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Патент USA US2127051

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Aug. 16, 1938.
(2.1.. ATKINSON
2,127,051
WALL CLEANING APPARATUS
. Original Filed Aug.’ 16, 1935
27
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.16
25
2 Sheets-Sheet l
Aug. 16, 1938.
'
c. |_. ATKINSON
. 2,127,051
WALL CLEANING APPARATUS
’
Original Filed Aug. 16, 1935
2 Sheets-Sheet 2
,
amm
C- L . ?ikinson .
Patented Aug. 16, 1938
2,127,951
UNlTED STATES
PATENT orgies
2,127,051
WALL CLEANING APPARATUS
Charles L. Atkinson, Cynthiana, Ky.
Application August 16, 1935, Serial No. 36,589
Renewed January 25, 1938
2 Claims. ( CI. 15-98)
This invention relates to cleaning apparatus The sections comprising the casing
are pro—
and more particularly to a device for cleaning
vided
with
laterally
extending
?anges
l
in
which
walls of buildings and the like.
are mounted suitable anti-friction bearings 8 and
The object of the invention is to provide a extending
through said bearings is a horizontally
5‘ comparatively simple and inexpensive device of dsposed shaft
9, as best shown in Figure l of the
this character by means of which the walls of a drawings. Surrounding each end of the shaft 9 (IX
building or other structure may be cleaned in a
are cylindrical supporting members It! preferably
more e?icient and economical manner than here
formed of wood, although they may, if desirect'be
tofore.
constructed of light metal or other suitable mate
A further object of the invention is to provide
a wall cleaning device including a rotary cleaning rial. The ends of the cylinders ii! are formed
with seating recesses H which receive the adja
element having tapered or conical ends to facili
cent ends of the shaft 9, said ends being threaded,
tate cleaning corners and other places inaccessi~ as indicated at 12, for engagement with clamp
ble with the ordinary blunt-ended cleaning head, ing nuts [3 which, in turn, bear against wear
means being provided for rotating the cleaning
plates or washers IL! in the recesses H and serve
element as it is drawn over a wall or other sur
to clamp the cylinders in engagement with the
face to be cleaned.
shaft to rotate therewith. Surrounding the cyl
A further object is to construct the cleaning inders I0 is a cleaning element l5 preferably
element in two sections, each formed of sponge formed of sponge rubber and made in two sec
20 rubber and adapted to fit over and snugly engage
suitable supporting cylinders driven from a
source of motive power, the inner walls of the
sections being lined with live rubber to strength
en the sponge rubber and cause the sections to
?rmly adhere to their supporting cylinders.
A still further object of the invention is gen
erally to improve this class of devices so as to
increase their utility, durability and e?iciency.
In the accompanying drawings forming a part
30 of this speci?cation and in which similar nu
merals of reference indicate corresponding parts
in all the ?gures of the drawings,
Figure 1 is a vertical sectional view partly in
elevation of a rotary wall cleaning apparatus con
structed in accordance with the present inven
tion.
Figure 2 is a vertical sectional View taken on
the line 2—2 of Figure 1.
Figure 3 is a top plan view showing the man,
40 ner of cleaning the walls at the corner of a room.
Figure 4 is a bottom view of Figure 1.
Figure 5 is a side elevation illustrating a modi
?ed form of the invention particularly adapted
for commercial use.
The improved wall cleaning apparatus form
ing the subject-matter of the present invention
may be used for either domestic or commercial
use and in Figure 1 of the drawings there is illus
trated one embodiment of the invention espe
50 cially designed for domestic use. The device
comprises a casing or housing 5 preferably
formed in two sections detachably connected by
screws or similar fastening devices 6 so that the
parts may be readily separated in order to obtain
' access to the interior of the casing when desired.
tions, as shown. The outer end of each section 20
of the cleaning element I5 is tapered or conical,
as indicated at l6, so as to permit the cleaning
element to enter corners and other places inac
cessible with the ordinary blunt-ended cleaning
head, this position of the tool being clearly shown
in Figure 3 of the drawings. The inner wall of
each section of the cleaning element I5 is pro
vided with a thin sheet of live rubber ll pref
erably vulcanized to the sponge rubber and which
serves to reinforce the latter and cause close ad- °
hesion between the sections of the cleaning ele~
ment and their respective supporting cylinders.
Keyed or otherwise secured to the central por
tion of the shaft 9 and disposed within the casing
5 is a worm gear l8 which meshes with a worm "
I9 on a stub shaft 20. The opposite ends of the
stub shaft 20 are journaled in‘ suitable ball bear
ings 2| and the lower end of the stub shaft is
provided with a square socket 22 which receives
the correspondingly squared end of a vertical
power shaft 23 leading to an electric or other type
of portable motor, indicated at 21%. Surrounding
the shaft 23 and preferably formed integral with
the casing 5 is a tubular housing 25, the lower
end of which ?ts over a boss 26 on the motor 2%
and is secured thereto by a clamping screw 2?.
The motor 24 is provided with a suitable switch
28 connected with an electrical conductor 29
leading to a cut-in plug so that the device may
be conveniently connected in a house circuit.
It ’
will here be noted that inasmuch as the sections
comprising the cleaning element are of sponge
rubber and lined with live rubber, said sections
when positioned over the cylinders will friction
ally engage the same to rotate therewith but can 55
2,127,051
2
be easily removed for repairs or replacement by
exerting a-slight longitudinal pull on the sections
until they become disengaged from the cylinders.
In operation, the apparatus is supported in
the hand with the cleaning element in contact
with the wall or other surface to be cleaned and
as said cleaning element is moved over the sur
face of the wall, the rapid rotation of the clean
ing element will effectually remove dirt, grease,
10 and other foreign matter which may have ad
hered thereto so as to render the walls_clean,
fresh, and sanitary. When cleaning the walls
at the corners of a room, either conical end of
the cleaning element is positioned in the corner
15 of the room and as the cleaning element is ro
tating at a rapid speed, all dirt or foreign matter
will be removed from said corners.
,, In Figure 5 of the drawings there is illustrated
a modi?ed form of the invention particularly
adapted for commercial use in which motion is
imparted from a stationary motor 30 through the
medium of a ?exible cable 3‘! to the cleaning
element 32, the construction and operation of
the device being otherwise similar to that shown
25 in Figure l of the drawings.
‘The devices may be made in different sizes
and shapes and constructed of any suitable ma
terial without departing from the spirit of the
invention. It will also be understood that while
30 I have shown a worm and worm gear for driving
the horizontal shaft, any other desired form of
gearing may be employed for transmitting power
from the motor to said cleaning element.
Having thus described the invention, what is
35 claimed as new is:
1. A cleaning device comprising a tubular han
dle, a casing at the front end of said handle, a
shaft extending through the casing transversely
thereof with portions projecting from opposite
sides of the casing and provided with threaded
49 terminals, annular collars projecting from sides
of said casing about said shaft, bearings for said
shaft surrounded by said collars, supporting cyl
inders surrounding the projecting portions of the
shaft and movable therewith, inner ends of the
cylinders being formed with pockets snugly re
ceiving the collars and the bearings, the outer
ends of said cylinders being formed with seating
recesses, washers ?tting over the ends of the
shaft within the recesses, nuts engaging the
threaded terminals of the shaft within the re
cesses and bearing against the washers, cleaning
elements ?tting snugly about the supporting cyl- ~
inders, a worm gear secured to the intermediate
portion of the shaft and housed within the eas
ing, a worm meshing with the gear wheel, a stub
shaft in said casing on which the Worm is mount
ed, said stub shaft having its rear end extending
into said handle and provided with a socket, a
motor, and a power shaft having one end thereof
connected with the motor, said motor shaft ex
tending longitudinally through said handle and
having its front end ?tting in said socket.
20
2. A cleaning device comprising a stationary
casing having detachably connected side sec
tions and a tubular handle, annular ?anges ex
tending from opposite sides of said casing, ball
bearings seated in said flanges, a shaft extending
through the casing and said ball bearings with
portions projecting from opposite sides of the
casing and provided with threaded terminals,
supporting cylinders surrounding the projecting
portions of said shaft and provided with seating 80
recesses at their outer ends, nuts disposed within
said seating recesses and engaging the threaded
ends of the shaft, a gear wheel secured to the
intermediate portion of the shaft and disposed
within the casing, a stub shaft in said casing ex
tending transversely of the ?rst shaft, ball bear
ings for
opposite ends of the stub shaft, a
pinion carried by the stub shaft and meshing
with the gear wheel, a motor, and a power shaft
extending longitudinally through said handle and
connecting the motor with the stub shaft. '
CHARLES L. ATKINSON.
35
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