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Патент USA US2112311

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March 29, 1938.
2,112,311
D. G. SMELLIE‘
SUCTION CLEANER
3 Sheets-Sheetl
Filed May‘ 28, 1930
_
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-Donald 6’. 5277677232.
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March 29, 1938.
D. G. SMELLIE
SUCTION CLEANER
Filed May 28, 1950
2,1 12,311
3 Sheets-Sheet
3
5
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Donald 6? SmeYZZé.
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2,112,311
. Patented Marf29, 1938
UNITED STATES‘ PATENT OFFICE
2,112,311
SUCTION CLEANER
Donald G. Smellie, Canton, Ohio, asslgnor to The
Hoover Company, North Canton, Ohio, a cor
poration of Ohio
Application May 28, 1930, Serial No. 456,388
'
-
16 Claims.
(0]. 15--13)
The present invention relates to suction
cleaners and particularly to improvements in suc
the surface covering; and in which the point of
agitation is coincident with the point of air clean
tion cleaner agitating means.
ing effectiveness.
i
‘
The- advantages of the suction cleaner whic
It is an object of the present invention, there-,
CW effects positive agitation over the suction, cleaner fore, to provide a suction cleaner in which a more
which relies solely upon air to do the cleaning are 'emcient surface covering agitating means is pro
well de?ned. In the straight-air machine as the vided. It is a still further object of the present
machine ~passes over the‘ covering undergoing invention to provide a cleaner in which the agi
cleaning the lips of the nozzle contact said cover
tation of the surface covering occurs at the point
10 ing and the air drawn into said nozzle by action at which the cleaning air is effective. It is a still
of the motor-drivenv fan removes the dirt or
further object of the invention to provide a sue
foreign matter therefrom at the point of contact.
tion cleaner in which positive means are incorpo
rated which insure an open pathway for the
cleaning air into the surface covering. Other and
The cleaning air, however, in the absence ,of posi
tive assistance cannot penetrate into the body‘ of‘
the surface covering and consequently has no op
portunity to remove the dirt which is deeply em
bedded therein but is able to remove only the
loosely embedded particles at or near the top of
said covering. In the machine embodying positive
70 agitation the surface covering is vibrated and
?exed, the foreign particles embedded in the sur
face covering are thereby loosened and the clean
ing air is better able to remove the same. In the
ordinary cleaner embodying positive agitation
to the drawings annexed thereto.
'
Referring now to the drawings:
'
Fig. 1 is a side view of a suction cleaner con
structed in accordance with the present inven
tion with certain parts broken away upon the 20
line I—l of Fig. 3, to show the power transmission
mechanism.'
.
'
. Fig. 2 is a bottom view of the cleaner disclosed
however no means are incorporated which posi
in Fig. 1.
tively provide open pathways for the cleaning
Fig. 3 is a front view of the cleaner disclosed in
Fig. 1 with certain parts broken away.
Fig. 4 is a partial end view of thecleaner shown
air into the body of the covering so that it may
reach to the deeply embedded foreign particles.
The ordinary positive agitation cleaner, al—
30 though a more e?icient cleaner than the straight,
air cleaner, is itself open to the objection that,
while it breaks up the hardened masses of foreign
matter in a surface covering it provides no posi
tive means to insure that the cleaning air will
35 penetrate into the covering to’ a sufficient depth
'
more speci?c objects will/appear upon reading the 15
accompanying speci?cation, reference being had
to remove all of said particles.
Because of the
resistance to air flow through 'the pile of the
surface covering the air in entering the suction
no'zzle will penetrate therein to a minimum depth
10 and itis necessary that means be provided which
direct the air into the covering.
The ordinary positive agitation cleaner is also
open to objection in that the points at which the
agitation of the surface covering takes place are
removed from the points at which the cleaning air
is effective. Theoretically maximum cleaning ef
?ciency is obtained when thepoint of positive
agitation of the surface covering and the point
at which‘ the cleaning air is effective are coinci
10 dent.‘ The present suction cleaner provides,
through a new and novel design, a construction
in Fig. 3.
‘
,
.
v
'
25
-
Fig. 5 is an enlarged cross section upon the line 30
'5-5 of Fig. 3.
-
Fig. 6 is a cross section upon the line 6-6 of
Fig. 5.
Fig. '1 discloses a modi?ed embodiment‘of the
present invention.
.
Fig. 8 is a bottom view of the modi?cation dis-.
closed in Fig. 7.
.
35
-.
Fig. 9 is a detail showing of a ?exible mounting.
Referring now to Figs. 1 and 2 in particular a
suction cleaner constructed in accordance with
the present invention is indicated by the reference
character I. The suction cleaner i comprises the‘
usual motor casing 2, fan casing 3 forming the
fan chamber 4, suction nozzle 5, front vsupport
ing wheels 6, 6 and a rear supporting wheel 1. 45
The motor casing 2 houses a driving motor which
drives the fan 8 positioned within the fan cham
ber 4 upon the motor shaft 9.
The aforedescribed parts comprise those parts
found in the usual suction cleaner.
50
Positioned within the mouth of the nozzle 5
and extending therefrom are front and rear
in which positive agitation is provided for’ the
suction covering; in which positive means are nozzle lips Ill and I! respectively whicir‘iare pivot
provided which open a pathway for the cleaning ally mounted and, in the operation of are cleaner,
5 air to the deeply embedded foreign particles in _ are provided with an alternate rotary‘inovement
2
2,112,311
through a small arc as hereinafter described.
Each of the lips l0 and II is in two parts or sec
tions and each part extends from one end‘ of the
nozzle to a central supporting member in which
it is pivotally mounted. Each lip member is
mounted upon an axis I2 and is ?xedly secured
thereon by means of securing rivets or screws H,
as shown in Fig. 6. The lips I0 and II are made
of thin metal strips which are wrapped around
10 the supporting axes l2 and the overlapping ends
thereof are secured by rivets l5, l5 to the main
portion of said lips. Clamped between the main
portion of each lip member and the overlapping
edge thereof is a. ?exible strip l6 of fabric which
15 extends the length of said lip member and is
sealed along its opposite side to the wall of the
nozzle 5 and so functions to prevent air leakage
between the lip to which it is attached and the
adjacent nozzle wall. Clamping members l1, H
20 which are drawn tightly against the exterior sur
face of the nozzle by securing screws, I3, l8 serve
to secure each sealing strip to the nozzle wall. At
the outer ends of the lips l0 and H the support
ing axes I2, I 2 are provided with bearing supports
26 .|9, |9 positioned in plates 20, 20 which are se
cured to nozzle ends by securing means 2|, 2|, as
shown in Fig. 3, said plates‘ 20, 20 each being pro-v
above the chamber 48, with a worm gear 5|. Sup
ported by the hollow column 52, as shown in Fig.
1, and rotatably mounted therein is the driven
shaft 53 provided at its upper end with the worm
gear 54 in mesh with the driving gear 5| on the 5
shaft 9. The lower end of the driven shaft 53 is
provided, within the chamber 43, with an of!
center projecting pin or crank- 50 which projects,
as aforedescribed, within the yoke 49 on the end
of the shaft 35.
10
In the operation of the cleaner, as constructed
in accordance with this invention, as the cleaner
is passed over the surface covering undergoing
cleaning the suction within the nozzle 5, created
by the fan 3 within the fan chamber‘ 4, lifts the 15'
surface covering from the supporting surface and
into contact with the nozzle lips l5 and H. The
nozzle lips l0 and II are pile penetrating lips be
ing relatively thin as compared to the usual nozzle
lip, that is, having a thickness of the magnitude 20
of the distance separating adjacent rows of pile
of the surface covering or adjacent tufts of the
same row of pile. In operation they extend into a
covering and separate the adjacent rows or tufts.
The inrushing air into the nozzle 5 must pass 25
under the nozzle lips and, because said lips extend
into the surface covering, said air in passing
vided with a lubricant reservoir 22 to insure the ' thereunder necessarily passes through the cover
ing and near the base thereof. The'nozzle lips,
life of the bearing member l9. Positioned be
30
30 tween and supporting the two interior ends of however, are not stationary in the operation of
the machine but are actuated at high frequency
each half section of the nozzle lips is the power
receiving mechanism indicated generally by the with an arcuate motion about their axes l2. This]
reference character.23,-(see Fig. 5). Mechanism
23 comprises a main body 24 which is provided
35 with upstanding lugs 25~and 25 which are adapted
to be secured to the side walls of the nozzle 5 by
means of securing lugs or screws 21 and 28 re
high speed arcuate movement of the nozzle lips
is provided by the driving motor through the fol
lowing mechanisms: The‘ vertical shaft 53 is driv 35
en from the motor shaft 9 through coaction of
the gears 5| and 54. As the shaft 53 rotates the
spectively. The member 23 is positioned within
off-center pin or crank 53 carried by said shaft
the opening 29 in the nozzle 5 and its lower face
40 30 extends in the plane of the nozzle lips ID and
| |. Positioned within the power-receiving mech
' is also rotated and slides, as it rotates, in‘ the yoke
anism 23, (see Fig.- 5), are toggles 3| and 32'seated
within bearings 33 and 34, respectively, formed in
the body 24. Extending horizontally within the
45 body 24 in the guideway 35 of the power-receiving
mechanism 23 is the shaft 36 actuated by the suc
tion cleaner motor as hereinafter described. The
toggles 3| and 32 extend into theguideway 35 and
are positioned within the recess 31 provided in the
50 shaft 35. The recess 31 is provided with bearing
surfaces 38‘ and 39 at its respective ends for the
projecting rounded ends of the toggles 3| and 32.
Positioned within the groove 3'! and between the
projecting ends of the toggles 3| and’ 32 are the
55 members 4|] and 4| provided with surfaces 42 and
43 which cooperate with the surfaces 38 and 39
respectively to form seats for the projecting ends
of said toggles. A spring 44 positioned between
bearing members 40 and 4| serves to force said
.60 members resiliently, and at all times into contact
with the projecting ends of the toggles.
.
The body 24 is provided with a bottom plate 45
.which is- secured thereto by means of securing
screws“, 46. The member 45 is provided with
65 a smooth undersurface 30 which provides a sur
face-contacting area in a plane with the edges of
the nozzle lips.
'
The drive shaft 36 projects rearwardly from
the power-receiving mechanism 23 (see Fig. 1),
70 under the fan casing 3, through the enclosing
housing 41 and into the chamber formed therein.
The end of the shaft 36 is provided with a yoke 49,
as shown in Fig. 2, which provides a bearing for
a projecting driving crank 50. The motor shaft 9
is provided, within the motor casing and directly
49 of the shaft 35. A reciprocating horizontal 40
movement, the extent of which is determined by
the distance at which the pin 53 is offset from
the center of shaft 53, is imparted to the shaft 36.
At the opposite, or nozzle, endof the shaft 35, are‘
connected the toggles 3| and 32 which, upon the 45
forward and backward movement of said shaft
36, are pivoted in their bearings 33 and 34, respec
tively. As the inner ends of each axis l2 of each
section of the nozzle lips is fixedly seated within
one of the toggles 3| and 32 at its center of rota
tion, the lips receive the same arcuate rotary
movement which is imparted to the toggles by
the drive shaft 33.
-
7
It is clear from the foregoing then that as the
nozzle lips extend into the surface covering and 55
are moved at a-high frequency through a short
arc, the surface covering'is agitated and vibrated,
the dirt particles therein are loosened and dis
integrated, and their removal by the inrushing air
thereunder is made possible.
'
60
Referring now to Figs. 7 and 8 a modi?ed form
of the present invention is disclosed in which ,
the nozzle lip construction is identical with that
disclosed in connection with the preferred em
bodiment. In this embodiment the agitating lips 65
are actuated by means of an electrical vibrate
ing unit, indicated generally by the reference
character 55, which is mounted upon the fan
casing 3 immediately in the rear of the nozzle.
An electrically vibrated element 55 is resiliently 70
connected to an arm 51' which in turn is re
siliently connected to an arm 53 which is pivoted
between its ends at the ‘pivot point 59. The
end of the arm 58 opposite to that to which, the
arm 51 is connected is resiliently attached to a 75
3
2,112,311
tion of the resilient mountings used in the con
and actuating means operatively connected to
said nozzle lip to move said nozzle lip relative
to the suction nozzle and to the surface covering.
6. In a suction cleaner adapted to lift the
surface covering against the nozzle lips, a noz
zle, a nozzle lip pivotally mounted within said
struction illustrated in Fig. 8. A resilient rub
ber member 6|, preferably of two parts, is po
prising a toggle connected to said nozzle lip and a
drive shaft 60 which extends within the power
receiving mechanism 23 and performs the func
tion'therein which was effected by the drive shaft
36 in the preferred embodiment.
In Fig. 9 there is disclosed an enlarged sec
sitioned within a seat 62 in the'arm 58 and itself
10 encloses the connecting shaft’ or pivot pin, here
shown to be the arm 51. The natural resilience
of the rubber seat permits the relative movement
necessary between the parts.
In accordance with the present modi?cation
15 in which the agitating lips are actuated by means
of an electrical‘ vibrating unit, the arm 56 is
vibrated at a high frequency and within certain
nozzle, a nozzle-lip-actuating mechanism com-v
driven shaft connected to said toggle, said mech
anism imparting a reciprocating arcuate move 10
ment to said lip, ,and ‘means to actuate said shaft.
7. In combination in a suction cleaner a rigid
‘nozzle, a thin pile penetrating lip adapted to .
penetrate a tuft of pile mounted on said nozzle,
and means to positively actuate said lip with re 15
spect to said nozzle.
‘
‘8. In a suction cleaner a nozzle, a nozzle lip
de?nite limits within the vibrating unit. The movably mounted upon said nozzle and electrical
vibrating means connected to said nozzle lip to
reciprocating movement of the arm 56 is trans
actuate said lip relative to said nozzle.
20
20 mitted through the yielding connection to the
9. In a suction cleaner, a body including a noz
lever arm 51 which is yieldingly connected at its
end to the pivoted arm 58. The movement of Izle, a nozzle lip pivotally mounted on said noz
the arm 51 is transmitted by means of the arm
58 to the drive shaft 60 which actuates the tog
25 gle mechanism 23, shown in Figure 5, which in
turn actuates the nozzle lips. This embodiment
' differs from the preferred embodiment only in
' the driving means for the agitating lips.
From, theforegoing it is seen that applicant
30 has provided a new and novel suction cleaner
construction in which the function of positive
agitation and cleaning by the use of air have
been combined to produce maximum cleaning
e?iciency. A construction has been provided
which is characterized by new and novel agi
tating means and in which the cleaning air is
directed to the base of the surface covering at
the point of agitation, thereby making possible
the removal of foreign matter that would other
40 wise remain embedded therein.
I claim:
.
p
-
I
1. A ‘suction cleaner including a-rigid nozzle
de?ning a nozzle mouth and a nozzle lip movably
mounted thereon, and means to positively actu
45 ate said lip relative to the suction nozzle.
.
2. In a suction cleaner, suction-creating means
a nozzle open to said suction-creating means and
zle, an electrical vibrator mounted on said body.
and means operatively connecting said vibrator
to said lip.
25
‘
10.- In a suction cleaner, a body including a
nozzle, a lip movably mounted on said nozzle, a
' vibrator including a moving element mounted on
said body. and means including resilient portions
connecting said element to said lip.
80
11. In a suction cleaner, a body- including a
‘nozzle having a mouth, spaced movably mounted
lips de?ning the sides ‘of the mouth of said noz
zle, power-transmitting means connected to said
lips, and actuating means connected to said 35
power-transmitting means to move said lips rel
ative to said nozzle.
‘12. In a suction cleaner, 8. body including a
rigid nozzle having a mouth, a movably mounted
lip de?ning a side of the mouth, means sealing
said lip to said nozzle, and means to actuate
said lip relative to said nozzle.
13. In a suction cleaner, a body including a
rigid nozzle having a mouth, spaced movably
mounted lips de?ning the sides of the mouth of 45
said nozzle, and means to synchronously actuate
said lips-- relative to said nozzle.
I
having a surface-facing mouth, a nozzle lip piv
14. In a suction cleaner, suction-creating
otally and non-rotatably ‘mounted on said noz
means, an air passageway opento said suction
zle for continuous surface covering contact and _ creating means and having a working end adapt 50'
de?ning a side of said mouth, the pivotal axis ed to be placed adjacent a surface covering
of said lip being so positioned that said lip can undergoing cleaning, a reciprocating agitating
assume a multiplicity'ofangular positions dur
element movably mounted adjacent said passage
ing its contact with the surface covering.
'
way and so positioned relative thereto that air
3. A suction cleaner comprising a nozzle and a passes between the element'and a surface cover 55.
nozzle lip thereon, said nozzle lip being pivotaily ing undergoing cleaning in entering said pasmounted, and means to positively actuate said sageway, and vibrating means connected to said
lip relative to the ‘suction nozzle to function as ’ agitating element to actuate said element.
surface agitating means.
’
15. The combination with a cleaning tool hav
4. In a suction cleaner a rigid nozzle vde?ning ing an unobstructed suction inlet and parallel 60
a nozzle mouth, nozzle lips movably mounted
upon said nozzle. at the sides of said mouth, a
toggle mechanism connected to said movable lips
and means to actuate ‘said toggle mechanism and
so move said. lips relative to said nozzle.
,5. In a suction cleaner adapted to lift the
surface covering against the nozzle lips, a noz
zle de?ning a nozzle mouth, a penetrating nozzle
lip movably mounted on said nozzle at said mouth
I
and adapted to extend into said surface covering. I
lips forming two sides of said suction inlet, of .
electrically actuated means for vibrating one of
said lips with reference to the tool.
16. A ?oor tool having an unobstructed suc
tion inlet,‘ ?oor-engaging li'ps at the margins of 65
said inlet, and means for rapidly vibrating one
of the lips of said ?oor tool in operative relation
to the suction inlet.
,
_
DONALD G. sum-rm.
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