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Патент USA US2411488

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‘Nov. 19, 1946,
2% L488
'Filed'Ap'ril 19,‘ 1943 >
Harry B W/z if?
Patented Nov. 19, 1946
Harry B. White, Canton, Ohio, assignor to The
Hoover Company, North Canton, Ohio, a cor
pcration of Ohio
Application April 19, 1943, Serial No. 483,548
1 Claim.
(01. 15-182)
The present invention relates to suction clean
‘ it does for most e?icient cleaning, these elements
ers in general and more particularly to a new
must from time to time be adjusted or replaced
for they become worn after extended use. The
present invention is directed to the provision of a
brush element and a rotatable agitator body
which are adapted to make the task of replacing
and novel suction cleaner brush or agitator.
More particularly, the invention comprises im
provements in the means of mounting a remov
able brush element in a rotatable brush or agi
tator body.
the worn brush element relatively simple. , A
It is an object of the present invention to pro
vide a new and improved suction cleaner. It
brush element is provided which includes ?exible
is another object'of the invention to provide a 10 brush bristles and a deformable ‘back of materialv
such as rubber or its equivalent. The brush seat
new and improved rotary brush or agitator for a
' suction cleaner.
. in the body is so contoured as to permit the back
A further object of the inven
to be inserted radially and to retain it in place
after insertion.
Referring again to the drawing, a suction
tion is to provide improved means of removably
' mounting a brush element in a rotatable agitator
or brush body. A still further object of the in 15
cleaner is illustrated and is seen to comprise a
vention is to provide a removable brush element
nozzle I which is interiorly connected by an air
including ?exible brush bristles and a resilient
passageway 2 to a fan chamber 3 which houses
back which is removably positioned within a seat
a suction-creating fan 4 carried by the extended
in a rotatable brush body. These and other more
- speci?cobjects will appear upon reading ‘the fol 20 lower end of a motor shaft 5, the motor'being
unshown but positioned within, a motor casing .
lowing speci?cation and claims and upon con
immediately above the fan chamber. Nozzle I
sidering in connection therewith the attached
is formed with front and rear surface-contacting
drawing to which they relate.~
lips ‘I and i! through which the cleaning air enters
Referring now to the drawing in which the
same reference character refers to the same part 25 to be drawn by the rotating fan 4 through the air
passageway 2 and discharged through an exhaust
in the various views:
outlet II of the fan chamber into a removably
Figure 1 is a side elevation of a suction cleaner
dust bag 9 which is secured by suitable
incorporating a rotary brush constructed in acmanually operable nuts I2. The machine is mov
cordance with the present invention, certain
. parts being broken away andshown in section; 30 ably supported upon front wheels I3 and rear
wheels II and, as in the usual machine, a pivoted
Figure 2 is a partial side elevation of a rotary
handle I5 is provided by which theoperator may
brush with one brush element removed and ready
exert a propelling force.
for insertion “into its seat in the agitator or brush
s '
Within the, nozzle I is positioned a‘rotatable
agitator I6 which is rotatably mounted upon a
Figure 3 is a section through the agitator body
upon .the line 3—3 and shows the brush seat 35 shaft I1 and includes a cylindrical body I13 formed
‘ with a helically extending brush seat I9 and with
adapted to receive. the brush element which is
spaced therefrom;
helically extending frigid beater elements 20 upon
its surface. Body I8 of agitator I G is centrally
Figure 4 is a view similar to Figure 3 but shows
the ?rst step in the insertion of the brush ele
- ment in its seat in the body; and
Figure 5' is a section upon the line 5-5 of Fig
ure 2 and shows the brush element seated within
- grooved, as at 2|, to form a pulley surface which
40 seats a power-transmitting‘ belt 22 connected to
the pulley 23 at the extreme lower end of the _
motor shaft 5.
The brush seat I9 extends helically and its sides
are formed by inwardly extending side edges or
walls 24 which, in any given transverse plane, ex
tend as illustratedin Figures 3, 4, and 5.. Brush
a surface covering undergoing cleaning. Agi
element 25 comprises ?exible bristles 26 which are
tating means dislodge the foreign material and
?rmly imbedded in a back 21 which is transversely
the air flow carries that material from the sur
face to a suitable receptacle which ?lters it from 50 curved to conform to the curvature of‘ the cylin
drical body I8, as indicated at 28, and is formed
the air, permitting the latter to escape into the
a rounded projecting lower bulbous portion
atmosphere. The usual agitating means of the’ . with
29 which is separated from the top surface 28 by
modern suction cleaner comprises a rotatable
a pair of parallel longitudinally extending V
agitator or brush. If the agitator or brush in
the brush body.
The modern suction cleaner relies upon agita
tion and air ?ow to remove foreign material from
cludes ?exible brush elements, which preferably
sectioned slots 33.
The back 21 is formed as an elongated straight
' 2,411,488
body, as illustrated in Figure 2, of a material
which is resilient and deformable and therefore
adapted to be deformed into the curvature of the
helical brush seat IS.
The seating of the brush element 25 in its seat
I8 is in the manner illustrated in Figures 3, 4, and
5. One end of the brush at 21 is first forced
4 -_
brush and a wedging action will result in the slid
ing of one corner of the bulbous portion 29 from
, its seat to the position illustrated in Figure 4,
after which the entire brush element can be dis
placed by suitable withdrawing force applied and
e?ective on the dislodged end.
‘ I claim:
downwardly through the conical opening formed
In a rotary agitator for a suction cleaner, a
by the side walls 24 of the seat I9 which, because
cylindrical body, a helically extending brush
of their inward extension, act as a funnel. The .10 seat having closed ends, formed by apposed in
brush back 21 ‘being soft and deformable can be
wardly sloping side walls, positioned permanent
wedged through the brush seat in the manner 11- _
ly in said body and which intersects at an angle
lustrated in Figure 4 one side slot or groove 30
a transverse plane‘ through said body perpen
enabling the adjacent face of the rounded portion
29 to be forced through the opening, whereupon
dicular to the major axis thereof, and a normally
straight brush including ?exible non-compressi
a downward force upon the opposite side of the
, ble bristles seated in a back of deformable mate
back results in theentire bulbous portion 29 be
1118 Projected throughthe seat or slot 19 into the
relationship illustrated in Figure 5, after which
rial such as resilient rubber, said back being di
vided by longitudinally extending V-shaped
grooves into a top portion and a backing portion,
the entire length of the back is advanced into its 20 said back being sufficiently ?exible to enable said
seat. Once positioned therein the natural resil
ience and. ?exibility 0f the bulbous portion 29
‘ brush to curve helically, and said backing portion
being sufficiently compressible to enable it‘to be
causes it to fill completely the seat l9, as illus
deformed and inserted radially between said side
trated in Figure 5, and it is impossible for the
‘element to be displaced from its seat under the 25 walls of said brush seat, said grooves being shaped
as to lie ?at upon the surface of said inwardly
action of centrifugal force in the'high speed rota
sloping side walls and being su?‘iciently spaced
' tion of the agitator. The sides of the grooves 30
as to provide a back thickness'which ?ts between
lie flush with the seat side walls 24 and a tight
fit is present which prevents foreign material
from entering the agitator body.
Displacement of the brush from the ‘seat re
quires the use of a tool such as a screw driver
and the insertion of one edge thereof under and
into the V-shaped slot l9 adjacent one edge of the
said walls with a clamping and sealing action,
said backing portion also being suf‘?ciently resil
ient and of such sizeas to expand and underlie
said side walls.
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