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Feb. 14, 1950
2,49 7,685
J. H. PALMER
LOCKING MEANS FOR CLOTHES WASHING MACHINES
Filed Nov. 20, 1947
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Inventor:
John H- Prih’r‘eev‘j
by ¿7W/fl m0?
'Patented' Feb. 14,l 1950
2,497,685
UNITED STATES PATENT OFFICE
2,497,685
LOCKING MEANS FOR CLOTHES-WASHING
MACHINES
John Il. Palmer, Milford, Conn., assignor to Gen
eral Electric Company, a corporation of New
York
appuuuon Nnvember 'zo'. 1947, serai No. 131,11;
5 Claims. (ci. 19a-_3.5)
l
The present invention relates to clothes wash
ing machines of the type wherein washing is per
formed in a basket by an agitator, the basket
afterwards being rotated to centrifugally extract
the water from the clothes.
More particularly it` relates to such a machine
wherein the motor of the machine oscillates the
agitator through a gear train carried by a gear
frame which is stationary during the agitate
cycle and wherein the motor rotates the frame
and gear train as a unit during the spin cycle.
In such machines it is desirable that during the
agitate cycle the gear frame and basket be held
positively from turning and the object of my
invention is to provide an improved mechanism
for performing this function.
_ For a consideration of what I 'believe to be novel
and my invention, attention is directed to the
following specification and to the claims ap
2
to casing 6. Springs 3 are tension springs and
are connected at one end to ears I3 on casing l
and at the other ends to ears I4 fixed to the inner
surface of the side wall of tub I. This arrange
ment serves to provide a yielding resilient mount
ing for the unitary structure comprising casing I,
the mechanism therein, the basket 4, and the
agitator 5. Tub I has an open top closed by a
suitable cover I5 and handles I6 on its sides by
which it may be lifted.
Casing B is shown as being formed in two
sections, an upper section I1 and a lower section
I8. The sections are provided with meeting
flanges I9 which may be clamped together in
sealing relation by studs 20. The motor for
operating the mechanism is located in lower
casing section IB. It comprises a suitable field
structure 20a carried by casing section I8 and
an armature 2i ñxed on a shaft 22.
Shaft 22
pended thereto.
is supported in an. upper bearing 23 carried by
a diaphragm 24 which, at its edges, is supported
In the drawing, Fig. l is a sectional view of a
on a shoulder 25 in casing section I8, and by a
washing machine embodying my invention; Fig.
bearing in lower section I3 which may be in the
2 is a sectional view on a larger scale of the
form of a suitable step bearing (not shown).
operating mechanism, the section of certain parts
being on the irregular section line 2---2, Fig. 4; 25 Casing 6 is suitably sealed to make it liquid tight
to prevent leakage either to or from the casing.
Fig. 3 is a detail view taken on line 3_3, Fig. 2;
On the upper end of motor shaft 22 is a pinion
Fig. 4 is a detail view taken on line 4--4, Fig. 2;
26 which may be formed integral with the shaft
Fig. 5 is a detail view taken on line 5--5, Fig. 2,
and which meshes with a gear wheel 21 mounted
and Fig. 6 is a sectional view of the upper end of
the agitator showing parts in a position different 30 on a shaft 28 which in turn is carried by upper
and lower walls 29 and 3D of a gear frame 3|.
from that of Fig. 2. Formed integral with gear wheel 21 is an eccen
Referring to the drawing, I indicates the tub
tric 32 surrounding which is an eccentric strap
of the washing machine which may be supported
33 provided with an arm 34 which in turn is
on a base 2 provided with feet or casters 3. In
the tub is a unitary structure comprising a spin 35 connected to an arm 35 ñxed to a hub 3S. Hub
3B is supported on the upper end of pinion 26
basket 4 in which the clothes are washed, an
agitator 5 for performing the washing operation,
which forms a step bearing for it. It is con
nected to the lower end of a vertical agitator
shaft 31. Shaft 31 is `journaled in lower and
_agitator to perform the washing operation, the 40 upper bearings 33 and 39 at the lower and upper
ends of a vertical tubular spin shaft 40. The
«basket being then stationary, and for spinning
lower end of spin shaft 40 is fixed in a collar 4I
the basketand the agitator to extract the water
by a pin 4I“ or other suitable means. Collar 4I
from the clothes. This unitary structure may be
and a sealed casing 6 in which is an electric motor
~’ and mechanism operated by it for oscillating the
forms a part of gear frame 3|. Spin shaft 4I) is
supported in the tub in any suitable way, the
specific supporting means forming no part of 45 journaled in a bearing 42 carried in the top wall
of casing section I1. At 42“L is a bearing pressed
my present invention. In the present instance,
into an opening in lower wall 30 in which motor
, it is shown as being supported by a base spring 1
shaft 22 is positioned. Motor shaft 22 has a deep
and three side springs 3. Base spring 1 is posi
socket 43 in which an extension 44 which forms
tioned between a strap 3 fixed to the bottom Il! of
tub I and the bottom of casing 8. The lower end 50 the lower end of shaft 31 is located. Between the
of casing 3 projects through an opening I I in bot
lower end of shaft extension 44 and the bottom
of sprocket 43 is a coiled compression spring 45
tom wall I3. The space between the edge of open
ing I I and the casing 3 is sealed by a suitable flex
which biases shaft 31 in an upward direction.
Spin basket 4 is ñxed to tubular spin shaft 40.
ible diaphragm I2 attached at one edge to the
wall surrounding opening I I and at the other edge
In the present instance the bottom wall of the
2,497,085
4
3
basket is shown as having a conical upwardly
projecting portion 46 which terminates in a
sleeve 41 surrounding shaft 46. At its lower end
sleeve 41 has a flat surface which rests on a col
lar 43 keyed to shaft 43. Collar 43 is fastened
to sleeve 41 by a pin 49 thus connecting the basket
to spin shaft 40.
'
.
Agitator 5 is of known construction comprising
a tubular center post 50 and blades 5|. It is ñxed
to turn with shaft 31 by means of a non-circu
lar opening at the upper end of post 59 which fits
over a non-circular tapered nut 52 fastened on
the upp‘er end of shaft 31 and is held on the
shaft by a knurled nut 52“ which threads onto
the upper end of the shaft. At its lower end,
post 50 is journaled on bearing 53 pressed on
sleeve 41.
,
During washing. gear frame 3| is stationary
and the motor oscillates the agitator through
an annular groove 1| having beveled ends, the
groove being normally positioned above balls 63.
Shift pin 54 holds the balls in either groove 63
or groove 10 to lock shaft 31 against vertical
movement. In Fig. 2 shaft 31 is shown as being
locked in its lower or agitate position, balls 63
projecting partly into groove 69 and being so held
by the outer surface of shift pin 64. To move
the shaft to spin position, shift pin 54 is pressed
down to bring groove 1| into line with balls 68
to release them, 'whereupon shaft 31 may be
moved up to spin position. The balls are carried
along with shaft 31 and as soon as they come into
line with the other groove 13, spring 65 will move
shift pin 64 (pressure on it having been removed)
back to its normal position to force the balls into
such other groove to lock the shaft in its spin
position as shown in Fig. 6. The beveled end of
groove 1| serves to cam the balls outward.
In
pinion 26,’"gear wheel 21, the eccentric connec 20 similar manner shaft 31 may be moved back to
tion and shaft 31. During spinning of the basket
agitate position. This detent construction has
the motor is connected directly to gear frame 3|
to rotate the gear frame, the tubular shaft 40
and the spin basket, shaft 31 and the agitator 5
the advantage that it is positive in action, and no
amount of end thrust will cam the balls out of
groove 69 or 10 because their movement is blocked
being rotated along with the basket.
26 by the shift pin. Shaft 31 can be moved only
Mechanism is provided for connecting the
vwhen shift pin 54 is pressed down. The upper
motor shaft directly to gear frame 3| for spin
end of groove 62 is beveled to act as a cam for
ning the basket. Fixed to the underside of gear
forcing pins 5| outward when shaft 31 is moved
frame 3| is a depending clutch ring 55 adapted to
down from spin to agitate position.
be engaged by suitable clutch facings 55 on the 30 The structure so far described forms no part
of my present invention. Novel features thereof
outer ends of a pair of clutch4 arms 51. The clutch
form subject matter of an application of Carl S.
arms are pivotally mounted on pins 58 carried by
opposed ears which projectfrom a collar` 59 fixed
Dayton. Serial No. 787,228, filed of even date
herewith, and assigned to the same assignee as
to motor shaft 22 by suitable means such as the
pin 30. The inner ends of clutch arms 51 stand 35 the instant application.
adjacent to collar 59 on opposite sides of the col
In a machine of the above-described structure,
it is desirable during the agitate cycle to lock
lar, and in collar 59 and shaft 22 are holes in
which are located sliding pins 6 I. The inner ends
the gear frame 3| against turning movement.
of pins 6| terminate in shaft socket 43 and nor
My invention relates to an improved construction
mally engage the surface of shaft extension 44,
and arrangement for performing this function.
as shown in Figs. 2 and 4. In this position, the
Such locking means comprises a collar 12 on
outer ends of the pins engage the inner ends of
shaft 40 in which is a radial hole in which is po
clutch arms 51, as shown in full lines in Fig. 4,
sitioned a releasing pin 13. Any suitable means
to hold positively clutch facings 56 out of en
may be provided for limiting radially outward
gagement with clutch ring 55. In the lower end 4." movement of pin 13 under the action of centrif
of shaft extension 44 is an annular groove 82.
ugal force. For example, it may be provided with
When the motor shaft is to be connected to gear
a peened over inner end or a head as shown in
frame 3|. shaft 31 and the agitator along there
Figs. 1 and 5. In collar 12 in line with the hole
with is lifted to bring groove 62 into line with
is a notch 14 with which engages the inner end
the inner ends of pins 6|, whereby when the 50 of a locking pin 15. Pin 15 is positioned in a
motor rotates the outer ends of arms 51, being
socket 16 in casing wall |1 and is biased to a po
no longer held by pins 5|, are thrown out by
sition toward notch 14 by a spring 11. In shaft
centrifugal force 15o bring the clutch facing 53
31 is an annular groove 19 having beveled ends
into engagement withl clutch ring 55, whereby
in which the inner end of pin 13 normally stands, the motor armature is connected directly to gear 55 thus permitting locking pin 15 to engageV notch
frame 3| by the centrifugal clutch. At this time
14 to lock shaft 40 and gear frame 3|, to which
pins 8| move radially inwardly, their inner ends
itis attached, against turning. This is its posi
moving into groove 62.
tion during an agitate cycle. When shaft 31 is
Shaft 31 has two positions with respect to
lifted to spin position to release the centrifugal
shaft 40, a lower or agitate position as shown in
clutch so thatit may connect the motor to gear
Fig-2, wherein pins 6| lock centrifugal clutch
frame 3|, releasing pin 13 is cammed outward by
arms 51 against movement, and an upper or spin
the lower beveled edge of groove 18 to move lock-l
position wherein groove 62 is in line with the
ends of pins 6| to release the clutch arms. To
lock shaft 31 in these two positions, a detent
mechanism is provided comprising a socket 53
inthe upper end of shaft 31 in which is positioned
a shift pin 64 biased upward by a spring 65.
upward movement being limited by a stop pin 66
driven across shaft 31 which extends through a
vertical slot 61 in shift pin 64. In the wall of
socket 53 are several circumferentially spaced
holes in which are detent balls 63 adapted to en
gage in annular detent grooves 69 and 13 in the
inner surface of bearing 39. In shift pin 64 is u
ing pin 15 out of notch 14. the releasing pin be
ing moved to a position where it is just flush with
the surface of collar 12. This releases shaft 40.
When ,shaft 40 is turning, the inner end of pin
15 rides on the surface of collar 12.
If desired, the arrangement may be such that
shaft 31 is disconnected from the gearing carried
by frame 3| during the spin cycle. To this end
shaft 31 is shown as being provided with a
tapered non-circular clutch head 30 which fits
in =a socket 3| in a hub` 36 so that when shaft `3'!
is raised to spin position to release the centrifugal
clutch locking mechanism. clutch head -80 is lifted
2,497,685
5
free of socket 8i, hub 36 being then free to oscil
late on shaft 3l'. rI‘his arrangement is of ad
vantage in that in shifting from agitate to spin
it prevents any agitation of the shaft during the
period required for the motor to reach a speed
sufficiently high to effect actuation of clutch arms
51 to connect the motor shaft to frame 3l. At 82
is a pipe which during operation of the machine
the motor actuates the agitator shaft, means for
locking the gear cage from turning when said
clutch is open comprising a collar on the spin
shaft having a locking recess, a spring pressed
locking pin carried by the casing in line with said
recess, a releasing pin movable transversely of
said collar and spin shaft for moving the end of
the locking pin out of said recess, and means car
ried by said agitator shaft for effectively releasWhat I claim as new and desire to secure by '10 ing movement of said releasing pin when the agi
tator shaft is moved axially relatively to the spin
Letters Patent of the United States is:
shaft.
1. In mechanism for use in a clothes wash
directs oil to parts requiring lubrication.
4. In mechanism for use in a clothes washing
ing machine or the like comprising a casing, a
machine or the like, a tubular spin shaft, an
gear cage in the casing, a tubular spin shaft con
nected to the cage, a motor, a clutch for con 15 agitator shaft in the tubular spin shaft movable
axially relative thereto, a locking pin movable
necting the motor to the cage, an agitator shaft
transversely of the spin shaft for holding the
spin shaft from turning, and means actuated by
axial movement of the agitator shaft relatively
means for locking the gear cage from turning 20 to the spin shaft for moving the locking pin from
in the tubular spin shaft movable axially relative
thereto and gearing `carried by the cage through
which the motor actuates the agitator shaft,
when said clutch is open comprising a collar on
the spin shaft having a locking recess, a spring
holding engagement with the spin shaft.
5. In mechanism for use in a clothes Washing
machine, the combination of a fixed casing, a
gear cage mounted ywithin the casing for rotation
with said recess, and means carried by the spin
shaft actuated by movement of the agitator shaft 25 therein, a tubular spin shaft secured to the cage
pressed locking pin carried by the casing in line
axially with respect to said spin shaft for deter
mining the position of the locking pin with re
coaxially thereof, an agitator shaft in said spin
shaft and movable axially relative thereto, a
motor, means for optionally connecting the motor
spect to said recess.
to the agitator shaft or the gear cage, locking
2. In mechanism for use in a clothes washing
machine or the like comprising a casing, a gear 30 means carried by said fixed casing, means for
biasing said locking means into engagement with
cage in the casing, a tubular spin shaft connected
said spin shaft to lock the same against move
to the cage, a motor, a clutch for connecting the
ment during operation of said agitator shaft,
motor to the cage, an agitator shaft in the tu
cam means on said agitator shaft having posi
‘bular spin shaft movable axially to control said
clutch, and gearing carried by the ycage through 35 tions respectively representing a locked and un
locked position of said locking means according to
which the motor actuates the agitator shaft,
the axial position of said agitator shaft relative to
means for locking the gear cage from turning
the spin shaft, and a cam follower carried by
when said clutch is open comprising a collar on
said spin shaft and interposed between said cam
the spin shaft having a locking recess, a spring
pressed locking pin carried by the casing in line 40 and said locking means to urge the latter to un
locked position upon movement of the agitator
with said recess and biased to a position where
shaft to establish the second-named position of
its end is in the recess, and means carried by the
its cam means.
spin shaft actuated by movement of the agitator
JOHN H. PALMER.
shaft axially with respect to the spin shaft to a
position where it permits said clutch to close to 45
REFERENCES CITED
move said locking pin out of said recess.
3. In mechanism for use in a clothes washing
machine or the like comprising a casing, a gear
cage ln the casing, a tubular spin shaft connected
to the cage, a motor, a clutch for connecting the
motor to the cage, an agitator shaft in the tu
bular spin shaft movable axially relative thereto
and gearing carried by the cage through which
The following references are of record in the
file of this patent:
UNITED STATES PATENTS
Number
2,361,767 .
NameV
Date
Hays ............. -_ Oct. 31, 1944
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