Note: Descriptions are shown in the official language in which they were submitted.
I
this invention relates to a brush with a detergent
feed, more particularly to the type of brush described
in our earlier Patent Application No. 411,259 entitled
"BRUCE".
BACKGROUND OF THE INVENTION
There is described in that specification a
rush, the brush having a body, bristles on the
brush attached to the body, the body carrying a
freely rotatable impeller, an eccentric weight on
the impeller, and means for directing a flow of
fluid onto the impeller so that on rotation of the
impeller the brush body and bristles vibrate due
to the eccentric mass on the impeller.
In this way the brush which may be circular,
rectangular or any other shape does not have the
bristles of the brush rotating, but the brush body
merely v brutes due to the rotation of the impeller
with the eccentric mass so that the driving force
by the water on the impeller does not have to overcome
the frictional resistance of rotation of the brush,
but merely causes the brush body and bristles to
vim ate.
It has now been found that the use and effectiveness
of the brush is enhanced by the provision of a detergent
dispenser.
Oilier systems are known for similar products
which utilize fluid injection from the main stream
of water, either by displacement of the fluid being
dispensed, or by inducing the Flow due to the action
,
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of a venturi so that the liquid is then drawn into
the water stream. The disadvantages of these systems
is that fluid to be dispensed is in direct contact
with the water flow, and any baclcflow situation
caused by a sudden reduction in pressure in the
water supply line, or by an obstruction in the dispense
in nozzle may cause the detergent to flow Jack
into the main supply.
It is an object of this invention to provide
a detergent dispenser which will overcome the above
problem and which can provide a regulated flow of
detergent into the water stream.
BRIEF DESCRIPTION OF THE INVENTION
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Thus according to the invention the flow of
the high spend water around the periphery of the
turbine body is utilized, a blade or other obstruction
being provided to be brought into the high speed
layer and in so doing forms two vortices, the pressure
differential created between the vortices causes
some of the water to flow into the detergent container
or compartment which is then readmitted into the
high speed fluid flow just ahead of the incoming
driving jet.
rho action of the jet creates great turbulence
and foam is thus generated the dispenser being
largely self regulating because the flow through
the container is effected by the detergellt viscosity,
as the mix becomes weaker it becomes thinner and
thus more is administered to the water flow.
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4.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig 1. is a plan view of the brush,
Fig. 2. is a section along the lines 2-2 of
Fix. 1,
Fig. 3 is a section along the line 3-3 of Fig.
2 with the valve in the closed position,
Fig. 4 is a partial view similar to Fig. 3
with the valve in the open position, and
Fig. 5 is a view of the valve element.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The brush l has a brush body 2 carrying a rotatable
impeller 3 rotatable on a bearing pin 4 mounted
on the brush body 2 and a brush board 5. The impeller
3 has a plurality of vanes 6, and between a pair of
vanes 6 are weighted members 7 which this is eccentric-
ally placed so that on rotation of the impeller a
vibratory motion is imparted to the brush. The impeller
3 is driven by water from a jet nozzle I, the water
exhausting through exhaust passages 9 through the
brush board 5 as described in our earlier Patent
Application. An outer cover 10 covers the brush
body, with the brush board 5 carrying bristles 11.
In a preferred form of the invention the brush
body 2 is provided with a detergent tank 1' having
a lid 13 and a connection 14 closed by cap 15 for the
detergent container. Also the brush body 2 contains
a rotary valve member 16 inserted in a bore 17 opening
into the tank 12, this bore also having an aperture 18
opening into the impeller area.
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5.
The rotary valve member 16 is rotatable in the
bore 17, the valve member having a blade 19 which
is adapted to protrude slightly through the aperture
18 opening into the impeller area to thus intercept
the portion of the high speed fluid passing around
the impeller housing.
The valve member is provided with axial passages
2~,21 connecting to cut out portions 22,23 one on
each side of the blade member 19 to thus interconnect
both sides of the blade member to the fluid compartment
as circumferential spaced locations.
When the blade member is positioned to intercept
the fluid flow as shown in Fig. 4 the two vortices
are caused one on each side of the blade member,
one forcing the water past the blade and up the
axial passage 20 into the detergent tank 12, where
it is then mixed with the detergent in the fluid
compartment and/or in the container attached thereto,
the mixture then passing back downwardly via the
other axial passage 21 where it is drawn by the
pressure of the second vortex to be mixed within
the jet issuing to drive the turbine.
The valve member can be rotated to move the
blade member out of position and in the closed position
the portion 24 of the valve member 16 closes off
the aperture opening into the turbine area.
Thus it will be seen that by positioning the valve
to dispense the detergent into the turbine area
before the jut driving the turbine, that the jet
itself does not pressurize the cletergerlt compartment
of the container, and as the dispenser will only
operate when water is being forced into it due to for
rotation of the turbine that any possibility of backfill
is eliminated.
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6.
The dispensing regulation of the fluid flow
is determined mainly by the detergent viscosity,
and as the detergent becomes mixed with more water,
it becomes thinner and thus more is administered
to thus generally maintain the desired detergent
flow rate.
The valve 16 is provided with a knob 25 engage able
on portion 26 so that it can be rotated from the
closed to the open position, a stop 27 on the bottom
of the valve member 16 engaging in recesses in the
brush body 2 to limit the degree of rotation in
each direction.
The bore 17 has an upwardly extending portion
28 having notches 29 and 30 corresponding in position
to the passages 20, 21 when the valve is in the
on position so that the water enters the tank 12
at a circumferential spaced location from the
outlet so the valve for mixing of the water with
the detergent.
Although the invention has been described in
some detail as applied to a brush as detailed in
the our earlier Patent Application referred to above,
it is to be realized that the invention can be applied
to other forms of rotatable cleaning members and
rotatable brushes where there is a flow of high
speed fluid such as water passing around a surface
with the rotatable valve being adapted to be positioned
adjacent that surface.
