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Патент USA US2410302

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0a. 29, 1946.'
c. o. PENN
2,410,302 '
Filed Nov. 11; 1943
3 Sheets-Sheet 1
Carl 0. Penn
' Get. 29, 1946.
c, o, PENN
Filed Nov. 11, 1945
s Sheets-Sheet 2
C’arl 0. Penn
Oct. 29, 1946.
c_ o, PE‘NN
Filed Nov‘. 11, 1943
5 Sheets-Shéet 3
Carl 0. Penn
,/77'70A’/VEY. '
Patented Oct. 29, 1943
Carl 0. Penn,‘ Canton, Ohio, assignor to The
Hoover Company, North Canton, Ohio, a cor
poration of Ohio
Application November 11, 1943, Serial ‘No. 509,875
9 Claims. (01. 183-57)
The present invention relates to suction clean
Figure 4 is a partial section upon the line 4-4
ers in general and more particularly to a new and
of Figure 1;
novel suction cleaner in which a ?xed ?lter with
in the machine must be cleaned before the ma
chine can be opened to empty the collected for
Figure 5 is a partial section upon the line 5-5
of Figure 1 and shows the means which retain
the actuating handle in its operative and inopera
tive positions;
eign matter. More speci?cally the invention com
prises a suction cleaner with a permanently em
Figure 6 is an enlarged view of the program
release mechanism illustrated in Figure l, the
parts'being shown positioned so as to permit the
bodied ?lter and‘a removable dirt container, ac
cess to the dirt container being controlled by pro
gram release means.
It is an object .of the present invention to pro
vide a newand improved suction cleaner. It is
a further object of the invention to provide a new
10 removal of the casing cover;
ure 6;
, In the common canister suction cleaner foreign
and improved suctionhcleaner embodying ‘program
release meansfor. the dirt-retaining means. A
material is collected within a removable dust bag.
When this bag has become ?lled with foreign
still further object of the invention is to. provide
material to an extent such that the back pres
sure opposing the flow of cleaning air through
the machine is excessive the machine is opened,
a suction cleaner incorporating-an initial dirt sep
arator, suction-creating means, a ?nal dirt sepa
rator, means to remove the collected foreign ma
terial from the ?nal dirt separator and to trans
port it to the initial dirt separator, and program
controlled release means which require that the
?nal dirt separator be cleaned before foreign ma
terial can be removed from the initial dirt separa
tor. Still another object of the invention is to 25
provide a suction cleaner in which a predeter
the bag removed and cleaned as by shaking. The
bag-cleaning operation is objectionable in that
‘foreign material enters the air and is noticeable
to the user. In an improved type of suction
cleaner’ a removable receptacle within which for
eign‘material collects is provided and, being made
of'metal or similar material from which foreign
material readily separates, permits of cleaning in
mined program must be followed, including the
cleaning of a ?nal ?lter, before the cleaner can
be opened and the dirt emptied therefrom. Still
another object of the invention is to provide a 30
new and novel cover release ‘mechanism for a
suction cleanen A still further object of the in
vention is to provide a suction cleaner in which
a ?lter-cleaning nozzle must .be reciprocated a
Figure 7 is'a section upon the line 'l-l of Fig
a much less undesirable operation. If the ma
chine of this latter type embodies a ?lter which
is permanent within the cleaner, in the sense that
it is not removed with the removal of the foreign
material, then the ?lter must be cleaned at inter
vals'to prevent the building up of an undesirable
back pressure.
- ‘In a suction cleaner constructed in accordance
predetermined number of times relative to the
with the preferred embodiment of the present
?lter to remove the collected foreign material
invention, the ?xed ?nal ?lter within the machine
therefrom before the machine can be opened and
is provided with cleaning means which remove
the collected foreign material removed. These
the collected foreign material from it and trans
and more speci?c objects will appear upon read
that material to 'a readily emptied remov
ing the following speci?cation and’ claims and
able; dirt receptacle. To insure that the ?nal
upon considering in connection therewith the at 40 ?lterwill be cleaned and that the receptacle will
tached drawings to which they relate.
not be emptied by the operator without periodi
Referring now to the drawings in which a pre
cally cleaning the ?lter, there is provided a pro
ferred embodiment of the invention is illustrated
gram release mechanism which places the opera
and in which the same reference character refers 45 tor under the necessity of cleaning the?nal ?lter
to the same parts of the various views:
‘before he can remove the receptacle to empty the
- Figure 1 is
a vertical longitudinal section
through a cleaner embodying the present inven
Referring now particularly to the drawings a
horizontal canister type machine is illustrated in
Figure 2 is a partial end view of the cleaner 50 Figure 1 in ‘ vertical longitudinal section. The
illustrated in Figure l with a part of the cleaner
cleaner is seen to comprise an elongated casing
cover broken away;
- Figure 3 is a section through the air-control
ling valve means, being taken upon the line 3-3
of Figure
I which may be cylindrical and‘ which is slidably
supported ,by longitudinally, extending runners 2
in‘ a common‘ and well known manner. One end
66 of cylindrical casing ‘I is closed by a ?xed cover
wall I I by the air seal mounting 33. The nozzle
is adapted to slide over and contact the entire
length of the ?lter 21 being movable between
resilient bumpers 34 carried by the plates I I and
Conduit 32, forwardly of the plate II, is closed
by a ?xed closure plug 36 and is provided rear
plate 3 which is provided with an exhaust port
3 of a type adapted to receive and seat the cleaner
end of the usual and well known dusting tools.
The opposite end of the cleaner is closed by a
removable cover plate 6 embodying an intake
port ‘I also of a type adapted to receive and seat
dusting tools. Cover 6 is sealed to casing I in
wardly of the plug with a side valve port 31. To
air-tight relationship by an intermediate seal ele
ment 5; The bottom‘ of the removable cover 6
is removably held in place by a spring plate sup
actuate the conduit 32 and the ?lter-cleaning
force it toward the casing end ring 9 ?xed on the
vided. an exterior operating handle 38 and a tube
lit nozzle 31, and also to close'the valve port 31 when
port 8 which supports the cover and tends to ' ' it is not desired to use the nozzle, there is pro
39'. l The latter extends through the cover 6 at a
casing I. The upper end of cover 6 is removably
latched to the casing I by means
slot portv 41 formed therein to accommodate it,
will be
e is slidably. carried in a depending guide 42 formed
fully described and which include program release
means the operation of which requires that the
integrally in the end ring 9 of the casing I and
operator clean the cleaner ?lter before the cover,
seats rotatably on the end portion of conduit 32.
can be removed.
"" “ ‘
“Tube '39 at“ its inner end is formed with a side
port 43 adjacent the port 31 in the conduit 32.
In the normal position of the handle during
" ’
Within casing I are positioned a front trans
verse plate I I and a rear transverse plate I2, the
cleaner operation, as shown invfull lines in Fig
latter being provided with a plurality of ports I3
around'itsper'iphery and'imm'ediatelyins'ide the
ures l and 3,> the ports are 180 degrees out of
alignment When the handle is rotated through
130‘ degrees port 43 moves into alignment with
casing I, Plates II and I2 support the'suction
creating, unit'o'f'the cleaner comprising a motor
IAfarid‘ "a multiple‘ ‘Ian.
I6. '“ The casings of
fan iinit'l?and‘ motor I4 are‘ ?xedly. secured to
the plates II and I2 and the mbtorushaft I'I
extends‘ completely through the casing of fan
u'ri‘itl?j where it carries a plurality of 'fans I8,
through the ‘front plate I,I',‘and‘_into the,‘ chamber
I9‘ where it, carries the rotar'y'separator 2L‘ ' Ito
and the interior of tube. 32,, and so the
nozzle 3i, is connected to the separating cham
ber‘ I9‘. To permit of relative rotation of tube 39
relative to, conduit 32. and at the same time to
prevent longitudinal vseparation thereof, the tube
30 39 and the conduit 32 are provided with mutually
engaging circumferential grooves, illustrated and
indicated at 44, adjacent the, plug 36.
In the‘ normal operation of the machine‘ it is
desirable that the handle 38 and ‘the ?lter
t'a‘ry ‘separator 2 I" is of a well known type‘ which,
when rotating at high speeds permits air to pass
through it'whil‘e' rejecting and throwing radially
oi'it‘ "avidly foreignma'terial of appreciable: mass
cleaning nozzle 3I beheld in a de?nite position.
A bracket 43 on the inside of the casing I is po
which attempts to enter,‘ A plurality of minor
airlmov'ing ~blades ‘22 are formed upon; separator
sition'e'd forwardly‘ of a stop lug 41 upon the tube
froirip'assing'ffrom' the chamber I9 inwardly to
39in all angular positions of the tube except the
nozzle-operating position illustrated in dotted
2;’l'gadflacent the plate I I whichyserve' to prevent~ air
ward the" motor shaft without ‘passing. through
lines "in 'Figi'ires‘l and 2, Unless the‘ handle is
the apertures of j the "separator 2‘I . The suction
creating fans I8 cause air 'to' pass through the
turned‘; to the‘dotte'd. line position‘the bracket
prevents forward movement of the tube and noz
zle'throu'gh obstructing the lug 4,1. Itis also de
sirable that are handlelbe held either in its nor
mal‘ angular position or that'itbe held in its
ridz'z'le'éoperating angular, position. To accom
there is provided within the conduit 32
aL'springK-pressed. detent 1H3v which'extends out
sejp 'rator 2 I ,' through theeye 23 ,ofzthe fanhclham
through‘th'e manna, and to beaex
naustea‘ through'x'the exhaust ports 24." The space ;
arouh'd‘the motor III and fan unit I6, into which
the ‘air is'exhausted is ‘indicated by the, reference
character 26 ,‘a'n'dis called the ?nal ?lter chamber,
deriving“it's‘jnlarnefrom the factthat it is enclosed
wardlyfthrough the conduit in a suitable sealed
relationship; ‘The extreme ‘end of. thetube 39
brief; ‘al‘i’r berriléabléj?lter 2,1 extending between
plates II and I2‘; ' The space outside of the, ?lter
27'], and'withi'n the casing‘ I, isindicated by the
reference'eharacter' 28' and may be referred toras
the discharge chamber,’ being corinectedthrough
tiieriért'fls in therear wall 12 to the discharge
part}. "Foreign material entering the‘cleaner
will beneany all removedlwithin ‘the initial sepae
rator'ehamber‘IS by the action of the ‘centrifugal
separator ZI' and'willcollect within the remova
cream ‘ContainerIZIJ‘, Asmallpart, however, of
théfoi‘e‘isn material, 'izariiwlarlv. materialnivery
slight v‘ma‘ssgmay' pass throughthe separator and
into ‘the’f'a'n‘
torbie' exhausted into the ?nal
dirt" separator-V2 Iit to» be collected'iupon the’ interior
surface of z'the?lterj‘l. Theair less the foreign
surrounding: ,on'duit- 32 is formed with two spaced
detent-vrjéc" rig seats ‘or pockets 49 into which
detént "48 ‘,i , dapteditojslidebyslightly
‘ compress-v -
ing ‘its ‘springandfrom' which it can be displacea
blebya 'slightirotational force upon the handle.
Actually, of ‘course, ‘the seats49 upon thewtube 39
riit'ate' relative, to theidetent for it is theltube 39
earrying'the seats which is rotatable.
Inv the?norm'al; operation of the cleaner air
passesirorrr the ?nal ?lter ‘chamber 26' outwardly
through the’ ?lter 2"Iinto the discharge chamber
28} the lforreign material collecting ‘upon. the inte
rior?suriaceuof-the ?lter. Inv the ?lter-cleaning
operationjthe nozzle 3] is reciprocated back and
charge "chamber and escapes through the ‘dis
forth over‘vthesur’face. of ?lter 21 a plurality of
times‘: in ‘order that the he ?lter-cleaning air.enter
charge‘port _4: As the interior surfacekof the’, ?lter
through the ?lter 21 into the nozzle 3| will have
metal was (thmugh. the . ?lter, of. the dis
211'ignot'readilr,asqessible t0 theoperatqr means
are "provided to clean “ it comprising a ?lter:
cleaning'noz‘zle 3 I , ring likein form and provided
with ‘a; 's‘ur’face'écontacting" mouth.‘ Nozzle; 3| ' is
int'eif'i'orly' eqrinect'éd by "a‘rig'id conduit "32 to: the
interior of the initialvdirt' separator, chamber I9,
the ‘eats a ‘bars; were‘ ihmfifruédTinv ‘the
ingufrom‘ the discharge- chamber 28 and passing
sui'jicdient opportunity to remove, the collected
materiall' The number of times which the noz
zle" must be reciprocated can be determined
empiricallybutis inthe neighborhood of?three
ember. 'According : to the: present invention ,be
w fore the dirt container 20 can be remQVeed-.'the
‘?lter 21 is to be- cleaned and accordingly the
cover plate 6,7which must be removed toigain
access to removable container v2f], is normally
the spacing of the pins 61' will determine the num-‘
ber of reciprocations of the nozzle 3| which must
‘ When
to release
the cover.
is being’ used
to clean the ?lter 21 it is desirable that all‘of the
mechanism. This program release mechanism
air passing through the suction-creating means
is directly connected to the actuating mechanism
of the cleaner ‘perform the‘ useful function of
for the ?lter-cleaning nozzle and the ?lter-clean
cleaning the ?lter. If the intake port 1 remains
ing nozzle must be reciprocated the desired num
open certain air will enter therethrough and this
ber of times before the cover can be removed.
air, which of course is also handled by the suc
This mechanism will now be described.
tion-creating means of the cleaner, will’reduce to
I Removable cover 6 carries an inwardly project
that extent the air which is drawn from the
ing arm 5| the slotted end of which extendsin
nozzle 3| in through the conduit 32. Accordingly
sealed relationship through an aperture formed in
it is desirable that the intake port 1 be closed dur
a ‘housing 52 carried below the top of main casing 15 ing the ?lter-cleaning operation and this is ac
1. During normal cleaner operation arm 5|,
complished by providing a valve plate 8| pivotally
locked to the casing l and can only be removed
by the operator actuating a program release
and so the cover 6 ?xed thereto, is held against
mounted upon a pin 82 on the interior of the ,
outward displacement by a hooked latch 53 pivot
cover 6 and movable between port-closing and
ally mounted upon a bracket 54 within the hous
port-opening positions. A coil spring 83 be
ing 52. Latch 53 is held in both latching and 20 tween the head of pivot pin 82 and the valve 8!
non-latching positions by a spring 56 which con
urges the valve toward the cover 6 so as to seal
nects to it and to the bracket 54, the connections
being upon opposite sides of the pivotal mounting
of the latch and the ‘Spring moving over center
with the mouth of port 1.
A second coil spring,
indicated at 84, also encircles the pivotal axis
82 and exerts a pivoting force upon the valve
with respect thereto as the latch moves from one 25 8| to move it into port-closing position.
to the other position.
The latch carries a pivoted
“trip arm 5l.which is normally spring-pressed
toward a ?xed stop pin 58 on the bracket 54 but
which is adapted to be pivoted into contact with
a stop pin 59 carried by the latch 53 upon its
opposite side.
A ratchet wheel 5! is rotatably mounted upon
a shaft 62 carried by the bracket 54. An adjacent
rocker arm 53 on shaft 62 carries a spring-pressed
A cross head 86 carries a pin 81 which engages
a slotted upper end of the valve plate 8| being
itself slidablyi mounted on the inner surface of
cover 6. Cross head 86 extends is sealed rela
tionship through its seat in cover 6 into abutting
contact with the handle 38, as illustrated in Fig
ure 2, when the handle is in inoperative or clean
er-operating position. When the handle is moved
to its own operating or nozzle-actuating position,
pawl 64 adapted to engage the teeth of ratchet 35 illustrated in dotted lines in the same ?gure, ‘the
wheel BI and to rotate that element in a counter
cross head 86 is released and, under the actuation
clockwise direction, as viewed in Figures 1 and
‘of the coil spring 84, the valve 8| moves into port
6. Rotation of the ratchet wheel in clockwise
sealing position and the cross head moves trans
direction as viewed in those ?gures is prevented
versely outwardly. It is adapted to be contacted
by a second spring~pressed pawl 56 pivoted on 40 and moved to its former position by the handle
the bracket 54. The ratchet wheel 6| carries
when the latter is again moved to its full line po
several axially projecting pins 61 which are
sition illustrated in Figure 2.
adapted to contact the lower end of the trip arm
' The operation of the ?lter-cleaning mechanism
5'! of the latch 53 with the latch in its holding
and the removal of the dirt contained therein will
position. Rotation of the ratchet wheel 6| in 45 now be explained. The machine having been used
a counterclockwise direction, as viewed in Figure
for a considerable period of time, and the oper
1, effects the contact of a pin 61 with the trip
> ator being of the opinion that the dirt container
arm 51 and the pivotal movement of that arm
20 should be emptied, he pivots the handle“
from the bracket-carried stop 58 into contact with
from the full line position to the dotted line po
the latch-carried stop 59. Further movement of 50 sition illustrated in Figures 1 and ,2. Thereupon
the pin results in the pivotal movement of the
plate valve 8! moves into position to close the
latch until the spring 56 moves over center with
intake port 1 and all of the air which moves
respect to the latch pivotal axis at which time
through under the actuation of the suction-cre
the latch snaps into its open position illustrated
ating means is circulated through the ?lter-clean
in Figure 6.
ing nozzle 3| . The rotation of the actuating han
Rotation of the ratchet wheel 6| to effect the
dle 38 through 180 degrees moves the stop lug 41
movement of the latch is accomplished by a
into position so that it can move past the bracket
headed pin ll which slidingly seats in seated rela
46 on the casing I. This permits the handle to
tionship in the side wall of the housing 52 in
be pulled inwardly and outwardly relative to the
position to be contacted by a shoulder 12 on
front of the machine and, accordingly, the nozzle '
conduit 39 near its forward end. As handle 38 60 3| to move longitudinally of the casing and over
is drawn outwardly, and near the- end of the
the surface of the ?lter 21. The handle is re
movement of the nozzle 3| toward the front of
tained in its upper or nozzle-operating position,
the machine, the shoulder 12 contacts the pin ‘H
as it was retained in its lower initial'position,
and forces it inwardly in the housing 52. The
by the cooperation of the spring-pressed detent
forward end of the headed pin ll contacts‘the 65 48 carried by the conduit 32 with a detent seat
outer end of the rocker arm 63 with each inward
carried by the tube 39. The operator reciprocates
movement, resulting from each forward stroke of
the handle and the nozzle rearwardly and for
the nozzle 3|. The rocker arm 63, through the
wardly several times and with each movement
engagement of the pawl 64 with the ratchet wheel,
tube-carried shoulder 12 abuts and forces in
rotates that wheel in a counterclockwise direction.
wardly the slide pin ‘ll resulting in the partial
This rotation continues as the nozzle is recipro
rotation of the ratchet wheel 6|. The start of
cated by the handle 3| until the following pin
this operation found the latch 53 in its cover
61 engages the trip arm 51 to perform'its latch
retaining position, illustrated in Figure 1. The
actuating function described above. Obviously 75 subsequent rotation of the ratchet wheel‘ upon
means, valve means to- control the flow of air
through said inlet port, program means connect
ing- said nozzle and said latch to release the latter
upon a predetermined movement of the former,
Cl and manually operable means connected to said
nozzle and mounted for rotation to actuate- said
otal movement of the latch 53 until it springs-to
the reciprocation of, the nozzle. causes, the ratchet
wheel tov be rotated; and this rotation brings, into
contact with the, trip arm- 51 on the latchv 53;- the
next pin 61 on the ratchet wheel. rIfhe engage
ment of the pin and the trip arm effects the piv
the open position, illustrated in Figure 6, under
the, actuation of its over center spring 56., The
valvemeans and for displacement to actuate said
arm 5| on the cover 6 is then free to move out
5. In a suction cleaner, a main casing includ
be removed and emptied in an obviousmanner.
The dirt container being; emptied it is replaced
initial dirt separator, suction-creating means in
within the machine and the cover 6;, again posi
tioned. The operator then exerts a downward
force upon the latch-operating plunger 55' toforce
the latch downwardly from the position illus
and through said initial dirt separator, a- ?nal
dirt separator including a ?lter to receive. air
from saidv suction-creating means, a ?lter-clean
trated in Figure 6 to thatillustrated in Figure, 1.
thevFigure 6 position, it is to be noted, the trip lever 51 has moved to, a position rearwardly of
.thepin 61 which e?ected the trippingaction upon
means at said initial separator and mounted for
movement relative to said ?lter, valve means con
wardly- and the operator can pivot the cover 6 10 ing a removable cover and inlet and exhaust ports,
a dirt container inside said casing displaceable
outwardly and slide the bottom thereof from its
from said‘ casing with said cover removed, an
spring; support 8'. The dirtcontainer Z-Qcan then
said casing to draw air through said inlet port
ing nozzle connected to said suctionecreating
trolling the ?oW of air through said inlet port
and through said nozzle, latch means securing
said cover to said casing, a manually operable
the latch 53 moving to its upperposition. When
handle connected to said nozzle and to said valve
the latch 53 is forced downwardly by the plunger
55 the trip lever is in position to be, engaged by 25 means, and program means to release said latch
upon a predetermined movement of said nozzle
the, next pin 61. The operator, to return the ma
by said handle.
chine to its normal:operatingcondition, need only
6. In a suction cleaner, an elongated main cas
rotate, the actuating handle 38: from its dotted
ing including a removable portion, a ?lter insaid
line position to its full line, position, the handle
being; as close to the casing cover as possible. 30 casing, securing means normally holding said
portion in place, program release means control
Therenpon; the port-closing valve. 8| moves to
ling said securing means, a ?lter-cleaning ele
open- position and the‘ machine is again ready for
ment movable with respect to said ?lter, and a
handle to actuate simultaneously and with the
a dirt; separator, a dirt" receptacle, a casing enw
said ?lter-cleaning element and mounted for
translation parallel to the major aXis of said cas
ing, characterized in that said handle must be
1'. Ina suction cleaner,’suction-creating: means, 35 same movement said program release means and
closing; said parts and including; a removable
cover; the removal_ of which gives access to said
dirt receptacle, latching means retaining, said
actuated a plurality of times to actuate said pro
cover in- place on said; casing, a program release 40 gram release means to move said release means
mechanism positioning said, latching. means,
to their releasing position.
means to actuate said mechanism to positionsaid
latching means to release said cover including a
manually operable handle, and means to. clean
said- dirt separator concomitantly with the opera= _
removable portion, securing means normally hold
ing said portion in place, an initial dirt separator,
suction-creating means, and a ?nal dirt separator
tion oi-said mechanism and actuated: by said
including a ?lter arranged in the order given
within said casing, a movable nozzle movable on
7. In a suction cleaner, a casing including a
said ?lter, air-conducting means connecting said
nozzle to said initial dirt separator, valve means
a removablev cover, a- ?lter in said casing, a latch
normally securing saidcover; onrsaidcasing, man. 50 controlling the ?ow of air through said nozzle,
program release means controlling said-securing
ually operable means to release said latch, a filter
means, and a single manually operable element
cleaning nozzle in said casing, means.connect
to actuate said nozzle, valve means and pro
ing- said, nozzle to said manually ,- operable means
2. In-asuction cleaner, a,m-ain.casingincluding
to enable , the, operator to, actuate ; said: nozzle, and
program means controlling said latch and-adapted to release same under a, predetermined: schedule
of; operationoi said nozzle.
gram release means.
8. In a suction cleaner, a casing, an initial
dirt separator, suction-creating means and a ?nal
dirt separator in said casing, a nozzle to remove
dirt from said ?nal ?lter, air-conducting means
connecting said nozzle to a point of suction in
tion-creating- meansin-said casing tomove-air (5.0 said initial dirt separator, valve means to con
trol the ?ow of air through said nozzle, and an
through said ?lter, a latch normally-lsecuringosaid
operating handlemounted for translation and
cover to said casing, a,?lter-cleaningelement in
arcuate movement relative to said casing on a
said‘ casing movable relative to saidl?lter, program
single axis and connected to said nozzle and to
means connecting said elementand' said latch
to release the latter by; a predetermined move 0.5 said valve means, characterized in that the ar
cuateposition of said handle- controls said valve
ment-of the former, and manuallyoperablemeans
means, and the translatory movement operates
to actuatesaid element;
said nozzle..
4; In a suction cleaner, a main casing includ
9. In a suctionv cleaner, a casing including. a
ing aremovable cover and inletand' outletcports,
“3;,In a.,s-uctionocleaner, a main-casinginclud
ing a removable cover, a?lter insaid casing-,suc
a ?lter; in said casing,- suctionecreatinglmeanszin 70 removable portion,v an initial dirt separator; suc
tion-creating means and a ?nal‘ dirtseparator. in
said casing to move air through said?lter, alatch
said, casing; a nozzle to removev dirt from said
normally securing said coventasaid casing, a..?l'-:
?nal ?lter, air-conducting means. connectingsaid
ter-cleaning nozzle in, said casing movableorelav
nozzle to apoint of suction in said initial dirt
tive to said- ?lter, valvejmeans-to connectrsaid
?lter-cleaning nozzle to , said-,1 suctionecreat-ing 75 separator, valvemeans to, control the, flow of air
through said nozzle, securing means for said re
movable portion, program release means con
to actuate same, characterized in that the arcuate
position of said handle positions said valve means
and the translatory movement of said handle ac
trolling said securing means, and an operating
handle mounted for translation and arcuate
tuates said _~nozzle and said program release
movement relative to said casing on a single axis 5 means.
and operatively connected to said nozzle, to said
valve means, and to said program release means
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