Dispensing – With casing or support – Bracket or suspension supported
Patent
1984-02-13
1985-05-14
Rolla, Joseph J.
Dispensing
With casing or support
Bracket or suspension supported
222326, 222333, 222386, 74422, B67D 506
Patent
active
045166960
DESCRIPTION:
BRIEF SUMMARY
This invention relates to an automatic dispenser for a detergent in the form of a paste in a dish or laundry washing machine.
Hitherto, as a rule manual dispensing devices for the detergent have been used in dish and laundry washing machines, the detergent being put into some kind of pocket in the wet cabinet of the machine. Lately, however, automatic dispensers for dishwashing powder have been presented, the powder being kept in a supply well separated from the web cabinet. However, granular detergents tend to form clumps and clog the dispensers. One way of avoiding this inconvenience is instead to use a detergent in the form of a paste. Such a substance, however, calls for special means for feeding and dispensing. The present invention presents a solution to the problem of dispensing a detergent paste in a dish or laundry washing machine.
The invention provides a device in which the paste is supplied from a container by a motor driven device by means of which the container after a plurality of portions have been fed out is completely emptied and either replaced by a new one or filled with fresh paste. Detergents in this form are insusceptible to moisture and can by means of such a device be dispensed without interruptions in given portions, which are determined by adjusting the operating intervals of the motor driven device. The properties of the device according to this invention are defined by the characteristics of claim 1.
An embodiment of the dispenser will be described in the following with reference to the accompanying drawing, which in
FIG. 1 shows a vertical cross section of the dispenser and in
FIG. 2 shows the driving means of the device in a horizontal cross section on the line II--II of FIG. 1.
The dispensing means is located in an interspace of a wall of the wet cabinet of the machine, preferably in its door. A supply of detergent paste for dish or laundry washing is contained in a tube or a cartridge 10 with a neck 11 at its lower end projecting into the wet cabinet through an opening 12 in the inner wall 13 of the door which in this part has a bulge 14. At the end of the neck is a hole 15 through which paste is fed. The upper end of the tube is open so as to receive a piston 16 with a rod 17. The piston rod has teeth 18 coacting with a drive wheel 19 on the shaft of an electric motor 20. To ensure engagement between teeth and drive wheel a support wheel 21 is placed at that side of the rod which is opposite to the teeth. The motor and the support wheel are fastened to a bracket 22 secured to the inner wall 13 of the door. The support wheel is pivotable out from the rod by the aid of a hinge 23 between the shaft 24 of the wheel and the bracket. The latter also supports a leaf spring 25 with a hole 26 into which the free end of the shaft projects when the wheel is in working position (shown). By removing the spring from the shaft the wheel is disengaged and hence also the rod will be clear of the drive wheel 19.
When a tube 10 is to be inserted into the device the interior wall 13 is uncovered, which can be done by removing a part of the door. The support wheel is swung out, as described in the foregoing, and the rod is removed. A tube is placed vertically with the neck in the opening 12 and the piston 16 in the upper opening. The teeth are turned towards the drive wheel and the support wheel is swung in and secured by means of the spring 25, after which the motor can move the piston downwards in the tube.
The motor is supplied with current from a program control device (not shown) which gives an impulse at an interval in the program of the machine at which the detergent is to be added. Each impulse moves the piston about one tooth forwards which corresponds to a portion of the detergent fed to the wet cabinet. The quantity of the portion can be controlled by making the impulse last for a shorter or a longer time.
The embodiment described is an example of one manner of realising the invention. In other embodiments the tube can be orientated in directions other than the one shown here, and o
REFERENCES:
patent: 358162 (1887-02-01), Miller
patent: 679983 (1901-08-01), O'Neil
patent: 2859628 (1958-11-01), Arko
patent: 3107824 (1963-10-01), Perl
patent: 3207373 (1965-09-01), Dannenmann
patent: 3687339 (1972-08-01), Dessureault
patent: 3854629 (1974-12-01), Blieberger
Aktiebolaget Electrolux
Huppert Michael S.
Miller Alfred E.
Rolla Joseph J.
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