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Патент USA US3036334

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May 29, 1962
w.-E. Hou
3,036,321
FLOOR MAINTENANCE MACHINES
W
ATTO RN EY
May 29, 1962
'
w. E. HOLT
3,036,321
FLOOR MAINTENANCE MACHINES
Filed Sept. 6. 1960
2 Sheets-Sheet 2
.
M
i
W
ATTORNEY
fice
ilnited. âtates
l
3,036,321
Patented May 29, 196.2
2
chine illustrated in FIG. l is of the general type of tloor
maintenance machine disclosed in my prior U.S. Patent
No. 2,926,369 and comprises a cylindrical metallic hous
ing »10 enclosing an electric motor (not shown) and an
enlarged circular base housing ‘12 surrounding the upper
portion of a removable rotary brush 14 arranged to
3,036,321
William Ernest Holt, % Holt Manufacturing Company,
FLOÜR MAENTENANCE MACHINES
1072 46th St., RR. 6, Box 308, Tampa, Fla.
Filed Sept. 6, 1960, Ser. No. 54,154
8 Claims. (Cl. 15-50)
rotate about a Vertical axis with the lower ends of the
brush bristles in contact with the rug or carpet. A suit
able dn've mechanism connects the electric motor to the
The present invention relates in general .to the con
struction and operation of multi-purpose iioor mainte
nance machines, and more particularly, to improvements 10 rotary brush. A pair of machine-supporting wheels 16
are pivotally mounted on the rear portion of the base
in the construction and operation of rug and carpet
housing 12. An operating handle 18 is also pivotally
scrubbing and shampooing machines in which the sham
mounted on the base housing 4and movable with the
poo solution tank is mounted directly on the motor
wheels between a lower inclined operating position and
housing.
an upright storage position, as disclosed in said prior
In rug and carpet cleaning, it is customary to íirst
condition the rug to remove heavy dirt by a vacuum
machine and then the rug pile is raised and straightened
by a rotary scrubbing brush to condition the rug for
patent.
The motor housing 10 has a substantially ilat circular
top plate 20 having `a peripheral depending ñange 22
ñtting around and secured to the upper end of the hous
the wet shampoo operation. A shampoo solution is then
supplied to the brush bristles while the brush is rotated 20 ing 10. Suitable electrical connections 24 from .the mo
tor to a control switch 26 on the operating handle permit
to work the solution into the base of the pile and re
the operation of the machine in a well known manner for
move the deep seated grime and grease. The foam is
scrubbing ñoor surfaces.
preferably then picked up by a vacuum device and the
When the machine described is to be used for sham
machine is then operated without any solution being
supplied, to once more straighten and raise the pile which 25 pooing rugs or carpets, it can be readily converted for
that purpose without changing or removing any of the
has become twisted by the rotating action of the scrub
described parts. This requires the addition of provisions
bing brush.
for controll-ably supplying a shampoo solution to the
An “over-the-motor” location of the shampoo solu
brush bristles while the machine is in operation. As
tion tank has been found to provide a better machine
balance than locating the tank on the inclined operating 30 shown in FIGS. 2-5, a specially designed adapter ring
30 of cast aluminum is adapted to be seated on and de
handle of the machine. In each type however the solu
tachably secured to the motor housing and in turn have
tion is discharged from the tank by gravity through a
manually controlled valve and delivered through tubing
a shampoo solution tank 50 seated on and detachably
to an opening in the base housing of the machine, from
secured thereto. The adapter ring 30 is formed by an
which it drops onto the grooved and perforated back
annular body member 32 having four arcuately spaced
rectangular notches 34 formed in its inner periphery
at diametrieally arranged locations. The peripheral edge
portions between the notches 34 have short depending
of the rotary brush and ñows down the brush bristles
to the rug surface.
Since the shampoo tank is needed during only part
flanges 36, each of which has an inclined cam surface
of the rug cleaning process, it is highly desirable that
it be readily mountable on and detachable from the 40 36a extending downwardly from the lower side edge of
the corresponding notch and a recessed section 36h
machine. The present invention is concerned with the
arcuately spaced ‘from the lower end of the surface 36a.
provisions of an improved construction of the shampoo
Symmetrically arranged rubber spacer blocks 38 are se
tank and connecting parts for iirmly securing the tank
cured to the underside of the ring at the outer side of
to the machine, but without requiring any change in
each ñange 36 and project downwardly below the level
the construction of the motor housing, the removal of
of the ñange lower edge. The blocks 38 are designed
any part thereof, or the use of special tools for this
to seat on the upper surface of the motor housing top
purpose. For this purpose, I have provided a special
plate and hold the bottom edge of the flanges 36 spaced
adapter ring which can be readily and securely clamped
therefrom su?iciently to permit tank locking lugs here
to the top plate of the motor housing and which is also
constructed to receive projecting lugs mounted on the 50 inafter described to pass therebetween.
Along the outer periphery of the adapter ring 30 are
solution tank bottom and to lock the tank lugs in a
fonmed four arcuately spaced depending outwardly eX
holding position by a slight rotation of the tank.
tending integral brackets 40 at diametrically spaced points.
The various features of novelty which characterize
Clamping jaws 42 are detachably mounted on the under
the invention are pointed out with particularity in the
claims annexed to and forming a part of this specifica 55 side of two adjacent brackets and provided with inwardly
extending tapered projections 44 arranged to engage the
tion. For a better understanding of the invention, its
bottom edge of the motor housing top plate flange 22. at
operating advantages and specific objects attained by its
spaced points when the adapter ring is mounted on the
use, reference should be had to the accompanying draw
ings and descriptive matter in which a preferred embodi
housing as described. The remaining pair of brackets
60 40 serve to rotatably support a pair of clamping cams
ment of the invention is disclosed.
46 having projecting tongue portions 47 movable in a
Of the drawings:
FIG. 1 is a side elevation of a rug and carpet scrub~
horizontal plane about corresponding vertical pivot pins
bing and shampooing machine with the shampoo tank
`mounted in its operating position;
48 to engage the bottom edge of the top plate ñange 22
FIG. 2 is a sectional elevation of the adapter ring
taken on the line 2-2 of FIG. 3;
thereby lock the adapter ring securely to the motor hous
ing with the spacer blocks 38 seated on the top plate.
The cylindrical shampoo solution tank 50 is formed of
FIG. 3 is a bottom View of the adapter ring;
>
FIG. 4 is an elevation, partly in section, of the solu
at points diametrically opposite the clamping jaws 42 and
stainless steel and provided with a separate cover 52 of
suitable plastic material, such as polyethylene. The tank
FIG. 5 is a bottom view of solution tank and adapter 70 has a recessed bottom 53, so that the tank will iit over
the upper surface of the adapter ring. A pair of crossed
ring as assembled.
flat steel bars 54 are symmetrically arranged on and
The rug and carpet scrubbing and shampooing ma
tion tank, adapter ring and motor housing assembly; and
3,036,321
4
Y s
'welded tothe bottom of the tank. The ends of each bar
are bent downwardly and then outwardly to form resilient
locking lugs 56 which are positioned to pass through cor
the lower edge of said top plate circular ñange, arcuately
responding notches 34 in the adapter ring.
With the> .adapter ring 30 secured in position on the'
and having spaced projecting lugs on its bottom arranged
to tit «thro-ugh corresponding notches and engage the
underside of the inner peripheral portion of said adapter
spaced notches formed in the inner periphery of said
adapter ring, and a tank mounted on said adapter ring
motor housing, the solution tank can be quickly mounted,
onl the ring by positioning the locking lugs S6 in and
through the corresponding notches 34 and rotating «the
ring on relative rotation of said tank and adapter ring.
3. A rug and carpet scrubbing and shampooing ma
chine comprising a cylindrical electric motor housing hav
ing a circular top plate with a depending circular flange
overlappingsaid motor housing, an enlarged circular base
housing depending from said motor housing, a horizontal
tank relative to the ring until the lugs `56 pass over the
corresponding inclined cam surfaces 36a and snap into
the ñange recessesy 36h to lock into position on the adapter
ring.
ly arranged rotary surfacing element positioned in said
In operation, the shampoo solution in the tank'50 Hows
by gravity to the base housing of the machine through a f
base housing, an operating handle mounted on said base
tube V60*V connecting an outlet nipple 62 in the lower part 15 housing, an annular adapter ring arranged to seat on said
top plate and engage the lower edge of said top plate
of the tank to a nipple 64 mounted in the base housing
circular ñange, arcuately spaced notches formed in the
12 above the rotating brush. The base of the brush is
grooved and perforated in a well known manner to per
inner periphery of said adapter ring, a shampoo solution
mit the solution `falling -thereon to ñow downwardly over
tank mounted on said adapter ring and having spaced
the brush bristles to the rug or carpet to be shampooed. 20 projecting lugs on its bottom arranged to tit through
The ño'w of solution to the brush is controlled by the
corresponding notches and engage the underside of the
machine operator by a lever operated control valve 66
inner peripheral portion of said adapter ring on relative
mounted on the outlet nipple 62 and a cable 68 secured
rotation ‘of said tank and adapter ring, conduit means
lto the valve lever'and a rod 70 passing through a guide
connecting the lower portion of said >tank to said base
bracket 72 clamped to the upper part< of the operating 25 housing, and a control valve lin said conduit means.
handle 18. The upper end ofthe 'rod 70 is formed in au
4. A rug kand carpet scrubbing and shampooing ma
chine comprising a cylindrical electric motor housing hav
operating ring 74 and covered with a rubber sleeve 76
of suñ‘icient diameter to prevent the rod 70 from drop
ing a circular top plate -With a depending circular tlange
ping through the gui-de bracket when the ring is released.
overlapping said motor housin , an enlarged circular base
An upward pull on the ring 74 moves the valve lever to 30 housing depending from said motor housing, a horizontal
ly arranged rotary surfacing element positioned in said
actuate the valve and cause a ilow ofV `solution from the
base housing, an operating handle mounted on said base
tank 50, and releasing the Vring causesxthe valve to close.
The described -tank assembly is of relatively low cost,
housing, an annular adapter ring havi`ng symmetrically
arranged pairs of fixed jaw clamps and pivoted clamp
easy to manufacture, readily assembled and disassembled,
and lsintuple and effective in operati-on. When the tank is 35 ing cam members on its underside arranged to seat on said
in use, there is no disturbance of the machine balance.
top plate and engage the lower edge of said top plate
circularV flange, arcuately spaced notches formed in the
The machine can advantageously be put in its storage
position with 4the operating handle VYupright and the sup
inner periphery of said adapter ring, a shampoo solution
tank mounted on said adapter ring and having spaced
port wheels in their lowered position, `(while the solution
projecting lugs on its bottom arranged to iit »through
corresponding notches and engage the underside of the
I have illustrated and described 'herein the best form of
inner peripheral portion of said adapter ring on relative
rotation of said tank and adapter ring, conduit means
the invention now known to me, thoserskilled in the art '
connecting the lower portion of said tank to said base
will understand that changes Vmay beA made in the form
o'f the apparatus disclosed Without departing from the
housing, and a control valve in said conduit means.
spirit yof the invention covered by the claims, and that
5. A rug and carpet scrubbing and shampooing machine
comprising ‘a cylindrical electric motor housing having a
certain features of the invention may sometimes be used
to advantage without a corresponding use of other fea
circular top plate with a depending circular flange over
lapping said motor housing, an enlarged circular base
What is claimed is:
s
50 housing depending from said motor housing, ya horizontal
ly arrangedsrotary surfacing element positioned in said
1. A> licor maintenance machine comprising'aY cylin
drical electric motor housing having a circular tcp plate
base housing, an operating handle pivotally mounted on
with a depending circular ñange'overlapping said motor
said base housing arranged for movement between a lower
housing, an 'enlarged circular base housing depending from
inclined operating positionV and an upright storage posi
Vsaid motor housing, a horizontally arranged rotaryV sur 55 tion, lan annular, Vadapter ring `having symmetrically
tank «is in its mounted position.
Y
While in accordance with the provisions of the statutes
tures.
,
Y
Y
,
'
'
Vfacing element positioned in said base housing, ¿an operat
arranged pairs of fixed’ jaw clamps and pivoted clamping
ing handle mounted on said base housing, an annular
camvmembers on its underside arranged to seat on said
adapter ring arranged to seat on said -top plate and engage
the lower edge of said top plate circular flange, arcuately
top plate and engage the lower edge of said top plate
circular iiange, arouately spaced notches formed in the
inner peripheryrof said adapter ring, a shampoo solution
tank mounted on said adapter ring and having spaced
spaced notches formed in the Vinner periphery of said
adapterrring, and a tank mounted Yon said adapter ring
and having spaced projecting lugs onv its bottom Vwranged U-projecting lugs on Vits bottom arranged to titV through
to ñt through corresponding notches and engage the under- Y corresponding notches and engage the underside of the
inner peripheral portion of said adapter Vring Yon relative
side of the inner peripheral portion of said adapter ringV
on relative rotation of said tank and adapter ring. 1 Y
2. A'ñoor maintenance machine comprising a cylin
drical electric motor housing "having a circular top plate
with a depending circular flange overlapping said motor`
housing, an enlarged circular base housing depending from
said motor housing, a horizontally arranged rotary sur-Y
65 rotation of said tank and adapter ring, conduit means
facing element positioned in said base housing, an operat- Y
ing handle 'mounted on said base housing, an annular. Y
adapter ring having symmetrically .arranged pairs of ñXed
jaw clamps and pivoted Vclamping ycam members on its
>connecting the lower ¿portion of said tank'to said base
housing, a control valve'in said conduit means, and means
mounted on said Vor‘ierating handle for operating said con
trol
valve.
Y
Y
,
f
,i
Y
6. An adapter ring comprising an annular body mem
ber having a plurality of `arcuately spaced notches formed
in its inner _periphery adapted to receive corresponding
holding lugs on‘a device toibe supported by said ring, a
' depending ñange on therunderside of said body member
underside arranged to seat on said top plate and engage 75 inner periphery adapted to receive a corresponding hold
3,036,321
ing lug inserted through said notch and passing over said
8. An adapter ring comprising an annular body meni
ber having `a plurality of arcuately spaced notches formed
in its inner periphery adapted to receive corresponding
flange on relative rotative movement of said ring and
supported device, a series of symmetrically arranged
arcuately spaced support brackets depending from the
outer periphery of said body member, a pair of fixed jaw
clamps mounted on the underside of a pair of adjacent
support brackets, land a pair of clamping cam members
`holding lugs on a device to be supported by said ring, a
depending flange on the underside of said body member
inner periphery having an inclined cam surface descend
ing from each of said notches and a recessed portion
adjacent the end of each cam surface adapted to receive
rotatably mounted on the underside of a pair of said
support brackets diametrically opposite corresponding jaw
`a corresponding holding lug inserted through said notch
clamps and adapted to cooperate therewith to hold said 10 and passing over the adjacent cam surface on relative
adapter ring in position on a subjacent support.
rotative movement of said ring and supported device, a
7. An adapter ring comprising an annular body mem
series of symmetrically arranged arcuately spaced support
ber having ia plurality of arcuately spaced notches formed
brackets depending Afrom the outer periphery of said body
in its inner periphery adapted to receive corresponding
member, -a pair of fixed jaw clamps mounted on the
holding lugs on a device to be supported by said ring, a
underside of a pair of adjacent support brackets, and a
depending ilange on the underside of said body member
pair of clamping cam members rotatably mounted on
inner periphery having an inclined cam surface descend
the underside of a pair of said support brackets spaced
ing from each of said notches and -a recessed portion ad
from corresponding jaw clamps and adapted to cooperate
jacent the end of each cam surface adapted to receive a
therewith to 4hold said adapter ring in position on a sub
corresponding holding lug inserted through said notch
jacent support.
and passing over the adjacent cam surface on relative
rotative movement of said ring and supported device, a
series of arcuately spaced support brackets depending
from the outer periphery of said body member, clamping
References Cited in the tile of this patent
UNITED STATES PATENTS
means mounted on the underside of a pair of adjacent 2
support brackets, and a pair of clamping cam members
rotatably mounted on the underside of a pair of said sup
1,591,282
2,893,037
Cech _________________ __ `lilly 6, 1926
Strong _______________ __ July 7, 1959
847,245
France ______________ .__ June 26, 1939
port brackets adapted to cooperate with said clamping
means to hold said adapter ring in position on a subja
cent support.
FOREIGN PATENTS
30
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