Brushing – scrubbing – and general cleaning – Machines – Brushing
Patent
1985-01-23
1987-04-07
Roberts, Edward L.
Brushing, scrubbing, and general cleaning
Machines
Brushing
15 17, A47L 1118
Patent
active
046549161
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an apparatus for cleaning of preferably hard surfaces like floors, stairs and such and having two substantially cylindrical brushes rotating against each other, through which the apparatus is supported on the surface, and means for supply of liquid detergent to the brushes.
BACKGROUND
Apparatus for cleaning of carpets, which mostly are specially intended for soft textile carpets, so called fitted carpets, are earlier known. In these apparatuses a detergent in the form of a comparatively dry foam is added. Except for relatively big and expensive machines, which have driving wheels and a driving motor for the propulsion of the machine and which have a suction installation to suck the detergent with dirt particles, no effective and simple device for collecting dirt particles is known. These big machines are not suitable for small areas like cleaning of stairs where the cleaning until now has been made wholly manually.
The object of the invention is to produce an apparatus which can be designed with relatively small dimensions and thus meet a need when cleaning stairs and floors indoors and which by very simple means makes a very effective collection of dirt particles possible.
THE SOLUTION
Said object is achieved by means of an apparatus, wherein the brushes are arranged to transport dirt particles to a least one container merely by means of their rotation between them, wherein at least one transport channel for the dirt particles is positioned between the brushes and the container, said transport channel having one inlet and one outlet located at the container and wherein the transport channel has a scraping edge arranged for each brush and located at the inlet, said scraping edge being intended for removal of adhered dirt particles from the corresponding brush and wherein the device for supply of liquid detergent has permeable devices which are designed to supply liquid detergent to the brushes so that these are moistened.
BRIEF DESCRIPTION OF DRAWINGS
The invention will now be described in two embodiments with reference to the accompanying drawings in which
FIG. 1 is a perspective view of the apparatus according to a first embodiment of the invention,
FIG. 2 shows a schematic cross section of the apparatus according to the invention,
FIG. 3 shows a partly broken longitudinal section of a brush which is part of the apparatus, and
FIG. 4 shows a longitudinal section of a second embodiment of the apparatus .
BEST MODE OF CARRYING OUT THE INVENTION
The apparatus according to the invention is a cleaning machine intended for cleaning of preferably hard surfaces like floors, stairs etc. The machine has two brushes 1, 2 which are intended to rotate in opposite directions with respect to each other. The brushes 1, 2 are mounted in bearings in gables 3, which are placed at each end of the brushes. On each gable is a yoke 5 with its ends 6 rotatable mounted at a joint 4 in such a known way that it can easily be dismounted, for example by means of a snap-in device. From the top of the yoke 5 a shaft 7 is erected which is fixed to the yoke. From considerations of space the shaft is shown shortened but has in practice a length which is adjusted to the length of a normal person so that the machine can be handled manually by a person who holds the shaft. The shaft 7 has an upper part 8 which is detachably mounted on the remaining part of the shaft by means of, for example, a bayonet joint or similar device. In this upper part a set of rechargable batteries 9 is located which is intended to be used for supplying two electrical drive motors 10 (see FIG. 3) situated in the machine. As is evident from FIG. 1, the lower part of the shaft has a male connector 11, which is supposed to match a corresponding female connector 12 at the lower end of the upper part 8 of the handle. A guide pin 13 is intended to match a corresponding notch 14 in order to make sure that the correct polarity is achieved. On top of the upper part is an electrical switch 15, for example a push-
REFERENCES:
patent: 1268963 (1918-06-01), Gray
patent: 1464031 (1923-08-01), Daly
patent: 1694937 (1928-12-01), Floeter
patent: 1759881 (1930-05-01), Bentley
patent: 1949659 (1934-03-01), Ritter
Bergstrom Henry
Postonen Arne
Postonen Arne
Roberts Edward L.
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