US3105375A

US3105375A - Washing machine having means for selecting water temperature, wash speed and spin speed

Info

Publication number: US3105375A
Application number: US703374A
Authority: US
Inventors: Samuel G Eskin; Jr Robert W Couffer
Original assignee: Dole Valve Co
Current assignee: Dole Valve Co
Priority date: 1957-12-17
Filing date: 1957-12-17
Publication date: 1963-10-01
Anticipated expiration: 1980-10-01

Description

Filed Dec. 17,195?

f Oct. '1, 1963 a. EYISKIN ETAL 3,105,375

WASHING MACHINE 'HAVING'MEANS FOR SELECTING WATER TEMPERATURE, WASH SPEED AND SPIN SPEED 4 Sheets-Sheet l g a I\ N t A 3 0 9 Q 2; m E E in 6AM LY EfiN U G. Ry5ERT \M COUFFER JR.

AT TORNEY Oct. 1, 1963 s. G. ESKlN ETAL 75 WASHING MACHINE HAVING MEANS FOR SELECTING WATER TEMPERATURE, WASH SPEED AND spm SPEED Filed Dec. 17, 1957 I 4 Sheets-Sheet 2 s4, 51 as s2 s5 I so as 79 12 5a 55 s 95 5a 52 5 H as 54 44 'V'VVY 42 I354 4| 49 Z4245 40 FIG. 2

INVENTOR5 GAMUELG. E6l lN AT TO RN EY Oct. 1, 1963 s. e. ESKIN ETAL 3,105,375

WASHING MACHINE HAVING MEANS FOR SELECTING WATER TEMPERATURE, WASH SPEED AND SPIN SPEED Filed Dec. 17. 1957 4 Sheets-Sheet 3 FIG; 5

INVENTOR5 GAMUEL a. KIN 2 36811 w. cou FFER .Jrz

ATTORNEY Oct. 1, 1963 Filed Dec. 17, 1957 Ill H2 TIMER s. G WASHING MACHINE Eskm ETAL. 3,105,375

HAVING MEANS FOR SELECTING WATER TEMPERATURE, WASH SPEED AND SPIN SPEEDI'I 4 Sheets-Sheet 4 INVENTOR AMUEL G.E5I IN R Q BERPW- ccu FFER JR.

ATTORN EY United States Patent 3,105,375 WAEHING MACHINE HAVING MEANS FOR SE- LECTING WATER TEMPERATURE, WASH SPEED AND SPIN SPEED Samuel G. Eslrin, (Ihicago, and Robert W. Coufler, In, Gait Park, 111., assignors to The Dole Valve (Zompany, Morton Grove, Ill., a corporation of Illinois Filed Dec. 17, 1957, Ser. No. 703,374 4 Claims. (Cl. 6812) This invention relates to improvements in controls for household automatic clothes washing machines and more particularly relates to control means for preselecting the temperature of the water to be delivered to a machine through a mixing valve for wash and rinse operations and for preselecting the speed of wash and spin operations performed by the machine.

Early automatic clothes washing machines had means for selecting the temperature of the water for washing, but the temperature for rinsing and the speed of wash and spin operations were not adjustable and not suitable for certain fabrics. Improved machines now have means for selecting the temperature of the water for both washing and rinsing operations and for selecting the speed of wash and spin operations, it being possible to select any combination of Warm to hot wash water temperature, cold to warm rinse Water temperature, fast or slow wash speed, and fast or slow spin speed, so that now any type of fabric may be washed automatically just as well as by hand. Prior to our invention, however, the above four selections required checking and possibly resetting four different controls on the machine. In addition, the timer and possibly controls for other things such as automatic dispensers had to be set. With so many controls to be set, it is readily apparent that a housewife might become confused. Fewer controls to be set would simplify operation of the machine and also save time.

Therefore, a principal object of our invention is to reduce the number of separate controls required to be set on an automatic clothes washing machine in the selection of wash water temperature, rinse Water temperature, wash speed, and spin speed.

Another object of our invention is to provide a combination control device for use in an automatic clothes washing machine wherein selection of the temperature of water to be delivered to the machine automatically also selects the speed of various operations to be performed by the machine.

A further object of our invention is to provide a combination adjustable hot and cold water mixing valve and electric switch, wherein adjustment of the mixing valve to select the temperature of mixed water to be delivered thereby also determines the operative position of the electric switch.

Still another object of our invention :is to provide a combination control device including an adjustable hot and cold water mixing valve having two separate adjusting means for preselecting the temperature of mixed water to be delivered thereby during successive operations and two electric switches, wherein selection of the temperature of mixed water to be delivered by the valve for the first operation also determines the operative position of one of said switches, and selection of the tem perature of mixed water to be delivered by the valve for the second operation also determines the operative position of the other of said switches.

Another object of our invention is to provide for an automatic clothes washing machine a control device including an. adjustable mixing valve having means for preselecting the temperature of water to be delivered by the valve for a washing operation, means for preselecting the temperature of water to be delivered by the valve for a rinsing operation and means for automatically shifting from the preselected wash water temperature to the preselected rinse water temperature during the operation of the machine, wherein selection of the wash water temperature also determines the wash speed, such as the speed of an agitator, and wherein selection of the rinse water temperature also determines the spin speed.

A further object of our invention is to provide for an automatic clothes washing machine a control device including an adjustable mixing valve having means for preselecting the temperature of water to be delivered by the valve for a washing operation, means dependent on the selection of Wash water temperature for determining the temperature of water to be delivered by the valve for a rinsing operation, and means for automatically shifting from the preselected wash water temperature to the dependent rinse water temperature during the operation of the machine, wherein selection of the wash water temperature also determines the wash speed and the spin speed, as well as the rinse water temperature.

Another object of our invention is to provide in a con trol system for an automatic clothes Washing machine means for preselecting the temperature of the water to be delivered to the machine through a mixing valve for wash and rinse operations and for preselecting the speed of wash and spin operations which are simpler and more economical to manufacture than such means in former control systems.

These and other objects of the invention will appear from time to time as the following specification proceeds and with reference to the accompanying drawings wherein: j

FIGURE 1 is a view in side elevation, partlyin section, of a combination control device constructed in accordance with our invention;

FIGURE 2 is a vertical sectional view tion line IIII in FIGURE 1;

FIGURE 3 is a view similar to FIGURE 2, but illustrating another embodiment of our invention;

taken along sec- FIGURE 4 is an electricalcircuit diagram for the embodiment of our invention illustrated in FIGURE 2; and FIGURE 5 is an electrical circuit diagram for the em bodiment of our invention illustrated in FIGURE 3.

In the embodiment of the invention illustrated in FIG- URES 1 and 2 of the drawings, the device is shown as comprising a mixing valve body 10, having hot and

cold water inlets

11 and 12, respectively, leading throughsui-table passageways (not shown) into a metering chamber 13, having a central aligned mixing chamber 14 in direct communication with one end thereof. The hot water thermoplastic material. Brass and nylon are satisfactory materials.

The

inlets

11 and 12 are shown in FIGURE 1 as being provided with screens to strain out any large particles of matter, and may also be provided with check valves, as shown and described in US. Patent No. 2,620,l-33.

The valve body has a passageway 15, communicating through a port (not shown) with mixing chamber 14, leading to an annular passageway 16 opening to one side of the valve body and closed by a solenoid controlled pressure operated diaphragm valve 17. When the diaphragm valve 17 is open, water from the mixing chamber 14 will fiow through passageways 15 and 16 radially inwardly across the inner surface of diaphragm valve 17 to a passageway 18 leading to an outlet '19 from the valve body 10.

The valve 17 is a well known form of pressure operated solenoid controlled diaphragm valve in' which an armature 20 of a solenoid 21 is slidably guided within a magnet coil 22 of the solenoid and is engaged with a central orifice 23 leading through the diaphragm valve by a spring 24. The diaphragm valve has a bleed passage (not shown) in the thinner portion thereof leading therethroug-h to pass water from one side of the diaphragm to the other and create a pressure differential on opposite sides of the diaphragmwhen the orifice 23 is closed by engagement with the armature 20, to maintain the valve closed by the pressure of the water acting on the outer face thereof. Upon energization of the magnet coil 22', the armature 20 will move out of engagement with the central orifice 23, relieving pressure from the outer side of the diaphragm valve 17 to effect opening of said diaphragm valve by the pressure of fluid on the inner side thereof.

The outlet -19 is shown in FIGURE 2 as being in the dorm of a metal fitting 25 sealed to the opposite wall of the valve body from the

inlets

11 and 12 and retained in sealing engagement with the valve body by a yoke 26 engaging said fitting and secured to the valve body as by self-tapping screws 27 extending through said yoke and threaded within the valve body 1%.

' The fitting 2-5 is shown as having a generally tubular seating and passageway member 28 extending therealong, the inner wall of which forms the outlet 19 from the valve. The inner face of the passageway member 28 is shown as forming a seat for a resilient flow control device 29 for maintaining a substantially constant rate of flow through the outlet 19 regardless of variations in inlet pressure of fluid entering the valve body through the

inlets

11 and 12, on principles clearly shown and described in Patent No. 2,454,929, which issued to Leslie A. Kempton on November 30', 1948, and forms no part of the present invention so not herein shown or described further.

A hollow piston valve 3 0 is provided to meter hot and cold water from the metering chamber 13 into the mixing chamber 14. The piston valve 3% is guided within a generally cylindrical insert 31 extending along the wall of the metering chamber 13 and apertured at its periphery midway of its length to accommodate the fiow of cold water thereinto from the cold water inlet 12. The insert 31 is sealed to the Wall of the chamber 13 by

spaced seals

32 and 33 and is retained in engagement with shouldered portions 34 extending inwardly from the wall of the metering chamber by a retaining ring 35, which may be a snap-ring snapped into the wall of the chamber 13 in engagement with the outer end of insert 31. The insert 31 is provided with an inwardly extending flanged portion 36 extending from the inner end thereof and sealed to the wall of the piston valve 30, as by a sealing member 37.

The insert 31 is also provided with a flange 38 extending inwardly therefrom adjacent the outer end thereof and forming a seat for an annular end valve face 39 of the piston valve 30. The opposite end of the piston a ivalve 36 is seated against an annular seat 4% shown as being formed integrally with an end wall 41 of the metering chamber 13.

A spring 42 seated at one end in the end wall 41 within the annular seat 41} and at its opposite end on a stirrup 43 for a thermal'element 44 is provided to bias the piston valve 30 toward the face of the flange 33 and block the flow of cold water into the mixing chamber 14 and accommodate the flow of hot water thereinto and also to retract an extensible power member 45 of the thermal element 44 upon cooling of said thermal element.

The thermal element 44 is shown as being of the so called power type of thermal element wherein a fusible thermally expansible material contained within a casting 46 of the thermal element extends the power member or piston 45 from a cylinder 47 of the thermal element as the temperature of water in the mixing chamber 14 approaches the fusion point of the thermally expansible material, as shown and described in Patent No. 2,3 68,181 which issued to Sergius Vernet on January 30, 1945, and forms no part of our present invention so not herein shown or described further.

The stirrup 4-3 against which the power member 45 of the thermal element 44- acts is maintained in position within the piston valve 30 by an overtravel spring 4-55 seated at one end on an annular rib 49 extending inwardly from the wall of the piston valve 3% and seated at its opposite end on the stirrup 4-3 and maintaining said stirrup in engagement with a snap-ring 5t engaging an annular rib 51 extending inwardly from the wall of the piston valve 3t? adjacent the valve face 39 thereof.

The means for adjusting the operative position of the thermal element 44- to adjust the controlled temperature of mixed water in the mixing chamber 14. includes a shaft or pin 52 extending from a spider 53 encircling the casing 46 of the thermal element and engaging a clamping ring 54 of said thermal element.

The pin 52 extends through and is mounted for sliding movement along a sealing plate 55 carried in an end plate 56 suitably secured and sealed to the valve body 10 to close mixing chamber 14. A sealing ring 57 recessed within the sealing plate 55 has sealing engagement with the pin 52 and is retained in sealing engagement therewith as by a retaining ring 58.

The heating coil 73 includes a pair of

terminals

82 and 33 which are respectively connected to a pair of termi nals 84 and '35 extending through cap member 78. The terminal 82 is connected directly to the terminal 84, while the terminal 83 is connected to terminal 85 through a normally closed switch 86 mounted inside cap member 78 and having a switch arm '87 extending therefromcver the edge of heating coil 73 to be engaged thereby and open the contacts of switch 86 to deenergize heating coil 73 upon a predetermined travel of thermal element '72 against spring 89* after legs 68 have engaged cam surface 67.

An extension of end plate 56 serves as a mounting for a pair of two position single polo double throw switches 88 and 89 suitably fastened thereto as by rivets 9i and having

switch arms

91 and 92 biased respectively into engagement with cam surfaces 93 and 94 formed on the underside of

cams

63 and 66 at their peripheries. The switch arm 91 engages either contact 95 or contact 96 of switch 88, and the switch arm 92 engages either contact 97 or contact 93 of switch 89. While shown as leaf spring switches for ease of illustration and explanation, it is understood that preferably switches 83 and-89 should be of a snap acting type.

FIGURE 4'is a schematic wiring diagram illustrating one method in which the embodiment of our invention shown in FIGURES 1 and 2 may be used. A timer 99 for a washing machine is connected to a source of electrical power through power lines 10%} and 191.

A motor for the washing machine is generally indicated at 10 As an example, the motor 194 may be a two-speed motor and may alternately drive either the agitator of a washing machine for Washing and agitated rinsing of clothes, or a perforated inner tub of a washing machine, for spray rinsing and spin drying of the clothes, all according to the operation called for by the timer at a particular time. The high speed windings for the motor 104- are indicated at 105, and the low speed windings are indicated at 1116. It should be understood that provision of different speeds may be made by shifting of gears, clutches, belts, etc., rather than by a two-speed motor.

A line 102 from the timer is connected to the switch 88, which controls the wash speed of the machine, or the speed at which the agitator is driven during washing and agitated rinse operations. The contact 95 of which 88 is connected to low speed windings 106 of motor 1%, and contact 96 of switch 88 is connected to high speed windings 105 of motor 104. A line 163 from the timer is connected to solenoid 21 for energizing the coil 22 and opening valve 17 to admit water at the selected wash temperature to the machine for the washing operation.

For a washing operation, the position of pin 52, and hence the operative position of thermal element 44 determining the temperature of mixed water to be delivered to the washing machine for the washing operation, is determined by the position of a cam follower 59 guided in slots 69 of a flanged cylindrical casing member 61 having its flanged end secured to end plate 56 in any suitable manner.

The follower 59 has oppositely projecting legs 62 extending through and beyond the slots 66 in casing member 61. The legs 62 are normally in engagement with a cam surface 64 on the underside of a wash cam 63 to determine the operative position of thermal element 44 and the temperature of mixed water delivered to the washing machine for the Washing operation. The wash cam 63 rotatably engages the outer surface of casing member 61 and is retained to said casing member as by a snap-ring 65 engaging the opposite face of said wash cam from the cam surface 64 thereof and separating said Wash cam from a rinse cam 66.

The rinse cam 66 is also rotatably mounted on the casing member 61 and has a cam surface 67 on the upper side thereof engaged by oppositely projecting legs 68 of a cam follower 69 to determine, through abutting cam follower 59 and pin 52, the operative position of thermal element 44 and the temperature of mixed water delivered to the washing machine for a rinsing operation.

The legs 63 extend through slots 70 in casing member 61 and are normally out of engagement with cam surface 67, but for the rinsing operation they are moved into engagement with cam surface 67 by an extensible power member 71 of a thermal element 72 mounted in casing member 61 and similar to thermal element 44 but having an electrical heating coil 73 mounted on the casing thereof.

The thermal element 72 is provided with a spider 74 mounted on a clamping ring 75 thereof and having legs 76 extending through slots 77 in casing member 61. A hollow cap member 78 surrounds the upper portion of easing member 61 and is secured thereto through a ring 79. An overtravel safety spring 86 for thermal element 72 surrounds casing member 61 and seats at one end on a shoulder 81 of cap member 78 and at the other end on legs 76 of spider 74.

.A line 107 from the timer is connected to the switch 89, which controls the spin speed of the machine, or the speed at which a perforated inner tub is spun to wring water out of the clothes. The contact 97 of switch 89 is connected to low speed windings 106 of motor 104, and contact 98 of switch 89 is connected to high speed windings 165 of motor 104. A line 108 from the timer is connected to solenoid 21 for energizing the coil 22 and opening valve 17 to admit water at the selected rinse temperature to the machine for the rinsing operation.

A line 109 from the timer is connected to heating coil 73 for energizing the heating coil to shift the thermal element 44 and change from the wash temperature setting thereof determined by cam 63 to the rinse temperature setting thereof determined by cam 66.

' A line 110 from the timer is connected to a solenoid coil 111 for shifting the operative driving connection of motor 104 from the agitator of the machine to the perforated tub thereof for spinning water out of the clothes. It will be understood that a drain valve may be opened and a pump energized at the time of the spinning operation.

For ease of illustration, return connections have. not been shown, but it is understood that lines 112, 1 13, 1'14, 115, and 116 are return lines connected to the return side of

power lines

100 and 101.

In the embodiment of the invention illustrated in FIG- URE 3 of the drawings, explanation may most simply be made by comparison with the device of FIGURES 1 and 2. With the exceptions set forth below, the parts of the device of FIGURE 3 are identical with the .parts of the device of FIGURES 1 and 2, and for this reason the parts of the device of FIGURE 3 are not separately described,

and certain identical parts are numbered with the same numbers as in FIGURE 2.

The device of FIGURE 3 has been made non-thermostatic by replacing pin 52, spider 53, and thermal element 44 of the device of FIGURE 2 with a pin 52a extending from wash cam follower 59 all the way to stirrup 43.

In the device of FIGURE 3, the

switches

88 and 89 of FIGURE 2 have been replaced by a single switch 88a, and rinse cam 66 of FIGURE 2 with switch actuating cam surface '94 has been replaced by cam 66a having no lower peripheral cam surface and keyed to Wash cam 63 by a pin 117.

FIGURE 5 is a schematic wiring diagram for the device of FIGURE 3, and is identical with FIGURE 4 except for the removal of switch 89 and the connections thereto, it being understood that the switch 88a will control both the wash speed and the spin speed of the machine. However, in this case the wash speed and spin speed are not independent, both being either high or low according to whether switch arm 91a is in engagement with contact 96a connected to high speed windings 1115 of motor 104 or contact a connected to low speed windings 106 of motor 164.

In the operation of the device of FIGURE 2, the wash cam 63 is set to the desired temperature of water to be delivered to the machine for the washing operation. At this time, cam follower 59 is held in engagement with cam surface 64 by spring 42 acting through stirrup 43, thermal element 44, and pin 52, and the cam surface 64 thus determines the operative position of the thermal element 44. At the same time, cam surface 93 determines the operative position of switch arm 91 according to the selected temperature of the wash water. Normally switch arm 91 will engage contact 95 to effect a slow agitatorv speed for low wash temperatures and contact 96 to effect a high agitator speed for high wash temperatures, but cam surface 93 may be designed to give any desired correlation between agitator or Wash speed and wash temperature. Similarly, the rinse cam 66 is set to the desired temperature of water to be delivered to the machine for the rinsing operation, and cam surface 94 determines the operative position of switch arm 92 according to the selected temperature of the rinse water. Normally switch arm 92 will engage contact 97 to effect a slow spin speed for low rinse temperatures and contact 98 to effect a high speed for high rinse temperatures, but cam surface 574 may be designed to give any desired correlation between spin speed and rinse temperature.

After the earns 63 and 66 have been adjusted to the desired settings, the timer is turned to start the machine. Solenoid 21 is energized by the timer through line 103 to open valve '17 and admit water at the selected temperature to the machine for the washing operation. If the mixed Water passing through mixing chamber 14 is hotter 7 switch 88a.

than the selected temperature, the thermal element 44 Will be heated and piston 45 thereof will be extended to move piston valve 30 closer to seat 46 and away from flange 38 to reduce the amount of hot water available from inlet 11 and increase the amount of cold water available from inlet 12. Ifthe mixed water passing through the mixing chamber 14 is colder than the selected temperature, the thermal element 44 will be cooled and spring 42 will move piston valve 3% away from seat 43 and toward flange 38 to increase the amount of hot water available from inlet 11 and reduce the amount of cold water available from inlet 12. After a predetermined amount of water has been admitted to the machine, solenoid 21 is deenergized and washing takes place at the wash speed determined by the wash temperature setting. After the washing operation, solenoid coils such as 111 are energized to open a drain valve, start a pump, and shift the driving connection of motor 104 from the agitator to perforated inner tub to spin the wash water from the clothes at the speed determined by the rinse temperature setting.

The Washing machine and its particular sequence of operations are no part of the present invention, and are not herein shown or described in detail, but by way of example, suffice it to say that after the washing operation and discarding of the Wash water, one or several rinsing operations will occur. At this time heating coil '73 will be energized to extend piston 71 from thermal element 72 and move wash cam follower 59 away from Wash cam 63 and move rinse cam follower 69 into engagement with rinse cam 66 to change the operative position of thermal element 44, so that when rinse water is adrnitted to the machine by energization of solenoid 21 through line 108, the selected temperature of rinse water will be attained.

After cam follower 69 engages rinse cam 66, continued heating of thermal element 72 by heating coil 73 will cause it to back up against the spring 8! until it opens switch 86. Subsequent cooling permits spring 8% to return element 72 and again close switch 86. In this'manner, overheating of element 72 is prevented.

After the rinsing operation or operations, the rinse Water is spun from the clothes at the speed determined by the rinse temperature setting.

The device of FIGURE 3 will operate in a similar manner, except in this case only one setting need be made. The Wash cam 63 is set to the desired wash water temperature, and at the same time the rinse water temperature will be determined by rinse cam 66a keyed thereto and the wash and spin speeds will be determined by The temperature of the mixed water for Washing and rinsing operations will vary with the temperature of the hot and cold

water entering inlets

11 and 12, since in FIGURE 3 the position of piston valve 30 is determined by pin 52a and no thermostatic compensation is provided.

It will be understood that various combinations of the devices of FIGURES 2 and 3 are possible. For example, the

independent cams

63 and 66 and two switches 88 and $9 of FIGURE 2 might be combined with the non-thermostatic valve of FIGURE 3, or the thermostatic valve of FIGURE 2 might be combined with the

dependent cams

63 and 66a and the single switch 88:: of FIGURE 3. In addition, a single switch such as 88min FIGURE 3 might be used with either a thermostatic or a non-thermostatic valve, with

cams

63 and 66a of FIGURE 3 not keyed together by pin 117. In such a case, the rinse temperature would not be determined by the wash temerature, but the spin speed would be determined by the wash speed.

Various other modifications might be made without departing from the spirit and scope of the novel concepts of our invention. In the following claims, wash speed is intended to mean the speed of the washing action of any suitable mechanism, such as the speed of oscillation of an agitator in an agitator type machine, the speed of rotation of a tub in a tumbling type machine, etc. Spin speed is intended to mean the speed of rotation of a tub to extract water from clothes by centrifugal force.

.We claim as our invention:

l. In a valve and switch assembly for delivering a regulated quantityof fluid at predetermined temperatures and supplying electrical energy to operate a device at different speeds in accordance with a selected temperature setting, a valve body having a chamber therein, hot and cold water inlets leading into said chamber, an outlet leading from said chamber, a shut-off valve associated with said outlet for controlling the flow of fluid therethrough, valve means in said chamber for metering the flow of hot and cold water thereinto from said inlets in accordance with the position thereof when said shut-oil valve is open, a thermally responsive element in said chamber for operating said valve means and controlling the temperature of mixed water flowing through said outlet, manually adjustable means on the outside of, said valve body having a first portion operatively associated with said thermally responsive element for adjusting the operative effect of said element on said valve means and preselecting the control temperature of mixed water to be furnished through said outlet for one operation and having a second portion independent of said first portion for adjusting the operative effect of said thermally responsive element on said valve means and determining the control temperature of water to be furnished through said outlet for a second position, means for shifting the operative temperature setting of said thermally responsive element from a temperature determined by said first portion of said adjustable means to a temperature determined by said second portion of said adjustable means, and switch means associated with said first and second portions of said adjustable means automatically selecting the speed of operation of the device to be operated in accordance with selected tempe ature settings for each portion of said adjustable means.

2. In a valve and switch assembly for delivering a regulated quantity of fluid at preselected temperatures and supplying electric energy to operate a device at different speeds in accordance with a preselected temperature setting, a valve body having a chamber therein, hot and cold water inlets leading into said chamber, an outlet leading from said chamber, a shut-off valve associated with said outlet for controlling the flow of fluid therethrough, valve means in said chamber for metering the flow of hot and cold water thereinto from said inlets in accordance with said position of said valve means when said shut-off valve is open, a thermally responsive element in said chamber for operating said valve means and controlling the temperature of mixed water flowing through said outlet, two temperature selector cams on the outside of said valve body operable to preselect the temperature of the fluid for different cyclic operations, means for shifting the operative temperature setting of said thermally responsive element from a temperature,

determined by said first cam to a temperature determined by said second cam, and speed control switch means associated with each of said cams for selecting difierent operative speeds of the device to be operated in accordance with the preselected temperature settings of said cams.

3. A valve and switch assembly in accordance with claim 2, wherein the temperature selector cams are annular and have inner cam surfaces preselectingthe temperature of the fluid delivered through said outlet for ditferent cyclic operations and wherein the cams have outer cam surfaces having operative engagement with said switch means for selecting an operative speed in accordance with preselected temperatures of fluid selected by said cams.

4. In a washing machine, a variable speed motor, means operatively connected to said motor and driven thereby for providing at least one of a plurality of wash speeds and a plurality of spin speeds, at variable mixing valve for controlling the supply of hot and cold water to said machine and including adjustable means movable manually to a plurality of positions to vary the water temperature by varying the proportion of hot and cold Water flowing through the valve, means for controlling the operation of :said motor and including switch means for determining the speed of said motor, said switch means being operatively connected to said adjustable means and operable thereby.

References Cited in the file of this patent UNITED STATES PATENTS Bariffi Aug 11, Edwards Aug. 19, Edwards Aug. 24, Kempton Nov. 29, Chace et a1. Apr. 10, Von Wagenheim Nov. 3, Conlee July 1,

Claims

4. IN A WASHING MACHINE, A VARIABLE SPEED MOTOR, MEANS OPERATIVELY CONNECTED TO SAID MOTOR AND DRIVEN THEREBY FOR PROVIDING AT LEAST ONE OF A PLURALITY OF WASH SPEEDS AND A PLURALITY OF SPIN SPEEDS, A VARIABLE MIXING VALVE FOR CONTROLLING THE SUPPLY OF HOT AND COLD WATER TO SAID MACHINE AND INCLUDING ADJUSTABLE MEANS MOVABLE MANUALLY TO A PLURALITY OF POSITIONS TO VARY THE WATER TEMPERATURE BY VARYING THE PROPORTION OF HOT AND COLD WATER FLOWING THROUGH THE VALVE, MEANS FOR CONTROLLING THE OPERATION OF SAID MOTOR AND INCLUDING SWITCH MEANS FOR DETERMINING THE SPEED OF SAID MOTOR, SAID SWITCH MEANS BEING OPERATIVELY CONNECTED TO SAID ADJUSTABLE MEANS AND OPERABLE THEREBY.