DK145011B

DK145011B - BEVERAGE COOKING APPLIANCE

Info

Publication number: DK145011B
Application number: DK116469A
Authority: DK
Inventors: J H Magnusson; W E Beutler
Original assignee: Jede Automater Ag
Priority date: 1968-03-04
Filing date: 1969-03-03
Publication date: 1982-08-02
Also published as: DE1910460A1; NO127650B; DK145011C; DE1910460B2; DE1910460C3; SE322367B; DE1967133C2; DE6908244U

Description

145011145011

Opfindelsen angår et apparat til tilberedning og af den i indledningen til krav 1 angivne art.The invention relates to an apparatus for preparing and of the kind specified in the preamble of claim 1.

Et lignende apparat kendes fra britisk patentskrift nr.A similar apparatus is known from British patent specification no.

975.338, hvor imidlertid alle komponenter er anbragt i et i det mindste praktisk taget lukket hus, i hvilket et stationært lejret drikkekar skal modtage både et grundmedium og et tilsatsmedium. Da begge disse medier er flydende, og især hvis grundmediet skal være varmt, optræder der vanskeligt håndterbare funktionelle og hygiejniske problemer, eftersom grundmediets dampe kan trænge ind i apparatet og primært forårsage korrosionsproblemer. Desuden varierer valget mellem tilsatsmedierne, hvorved der aldrig kan ske en fuldstændig afgivelse af disse, hvoraf rester forbliver tilbage i de tilhørende passager, som delvis er fælles for de forskellige tilsatsmedier. Endvidere er nævnte apparat konstrueret således, at hele lagrings- og afgivelsessystemet er integreret og ikke udskiftelig, hvilket medfører et tids- og omkostningskrævende arbejde ved udskiftning eller tilførsel af nye tilsatsmedier og nyt grundmedium. Dertil kommer nævnte hygiejniske problemer, som nødvendiggør jævnlig rengøring og tilsyn i lande med nogenlunde krav til acceptable hygiejniske forhold.975,338, however, wherein all the components are housed in a at least practically closed housing, in which a stationary stored drinking vessel must receive both a basic medium and an auxiliary medium. Since both of these media are fluid, and especially if the base medium is to be hot, difficult and manageable functional and hygienic problems occur, since the base media fumes can enter the apparatus and primarily cause corrosion problems. Furthermore, the choice between the additive media varies, whereby a complete release can never be made, of which residues remain in the associated passages, which are partly common to the various additive media. Furthermore, said apparatus is designed so that the entire storage and dispensing system is integrated and not interchangeable, resulting in time and costly work in replacing or supplying new additive media and new basic medium. Added to this are the hygienic problems which require regular cleaning and supervision in countries with reasonable requirements for acceptable hygienic conditions.

Apparatet ifølge opfindelsen er ejendommelig ved det i den kendetegnende del af krav 1 angivne.The apparatus according to the invention is characterized by the characterizing part of claim 1.

Derved tilvejebringes et apparat uden kompliceret og kostbar styring, således som det er tilfældet ved ovennævnte kendte apparat, og som er let manuelt betjeneligt, drifts-forstyrelsesfrit, vedligeholdelseslet og ekspertuafhængigt.Thereby, an apparatus is provided without complicated and expensive control, as is the case with the above-mentioned known apparatus, which is easy to operate manually, operation-free, maintenance-free and expert-independent.

I brug udgør apparatet en funktionelt hensigtsmæssigt sammenbygget enhed af doseringsorganer, tilsatsmiddelbeholdere, væsketank samt betjeningsorganer, som også tillader individuel bestemmelse af den tilberedte driks styrke.In use, the apparatus constitutes a functionally appropriately assembled unit of dosing means, additive containers, liquid tank and controls which also allows individual determination of the potency of the prepared beverage.

Sammenlignet med førnævnte kendte apparat bliver fremstil- 2 145011 lingsomkostningerne antageligt mindre end 20% af dettes, foruden at apparatet ifølge opfindelsen bliver mindre klodset og pladskrævende samt væsentlig enklere i konstruktion og funktion.Compared to the aforementioned known apparatus, the manufacturing cost is presumably less than 20% of that, in addition to the apparatus of the invention being less clumsy and space consuming as well as substantially simpler in design and function.

Takket være det vandret anbragte holdeelement, de på dette anbragte individuelt betjenelige pulver- eller granulatformet tilsætningsmiddelrummende beholdere og den lige så let betjenelige nær beholderens doseringsindretninger anbragte aftapningshane er alle betjeningsgreb og afgivelsesåbninger for grundmedium og tilsatsmidler let overskuelige og frit og individuelt tilgængelige på apparatets forside.Thanks to the horizontally positioned holding member, the individually operable powder or granule-shaped additive holding containers and the equally easily operable dispensing tap located near the container's dosing devices, all operating grips and dispensing openings for basic medium and additives are readily accessible and individual apparatus and dispensers.

De under hver beholderbund anbragte, håndbetjenelige doseringsindretninger overflødiggør yderst komplicerede vælgermekanismer og sikrer en enkel, pålidelig og hygiejnisk udlevering ved lave omkostninger. Rester af tilsatsmidler forekommer ikke og endnu mindre sammenblanding af disse, da utilladelige fælles tilsatsmiddelpassager er undgået. Da aftapningshanen for grundmedium er anbragt i afstand fra, men i nærheden af doseringsindretningerne, undgås hygiejniske problemer hidrørende fra fugt eller damp fra hanen.The hand-operated dosing devices placed under each container bottom unnecessarily eliminate extremely complicated selection mechanisms and ensure a simple, reliable and hygienic delivery at low cost. Residues of additives do not occur and even less mixing them, as unacceptable common additive passages are avoided. As the base medium drain tap is spaced away from, but near the metering devices, hygienic problems arising from moisture or steam from the tap are avoided.

I det tilfælde, hvor aftapningshane og doseringsindretninger er beliggende på linie, behøver man ved klargøring af et bæger med en drik blot beskrive en enkel og kort retlinet bevægelse for udførelse af samtlige nødvendige påfyldningsfaser.In the case where the tapping cock and dosing devices are aligned, when preparing a beaker with a beverage, one simply needs to describe a simple and short rectilinear movement for performing all the necessary filling phases.

Ved apparatet ifølge opfindelsen stilles først en kop under en doseringsindretning og påfyldes ved håndbetjening af doseringsindretningen med tilsatsmiddel, såsom boullion-pulver, hvorefter koppen skydes eller flyttes hen under aftapningshanen og fyldes med basismediet, såsom kogende vand. Doseringsindretningen kan håndbetjenes selektivt til afgivelse af en eller flere doser, eller blot en del af en dosis. Brugerens egne betjeningsbevægelser, der praktisk taget er de samme, som skulle bruges til betjening af trykknapperne i et automatisk udskænkningsapparat, udnyttes ved 3 145011 den foreliggende opfindelse til både start og gennemførelse af apparatets enkelte operationer med større sikkerhed for, at koppen eller bægeret forsynes med alle de til indtagning af drikken nødvendige og korrekte ingredienser. Hvor tit har en hyppig bruger af automatisk virkende udskænknings-apparater ikke oplevet, at en af ingredienserne manglede, og brugeren fik udleveret et bæger med smagløst vand, eller endog at bægeret manglede, og drikken strømmede ud over brugerens benklæder, blot fordi strømmen eller automatikken· svigtede, bægre eller ingredienser var opbrugt eller en for brugeren utilgængelig tilsatsmiddelkanal var forstoppet. Ærgrelserne bliver naturligvis ikke mindre ved møntautoma- -ter, der sædvanligvis beholder betalingen for den ikke ud-'·* leverede eller forkerte drik.In the apparatus according to the invention, a cup is first placed under a dosing device and filled by hand operation of the dosing device with additive such as boullion powder, after which the cup is pushed or moved under the tap and filled with the basic medium, such as boiling water. The dosing device can be selectively hand-operated to deliver one or more doses, or just part of a dose. The user's own operating movements, which are practically the same as would be used to operate the push buttons in an automatic dispensing apparatus, are utilized by the present invention for both starting and carrying out the individual operations of the apparatus with greater assurance that the cup or cup is provided with all the necessary and correct ingredients for consuming the drink. How often did a frequent user of automatic dispensing appliances not find that one of the ingredients was missing, and the user was given a cup of tasteless water, or even that the cup was missing, and the drink flowed over the user's leg clothes just because the power or the automatic · Failure, beaker or ingredients were exhausted or an inaccessible additive channel was blocked. Of course, the annoyances are not lessened by coin machines, which usually retain the payment for the non-delivered or wrong beverage.

I apparatet ifølge opfindelsen kan brugeren før anvendelse af apparatet visuelt kontrollere bægrenes samt ingrediensbeholdernes og deres indholds tilstedeværelse, og brugeren er samtidig sikker på, at "automatikken" er i orden, eftersom ordreafgivelsesbevægelserne er identiske med doseringsbevægelserne. Ved strømsvigt virker apparatet også altid til kolde drikke, hvis udførelsen er et kolddriksapparat, og længe, hvis det drejer sig om et varmdriksapparat.In the apparatus of the invention, before using the apparatus, the user can visually check the presence of the cups as well as the ingredients containers and their contents, while at the same time the user is certain that the "automatic" is in order, since the ordering movements are identical to the dosage movements. In the event of a power failure, the appliance also always works for cold drinks if the design is a cold drinker, and long if it is a hot drinker.

På grund af apparatets meget enkle konstruktion er det tillige råstofbesparende i komponentmæssig henseende, sammenlignet med de kendte udskænkningsapparater, og kan derfor opnå lave fremstillingsomkostninger med deraf følgende større udbredelse end de kendte, væsentligt mere komplicerede udskænkningsapparater, foruden at det som nævnt kan få funktioner, som de kendte, markedsførte udskænkningsapparater ikke har, fordi de i så fald ville blive endnu mere komplicerede og vedligeholdelseskrævende med deraf følgende endnu højere udskænkningspriser for brugeren.Due to the very simple construction of the apparatus, it is also component-saving raw material compared to the known dispensers and can therefore achieve low manufacturing costs with consequent greater distribution than the known, considerably more complicated dispensers, in addition to the mentioned functions, which the well-known dispensers do not have, because in that case they would become even more complicated and demanding, resulting in even higher dispensing prices for the user.

Apparatet ifølge opfindelsen vil i det følgepde blive nærmere forklaret under henvisning til tegningen, hvor 4 145011 fig. 1 viser en udføreisesform for apparatet, set forfra, fig. 2 et snit langs linien II-II i fig. 1, fig. 3 et snit langs linien III-III i fig, 1, fig. 4 et længdesnit gennem doseringsindretningen ifølge opfindelsen, fig. 5 et snit langs linien V-V i fig. 4, fig. 6 et stempel i doseringsindretningen, set nedefra, fig. 7 analogt til fig. 5 doseringsindretningen og en tilsætningsmiddelbeholder ifølge en modificeret udførelsesform, og fig. 8 i perspektiv en beholder ifølge fig. 7.The apparatus according to the invention will be explained in more detail below with reference to the drawing, in which FIG. 1 is a front view of an embodiment of the apparatus; FIG. 2 is a section along line II-II of FIG. 1, FIG. 3 is a section along the line III-III in FIG. 1; FIG. 4 is a longitudinal section through the dosing device according to the invention; FIG. 5 is a section along the line V-V in FIG. 4, FIG. 6 is a bottom view of a plunger of the metering device; FIG. 7 analogous to FIG. 5 shows the dosing device and an additive container according to a modified embodiment; and FIG. 8 is a perspective view of a container according to FIG. 7th

Apparatet består af en vandtank 1, der er omsluttet af et varmeisoleringslag 2 og bæres af et æskeformet hus 3 på en sådan måde, at tankens 1 bund 4 ligger i nogen afstand over en bundplade 5, der forneden afgrænser stativet 3. I tanken er der anbragt et elektrisk varmelegeme 6 til opvarmning af vandet, der tilføres gennem en med låg 7 forsynet åbning 8, medens aftapningen sker ved hjælp af en aftapningshane 9, hvis udløbsåbning 10 ligeledes ligger i en vis afstand over bundpladen 5. Denne afstand skal være større end højden af en normal kaffekop 11, papbæger eller lignende indretning.The apparatus consists of a water tank 1 enclosed by a heat insulation layer 2 and carried by a box-shaped housing 3 in such a way that the bottom 4 of the tank 1 lies at some distance above a bottom plate 5, which delimits the stand 3. Below the tank there is arranged an electric heater 6 for heating the water supplied through a cover 8 provided with a lid 7, while the draining takes place by means of a drain tap 9, whose outlet opening 10 is also at a certain distance above the base plate 5. This distance must be greater than the height of a normal coffee cup 11, cardboard cup or similar device.

Apparatet ifølge opfindelsen kan betragtes som opdelt i to dele, dels en tankdel omfattende tanken i med opvarmningsindretningen, og dels i tilslutning til tankdelen et rum, hvor tilberedningen af drikkene sker. Tankdelen er adskilt fra tilberedningsrummet ved en væg 12 samt to sidegavle 13 og 14. I det viste udførelseseksempel er gavlvæggen 14 dels begrænsningsflade for tilberedningsrummet og dels ydre begrænsning af et fremskudt parti af tankdelen. Parallelt med tankdelens ene vertikale.sidevæg 12 er der anbragt et holde- 5 145011 element 15 af udseende som en horisontalt placeret stige med tværgående trin 16. Holdeelementet eller holderen 15 er bestemt til udskifteligt at bære et antal doseringsindretninger 17, der er udstyret med en udløbs- eller doseringsåbning 18 beliggende i væsentlig samme højde som aftapningshanens 9 åbning 10.The apparatus according to the invention can be considered as divided into two parts, partly a tank part comprising the tank in with the heating device and partly in connection with the tank part a room where the preparation of the drinks takes place. The tank portion is separated from the cooking compartment by a wall 12 and two side panels 13 and 14. In the exemplary embodiment shown, the gable wall 14 is partly the confining surface of the cooking space and partly the external restriction of an advanced portion of the tank portion. Parallel to one vertical side wall 12 of the tank portion, a holding member 15 is arranged in appearance as a horizontally positioned ladder with transverse steps 16. The holding member or holder 15 is intended to interchangeably carry a plurality of dosing devices 17 equipped with a outlet or metering opening 18 located at substantially the same height as the opening 10 of the tap 9.

Ved detifig. 1-5 viste udførelseseksempel er den øvre del af doseringsorganet 17 fast forbundet med en beholder eller dåse 19, der indeholder et pulverformet materiale, f.eks. en ekstrakt eller lignende til brug ved tilberedning af forskellige slags drikke, såsom kaffe, te, kakao m.v. Doseringsorganet 17 udgør altså dåsens bunddel.By detifig. 1-5, the upper portion of the metering means 17 is firmly connected to a container or can 19 containing a powdered material, e.g. an extract or the like for use in preparing various kinds of beverages, such as coffee, tea, cocoa, etc. Thus, the metering means 17 constitutes the bottom of the can.

For at sikre dåserne 19 mod at tippe omkring holderen 15, er apparatet i sin øvre del forsynet med et låg 20, som er svingbart om hængsler 21 på tankdelens bageste sidevæg 3.To secure the cans 19 from tipping around the holder 15, the apparatus is provided in its upper part with a lid 20, which is pivotable about hinges 21 on the rear side wall 3 of the tank part.

Låget 20 strækker sig hen over såvel tankdelen som tilberedningsrummet og er ved sin bort fra hængslet vendende forkant forsynet med et i vinkel nedadbukket parti 22, som tjener til at gribe ned over den øvre kantside på en dåse 19.The lid 20 extends over both the tank portion and the cooking compartment and is provided at its forward edge away from the hinge with an angled downward portion 22 which serves to engage the upper edge side of a can 19.

Doseringsindretningen 17 består af et tragtformet udløbshus 23, som forneden har en bund eller bundplade 24 og over denne to åbninger 18 og 25 i de overfor hinanden liggende sidevægge i huset 23. Et som doseringsorgan tjenende plant stempel 26 er forskydeligt lejret parallelt med bundpladen 24.og rager med hver af sine ender ud gennem åbningerne 18 og 25. Åbningen 25 er en smule større end doseringsstemplets 26 tværsnit, og til den del af stemplet, der rager ud gennem åbningen 25, er der fæstet en påvirknings- eller trykplade 27. Stemplet 26 har i hovedsagen samme udstrækning som bundpladen 24, når påvirkningspladen 27 er bragt til anlæg mod den forreste sidevæg i huset 23. Den del af stemplet 26, som ligger ud for åbningen eller udløbsåbningen 18, er udstyret med et forlænget parti 28 i form af en U-formet ramme, hvis i forlængelse af stemplet forløbende rammesider 29 ligger i plan med stemplets sidekanter og er tildannet med en højde, der 6 145011 svarer tilnærmelsesvis til højden af udløbsdoseringsåbningen 18. Det med stempelenden 33 parallelle rammesidestykke 30 er således dimensioneret og placeret, at det i stemplets udskudte stilling overdækker åbningen 18, hvorved hele beholderen eller dåsen er effektivt lukket. Dette rammesidestykke 30 holdes til tætnende anlæg mod åbningen 18 ved hjælp af et elastisk organ 31, f.eks. et gummibånd, som er lagt omkring huset 23 og ydersiden af rammesidestykket 30. Mod oversiden af stemplet 26 har en skrabekant på en mellemvæg 32 anlæg for at hindre, at pulverformet materiale ved stemplets returbevægelse følger med og ud gennem åbningen 25. Stemplets udskydningsende 33 er tildannet med en i en spids udløbende kant, der tjener som afskraber mod bundpladen 24. Stemplet er desuden på undersiden forsynet med i forhold til dets forskydningsretning skråtstillede spor 34, i hvilke eventuelt nedfaldet pulver kan opfanges og medbringes, så at det kan fjernes, når stemplet indtager en af sine slutstillinger.The dosing device 17 consists of a funnel-shaped outlet housing 23 having a bottom or bottom plate 24 below and above these two openings 18 and 25 in the opposite side walls of the housing 23. A dosing plane piston 26 is slidably mounted parallel to the base plate 24. and projecting with each of its ends through the apertures 18 and 25. The aperture 25 is slightly larger than the cross section of the dosing plunger 26 and to the portion of the plunger projecting through the aperture 25 is provided an impact or pressure plate 27. The plunger 26 is substantially the same as the bottom plate 24 when the impact plate 27 is brought into abutment against the front side wall of the housing 23. The portion of the piston 26 adjacent to the opening or outlet opening 18 is provided with an extended portion 28 in the form of a U-shaped frame whose extension sides 29 of the piston extending in alignment with the side edges of the piston and formed at a height approximately equal to the height of the outlet metering aperture 18. The frame side piece 30 parallel to the piston end 33 is dimensioned and positioned so as to cover the aperture 18 in the extended position of the piston, thereby effectively closing the entire container or can. This frame side piece 30 is held for sealing abutment against the opening 18 by means of an elastic member 31, e.g. a rubber band laid around the housing 23 and the outside of the frame side piece 30. Towards the upper side of the piston 26, a scraper edge on a middle wall 32 has abutment to prevent powdered material from returning and exiting through the piston through the opening 25. The piston end 33 is formed with an edge extending at an apex which serves as a scraper against the base plate 24. The piston is further provided with inclined grooves 34 in relation to its shear direction, in which any dropped powder can be captured and carried so that it can be removed when the plunger occupies one of its final positions.

Husets 23 bund 24 er i stemplets 26 forskydningsretning et stykke kortere end husets påfyldnings- eller tilførselsåbning 35, svarende til længden af stemplets ramme 28. Som følge heraf kræves der ikke ekstra plads ved stemplets forskydning ud af doseringsåbningen 18. Husets tilførsels- eller påfyldningsåbning 35 har i hovedsagen samme størrelse og samme tværsnitsform som det ydre omrids af en dåse 19. Hensigtsmæssigt kan huset på indersiden nær ved påfyldningsåbningen 35 være udformet med en fortrinsvis rundtgående anslags- eller anlægskant 36, der tjener som støtteflade for dåsens 19 nedadvendte, åbne ende. Dåsen 19 kan med fordel være klæbet fast til doseringsindretningen 17.The bottom 24 of the housing 23 is in the displacement direction of the plunger 26 a bit shorter than the filling or supply opening 35 of the housing, corresponding to the length of the plunger frame 28. Consequently, no extra space is required in the displacement of the plunger out of the dosing opening 18. The housing supply or filling opening 35 substantially the same size and cross-sectional shape as the outer outline of a can 19. Conveniently, the housing on the inside near the filling opening 35 may be formed with a preferably circumferential abutment or abutment edge 36 serving as a support surface for the downwardly open end of the can 19. The box 19 may advantageously be adhered to the metering device 17.

For at fiksere doseringsindretningens placering på holderen 15, er husets 23 sidevægge 37 tildannet med en forlængelse 38, der tjener til at gribe fat om tværgående trin 16 i holderen 15.In order to fix the positioning of the dosing device on the holder 15, the side walls 37 of the housing 23 are formed with an extension 38 which serves to grip transverse steps 16 in the holder 15.

I fig. 7 og 8 er der vist en modificeret udførelsesform for 7 145011 en pulverdåse 19 ifølge opfindelsen. På dåsens ene ende strækker der sig langs dens sidekanter en kantstrimmel eller skulder 39 med i hovedsagen samme bredde som husets 23 anslagskant 36. Kantstrimlen 39 er forsynet med en klæbestof be lægning, hvorved dåsen efter påfyldning af pulver kan forsegles ved hjælp af en afrivningslap 40, bestående af et materiale, som tillader, at klæbelaget efter lappens fjernelse forbliver intakt på kantstrimlen eller skulderen 39. Som følge heraf kan strimlen 39 ved dåsens anbringelse i huset hæfte ved anslagskanten 36.In FIG. 7 and 8, a modified embodiment of a powder can 19 according to the invention is shown. At one end of the can, an edge strip or shoulder 39 extends along its lateral edges with substantially the same width as the abutment edge of the housing 23. The edge strip 39 is provided with an adhesive coating, whereby the can after sealing powder can be sealed by a tear-off patch 40 , consisting of a material which allows the adhesive layer to remain intact on the edge strip or shoulder 39 after removal of the patch. As a result, upon insertion of the can into the housing, the strip 39 may adhere to the abutment edge 36.

Apparatet ifølge opfindelsen anvendes på følgende måde:The apparatus according to the invention is used as follows:

En kop 11 placeres under den beholder 19 med doseringsindretning 17, som indeholder en ekstrakt af den ønskede drik.A cup 11 is placed underneath it container 19 with metering device 17 containing an extract of the desired beverage.

Når stemplet 26 presses ind, doseres en bestemt mængde pulver, f.eks. svarende til en svag kop kaffe. Hvis man ønsker en stærkere drik, påvirkes stemplet påny, så at den dobbelte eller tredobbelte pulvermængde doseres. Derefter placeres koppen under aftapningshanens munding 10, og en passende mængde varmt vand aftappes. Dermed er drikken færdig.When the plunger 26 is pressed in, a certain amount of powder, e.g. similar to a weak cup of coffee. If you want a stronger drink, the plunger is again affected so that the double or triple powder amount is dosed. Then, the cup is placed under the mouth of the tap 10 and an appropriate amount of hot water is drained. Thus, the drink is finished.

I tankdelens udstyr kan hensigtsmæssigt indgå en termostat til at holde vandets temperatur på et ønsket niveau, samt en indretning til beskyttelse mod tørkogning; disse detailler er ikke vist på tegningen.Conveniently, the tank portion equipment may include a thermostat for keeping the temperature of the water at a desired level, as well as a device for protecting against dry boiling; these details are not shown in the drawing.

En af beholderne 19 med doseringsindretning 17 kan erstattes af et magasin til formstof- eller papbægre. Stemplet 26 kan indrettes til graduering, hvorved det er muligt ved påvirkning af stemplet eksakt at dosere den ønskede pulvermængde, f.eks. svarende til svag, middel- eller stærk drik.One of the containers 19 with metering device 17 can be replaced by a magazine for plastic or cardboard cups. The plunger 26 can be arranged for graduation, whereby it is possible to precisely dose the desired amount of powder, e.g. corresponding to weak, medium or strong drink.

Claims

145011 PATENT REQUIREMENTS:

An apparatus for preparing beverages made from a liquid base medium such as water, and at least one soluble, dispersible additive in powder or granular form, wherein the base medium is stored in a preferably with a heater (6) and heat insulation layer (2) a provided storage tank (1), wherein the additives are stored in at least two containers (19) connected to a housing (3) carrying or enclosing the tank (1), characterized in that a horizontally arranged holding element (15) for the containers (19) are connected to the housing (3), that each container (19) rests on the holding element (15) with freely available additives, that each container (19) is closed by a hand-operated dosing device (17) arranged below the container bottom, and that in the vicinity of the dosing devices (17), preferably in line with these, a drain tap (9) connected to the storage tank (1) is arranged.

Apparatus according to claim 1, characterized in that the metering device (17) comprises a preferably funnel-shaped outlet housing (23), which is provided with a metering plunger (26), which is arranged on a base plate (24) closing the outlet housing (23). ) below that is displaced in the direction towards an outlet opening (18) located above the base plate (24), that the outlet opening (18) is upwardly bounded by a horizontal wall whose length into the outlet housing (23) in the displacement direction of the dosing piston (26) is adapted so that the amount of additive delivered by the piston (26) is determined by it and by the angle of inclination of the additive.

Apparatus according to claim 2, characterized in that the front end of the dosing plunger (26) is provided with a pressure plate (27) outside a pre-arranged opening (25) for the plunger, that at the rear end of the dosing plunger (26) is connected to the free ends of a U-shaped frame (28) arranged in the plane of the piston, that the outer sides or leg portions of the frame (28) lie in a plane with the side faces of the piston, that the height of the frame (28) corresponds practically to the height of the outlet opening and that the parallel bottom or transverse strut (30) of the frame (28) with the piston end (33) has an area that is at least as large as the area of the outlet opening (18).

Apparatus according to claim 2, characterized in that the length of the bottom plate (24) from the front of the outlet housing (23) in the displacement direction of the dosing piston (26) is at least the stroke length of the piston (26) shorter than the depth of the container (19).

Apparatus according to one of claims 1 to 4, characterized in that the dosing piston (26) is subjected to a compressive force in a direction towards the outlet housing (23) of an elastic member (31), preferably a rubber ring extending around the lower end. of the outlet housing (23) and the bottom or cross braces (30) of the frame (28).

Apparatus according to one of claims 1 to 5, characterized in that the lower horizontal edge (33) on the rear of the dosing piston (26) is formed as a scraping edge for abutment against the base plate (24).

Apparatus according to one of claims 1 to 6, characterized in that the front opening (25) for receiving the metering plunger (26) has an intermediate wall (32) extending between the side walls of the metering housing (23) and inclined downwards from the metering housing (23). ) front wall, and that the lower edge of the intermediate wall (32) is formed as a scratching edge for abutment against the upper side of the dosing piston (26).

Apparatus according to any one of claims 1 to 7, characterized in that the outlet housing (23) is formed at least one inwardly at its supply opening (35).