Fig. I), which, as should be assumed, is already there contains leached coffee, exposure to oil; Expose to water and steam jets.

The rotary plate i is wedged on the extension 3 of the same by means of the Disk 5 (Fig. 6 and 7) moved.

At the beginning of the movement caused a small attached to the lever 49 Roller: I8 (Fig. 7) as a result of engaging in the incision of the eccentric 47 (Fig. 6) the movement of the lever 50 firmly connected to your lever 49 (Fig.7), and as a result this movement is the spring-loaded brake pin 51 by the small Pin 52 pulled backwards so that the disc 5 can move freely.

At the same time, a small roller attached to the axle 54 engages 53 (Fig. 2, 8) into the incision of the eccentric .46 (Fig. 9) and calls as a result the movement of the axis 54 and the shoe bar 55 connected to it emerges. The latter has the effect that the disc 5 only executes an eighth of a turn, cla, im At the end of this rotation, the springing brake pin 51 (Fig. 6), which is activated by the lever 5o (Fig. 7) is no longer retained, into one of the incisions 56 (Fig. 6, 8) engages and brakes the disc. After the position of the disc 5 and as a result the turntable i is set in this way, the action of the various begins Parts of the machine under the egg flow of the eccentrics.

The distribution device (Fig. 2, io, i i, 12, 13) 1 consists of one on an axis 58 (Fig. i i) attached cylinder 57, the finite one extending longitudinally Recess io, (Fig.12) is provided, which is intended to accommodate a certain amount of used for burnt quay. The distribution cylinder 57 forms the rotating base of the Filling funnel 6o, in which the brewed coffee is introduced. Part of it falls into recess i05, provided the distribution cylinder is in its initial position is located, d. H. when the recess r05 coincides with the bottom of the hopper. The cylinder can rotate until the recess i05 is indicated by the dashed line in Fig. 12 Lines indicated position i051 assumes. The coffee then falls into the one below located grinding device 61. The cylinder then goes back to its starting position -return.

The rotation of the axis 58 of the distributor is rectilinear through the back and forth movement of a toothed rack 65 (Fig.7, 1o, 11, 12, 13) caused, which meshes with the gearbox 66 (Fig. i i), which is keyed on the axle 58. This rack is moved by an arm 67 (Fig. 7) connected to the lever 68 is. The latter is driven by the eccentric 43, which is on the drive axis q.o is arranged. The coffee that has fallen into the grinder 61 (Fig. I i) is poured through the rotation of the screw 62, which grinds the coffee beans under the teeth of the toothed cone 63 brings. The ground coffee then falls into the filter 64 (h der Fig.i).

The grinder is driven by the motor by means of a pulley 69 powered.

At the same time that the filter 64 is filled with coffee powder, the machine in the filter 70 (Fig. 1q. and iS), which corresponds to part a of Fig. i corresponds, contained coffee powder leached, through the mediation of Parts of group E and group F, which have a water and steam jet in the Insert the filter and operate the cock valves automatically. The drive of this Parts takes place through the eccentric 45 (Fig. 6, 14, 15, 16, 17).

Group E comprises two sliding cylinders arranged on the same axis 71 and 72 (Fig. 14). The cylinder 71 (Fig. 15) is hollow inside and with a provided a small hole 73, which is made in the small, in a part 75 Channel 74 contained water and steam allowed free passage. This part 75 is in communication with the boiler taps by means of the pipe 76.

At the same time, a special device causes the cylinder 71 to slide downwards and the cylinder 72 to slide upwards so that by compressing the enclosure 77 of the cell containing the filter 70 , the latter hermetically seal the latter. In this position the small hole 73 comes into congruence with the small channel 74, the water and the steam pass through the perforated disc 78 and then through the coffee and finally get into a small channel of the lower cylinder 72 and from here to two small taps 79, from which the coffee extract comes out and falls into the cups io3 (Fig. 3). The movement of the two cylinders and their return to their original position is regulated by means of a groove made on the left side of the eccentric 45 (Fig. 15). A small roller 81 arranged on the lever 82 passes through this groove as a result of the rotation of the eccentric.

The lever 82 driven by the small roller 81 swings approximately 14 ° around the pin 83 and then reaches the dashed line in Fig. 15 Lines indicated initial position back.

The movement of lever 82 is controlled by two levers 84 and 85 (Fig. 14 and 15), which are connected to one another by the lever 86. Two toothed ones Sectors 87 (Fig.15), one of which is not shown in the drawing, are keyed on the axes of these levers and move the two cylinders 71 and 72 by means of the rack 88 in the manner described above in opposite directions Directions.

The group F, which refers to the drive of the valves, receives the movement by means of a groove 89 (Fig. 17) on the right side of the above-mentioned eccentric 45, which also drives group E, is attached.

A small roller 9o arranged on the lever 9i passes through the groove 89 and causes the lever to swing out about its pin 92. The movement of the lever is transmitted to a spindle 93 and from here to a small one Armature 94, which, depending on its position, one of the cock valves ioi, io2 for the Water and steam or the two together.

As can be seen from Fig. 17, the groove 89 is shaped in such a way that that the spindle 93 from zier starting position shown in the figure from itself during a first period of time and the small anchor 94 lifts the tap red for the Leaves steam open. The steam is consequently passed through tube 76 into the cylinder 72 (Fig. 14). In a second period of time, the spindle 93 is lowered, the small anchor 94 closes the steam tap and opens the water tap ioi. Form the groove 89 is here such that this second period of time extends somewhat longer can like the first. During a third period, the spindle 93 rises again, the water tap is closed and the steam tap is opened again to generate a second jet of steam on the coffee extract. In a fourth period finally the lever 9i and the spindle 93 return to their original position, in which the two taps are closed.

At the same time as the groups D, E, F , the group G, which relates to the automatic extraction of the filter 96 (Fig. 7), which corresponds to the filter e in Fig. I, is driven. While one arm of the lever 68 drives the group D, the other arm raises the piston 97 (Fig. 7), which extracts from the cell 4 the filter contained therein, which contains powder of coffee that has already been drained. As already stated above, the lever 68 is driven by the eccentric 43.

The filter 96 remains up for a few moments, he however, it then falls into a suitable container as a result of the action a spring-loaded piston 98 through the nose 99 of the same Axis as the eccentric 43 keyed eccentric 44 is driven. In the further Rotation of the eccentric comes the nose 99 with the piston 98 out of engagement, so that the piston 98 under the action of the spring ioo in its shown in Fig. 7 Initial position returns.

The device H, i.e. H. the device for automatic return the empty filter in the cells of the rotating plate i is extremely simple. The device namely consists of a certain number of vertical guide rods fo4 (Fig.3), between which a series of superimposed filters is arranged. In the same period of time that the machine contained in filter a (Fig. i) Coffee is drawn out, the filter h is filled with coffee powder and it is removed a filter e and finally the automatic insertion of an empty filter in that cell .4, which with the vertical guides 104 coincides.

From the above it can be seen (let the coffee, which means this @lasclline should be specially prepared, with the greatest acceleration can be administered. Because while the machine, the user provided the token into the slot in the motor housing, (read the coffee powder made for him takes off, it also ensures that the filter is ready for use with a new one User is filled.

To prevent fraud, the tokens are given in well-known Some special shape that allows it to be inserted into the slot. The length and weight of the same must be such that they match the small Able to drive an electric motor. The capacity of the machine can be of any size in other words, the machine can be designed to be simultaneous one or more cups of coffee can be administered.

There is only one change in the capacity of the machine Change in the dimensions, the recess in the distributor of the 1-filter, the "number @ler outlet taps for the coffee extract and some parts of the various Limbs result.

Claims (9)

P. @ rr`T-ANsi @ Rf = ciir .: 1. Self cashier for the automatic preparation and dispensing of coffee, consisting of a rotatable turntable with several cells intended to accommodate the filters. a device for extracting the coffee powder located on a filter of the rotary plate, a device for determining the quantity of the coffee intended for grinding, with which a further filter is filled, a device for extracting the filter that is already filled with coffee powder and contained in the cell, a device for Insertion of a pure filter in the "cell of the rotating plate located in a corresponding position to this device and an electric motor put into operation by the coin mechanism, thereby wedge-shaped that the four devices, namely the (E) for extracting the coffee contained in a filter, the (D) for filling a second filter with coffee, the (G) for taking out a third filter and the (H) for introducing a fourth filter on the self-checkout and the cells (a to h) on the rotating plate (d) in this way are arranged (e.g. four cells each at an angular arc distance of 9o °) that all four egg directions (E, D, G, H) according to Inganb set the motor through the coin mechanism (Fig. 4) work at the same time. 2. Self cashier according to claim i, in which an electric motor is connected to a disc is, the recesses of which cooperate with a lever carrying a short-circuit contact, characterized in that the tooth (31) inserted into the recess (33, Fig. 4) the disc (33) connected to the motor can be inserted, and one contact (35) carrying main lever (i9) with its one lever leg opposite to one known coin scale (i 1, 17) is arranged, which in its rest position in such Distance from it (i g) is that the one with its other lever arm opposite the, #, release pressure device (25, 26) standing main lever (i9) through this release mechanism only then can it be moved so far that the tooth (31) releases the disc (33) of the motor and the contact (35) together with the contact (36) the drive current of the '- \ lotors closes when the coin scale (i 1, 17) uses one or more coins or tokens has left its resting position. 3. Self cashier according to claim i and 2 with one Locking lever that holds the coin scale in the release position, characterized by one on the main lever (i9) attached approach (37), which the locking lever (22) at Moving the main lever (i9) to release the now returning to its rest position Coin scale (11, 14) triggers. . 4. Self-cashier according to claim 1 to 3, characterized in that that the main lever (i9) is under the action of a spring (30) which, as soon as after a non-rotation of the disc (33) of the "tooth (31) again opposite the recess (32), the main lever (i 9) returns to its original position, see above that the current circuit (35, 36) is opened again and the electric motor is shut down. 5. Self cashier according to claim i to, 4, characterized in that the spindle (26) of the release button ( '25 ) is provided with a recess (29) into which a piston (27) by means of a when the spindle (26) is pressed inward Spring (28) can be inserted so that the spindle (26) is held in a poor position until, after one revolution of the disc (33), the main lever (i9) under the action of the spring (30) returns it to its original position. 6th Self-teller according to Claim i, in the case of which the rotating plate carrying the filter cells through an axle with a toothed one Drive wheel or a toothed pulley is connected, which by means of intermediate links with the drive device in connection stands, characterized in that one driven by the electric motor Axis (42) two eccentrics (46 and 47, Fig. 6) are arranged, one of which, the drive eccentric (46) is used to move the toothed disc (5) and the other, the brake eccentric (47), with a and disengageable brake pin (51) cooperates. 7. Self cashier according to claim i and 6, characterized in that the brake eccentric @ (47) by means of levers (49, 5o, Fig.7) with the brake pin (51) under the action of a spring and that with drive eccentric equipped with a curve incision (Fig. 6) by means of a roller (53) with a push rod (55, Fig. 6) engaging in the toothed disk (5) in Connection is, and that the dimensions and shapes of these parts are made in such a way are that when the shaft (4-2) is moved by the motor, the brake eccentric is activated first (46) pulls the brake pin (51) out of one of the incisions (56). then the drive eccentric the toothed disk (5) and the rotating plate or filter disk (i) connected to it an eighth of a turn, whereupon the brake pin, which has now become free (51) into the next incision (56) now facing him through his Spring is inserted and thereby fixes the washers (5 and i) again. B. Self-cashier according to claim i, characterized in that the device (E, Fig. 2 and 3) for Extraction of the coffee from two cylinders arranged on the same axis (71, 72, fig. I4-)? Fig. 15) of the cell containing the filter (7ö) and the lower one (72) when lifting -this Enclosure compresses from bottom to top so that it forms a hermetic seal cause around the filter, and that both cylinders (71, 72) to. their simultaneous Movement with an eccentric disk wedged onto an axis (42) driven by the motor (45) are in communication, «-which are effective during the movement of the rotary plate (k) remains and causes the return of the two cylinders (71, 72) to their starting position, as soon as the coffee extract has flowed into the cups (1o3, Fig. 3). 9. Self cashers according to claims i and 8, characterized in that the upper cylinder (71, Fig. 15) of the device (E, fig. 2 and 3) for drawing out the coffee with a hole (73, Fig. 15), which is provided when moving the upper cylinder (71) downwards a channel (74) emerges through which through the taps (ioi and io2, Fig. 16) water and steam emerging from the boiler pass through the cylinder and cause the extraction of the coffee, its coffee extraction through one in the lower Cylinder attached channel and through outflow openings (79) in the below the the latter located cups (1o3, Fig. 3) arrives. ok Self cashier according to claim i, 8, 9, characterized in that the eccentric disc (45) on one side with a groove (8o, Fig. 15) to drive the levers for moving the cylinders (70, 71) and on the other side with a second groove (89, Fig. 17) for the drive the lever for the taps (ioi and io2) is fitted so that when the top cylinder (71) has lowered within a first period of time, the steam tap (io2) has lowered opens, whereupon this cock closes during a second period of time the faucet (ioi) opens, and in a third period the steam cock opens opens again and finally, in a fourth period, the two taps each other conclude. ii. Self-teller according to claim i, characterized in that the Device (G, Fig. 2, 7) for removing the filter from a metal rod (97), which lifts the filter and one under the action of a spring (ioo) Piston (98), which pushes the filter out to the side after it has been lifted, so that the filter can fall into a pale container underneath, and that .the Metal rod (97) is movable by the same lifter (68) which the device to 'determine the quantity, the piston is under the action of the spring (ioo) (98) but can be moved through the nose (99) of an eccentric (.14) which is on the same Axis (4o) as the eccentric (43) driving the lever itself is keyed.