Drink dispensers with dosing means are known, compare for instance Swedish patent specification 322,367. The dosing means according, to this patent specifica¬ tion comprises a plane plunge, which when handled pushes a given dose of the powder substance from which the drink is prepared ahead and beyond an edge, from which the powder falls into the drink vessel. The present invention has for an object to provide a dosing device which allows portioning of different doses of powder substance, each selected dose having an exactly defined volume.

The characterizing features of the invention will appear from the attached main claim. In an arrangement according to the above mentioned Swedish patent specifi¬ cation, the drink vessel is placed under the opening for discharge of the powder substance. When the powder substance has been emptied into the vessel the latter is moved to another place where it is filled with hot water. The hot water is supplied by a cock which is operated manually. The object of the present invention is to provide a dosing device which when used both portions the powder substance into the drink vessel and operates a valve in a hot water conduit which opens above the drink vessel. Thus, the drink vessel need not be moved when the drink is being prepared. Only one member has to be operated for the supply of powder and hot water, which simplifies handling of the drink dispenser. When the drink vessel is placed under the discharge opening of the powder substance and the hot water is poured into it, the steam must not cause the powder in the dosing device and in the container for powder substance to stick together and clog the dosing device and the powder substance container, respectively. To prevent such clogging, the dosing device according to the invention has covers of the kind described in Claims 3 and 4.

Although the invention will be described with reference to two dosing slides for differentiated portioning, it will be evident that the principles which form the basis of the described construction can be used for making dosing devices with three or more dosing slides. The invention will be described below in connection with the attached drawings, in which Fig. 1 is a side sectional view of the dosing device according to the invention, Fig. 2 is a sectional view along the line II - II of Fig. 1, Fig. 3 is a cross sectional view of the lower dosing slide, and Fig. 4 is a cross sectional view of the upper dosing slide.

OΛ'.Pl

" ^•

In Figs. 1 and 2, a dosing device 1 is shown which comprises side walls 2 connected to each other by a horizontal top wall 4. Shoulders 5, 6 in the side w form support surfaces for a container with powder substance inserted into the dos device. The side walls have converging sections 7, 8, which together with incli transverse walls 9, 10 between the side walls form a shaft and a shaft opening powder substance from the container, not shown. A bottom plate 11 exte horizontally between the side walls 2, 3 and has a bevelled emptying edge 12. lower dosing slide 13 is slidably arranged on the bottom plate 11. The lower dos slide 13 has a through hole 14 (compare Fig. 3). An upper dosing slide 15 is slida arranged on the lower dosing slide and has a through hole 16. The dosing slides 13, are movable from a first position shown in Fig. 1, in which the holes 14 and 16 being filled with powder substance, to a second position, not shown, in which t powder substance in the dosing slides is emptied over the emptying edge 12 and fa into the drink vessel below. Thus, in the common case, to which the shown embodiment of the dosi device does not refer, by moving both or only one of the dosing slides to the seco emptying position the dose can be differentiated. Thus, the largest dose is obtain when all slides are simultaneously moved to the second position, not shown, whil smaller dose is obtained if either one or the other of the dosing slides is moved the second position.

The dose supplied by each one of the dosing slides is determined by t volume of the through hole, which in turn is determined for instance by the height the slide. As pointed out in the introduction, more than two dosing slides can be us according to the invention. In the special embodiment shown, two such slides used, and either both together or only the lower one can pour its contents over t emptying edge 12.

The lower dosing slide 13 has a grip member 17 and the upper dosing slide has another grip member 18. The grip members project out of a front wall 19 of t drink dispenser. The grip member 17 has the shape of a plate 20 with a downwar bent grip flange 21. The grip member 18 of the upper dosing slide 15 is formed two legs 22, which extend downwards from the side edges of the slide and proje forward ahead of the front plate 19 where they are connected to each other by web 23. Each leg 22 has a recessed portion 24 shown by dotted lines in Fig. 1, whi gives the legs resiliency. The legs 22 extend over the side edges of the lower dosi slide. Each leg 22 further has a recess 25 which serves as a locking mea co-operating with the lower horizontal edge 26 of the front wall 19. The locki means 25, 26 prevents movement of the upper dosing slide 15.

The grip member 17 of the lower dosing slide has a recess 27 in the shape of a square through opening. The web 23 of the upper dosing slide 15 has an engagement member 28, here in the shape of a tap which fits into the recess 27 when the grip member 18 is depressed. To move both dosing slides 13, 15 to the emptying position above the emptying edge 12 it is thus required firstly that the grip member 18 is depressed so that the engagement member 28 fits into the recess 27 and secondly that the grip member 17 is pulled with the parts in engagement, both slides moving as one unit and together delivering the contents of the holes 14 and 16 past the emptying edge 12. Thereafter the slides are pushed back to the position shown in Fig. 1, whereafter the grip on the members 17 and 18 is released. The locking means or recess 25 then snaps into engagement with the lower edge of the front wall 19 and the starting position is reached.

The bottom plate 11 on its underside has a transverse wall 29 which serves as a holder for a pipe 30 connected to a hot water container, not shown. A valve construction, known per se, comprises an elastic hose 31, one end of which is pushed over the end of the pipe 30 and the other end of which opens above the drink vessel, and two resilient lips 32, 33 control the supply of hot water to the drink vessel. The lips 32, 33 are inclined against each other and extend mainly over the total distance between the side walls 2, 3. The hose is completely clamped together between the lips and is situated approximately centrally between the side walls 2, 3. The valve construction 31, 32, 33 is operated by an actuating means which is connected to the lower dosing slide and in the embodiment shown is formed by two legs 34, 35 below the plate 20 and directed rearwardly. The free end of the legs is formed as a tip which projects between the lips 32, 33 in the way shown in Fig. 1. Thus, by moving the lower dosing slide to the left from the position shown in Fig. 1, which is made possible by the free space 36, the lips 32, 33 are separated and hot water flows down into the drink vessel. The hot steam, however, is prevented from contacting the powder in the shaft and in the through openings 14 and 16 in the dosing slides because the plate 20 covers the opening between the front wall 19 and the bottom plate 11 completely.

In order also to protect the emptying edge 12 from contact with hot steam, a strip 37 is arranged at the underside of the plate 20. The strip extends across the plate between the side walls and has a groove 38 the cross section of which corresponds to the cross section of the emptying edge 12. Beside protecting the emptying edge from contact with hot steam the strip 37 cleans the emptying edge mechanically.

fa A

The embodiment described above can be modified and varied in many within the frame of the inventive idea.

An example thereof is illustrated in Figs. 5 and 6 showing a central vert section and a horizontal section along the line VI - VI of Fig. 5. In Fig. 5 appears that one single slide 100 is used for the handling. The slid shown in a position with a dosing space 114 filled with a dose of soluble pow substance. When the grip flange 121 is pulled, so that the space 114 will be loca outside the emptying edge 112, the powder in the space 114 will flow into a ve placed below the space. Below the bottom plate 111 there is a transverse vertical wall 129 wit central hole for a conduit or hose 131. Beside this hole the wall has holes for guide pins 140, 141, which slide in the holes. The pins are attached to a mov cross bar 142 and around each pin there is a compression spring 143. The two spri press the cross bar 142 against a lower fixed ridge 144. Between the bar 142 and ridge a hose 131 is located. It is kept closed by the springs.

When the grip flange 121 is pushed in, the legs 134, 135 contact the c bar 142 in line with the guide pins 140, 141 so that the cross bar is moved agai the action of the springs 143, whereby the conduit is kept open as long as the han is kept in the pushed-in position. Thereby hot water flows into the vessel below opening of the hose 131.

The arrangement described above is suitable to arrange as a coin- opera dispenserwith a small motor giving the slide 100 the desired movements.