Dispensing – With discharge assistant – Movable or conveyer-type trap chamber
Patent
1987-06-30
1990-01-16
Skaggs, H. Grant
Dispensing
With discharge assistant
Movable or conveyer-type trap chamber
222370, 192 46, 74142, G01F 1110
Patent
active
048937371
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an apparatus for dispensing a pulverulent goods, for example ground coffee, and comprising a container for the goods, a movable discharge device with at least one accommodation compartment for the goods, the discharge device being movable between one position for replenishment of the accommodation compartment from the container, and a position for discharging the goods accommodated in the accommodation compartment.
BACKGROUND ART
In this art, a number of different discharging or dispensing apparatuses are previously known which have been intended for the discharge of determined quantities on each discharge occasion of the goods stored in the discharge apparatus. As one example of such prior art constructions, mention might be made of a container which, in its lower region, is provided with a transverse feeder screw which, on its rotation, dispenses a predetermined amount of goods depending upon the number of turns through which the screw is rotated.
Dispensing apparatuses are also previously known in the art which, in a bottom region of a container, have been provided with reciprocally movable discharge devices with a compartment for accommodating a certain quantity of the goods located in the container. After displacement, preferably in the horizontal direction, of the discharge device, the compartment with the goods quantity is shifted in beneath some form of wiper tool in order subsequently to be passed over a discharge opening through which the goods quantity falls out.
There are also previously known in the art dispensing apparatuses which have been provided with a piston reciprocally movable in a cylinder, the cylinder being, in its side wall, provided with a port or opening in communication with the container. On protraction of the cylinder so that the port is exposed, the contents of the container fall or run down into the cylinder and fill the cylinder with a certain quantity, whereafter the piston is retracted so that the quantity located in the cylinder is positively ejected.
PROBLEM STRUCTURE
Dispensing apparatuses of the type intimated by way of introduction may function satisfactorily in many contexts, but only when the goods in question consist of a liquid or a pulverulent material which possesses good free-flowing properties. However, in such situations when the goods have manifest tendencies to lump together, to form arches or bridges over a downwardly directed opening, or to ad. here to the inner walls of the container, the prior art apparatuses have proved to be wholly inadequate. As a typical example of pulverulent goods with seemingly unmanageable properties, mention might be made of ground coffee, since, first, the particles are unctuous, and, secondly, sharp-edged in their contours, with the result that the particles adhere both to one another and to other objects, and in addition, because of their particulate shape, the particles suffer from markedly poor free-flowing properties. Hence, the dispensing of ground coffee cannot be effected using any of the prior art dispensing apparatuses.
OBJECT OF THE INVENTION
The object of the present invention is to design the apparatus intimated by way of introduction such that it may also be used for unmanageable goods such as, for example, ground coffee. The invention also has for its object to realise an apparatus which permits reliable and dependable dispensing, with dispensed quantities of equal size on each dispensing occasion. Finally, the invention further has for its object to design the apparatus such that the dispensing operation may be effected with full dispensed batches right up to that moment when the receptacle container for the goods is empty.
SOLUTION
The objects forming the basis of the present invention are attained if the apparatus intimated by way of introduction is characterised in that the discharge device is in the form of a rotor which covers substantially the whole of the bottom of the container, and which has a number of upstanding vanes which therebetween f
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AB Ernol
Skaggs H. Grant
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