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Патент USA US3080071

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March 5, 1963
A. A. FORSBERG
3,080,061
CENTRIFUGE
Filed Feb. 19, 1959
5 Sheets-Sheet I
35 3638
60-/
204'
27
March 5, 1963
smswei
A. A. FORSBERG
CENTRIFUGE
Filed Feb. 19, 1959
I 5 Sheets-Sheet 2
F II 6.
MmmR.
BY
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A‘ Arrow/5y
March 5, 1963
A. A. FORSBERG
CENTRIFUGE
3,080,661
'
Filed Feb. 19, 1959
5 Sheets-Sheet 3 I
> F7616
WMwWTOR'
law/W
'
March 5, 1963
A. A. FORSBERG
3,080,061
CENTRIFUGE
Filed Feb. 19, 1959
5 Sheets-Sheet 4
Q
INVENTOR.
%;=/M@
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‘infra/may
arch 5, 1963
A. A. FORSBERG
3,080,061
CENTRIFUGE
Filed Feb. 19, 1959
'
'
5 Sheets-Sheet 5
38
INVENTOR.
WWW
' Arrae/vzr
llnited States Patent ()?iice
1
3,680,061
Patented Mar. 5, 1963
2
3,tl3il,0dll
Axel Albert Forsberg, Stockholm, Sweden, assignor to
Al'ttiebolaget Eleetrolux, Stockholm, Sweden, :1 corpora
CENTRlFUGE
tion of Sweden
Filed Feb. 1?, P559, Ser. No. 7%,370
Qinirnspriorlty, application Sweden-Feb. 21, 1958
2 Claims. (Cl. 233-249)
FIG. 6 is an exploded perspective view of the mount
ing means embodied in the device of FIGS. 1 to 5;
7 is a perspective view of an additional suspen
sion bracket useful in connection with the mounting
means of FIG. 6, as indicated in phantom lines;
FIGS. 8 and 9 are enlarged fragmentary sectional
views of parts shown in FIGS. 1 and 2, respectively, to
illustrate details more clearly;
FIG. 10 is a fragmentary sectional view taken at line
This invention relates to centrifuge devices md espe 1O ill-dd of FIG. 8;
cially to such devices which are relatively small, portable
PEG. 11 is a perspective view of a washing machine and
and adapted to be detachably mounted on various struc
a portable centrifuge which is detachublymounted there
on and like that shown in FIGS. 1 to 10;
tures, such as tubs, sinks and washing machines, for exam
ple, which are capable of receiving liquid discharged by
‘FIG. 12 is an enlarged fragmentary vertical sectional
the centrifuge. In its preferred form, the invention is
view of a side wall of the washing machine of FIG. 11
especially useful in connection with household devices
and centrifuge frame like that shown in FIG. 6;
for the centrifugal removal of liquid from laundry and
FIG. 13 is an enlarged fragmentary view of parts
the like.
shown in FIG. 3 to illustrate details more clearly; and
A general object of the invention is to devise a small,
FIG. 14 is an enlarged fragmentary sectional view
compact device of the type described which can be readily 20 taken at line 14l—14 of FIG. 1.
removed from place to place and securely mounted, in a
While the invention is applicable to centrifuge appara
quick-detachable fashion, on various kinds of related sup
tus for other purposes, the embodiment chosen for il
port devices.
lustration is a portable household unit useful for so-called
Another object is to devise a household centrifuge ca
spin drying of clothes and the like.
pable of being removably mounted on one wall of a sink
or tub in such fashion that the liquid from the centrifuge
goes directly into the sink or tub.
A. further object is to provide such a device wherein
As seen in F168. 1, 2, 4 and 5, this embodiment com
prises an upright housing it}, of sheet metal, having an
open top and tapering to a smaller bottom end, the top
being equipped with a hinged'cover lit and the bottom
the mounting means, in addition to being quickly-detach
end being closed by a rigidly mounted closure plate 12,
advantageously of glass ?ber reinforced resinous mate
able, includes elastic elements effective to reduce noise
during operation.
rial. From FIG. 4, it will be noted that the front wall
Yet another object is to provide such a device includ
portion of housing it} is of semi-circular transverse cr0ss~
ing an elastic connection between the centrifuge drum or
section, while the side and back wall portions are ?at.
bowl and the driving means in such fashion as to mini
Secured to the top of housing 1G is a liquid collector
mize the transmission of vibrations to the mounting struc 35 7.3, generally similar in plan to the cross-section of the
ture.
housing. Member 13 has inwardly extending part de?n
A further object is to provide a device of the type de
scribed including elastic means both in the centrifuge
drive and in the mounting means for the centr'fuge.
Yet another object is to devise a novel mounting means
by which a portable centrifuge can be hung from the rim
of a sink, tub or washing machine, for example, such
mounting means being readily adaptable for use in con
nection with rims of different thicknesses.
ing at 14 an open-top liquid collecting channel. Mem
ber 13 also mounts, at my suitable point, a hinge 15 for
In or ‘er that the manner in which these and other ob
jects are attained in accordance with the invention can
be readily understood, reference is bad to the ECCOIL'
the cover 11. Cover 11 is provided, on its inner face,
with a central bearing 36 on which is rotatably mounted
a dished centering plate 17. A suitable annular sealing
member 18 is carried by collector 13 for engagement by
the cover, the sealing member including an upwardly ex
ending portion terminating in an inwardly and down
wardly curving annular shroud indicated at 19.
The housing is provided with a transversely extending
partition 29 which is rigidly securcdto the walls of the
panying drawings, which form a part of this speci?cation,
housing and on which is mounted a downwardly extend
and wherein:
ing bearing casing 21. As seen in FIG. 4, electrical
FIG. 1 is a view, partly in vertical section and partly 50 driving motor 22 and its on-o? switch means 23 are
mounted on casing 21. Rotary motion of the motor
in side elevation, of an apparatus constructed in accord
shaft 24 is imparted to the centrifuge drum shaft 25 via
ance with one embodiment of the invention, the right
belts 26 and pulleys 27, 28, as seen in FIG. 1.
hand part at the top of the apparatus being at right angles
Centrifuge drum 29 has an open top, defined by an
to the left-hand part at the top of the apparatus;
FIG. 2 is a partial illustration, in vertical se‘tion and 55 outwardly and downwardly curled lip 36 extending over
the inner wall of collector channel 14, and a transverse
rear elevation, of the apparatus of PEG. 1;
bottom wall in the center of which is secured one mem
PEG. 3 is a part plan view of the apparatus of H8. 1,
ber 31 or" a jaw clutch indicated generally at 32. The
with parts broken away for clarity of illustration;
FIG. 4 is a transverse sectional view taken on line
4-4, PEG. 1, with some parts shown in elevation;
FIG. 5 is a perspective view of the apparatus of FIG. 1
as mounted in one normal position of use, with
of the apparatus shown in open position;
cover
other member of clutch 32 is a block 33 fixed on shaft
60 25' to rotate therewith. Adveutageously, clutch block 33
is fabricated of rubber or like resilient material to provide
an elastic connection between drum 29 and the drive
shaft. Alternatively, one or both clutch elements 31, 33
can be covered with rubber or like material. Top lip 30
3,080,081
.
.
.
3
of the drum is of such size and shape that the outer edge
portion of centering plate 17 will bear against the top
lip when cover 11 is in fully closed position. Such outer
portion of plate 17 is provided, as seen in FIG. 5, with
a plurality of generally radially extending grooves 34
through which liquid can ?ow from the drum and pass to
collector channel 14.
The apparatus includes control mechanism preventing
4
receiving a pin 45b. The pin 45b extends through the
sleeve 45a’ and the rocker plate 45 is ?xed to the ex
treme left-hand end of the pin 45b, as seen in FIG. 9.
To the left of pin 45]: in FIG. 8 the rocker plate 45 is
provided with a rearwardly extending projection 50a,
as seen in FIG. 9, which receives the lower end of a coil
spring 50, the upper end of which is secured to a pro
jection on the bearing casing 21. Hence, the spring 50
operation of the centrifuge when the cover 11 is open
tends to rock plate 45 about pin 45!) in a clockwise
and preventing the cover from being opened when the 10
centrifuge is operating as will now be explained.
direction in FIG. 8.
'
tical movement in a suitable bore in member 13 is a pin
The switch 23 is mounted on a part 480 which is car
ried by and is perpendicular to a plate 48a. The actu
ating member 49 of switch 23 passes through an opening
in part 48c, as best seen in FIG. 8. The plate 48a in
40 about a vertical axis and includes a tab 39, the ar
angular-shaped part of plate 48a is fastened by the pin
Cover 11 carries a dependent lug 35 having a lateral
'open 36. Aligned beneath lug 35 and mounted for ver
"37 biased upward to a normal position by a spring 3711 or 15 cludes a top part of triangular shape and a bottom part
which extends horizontally in a direction from the part
other resilient means. A cover locking lever 38 is
48c carried by the plate 48a. One end of the top tri
mounted on member 13 for pivotal movement on a shaft
45b’ to the hollow sleeve 45a’ of bracket 45a. The oppo
pivotal movement of lever 38 in a counterclockwise di 20 site end of the top part of plate 436: is fastened by a
screw connection 48b to a part 48d ?xed to bearing cas
rection in FIGS. 3 and 13, as viewed from above, will
ing 21. The part 48d is clearly seen in FIG. 8 and hid
cause tab 39 to enter opening 36 in lug 35 to lock the
den from view in FIG. 9 by other parts in front of it.
cover. When pin 37 is in its upper, normal position,
The shape of the rocker plate 45 is best seen in FIG.
however, the pin effectively blocks such movement of
rangement being such that, when cover 11 is fully closed,
lever 38, this blocking action being eliminated when pin 25 8, the left-hand part being in solid line and the right
hand part being in dotted line having a vertical section
37 is fully depressed by lug 35.
inclined to the right toward the switch operating mem
ber 49. A lever 48 of the shape shown in FIG. 8 is
pivoted at one end at 482 to the plate 43a and at its oppo~
' posed near the location of tongue 41 is a knob 42 which,
with linkage to be described, actuates on-olf switch 23, 30 site end is formed with a pair of spaced arms de?ning a
jaw 48)‘ which is operable to move switch actuating mem‘
the knob 42 being mounted on dependent support 428
ber 49 up and. down. The rocker plate 45 is formed
for oscillation about a horizontal axis as shown. Knob
with a cam groove 46 which receives a follower pin 47
‘42 is connected to an arm 43, the arrangement being such
?xed to lever 48 to move the latter vertically and im
‘that knob 42 is turned to pivot arm 43 downward when
switch 23 is to be actuated to energize drive motor 22. 35 part movement to switch control member 49 and render
switch 23 operable to connect and disconnect the motor
When cover 11 is open, and lever 33 therefore is in its
22 to and from a source of electrical supply responsive
non-locking position, tongue 41 is disposed beneath arm
to vertical movement imparted to rod 44 by control
43, as seen in FIG. 14, preventing downward movement
knob 42.
thereof and so preventing energization of motor 22 by
Rocker plate 45 is connected to suitable friction brake
actuation of knob 42. On the other hand, when cover 40
means (not shown) operatively associated with shaft 25
11 is closed and lever 38 pivoted to a position bringing
to brake the shaft when rocker plate 45 is moved in a
tab 39 into opening 36 to lock the cover in closed posi
direction to open switch 23 and de-energize motor 22.
tion, tongue 41 is so located that arm 43 is free to move
Hence, the drum is caused to decelerate as soon as the
'downward, and the drive motor accordingly can be started
45 switch is opened. When the drum has stopped, lever
by turning knob 42.
38 can be pivoted to withdraw tab 39 from opening 36,
The linkage means interconnecting arm 43 and switch
tongue 41 no longer being blocked, since, in order to
23 includes a generally vertically extending push rod
open switch 23, knob 42 has been turned to swing arm
'44, the upper end of rod 44 being pivoted to arm 43 and
43 upward, above the plane of movement of the tongue.
:the lower end being disposed below partition 20 and ad
jacent bearing casing 21, the rod passing freely through a 50 In operation, wet clothes or the like to be centrifuged
are placed in drum 29, cover 11 is closed and locked
suitable opening in the partition.
by action of lever 38, and knob 42 is operated to start
The partition 20, which divides the upright housing 10
motor 22. As drum 29 rotates, the liquid is thrown out
into top and bottom compartments 10a and 10b, respec
ward by centrifugal force and, since the wall of drum
tively, is provided with an upwardly extending hollow
>29 ?ares outward and upward, the liquid ?ows upward
sleeve 20a at the opening through which the rod 44
‘passes through the partition. The lower bent end 44a 7 along the drum wall, outwardly via grooves 34 in center
ing plate 17 and into collector channel 14.
of the rod 44 is pivotally connected to the upper part 45c
At the rear of the device, member 13 is provided with
of a rocker plate 45 by a connector 144 having an upper
openings 51 which conduct the liquid from channel 14
sleeve portion 144a, a lower U-shaped portion 144b and
to a drain board or plate 52 disposed to discharge into
‘a vertical connecting arm 144c therebetween. The rod
a tub or other receiver 53 and on which the device is
44 passes through the sleeve portion 144a and the spaced
mounted, as shown in FIG. 11. When the ?ow of water
'arms of the U-shaped portion 1144b have aligned open
over plate 52 terminates, the motor is stopped, the cover
ings to receive the lower bent end 44a of rod 44 which
unlocked and opened, and the clothes removed from the
also passes through an opening in the upper part 450 of
vrocker plate 45, as best seen in FIGS. 8, 9 and 10. The 65 drum.
While all of the liquid from within the drum is con
vertical connection 144a extends downward from the
veyed out to the drain plate as just described, some con
'sleeve portion 144a at an acute angle to the vertical and
Below the lever 38 the shaft 44} carries a laterally ex
tending tongue 41, as seen in FIGS. 1, 2 and 14. Dis
is connected at its lower end to one arm of the lower
densation may occur on the outer surface of the drum.
Hence, a suitable drain pipe (not shown) may be pro;
‘Ll-shaped portion 144b, as best seen in FIGS. 9 and 10.
Keeping in mind that FIG. 9 is a view looking toward 70 vided which extends downward through partition 20
and bottom closure plate 12 to remove any liquid formed
the left in FIG. 8, it will be seen that a bracket 45a,
which is mounted on bearing casing 21, extends down
ward with its broad side (seen in FIG. 9) facing the
lower end of rod 44. The bottom of bracket 45a is pro
vided with a looped portion 45a’ forming a hollow ‘sleeve
by such condensation.
The apparatus is provided with a suitable frame for
detachably supporting it on a laundry tub, bath tub, sink,
washing machine or other suitable structure. This frame
3,080,061
5
or bracket comprises a main, metal member including a
lower, generally ?at portion 59, adapted to extend under
and be secured to bottom closure 12, and an upright
portion 60 adapted to extend along the rear wall of hous
ing 10, upright portion 60 terminating in a ?at upper
end to which is connected _a hook 61 having at 61a
channel-like con?guration adapted to engage over and
grip the rim of the washing machine 53. This entire
bracket can be formed integrally from a single piece of
steel plate. Lower portion 59 of the bracket means is
secured to bottom closure plate 12 by screws 59:: and
elastic blocks 54‘), as will be clear from FIG. 6.
Adjacent the juncture between portions 59 and 66 of
6
can then be disposed between elements 66 and 61. Ele
ment 60 can be resilient, if desired.
With hook portion ‘61 of the main bracket means (or
?ngers 71 of the adapter bracket) engaged over the rim
of a tub wall or the like, the spacing of suction cups 62
rearward of the centrifuge then determines (in one plane
of movement) the angle at which the axis of rotation of
drum 29 is disposed with respect to the horizontal. To
make this axis vertical, screws 66 are loosened, so that in
10 view of slot 67, which extends from front to rear of the
apparatus, the plate 65 can be adjusted to increase or
decrease the spacing of the suction cups, screws 66 being
again tightened after the proper adjustment has been
the bracket means, the same is provided with rearwardly
made. Such adjusta'bility of foot bracket plate 65 and
facing suction cups 62 serving to bear against, and attach 15 its suction cups is of particular importance, if the ap
to, the side wall of the washing machine 53 upon which
paratus is to be mounted on various types of tubs and
the centrifuge is supported by the bracket. To facili
washing machines, for example, since the tub wall or
tate detachment of the suction cups from such side wall,
the like on which the apparatus is mounted may slant
the cups are provided with ?nger grips 63, FIGS. 1 and
from the top rim either away from the centrifuge or to
8, in the nature of radially extending outer tabs.
20 ward the centrifuge, or may be vertical.
As illustrated in FIGS. 1 and 6, the suction cups 62
Foot bracket plate ‘65 is provided with a dependent
can be attached to the upright ?ange 64 of a foot bracket
peripheral ?ange 74, FIG. 1, to form a base support for
plate 65, plate 65 being secured to portion 59 of the
the centrifuge, as when it is stored. Thus, the centrifuge
bracket by scews 66 extending through slot 67 in plate
can be stored by being placed on the floor of a storage
65 and tapped into plate 68 which engages the upper
space, or by being placed within a tub and washing
surface of bracket portion 59. It will be noted that the
machine, for example, in which the bracket v69, or the
suction cups 62 are disposed generally at the bottom of
main bracket, can be employed to suspend the device
the apparatus, face to the rear and are spaced.
from the rim of the tub or liquid receiver.
Where the centrifuge is to be mounted on the wall of
The various elastic elements, including the elastic mem
a tub or the like having a relatively thick rim or edge,
her or members of clutch 32, the foot blocks 54b and
the supplementary adapter bracket 69 of FIG. 7 is em
the suction cups ‘622, assure that, when the centrifuge is
ployed. Bracket 6? comprises a main body 70 of in
mounted and in operation, only a minimum amount of
verted U-shaped channel con?guration which engages an
vibration will be transmitted to the tub, sink, washing
inverted U-shaped lip portion 61a of the top hook of the
main bracket, and a pair of spaced ?ngers 71 which pro
ject in a direction which is rearward of the centrifuge
when the bracket 69 is in place thereon. Fingers 71
have downwardly offset end portions, so that the ?ngers
can be engaged over the thick rim 72 of a tub or the
like. Body 71} of bracket 69 has two spaced slots 73,
extending transversely relative to the length of the in
verted channel de?ned by the body portion. Between
these slots, the central portion 702“ of body 70 is dis
placed upward relative to the end portions 70*’. Inverted
U-shaped end portions 70*’ have a radius of curvature
such that they may nest within the channel portions 618
of hook 61. Central portion 7i)a has a radius of curva
ture such as to embrace channel portion 61*‘. In mount—
machine or the like on which the unit it mounted.
Such
vibration damping features are particularly important
when ‘the centrifuge is intended for use in a kitchen, bath
room or other room of a dwelling, where noise is an
objectionable factor.
What is claimed is:
1. In combination, a liquid receiver including a ver
tically extending wall having a rim at its top edge, an
independently operable portable liquid extracting unit
comprising an open-‘top casing having a bottom and up
standing side wall, a cover for the casing, a rotatable
drum in the casing for centrifugally extracting liquid
from laundry, a drm'n plate ?xed to the casing at the
vicinity of the cover which receives liquid extracted cen—
trifugally by the drum for discharge into the receiver,
ing the supplementary adapter bracket 69, the same is
placed with its channel con?guration in endwise align 50 structure ‘disposed within the casing for rotating the drum,
ment with the channel portion 619' of the main bracket
means, and bracket 69 is then slipped in place with por
a frame having an upright arm and a bottom horizontal
the main bracket can be made as a separate element fas
tened to upright 60 by sheet metal screws or the like,
as seen in FIG. 1, and that elastic material (not shown)
shaped parts of the channel.
base, means for resiliently supporting the casing in an
upright position on the bottom horizontal base of the
tion 612. passing through slots 73, as shown. The free
frame, hook means for detachably hanging the frame
edge of hook 61 engages the top of ?ngers 71 to prevent
the latter from pivoting upward. It will now be seen 55 from the rim of the vertically extending wall, the drain
that the U-shaped channel 70 essentially is formed with
plate being disposed over the hook means and projecting
spaced legs, the ?ngers 71 forming part of one leg and
horizontally beyond the hook means from the top open
the inverted U-shaped parts 70a and 76b forming part
ing of the casing, the hook means including a member in
of the other leg. The ?ngers 71 de?ning part of the one
the form of an inverted U-shaped channel having spaced
leg overlie the rim 72 and engage one face of the verti 60 legs, the top edge of the upright arm of the frame being
cally extending wall, and the inverted U-shaped parts
bent back upon itself to form an inverted U-shaped lip,
70a and 70b coact with the lip 61a at the upper end of
the inverted U-shaped channel member having one leg
the frame. The outer convex surfaces of the parts 701)
overlying the rim and engaging one face of the vertically
engage the inner concave surface of the lip 61a and the
extending wall and the other leg formed to provide a
inner concave surface of the part 76a engages the outer
plurality of inverted U-shaped parts, at least one of the
convex surface of the lip 61a. The lip 61a and channel
parts having its outer convex surface in engagement with
70 are movable lengthwise with respect to one another
the inner concave surface of the lip and another of the
to remove and connect the lip 61a from and to the
parts having its inner concave surface in engagement with
U-shaped parts 70a and 70b of the inverted U-shaped
channel 70 which are offset from one another lengthwise 70 the outer convex surface of the lip, the lip and channel
being movable lengthwise with respect to one another to
of the channel.
remove and connect the lip from and to the inverted U
It will be understood that the top hook portion 61 of
2. Apparatus as set forth in claim 1 in which the in
verted U-shaped parts are offset from one ‘another length
3,080,061
1,971,466
2,103,106
wise of the channel, adjacent inverted Urshaped ,pavxts
being spaced from one another.
References Cited in the ?le of this patent
UNITED STATES PATENTS
_ 1,536,890
,
1,772,863
1,775,048 ,
1,815,934
_ 1,969,177
9 2,302,300
5
Lagemann ____________ __ May 5, 1925
Green ______________ __ Aug. 12, 1930
Papworth ____________ __ Sept. 2, 1930
Stephens et a1. ______ __ July 28, 1931
Kirby _______________ __ Aug. 7, 1934 10
2,448,157
2,515,538
2,738,072
2,859,877
8
Schaum ___________ ..____ Aug.
Yurkovitch __________ __ Dec.
Davies ______________ __ Nov.
28, 1934
21,1937
17, 1942
1948
1950
1956
Schneider ___________ __ Aug. 31,
Wall _______________ __. July 18,
Knight _____________ __ Mar . 13,
S1sson ______________ __ Nov . 11,
1958
FOREIGN PATENTS 7
15,203/33
Australia ____________ __ Oct.
10, 1934
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