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Oct. 8, 1946.
2,
L. K. ACHESON
,008
SUCTION CLEANER
4 Sheets-Sheet 1
Filed April 26, 1943
‘F53’
-
INVENTOR,
Zowz's KAck @smz
"
ATTORNEY
m s, 1346,
2,409,008.
1.. K. AGHESON
SU CTION CLEANER
Filed April v26. 1943
4 Shea'ts-Sheat 2
INVENTOR.
Zouz's KAcizeson
ATTORNEY
~
vi. 8, i945.
-
'
L, K, ACHESQN
,
2,499,008
SUCTION CLEANER
Filad April 26, 1943
1
4 Sheets-Shasta 3
'
INVENTOR.
" Zoués iiiAmgeeson
91$ 5» 3945-
L. K. ACHESON
_72,409,998
SUCTION CLEANER
‘
Filed'April 26. 1943
"
-
4 SheetsSm-LF:
.94
Zoazls KAclz eson
BY
‘
W
ATTORNEY,
2,409,008
Patented Oct. 8, 1946
UNITED STATES PATENT OFFICE
2,409,008
SUCTION CLEANER
Louis K. Acheson, North Canton, Ohio, assignor
to The Hoover Company, North Canton, ()hio,
a corporation of Ohio
Application April 26, 1943, Serial No. 484,511
15 Claims.
(Cl. 15—16)
2
1
This invention relates to suction cleaners in
general and more particularly to a new and
conduit connecting the ?lter-cleaning nozzle with
the initial dirt separator;
'
suction-creating means, a ?nal dirt separator
which receives air from the suction-creating
Figure 5 is an exploded view of the air-actuated
driving means for the ?lter-[cleaning nozzle;
Figure 6 is a section upon the line 6-6 of Fig
ure 1 and shows the main cleaning nozzle with
seal-breaking means embodied therein;
Figure 7 is a view in perspective of the con
actuated in a, new and novel manner.
weight-actuated switch;
novel arrangement of parts in a suction cleaner.
More speci?cally, the invention comprises im
proved actuating means in a suction cleaner of
the type embodying an initial dirt separator,
struction of Figure 6;
means, and a cleaning nOZZle for the ?nal sepa
Figure 8 is a vertical section through a cleaner
10
rator.
constructed in accordance with the second pre
It is an object of the present invention to pro
ferred embodiment of the invention;
vide a new and improved suction cleaner. It is
Figure 9 is a transverse section upon the line
another object of the invention to provide a new
9-4! of Figure 8 and discloses the electrical actu
and improved suction cleaner of the type em
ating means for the ?lter-cleaning nozzle;
bodying initial dirt separating means, air-moving
Figure 10 is a section upon the line l9-=I0 of
means, ?nal dirt-separating means, and means to
Figure 11 and shows the mounting of the bob
clean the ?nal dirt-separating means which are
A still
Figure 11 is a view looking in the direction of
further object of the invention is to provide a
suction cleaner having a plurality of dirt sepa 20 the arrows upon the line ll—ll in Figure 8 and
shows the bob-weight-actuated switch in side
rators in combination with means to clean the
?nal dirt separator upon each reoccurrence of
elevation; and
Figure 12 is a diagrammatic showing of the
a cleaner operational characteristic. A still fur
ther object of the invention is to provide a suc
electrical connections of the cleaner constructed
tion cleaner in which the ?nal dirt separator is 25 in accordance with the second embodiment of the
cleaned by a ?lter-cleaning nozzle which is actu
invention.
‘
ated in cleaner operation by the reoccurrence of
Suction cleaners relying upon mechanical dirt
a characteristic of that operation, means being
separators, as for example separators relying
provided to provide such reoccurrence. A still
upon centrifugal force to separate the dirt from
further object of the invention is to provide a
the cleaning air, have been known in the suction
suction cleaner having an initial dirt separator,
cleaner art for a considerable period of time.
suction-creating means, and a ?nal dirt separa
The cleaner of this type which also embodies a
tor in combination with air-pressure-driven
second dirt separator intended to remove that
means for cleaning the ?nal ?lter. A still fur
small percentage of escaped foreign material
ther object of the invention is to provide a suc
which has passed through an initial separator is
tion cleaner having an initial dirt separator, suc
tion-creating means, and a ?nal dirt separator in
combination with a ?lter-cleaning nozzle which
is provided with a step-by-step movement. These
and other more speci?c objects will appear upon
reading the following speci?cations and claims
and upon considering in connection therewith
the attached drawings to which they relate.
dis-closed in the patent to Bible original number
2,247,472 reissued June 22, 1943, as Fe. 22,336.
The invention here disclosed is an improvement
upon that type of machine and has the advan
tage of the provision of means which are auto
matically actuated upon the recurrence of an
operational characteristic of the machine.
In the cleaner constructed in accordance with
Referring now to the drawings in which pre
the present invention it is not necessary for the
45
ferred embodiments of the invention are dis
operator to elect to clean the ?nal ?lter as in the
closed:
Bible construction but instead this necessary step
Figure l is a vertical section through a’ suction
is accomplished automatically by the machine.
cleaner constructed in accordance with the pres
In one embodiment of the invention the ?lter
ent invention;
cleaning nozzle is actuated by an air motor, while
Figure 2 is a transverse horizontal section
upon the line 2-2 of Figure 1;
Figure 3 is a section upon the line 3-3 of
Figure 1;
Figure 4 is a partial section through the cleaner
upon the line 4-4 of Figure 2 and shows the air
in another embodiment the actuation is accom
plished by the use of electrical solenoids. In
neither embodiment is it necessary for the oper
ator to connect the ?lter-cleaning nozzle to the
source of low pressure in the machine to e?ect
2,409,008
the movement of cleaning air through that
nozzle.
Referring again to the drawings and to Figures
4
32 is supported at its lower end by a ?anged
collar 33 ?xedly carried by the casing 8. At its
upper end ?lter 32 is carried by a shouldered
1 to 7 in particular the ?rst preferred embodi
portion of a centrally apertured and ?anged plate
ment of the invention is illustrated. A cylindri
34 which seats in sealing relationship upon the
cal main casing l seats, at its centrally apertured
lower end of the casing of motor 29 and which is
and ?anged bottom plate 2, upon a supporting
itself ?xed in spaced relationship to the enclosing
base 3 which seats a removable dirt pan or con
main casing l by means of spiders 36 which may
tainer 4,-the upper peripheral edges of which are
be integrally formed. Collar 33 and upper plate
in sealed contact with the bottom plate 2. The 10 34 form end enclosures for the ?lter chamber 3|
upper end of the cylindrical casing l is closed by
and air escaping therefrom must pass outwardly
a motor hood 6 which includes an inwardly
through the ?lter element 32 into that space be
?anged motor-supporting wall 1.
tween the ?lter and the main casing l which
Positioned concentrically within the main cas
space is indicated by the reference character 31
ing l is a smaller cylindrical casing 9 which is
and which will be referred to as the discharge
carried by the inner ?anged peripheral edge of
1 chamber.
the bottom plate 2 of the casing l. A transverse
Discharge chamber 37 is closed at its upper
closure wall I! divides the cylindrical casing 9
end by the plate 1 and at its lower end by the
into a lower whirl chamber l2 and upper fan
bottom plate 2 of casing l and the only escape
chamber IS, the latter being itself divided into
therefrom is afforded by the apertures 33 formed
a lower stage and an upper stage by a centrally
in the casing of motor 29 upon the opposite sides
positioned de?ector l4. De?ector I4 is formed
of the supporting wall 1 in the hood 6. Air enter
with a multiplicity of ?xed guide vanes which
ing the lower apertures 38 passes upwardly
function to direct the air to the central inlet
through the motor casing and escapes from the
formed therein and which is indicated as l5. The 25 upper apertures and effects a cooling of the motor
top of the fan chamber I3 is closed by cover plate
in doing so which is desirable. The motor hood
I‘! of the cylindrical casing 9 while the bottom
6 above the plate ‘I is provided with an exhaust
of the fan chamber is provided with a down
port 39 adapted to receive and seat a dusting tool
wardly extending elongated inlet l8 which reaches
unit Whenit is desired to use the cleaner as a
downwardly beyond the mid-portion of the whirl
blowing unit and serves at all times as the cleaner
chamber l2. Vertically spaced spiders [9 within
exhaust port. Incidentally, the driving motor 29
inlet I8 support a downwardly extending rod 23
is provided with incoming power leads 4| which
carrying a transverse pan-closing plate 2| at its
are connected to a suitable manually operable
lower end and a strainer 22 immediately below
switch 42 to enable the operator to control the
the lower spider l9. Plate 2| is spaced inwardly 35 operation of the motor and so of the entire
from the wall of casing 9 and provides a periph
cleaner.
eral opening through which the foreign material
The machine which has hereinbefore been de
can drop from the whirl chamber into the dirt
scribed comprises'a completely operative cleaner
pan 4 while the strainer 22 prevents the passage
but has the inherent defect that no means have
upwardly into the suction-creating fan chamber 40 been provided to clean the ?lter 32. To accom
[3 of large size foreign objects.
plish this desirable result there is provided, in
The inlet of the cleaner comprises a port 23
accordance with applicant’s invention, an elon
which is adapted to receive and seat the cleaner
gated nozzle 46 the length of which is substan
end of a dusting tool hose 5 which at its outer
tially equal to the height of the ?lter element
end carries a suitable cleaning nozzle [0. Inlet 45 and which is adapted to make sliding contact
23 passes inwardly through the outer cylindrical
therewith. Nozzle 46 has a ?lter-contacting
casing l and connects directly to an inlet cham
opening or mouth which contacts only a limited
ber 24 which opens tangentially into the whirl
area of the ?lter element 32 in any one position
chamber l2. The construction is such that air
and accordingly means are provided to move the
entering through the inlet 23 and chamber 24 50 nozzle relative to the ?lter. This is accomplished
enters the whirl chamber tangentially resulting
by supporting nozzle 45 by a rotatable conduit
in a circular rotary movement of the air which
seat 41 which encloses a vertical sleeve 49 which
tends to throw the foreign material outwardly
houses a motor shaft 28. Conduit 4‘! is formed
and permits it to drop downwardly and into the
at its inner end with a downwardly facing cir
dirt pan 4.
55 cular seat which is rotatably supported upon a
Within the suction-creating fan chamber I3 is
bearing 5i carried by the similarly shaped up
positioned a two-stage fan comprising a lower
wardly opening mouth of a stationary conduit
rotary fan 26 and an upper fan 21, both carried
52. A second bearing 50 carried by conduit seat
by the downwardly depending shaft 28 of a motor
41 mounts the latter rotatably upon the sleeve
29 which is carried by the wall ‘I and is positioned 60 49. Conduit 52, however, is ?xedly mounted upon
partially within the motor hood 6 and partially
the fan chamber top plate I’! in ?xed relation
within the upper end of casing l. The rotation
ship and extends across the top thereof and down
of the motor shaft 28 causes the tandem fans 26
the side of the fan chamber and connects to the
and 21' to draw cleaning air in through the inlet
entrance of the inlet chamber 24 of the whirl
port 23 and to remove the cleaned air upwardly
chamber 12.
through the inlet I8 into the fan chamber from
Filter-cleaning nozzle 46 'is entirely uncon
which it is exhausted through suitable ports 35
nected to the driving-motor 29 and to provide
into a surrounding chamber which is indicated
actuating means therefor which will propel it
at 3| and which will be called the final ?lter
around the inner surface of the ?lter 32 there is
chamber for a reason which will become appar
an air motor.
ent. De?ning the side wall of the ?nal ?lter
chamber 3| and spaced inwardly from the en
closing main casing l is a cylindrical ?lter ele
ment 32 formed of suitable air-permeable dirt
impermeable material such as ?lter cloth. Filter 75
cup-shaped casing 54 secured to the underside
of closure Wall 34‘of?nal ?lter chamber 3| and
This motor is located within a
sealed by a seal 56 to the peripheral wall of a
contoured plate 51 ?xedly carried by the conduit
seat 41 of the nozzle 46, A large ratchet gear
2,409,008
58 is ?xedly secured to the top surface of the
plate 51, the gear, the plate 51 and the conduit
seat 41 with the nozzledt being rotatable as a
unit on the bearings 59 and 5|. To insure the
6
ward movement of the bottom plate of the bel
lows causes the lever ‘H to move in a clockwise
direction and the pin 74 to return to its original
position without movement of the ratchet ring
seating of the conduit seat upon the bearing 5: 5 58 and into position to engage a new tooth of that
ring upon the subsequent and next collapse of the
there is provided a coil spring 59 which encircles
bellows. A plurality of bell crank levers ‘H are
the bearing 58 and exerts a force between the
indicated in Figure l and a suf?cient number is
?anged end thereof and the surface of the con
provided to insure a positive action, the exact
duit seat 47.
number used not being of the essence.
The air- motor comprises an air-tight ?exible
To insure that the air pressure within the bel
bellows (H which encircles the motor 2.‘! at its
lows El will vary with regularity during cleaner
lower end and within the cup-shaped casing 54.
operation means are provided to insure the vari
The walls of bellows ti are formed of rubber or
ation of that pressure within the inlet 23 and
suitable air-tight air~impervious material which
is su?lciently ?exible as to be expansible under 15 inlet chamber 24. These means comprise a rock
plate 15 which is pivotally mounted within the
changes of pressure which are within the range
mouth of the cleaner nozzle Ill being adapted to
of the pressures found in a suction cleaner. Bel
pivot from side to side of the mouth as illustrated
lows BI is provided with a rigid top plate 62 ?x
in Figures 6 and 7. Upon the forward movement
edly secured to a closure plate 63 forming the
top of the cup-shapedv casing 54. A lower bellows 20 of the nozzle over a surface being cleaned ‘the
rock plate will be pivoted'to the rearmost dotted
plate 66 is also rigid and is ?xedly attached to
line position illustrated in Figure 6 and will re
an exterior bottom plate 66. Bellows ii! is inte
main there during the entire forward stroke.
riorly connected to the entrance to the inlet
Upon the reversal of the direction of the nozzle
chamber 24 of whirl chamber l2 by means of an
air conduit 5'! which, as illustrated. in Figure 1, 25 movement the frictional contact of the rock plate
with the surface will cause the plate to move from
may be made of rubber or other suitable mate
the right hand position illustrated in Figure 6,
rial which connects to nipples 68 and 65 carried
through the central dotted line position, to the
by the top plate 52 of the bellows and the inlet
full line position shown in the same ?gure. As
conduit 23, respectively.
With the machine in operation and a reduced 30 illustrated in Figure 6 when in the vertical posi
tion the rock plate extends considerably below
pressure existing within the intake port 23 and
the plane of the nozzle mouth and, being in con
intake chamber 24 that pressure is also present
tact itself with the supporting surface covering
within the bellows 2d by virtue of the conduit con
undergoing cleaning, would in this position raise
nection El and the bellows is contracted, being
the nozzle mouth from its sealing contact with
moved to a collapsed condition from the expand
the surface covering. This breaking of the noz
ed or lower position illustrated in Figure 1, Sur?
zle seal permits an inrush of air into the cleaner
cient reduction of pressure is present within the
which effects an increase in the pressure present
bellows Si to collapse it whenever the cleaning
at the inlet 23 and inlet chamber 24 and directly
nozzle It is sealed against a surface undergoing
cleaning, but upon the breaking of that seal the 40 produces an increase in pressure in the bellows
El and causes its expansion, This nozzle-lifting
inrush of air raises the pressure and the bellows
action of the rocker plate ‘l6 occurs only upon
expands, the weight of the lower plates 64 and 65
reversal in direction of nozzle travel which occurs
being sufficient to accomplish this expansion al
at each end of each operational stroke. During
though additional resilient expanding means can
be provided if necessary. The expanding move 45 nozzle movement and excepting the period of
direction reversal at the end ofeach stroke plate
ment of the bellows 6! is transmitted to the noz
‘it lies against one wall of nozzle [0, as illustrated
zle-connected ratchet ring 53 by means of a bell
in full lines in Figure 6, and its lower edge forms
crank lever ‘H which is centrally pivoted upon
a continuation of the adjacent nozzle lip pro
a bracket 1?. supported by the interior surface of
the cup-shaped casing 54 immediately under the
jecting therebelow only sufficiently to insure that
bellows GI.
upon the reversal of direction of movement the
frictional resistance against the supporting sur
One end of bell crank lever ‘ll is
connected to the bottom plate 66 of the bellows
face will be su?icient to effect the pivotal action
6| through its pivotal connection with a depend
described.
ing arm 13 ?xedly connected to plate 66. Clearly
the vertical displacement of the bellows bottom 55 In theoperation of this embodiment of the
invention cleaning air with foreign material is
plate 66 of the bellows 6| results in the pivotal
drawn into the cleaner through the nozzle Ill.
movement of the lever Tl. Transmission of this
through conduit 5. and into the whirl chamber l2
movement to the ratchet gear 58 is by means of
where by centrifugal action substantially all the
a spring-pressed pin or detent ‘it which is carried
by the lever ‘H at a distance from its pivotal axis 60 foreign material is removed from the air and
drops into the dirt container 4 positioned below
at a position as to engage the teeth of the ratchet
the 'whirl chamber. The cleaned air enters the
ring 58 which teeth are so contoured as to engage
fan chamber 13 through the depending inlet l5
pin ‘hi in the pivotal movement of lever ‘H in one
,_ and is exhausted from the fan chamber by the
direction only, that direction being counter clock
wise as viewed in Figure 5, and to cam the pin 6° fans 25 and 2'! into the ?nal ?lter chamber 3|.
outwardly without engagement in the pivotal
movement of the lever in the opposite direction.
From the latter chamber the air passes through
the ?lter 32 into the surrounding discharge
chamber 3'! from which it escapes into the am
The relationship is such that as the lever ‘H is
bient atmosphere via the apertures 33 in motor
moved in a counter-clockwise direction as viewed
in Figure 5, which occurs upon the collapse of 70 casing 29 and exhaust port 39 in motor hood 6.
As stated, practically all of the foreign material
the bellows under a reduced pressure, the ratchet
is removed in the whirl chamber l2, but a very
gear '58 is rotated together with the nozzle 46.
small percentage of fine dust does escape there
Upon the expansion of the bellows, which as
from and is collected upon the ?nal ?lter 32.
stated occurs upon an increase in the internal
pressure therein as above explained, the down
75 This collected material is removed by the ?lter
2,409,008
cleaning nozzle 46 which is actuated, as described,
by the reciprocation of the air bellows 6| which
effects the step-by-step rotation of the ratchet
ring 58 rigidly connected to the nozzle. At all
times during cleaning operation air is drawn
through the ?lter-cleaning nozzle 46 and the
contacted surface of the ?lter 32, the direction
of air movement through the ?lter surface into
8
of the ?nal ?lter chamber 3|. The armature 82
of each solenoid extends tangentially of- the
ratchet gear 58 being slidably mounted within
the solenoid and supported by spaced bearing
seats 83 also secured to the underside of the
closure plate 34. A coil spring 84 is interposed
between the headed end of each armature ele
ment 82 and the bearing seat 83 and at all times
the nozzle 46 being in the opposite direction to
exerts a force upon the armature 82 which tends
the normal direction of the flow therethrough. 10 tomove it outwardly from its stator.
The air leaves the nozzle‘46 and passes through
Each solenoid armature 82 carries a pivoted
conduits 41 and 52 to join
of the cleaner at the inlet
enters the whirl chamber.
ment of the ?lter-cleaning
the main air stream
chamber 24 where it
Step-by-step move
nozzle 46 is effected, 15
as previously described, by the ?uctuations in
the air pressure at the inlet chamber 24 result
detent 85 which is urged by a leaf spring 81, also
carried by armature 82, into contact with the
adjacent teeth of the ratchet gear 58. The teeth
of ratchet gear 58 are so shaped and the rela
tionship and position of the detent 8G is such
that upon the inward movement of the arma
tures 82 at the solenoid the gear 58 is rotated
whereas upon the outward movement of the ar
upon the reversal of movement of the nozzle. 20 matures under the actuation of the coil spring
Each time the nozzle direction of movement is
84 the detent slides past the gear teeth without
reversed the rocker plate lifts the nozzle, breaks
causing‘ movement of the gear.
the nozzle seal, whereupon the air pressure in
Reference to Figure 12, comprising a diagram
the nozzle and bellows increases and the bel
matic showing of the electrical circuit of the
lows drops to the position shown in Figure 1. 25 cleaner, illustrates that the solenoids 8| are con
Upon the seal being reestablished immediately
nected across the incoming power leads 4| and
following the reversal of direction of movement,
are controlled by a single switch 83. This switch
the bellows is contracted, the ratchet ring is ad
is bob-weight actuated and is clearly illustrat
vanced a single step, and the nozzle is moved
ed in Figures 3, l0, and 11 and is seen to com
to a new position. The ?nal ?lter 32 is regu
prise the usual mercury switch mounted upon a
larly cleaned by nozzle 46 and the back pressure
vertical spring element 9| together with a bob
in the cleaner never increases beyond a reason
weight 92. Spring 9| is mounted for ?exing in
able limit as a result of the accumulation of for
a base 93 and the entire unit is housed within a
eign material.
housing 94 positioned exteriorly of whirl cham
Turning now to the second embodiment of the
ber l2 and within the main casing I. The con
invention illustrated in Figures 8 to 12, inclusive,
struction is such that as the machine is moved
it is seen that the cleaner generally is very sim
from place to place in the cleaning operation,
ilar to that described in connection with the ?rst
the bob-weight 92 will accomplish the tilting of
embodiment. Accordingly, similar reference
the mercury switch 89 in the usual and well
characters are applied to similar parts and only
known manner thereby establishing electrical
those features of the cleaner will be described
circuit through the solenoids. Each time the
which differ from the ?rst embodiment in a ma
electrical circuit is established each solenoid is
terial respect. The principal difference between
energized and its armature 82 is drawn into and
the second embodiment and the ?rst lies in the
toward
the stator thereupon moving the ratchet
actuating means for the ?lter-cleaning nozzle 49,
gear 58 in a clockwise direction as viewed in Fig
the air-operated motor of the ?rst embodiment
ure 9. This gear being ?xedly connected to the ?l
being replaced by electrical solenoids which are
ter-cleaning
nozzle 46 directly results in the step
controlled by a bob-weight-actuated switch.
by-step actuation of that element relative to the
In this embodiment the main nozzle, dusting
?nal ?lter 32. The operation of this embodiment
tool hose, inlet, whirl chamber, suction-creating 50 of the invention in its general outline is similar
fan unit, and ?nal ?lter unit together with the
to that ?rst described, the di?erence lying in the
driving motor and the exhaust passageways can
actuation of the ?lter-cleaning nozzle which is
be considered to be identical for all practical pur
by
means of the electrical solenoids controlled
poses with the ?rst described embodiment of the
by
the
bob-weight-actuated switch as previously
invention. The cup-shaped casing 54 of the ?rst
1
55 described.
embodiment which housed the air-operated m0
I claim:
tor has been eliminated and the closure plate 34
1. A suction cleaner having an inlet port for
comprises the only closure for the top of the ?l
dirt-laden air, a main cleaning nozzle connected
ter chamber 3| and extends entirely across to
thereto and adapted to vary the air ?ow through
the motor casing 29 to which it is ?xedly con
nected. The ?lter-cleaning nozzle 46 is again 60 and the air pressures in the cleaner by its con
tact with a surface being cleaned, a preliminary
rotatably mounted upon the conduit seat 47
separator connected to said inlet port, suction
which in turn is carried by the lower bearing 5|
creating means connected to said preliminary
on the lower conduit 52. The upper bearing 56
separator
to draw air therethrough, a ?nal dirt
of member 47 is located within the ratchet ring
or gear 58 carried directly ‘by the top surface of 65 separator connected to said suction-creating
means to receive air exhausted therefrom, a driv
the conduit seat 41', the coil spring 59 acting be~
ing
motor for said suction-creating means, mov
tween the bearing 50 and a shoulder upon the
able dirt-removing means to remove foreign
sleeve 49 to force conduit 47 against bearing 5|.
The actuation of the ratchet gear 58 in this 70 material from said ?nal separator, air-conduct
ing means to connect said dirt-removing means
embodiment of the invention for the purpose of
to
said preliminary separator, a pressure-varia
actuating the ?lter-cleaning nozzle 46 is ac
tion-actuated air motor to drive said dirt-re
complished by the following mechanism. A pair
moving means, and air-conducting means to con~
of electrical solenoids 8| have their stators ?x
nect said air motor to a point of air pressure
edly carried on the underside of the top wall 34 75 variation in said cleaner.
~
ing from the breaking of the covering seal of the
main cleaning nozzle I 0 by the rocker plate 16
2,409,008
9
2,. A suction cleaner having an inlet port for
dirt-laden air, a main cleaning nozzle connected
thereto and adapted to vary the air flow through
therefrom, a driving motor for said suction
crea-ting means, movable dirt-removing means
to remove foreign material from said ?nal sepa
and the air pressures in the clean-er by its con
tact with a surface being cleaned, a preliminary
separator connected to said inlet portion, suction
creating means connected to said preliminary
separator to draw air iiierethrough, a ?nal dirt
separator connected to said suction-creating
means to receive air exhausted therefrom, a driv
ing motorfor said suction-creating means, mov
able dirt-removing means to remove foreign ma
10
to said preliminary separator to draw air there
through, a ?nal dirt separator connected to said
suction-creating means to receive air exhausted
rator, air-conducting means to connect said dirt
removing means to said preliminary separator,
means actuated by variations in air pressure in
10 said cleaner to mOVe said dirt-removing means,
terial from said ?nal separator, air-conducting
means to connect said dirt-removing means to
and means to cause variations in said air pres
sure comprising means to lift said nozzle upon re
versal in the direction of nozzle travel.
'7. In a suction cleaner, a surface cleaning
nozzle, suction-creating means to draw cleaning
said preliminary separator, a pressure-responsive 15 air through said nozzle, a dirt separator to re
element connected to said dirt-removing means
to exert a moving force thereon, and air-conduct
move dirt from air passing through said nozzle,
ing means connecting said element to a point of
air pressure variation in said cleaner.
3. A suction cleaner having an inlet port for
separator, and step-by-step means to effect the
dirt-laden all‘, a preliminary separator connected
dirt-removing means to remove dirt from said
step-by-step movement of said dirt-removing
means under predetermined air pressure condi
tions in
said
surface-cleaning nozzle,
and
to said inletport, suction-creating means con
manually operable means including said nozzle
nected to said preliminary separator to draw air
to produce said conditions in said surface-clean
therethrough, a ?nal dirt separator connected to
ing nozzle.
7
said suction-creating means to receive air ex
8. In a suction cleaner, a body movable along
hausted therefrom, a driving motor for said suc
a supporting surface, a part movably supported
tion-creating means, movable dirt-removing
on said body and movable by the operator as an
means to remove foreign material from said ?nal
incident to the physical displacement of said body
separator, air-conducting means to connect said
relative to the supporting surface, a dirt separa
30
dirt-removing means to said preliminary separa
tor, means to move dirt-laden air through said
tor, an air-pressure-variation-actuated air motor
separator, dirt-removing means to remove dirt
directly connected to said dirt-removing means
from said separator, means to effect intermittent
to drive same and interiorly connected to a point
relative movement between said dirt-removing
of air ?ow in the cleaner, and means to provide
means and said separator to perform the clean
?uctuation in the air pressure in said cleaner 35 ing operation, and means controlling the actua
to drive said air motor.
tion of said last-mentioned means and including
4. A suction cleaner having an inlet port for
means positioned by the movement of said mov
dirt-laden air, a main cleaning nozzle connected
able part upon said operator movement of said
thereto, a preliminary separator connected to
body along the supporting surface.
said inlet port, suction-creating means connected 40
9. In a suction cleaner, a movable surface-con
to said preliminary separator to draw air there
tacting nozzle, a dirt separator, means to move
through, a ?nal dirt separator connected to said
dirt-laden air through said separator, dirt-re
suction-creating means to receive air exhausted
moving means to remove dirt from said separa
therefrom, a driving motor for said suction
tor, air-pressure-variation-operated means to
creating means, movable dirt-removing means to
effect relative movement between said dirt-re
remove foreign material from said ?nal sepa
moving means and said separator to perform the
rator, air-conducting means to connect said dirt
cleaning operation, and nozzle-lifting means po
removing means to said preliminary separator,
sitioned by the operator movement of said mova
an air motor directly connected to said dirt
ble nozzle to lift said nozzle from a surface cover
removing means to actuate same, air-conducting
ing to vary the air pressure at said air-pressure
means connecting said air motor to said inlet,
lvariation-operated means.
and means in said nozzle to vary the pressure at
10. In a suction cleaner, a main casing, a dirt
said inlet with each reversal in the direction of
separator therein, means to move dirt-laden air
travel of said nozzle.
through said separator, dirt-removing means to
5. A suction cleaner having an inlet port for m Um remove dirt from said separator, means to effect
dirt-laden air, a main cleaning nozzle connected
relative movement between said dirt-removing
thereto, a preliminary separator connected to
said inlet port, suction-creating means connect
ed to said preliminary separator to draw air
means and said separator to perform the cleaning
operation, and means controlling the actuation
of said last-mentioned means and including
therethrough, a ?nal dirt separator connected cs 9 means positioned by the operator movement of
to said suction-creating means to receive air eX
said main casing.
hausted therefrom, a driving motor for said suc-,
11. In a suction‘ cleaner, a body movable along
tion-creating means, movable dirt-removing
a supporting surface, a part movably supported
means to remove foreign material from said ?nal
separator, air-conducting means to connect said
dirt-removing means to said preliminary separa
tor, step-by-step means actuated by variations
in air pressure in said cleaner to move said
dirt-removing means, and means including said
nozzle to effect variations in the air pressure of
said cleaner.
6. A suction cleaner having an inlet port for
dirt-laden air, a main cleaning nozzle connected
thereto, a preliminary separator connected to
said inlet port, suction-creating means connected
on said body and movable by the operator as an
incident to the physical displacement of said body
relative to the supporting surface, a, dirt separa
tor, suction-creating means to move dirt-laden
air through said separator, a nozzle connected to
said suction-creating means to remove dirt from
said separator, a ratchet gear connected to said
nozzle and movable therewith, a reciprocatory
motor to actuate said gear with a step-by-step
movement, and means controlled by the move
ment of said movable part upon said operator
11
2,409,008
-
12
movement of said body along the supporting sur
said nozzle, and a, pivoted rocker element in
face to energize said motor.
said nozzle in contact with a surface undergoing
12. In a suction cleaner, a movable cleaning
cleaning adapted to lift said nozzle upon a re
nozzle, a dirt collector, suction-creating means to
versal in the direction of movement thereof to
move dirt-laden air through said nozzle and col 5 admit air into said nozzle to decrease said suc
lector, a second nozzle connected to said suction
tion and to vary the pressure in said bellows.
creating means to remove dirt from said collector,
14. In a suction cleaner, a movable cleaning
a ratchet gear connected to said second nozzle
, nozzle, a dirt collector, suction-creating means to
and movable therewith, an expansible-contracti
move dirt-laden air through said nozzle and col
ble air bellows, means connecting said bellows 10 lector, a second nozzle connected to said suction
to said ratchet to effect the movement thereof
creating means to remove dirt from said collector,
upon the movement of said bellows, air-conduct
a ratchet connected to said second nozzle and
ing means connecting said bellows to a point in
movable therewith, an electric solenoid to actuate
the air stream moved by said suction-creating
said ratchet, and means adjustable by an op
means, and means in said cleaning nozzle to
erator in the movement of said cleaner to control
effect variations in pressure in said air stream
the ?ow of electric current to said solenoid,
to energize said bellows.
15. In a suction cleaner, a body, a movable
13. In a suction cleaner, a movable cleaning
cleaning nozzle, a dirt collector, suction-creating
nozzle, a dirt collector, suction-creating means
means to move dirt-laden air through said nozzle
to move dirt-laden air through said nozzle and 20 and collector, a second nozzle connected to said
collector, a second nozzle connected to said suc
suction-creating means to remove dirt from said
tion-creating means to remove dirt from said col
collector, a ratchet connected to said second noz
lector, a ratchet connected to said second nozzle
zle and movable therewith, an electric solenoid
and movable therewith, an expansible-contracti
to actuate said ratchet with a step-by-step move
ble air bellows, means connecting said bellows to 25 ment, and a bob weight actuated switch carried
said ratchet to e?ect the movement thereof upon
by said body and movable to closed position to
the movement of said bellows, air-conducting
energize said solenoid upon the movement of said
means connecting said bellows to a point of suc
tion between said suction-creating means and
body.
-
LOUIS K. ACHESON.
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