Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1994-09-19
1997-09-16
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15 48, 15349, A47L 530
Patent
active
056666896
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a cleaning machine, especially for professional cleaning and having two parallel and cylindrical brushes driven in reverse directions about a horizontal axis.
2. Description of the Prior Art
In commercial cleaning of large floor spaces as e.g. in super markets, sales rooms, schools, sports centres, nursing homes, hospitals and industrial premises having a solid flooring such as linoleum, marble tiles, wood, an initial mopping is carried out to remove loose dirt from the floor. This is typically carried out manually by using mops. Then a mechanical washing of the floor is carried out and if required a polishing of the floor can finish the job. This is also performed mechanically, but the polishing cannot begin until the floor has dried after washing. Such a cleaning demands three individual workings of the floor at the same time waiting for the floor to dry before the polishing can be initiated.
The type of floor washers which are most frequently used are based on rotating brush roundels, typically two or three. The cleaning agent is dispensed in the center of the roundels and in some cases at the front. After the roundels there is a suction foot consisting of two closely set rubber lips from which surplus water left after the roundels is sucked up into a collecting tank. The floor is left sufficiently dry for it to be walked on, but not sufficiently dry to be polished immediately. Certain large power driven models of floor washers have a rotating cylindrical horizontal brush intended to sweep the floor in front of the roundels. The brush, however, sweeps the dirt forwardly into a funnel situated in front and raised above floor level, which is not particularly effective. This type of floor washer is also unable to function when close to walls or racks.
Another type of floor washer that has come on the market comprises a rotating, cylindrical, horizontal brush at either side of a collecting tank. A vertical rubber belt is placed between the brushes and the tank. The brushes sweep the dirty detergent towards the rubber belts, it is fed upwardly and is scraped off at the upper edge of the collecting tank and falls down. The washer has the advantage over the aforementioned type that it can come closer to walls and racks and that dirt that has not been collected at one brush can be collected by the reversed rotation of the other one. Despite its virtues this floor washer, too, is only capable of performing a washing of the floor.
SUMMARY OF THE INVENTION
The present invention introduces a completely different and new principle rendering it possible to construct a cleaning machine such that it can sweep, wash and polish the floor simultaneously. According to the invention the cleaning machine comprises at least two parallel and cylindrical brushes driven in reverse direction bout a horizontal axis which are placed so closely together that the ends of the brushes in the plane defined by the rotational axes of the brushes almost join, touch one another or just overlap, and that above this plane at least one sweeper in the form of bars, pipes, stretched wires or the like are arranged in the longitudinal direction of the brushes and which are extending into the course of rotation of the brush ends and above the brushes there is a shield for collecting the dirt that is thrown off these when meeting the sweepers, and where the shield at the end of the brushes ends in collecting conduits running in the longitudinal direction to the brushes, wherefrom the collected dirt may pass to a collecting tank.
With the invention a single set of brushes can perform a sweeping and a washing of the floor and leave it sufficiently dry to be walked on. By the close placing of the brushes a comparatively heavy suction effect arises in the wedge area facing the floor between the two closely set brushes sucking up the dirt which is transported on along, between and up onto the upper sides of the brushes. When the brushes meet the sweepers they are b
REFERENCES:
patent: 1268963 (1918-06-01), Gray
patent: 1759881 (1930-05-01), Bentley
patent: 4426751 (1984-01-01), Nordeen
patent: 5077862 (1992-01-01), Rench
patent: 5086539 (1992-02-01), Rench
Cleamatool A/S
Moore Chris K.
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