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Патент USA US2411960

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Dec._ 3,
1946.
J. B. DYER
2,411,960
DOMESTIC APPLIANCE
Original Filed Jan. 8, 1940
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3 Sheets-Sheet. 1
Dec. 3; 1946.
J. a. DYER
2,411,960
DOMESTIC APPLIANCE
Original Filed Jan. 8, 1940
220
To Pr
12‘! ZZZ
j
2Z6
3 Sheets-Sheet 2
Dec. 3, 1946.
'
‘ J_ B, DYER
1
2,411,960
DOMESTIC APPLIANCE
Original Filed Jan. 8, 1940
no
\J
3 Sheets-Sheet 3
Patented Dec. 3, 1948
2,411,960
UNITED STATES PATENT OFFICE
2311,!“
DOMESTIC APPLIANCE
JohnlDyenSyraonsaN. Yua-ignortoGeneral
Motors Corporation, Dayton, Ohio, a corpora
tion of Delaware
Original application January 8, 1940, Serial No.
812,837. Dlvided and this application March
13, 1943, Serial No. 479,”:
1
'
3 Claims.
This invention relates to a domestic appli
ance, and more particularly to washing ma
,
(Oi. ca-izi
2
tatable agitating means having a helical vane
for agitating the washing ?uid and the clothes
in the spinning basket during the washing and
This application is a division of my copendlng
periods. The agitating means is con
application Serial No. 312,837 ?ied January 8. 6 nected through the bottom of the basket by a
chines.
'
1940 now Patent No. 2,331,897 issued Oct. 19,
vertical shaft which may be a vertical extension
1943, and is particularly directed to the auto
of the motor shaft of an electric motor which is
matic‘ control means for controlling the washing
?exibly mounted beneath the spinning basket.
machine.
The spinning basket is rotatably mounted upon
It is another object of my invention to provide 10 a sleeve surrounding the. shaft connecting the
in a washing machine a simple, durable, inex~
motor and the agitator, and this sleeve is pro
pensive means for providing an automatic change
vided at its lower end with a movable clutch
from the washing or agitating period to the dry
plate which normally rests in engagement with
ins period.
.
a braking member. A clutch is also provided
It is another object of ‘my invention to provide 15 upon the motor shaft for lifting the clutch plate
a simple, inexpensive, automatic control for the
from the braking surface and making frictional
introduction of washing fluid, as well as wash
engagement with the clutch plate to drive the
inmgigsinganddryinginadirectdrivewashing
spinning basket forcentrifugal drying of the
It is still another object of my invention to
is provided for controlling the introduction of
washing ?uid into the basket and for operating
me
c
provide an automatic direct drive washing ma- .
chine operating through a means common to
both the agitating means. and a centrifugal dry
ing means at motor speed.
Further objects and advantages of the present
invention will be apparent from the following
description, reference being bad to the accom
panying drawings wherein a preferred form of
clothes in the basket.‘- An electric control means
the motor and the clutch means. In a modi?ed
form, a reversing driving motor is provided
which, by reversing, controls the clutch means
to provide an agitating period and a spinning
period in opposite direction of rotation.
The casino and framework
~ the present invention is clearly shown.
In the drawings:
Fig. l is a vertical sectional view through a
washing machine embodying one form of my
invention;
‘
Referring now to the drawings, and more par
ticularly to Fig. 1, there is shown a washing ma
chine including an ornamental sheet metal cas
ing Ill within which is provided a supporting
frame construction which includes four diagonal
Fig. 2 is a wiring diagram of the automa
control mechanism for the washing machine 35 supports 22, each provided at their lower ends
with an adjustable glide It for supporting the
shown in Fig. l;
.
washing machine upon the ?oor. The lower ends
Fig. 8 is a view of the operating knob and dial
of the diagonally opposite diagonal supports II
for the automatic control mechanism shown in
Figs. 1 and 2:
‘
are connected by straps 26 having their extreme
Pig. 4 is a sectional view of the’ water mixing 40 end portions It turned upwardly and fastened
valve she
in Fig. l;
to the inner face of the sheet metal casing 2|.
Fig.5isawiringdisgramforanautomatic
The upper ends of the diagonally opposite diago
nal supports 22 are connected to bowed connect
control of a modi?ed form of washing machine;
‘ Fig. 6 is a form of clutch control for the modi
ing members II which are fastened together by
lied washing machine replacing the clutch con
a rivet 82 at the intersection of the members ll.
trol shown in Fig. 1:
' .
The upper ends of the members II are each pro
Fig. 'l is a view of the drlvingmotor and casing
vided with an aperture which receives a stud ll
including the modified clutch. control shown in ‘ at the end of a rubber connecting member ll
Fig. 6; and
extending from the ?ange it at the upper end
Pig. 8 is a sectional view taken along the line
of the motor casing 88. The rubber connecting
H of Fig. 6.
member ll resiliently locates the upper end of
the motor mounting of the electric driving mo
Brief description
tor it within the framework provided by the
diagonal supports 22 and the connecting
Brie?y. I have shown a washing machine pro
vided with a spinning basket containing s ro
members.
2,411.0“a
3
The agitator and agitator drive
The rotor of the electric motor 38 is provided
with an upwardly extending shalt 42 having a
thimble-shaped agitator ll threaded onto its
4
the bearing sleeve 52. The lower end of the sleeve
ll below the bearing portion 8‘ is, as mentioned
before, provided with a clutch plate Ii, This
clutch plate I6 is splined or otherwise connected
to the bottom oi’ the sleeve 54 so that it can move
upper end. This agitator-‘44 has a wide tapered
vertically, but cannot rotate with respect to the
?ange 46 forming a skirt portion and a post por
sleeve 54. A clutch spring 86, retained by a re
tion 48 provided with a spiral vane 50. when
tainer ring Bl ?xed to the sleeve 54, is provided
this agitator it is rotated at motor speed. the
for holding the clutch plate ill at the bottom of
water in the tub is churned to wash the clothes. 10 its lower limit of vertical movement relative to
The tub spinning drive
Surrounding the shaft 62 is a bearing sleeve 52
‘the sleeve It. At its Periphery, the clutch plate
It is provided with a clutch facing 99 normally
held in engagement with a brake ring 92 which is
provided within the housing of the motor 3!.
Within the brake ring 92, there is provided a
and surrounding the bearing sleeve 52 is a driving
sleeve 55 connected at its lower end to a clutch
plate 56 and at its upper end to a flanged con
movable clutch disc 91 which is fixed to a. clutch
nector member so which is fastened by means of
collar 88 which, in turn, is splined or keyed to
the plate so and the bolts t2 to the bottom of the
the drive shell; 42.‘ This clutch collar 88 is pro
spinning basket or tub es.
vided with a groove engaged by a forked lever ill
20 which is pivoted to a. support i?l and connected
The tub construction
at its outer end by a link I!!! to the plunger of a
This spinning basket or tub B5 is provided with
solenoid magnet i0! anchored to a bracket i?'l
an inner basket member 58 which includes an o?- ‘
set bottom portion B8 containing a plurality of
drain apertures ‘ill. At the mldportlon oi the side
of the basket member 68 are additional drain
apertures 12. The upper portion of the basket
member BB is tapered inwardly and provided with
a strengthening ?ange ‘l4.
‘
extending irom the housing of the motor 38. The
clutch plate 58 is provided with a second clutch
racing I09 located within the con?nes o! the
clutch lacing 90, so that when the solenoid'i?l
is energized, the lever 98 will be pivoted in a
clockwise direction to move the clutch disc into
engagement with the clutch lacing iiil, thereby
Surrounding the basket member ‘I is a ?ume
clutching the driving motor 38 to the sleeve 84
member ‘I6 which Joins ‘the basket member 8' at 30 and the tub i4, and at the same time lifting the
the bottom of the offset portion 08 to make a dou
clutch facing 90 away from the brake ring ‘I.
ble thickness 01' metal which extends between the
when the solenoid i0! is deenerglzed, the clutch
members 58 and iii and is clamped therebetwoen
disc 94 will move downwardly, allowing the clutch '
by the bolts 82. The portion of the ?ume member
facing 90 to again engage the brake ring I: to
18 beneath the apertures 12 is spaced from but
stop the tub B4 and then the clutch disc 94 will
closely conforms to the shape of the adjacent
move away from the clutch facing I” to discon
portions of the basket member 88. However, the
nect the motor it from the sleeve 54 and the
remaining portion of the dome portion ‘i6 tapers
tub 84. It should be noted that the spring II
outwardly slightly and at its upper edge is pro 40 is contracted more and tbereiore exerts a greater
vided with an out-turned ?ange ‘i8.
‘
pressure when the clutch disc 84 hits the clutch
This out-turned ?ange 18 extends over the dis
plate 58 than when the clutch plate II is in en
charge ?ume Bil which is provided upon the in
gagement with the brake ring 92. This servesto
side walls of the casing 20. The bottom wall 02
compensate for the smaller size of the clutch
this discharge ?ume 80 is provided with a slope,
racing I". Thus, by this construction, there is
so that itdralns to one side where there is lo
provided a'very simple means tor clutching the
cated a. discharge pipe 82 which extends directly
tab to the driving motor and tor stopping the tub.
downwardly.
Effect of rotation of agitator and tub
The construction is such that i! the agitator H
is rotated at motor speed and the tub member
i4 held stationary, the washing ?uid in the
tab
will i be
agitated
in a
doughnut-shaped
The motor support
The bottom 01’ the housing of the motor ‘3| is
supported by supporting member Hi which, in
turn, is supported by a bracket H2 held in place
by the rivet 32. The connecting members 18 and
30 are sui?ciently ?exible to allow some move
path. When the tub 81 is rotated, the washing 55 ment of the motor as and tub u with the cen- '
?uid will be pumped out of the-?ame member ‘II
ter of movement about in the location 0! the
and thrown over its ?ange 18 into the discharge
rivet 32. This will provide a means for absorb
?ume 80, from which the washing ?uid will be
ing vibration within the rubber members ‘0.
drained by the discharge pipe 82. This action
The water supply system
will pump the greater portion of the washing ?uid 60
from the basket member 88 through the apertures
For supplying water or washing ?uid to the’
‘id in the bottom of the tub so that the suds and
tub 64, there is provided ‘a pipe H8 extending
curds which ?oat on top of the water will be
upwardly through the‘ bottom of the discharge
drained through the, apertures 18 while the cloth
home 80 and provided with a spout ill extend
ing lies around the midportion oi the basket 65 ing
over the rim ‘ll of the basket I} so as to dis
member covering the apertures 12. The aper
charge the water. or washing ?uid into the tub
tures '12 are employed for providing a. means of
64. 'At the bottom vof the pipe H3, is provided‘ a
escape tor the remaining portion oi’ the washing
mixing valve II‘! which is shown in section in F18.
fluid which cannot be removed through the aper
4. This mixing valve all is connected to a hot
tures ‘N.
water inlet pipe H9 and a. cold water inlet pipe“
“I. Within the housing of the valve H1 there
.The clutch and brake construction
is provided a butter?y valve I23 between the
The upper-portion 88 of the housing of the
connection to the hot water inlet pipe ill
motor 38 is provided with a bearing section 84
and the cold water inlet pipe iii. This butter
which surrounds and supports the sleeve 54 and 75 ?y valve I23 is actuated by a spiral bimetal ther»
9,411,0130
6
mostat I25 which is located adjacent the hot wa
ter inlet pipe II9. This bimetal thermostat I25
The initial hot water charlie
is so set as to hold the butter?y valve I23 open
an amount su?lcient to mix the cold water and
The contact arm I35 also conducts current to‘
the slide contact I“ and to the contact slide ‘ ‘
the hot water coming from the pipes I2I and H9
I41. This contact slide I41 is, in turn, connected
by the conductor I3I to a bimetal timer I33 which
plied to the pipe H3 and to the tub 34.
cooperates with and operates between the con
The hot water inlet pipe H9 is provided with
tacts I55 and I31. The bimetal timer I53 in
a solenoid valve I21 which is opened when ener
cludes a cantilever-supported bimetal strip pro
gized and closed when deenergized. The cold 10 vided with a snap-action spring at its free end
water inlet pipe I2I is provided with a similar
similar to the construction of the Lewerenz' Re
valve I29. By this arrangement, when the cold
issue Patent 16,654. The contact I35 is connect
water valve. I23 is closed and the valve I21 is
ed by a conductor I69 to a conductor HI. This
opened, only hot water is discharged into the tub
conductor “I has one end connected to a sole
54. However, when both the valves I21 and I29 15 noid I13 and extends to the supply conductor
are opened, the butter?y vaive I23 will so pro
I53 while the other end connects to the contact
portion the amount of water flowing through the
slides I15 and I11. When the contactor I35 has
valve II1 that tempered water will be supplied to
the slide contact MI in engagement with contact
the tub 34.
slide I41, and the bimetal timer I33 is in engage
20 ment with the contact I35, electric current will
The automatic control system ,
?ow from the conductor I55 through the contact
so as to cause properly tempered water to be sup
line I35, the contact slide “I, the conductor iii,
An automatic control I3I provided with a con
the bimetal timer I63, the contact I39 and the
trol knob I33 upon the outside oi‘ the casing 23
conductor I1I, which includes a solenoid I13 to
is provided for automatically controlling the
washing machine. This automatic control, as is 25 the power source I53. This will cause the sole
noid switch I19 operated by the solenoid I13 to
better shown in Figs. 2 and 3, is so made that the
close the circuit which includes the conductors
knob I33 can be turned to any desired washing
.I3I and I33, as well as the solenoid of the hot
period from 1 to 15 minutes and the complete
water valve I21 so that current will flow from the
washing, rinsing and drying operations will be
thereafter automatically performed, after which 30 source conductor I5I through the solenoid of the
hot water valve I21 to the source conductor I53
the machine will be stopped automatically. As
to open the hot water inlet valve I21. This cir
shown in Fig. 3, indices “off,” “on” and “wash
cuit, however, will only be maintained for a rela
ing period" are provided on the outside of the
tlvely short time until the tub 64 receives an ade
cabinet which cooperate with the knob I33 pro
vided with the indices “0,” “5,” "l0," and “15.” 35 quate supply of hot water. The amount of this
supply is timed by the bimetal timer I53 which
When the knob I33 is turned to the "off" position,
when heated su?iciently will leave the contact
everything is deenergized and the entire machine
I35 and move into engagement with the contact
is idle. In order to start the machine, the knob
must be turned so that some point between the
I51.
indices "0” and “15" is placed opposite the wash 40
ing period. This will govern the length of time
the clothes are washed.
This knob I 33 is con
nected to a rotatable contactor I35 which is
shown in Fig. 2 in a position it assumes when
the knob I33 is turned to start the machine.
This rotatable contactor I35 is directly con
nected to the knob I33 and also to a timing driv
ing motor I31 which is preferably of such a type
having a relatively constant speed and prefer
'
The washing period
When this is done, the curernt will then flow
through the conductor I35 including solenoid I31
to the supply conductor I53.’ This will close the
solenoid switch I33, thereby completing the cir
5 cult from the conductor i5I through the con
ductors I3I and 193 and through the driving mo
tor 33 to the supply conductor I53. This will
cause the driving motor 33 to rotate the agitator
44 at motor speed. This agitator 44, through its
ably it is somewhat similar to the motor of an 50 spiral vane 53, will cause agitation to take place
electric clock. This contactor I35 is provided
at all points within the tub. The tub 34, however,
with ?ve sliding contacts designated by the ref
at this time will remain stationary because of
erence characters I“, I42, I43, I44 and £45.
the engagement oi’ the clutch facing 35 with the
brake ring 32 under the in?uence of the spring
The timing driving motor
55 33.
The contact I 4| is shown in engagement with
All during the washing period, the length of
the stationary contact slide I41. The sliding
which is governed by the initial setting of the
contact I45 is shown in engagement with the con
knob I33 and the contact arm I35, the motor
tact slide I49. The conductors IN and I53 con
33 will remain energized to agitate the clothes.
nect to a suitable source of electric energy. The 60 When the knob I33 is set for the full ?fteen min
conductor I 5I is, in turn, connected'by the con
ute washing period, the contact arm I35 will be
ductor I55 to the rotatable contactor I35. This
gin at the lower end of the slide I41. For a lesser
rotatable ccntactor I35 provides an electrical
period, the contact arm I35 will be initially set
connection with the sliding contact I45 and the
at an intermediate point upon the slide contact
contact slide I43. The contact slide I43 is, in
I41. When the contact arm, which is continu
turn, connected to the conductor I51 which, in
ously rotated by the motor I31, reaches the end
turn, connects to the timing driving motor I31 01
of the slide contact I41, the solenoid I31 will be
an automatic control. This timing driving mo
deenergized. thereby opening switch I33 and de
tor I31 is, in turn, connected by the conductor
energizing motor 33.
I59 to the supply conductor I53. This will start 70
The first spinning Operation
and keep in operation the timing motor I31 for
the duration of the entire washing, rinsing and
A short time after this, the contact III will
drying operations, since the contact slide I49 is ' engage the contact slide I33 which is conncted by
su?iciently long to keep this circuit closed
a conductor I35 with a conductor I35 and the
throughout these operations.
solenoid I31 so that the solenoid M1 and the
9,411,860
7
motor II will ‘be again energized and start op
eration of the motor. However, at this time also,
the contact Il2fwill also engage the contact slide
_ switch 222 which will close an electric circuit to
allow current to ?ow from the supply conductor
I5I through the conductors 224 and 229, as well
I91 which is connected by the conductor I99 to
as the solenoid oi’ the cold water valve I29 to
the supply conductor I59 for allowing both hot
the solenoid 292, and the solenoid switch 294,
which will allow electric current to how from the
and cold water to ?ow to the mixing valve I"
source conductor I5l through the conductors 206
which will mix the hot and cold water so that
and 298 to energize the clutch solenoid I05. This
tempered water will be supplied to the tub.
will raise the clutch collar 95 and cause the
The second rinsing ,
clutch disc 94 to engage the clutch facing I59 10
When the contact arm I35 reaches the end of
and lift the clutch facing SII oi‘! the brake ring
the contact slides Ill and 2l6, the contact “I
92 so that the tub 64 is released from the brake
will engage another contact slide 228 which will
ring and is clutched to the motor 98 in a direct
connect through the contact slides 2I2, 2I9 and
drive so that it rotates at motor speed along with
I9! to the conductors I95 and I85 to again en
the agitator 44. This will cause the centrifugal
ergize the driving motor 38. This will again op
draining of the basket member Iill largely through
erate the agitator I“ so as to agitate the clothes
the outlet apertures ‘III, as mentioned before,
in tempered rinse water.
when the tub H was described. This continues
for a period of about ?ve minutes in proportion
The final drying period
to the length of the contact slide I93 so that the 20
There
is
a
brief interval provided between the
tub 64 is completely emptied and the clothes
contact slide 229 and the next contact slide 230
dried.
which is also engaged by the slide contact “I
The second hot water charge
and is connected to the contact slide 229. This
After this, the contact arm I35 continues to
again energizes the driving motor 39. Another
25
move and the contact I“ makes engagement
contact slide 232 is provided which is engaged
with the contact I15 while the only other contact
at the same time by a slide contact “2 which is
active is the contact I45. This allows direct cur
rent to ?ow from the contact arm S35 through
connected to the contact Slides 2“ and I9‘! in
order to energize the clutch solenoid Hi5 to re
the conductor Ill and the solenoid I13 to again
close the circuit of the hot water valve I21 to
allow hot water to flow again into the tub 5‘.
At this time. the amount of hot water is con
trolled by the length of the contact slide I15.
When the contact arm I35 reaches the end of
this contact slide Il5, the supply of hot water is
lease the tub 54 from its brake and to clutch the
tub to the driving motor 38. This will operate
the agitator M and the tub N at motor speed
in order‘ to remove the water from the tub N
and dry the clothes.
shut oil by the deenergization of the solenoid oi
the valve I21.
The ?rst rinsing
In Figs. 5 to 8, I have shown a modi?ed sys
Modi?ed form I
tem which includes a reversing motor and a
clutch mechanism operated by the reversing of
At the same time, the contact III again makes 40 the motor to control the spinning of the tub. As
is best shown in Fig. 7, the modi?ed reversing
engagement with a contact slide 2Iil which is
motor and motor housing 30! has the motor shaft
connected to the contact slide I93 and, in turn,
299 provided with a clutch ‘operating pin 305.
is connected to the'solenoid I91 oi the switch
the opposite ends oi’ which extend and ride with
I99 to close the circuit of the motor 99. This
will cause agitation of the clothes in iresh hot 45 in inclined slots 30‘! provided in a modi?ed clutch
collar 309. When the motor operates in one di
water to give the clothes 9, hot water rinse. When
rection, the pin will move into the upper end
at the end of about ?ve minutes, the contact
of the slot and cam the clutch disc 94 down
arm I35 reaches the end of the slide contact 2I9.
wardly so that the clutch plate 58 will have its
the motor 38 is stopped for an interval of about
outer facing 90 resting upon the brake ring 92,
one minute.
The second drying period
After this, the slide contact III again makes
engagement with a contact slide 2I2 which is in
series with the contact slides m and I99 for
again energizing the driving motor 38. At this
time, the contact I42 is in engagement with the
contact slide 2 I4 which is connected in series with
the contact slide I91 to again energize the sole
thereby stopping and preventing rotation of the
tub 6 .
.
When the motor 30I operates in the opposite
direction, the pin 305 will ride to the lower end
of the slots 391, thereby elevating the disc 94
into engagement with the clutch lacing I99,
thereby raising the clutch facing 99 from the
brake ring and clutching the tub to the driving
motor. This will cause the rotation in the reverse
direction of the tub 59 along with the agitator
ll, making it possible to centritugally remove
the water and dry the clothing in the tub. This
movement of the pin 355 in the slots 30‘! takes
place by reason of the inertia oi the clutch disc
The tempered water charge
9‘ which may be weighted at its rim to increase
When the contact arm I35 reaches the end 65 its moment of inertia and the sudden start or
of the contact slides H2 and 2“, the contact
the motor.
a
Ill, after a. brief interval, will make engagement
- The modified automatic control
with the contact slide I'll which closes the cir
cuit oi’ the conductor III to energize the solenoid
A modi?ed form of automatic control is shown
I19 of the switch I19 to energize the solenoid '10 in Fig. 5 for this reversing type motor and clutch
of the hot water valve I21 to open this valve. At
mechanism. This is operated by the knob shown
in Fig. 3 and is fastened to the casing as shown
the same time, however, the contact I“ will
make contact with the contact slide 2I8 which
in Fig. 1. This automatic control is connected
will close the circuit through a conductor 2|.
to the supply conductors III and ill. The sup
which includes a solenoid 220 for closing the 75 ply conductor ill connects to a contact slide III
noid I95 to clutch the tub to the driving motor,
in order to spin the tub and remove the hot
rinse water.
2,411,9e0
.
.
11
l2
The second rinsing
Shortly after this, the contact 32! engages an- >
V
for supplying the tub with washing iluid, means
for agitating the eontentsoi the tub, a two-way
alternative control device for selecting either the
other contact slide 381 which is connected in
supply means or the agitating means, manually
series with the contact slide 315 for causing the
motor "I to operate in the iorward direction so 5 settable means for selectively varying the sum
total time of operation of both of said means, a
as to rotate the agitator 44 at motor speed.
thermal device operable upon the-attainment of
The ?nal drying period
a predetermined temperature for controlling
When the contact 32! reaches the end of the ‘ said alternative device to control the change
contact slide 381, after a short interval, the con 10 from the supply means to the agitating means,
test 324 will engage the contact slide it! which
and means for electrically heating saidthermal
is connected in series with the contact slides "i
device concurrent with the supplying of washing
?uid.
and I59, in order to cause the motor till to oper
ate in the reverse direction, thereby clutching
2. A washing machine including a tub, means '
the tub 64 to the motor lill to expel the water 15 for supplying the tube with washing ?uid, means
and dry the clothes by centriiugal action. The
contact slide 363 is made suiilciently long to
properly dry the clothes.
Summary
- Thus. I have provided awashing machine in
which the agitator and the tub are directly
connected to the driving motor to provide agita
tion and centrifugal drying at motor speed.
Preferably, some form of motor preferably oithe
' induction type' is provided, having a maximum
speed of not over nine hundred R. P. M. For .
the reversing motor 3M, it is desirable that the
for agitating the contents of the tub, manually
settable timing means i'or selectively varying
the’ duration of the agitation, and a thermal
device separate from said settable means for
20 timing said supply means, said thermal device
being operable upon the attainment of a pre
determined temperature, and means for elec
trically heating said thermal device concurrent
with the supplying of washing ?uid.
3. A washing machine including a tub, means
for supplying the tub with washing ?uid includ
ing electrical control means, electrically oper
ated means for agitating the contentsoi the tub,
motor have a high starting torque, so as to better
a two-way alternative electrical supply means
operate the clutch collar at through the me 30 for alternately supplying electric energy to-elther .
dium of the pin SI! and the inclined slots Ill.
the electrical control. means or the electrically
It will be seen that the mechanism is very simple
operated means. said supply means incorporat
as compared to most other machines, and tree
ing a thermal mean's operative upon reaching a
from likelihood of mechanical failure.
predetermined temperature and a means for elec
While the form of embodiment of the inven
trically heating said thermal means coincident
tion as herein disclosed, constitutes a preferred
ally with the iiow of current through the supply
form, it is to be understood that other forms
means for causing it to move from supplying
might be adopted. as may come within the scope
the electrical control means to supplying the
of the claims which follow.
electrically operated means.
'
What is claimed is'as iollows:
1. A washing machine including a tub, means
JOHN B. DYER.
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