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Патент USA US2409079

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Oct. 8, ì946°
E. R. SWANN
sUcTIoN CLEANER
Filed oct. 15, 1945 `
' s sheets-sheet 1
@at 8, 1946.
E. R. swANN
2,409,078
SUCTION CLEANER
FiledY Oct. 13, 1945
3 Sheets-Sheet
25
‘75
§63
` fßv’eßzlof”
Edward já’. Saya/We
@et 8, 194@
YE. R. swANN
2,409,078,
sUcT'IoN CLEANER
Filed Oct. l5, 1945
3 Sheets-Sheet 3
fifa/*veeg
Patented Oct. 8, 1946
2,409,973
unirse s'rA'res PATENT Aorifice
'2,499,078
`sperren CLEANER
adware n. Swann, Fiorai rai-k, N. 1v., assigner@
The Hoover Company, North Canton, Ohio, a ~
corporation .of Ohio _`
Application October 13, 1943, Serial No. 586,043
(Cl. 18S-71)
l
2
The present invention relates to suction clean- Y 1
ers and more particularly to a älter and its ar.
rangement in the suction cleaner.
An object of the invention is to provide a new
and improved suction cleaner.
Another object
is to provide a iilter having a corrugated ñlter
ing area with ridges and depressions, the ends of
the ridges terminating in the plane of the mar
ginal edge of the ñlter for attachment in a suc
tion cleaner. A further object is toprovide a
filter formed of paper folded into a corrugated J
filtering area and having the ends of the ridges
folded into one plane surface. Another object is
walls t2 and cooperates with the latter, the bot
tom wall H and front wall I4 to form a com
partment 26 for the reception of the dirt recep
tacle l5. The dirt receptacle lhas a bottom wall
21, opposed sidewalls 28, rea-r Wall 29 and a front
wall 3G, the side and rear walls having their
-marginal -edges -outwardly flanged at 3l for en
gagement with the casing side walls l2 and with
the partition 25 to hold the receptacle in posi
tion in the casing ID. A latch is mounted on the
casing front wall i4 _and is provided with a piv
oted arm 3‘2 which engages a catch 33 on the
dirt receptacle front wall 30 to lock the recep
tacle in the casing Hi. An air inlet conduit 35
is mounted on the dirt `receptacle front Wall 3%
and communicates with an opening 36 in the
latter exposed lto the dirt receptacle, while a flex
ible hose El is removably connected to the con
duit 35. A suitable surface cleaning tool 38, only
to provide a method for foldin a sheet of paper
into a corrugated ñltering area with the ends of
the ridges folded and glued into the plane of the
depressions to thus form the corrugated surface.
Other objects and advantages of the invention
will be apparent from the following specification
and drawings, wherein:
20 partially shown, is connected to the opposite end
Figure l is a longitudinal section of the suc
of the hose Slforfcleaning -surfaces as is well
tion cleaner and showing in dotted lines the suc
tion cleaner cover and the ñlter supporting struc
known in the art.
Mounted within the cover Il between the side
Walls is a partition 48, and secured to ‘the latter
and depending walls of the cover I7 is an L
shaped bracket 4| having a ñange 42 extending
in one plane. «Spaced rods 43 extend longitudi
nally of the cover I'I and have their yopposite ends
ture in open position;
Figure 2 is a section along the line 2_2 of
Figure 1;
Figure 3 is a section along the line 3_3 of
Figure l ;
Figure e is a fragmentary perspective View of
44 supported von the ñange 42 of the bracket 4|,
the corrugated ñlter showing the ends of the> 30 and the intermediate portions 45 vof the rods 43
corrugations folded into the plane oi the mar- 1' .
project beyond theplane ofthe ends of 4the rods
ginal edge of the filter;
Figure 5 is a fragmentary top plan View of
the sheet of filter material prior to being folded,
43 into .the compartment .26 when the cover His
closed.
and
Figure 6 is an end View of the corrugated ñlter
showing the ends of the ridges folded and glued
in the plane of the marginal edge of the ñlter.
The embodiment of the invention herein dis
closed comprises a suction cleaner provided with
a rectangular casing lâ having a bottom wall
li, a pair of opposed side Walls l2, a rear Wall
£3 and a front wall irl, the latter being provided
with an opening for the removable reception of
a dust and dirt receptacle l5, and the bottom
Wall Il being formed at its longitudinal corners
with projecting ribs forming a pair of runners I6
which Support the cleaner. The casing is closed
by a cover il’ pivoted at i8 on the rear casing
wall I3 and is provided at its front end with a
latch Iâ which removably engages a catch 2li
mounted on the casing front wall i4, and a han
die 2| is mounted on the cover il for carrying
the suction cleaner.
A partition 25 extends between the casing side
A paper filter 4'! permeable to air, but not to'
dust
and dirt, is provided with >a corrugated ñl
35
. Y tering area having alternate longitudinally eX
tending ridges 48 and `depressions 49. The paper
ñlter is formed from -a single sheet .of paper 5t,
as shown in Figures 4 to 6, and is folded along
`the alternate .lines 5I to form the depressions 49
in the corrugated ñltering surface, and the paper
is then folded along .the lines 52 to vform the
ridges i8. Triangular areas 53 Vare provided at
Ythe opposite ends »of the ridge lines 52 by a pair
45 of diverging lines 53 extending to the marginal
edge of vthe paper, and the paper is -folded along
the diverging lines 54 »over the shaded portions AE5
and glued Ytogether as indicated at 56, and the
resulting adjacent Afolds 5l are glued to the por
tion 58V of the paper as indicated at 59. By
forming the adjacent folds 51 and gluing them
together, that portion of the pa-per between the
adjacent ridge lines 52 is drawn together which
causes the paper to become corrugated forming
55 the ridges 48 and the depressions 4S. The trian
2,409,078
3
gular areas 53 being also glued at the marginal
the filter 41 and thence through the elongated
edge of the paper causes the triangular areas to
be inclined from the marginal edge of the paper
to the ridges 48 and serve to maintain the ridges
opening 13 to the eye 16 of the fan chamber,
and the air is expelled into the chamber 68 and
43 in projected position relative to the depres
sions 49. It will be noted that the ridges 48 and
thence through the ports 82 and 8l to ventilate
the motor, and all of the air is exhausted
through the air conduit 82. During the clean~
ing operation, the filter supporting rods 43 main
depressions 49 terminate in one plane at the
tain the ridges 48 in the filter 41 against the
marginal edge of the filter.
force of the air stream, and the force of the
The filter 41 is supported in the casing I0 by
placing the marginal edge on the flange 63 of a 10 latter maintains the depressions 49 in the filter.
bracket 64 mounted on the casing front and side
walls and the partition 25, and the ridges 48 of
the filter project into the compartment 26, while Y
the depressions 49 lie in the plane of the mar
ginal edge of the filter 41. The rods 43 fit in the 15
ridges 48 of the filter and maintain the ridges
in proper position against the force of the dir_t
In order to clean the dirt receptacle the latch
arm 32 isv rotated and the receptacle removed
by pulling on the inlet conduit 35. When it is
desired to remove the filter 41, the latch I9 is
unlocked and the cover I1 raised to the dotted
line position shown in Figure l, and the filter is
removed from the fiat flanged surface 63 of the
bracket 64. To replace the filter, the marginal
laden air as it travels in the direction indicated
edge of the latter is arranged on the flat flange
by the arrows in Figures 1 and 3. The filter 41
is clamped at its marginal edge between the 20 63 with the filter ridges 45S projecting into the
compartment 26, and thereafter the cover I1 is
ñanges 42 and 63 of the brackets 4| and 64,
closed whereby the rods 43 enter the ridges 48 of
respectively, when the cover I1 is locked in posi
the ñlter. When the latch I9 is locked, the
tion. An air-tight seal is provided adjacent the
marginal edge of the filter is clamped in one
marginal edge of the filter by means of a rubber
65 supported in the bracket 64 and engages the 25 plane between the two flat flanges 42 and 63
of the brackets 4I and 64, respectively, and the
fiange 42 when the cover I1 is locked in posi
rubber 65 provides an air seal between the cover
tion.
I1 and the lower part of the casing.
A compartment 68 is formed in the casing by
I claim:
the partition 25, the casing side walls I2, rear
1. A suction cleaner comprising a casing, a
wall I3 and bottom wall II. A vertically ar 30
movable cover for said casing, a filter having
ranged motor in the compartment 68 has its
elongated corrugations including alternate ridges
housing 69 provided with a flange 10 which is>
and depressions each terminating at their op
removably supported on a bracket 1I mounted on
posite ends in one plane 'at the marginal edge
the casing I I] and partition 25. Mounted above
the motor on the armature shaft is a dual-stage 35 of said filter, cooperating means on said cover
and casing each in one plane, closing said cover
suction creating fan 12 enclosed in a fan housing
clamping said marginal edge of said filter in one
13 supported by screws 14 on the motor housing
plane, and a filter supporting frame mounted in
69. An annular bracket 15 positions the fan
said cover and movable therewith, closing said
housing 13 in the compartment 68 and provides
an air tight seal between the upper end of the 40 cover positioning said frame only in the said
ridges of said ñlter to support said ridges against
fan housing 13 and the adjacent walls of the
the force of said air stream and said depressions
compartment 68. The fan housing 13 has a
unsupported.
fan eye 16 which communicates through a pas
2. In a suction cleaner, a casing having an
fsageway 11 with an elongated opening 18 in the
partition 40, the passageway 11 being formed by 45 opening, a filter closing said opening, said filter
having elongated corrugations including alter
the partition 40, cover I1 and the fan housing
nate ridges and depressions each terminating at
13. Annularly arranged in the fan housing 13
their opposite ends in the same plane, means on
are air outlet ports 19 which exhaust air _into
which the marginal edge of said filter rests to
the compartment 68 and thence to inlet ports 80'
in the motor housing 69 from which the air is 50 -close said opening, and a filter supporting frame
movably mounted on said casing and movable
exhausted through ports 8l to thus cool the
into operative position to arrange said frame in
motor. The filtered air discharged by the fan
said ridges of said filter but leaving said depres
passes through an opening 83 connected to an
sions unsupported, said marginal edge of said
exhaust conduit 82 mounted on the casing rear
wall I3, and an arcuate wall 84 guides the air 55 filter being the sole support of said ridges and
depressions when said supporting frame is moved
A hose 85, only partially
to inoperative position.
shown, may be connected to the conduit 82 when
it is desired to clean surfaces by blowing air
3. In a suction cleaner, a casing having an
as will be understood by those experienced in
opening, a filter removably closing said opening,
the art.
60 said filter having elongated corrugations includ~
In operation, assume the casing cover I1 is
ing alternate ridges and depressions each ter
closed and the motor and fan operating. The
minating at their opposite ends in the same plane,
suction caused by the rotating fan draws dirt
means for supporting the marginal edge of said
laden air from the surface being cleaned through
the cleaning tool 38, hose 31 into the compart 65 filter to close said opening, a cover plvotally
mounted on said casing, a filter supporting frame
ment 26 and the dirt-laden air strikes the sur
carried by said cover and arranged with respect
face of the filter 41 exposed to the dirt receptacle
to said filter to support said ridges of said filter
I5. The filter 41 removes the dirt and dust from
but leaving said depressions unsupported when
the air and the dirt particles drop into the re-v
ceptacle I5 as indicated at 85. Heavy particles 70 said cover is in closed position, said cover mov
-able to open position to remove said frame from
of dirt may drop directly into the receptacle I5
said filter whereby said depressions and ridges
without striking the filter 41 due to the enlarged
are unsupported for removal of said filter from
area of the compartment 26 relative to the hose
lsaid marginal ñlter supporting means.
31. The filtered air passes through the air pas
EDWARD R. SWANN.
sageway 86 disposed between the cover I1 andl 75
to the opening 83.
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