US3220226A

US3220226A - Control circuits for automatic clothes washing machines

Info

Publication number: US3220226A
Application number: US330101A
Authority: US
Inventors: Frank D Low
Original assignee: General Electric Co
Current assignee: General Electric Co
Priority date: 1963-12-12
Filing date: 1963-12-12
Publication date: 1965-11-30
Anticipated expiration: 1982-11-30

Description

F. D. LOW

Nov. 30, 1965 CONTROL CIRCUITS FOR AUTOMATIC CLOTHES WASHING MACHINES 6 Sheets-Sheet 1 Filed Dec. 12, 1963 Qzoumm INVENTOR. Fran/r .0 Low way: 04 2.,

u g A1775 BY W EwommGo 28m Nov. 30, 1965 F. D. LOW 3,220,226

CONTROL CIRCUITS FOR AUTOMATIC CLOTHES WASHING MACHINES Filed D60. 12, 1963 6 Sheets-Sheet 2 PROGRAM CONTROLLER g3 GEAR BOX GEAR BOX 57 INVENTOR Fran/r 0 Law Y 1 WASH NOV. 30, 1965 4 ow 3,226,226

CONTROL CIRCUITS FOR AUTOMATIC CLOTHES WASHING MACHINES Filed Dec. 12, 1963 v 6 Sheets-Sheet 5 v d 8 N L1- o 0 Lu 8 O v-l 5 8 -2 0 g g"\) if: 28 Q5 1 I: m

5 227 3, J Tb r I 213 O 1' E22 a 2l| CE; 28 HEP- L 225\ SPIN CONTROL SW I70 TEMP sw I20 A 3 RINSES 6 Sheets-Sheet 4 om om .Ewommfia o mm om oo hm 40m #0:

Nov. 30, 1965 F. D. LOW

CONTROL CIRCUITS FOR AUTOMATIC CLOTHES WASHING MACHINES Filed Dec. 12, 1963 59:1 WM 2 9 2 4 g $525 .2 A 29 35 .A $525 N 2 9 fi j $525 9 22 $53 k b\ 3 5 8 5 #Ehzoo m2; 405200 E Nov. 30, 1965 F. D. LOW

CONTROL CIRCUITS FOR AUTOMATIC CLOTHES WASHING MACHINES Filed Dec. 12, 1963 6 Sheets-Sheet 5 FIG. 8

GEAR BOX GEAR BOX

4 POLE START DRIVE MOTOR 40 Program amroller 5O United States Patent 3,229,226 CONTROL CIRCUITS FOR AUTOMATIC CLOTHES WASHENG MACHINES Frank D. Low, La Grange Park, 111., assignor to General Electric Company, a corporation of New York Filed Dec. 12, 1963, Ser. No. 330,101 25 Claims. (Cl. 6812) The present invention relates to control circuits for automatic clothes washing machines; and it is a general object of the invention to provide in a clothes washing machine including a tub adapted to receive clothes to be washed, first mechanism operative to introduce water into the tub, second mechanism operative to agitate the clothes in the water in the tub, and third mechanism operative to expel the water from the tub and from the clothes therein, the combination comprising an improved program controller operative in accordance with any one of a plurality of preset programs through a fixed cycle selectively to govern operation of the three mechanisms mentioned to produce a corresponding operational program in the machine, and an improved manually operable arrangement for selectively presetting the desired programs.

Another object of the invention is to provide a control circuit for an automatic clothes washing machine, and of the character described, wherein the improved program controller includes an operating shaft that is mounted both for axial movements between an axial stop position and an axial start position and for rotary movement in a given direction from a rotary start position through a fixed number of rotary control positions and thence back into its rotary start position, manually operable means for moving the operating shaft from its axial stop position into its axial start position, motor means responsive to movement of the operating shaft into its axial start position for rotating the operating shaft in the given direction from its rotary start position through its rotary control positions and back into its rotary off position, and reset mechanism responsive to the return of the operating shaft back into its rotary off position for moving the same from its axial start position back into its axial stop position, wherein the motor means mentioned includes a timer motor for rotating the operating shaft at a low fixed time rate and a position advance motor for rotating the operating shaft at a high rate, the high rate mentioned being substantially higher than the low rate mentioned.

A further object of the invention is to provide a control circuit for an automatic clothes washing machine, and of the character described, wherein the improved manually operable arrangement for selectively presetting the desired programs selectively presets the portions of the fixed cycle of the program controller in which the operating shaft thereof is rotated by the timer motor and by the position advance motor, so that the total time interval of the fixed cycle of the program controller matches that of the preset desired program.

A further object of the invention is to provide a control circuit for an automatic clothes washing machine, and of the character described, wherein the improved manually operable arrangement for selectively presetting the desired program accommodates ready inclusion and exclusion of given cycles in the desired program.

Further features of the invention pertain to the particular arrangement of the elements of the electric circuit for the clothes washing machine, whereby the above-outlined and additional operating features thereof are attained.

3,22%,226 Patented Nov. 30, 1965 The invention, both as to its organization and method of operation, together with further objects and advantages thereof, will best be understood by reference to the following specification, taken in connection with the accompanying drawings, in which: 7

FIGURE 1 is a combined schematic illustration and skeleton front view of an automatic clothes washing machine incorporating an electric control circuit embodying the present invention;

FIG. 2 is a front view of the manually operable dial forming a part of the program controller that is incorporated in the electric control circuit of the machine shown in FIG. 1;

FIG. 3 is an enlarged lateral sectional view of the inner end of the drive shaft forming a part of the program controller mentioned;

FIG. 4 is an enlarged fragmentary side elevational view of the inner end of the drive shaft, as shown in FIG. 3;

FIG. 5 is a diagrammatic illustration of the program controller embodying the present invention;

FIGS. 6, 7 and 8, taken together and arranged in sequence from left to right, are a diagram of the electric control circuit embodying the present invention and incorporated in the machine shown in FIG. 1; and

FIG. 9 is a time-sequence control chart of the control cams carried by the drive shaft of the program controller incorporated in the electric control circuit.

Referring now to FIG. 1 of the drawings, the clothes washing machine 10 there illustrated is of the spin-tub type and of the general construction and arrangement of that disclosed in US. Patent No. 2,639,618, granted on May 26, 1953 to Jacob W. McNairy. More particularly, the machine 10 comprises a substantially square supporting base 11 carrying wall structure defining an upstanding casing 12 including a substantially horizontally disposed top wall 13 having a top opening therein provided with a cooperating top door 14 arranged for movements between open and closed positions with respect thereto. Housed within the casing 12 is an upstanding drain tub 15 that is suitably supported upon the base 11 and provided with an open top that is sealed against the underside of the top wall 13 in surrounding relation with respect to the top opening therein. A unitary mechanism 16 is arranged in upstanding position in the lower portion of the casing 12 and suitably supported upon the base 11 by structure indicated at 17. The mechanism 16 includes a casing 18 that is arranged in an opening provided in the bottom wall of the drain tub 15 and sealed in place, whereby the lower portion of the casing 18 is disposed below the bottom wall of the drain tub 15 and the upper portion of the casing 18 is disposed above the bottom wall of the drain tub 15. The casing 18 houses in the lower portion thereof an electric drive motor 46} of the two-speed reversible-rotor type that is also of the 4-pole, 6-pole, split-phase, induction type, as described more fully hereinafter; the rotor of which drive motor 40 is operatively connected to a water pump, not shown, that is also housed within the casing 18. In the arrangement the pump mentioned is provided with an inlet to which there is connected an inlet conduit 15a communicating with the bottom of the drain tub 15, and also an outlet to which there is connected an outlet conduit 15b extending to drain plumbing, not shown. In the arrangement, rotation of the rotor of the drive motor 40 in at least the reverse direction thereof operates the pump mentioned, so that any water in the drain tub 15 is pumped therefrom to the drain plumbing via the conduits 15a and 15b in an obvious manner.

Also, the unitary mechanism 16 comprises an outer rotatable element 19 arranged adjacent to the upper end of the casing 18 and disposed exteriorly thereof and positioned in the lower portion of the drain tub 15; which rotatable element 19 carries an upstanding spin tub 20 that is of conventional construction provided with a substantially annular wall that is upwardly and outwardly flared and having an open top disposed somewhat below the top opening provided in the top wall 13 and an alignment therewith, thereby to accommodate ready placement and removal of the clothes with respect to the spin tub 20 through the top opening mentioned, when the top door 14 occupies its open position. Further, the mechanism 16 comprises an inner oscillatable element 21 projecting through the extreme upper end of the rotatable element 19 and carrying an upstanding agitator 22 arranged substantially centrally within the spin tub 20. Moreover, the upper open end of the spin tub 29 carries the usual balance ring 23 through which an annular array of openings 23a are arranged for the centrifugal discharge of the water therethrough from the spin tub 20 into the drain tub 15.

Finally, the unitary mechanism 16 comprises operative mechanism for selectively interconnecting the rotor of the drive motor respectively to the agitator 22 and to the spin tub 20. In the arrangement, when the rotor of the drive motor 40 is rotated in the forward direction, the agitator 22 is oscillated thereby, and When the rotor of the drive motor 40 is rotated in the reverse direction, the spin tub 20 is rotated thereby. Of course, oscillation of the agitator 22 effects a Washing action upon the clothes suspended in the wash water contained in the spin tub 20, while rotation of the spin tub 20 effects a waterextraction action upon the clothes contained in the spin tub 20. Specifically, rotation of the spin tub 20 causes the wash water contained therein to be flung therefrom by centrifugal force and then causes water absorbed by the clothes to be extracted therefrom by centrifugal action and flung from the spin tub 20. The water flung from the spin tub 20 is caught by the drain tub 15, whereby it is pumped to the drain plumbing, not shown, by the operating pump previously mentioned that is housed within the casing 18 of the mechanism 16. Thus, the washing and water-extracting actions may be selectively effected upon the clothes contained in the spin tub 20 by selectively controlling the drive motor 40 in order to cause rotation of the rotor thereof in the respective forward and reverse directions, as required.

Further, the machine comprises a water supply system indicated schematically as including a hot water supply pipe 24 and a cold water supply pipe 25, as well as a delivery tube 26 directly communicating with the open top of the spin tub 20. Also, a valve 27 is arranged in the hot water supply pipe 24 and a valve 28 is arranged in the cold water supply pipe 25. The

valves

27 and 28 are of the solenoid-operated type, the solenoids thereof being respectively indicated at 27a and 28a; and the

valves

27 and 28 are biased into their closed positions. When the solenoid 27a is energized, the valve 27 is operated into its open position so that hot water is supplied from the hot water supply pipe 24 via the tube 26 into the spin tub 20; and when the solenoid 28a is energized, the valve 28 is operated into its open position so that cold water is supplied from the cold water supply pipe 25 via the tube 26 into the spin tub 20. Of course, the conjoint operations of the

valves

27 and 28 into their open positions bring about the supply of warm water via the tube 26 into the spin tub 2.0, as a consequence of the mixing of the hot water from the hot water supply pipe 24 and the cold water from the cold water supply pipe 25.

Further, the machine 10 comprises a detergent dispenser 30 and a bleach dispenser 35. The detergent dispenser 30 is of the solenoid-operated type, the solenoid of which is indicated at 30a, and is provided with a delivery tube 31 directly communicating with the open top of the spin tub 21). Likewise, the bleach dispenser 35 is of the solenoid-operated type, the solenoid of which is indicated at 35a, and is provided with a delivery tube 36 directly communicating with the open top of the spin tub 20. The dispenser is adapted to contain a suitable liquid detergent and is operative in response to energization-deenergization of the solenoid 30a to effect the delivery of a measured volume or charge of the liquid detergent therefrom via the tube 31 into the spin tub 2t). Likewise, the dispenser is adapted to contain a suitable liquid bleach and is operative in response to energization-deenergization of the solenoid 35a to effect the delivery of a measured volume or charge of the liquid bleach therefrom via the tube 36 into the spin tub 20.

In the machine 10, the

valves

27 and 28, as well as the dispensers 3t) and 35, are suitably housed in the casing 12; and preferably, the

dispensers

30 and 35 are provided with respective fill conduits, not shown, that are accessible through the top opening provided in the top wall 13, when the top door 14 occupies its open position, so as to accommodate the ready filling thereof with the required liquids mentioned. Of course, it will be understood that in FIG. 1, the showings of the water supply system and the

dispensers

30 and 35 are entirely diagrammatic and that actually these elements of the machine 10 are housed within the casing 12, as previously noted.

Referring to FIG. 8, it will be observed that the drive motor 40 of the 4-pole, 6-pole, split-phase, induction type includes a reversible rotor 41 and a cooperating frame carrying a 4-pole run winding 42, a 6-pole run winding 43 and a 4-pole start winding 44. The rotor 41 is carried by an operating shaft 45 to which there is connected a speed-responsive device 46 of the fly-ball governor type that includes a movable shaft 47 carrying two

contact bridging members

48 and 49. Each of the

contact bridging members

48 and 49 is provided with both front and rear contact sets governed thereby.

When the 4-pole run winding 42 is energized with forward polarity, the rotor 44 runs in the forward direction at its high speed of approximately 1725 r.p.m. effecting normal oscillation of the agitator 22 at a rate of about 64 cycles per minute that is suitable for Washing normal fabrics; and when the 6-pole run winding 43 is energized with forward polarity, the rotor 44 runs in the forward direction at its low speed of approximately 1140 r.p.m. effecting gentle oscillation of the agitator 22 at a rate of about 45 cycles per minute that is suitable for washing delicate fabrics. When the 4-pole run winding 42 is energized with reverse polarity, the rotor 44 runs in the reverse direction at its high speed of approximately 1725 r.p.m. effecting normal spinning of the spin tub 20 at a speed of about 640 r.p.m. that is suitable for water-extracting normal fabrics; and when the 6-pole run winding 43 is energized with reverse polarity, the rotor 44 runs in the reverse direction at its low speed of approximately 1140 r.p.m. effecting gentle spinning of the spin tub 20 at a speed of about 420 r.p.m. that is suitable for water-extracting delicate fabrics.

Again referring to FIG. 1, the rear portion of the top wall 13 carries an upstanding backsplash 29 that, in turn, carries manually settable control equipment that is incorporated in the control circuit of the machine 10. Specifically, the backsplash 29 carries a number of washes switch 110, a first wash temperature switch 120, a soak control switch 130, an agitate control switch 140, a number of rinses switch 150, a rinses temperature switch 160, and a spin control switch 17 G; which switches are of the two-position pushbutton type. Also, the backsplash 29 carries a fill control switch and a time control switch which switches are of the 3-position rotary type. Further, the backsplash 29 carries a program controller 50 that includes a rotatably mounted operating shaft 51 projecting forwardly through a cooperating hole provided in the front wall of the backsplash 29 and carrying on the extreme front end thereof a manually operable knob and index pointer 52 that cooperates with an associated stationary ring-like index plate 53 mounted upon the front wall of the backsplash 29.

As shown in FIG. 6, the number of washes switch 110 is of the manually operable pushbutton type including a pair of interlocked pushbuttons 111 and 112 arranged so that operation of one of the pushbuttons mentioned restores the other of the pushbuttons mentioned. The first wash temperature switch 120, the soak control switch 130, the agitate control switch 148, the number of rinses switch 150, the rinses temperature switch 168 and the spin control switch 170 are also of the manually operable pushbutton type respectively including the pairs of interlocked

pushbuttons

121, 122 and 131, 132 and 141, 142 and 151, 152 and 161, 162 and 171, 172. Preferably, the

switches

110, 120, 139, 140, 150, 168 and 170 are of the construction and arrangement of that disclosed in US. Patent No. 2,431,904, granted on December 2, 1947 to JohnF. Andrews. In the switch 118, the individual pushbuttons 111 and 112 respectively comprise a one-wash pushbutton and a two-wash pushbutton; the pushbutton 111 governs a switch spring 113; and the pushbutton 112 governs two switch springs 114 and 115. In the switch 128, the individual pushbuttons 121 and 122 respectively comprise a hot pushbutton and a warm pushbutton; and the pushbutton 122 governs a switch spring 123. In the switch 130, the individual pushbuttons 131 and 132 respectively comprise a soak pushbutton and an agitate pushbutton; and the pushbutton 131 governs a switch spring 133. In the switch 140, the

individual pushbuttons

141 and 142 respectively comprise a normal pushbutton and a gentle pushbutton; the pushbutton 141 governs a switch spring 143; and the pushbutton 142 governs a switch spring 144. In the switch 150, the

individual pushbuttons

151 and 152 respectively comprise a one-rinse pushbutton and a two-rinse pushbutton; the pushbutton 151 governs a switch spring 153; and the pushbutton 152 governs a switch spring 154. In the switch 160, the

individual pushbuttons

161 and 162 respectively comprise a warm pushbutton and a cold push button; and the pushbutton 161 governs a switch spring 163. In the switch 170, the

individual pushbuttons

171 and 172 respectively comprise a normal pushbutton and a gentle pushbutton; the pushbutton 171 governs a switch spring 173; and the pushbutton 172 governs a switch spring 174.

As shown in FIG. 7, the fill control switch 180 is of the manually operable rotary type including a rotatably mounted operating shaft 181 carrying a manual dial and index pointer 182 on the outer end thereof and a wiper 183 on the inner end thereof. The index pointer 182 cooperates with index legends carried on the front wall of the backsplash 29, and the wiper 183 cooperates with three

contact segments

184, 185 and 186. When the index pointer 182 cooperates with the index Large Load, the wiper 183 engages only the contact segment 184; when the index pointer 182 cooperates with the index Normal Load, the wiper 1S3 engages the two

contact segments

184 and 185; and when the index pointer 182 cooperates with the index Small Load, the wiper 183 engages the two

contact segments

184 and 186. The time control switch 198 is of the manually operable rotary type including a rotatably mounted operating shaft 191 carrying a manual dial and index pointer 192 on the outer end thereof and a wiper 193 on the inner end thereof. The index pointer 192 cooperates with index legends carried on the front wall of the backsplash 29, and the wiper 193 cooperates with three

contact segments

194, 195 and 196. When the index pointer 192 cooperates with the index minutes, the wiper 193 engages only the contact segment 194; when the index 6 pointer 192 cooperates with the index 7 minutes, the wiper 193 engages the two

contact segments

194 and 195; and when the index pointer 192 cooperates with the index 3 minutes, the wiper 193 engages the three

contact segments

194, 195 and 196.

As best shown in FIG. 8, the program controller 50 further comprises a plurality of insulating

cams

7B, 6B, 1B, 3B, 5B, 2B, 6T, 4T, 1T, 43, 5T, 3T and 2T, that are rigid secured to the operating shaft 51, and that respectively control the armature springs C1, MC, C2, FL, F2, MP, S2, S4, P5, P2, P3, P4 and P6. The armature springs C1, MC, FL, F2, MP, S2, S4, P2, P3, P4 and P6 respectively govern the pairs of switch springs CW, HR and H, PR and PF, ML and BD, NP and W, S and K1, J1 and K2, I2 and A1, A2 and A3, B1 and A4, B2 and BP, E; while the armature springs C2 and P5 respectively govern the single switch springs CR and SS.

Also, the operating shaft 51 is mounted for longitudinal axial movement, as well as for the rotary movement previously described; whereby the operating shaft 51 carries a contact bridging member 60 that is adapted selectively to bridge an associated pair of front contacts and constituting a line switch. More particularly, when the manual dial 52 is depressed, moved inwardly toward the front wall of the backsplash 29, the operating shaft 51 is moved longitudinally inwardly so as to actuate the line switch 60 into its open position; conversely, when the manual dial 52 is withdrawn, pulled outwardly away from the front wall of the backsplash 29, the operating shaft 51 is moved longitudinally outwardly so as to actuate the line switch 60 into its closed position.

Also, the program controller 50 comprises a shaft 54 that is mounted only for rotary movement; and the outer end of the shaft 54 is connected to the adjacent inner end of the operating shaft 51 by an associated sleevelike connector 55 that accommodates the relative longitudinal axial sliding movement of the operating shaft 51 with respect to the shaft 54, while maintaining the normal rotary connection therebetween. Further, the program controller 50 comprises a time motor TM and a position advance motor PA, both of the synchronous type and preferably Telechron motors. The timer motor TM comprises an operating shaft 56 that is connected by a gear box 57 and an overrunning clutch 58 to the inner end of the shaft 54; and the position advance motor PA comprises an operating shaft 56 that is connected by a gear box 57 and an overrunning clutch 58 to the inner end of a shaft 54' that is mounted for rotation adjacent to the shaft 54. Also, the intermediate portions of the shafts 54 and 54' respectively carry

gears

59 and 59 that are meshed. In the arrangement, energization of the timer motor TM effects rotation of the operating shaft 51 at a relatively slow speed in the clockwise direction and on a timed basis; whereas energization of the position advance motor PA effects rotation of the operating shaft 51 at a relatively fast speed in the clockwise direction and without reference to time. The overrunning cluthes 58 and 58' prevent interference between the motors TM and PA, and also accommodate manual rotation of the operating shaft 51 in the clockwise direction under the direct control of the manual dial 52.

Further, the program controlled 58 comprises longitudinal or axial reset mechanism, as best shown in FIGS. 3, 4 and 8, and that essentially comprises a ring 61 rigidly affixed to the operating shaft 51 and carrying an outwardly or radially projecting pin 62. In turn, the pin 62 cooperates with a reset spring 63 that is externally supported, as indicated at 64. In the arrangement, when the operating shaft 51 occupies its rotary start or off position illustrated in FIGS. 3, 4 and 8, the manual dial 52 may be manually moved by the operator outwardly with respect to the front wall of the backsplash 29'; whereby the operating shaft 51 is moved from its axial stop position illustrated in FIGS. 3, 4 and 8 into its axial start position. When the operating shaft 51 is thus moved into its axial start position, the line switch 60 is closed and the pin 62 carried by the ring 61 is moved axially outwardly with respect to the extreme outer end of the reset spring 63 (the pin 62 is moved above the extreme outer end of the reset spring 63, as illustrated in FIG. 4). As explained more fully hereinafter, at this time, the motors TM and PA effect rotation of the operating shaft 51 in the clockwise direction and out of its normal rotary start position. After approximately 330 of such rotation of the operating shaft 51 in the clockwise direction, as viewed in FIG. 3, the pin 62 is rotated below the extreme outer end of the reset spring 63 so that continued rotation of the operating shaft 51 in the next 30 and back into its rotary start position causes cooperation between the pin 62 and the extreme outer end of the reset spring 63 so that the operating shaft 51 is moved inwardly with respect to the front wall of the backsplash 29 (downwardly with reference to the reset spring 63, as viewed in FIG. 4) and back into its axial stop position. When the operating shaft 51 is thus moved back into its axial stop position, the line switch 60 is opened in order to terminate operation of the motors TM and PA, whereby further rotation of the operating shaft 51 is arrested when it occupies its rotary start position, as well as its axial stop position.

Referring now to FIG. 2, the stationary ring-like index plate 53, with which manual dial and index pointer 52 cooperates, carries the circumferentially arranged in; dicia: Off, First Wash, Spin, Second Wash, Spin, Bonus Rinse, Spin, Final Rinse, and Final Spin. As the cycle of the machine proceeds, the operating shaft 51 of the program controller 50 is rotated out of its rotary start position, causing the index pointer 52 to be rotated out of its corresponding Off position, these rotations being in the clockwise direction, as viewed in FIG. 2; whereby the progress of the cycle is indicated by the cooperation of the index pointer 52 with the index plate 53 in an obvious manner.

Considering now in greater detail the construction and arrangement of the program controller 50, as shown in FIG. 5, the same may comprise three mutually spacedapart supporting

plates

301, 302 and 303, the motors TM and PA may be supported by the plate 301 and arranged between the

plates

301 and 302, the

gear boxes

57 and 57 may be supported by the plate 302 and arranged between the

plates

302 and 303, and the

clutches

58 and 58 and the gears 59 and 59' may be arranged between the

plates

302 and 303. In the arrangement, the gear train in the gear box 57 includes a driven shaft 304 that may be rotated in the clockwise direction at a speed of 1 revolution per hour in response to synchronous running of the motor TM, and the gear train in the gear box 57 includes a driven shaft 304 that may be rotated in the counter clockwise direction at a speed of 1 revolution per minute in response to synchronous running of the motor PA. The

shafts

54 and 54 are mounted in the plate 303 for rotation in alignment with the respective shafts 304 and 304'; and the gears 59 and 59' are rigidly secured to the

shafts

54 and 54, respectively, and positioned adjacent to the plate 303. Also, a collar and mandrel element 305 is pinned to the shaft 54 adjacent to the gear 59 and forming a part of the clutch 58; and, likewise, a collar and mandrel element 305 is pinned to the shaft 54 adjacent to the gear 50 and forming a part of the clutch 58. The inner end of the mandrel 305 is hollow and loosely receives the outer end of the shaft 304; and, similarly, the inner end of the mandrel 305 is hollow and loosely receives the outer end of the shaft 304'. A plate 306 is pinned to the shaft 304 adjacent to the inner end of the mandrel 305; and, likewise, a plate 306 is pinned to the shaft 304 adjacent to the iner end of the mandrel 305'. A steel coil spring 307 is Wound in the counterclockwise direction upon the mandrel 305 and in contact therewith and fixed to the plate 306 and forming a part of the clutch 58; and, similarly, a steel coil spring 307 is wound in the clockwise direction upon the mandrel 305' and in contact therewith and fixed to the plate 306' and forming a part of the clutch 58.

Rotation of the shaft 304 in the clockwise direction by the motor TM through the gear box 57 causes the coil spring 307 further to wind upon the mandrel 305 in order to increase the frictional drag therebetween, so that the mandrel 305 is clutched to the plate 306 effecting rotation thereof, together with the shaft 54 and the gear 59, in the clockwise direction, with the result that the gear 59 rotates the gear 59 and the shaft 54" in the counter clockwise direction. This direction of rotation of the mandrel 305 causes the coil spring 307 to unwind thereon in order to reduce the frictional drag therebetween, so that the rnandrcl 305' is further unclutched from the plate 306'; thereby-to prevent interference by the motor PA with operation of the motor TM to rotate the shaft 54 in the clockwise direction at 1 r.p.h.

Rotation of the shaft 304 in the counter clockwise direction by the motor PA through the gear box 57' causes the coil spring 307 further to wind upon the mandrel 305' in order to increase the frictional drag therebetween, so that the mandrel 305' is clutched to the washer 306' effecting rotation thereof, together with the shaft 54 and the gear 59, in the counterclockwise direction, with the result that the gear 59 rotates the gear 59 and the shaft 54 in the clockwise direction. This direction of rotation of the mandrel 305 causes the coil spring 307 to unwind thereon in order to reduce the frictional drag therebetween, so that the mandrel 305 is further unclutched from the plate 306, thereby to prevent interference by the motor TM with operation of the motor PA to rotate the shaft 54 in the clockwise direction at 1 rpm.

When the motor TM is operated, while the motor PA is stopped, the clutch 58 effects the drive from the shaft 304 to the shaft 54, and the clutch 58' accommodates overdrive of the slow-running shaft 54 with respect to the stalled shaft 304'; whereby the operating shaft 51 is rotated in the clockwise direction at l r.p.h. On the other hand, when the motor PA is operated, simultaneously with operation of the motor TM, the clutch 58 effects the drive from the shaft 304' to the shaft 54', and thence via the gears 59', 59 to the shaft 54, and the clutch 58 accommodates overdrive of the fast-running shaft 54 with respect to the slow running shaft 304; whereby the operating shaft 51 is rotated in the clockwise direction at 1 rpm.

The ratio between the gears 59, 59' may be 1:1, since the speeds of the two

shafts

304 and 304 may be established by the two gear trains respectively arranged in the two boxes 57 and 57'.

Considering now in greater detail the control circuit, as illustrated in FIGS. 6, 7 and 8, the same comprises a terminal block 200A to which a source of electric power supply of l18-volts, single-phase, 60 cycle, A.-C., is connected; this source including two line conductors L1 and L2. Also, the machine 10 comprises a thermal protective device 200B and a balance switch 200C. The thermal protective device 200B may be of any suitable type, such, for example, as a resettable circuit breaker operative into an open position in response to an overload current condition for a given short time interval. The balance switch 200C may be of any conventional type and is operative from a normal closed position into an open position in response to abnormal vibration of the machine 10, such as may occur in a spinning operation of the spin tub 20 with a heavy unbalanced load of clothes therein. In the circuit, the line conductor L2 is connected via the thermal protective device 200B and the balance switch 200C in series relation to a supply conductor 206.

Considering now in greater detail the wiring diagram,

the switch springs of the program controller 50 terminate the conductors as follows:

Switch Spring Terminated Switch Spring Terminated Conductor Conductor In the switch 110: the switch springs 113 and 114 are commonly connected to the conductor 222; the switch spring 115 is connected to the conductor 226; and the cnotacts respectively governed by the switch springs 113, 114 and 115 are respectively connected to the

conductors

224, 228 and 223. In the switch 120: the switch spring 123 is connected to the conductor 204; and the contact governed by the switch spring 123 is connected to the conductor 201. In the switch 130: the switch spring 133 is connected to the conductor 213; and the contact governed by the switch spring 133 is connected to the conductor 217. In the switch 140: the switch springs 143 and 144 are commonly connected to the conductor 211; and the contacts respectively governed by the switch springs 143 and 144 are respectively connected to the

conductors

225 and 227. In the switch 150: the switch springs 153 and 154 are comonly connected to the conductor 223; and the contacts respectively governed by the switch springs 153 and 154 are respecitvely connected to the

conductors

221 and 218. In the switch 160: the switch spring 163 is connected to the conductor 204; and the contact governed by the switch spring 163 is connected to the conductor 203. In the switch 170: the switch springs 173 and 174 are commonly connected to the conductor 213; and the contacts respectively governed by the switch springs 173 and 174 are respectively connected to the

conductors

225 and 227. In the switch 180: the

contact segments

184, 185 and 186 are respectively connected to the

conductors

208, 210 and 207. In the switch 190: the

contact segments

194, 195 and 196 are respectively connected to the

conductors

224, 219 and 220.

The hot solenoid 27a is bridged across the

conductors

212 and 204; the cold solenoid 28a is bridged across the

conductors

212 and 202; the bleach solenoid 35a is bridged across the

conductors

212 and 209; and the detergent solenoid 30a is bridged across the

conductors

228 and 204.

In the drive motor 40: the 4-pole start winding 44 is bridged across the

conductors

214 and 216; the 4-pole run winding 42 is bridged across the

conductors

208 and 225; and the 6-pole run winding 43 is bridged across the

conductors

208 and 229. Also, the back contacts governed by the contact bridging member 48 respectively terminate the

conductors

206 and 205; the front contacts governed by the contact bridging member 48 respectively terminate the

conductors

206 and 208; the back contacts governed by the contact bridging member 49 respectively terminate the

conductors

227, 225 and 215; and the front contacts governed by the contact bridging member 49 respectively terminate the

conductors

227 and 229.

In the program controller 50; the timer motor TM is bridge across the

conductors

206 and 226; the position advance motor PA is bridged across the

conductors

206 and 224; and the contacts governed by the contact bridging member 60 of the line switch respectively terminate the conductors 226 and L1.

Before proceeding with the particular controls that are carried out by the program controller 50 in conjunction with the various switches 110, etc., in the automatic cycle of operation of the control circuit, reference is first made to FIG. 9, wherein there are disclosed the fundamental items of the program controller 50, including the control cams 7B, etc., the switch spring sets CW-Cl-HR, etc;, respectively governed by the control cams 7B, etc., as well as the sequence of the opening and the closing of the contact sets in the cycle of operation of the program controller 50. This chart is read from left to right; and the closure time intervals of each pair of switch springs are indicated by solid or filled-in blocks. For example: the control carn 7B actuates the switch spring C1 to close the switch spring CW and to open the switch spring HR during the first eight steps or time intervals of the cycle; the control cam 7B then actuates the switch spring C1 to open both of the switch springs CW and HR during the next twenty-two steps of the cycle; the control cam 7B then actuates the switch C1 to open the switch CW and to close theswitch spring HR during the next twenty-two steps of the cycle; etc. Of course, the other control cams 613, etc., govern the other switch spring sets H-MC-PR, etc., in a similar manner and simultaneously in the cycle of the program controller 50, as is evident from an examination of this chart.

Now assuming that an automatic program is to be carried out in the machine 10, when the manual dial 52 occupies its rotary start or off position and that the operating shaft 51 is in its axial stop position, the circuits are in the condition illustrated in REG. 8 and indicated in FIG. 9. Further, assuming that in the program: two washes are desired, so that the pushbutton 112 in the switch is depressed; hot first wash is desired, so that the pushbutton 121 in the switch is depressed; no soak is desired between the two sections of the first wash, so that the pushbutton 132 in the switch is depressed; normal agitation in the washes is desired, so that the pushbutton 141 in the switch is depressed; two rinses are desired, so that the pushbutton 152 in the switch is depressed; 'warm rinses are desired, so that the pushbutton 161 in the switch is depressed; normal spinning in the water-extractions are desired, so that the pushbutton 171 is depressed; a normal load is indicated, so that the control dial 182 of the switch is rotated to its normal load position; and that a wash time interval of 10 minutes is indicated, so that the control dial 192 of the switch is rotated to its lO-minutes position. At this time the circuits are in the preselected condition illustrated in FIGS. 6, '7, and 8; and hereinafter, this particular program thus preselected is referred to as the basic program as a standard of comparison.

Also, it may be assumed that the detergent dispenser 30 contains a suitable liquid detergent and the bleach dispenser 35 contains a suitable liquid bleaching agent. Further, it may be assume-d that each of these liquid dispensers is responsive to energization and subsequent deenergization of the solenoid thereof to effect operation thereof to dispense into the spin tub 20 a measured charge of the corresponding contained liquid. The operator then places the clothes and the required initial detergent in the spin tub 20, and closes the top door 14. In order to initiate this preselected basic program, the operator merely manually pulls the control dial 52 of the program controller 50 outwardly with respect to the front wall of the backsplash 29, whereby the operating shaft 51 is moved from its axial stop position of FIG. 4 into its axial start position, so as to close the line switch 60.

In the present example, closure of the line switch 60 completes a circuit for operating the timer motor TM via the elements L1, 60, 226, TM, 206, 202, 201, L2; whereby the timer motor TM drives or rotates the operating shaft 51 of the program controller 50 in the clockwise direction, as viewed in FIG. 2, out of its rotary start or off position (also, #1 position as illustrated in the chart of FIG. 9), the drive connection including the elements TM, 56, 57, 58, 54, 55 and 51. Also, it is noted that at this time, since the operating shaft 51 occupies its axial start position, the pin 62 is disposed outwardly of the reset spring 63 (above the reset spring 63, as shown in FIGS. 3 and 4); which arrangement is subsequently involved in resetting the operating shaft 51. back into its axial stop position, as explained hereinafter. Also, closure of the line switch 60 completes a circuit for energizing the hot solenoid 27a, this circuit including the elements L1, 60, .226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, 27a, 1204, H, MC, 205, 48, 206, 202, 201, L2. Energization of the hot solenoid 27a effects opening of the hot Water valve 27, whereby hot water is introduced from the hot water pipe 24 via the tube 26 into the spin tub 20.

After a time interval of 4 minutes, the operating shaft '51 of the program controller 50 is rotated into position #5 (see the chart of FIG. 9); whereby the control cam 5B actuates the switch spring F2 to close the switch spring NF, thereby to complete forward start and run circuits for respectively energizing the start and run

windings

44 and 42 of the drive motor 40. The forward start circuit mentioned includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, W, 211, 143, 225, 49, 215, 11, S2, 214, 44, 216, S4, K2, 208, 184, 183, 185, 210, NE, F2, 206, 202, 201, L2; and the forward run circuit mentioned includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, W, 211, 143, 225, 42, 208, 184, 183, 185, 210, NE, F2, 206, 202, 201, L2. The drive motor 40 starts rotating its rotor 41 in the forward direction; whereby the centrifugal device 46 actuates the bridging

members

48 and 49, when the rotor 41 gains about 60% of its normal running speed. Specifically, the device 46 actuates the bridging

members

48 and 49 to open their back contacts and to close their front contacts. Opening of its back contacts by the bridging member 49, interrupts the forward start circuit for the start winding 44. Opening of the back contacts by the bridging member 48, interrupts the previously traced circuit for the hot solenoid 27a; whereby the hot water valve 27 returns to its closed position to cut-off the supply of hot water to the spin tub 20.

Closure of the front contacts by the bridging member 48, completes a forward holding circuit for energizing the run winding 42 of the drive motor 40; this forward holding circuit includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, W, 211, 143, 225, 42, 208, 48, 206, 202, 201, L2. Closure of the forward holding circuit effects continued energization of the run winding 42, so that the rotor 41 accelerates on into its norm-a1 running speed of about 1725 rpm. in the forward direction, in order to effect oscillation of the agitator 22 at its normal rate of about 64 cycles per minute to produce a normal washing action upon the clothes suspended in the hot water in the spin tub 20. It is noted that operation of the drive motor 40 was thus initiated in position #5 of the operating shaft 51; whereby the hot water valve 27 was closed, as described above, with the result that the hot water was supplied into the spin tub 19a during a corresponding time interval of 4 minutes, producing a normal fill of hot "water therein for use in the wash cycle.

When the operating shaft 51 is rotated into position #10, the control cam 5B actuates the switch spring F2 to close the switch spring BD; and when the operating shaft 51 is rotated into position #12, the control cam 5B actuates the switch spring F2 to open the switch spring BD; whereby a circuit is completed and then interrupted for energizing the solenoid 35a of the bleach dispenser, so as to cycle the same in order to cause a measured charge of the liquid bleach agent to be introduced via the tube 36 into the spin tub 20. The above-mentioned circuit for energizing the bleach solenoid 35a, when completed, includes the elements L1, 60, 226, P3, B1, 223,

12 154, 218, 133, 217, P6, E, 212, 35a, 209, BD, F2, 206, 202, 201, L2.

When the operating shaft 51 is rotated into position #13, the control cam 1B actuates the switch spring C2 to close the switch spring CR, so as to complete a circuit for energizing the cold solenoid 23a; this circuit including the elements L1, 60, 226, P3, B1, 223, 154, 218, 133, 217, P6, E, 2122811, 202, C2, CR, 205, MC, PR, 206, 202, 201, L2. When the operating shaft 51 is rotated into position #14, the control cam 1B actuates the switch spring C2 to open the switch spring CR, so as to interrupt the circuit for the cold solenoid 23a. Thus, the cold water valve 28 is maintained open for a time interval of 1 minute, while the operating shaft occupies position #13, so as to cause cold water to be introduced via the tube 26 into the spin tub 20 during the first washing action in order to insure ample water in the spin tub 20 following the introduction of the liquid bleach thereinto from the bleach dispenser in position #12 of the operating shaft 51.

The washing action thus initiated in position #5 of the operating shaft 51 continues for a time interval of 10 minutes, whereupon the operating shaft 51 is rotated into position #15, with the result that the control cam 23 actuates the switch spring MP to open the switch spring W. Opening of the switch springs MP, W interrupts the forward holding circuit for energizing the run winding 42 of the drive motor 40, so that the rotor 41 stops to terminate the washing action of the agitator 22 in the spin tub 20. Stopping of the rotor 41 causes the device 46to reset the bridging

members

43 and 49 into their back positions, as shown in FIG. 8.

After a time interval of 1 minute, the operating shaft 51 is rotated into postion #16, whereupon the control cam 2B actuates the switch spring MP to close the switch spring S, thereby to complete reverse start and run circuits for respectively energizing the start and run

windings

44 and 42 of the drive motor 40. The reverse start circuit mentioned includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, S, 213, 173, 225, 49, 215, I2, S4, 216, 44, 214, S2, K1, 208, ML, FL, 206, 202, 201, L2; and the reverse run circuit mentioned includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, S, 213,173, 225, 42, 208, ML, FL, 206, 202, 201, L2. The drive motor 40 starts rotating its rotor 41 in the reverse direction; whereby the centrifugal device 46 actuates the bridging

members

48 and 49 at about 60% normal running speed. Specifically, the bridging member 49 interrupts the reverse start circuit; and the bridging member 48 completes a reverse holding circuit for energizing the run winding 42 of the drive motor 40; which reverse holding circuit includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212 MP, S, 213, 173, 225, 42, 208, 48, 206, 202, 201, L2. The rotor 41 then accelerates into its normal running speed of about 1725 rpm. in the reverse direction; thereby to effect spinning of the spin tub 20 at its normal speed of about 640 rpm. to produce a normal water-extraction action upon the clothes therein. The wash water spun from the spin tub 20 is caught in the drain tub '15 and pumped to the drain plumbing, not shown, in the usual manner.

Also, in position #16 of the operating shaft 51, the control cam 1B actuates the switch spring C2 to close the switch spring CR, thereby to complete a circuit for energizing the cold solenoid 280, so as to effect opening of the cold water valve 28; with the result that cold water is introduced from the cold water pipe 25 via the tube 26 into the spin tub 20 during spinning thereof. This effects a spraying action upon the clothes as they are spun in the spin tub 20; and the water thus introduced into the spin tub 20 is expelled therefrom and caught in the drain tub 15 and then pumped to the drain plumbing, as previously explained. The circuit noted above for energizing the cold solenoid 28a includes the elements 13 L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, 28a, 202, C2, CR, 205, MC, PR, 206, 202, 201, L2.

Subsequently, after a time interval of 1 minute, the operating shaft 51 is rotated into position #17, whereby the control cam 1B actuates the switch spring CR to open the switch spring C2, thereby to interrupt the circuit for energizing the cold solenoid 280, so as to effect closing of the cold valve 28 in order to terminate the introduction of cold water from the cold water pipe via the tube 26 into the spinning spin tub 20, with the result that the spray action described above is terminated.

The spinning of the spin tub 20 initiated in position #16 of the operating shaft 51 continues for a time interval of 3 minutes, whereupon the operating shaft 51 is rotated into position #10, with the result that the control cam 2B actuates the switch spring MP to open the switch spring S. Opening of the switch springs MP, S interrupts the reverse holding circuit for energizing the run winding 42 of the drive motor 40, so that the rotor 41 stops to terminate the spinning of the spin tub 20.

Stopping of the rotor 41 causes the device 46 to reset the bridging

members

48 and 49 into their back positions, as shown in FIG. 8.

After a time interval of 1 minute, the operating shaft 51 is rotated into position #20, whereby the control cam 6B actuates the switch spring MC to close the switch spring H, thereby to complete a circuit for energizing the detergent solenoid a; this circuit including the elements L1, 60, 226, P3, A3, 222, 114, 228, 30a, 204, H, MC, 205, 48, 206, 202, 201, L2.

Also, closure of the switch springs MC, H complete a circuit for energizing the hot solenoid 27a; this circuit including the elements L1, 60, 226, 115, 223, 154, 218, P5, SS, 217, P6, E, 212, 27a, 204, H, MC, 205, 48, 206, 202, 201, L2. Ener'gization of the hot solenoid 27a effects opening of the hot water valve 27, whereby hot water is introduced from the hot water pipe 24 via the tube 26 into the spin tub 20.

At this point, it is noted that the above-traced circuit for energizing the hot solenoid 27a is independent of the positions of the control switch 120; and since the control cam 7B maintains open the switch springs C1, CW, there is no possibility of energization of the cold solenoid 28a at this time. Thus, the second Wash cycle always proceeds employing hot water in the spin tub 20.

After a time interval of 4 minutes, the operating shaft 51 is rotated into position #24, whereby the control cam 5B actuates the switch spring F2 to close the switch spring NF, thereby to complete forward start and run circuits for respectively energizing the start and run

windings

44 and 42 of the drive motor 40. The forward start circuit mentioned includes the elements L1, 60, 226, 115, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, W, 211, 143, 225, 49, 215, J1, S2, 214, 44, 216, S4, K2, 208, 184, 183, 185, 210, NE, F2, 206, 202, 201, L2; and the forward run circuit mentioned includes the elements L1, 60, 226, 115, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, W, 211, 14-3, 225, 42, 208, 184, 183, 185, 210, NF, F2, 206, 202, 201, L2. The drive motor 40 starts rotating its rotor 41 in the forward direction; whereby the device 46 actuates the bridging

members

48 and 49 in the manner previously explained. Specifically, the bridging member 49 opens its back contacts to interrupt the start circuit for the start winding 44. The bridging member 48 opens its back contacts to interrupt the circuit for energizing the detergent solenoid 30a and the circuit for energizing the hot solenoid 27a. The detergent dispenser 30 completes its cycle tointroduce a measured charge of detergent via the tube 31 into the spin tub 20; and the hot water valve 27 returns to its closed position to cut-off the supply of hot water to the spin tub 20. Closure of its front contacts by the bridging member 48 completes a forward holding circuit for energizing the run winding 42 of the drive motor this forward holding circuit including the elements L1, 60, 226, 115, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, W, 211, 143, 225, 42, 208, 40, 206, 202, 201, L2. Closure of the forward holding circuit effects continued energization of the run winding 42, so that the rotor 41 accelerates on into its normal running speed of about 1725 rpm. in the forward direction in order to effect oscillation of the agitator 22 at its normal rate of about 64 cycles per minute to produce a normal washing action upon the clothes suspended in the hot water in the spin tub 20 in the usual manner. It is noted that the hot water valve 27 was opened in position #20 of the operating shaft 51 and was closed in position #24 of the operating shaft 51, whereby hot water was introduced into the spin tub 20 during a time interval of 4 minutes, so as to produce a normal fill of hot water therein for use in the wash cycle.

The washing action thus initiated in position #24 of the operating shaft 51 continues for a time interval of 3 minutes, whereupon the operating shaft 51 is rotated into position #27, with the result that the control cam 23 actuates the switch spring MP to open the switch spring W to interrupt the forward holding circuit for the run winding 42 of the drive motor 40, so that the rotor 41 stops to terminate the washing action of the agitator 22 in the spin tub 20. Also, the device 45 resets the bridging

members

48 and 49 into their back positions, as shown in FIG. 8.

After a time interval of 1 minute, the operating shaft 51 is rotated into position #28, whereupon the control cam 2B actuates the switch spring MP to close the switch spring S, thereby to complete reverse start and run circuits for respectively energizing the start and run

windings

44 and 42 of the drive motor 40. The reverse start circuit mentioned includes the elements L1, 60, 226, 115, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, S, 213, 173, 225, 49, 215, I2, S4, 216, 44, 214, S2, K1, 208, ML, FL, 206, 202, 201, L2; and the reverse run circuit mentioned includes the elements L1, 60, 226, 115, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, S, 213, 173, 225, 42, 208, ML, FL, 206, 202, 201, L2. The drive motor 40 starts rotating its rotor 41 in the reverse direction; whereby the device 46 actuates the bridging

members

48 and 49 in the manner previously explained. Specifically, the bridging member 49 interrupts the reverse start circuit; and the bridging member 48 completes a reverse holding circuit for energizing the run winding 42 of the drive motor 40; which reverse holding circuit includes the elements L1, 60, 226, 115, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, S, 213, 173, 225, 42, 208, 48, 206, 202, 201, L2. The rotor 41 then accelerates into the normal running speed of about 1725 r.p.m. in the reverse direction; thereby to effect spinning of the spin tub 20 at its normal speed of about 640 rpm. to produce a normal water-extraction action upon the clothes therein. The wash water spun from the spin tub 20 is caught in the drain tub 15 and pumped to the previously mentioned drain plumbing.

Also, in position #28 of the operating shaft 51, the control cam 18 actuates the switch spring C2 to close the switch spring CR, thereby to complete a circuit for energizing the cold solenoid 28a, so as to effect opening of the cold Water valve 20, with the result that cold water is in troduced from the cold water pipe 25 via the tube 26 into the spin tub 20 during spinning thereof. This effects a spraying action upon the clothes as they are spun in the spin tub 20; and the water thus introduced into the spin tub 20 is expelled therefrom and caught in the drain tub 15 and then pumped to the drain plumbing. The circuit noted above for energizing the cold solenoid 28a includes the elements L1, 60, 226, 115, 223, 154, 218, P5, SS, 217, P6, E, 212, 28a, 202, C2, CR, 205, MC, PR, 206, 202, 201, L2.

Subsequently, after a time interval of 1 minute, the operating shaft 51 is rotated into position #29, whereby the control cam 1B actuates the switch spring CR to open 1 5 the switch spring C2, thereby to interrupt the circuit for energizing to cold solenoid 2811, so as to effect closing of the cold valve 28 in order to terminate the introduction of cold water from the cold water pipe 25 via the tube 26 into the spinning spin tub 20, with the result that the spray action described above is terminated.

The spinning of the spin tub 20 initiated in position #28 of the operating shaft 51 continues for a time interval of 3 minutes, whereupon the operating shaft 51 is rotated into position #31, with the result that the control cam 28 actuates the switch spring MP to open the switch spring S to interrupt the reverse holding circuit for the run winding 42 of the drive motor 40, so that the rotor 41 stops to terminate the spinning of the spin tub 20. Also, the device 46 resets the bridging

members

48 and 49 into their back positions, as shown in FIG. 8.

After a time interval of 1 minute, the operating shaft 51 is rotated into position #32, whereby the control cam 1B actuates the switch spring C2 to close the switch spring CR, thereby to complete a circuit for energizing the hot solenoid 27a and also a circuit for energizing the cold solenoid 28a, whereby both the hot water valve 27 and the cold water valve 28 are opened with the result that hot water from the hot water pipe 24 and cold water from the cold water pipe 25 are mixed to produce warm water that is introduced via the tube 26 into the spin tub 20. The circuit for energizing the hot solenoid 27a includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, ss, 217, P6, E, 212, 27a, 204, 163, 203, HR, C1, 202, C2, CR, 205, 48, 206, 202, 201, L2; and the circuit for energizing the cold solenoid 28a includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, 28a 202, C2, CR, 205, 48, 206, 202, 201, L2.

After a time interval of 4 minutes, the operating shaft 51 is rotated into position #36, whereby the control cam 5B actuates the switch spring F2 to close the switch spring NF, thereby to complete forward start and run circuits for respectively energizing the start and run

windings

44 and 42 of the drive motor 40. The forward start circuit mentioned includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, W, 211, 143, 225, 49, 215, 11, S2, 214, 44, 216, S4, K2, 208, 184, 183, 185, 210, NF, F2, 206, 202, 201, L2; and the forward run circuit mentioned includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, W, 211, 143, 225, 42, 208, 184, 183, 185, 210, NE, F2, 206, 202, 201, L2. The drive motor 40 starts rotating its rotor 41 in the forward direction; whereby the drive 46 actuates the bridging

members

48 and 49 in the manner previously explained. Specifically, the bridging member 49 opens its back contacts to interrupt the start circuit for the start winding 44. The bridging member 48 opens its back contacts to interrupt the circuits for the hot solenoid 27a and the cold solenoid 28a, whereby the hot water valve 27 and the cold water valve 28 are returned to their closed positions to cut-off the supply of warm water to the spin tub 20. Also, the bridging member 48 completes a forward holding circuit for energizing the run Winding 42 of the drive motor 40; this forward holding circuit including the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, W, 211, 143, 225, 42, 208, 48, 206, 202, 201, L2. Closure of the forward holding circuit eifects continued energization of the run winding 42, so that the rotor 41 accelerates on into its normal running speed of about 1725 rpm. in the forward direction in order to effect oscillation of the agitator 22 at its normal rate of about 64 cycles per minute to produce a deep agitated rinsing action upon the clothes suspended in the warm water in the spin tub 20 in the usual manner. It is noted that the hot water valve 27 and the cold water valve 28 were opened in position #32 of the operating shaft 51 and were closed in position #36 of the operating shaft 51, whereby warm water was introduced into the spin tub 20 during a time interval of 4 minutes, so as to produce a 10 normal fill of warm water therein for use in the bonus rinse cycle.

The deep agitated rinsing action thus initiated in position #36 of the operating shaft 51 continues for a time interval of 2 minutes whereupon the operating shaft 51 is rotated into position #38, with the result that the control cam 2B actuates the switch spring MP to open the switch spring W to interrupt the forward holding circuit for the run winding 42 of the drive motor 40, so that the motor 41 stops to terminate the deep agitated rinsing action. Also, the device 46 resets the bridging

members

48 and 49 into their back positions, as shown in FIG. 8.

After a time interval of 1 minute, the operating shaft 51 is rotated into position #39, whereupon the control cam 2B actuates the switch spring MP to close the switch spring S, thereby to complete reverse start and run circuits for respectively energizing the start and run

windings

44 and 42 of the drive motor 40. The reverse start circuit mentioned includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, S, 213, 173, 225, 49, 215, I2, S4, 216, 44, 214, S2, K1, 208, ML, FL, 206, 202, 201, L2; and the reverse run circuit mentioned includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, S, 213, 173, 225, 42, 208, ML, FL, 206, 202, 201, L2. The drive motor 40 starts rotating its rotor 41 in the reverse direction; whereby the device 46 actuates the bridging

members

48 and 49 in the manner previously explained. Specifically, the bridging member 49 interrupts the reverse start circuit; and the bridging member 48 completes a reverse holding circuit for energizing the run winding 42 of the drive m0- tor 40; which reverse holding circuit includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, S, 213, 173, 225, 42, 208, 48, 206, 202, 201, L2. The rotor 41 then accelerates into its normal running speed of about 1725 rpm. in the reverse direction; thereby to effect spinning of the spin tub 20 at its normal speed of about 640 r.p.rn. to produce a normal water-extraction action upon the clothes therein. The rinse water spun from the spin tub 20 is caught in the drain tub 15 and pumped to the previously mentioned drain plumbing.

Subsequently, after a time interval of 2 minutes, the operating shaft 51 is rotated into position #41, whereby the control cam 2B actuates the switch spring MP to open the switch spring S to interrupt the reverse holding circuit for the run winding 42 of the drive motor 40, so that the rotor 41 stops to terminate the spinning of the spin tub 20. Also, the device 46 resets the bridging

members

48 and 49 into their back positions, as shown in FIG. 8.

After a time interval of 1 minute, the operating shaft 51 is rotated into position #42, whereby the control cam 5B actuates the switch spring F2 to close the switch spring BD, so as to complete a circuit for energizing the bleach solenoid 35a. This circuit includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, 35a, 209, BD, F2, 206, 202, 201, L2.

Also, in position #42 of the operating shaft 51, the control cam 1B actuates the switch spring C2 to close the switch spring CR, thereby to complete a circuit for energizing the hot solenoid 27a and also a circuit for energizing the cold solenoid 28a, whereby both the hot water valve 27 and the cold water valve 28 are opened to effect the introduction of warm water via the tube 26 into the spin tub 20, in the manner previously explained. The circuit for energizing the hot solenoid 27a includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, 27a, 204, 163, 203, HR, C1, 202, C2, CR, 205, 48, 206, 202, 201, L2; and the circuit for energizing the cold solenoid 28a includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, 28a, 202, C2, CR, 205, 48, 206, 202, 201, L2.

After a time interval of 4 minutes, the operating shaft 51 is rotated into position #46, whereby the control cam 5B actuates the switch spring F2 to close the switch spring NF, thereby to complete forward start and run circuits for respectively energizing the start and run

windings

44 and 42 of the drive motor 40. The forward start circuit mentioned includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, W, 211, 143, 225, 49, 215, J1, S2, 214, 44, 216, S4, K2, 208, 184, 183, 185, 210, NF, F2, 202, 201, L2; and the forward run circuit mentioned includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, W, 211, 143, 225, 42, 208, 184, 183, 185, 210, NF, F2, 206, 202, 201, L2. The drive motor 40 starts rotating its rotor 41 in the forward direction; whereby the device 46 actuates the bridging members 48- and 49 in the manner previously explained. Specifically, the bridging member 49 opens its back contacts to interrupt the start circuit for the start winding 44. The bridging member 48 opens its back contacts to interrupt the circuits for the hot solenoid 27a and the cold solenoid 28a, whereby the hot water valve 27 and the cold water valve 28 are returned to their closed positions to cut-off the supply of warm water to the spin tub 20. Also, the bridging member 48 completes a forward holding circuit for energizing the run winding 42 of the drive motor 40; this forward holding circuit including the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, W, 211, 143, 225, 42, 208, 48, 206, 202, 201, L2. Closure of the forward holding circuit effects continued energization of the run winding 42, so that the rotor 41 accelerates on into its normal running speed of about 1725 r.p.m. in the forward direction in order to effect oscillation of the agitator 22 at its normal rate of about 64 cycles per minute to produce a deep agitated rinsing action upon the clothes suspended in the warm water in the spin tub 20 in the usual manner. It is noted that the hot water valve 27 and the cold water valve 28 were opened in position #42 of the operating shaft 51 and were closed in position #46 of the operating shaft 51, whereby warm water was introduced into the spin tub 20 during a time interval of 4 minutes, so as to produce a normal fill of warm water there for use in the final rinse cycle.

Also, in position #46 of the operating shaft 51, the control cam 5B actuates the switch spring F2 to open the switch spring BD, so as to interrupt the circuit for the bleach solenoid 35a, thereby to cycle the bleach dispenser 35, with the result that a measured charge of the liquid bleaching agent is introduced via the tube 36 into the spin tub 20.

After a time interval of 1 minute, the operating shaft 51 is rotated into position #47, whereby the control cam 3B actuates the switch spring FL to close the switch spring ML, thereby to complete a circuit for energizing the hot solenoid 27a and also a circuit for energizing the cold solenoid 28a, whereby both the hot water valve 27 and the cold water valve 28 are opened to effect the introduction of warm water via the tube 26 into the spin tub during oscillation of the agitator 22, so as to produce overflow of the warm water from the spin tub 20 and the consequent deep overflow agitated rinsing action upon the clothes in the spin tub 20. The circuit for energizing the hot solenoid 27a includes the elements L1, 60, 226, P3,

B1, 223, 154, 218, P5, SS, 217, P6, E, 212, 27a, 204,

163, 203, HR, C1, 202, C2, CR, 205, MC, PR, 206, 202, 201, L2; and the circuit for energizing the cold solenoid 280 includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, 28a, 202, C2, CR, 205, MC, PR, 206, 202, 201, L2.

After a time interval of 2 minutes, the operating shaft 51 is rotated into position #49, whereby the control cam 1B actuates the switch spring C2 to open the switch spring C2, thereby to interrupt the circuits for the hot solenoid 27a and the cold solenoid 28a, with the result that the hot water valve 27 and the cold water valve 28 are returned .into their closed positions to terminate the supply of warm After a time interval of 1 minute, the operating shaft 51 is rotated into position #50, whereby the control cam 2B actuates the switch spring MP to open the switch spring W to interrupt the forward holding circuit for the run winding 42 of the drive motor 40, so that the rotor 41 stops to terminate the deep agitated rinsing action. Also, the device 46 resets the bridging

members

48 and 49 into their back positions, as shown in FIG. 8.

After a time interval of 1 minute, the operating shaft 51 is rotated into position #51, whereupon the control cam B actuates the switch spring MP to close the switch spring S, thereby to complete reverse start and run circuits for respectively energizing the start and run

windings

members

48 and 49 in the manner previously explained. Specifically, the bridging member 49 interrupts the reverse start circuit; and the bridging member 48 completes a reverse holding circuit for energizing the run winding 42 of the drive motor 40; which reverse holding circuit includes the elements L1, 60, 226, P3, B1, 223, 154, 218, P5, SS, 217, P6, E, 212, MP, S, 213, 173, 225, 42, 208, 48, 206, 202, 201, L2. The rotor 41 then accelerates into its normal running speed of about 1725 rpm. in the reverse direction; thereby to effect spinning of the spin tub 20 at its normal speed of about 640 rpm. to produce a normal water-extraction action upon the clothes therein. The rinse water spun from the spin tub 20 is caught in the drain tub 15 and pumped to the previously mentioned drain plumbing.

Subsequently, after a time interval of 7 minutes, the operating shaft 51 is rotated into position #58, whereby the control cam 2B actuates the switch spring MP to open the switch spring S to interrupt the reverse holding circuit for the run winding 42 of the drive motor 40, so that the rotor 41 stops to terminate the final spinning of the spin tub 20. Also, the device 46 resets the bridging

members

48 and 49 into their back positions, as shown in FIG. 8.

Also, in position #58 of the operating shaft 51, the control cam 2T actuates the switch spring P6 to close the switch spring BP, so as to complete a by-pass circuit for operating the time motor TM independently of the position of the line switch 60; this circuit includes the elements L1, BP, P6, 217, SS, P5, 218, 154, 223, B1, P3, 226, TM, 206, 202, 201, L2. In the subsequent rotation of the operating shaft 51 between position #58 and position #62, the pin 62 rides under the reset spring 63, as illustrated in FIGS. 3 and 4; whereby the reset spring 63 acting upon the pin 62 forces the operating shaft 51 to move axially inwardly toward the front wall of the backsplash 29 (downwardly as shown in FIG. 4); whereby the operating shaft 51 is moved axially from its axial start position back into its axial stop position. This resetting of the operating shaft 51 back into its axial stop position effects opening of the line switch 60.

At this time, the operating circuit for the timer motor TM is maintained by virtue of the closed position of the switch spring P6 with respect to the switch spring BP. Thus, rotation of the operating shaft 51 is continued so that the same is rotated through position #62 and back into position #1, the rotary start position of the operating shaft 51. In position #1, the operating shaft 51 causes the control cam 2T to actuate the switch spring P6 to open the switch spring ,BP and to close the switch spring E. Opening of the switch springs P6, BP interrupts the operating circuit for the timer motor TM, so as to arrest further rotation of the operating shaft 51 when it is in position #1. At this time the operating shaft 51 occupies both its axial stop position and its rotary start position;' the circuits are back into the conditions illustrated in FIGS. 6, 7 and 8; and the preset basic program has been carried out by the program controller 50 on a timed basis. At this time, the operator may open the top door 14 and remove the clothes from the spin tub 20, since the washing and Water-extracting actions have been performed thereupon in the machine in the basic program described.

Consider now the presetting of a first modified program, modified with respect to the basic program in the particular that the desired time interval of oscillation of the agitator 22 in the first wash cycle is 7 minutes, instead of 10 minutes. The presetting of this first modified program is fundamentally the same as that previously described in conjunction with the presetting of the basic program, except that in this case, the operator rotates the manual dial 192 into its 7-minutes position. The operator then manually pulls the control dial 52 outwardly with respect to the front wall of the backsplash 29 into its axial start position. At this time, the operating shaft 51 occupies position #1; and the line switch 60 is closed in response to movement of the operating shaft 51 into its axial start position.

The initial portion of this first modified program is the same as that of the basic program as described above; however, when the operating shaft 51 is rotated into position #7, the control cam 4B actuates the switch spring P2 to close the switch spring A1, thereby to complete a primary circuit for energizing the position advance motor PA. The primary circuit includes the elements L1, 60, 226, P2, A1, 219, 195, 193, 194, 224, PA, 206, 202, 201, L2. The position advance motor PA drives the operating shaft 51 rapidly from position #7 to position #10, whereby the control cam 4B actuates the switch spring P2 to open the switch spring A1 to interrupt the primary circuit for the position advance motor PA. The operating position advance motor PA drives the operating shaft through the

elements

56', 57', 58', 54, 59, 59, 54, 55; and the element 58 accommodates the overrunning and rapid drive of the shaft 54 with respect to the gear box 57 that is driven by the timer motor TM on a timed basis.

The remainder of the first modified program is the same as that of the basic program as previously described; and it will be understood that the present first modified program comprises a first wash time interval of 7 minutes.

Consider now the presetting of a second modified program, modified with respect to'the basic program in the particular that the desired time interval of oscillation of the agitator 22 in the first wash cycle is 4 minutes instead of 10 minutes. The presetting of this second modified program is fundamentally the same as that previously described in conjunction with the presetting of the basic program, except that in this case, the operator rotates the manual dial 192 into its 4-minutes position. The operator then manually pulls the control dial 52 outwardly with respect to the front wall of the backsplash 29 into its axial start position. At this time, the operating shaft occupies position #1; and the line switch 60 is closed in response to movement of the operating shaft 51 into its axial start position.

The initial portion of this second modifiedprogram is the same as that of the basic program, as previously described; however, when the operating shaft is rotated into position #7, the control cam 4B actuates the switch spring P2 to close the switch spring A1, thereby to complete the previously traced primary circuit for energizing the position advance motor PA, with the result that the operating shaft 51 is rapidly rotated from position #7 into position #10. In position #10 of the operating'shaft 51 the control cam 4B actuates the switch spring P2 to open the switch spring A1 and to close the switch spring A2.

20 Opening of the switch spring A1 interrupts the primary circuit for the position advance motor PA, while closing of the switch spring A2 completes a secondary circuit for energizing the position advance motor PA. This secondary circuit includes the elements L1, 60, 226, P2, A2, 220, 196, 193, 194, 224, PA, 206, 202, 201, L2. The position advance motor PA then drives the operating shaft 51 rapidly from position #10 to position #13, whereby the control cam 4B actuates the switch spring P2 to open the switch spring A2 to interrupt the secondary circuit for the position advance motor PA. Thus, it will be understood that the present second modified program comprises a first wash time interval of 4 minutes.

The intermediate portion of the second modified program is the same as that of the basic program; however when the operating shaft 51 is rotated into position #53, the control cam 4B actuates the switch P2 to close the switch spring A2 to complete the secondary circuit for energizing the position advance motor PA, with the result that the operating shaft 51 is rapidly rotated from position #53 into position #57. In position #57 of the operating shaft 51 the control cam 4B actuates the switch spring P2 to open the switch spring A2, so as to interrupt the secondary circuit for the position advance motor PA. Thus, it will be understood that the present second modified program comprises a final spin time interval of 3 minutes, instead of 7 minutes.

The conclusion of the second modified program is the same as that of the basic program as previously described.

Consider now the presetting of a third modified program, modified with respect to the basic program in the particular that only a partial fill of water, instead of a normal fill of water, is desired in the spin tub 20. The presetting of this third modified program is fundamentally the same as that previously described in conjunction with the presetting of the basic program, except that in this case, the opera-tor rotates the manual dial 182 into its small load position, and then manually pulls the control dial 52 outwardly with respect to the front wall of the backsplash 29 into its axial start position. At this time, the operating shaft occupies position #1; and the line switch 60 is closed in response to movement of the operating shaft 51 into its axial start position.

The present third modified program is fundamentally the same as the basic program, except that in each of the four instances in which the spin tub 20 is filled with water, the drive motor 40 is started in the forward direction after the expiration of a fill time interval of 3 minutes, instead of after the normal fill time interval of 4 minutes. This is accomplished in each instance (in positions #4, #23, #35 and #45 of the operating shaft 51) by operation of the control cam 3B to actuate the switch spring FL to close the switch spring PF. Closure of the switch springs FL, PF connects the conductor 208 to the conductor i207 and via the

elements

186, 183, to the conductor 208, when the manual dial 18-2 occupies its small load position; whereby the forward start and run circuits for respectively energizing the start and run

windings

44 and 42 are completed to initiate forward starting of the drive motor 40; with the result that the device 46 is operated to actuate the bridging member 48 to open its back contacts, so as to interrupt the circuits for the hot solenoid 27a or for both the hot solenoid 27a and the cold solenoid 28a, as previously explained.

Thus, in the present third modified program the drive motor 40 is started 1 minute early with respect to the basic program, so that the water cut-off occurs early to provide the spin tub 20 with only a partial fill of water. Specifically, in the present third modified program each water fill time interval is 3 minutes, instead of 4 minutes, as in the basic program.

This present third modified program is otherwise the same as the basic program as previously described.

gram, modified with respect to the basic program in the particular that an extra fill of water, instead of a normal fill of water, is desired in the spin tub 20. The presetting of this fourth modified program is fundamentally the same as that previously described in conjunction with the presetting of the basic program, except that in this case, the operator rotates the manual dial 182 into its large load position, and then manually pulls the control dial 52 outwardly with respect to the front wall of the backsplash 29 into its axial start position. At this time the operating shaft occupies position #1; and the line switch 60 is closed in response to movement of the operating shaft 51 into its axial start position.

The present fourth modified program is fundamentally the same as basic program, except that in each of the four instances in which the spin tub 20 is filled with water, the drive motor 40 is started, in the forward direction after the expiration of a fill time interval of minutes, instead of after the normal fill time interval of 4 minutes. This is accomplished in each instance (in positions #6, #25, #37 and #47 of the operating shaft 51) by operation of the control cam 3B to actuate the switch spring FL to close the switch spring ML. Closure of the switch springs FL, ML connects the conductor 208 directly to the conductor 208, when the manual dial '182 occupies its large loa position; whereby the forward start and run circuits for respectively energizing the start and run

windings

44 and 42 are completed to initiate forward starting of the drive motor 40; with the result that the device 46 is operated to actuate the bridging member 48 to open its back contacts, so as to interrupt the circuits for the hot solenoid 27a, or for both the hot solenoid 27a and the cold solenoid 28a, as previously explained.

Thus in the present fourth modified program the drive motor 40 is started 1 minute late with respect to the basic program, so that the water cut-01f occurs late to provide the spin tub 20 with an extra fill of water. Specifically, in the present fourth modified program each water fill time interval is 5 minutes, instead of 4 minutes, as in the basic program.

This present fourth modified program is otherwise the same as the basic program, as previously described.

Consider now the presetting of a fifth modified program, modified with respect to the basic program in the particular that the second Wash is to be omitted. The presetting of this fifth modified program is fundamentally the same as that previously described in conjunction with the presetting of the basic program, except that in this case, in the control switch 110, the pushbutton 111, instead of the pushbutton 112, is depressed; and thereafter the operator manually pulls the control dial 52 outwardly into its axial start position. At this time, the operating shaft 51 occupies position #1; and the line switch 60 is closed in response to movement of the operating shaft 51 into its axial start position.

The initial portion of this fifth modified program is the same as that of the basic program as previously described; however, when the operating shaft 51 is rotated into position #19, the control cam ST actuates the switch spring P3 to close the switch spring A3, thereby to complete a tertiary circuit for energizing the position advance motor PA. This tertiary circuit includes the elements L1, 60, 226, P3, A3, 222, 113, 224, PA, 206, 202, 201', L2. The position advance motor PA rotates the operating shaft 51 rapidly from position #19 into position #30. In position #30 of the operating shaft 51, the control cam ST actuates the switch spring P3 to open the switch spring A3, so as to interrupt the tertiary circuit for the position advance motor PA.

The remainder of the fifth modified program is the same as that of the basic program as previously described; and it will be understood that in the present fifth modified program the second wash is omitted entirely.

Consider now the presetting of a sixth modified program, modified with respect to the basic program in the particular that the bonus rinse (the first rinse) is to be omitted. The presetting of this sixth modified program is fundamentally the same as that previously described in conjunction with the presetting of the basic program, except that in this case, in the control switch the pushbutton 151, instead of the pushbutton 152, is depressed; and thereafter the operator manually pulls the control dial 52 outwardly into its axial start position. At this time, the operating shaft 51 occupies position #1; and the line switch 60 is closed in response to movement of the operating shaft 51 into its axial start position.

The initial portion of this sixth modified program is the same as that of the basic program as previously described; however, when the operating shaft 51 is rotated into position #31, the control cam 3T actuates the switch spring P4 to close the switch spring A4, thereby to complete a quternary circuit for energizing the position advance motor PA. This quaternary circuit includes the elements L1, 60, 226, P3, B1, 223, 153, 221, P4, A4, 224, PA, 206, 202, 201 L2. The position advance motor PA rotates the operating shaft 51 rapidly from position #31 into position #41. In position #41 of the operating shaft 51 the control cam 3T actuates the switch spring P4 to open the switch spring A4 so as to interrupt the quternary circuit for the position advance motor PA.

The remainder of the sixth modified program is the same as that of the basic program as previously described; and it will be understood that in the present sixth modified program the bonus rinse is omitted entirely.

Consider now the presetting of a seventh modified program, modified with respect to the basic program in the particular that warm water, instead of hot water, is desired in the first wash cycle. The presetting of this seventh modified program is fundamentally the same as that previously described in conjunction with the presetting of the basic program, except that in this case, in the control switch 120 the pushbutton 122, instead of the pushbutton 121, is depressed prior to the manual operation of the control dial 52 into its axial start position, in the manner previously explained. In this case, the depressed pushbutton 122 in the control switch 120 connects the conductor 204 to the conductor 201 at the switch spring 123, so that in the program, at positions #1 to #5, inclusive, of the operating shaft 51, the operation of the control cam 6B to close the switch spring MC to the switch spring H effects the energization of the cold solenoid 28a in parallel with the hot solenoid 27a, since at these positions noted, the control cam 7B actuates the switch spring C1 to close the switch spring CW. The energization of the hot solenoid 27a, together with the cold solenoid 28a, effects the introduction of warm water, instead of hot water, into the spin tub 20 via the tube 26 in the two corresponding fill sections of the first wash cycle and the second wash cycle, in the manner previously explained.

The remainder of the seventh modified program is the same as that of the basic program as previously described; and it will be understood that in the present seventh modified program the spin tub 20 is filled with hot water for the second wash.

Consider now the presetting of an eighth modified program, modified with respect to the basic program in the particular that cold water, instead of warm water, is desired in each of the two rinse cycles. The presetting of this eight modified program is fundamentally the same as that previously described in conjunction with the presetting of the basic program, except that in this case, in the control switch the pushbutton 162, instead of the pushbutton 161, is depressed prior to the manual operation of the control dial 52 into its axial start position, in the manner previously explained. In this case, the depressed pushbutton 162 in the control switch 160 brings about the disconnection of the conductor 204 from the conductor 203, at the switch 163, so that in the program, at positions #32 to #36, inclusive, and #42 to #48, inclusive, of the operating shaft 51., the operation of the control cam 1B to close the switch spring CR to the switch spring C2 effects the energization of only the cold solenoid 28a, notwithstanding the fact that at these positions noted, the control cam 7B actuates the switch spring C1 to close the switch spring HR. The hot solenoid 27a is not energized in parallel with the cold solenoid 28a in the two sets of positions noted, since the conductor 204 is disconnected from the conductor 203 at the switch spring 163 in the control switch 160 by virtue of the depressed pushbutton 161 thereof.

The remainder of the eighth modified program is the same as that of the basic program as previously described; and it will be understood that in the present eighth modified program, the spin tub 20 is filled with cold rinse water for both the bonus rinse and the final rinse.

Consider now the presetting of a ninth modified program, modified with respect to the basic program in the particular that a short quiescent soaking phase of the clothes suspended in the wash water in the spin tub 19a is desired in the intermediate portion of the first wash cycle. The presetting of the ninth modified program is fundamentally the same as that previously described in conjunction with the presetting of the basic program, except that in this case, in the control switch 130 the pushbutton 131, instead of the pushbutton 132, is depressed prior to the manual operation of the control dial 52 into its axial start position in the manner previously explained. In this case, the depressed pushbutton 131 in the control switch 130 opens the switch spring 133 to disconnect the conductor 218 from the conductor 217 for a purpose more fully explained below. Operation of the timer motor 55 is initiated in position #1 of the operating shaft 51; and subsequently in position of the operating shaft 51 forward rotation of the rotor 44 of the drive motor 40 is initiated in the manner previously explained. Thereafter, when the operating shaft 51 is rotated into position #7, the control cam 1T actuates the switch spring P5 to open the switch spring SS, thereby to disconnect the conductor 218 from the conductor 217; whereby at this time, the conductor 218 is totally disconnected from the conductor 217 by virtue of the open switch spring 133 of the depressed pushbutton 131 in the control switch 130, with the result that the previously traced forward holding circuit for the run winding 42 of the drive motor 40 is interrupted causing the rotor 41 to stop, thereby to arrest the oscillation of the agitator 22 and the consequent first washing action thereof in the spin tub 20 at this time. However, the timer motor TM continues to oper ate and after a time interval of about 6 minutes, the operating shaft 51 is rotated into position #13, in order to cause the control cam IT to actuate the switch spring P5 to close the switch spring SS. The closure of the switch springs P5, SS, recompletes the previously traced forward start and run circuits for the start and run

windings

44 and 42 of the drive motor 40, with the result that the rotor 41 thereof is again started and rotated in the forward direction, so as again to initiate oscillation of the agitator 22, so as again to effect the first washing action in the spin tub 20. The first washing action continues when thus initiated in position #13 of the operating shaft 51 for a time interval of about 2 minutes, whereupon the operating shaft 51 is rotated into position #15, whereby again the forward holding circuit for the run winding 42 of the drive motor 40 is interrupted as a consequence of the action of the control cam 2B in actuating the switch spring MP to open the switch spring W. The remainder of this ninth modified program is identical to that previously described in conjunction with the basic program and is not repeated in the interest of brevity.

Reviewing this ninth modified program, the wash cycle therein is characterized by a first phase of a time duration of 4 minutes in which hot water is filled into the spin tub 20, by a second phase of a time duration of 2 minutes in which the agitator 22 is oscillated, by a third phase of a time duration of 6 minutes in which the agitator 22 is at rest and the clothes suspended in the wash water in the spin tub 22 are subjected to a corresponding quiescent soaking action, by a fourth phase of a time duration of 2 minutes in which the agitator 22 is oscillated, and by a fifth phase of a short time duration of 3 minutes in which the spin tub 20 is spun in order to expel the wash water from the spin tub 20 and from the clothes contained therein.

Also, in conjunction with the presetting of the ninth modified program, it is noted that the control switch 190 should be set into its IO-minutes position, when the pushbutton 131 of the control switch occupies its depressed position, so as to insure ample time of 10 minutes in the first wash cycle to carry out the required short quiescent soaking phase of 6 minutes, as described above.

Consider now the presetting of a tenth modified program, modified with respect to the basic program in the particular that the agitator 22 is to be oscillated at its gentle rate of 45 cycles per minute, instead of at its normal rate of 64 cycles per minute, each time oscillation thereof is initiated in the program, and specifically in the first wash cycle, in the second wash cycle, in the bonus rinse cycle and in the final rinse cycle. In this case, in the control switch the pushbutton 142, instead of the pushbutton 141, is depressed prior to the manual operation of the control dial 52 into its axial start position. The depressed pushbutton 142 effects closing at the switch spring 44 of the conductor 211 to the conductor 227, and opening at the switch spring 143 of the conductor 211 from the conductor 225.

In this case starting of the drive motor 40, by energization of the 4-pole start winding 44 in the forward direction and energization of the 4-pole run winding 42, is the same in each instance, as previously explained. However, when the centrifugal device 46 is operated at about 60% of the normal running speed of the 4-pole run winding 42, a circuit change is made wherein the 6-pole run winding 43 is substituted for the 4-pole run winding 42, with the result that the rotor 41 runs at a slow speed of about 1140 r.p.m. in the forward direction, so as to cause oscillation of the agitator 122 at its rate of about 45 cycles per minute, and the consequent production thereby of a gentle washing action upon the clothes suspended in the water in the spin tub 20.

Specifically, the device 46 actuates the bridging member 49 to open its back contacts, so as to open the conductor 227 from the conductor 215 in order to deenergize the 4-pole start winding 44, and so as to open the conductor 227 from the conductor 225 in order to deenergize the 4-pole run winding 42. Also, the device 46 actuates the bridging member 49 to close its front contacts, so as to close the conductor 227 to the conductor 229 in order to energize the 6-pole run winding 43. The fragmentary portion of the circuit mentioned for energizing the 4-pole run winding 42 includes the elements L1, 211, 144, 227, 49 and its back contacts, 225, 42, 208, L2; and the fragmentary portion of the circuit mentioned for energizing the 6-pole run winding 43 includes the elements L1, 211, 144, 227, 49 and its front contacts, 43, 208, L2.

This tenth modified program is otherwise the same as the basic program as previously described.

Consider now the presetting of an eleventh modified program, modified with respect to the basic program in the particular that the spin tub 20 is spun at its gentle speed 420 r.p.m., instead of at its normal speed of 640 r.p.m., each time spinning thereof is initiated in the program, and specifically in the first wash cycle, in the second wash cycle, in the bonus rinse cycle and in the final rinse cycle. In this case, in the control switch 170, the pushbutton 172, instead of the pushbutotn 171, is

depressed prior to the manual operation of the control dial 52 into its axial start positions. The depressed pushbutton 172 effects closing at the switch spring 174 of the conductor 213 to the conductor 227 and opening at the switch spring 173 of the conductor 213 from the conductor 225.

In this case, starting of the drive motor 49, by energization of the 4-pole start winding 44 in the reverse direction and energization of the 4-pole run winding 42, is the same in each instance, as previously explained. However, when the centrifugal device 46 is operated at about 60% of the normal running speed of the 4-pole run winding 42, a circuit change is made wherein the 6-pole run winding 43 is substituted for the 4-pole run winding 42, with the result that the rotor 41 runs at its slow speed of about 1140 rpm. in the reverse direction, so as to cause spinning of the spin tub at its speed of about 420 rpm, and the consequent production thereby of a gentle water-extraction action upon the clothes therein.

Specifically, the device 46 actuates the bridging member 49 to open its back contacts, so as to open the conductor 227 from the conductor 215 in order to deenergize the 4-pole start winding 44, and so as to open the conductor 227 from the conductor 225 in order to deenergize the 4-pole run winding 42. Also, the device 46 actuates the bridging member 49 to close its front contacts, so as to close the conductor 227 to the conductor 229 in order to energize the 6-pole run winding 44. The fragmentary portion of the circuit mentioned for energizing the 4-pole run winding 42 includes the elements L1, 213, 174, 227, 49 and its back contacts, 225, 42, 2&3, L2; and the fragmentary portion of the circuit mentioned for energizing the 6-pole run winding 43 includes the elements L1, 213, 174, 227, 49 and its front contacts, 43, 208, L2.

This eleventh modified program is otherwise the same as the basic program, as previously described.

By way of review, it is noted that the first wash cycle may be carried out employing either hot water or warm water depending upon the positions of the pushbuttons 121 and 122 of the control switch 120. On the other hand, if the second wash cycle is included in a program, as established by operation of the pushbutton 112 of the control switch 110, it is always carried out employing hot water. The bonus rinse cycle may be selectively included or excluded with respect to a program, as determined by operations of the

pushbuttons

152 and 151 of the control switch 150, but if it is included, it is always carried out with water having the same temperature as that preselected for the final rinse cycle, as established by the positions of the

pushbuttons

161 and 162 of the control switch 160, which water may be warm or .cold, as previously explained.

In view of the foregoing explanation of the presetting of the basic program and the presetting of the eleven individual modified programs, it will be understood that two or more of the modified programs may be preset simultaneously, when such modified programs are not mutually inconsistent with each other. However, there is never any conflict in the setting of the modified programs mentioned by virtue of the interlocks incorporated in the various ones of the control switches 110, 120, 130, 140, 150, 169 and 170 of the pushbutton type, and by virtue of the fact that the control switches 180 and 190 are of the rotary type.

In view of the foregoing, it is apparent that there has been provided in a clothes washing machine of the automatic type, an improved program controller arrangement and improved manually operable program setting arrangements in order to achieve a wide variety of desired programs selectively including one or two wash cycles, one or two rinse cycles, a quiescent soaking phase in the first wash cycle, any one of three wash time intervals in the first wash cycle, either of two spin time intervals in 26 the final rinse cycle, either of two wash water temperatures, either of two rinse water temperatures, any one of three volumes of fill of water in the tub, either a normal or a gentle washing action, and either a normal or a gentle water-extraction action. Furthermore, the inclusion or exclusion of various ones of the cycles in the programs preset causes the programs to consume a maximum time interval of 57 minutes or a minimum time interval of 25 minutes; and in the arrangement of the program controller, the timer motor and the position advance motor are coordinated in their operations, so that the total time interval of operation of the program controller is only that required by the particular program preset.

Further, the program controller is of improved construction and arrangement, including the two electric motors for selectively rotating the operating shaft thereof in the given direction respectively at the low speed and on a timed basis and at the high speed, and the drive arrangement for preventing interference between the two motors.

While there has been described what is at present considered to be the preferred embodiment of the invention, it will be understood that various modifications may be made therein, and it is intended to cover in the appended claims all such modifications as fall within the true spirit and scope of the invention.

What is claimed is:

1. In an automatic clothes washing machine including a tub adapted to receive clothes to be processed, and mechanism selectively operative to subject the clothes in said tub to a plurality of predetermined clothes processing programs respectively composed of difierent combinations of a number of predetermined clothes processing cycles, wherein a first of said processing programs includes a given processing cycle and a second of said processing programs excludes said given processing cycle; the combination comprising a program controller including electric motor means for operating the same from a start position sequentially through a plurality of control positions and then through a return position and then through a reset position and thence back into its start position, first and second circuits for operating said motor means at a low speed and on a timed basis, a third circuit for operating said motor means at a high speed, a line switch, manually operable means for closing said line switch, means controlled by operation of said controller into its reset position for opening said line switch, closing of said line switch completing said first operating circuit and opening of said line switch interrupting said first operating circuit, a return switch, means controlled by operation of said controller into its return position for closing said return switch and controlled by operation of said controller into its start position for opening said return switch, closing of said return switch completing said second operating circuit and opening of said return switch interrupting said second operating circuit, a circuit network for selectively operating said mechanism and having a plurality of circuit settings respectively corresponding to said predetermined clothes processing programs, wherein a first of said circuit settings corresponds to said first processing program and a second of said circuit settings corresponds to said second processing program, a plurality of manually settable devices for selectively presetting said circuit network into said circuit settings, means governed jointly by said line switch in its closed position and by operation of said controller through said control positions for selectively controlling said circuit network in a preset one of said circuit settings to produce the corresponding one of said processing programs in said machine, said control positions being arranged in a number of groups respectively corresponding to said processing cycles, whereby a given group of said control positions corresponds to said given processing cycle, an advance switch, means controlled by operation of said controller into said given group of said control positions for closing said advance switch and controlled by operation of said controller out of said given group of said control positions for opening said advance switch, and means governed jointly by said line switch in its closed position and by said circuit network in said second circuit setting and by closing of said advance switch for completing said third operating circuit.

2. The clothes washing machine combination set forth in claim 1, wherein said first processing program includes two wash cycles, and said given processing cycle is one of said wash cycles.

3. The clothes washing machine combination set forth in claim 1, wherein said first processing program includes successive first and second wash cycles, and said given processing cycle is said second wash cycle.

4. The clothes washing machine combination set forth in claim 1, wherein said first processing program includes two rinse cycles, and said given processing cycle is one of said rinse cycles.

57 The clothes washing machine combination set forth in claim 1, wherein said first processing program includes successive first and second rinse cycles, and said given processing cycle is said first rinse cycle.

6. The clothes washing machine combination set forth in claim 1, wherein said electric motor means essentially comprises a first electric motor of the synchronous type that is operative to operate said controller at said low speed and on said timed basis in response to completion of either of said first and second operating circuits therefor, and a second electric motor of the synchronous type that is operative to operate said controller at said high speed in response to completion of said third operating circuit therefor.

7. In an automatic clothes washing machine including a tub adapted to receive clothes to be processed, and mechanism selectively operative to subject the clothes in said tub to a plurality of predetermined clothes processing programs respectively composed of difierent combinations of a number of predetermined clothes processing cycles, wherein a first of said processing programs includes first and second given processing cycles and a second of said processing programs includes said first given processing cycle and excludes said second given processing cycle and a third of said processing programs excludes said first given processing cycle and includes said second given processing cycle and a fourth of said processing programs excludes said first given processing cycle and said second given processing cycle; the combination comprising a program controller including electric motor means for operating the same from a start position sequentially through a plurality of control positions and then through a return position and then through a reset position and thence back into its start position, first and second circuits for operating said motor means at a low speed and on a timed basis, a third circuit for operating said motor means at a high speed, a line switch, manually operable means for closing said line switch, means controlled by operation of said controller into its reset position for opening said line switch, closing of said line switch completing said first operating circuit and opening of said line switch interrupting said first operating circuit, a return switch, means controlled by operation of said controller into its return position for closing said return switch and controlled by operation of said controller into its start position for opening said return switch, closing of said return switch completing said second operating circuit and opening of said return switch interrupting said second operating circuit, a circuit network for selectively operating said mechanism and having a plurality of circuit settings respectively corresponding to said predetermined clothes processing programs, wherein a first of said circuit settings corresponds to said first processing program and a second of said circuit settings corresponds to said second processing program and a third of said circuit settings corresponds to said third processing program and a fourth of said circuit settings corresponds to said fourth processing program, a plurality of manually settable devices for selectively presetting said circuit network into said circuit settings, means governed jointly by said line switch in its closed position and by operation of said controller through said control positions for selectively controlling said circuit network in a preset one of said circuit settings to produce the corresponding one of said processing programs in said machine, said control positions being arranged in a number of groups respectively corresponding to said processing cycles, whereby first and second given groups of said control positions respectively correspond to said first and second given processing cycles, a first advance switch, means controlled by operation of said controller into said first given group of said control positions for closing said first advance switch and controlled by operation of said controller out of said first given group of said control positions for opening said first advance switch, a second advance switch, means controlled by operation of said controller into said second given group of said control positions for closing said second advance switch and controlled by operation of said controller out of said second given group of said control positions for opening said second advance switch, means governed jointly by said line switch in its closed position and by said circuit network in either of said third and fourth circuit settings and by closing of said first advanceswitch for completing said third operating circuit, and means governed jointly by said line switch in its closed position and by said circuit network in either of said second and fourth circuit settings and by closing of said second advance switch for completing said third operating circuit.

8. The clothes washing machine combination set forth in claim 7, wherein said first processing program includes two Wash cycles and two rinse cycles, and said first given processing cycle is one of said wash cycles, and said second given processing cycle is one of said rinse. cycles.

9. In an automatic clothes washing machine including a tub adapted to receive clothes to be processed, and mechanism selectively operative to subject the clothes in said tub to a plurality of predetermined clothes processing programs each composed of a fixed number of predetermined clothes processing cycles, wherein a first of said processing programs involves a long time interval of an included first given processing cycle and a second of said processing programs involves a short time interval of said given included processing cycle; the combination comprising a program controller including electric motor means for operating the same from a start position sequentially through a plurality of control positions and then through a return position and then through a reset position and thence back into its start position, first and second circuits for operating said motor means at a low speed and on a timed basis, a third circuit for operating said motor means at a high speed, a line switch, manually operable means for closing said line switch, means controlled by operation of said controller into its reset position for opening said line switch, closing of said line switch completing said first operating circuit and opening of said line switch interrupting said first operating circuit, a return switch, means controlled by operation of said controller into its return position for closing said return switch and controlled by operation of said controller into its start position for opening said return switch, closing of said return switch completing said second operating circuit and opening of said return switch interrupting said second operating circuit, a circuit network for selectively operating said mechanism and having a plurality of circuit settings respectively corresponding to said predetermined clothes processing programs, wherein a first of said circuit settings corresponds to said first processing program and a second of said circuit settings corresponds to said second processing program, a manually settable device for selectively presetting said circuit network into said circuit settings,

Claims

1. IN AN AUTOMATIC CLOTHES WASHING MACHINE INCLUDING A TUBE ADAPTED TO RECEIVE CLOTHES TO BE PROCESSED, AND MECHANISM SELECTIVELY OPERATIVE TO SUBJECT THE CLOTHES IN SAID TUB TO A PLURALITY OF PREDETERMINED CLOTHES PROCESSING PROGRAMS RESPECTIVELY COMPOSED OF DIFFERENT COMBINATIONS OF A NUMBER OF PREDETERMINED CLOTHES PROCESSING CYCLES, WHEREIN A FIRST OF SAID PROCESSING PROGRAMS INCLUDES A GIVEN PROCESSING CYCLE AND A SECOND OF SAID PROCESSING PROGRAMS EXCLUDES SAID GIVEN PROCESSING CYCLE; THE COMBINATION COMPRISING A PROGRAM CONTROLLER INCLUDING ELECTRIC MOTOR MEANS FOR OPERATING THE SAME FROM A START POSITION SEQUENTIALLY THROUGH A PLURALITY OF CONTROL POSITIONS AND THEN THROUGH A RETURN POSITION AND THEN THROUGH A RESET POSITION AND THENCE BACK INTO ITS START POSITION, FIRST AND SECOND CIRCUITS FOR OPERATING SAID MOTOR MEANS AT A LOW SPEED AND ON A TIMED BASIS, A THIRD CIRCUIT FOR OPERATING SAID MOTOR MEANS AT A HIGH SPEED, A LINE SWITCH, MANUALLY OPERABLE MEANS FOR CLOSING SAID LINE SWITCH, MEANS CONTROLLED BY OPERATION OF SAID CONTROLLER INTO ITS RESET POSITION FOR OPENING SAID LINE SWITCH, CLOSING OF SAID LINE SWITCH COMPLETING SAID FIRST OPERATING CIRCUIT AND OPENING OF SAID LINE SWITCH INTERRUPTING SAID FIRST OPERATING CIRCUIT, A RETURN SWITCH, MEANS CONTROLLED BY OPERATION OF SAID CONTROLLER INTO ITS RETURN POSITION FOR CLOSING SAID RETURN SWITCH AND CONTROLLED BY OPERATION OF SAID CONTROLLER INTO ITS START POSITION FOR OPENING SAID RETURN SWITCH, CCLOSING OF SAID RETURN SWITCH COMPLETING SAID SECOND OPERATING CIRCUIT AND OPENING OF SAID RETURN SWITCH INTERRUPTING SAID SECOND OPERATING CIRCUIT, A CIRCUIT NETWORK FOR SELECTIVELY OPERATING SAID MECHANISM AND HAVING A PLURALITY OF CIRCUIT SETTINGS RESPECTIVELY CORRESPONDING TO SAID PREDETERMINED CLOTHES PROCESSING PROGRAMS, WHEREIN A FIRST OF SAID CIRCUITS SETTINGS CORRESPONDS TO SAID FIRST PROCESSING PROGRAM AND A SECOND OF SAID CIRCUIT SETTINGS CORRESPONDS TO SAID SECOND PROCESSING PROGRAM, A PLURALITY OF MANUALLY SETTABLE DEVICES FOR SELECTIVELY PRESETTIANG SAID CIRCUIT NETWORK INTO SAID CIRCUIT SETTINGS, MEANS GOVERNED JOINTLY BY SAID LINE SWITCH IN ITS CLOSED POSITION AWND BY OPERATION OF SAID CONTROLLER THROUGH SAID CONTROL POSITIONS FOR SELECTIVELY CONTROLLING SAID CIRCUIT NETWORK IN A PRESET ONE OF SAID CIRCUIT SETTINGS TO PRODUCE THE CORRESPONDING ONE OF SAID PROCESSING PROGRAMS IN SAID MACHINE, SAID CONTROL POSITION BEING ARRANGED IN A NUMBER OF GROUPS RESPECTIVELY CORRESPONDING TO SAID PROCESSING CYCCLES, WHEREBY A GIVEN GROUP OF SAID CONTROL POSITIONS CORRESPONDS TO SAID GIVEN PROCESSING CYCLE, AN ADVANCE SWITCH, MEANS CONTROLLED BY OPERATION OF SAID CONTROLLER INTO SAID GIVEN GROUP OF SAID CONTROL POSITIONS FOR CLOSING SAID ADVANCE SWITCH AND CONTROLLED BY OPERATION INTO SAID GIVEN GROUP OF SAID CONTROL OF SAID CONTROL POSITIONS FOR OPENING SAID ADVANCE SWITCH, AND MEANS GOVERNED JOINTLY BY SAID LINE SWITCH IN ITS CLOSED POSITION AND BY SAID CIRCUIT NETWORK IN SAID SECOND CIRCUIT SETTING AND BY CLOSING OF SAID ADVANCE SWITCH FOR COMPLETING SAID THIRD OPERATING CIRCUIT.