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Патент USA US3083568

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April 2, 1963
3,083,558
P. W. DOUGLAS
CLOTHES WASHING MACHINE HAviNG A GYRATORY SUSPENSION SYSTEM
Filed July 7, 1961
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INVENTOR
peyro/u \V DOUqLAé
BY
ATTORNEY
April 2, 1953
P. w. DOUGLAS
3,083,558
CLOTHES WASHING MACHINE HAVING A GYRATORY SUSPENSION SYSTEM
Filed July 7,, 1961
4 Sheets-Sheet 2
/09
IN V EN 1 OR
p2 Yro/v M 0006145
ATTORNEY
April 2, 1963
P. w. DOUGLAS
3,083,558
CLOTHES WASHING MACHINE HAViNG A GYRATORY SUSPENSION SYSTEM
Filed July 7, 1961
4 Sheets-Sheet 3
' l
729.5
INVENTOR
peyrou \l/ DOUCrLAé
BY
??mjz/?f v
ATTORNEY
April 2, 1953
P. w. DOUGLAS
CLOTHES WASHING MACHINE HAVING
Filed July 7, 1961
j" 5
. 3,083,558
GYRATORY SUSPENSION SYSTEM
4 Sheets-Sheet 4
£- 7 INVENTOR
psyrou Il/ DOUQLA?
BY 7FLZAM/7P47~
ATTORNEY
7
3,683,558
rare
Patented Apr. 2, 1963
2
1
more fully understood and appreciated from a considera~
3,083,553
tion of the following speci?cation, taken in conjunction
with the accompanying drawings; and in which
Peyton W. Douglas, Syracuse, N.Y., assignor to Black
stone Corporation, .l'amestown, N.Y., a corporation of
machine, certain of the enclosing parts being broken
away to show, partly in section, the general organization
CLSTHES WASHTNG MAiJHlNE HAVING A
GYRATGRY SUSPENSESN SYSTEM
New York
FIG. 1 is a rear view of a cabinet enclosed washing
of one form of the invention;
FIG. 2 is an enlarged fragmentary vertical sectional
view of the tub mounting, being taken substantially as
This invention relates to improvements in domestic 10 suggested by the line 2-—2 of FIG. 3;
FIG. 3 is a horizontal sectional view of the mounting
washing machines of the type wherein both washing and
and drive means, being taken substantially as suggested
extracting operations are accomplished through the use
by the line 3—3 of FIG. 1;
of a single tub. More particularly, the invention is di
Filed duly 7, 1961, Ser. No. 12.25%
17 Claims. (Cl. 68-23)
rected to a gyratory suspension system for mounting such
a tub.
Many washing machines of the class to which the pres
FIG. 4 is ‘an enlarged fragmentary vertical sectional
View of the stabilizer portion of the mounting structure.
FIG. 5 is an enlarged fragmentary vertical sectional
view of the ?exible mount of the structure;
FIG. 6 is an exploded elevational view of the mounting
and stabilizer structure showing the parts prior to their
tially vertical position through use of hydraulic shock
absorbers, springs, snubbers, balancers, or, in some in 20 assembly with tub and drive shaft; and
FIG. 7 is an exploded view showing the tub support,
stances, parallel to floor shock absorbing pads. All of
spin tubes and drive shaft.
these systems or devices, or some variation thereof, would
Referring more particularly to the drawings, the ref
seem to have a common objection; that is, there is an
erence numeral 16 is employed to generally designate a
ever present tendency to transfer any dynamic off-balance
forces of the tub, during a spinning operation, directly to 25 cabinet for enclosing a washing machine embodying the
structure of the invention. The cabinet 10 includes front,
the cabinet, or frame, in which the entire mechanism is
rear and side walls 11, 12 and 13, respectively. The top
housed. This tends to produce an over-all vibration of
wall 14 of the cabinet has a central opening 16 ?tted with
the frame, and, in many instances, is sufficient to cause
a cover 1'7. The cabinet also includes a base 18 mar
the machine to travel or walk along the ?oor unless rig
ent invention relates include off balance systems or struc—
tures for controlling and supporting the tub in a substan
idly anchored. Substantially all vertical washers have
their plane of damping parallel to the ?oor thereby caus
ing the forced off-balance load or the o?-balance ampli
tude of gyration to more or less skid with the plane of
the ?oor. Thus, off-balance ampli?ed amplitudes will
travel outwardly from such a pivot point, causing consid
ginally de?ned by depending flanges 19 which are suit
ably permanently secured to the lowermost portions of
the cabinet walls.
At each of the four corners of the
cabinet, brackets 21 are provided, with which the threaded
portions 22 of leveling type feet 23 are engaged. Since
the Weight of the entire machine is carried by the base
18, it is suitably reinforced, ‘such, for example, as by
means of a circular ridge 24 and inner upwardly opening
channel 25. As will be further set out, the ridge 24
erable travel, even to the extent of partially or completely
throwing the tub out of period and create undue forced
harmonics should clothes happen to have been poorly dis
serves as a circular seat and support for structure having
tributed prior to commencing a spinning operation. In
many machines the plane of mechanically controlled 40 to do with controlling tub balance. Centrally of the base
18 is an opening 26 in which is located a part of the
damping is parallel to the ?oor and, thus, the pivoting of
mounting structure hereinafter described.
all parts, including the cabinet frame and base, has the
The tub mounting structure comprises three basic ele
?oor as its pivotal focal point. It has been successfully
ments which are a stabilizer 27, ?exible mount 28, and
demonstrated in the course of developing the present in
an anti-notation cone 29. The stabilizer (see FIG. 4)
vention that the more direct vibrations are con?ned to
comprises a ring 39 formed from material of the nature
the vertical, as distinguished from the horizontal, the
of Buna rubber. The periphery of this ring is bonded to
more satisfactory is the damping action which is neces
a collar 31 which projects through the base opening 26
sarily applied to counteract any unbalance of clothes d-ur- '
and includes a radially outwardly extending flange 32
ing a spinning operation.
that laps the walls of this opening and is secured thereto
It is an object of the present invention to provide an
in any substantial manner, as by bolts and nuts 33. The
elastic vertical support or mounting for a washing ma
ring 30, being made of self-damping rubber or the like,
chine tub utilized in both agitating and spin drying clothes
has great damping characteristics within itself and is pro
that minimizes forced unbalance due to uneven load dis
vided with a central opening 34, the wall of which is
tribution in more or less a free state of vibration without
bonded to a sleeve 36 which extends through and beyond
mechanical harnessing.
the ring. The upper end of the sleeve 35 is internally
It is another important object of the invention to pro
vide a stabilizer support for a washing machine tub that
combines a vertical self-‘centering means whereby to
greatly reduce nutation or off-center vertical sag due to
threaded to engage the lower threaded end of a stationary
tube 37. As may be seen in the drawings, this tube pro
for a washing machine tub that is capable of so control
28 which comprises a ring 38 formed from a neoprene
type rubber which has great bonding characteristics as
well as strength and this ring is bonded along its cir
jects approximately half way into the ring 30, leaving an
the tub being unevenly loaded with water and clothes 60 area therebeneath for other structure hereinafter de
scribed.
during a washing cycle.
Above the stabilizer 27 is located the ?exible mount
Additionally, it is of importance to provide a support
ling and supporting any load within the capacity of the
tub that it may be quickly and easily washed and spin
dried.
And it is considered of great importance that the pres
ent invention provides a support for a washing machine
tub that consists of parts so designed and arranged as to
be extremely economical to manufacture, easy to install,
and readily serviceable.
Other objects and advantages of the invention will be
cumference to a sleeve 39. The upper end of this sleeve
has a radially outwardly directed ?ange 41. Centrally,
the ring 38 is formed with an opening 42 in which a
sleeve 43 is located and bonded to said ring and extends
slightly above it as indicated in FIG. 5. A snap ring
44;, engaged with the stationary tube 37, rests on the
upper end of sleeve 43; thus weight carried by the tube
3,083,558
3
37 is transmitted through ring 44 to the mount 28 and
through sleeve 36 to the stabilizer 27.
A further part of the mounting structure is disclosed
by the cone 29 which includes an upper neck portion
that terminates in a horizontal rim 46, having a down
turned inner ?ange 47 de?ning a circular opening. This
opening receives the ?exible mount 28, the flange 41
4
forms no part of the present invention. However, de
tails of the manner in which it is constructed and func
tions are described in the Alvin Lodge Patents No. 2,733,
610, dated February 7, 1956, and No. 2,841,260, dated
July 1, 1958. Projecting upwardly through a neck por
tion 93 of the transmission is a shaft which mounts the
agitator 92. A neck-like housing 94 depends from the
lower ?at base $6 of the unit 91 and this neck restson
the upper end of a sleeve 97 which is enclosed by the
as by an appropriate numberof bolts and nuts, indicated
at 48. The cone, as is clear in FIGS. 1 and 2, has a 10 stationary tube 37. Suitable bearings 12%}, 121 center
the sleeve 97 within the tube 37. An annular brake
vertical step 49 from which a further cone segment 51
shoe 192. is carried by the ?at base 96 of the transmission
continues. From the segment 51, the cone terminates in
unit 91'. When the tub has completed a spinning op
a horizontal base 52 that is of the nature of a circum
eration, mechanism within the transmission lowers the
ferential channel‘having a base wall 53 and an upstand
ing edge ?ange 54. The base channel 52 is of such pro 15 tub, causing the brake shoe 102 to engage the plate 7
and stop rotation of the tub. ,
portions and diameter that it will be superposed on the
Within the tube 37 is located a drive shaft 103. The
ridge 24' of the cabinet base 18. Interposed between the
upper end of this shaft projects into the, depending hous
concentric surfaces of the ridge and the channel base
ing 94 of the transmission in substantially the identical
wall 53 is a friction strip 56 which is preferably secured
manner shown in the above referred to Lodge patents.
to the ridge 24. This strip serves as a vibration triangu
The lower end of the shaft 193 is of reduced diameter, as
lator with respect to the ?exible mount 28, tube 37 and
at 1&4, thus providing an annular shoulder with which
stabilizer 27.‘
'
'
the inner ring of a bearing 1% is engaged. Beneath this
As shown in FIG. 76, the cone 29, just above the step
bearing is a suitable oil seal 107 and a lock ring 198 that
49, has a slot 57. There {are three such slots triangulated
about the cone. A generally T-shaped strap 58 is joined 25 holds the bearing and seal against downward axial move
ment with respect to the sleeve 36 of the stabilizer 27.
to the cone by projecting the stem 59 through slot 57
That end of the shaft 103 extending beyond the sleeve
from the cone inside. This projects the stem 59 outward
36 mounts a pulley 109.
ly just above the step 49 at a radially outwardly inclined
As shown, a motor 111 is mounted on the base 18,
tangle. (See FIG. 2.) A set of three straps 61, each
having a hook 62, are ‘attached thereby to the base 18. 30 eing preferably located at the right front portion there
of. This location is very advantageous when it is con
Springs 63 connect stems 59 with straps 6'1 and, by rea
sidered that wall 11 in FIG. 3 is the front of the machine.
son of this connection, the base 52‘ of the cone 29 is
, thereof resting on the rim 46 and being secured thereto,
urged and yieldingly drawn down onto the strip 56.
The motor is mounted on a pivotal base 112, thus en
rolled ?ange 69 de?ning the tank base opening 63 and
water within the tub, together with the unbalanced weight
abling adjusting the distance between the pulley 113
Within the cabinet 10 is a collector tank 64 which has
a top 65 having an opening 66 therethrough that, in gen 35 thereof and pulley 109 for installation and removal of a
V-belt 114, as well as a belt 116 utilized to operate a
eral, corresponds to the opening 16 in'the cabinet top wall
pump 117. It will be appreciated that with a removable
14. This tank has a bottom wall 67, centrally of which
cover in the lower portion of the front cabinet wall 11,
is an opening 68 de?ned by an upturned rolled ?ange
access may be quickly and easily had, not only’ to the
69. A suitable drain spout 70 is provided in the bottom
67 for connection, in conventional manner, with a drain 40 motor, but also to the belts in the event they become
damaged and require replacement.
age pump later described.
It will be understood that the motor 111 is of the re
A tubular member 72 encloses and is secured to the
versing type and that when rotated in. one direction,
upper end of the stationary tube 37. This member is
mechanism within the transmission unit 91 causes‘ the
radially enlarged at its upper end 73 and mounts an an
agitator v92. to oscillate, and rotation of the motor in the
nular plate 74 which, under certain circumstances of op
eration of the machine, serves as a support for the clothes 45 opposite direction causes mechanism within the unit to
produce a lifting force which raises the tub 82 from off
and water containing tub and as a brake disk by which to
the plate 74 and causes it to spin. Obviously, during a
stop rotation of the tub following a spinning operation.
wash or rinse operation, the tub is stationary and there is
Within the plate 74 is a seal 71 which, as shown in FIG.
no serious concern with vibration control. However,
2, serves to prevent any liquid within the tank 64 from
?nding its'way into the sleeve 37. An annular groove 50 there is a tendency for the tub, to nod, tilt or leanaway
from its vertical axis and the anti-nutation cone e?'ectively
75 in the lower portion of the tubular member 72 receives
overcomes this'possibility. When the tub is raised into
the upper reinforced rim 76 of a resilient boot '77. The
lower return-folded portion 73 of this boot overlies the
spin position and supported entirely by'the shaft 103, the
is suitably clamped thereto. The boot 77 serves to pre 55 of clothes, presents a considerable problem in vibration
vent escape of liquid from the tank 64 except by way of
control. This is true not only during the period required
the drain spout 76.
to attain su?icient speed to dry clothes, but also during
As may be seen in FIG. 1, a liquid and clothes con
taining tub SZ'is provided. At its upper end, this tub
includes annular inward and upward extending ?anges
83 and 84 which de?ne an outer ledge on which is se
cured an annular balance member 86. Conventionally,
the tub inclines slightly inwardly toward its base 87.
This base includes a series of annular, radially inwardly
stepped up ?anges 83 which terminate in an opening 89. 65
The purpose of'this con?guration in the base is to ac
commodate and match a transmission unit 91. This unit
is ?xed to the tub base and includes means for oscillating
an agitator 92 located within the tub, as well as pro 70
the entire spinning operation.
The present supporting structure has been developed
with the idea of presenting a concentric design of all’
operative parts. Starting at the lower end with'the drive
pulley 1&9, stabilizer 27 and ?exible mount 28, it will be
observed that the upwardly continuing structure, includ
ing shaft, sleeves, tub, and dynamic weights thereon, and
even to the agitator cap, eliminates any off balanced re
straining motion. Because of the absence of such restrain
ing forces, the sign pattern of vibration is circular. In
‘addition to the stabilizer 27 and ?exible mount ,28, the
inverted cone 29, in its peculiar arrangement, not only
adds to the e?iciency of damping vibrations but actually
mainly stabilizes the entire tub when it is loaded with
structural and operative parts, provides an adjunct to the
water and clothes in either the washing or spinning posi
entire device in the control of the tub unbalance during
tion. In other words, it vkeeps the tub in :a vertical posi
spinning operations. The transmission unit 91, in itself, 75 tion at all times and is found to be a great addition in
viding mechanism for spinning the tub. This location
of the'transmission unit, together‘with the weight of its
3,083,558
5
6
preventing the tub sagging to one side or another during
the washing stage. It will be noted that the cone is spring
second member cooperating with said ?rst resilient mem
ber to prevent uncontrolled vibrations and provide stable
loaded and, through springs 63, applies a constant pres
entire device is in the vvicinity of the transmission 91 and
operation of the machine.
2. In a Washing machine having a clothes and liquid
receiving receptacle rotatable about a vertical axis, struc
ture for supporting said receptacle comprising a co-axial
any unbalanced load in the tub will not only cause the
stationary tube 37 to move, but the cone 29 as well.
a cone-like device mounted on the base of said machine,
However, such vibration is in large part controlled by the
said device including ?exible means engaged with said
sure on the frictional strip 56.
As may be seen, any excess path of vibration of the
sleeve and a drive shaft depending from said receptacle,
stabilizer 27 and rubber mount 28 and any further or 10 co-axial sleeve at a point remote from said base for trans
more aggravated unbalance is instantly controlled by con
mitting vertical weight and lateral forces to said device
tact with the cone 29 with one area or another of the
and serving as a nutation suppressor when said receptacle
strip 56. This action of the cone is effective in the vicinity
is stationary, and resilient means on said base concentric
of the transmission. It may therefore be stated that any
with and serving to mount and stabilize the lower ends
tendency for vibration to set up and increase in ampli 15 of said sleeve and shaft.
tude is instantly damped to the point of safety and con
3. In a washing machine having a clothes and liquid
receiving receptacle rotatable about a vertical axis, struc
trol by means of the arrangement and combined use of
ture for supporting said receptacle comprising a depend
the rubber stabilizer, rubber mount and cone.
ing drive shaft and co-axial sleeve, a base spaced below
By way of further explanation of the action and effec
tiveness of the present structure, it is stated that the sta 20 said receptacle, a vertically centering device located above
said base and remotely below said receptacle, said device,
bilizer 27 cooperates with the cone 29 to suppress muta
in part, consisting of a cone-like member resting on said
tion; that is, by reason of its location and self-damping
base, spring means urging the lower portion of said mem
characteristics, any tendency of that portion of the struc
ber into frictional contact with said base, and resilient
ture above the vertical ?exible support 28 to lean or nod,
even with a loaded tub, is contained or absorbed. The 25 means on the upper portion of said member encircling
and intermediately supporting said sleeve, above said base,
?exible support 28 includes a rubber ring that not only
and second resilient means as a lower end support for
bonds securely to the inner and outer sleeves 43 and 39,
said shaft and cooperating with said ?rst resilient means
but has such inherent strength that it easily supports the
and said cone-like member to balance the operation of the
weight of a loaded tub and all other structure associated
machine.
therewith. Since the support 28, through cone 29, is sus
4. In a Washing machine having a clothes and liquid
tained by the reinforced cabinet base 18, any load trans
receiving receptacle rotatable about a vertical axis, struc—
mitted to it through sleeve 37 will be distributed over a
ture for supporting said receptacle comprising a depend
large area of the base 18 through the cone rim 52.
ing drive shaft and co-axial sleeve, a base spaced below
Since the rim of cone 29 rests on the strip 56 of the
said receptacle, a laterally slideable device concentric
upper base member 38 and, by reason of the arrange
with said sleeve and mounted on said base, spring means
ment of springs 63, it may be stated that this portion of
urging said device into frictional contact with said base
the structure has some slight load factor when the tub is
at rest.
However, the real purpose of the cone is to
stabilize the tub and contents; that is, keep the tub in a
substantially vertical position. Without this cone, the tub,
with or without load, might tend to sag while in wash
ing position and place unnecessary strain on the stabilizer
27 and support 28. As is clear ‘from the drawings, the
cone 29, through support 28, is so joined to the stationary
and limiting lateral movement thereof, means on said base
concentric with said device mounting the lower ends of
said sleeve and shaft and providing for limited pivotal
movement, and resilient means remote from said base
means and carried by said device, said resilient means
cooperating to prevent nutation when said receptacle is
stationary or contains uneven load distribution when said
tube 37 that it is caused to physically react to any ten 45 receptacle is rotated.
V 5. In a washing machine as claimed in claim 3, where
dency of the tub to lean or tilt. Of course, with the‘ tub
in the cone-like member functions to counteract sagging
at rest, the cone merely prevents leaning. However, when
of the receptacle when stationary during a washing opera
the tube enters a spinning cycle, it invariably contains an
tion.
unbalanced load which would immediately tend to set
6. In a washing machine as claimed in claim 2, wherein
up vibration, the amplitude of which could increase to an 50
the device is slidable to an extent permitted by equally
unsafe extent. Through provision of the cone 29 and
associated parts, any off balance of the tub is prevented
establishing uncontrollable vibrations by reason of the
cone’s contact with the base 18 at each and every point
where vibration may start.’ '
'
spaced tensioning members attached to said device and
the base of said machine.
7. In a washing machine having a clothes and liquid
55 receiving receptacle rotatable about a vertical axis, mount
ing structure for said receptacle comprising a supporting
Although applicant has shown and described only one
form of his invention, it will'be apparent that variations
means having a generally horizontal rigid base, a non
and modi?cations of the structure may be made and are
rotative tubular member supporting said receptacle and
extending axially thereto, a drive shaft extending axially
contemplated as being within the spirit and scope of the
invention as and to the extent set out in the annexed
claims;
‘
'
through said tubular member having a drive means
beneath said base for agitation and‘ spin operations, said
shaft supporting said receptacle in the spin operation, a
member arranged around the lower portion of said tubular
Having thus set forth my invention, what I claim as
new and for which I desire protection by Letters Patent is:
1. In a washing machine having a clothes receptacle
member and mounted on said base, said member extending
rotatable about a vertical axis, structure for supporting
upwardly to an adjacent intermediate point of said tubu
said receptacle during rotation comprising a base, remote
lar member, a ?rst and second resilient member surround
from the bottom of said receptacle, a resilient member
ing said tubular member, said first resilient member being
on said base engaged with and mounting the lower end of
mounted in said base and resisting de?ection of said re
a receptacle sustaining shaft, and a cone-like device hav 70 ceptacle during an agitation operation, said second
ing its rim supported on a cooperative area of said base
resilient member being mounted axially with and above
with the neck portion thereof concentric with and sur
said ?rst resilient member and resisting any orbital out
rounding said shaft at a point above said member and a
of-balance motion of said receptacle during a spinning
second resilient member adjacent said neck portion and
operation, and spring means connecting said second
surrounding said shaft for supporting said receptacle, said 75 resilient member with said rigid base whereby to absorb
3,oss,55s
8
in:
'
J
vertical vibrations and balance horizontal forces through
said member and said base.
_
8. in a washing machine having a clothes and liquid
receiving receptacle rotatable about a vertical axis, mount
ing structure for said'receptacle comprising a supporting
means having a generally horizontal rigid base, a non—rota'
tive tubular member supporting said receptacle and ex-'
tending axially thereto, a drive shaft extending axially
through said tubular member having a drive means
beneath said base for agitation and spin operations, said
shaft supporting said receptacle in the spin operation, a
member arranged around the lower portion of said tubu
jlar member and mounted on said base, said' member ex
material by rotational motion of the tub around a verti
cal axis, shaftlike means extending downwardly from
said tub and axially aligned in relation thereto for sup
porting said tub in its rotational motion, a frame having
a horizontal base spaced below said tub and an upward
ly extending'support circumferentially arranged around
said shaftlike means with an upper end adjacent an inter
mediate point of said shaftlike- means for transferring I
forces applied to said upper end to said base, a ?rst re
silient means positioned between said base and said shaft
like means, a second resilient means positioned between ‘
said upper end of said support and said shaftlike means
intermediate said tub and said ?rst resilient means, said
?rst and second resilient means forming the sole sup-.
tending upwardly to an adjacent intermediate point of
said tubular member, _a ?rst and second resilient member 15 porting means between said frame and said shaftlike
means to absorb’ and balance forces created by’ the‘ ro-v _
surrounding said tubular member, said ?rst resilient mem
tational motion of said tub.
'
ber being mounted in said base and resisting deflection of
12. A vertical type of material conditioning machine
'said receptacle during an agitation operation, said second
as set forth in claim 11 wherein said shaftlike means
resilient member being mounted axially with and above
comprises an outer non-rotating tubular member
said ?rst resilient member and resisting any orbital out-of
mounted in said resilient means and supporting said tub
balance motion of said receptacle during a spinning opera
7 tion, and a thrust bearing carried by said base supporting
thereon, an inner drive shaft with'bearing means for
said shaft and including support .for said receptacle
positioning said drive shaft in said base and imparting
during a spinning operation.
rotational motion to said tub.
9. A vertical type of washing machine comprising a
rigid base extending horizontally for supporting the wash
ing machine on a floor, a tub having a vertical axis, means
‘
13. A vertical type of material conditioning machine
as set forth in claim 12 wherein said bearing means in
cludes a thrust bearing at the lower end of the shaftlike
means for rotatably supporting the drive shaft in said
tubular member and transmitting axial forces to said tu
- arranged around the lower portion of said holding means 30 bular member below said second resilient means.
14. A vertical type of material conditioning machine
and mounted on said base, said enclosure means extend
as set forth in claim 13 wherein said thrust bearing is
ing upwardly to an adjacent intermediate point of said
extending along the vertical axis for vertically holding
said tub‘ in agitating and spin operations, enclosure means
holding means, a first and second resilient bushing form
concentric to‘ said ?rst resilient means.
15. A vertical type of material conditioning machine
ing the sole support for said holding means with the ?rst
resilient bushing attachably supporting said holding means 35 as set forth in claim 11 wherein said shaftlike means
comprises an outer non-rotating tubular member and an
'on said base and said second resilient bushing supporting
inner drive means, said outer member mounted in said
said holding means on said enclosure means at said inter
resilient means to transfer forces thereto and said inner
mediate point for forming a resilient vertical support to
drive means coupled- to said hub forimparting rotational
absorb vertical vibrations and to balance horizontal forces
through said enclosure means and said base.
motion thereto.
16; A vertical type of material conditioning machine‘
10. A vertical type of washing machine comprising a
as set forth in claim 11 wherein said support is mounted
supporting frame having a generally horizontal rigid
on/said base for transference of forces thereto to balance
base, a tub having a vertical axis, a non-rotative tubular
the horizontal forces applied by said shaftlike means to
member supporting said tub and extending axially there
to, a’ drive shaft extending axially through said tu
said base through the ?rst resilient means.
17. A vertical type of material conditioning machine
bular member and supporting said tub in a spin‘ opera
as set forth in claim 16 wherein said support frictionally
tion, drive means below said base for spinning and agi
engages said base and spring means are uniformly ar
tating the contents of said tub, a ball thrust bearing on
ranged around said support and attached thereto and to
said shaft beneath said tubular member and carried by
said base for transmitting the axial thrust from said shaft 50 said base for maintaining the centered relationship of.
to said base on’ the spin operation, a member mounted
on said base and extending vertically towards said tu
bular member, a resilient bushing attached to said base
' and said tubular member adjacent said bearing to‘ re
siliently support said tubular member, said shaft and said
tub and receive horizontal forces, a second resilient bush
ing attached to said member and supporting said tubular
' member at an intermediate point between said base and
said tub to form with said ?rst resilient bushing the sole
supporting means for said shaft, tubular member and 60
tub to absorb vertical vibrations and to balance the hori
zontal forces for preventing the horizontal creep of said
said support to the vertical axis and to transmit the forces
applied to said second resilient means to said base.
References, Cited in the ?le of this patent
UNITED STATES PATENTS
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2,709,908
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Dyer ________________ __ May 8,
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1941,
1945‘
1953
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McWethy ___________ __ May 28, 1957
2,836,993
Johnson et al __________ __ Iune'3, 1958
washing machine during the spin cycle.
2,859,877
' .Sisson ______________ __ Nov. 11., 1958
11. 'A vertical type of material conditioning machine
comprising a vertically orientated tub for conditioning of
2,957,331
Bruckman ___________ __ Oct. 25, 31960
2,967,998
Smith ______________ n, Mar. 28, 1961
;
'
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