US2608252A

US2608252A - Domestic appliance

Info

Publication number: US2608252A
Application number: US760411A
Authority: US
Inventors: Robert R Candor
Original assignee: Motors Liquidation Co
Current assignee: Motors Liquidation Co
Priority date: 1947-07-11
Filing date: 1947-07-11
Publication date: 1952-08-26
Anticipated expiration: 1969-08-26

Description

Aug. 26, 1952 R. R; cANDoR DOMESTIC APPLIANCE 4 Sheets-Sheet l Filed July ll, 1947 www 0R. fr pofz mow 22th uro Aug. 26, 1952 R. R. cANDoR 2,608,252

DOMESTIC APPLIANCE Filed Jul-y 11, 1947 4 sheets-sheet 2 17 J1.57' los Fl G. 3

Aug. 26, 1952 R. R. cANDoR 2,608,252

DOMESTIC APPLIANCE Filed July 11, 1947 4 sheets-sheet s Aug. 26, 1952 R. R. cANDoR DOMESTIC APPLIANCE 4 Sheets-Sheet 4 Filed July l1, 1947 Patented Aug. 26, 1952 DOMESTIC APPLIANCE Robert R. Candor, Oakwood, Ohio, assignor to General Motors Corporation, Dayton, Ohio, a

corporation ofl Delaware Application July 11, 1947, Serial No.,760,4'l1

(Clj. IGI-1) 6 Claims.

This invention relates to domestic appliances, and more particularly to automatic clothes wash.- ing machines.

An object of this invention is to provide an automatic clothes washing machine which has a. filling period of time, an agitatingy period of time, and a spinning period of time,v and is provided with simple, and readily operable'means for varying any one of these periods of time independently of the otherperiod of time.

Another object of this invention is to provide an automatic washing machine having filling, agitating, and spinningy periods of time, in which the agitating period of time may be shortened independently of either the fillingV period orthe spinning period. v

Another object of this invention is to provide an automatic washing machine having a plurality of agitating periods of time interspersed within filling. and spinning periods, and in which one of the agitating periods of time may be varied independently, of another agitating period..

Further objects and advantages of the present invention will be apparentv fromY the following description, reference being had to the accom.-

panying drawings, wherein a preferred form of the present invention is clearly shown.

In the drawings:

Fig. l is adiagrammatic representation, partly in vertical cross-section, of the washing machine and itsA controls;

If"ig..2 isa front view of part of Fig. l;

Fig. 3 is a diagrammatic representation of the timer controLin combination with the electrical elements ofthe machine;

` Fig. 4 is aV diagrammatic representation of the timer in combination with the switches used to select. the fractional time and the particular operations to beshortened;

Fig. 51s a front diagrammatic View of the control dial of the timer, indicating` the actuation of. thev contacts Fig. 6 is a; diagrammatic representation of the multiple speedv windings of thev timer motor;v

Fig. 1 is a, diagrammatic representation, similar to Fig. 3, but showinga modified form; and' Fig. 8, is a diagrammatic representation7 of a iurther modification.

The washing machine without" shortened jill, agitationy or spiny A washing machine includes` a tub, 50, which may be centrifugally rotated to dry the clothes. An agitator 5I may be placed inside of the tub, for agitating the clothes prior to the centrifugal 2 action. Thetub 50 and agitator 5l are actuated through the medium of a transmission 52, which is, actuated by av motor 53, the transmission being. controlled by a solenoid 511. When the motor 53 is energized, together with the solenoid 54, the agitator is not reciprocated; but the tub Sillv is centrifugally rotated at suiiicient speed to wri'ng the clothes. When the motor 53 is energized while the solenoid is deenergized, the agitator 5l is reciprocated. When the solenoid 54 isv deenergized while the tub 50 is rotating, a braking action is applied to the tub 50, to stop it quickly. Any type of motor and transmission may be used for accomplishing this purpose, such, for example, as is disclosed in the patent to Kendall Clark, No. 2,422,395, granted June 17, 1947.

An access door 56 is provided for introducing the clothes and detergentV into the tub 50. A door switch 5l, hinged at I8 and closing contacts at` Il, is actuated by the rod 58 so that the contacts Il are closed whenever the door 56 is opened,l and` vice versa.

A timer 10` is provided, which controls the flow of electrical power from the lines Li and L2 to the various electrical elements ofthe washing machine. The washing machine is lled with water from the hot water connector 60 and a cold water connector 59. These connectors discharge into a thermostatic mixing valve 6 l. The hot water connector also discharges into a hot water; line 1l. The mixing valve GI discharges into a mixed water line 12. The lines 1I and 12 are controlled by

solenoid Valves

63 and 62 vrespectively, and discharge into a common outlet chamber 64'. This chamber is connected by a line 13 to a constant pressure valve 65, which maintains a constant pressure of water on the line 14, which in turn discharges through a fixed orifice 65 and a nozzle 81 at a constant flow rate into the tub' 5 0. The arrangement is such that the timer 'i0 opens the selected

solenoid valve

62 or 63 for a suflicient length of time so that the constant volume discharge of water at the nozzle El fills the tub 5B to the correct level during each filling operation. The position of the handle 8l of the selector switch 88 determinesv whether the movable contact 89 of the

switch

8,8 contacts. I5 or I6. When the handle 81 is on the indication Hot contact 89 engages l5, and thekhot Water solenoid 63 is energized for the iirstillingv operation. During the lsecond and third filling operations, the mixed water solenoid 62 is energized regardless of the p0- sition of contact 89.

acosa@ Fig. 3 shows the timer construction diagrammatically. It includes a timer motor 20 which moves a small gear 2| intermittently such as at one-half minute intervals. `This gear in turn actuates a larger gear 22, which is fixed to a rotatable shaft 23. The shaft23 carries a plurality of

rotatable cams

24, 25, 26 and 21 which are in engagement with

movable blades

28V, 29, 30 and 3| respectively, and which carry

movable contacts

6, 4, I I and 8 respectively. The

cams

24, 25, 26 and 21 have been indicated by dotted circles; but it is understood that they actually are irregularly shaped cams, so shaped that the

movable contacts

6, 4, II and 8 are actuated at selected intervals of time, as indicated in Fig. 5. Fig. shows the indications on the knob 36, which are inside of the circle 35. The numerals on the outside of circle 35 indicate the positions of the movable contacts at the various intervals of time, as the shaft 23k is rotated clockwise. The knob 35 is provided with an irregular orice 31 which fits over the irregular end 38 of the shaft 23. The knob 36 is axially secured to the shaft 23,so that, when the knob 36 is moved slightly axially, a movable contact 2 is moved into and out of Contact with stationary contact I, the movable contact 2 being carried by a movable blade 39 which has its upper end in axial engagement with the shaft 23. Whenever the knob 36 is pulled towards the operator, the contacts I and 2 areopened, and whenever the knob is pushed away from the operator, the contacts I and 2 are closed. YA suitable snap acting mechanism is provided for allowing the shaft to be placed in these two axial positions. This may take the formof a double grooved ring 40 carried by the shaft 23 in which a spring-pressed pin 4| rides, so that the ring d0 snaps from one position to the other. y v v Whenever the movable contact 8 engages contact- 9, the solenoid 54 is energized, so that the tub 50 is centrifugally rotated. However, since theswitch 51 is closed whenever the door 56 is open, and switch'i is in parallel with solenoid 54,`all electrical elements are automatically deenergiz'ed, shouldthe door 56 be open, or opened, during a period which normally is a spin period, as more fully hereinafter explained. Therefore, should the operator open the door while a lcentrifugal action is taking place, all operations are automatically stopped, including the operation of the timer. Also, if the door 56 should be left open during any previous operation, thenwhen vthe timer reaches a spin position, all operations,

including that of the timer, are automatically stopped. The machine then remains inoperative until the loperator closesa the door 56, at which time the operations ofthe machine, including the timer, are resumed when they were automatically stopped by theopen door.

Normally, when the door 56 is closed and the contacts` I and 2 are closed in the inward position of .knob 36,` theY energization of the various elements is as follows:

When 8 is on 1, one of the water solenoids 62 .or 63 (depending on the selection at 83) is energized to introduce water (hot or tepid) yinto the tub 56. The electric current flow isy from L1, I, 2, |00, 3|, 8, 1, |02, 89 and, if 81 is on hot, I5,

When 8 is on 9 current ows from L1, I, 2, |00, 3|. 8, 9, |08, |09, 54, IIO, |05, I4 I3 and Lz. This energizes the spin solenoid 54 and causes rotation of tub 50. However, should the door 56 be open, or be opened, while 8 is on 9, then, instead of causing a rotation of tub 50, all operations are stopped by the ow of current from L1, I, 2, |00, 3|, 8, 9, I8, 51, I1, solenoid III, I3 and L2. The energization o f solenoid III pulls the safety switch I3 from Id. This allows current to continue to flow through solenoid III; but disconnects all other electrical elements, 54, 63, 62, 53 and 20 from L2, thus stopping all operations, including the timer, as long as the door 53 is open and the timer is on a spin position. When the door 56 is closed, switch 51 is opened, and solenoid III is deenergized, thus allowing safety switch contacts I3 and I4 to close on each other by spring action into their normally closed position. It should be noted that this control of the door 56 over the electrical circuits can only take place during a spin position of the timer, since that is the only time that contact 8 is on 9, and is the only time that solenoid III can be energized.

When II is on I0 (which never occurs while 8 is on 1) tepid water solenoid 62 is energized. Electric current flows from L1, I, 2, II2, 30, II, I0, II3, |06, 62,I01, |05, I4, I3, to L2. The tub 50 is filled with tepid water to the correct level during such an operation.

When I I is on I2, the running winding of motor 53 is energized. Electric current fiows from Li, I, 2, II2,30, II, I2, II4, 53, II5, |05, I4, I3, to L2.-

When 4 is on 3, the timer motor 20 is energized. Electric current flows from L1, I, 2, II6, II1, 3, ,4, 29, IIS, 20, I05,I4, I3 toLz. :i

When 6 is on 5 the starting winding of motor 53 is energized. Electric current flows from L1, I, 2, I|6, II9, 5, 6, 28, |20, 53, II5, |05, I4, I3 to L2.

In the operation of the device, without shortened ll agitation or spin periods, the door 56 is opened and clothes and detergent are placed in the tub 50. The door then should be closed and the knob 36 should be pushed away from the user to close contacts I and 2 and the knob 36 should be turned clockwise from the off position S (where the timer previously had stopped) to the start position at A. Just'before reaching position A, the cams are actuated so that contact 3 closes on 4 and contact 1 closes on 8 as indicated at A'. This energizes the hot water solenoid and starts the ow of hot or tepid (as selected) water into the tub 50`to the correct level. At the same time the timer motor 20 is energized. The shaft 23,2'and knob 36 are then intermittently progressed from position A to position B, where contact 8 is moved away from 1; 6 isi'moved to 5; and II is moved to I2. This energizes the starting coil of motor 53. It also energizes the running coil of motor 53. Themotor 53 is therefore started and caused torun on the starting ruiming windings thereafter. Since the transmission solenoid 54 is deenergized, the.- agitator 5| is agitated. `After a suitable interval of time, as at C, the starting winding of thev motor 53 is deenergized by opening

contacts

5 and 6. The washing operation continues, (agitator action) for the selected number of minutes, until the position D is reached. Should the user desire a shorter washing period than the 10 minutes indicated on the timer, he may advance the knob 36 manually to a shorter period, such as to an 8, 6 or other minute period. When position D is reached

contacts

5 and 6 are closed, as are also 8 and 9. The closing of contacts 8 and 8 'energizes solenoid 54, if the door 56 is closed, and starts the-tub 50 to spin. The starting winding of the motor 53 is again energized by the closing of

contacts

5 and 6 because acceleration is necessary, and the motor is slowed down to a'speed requiring the starting winding to aid in getting the tub up to speed. However, should the door 56 beopened While the spinning operation progresses orif the door had been left open, then 4no spinning of the tub can take place, and all. operations of the machine, including that of the timer are interrupted by the opening of contacts |3 and i4 as-previously described. The spinning operation empties the water in the tubA 50 into sump |30 from whence it flows through pipe |3| and pump |32 into drain connector |33. i

As the timer continues, the position Eis reached where the starting winding is vdeenergized by the opening of

contacts

5 and 6. When the position F is reachedy contact isrmoved from 9 and from |2. This deenergizes the solenoid 54 and the motor V53 and stops the spinning of tub 50. At positionG I0 is closed on |I. This energizes the mixed water solenoid 62 and starts flow of mixed water through the nozzle lil.r TheY flow of water continues until position H, which. isV the correct length of time to fill the tub. AtH, contact is moved from I0y while

thev contacts

5 and 6, and and l2 are closed.. This stops the flow of water. and energizes. the starting andY running windings of the motor'53 to reciprocate the agitatorh5l.. At I, contact 6 is movedfrom` 5, thus deenergizing the starting winding of motor 53, the motor 53 continuing to run on the running winding. From H to J, the agitator 5l is reciprocated. At J contact 6 closes on 5 while contact 8 closes on 9.. `If the. door 56 is closed, the tub 50 starts to spin; but if the door is already open, then the tub does not spin and alloperations cease until the door is closed.. when they are resumed where they were stopped.. AtKthe starting winding is deenergized by the opening of

contacts

5 and 6. At L the spinningA operation is terminated by the opening of

contactsr

8 and 9 and and I2. At M the mixed water solenoid is opened by the closing ofv contacts |0 and `The filling operation continues until N is reached. The tub has then been iilled with tepid water. At N, contacts |0 and ||1 are opened while-5 and 6, and l| and |2 are closed. This stops the lling operation and. starts the reciprocation of the agitator, the motor 53 running on both its starting and running windings. At O the starting winding is deenergized by the opening of

contacts

5 and 6. At P the

contacts

5 and 6 are closed as are also contacts 8'and 9. This starts a spinning operation, the motor 53 running onboth windings until position Q, when the starting winding is deenergized by the opening of con- -tacts 5* and 6. At R thea spinning operation is terminated by the opening. of

contacts

8 and 9 and and I2. It should be noted that, if the door, 56 should be opened at any time during theinterval between P and R the spinning operation will be stoppedtogether with the timer. If they door had been left open beforek the reaching of. this spinningk operation, the basket will not spin-and the timer will stop.

After the spinning operation P to R, the timer continues to run until position S is reached when thecontacts 3 and 4 are opened, thus deenergizing the timer motor 20. At this time the entire washing operation is terminated and the clothes may be removed from the machine. The knob 36 remains at S until the machine is usedy again. The Vopening ofthe door 56 does not interfere with any of the. filling or agitating operations' A to D, F to J, and L to P. However, should the door 56 be open at, or be opened during, the spinning operation, all of the operations of the machine, including the timer operation, are stopped. These operations are resumed upon the closing of the door 56. This allows the user to inspect the interior of the machine at all times except when spinning is taking place. He can even inspect the machine during the spinning operation; but that operation is stopped until the door is closed.

The foregoing description of the washing machine, without shortened fill, agitation or spin starting with column l, line 1'7, is described and claimed in the copending application of Harold B. Wallis and Duane R. Neal, S. N.-56l,857, filed November 4, 1944.

The washing machine with shortened, operation of fill, agitation or spin The following are improvements made by applicant whereby any of the iilling, agitatingrand spinning operations may be shortened to any one or more fractions of the normal operations.

yThe filling, agitating and spinning operations may be shortened, with respect to the corresponding normal operations, by increasing the speed of the timer 20. For this purpose, the timer 20 may be provided with a normal speed winding 200, a higher speed winding 20|, and a highest speed winding 202. Thus three speeds are indicated; but it is to be understood that this is illustrative and any plurality of speeds may be used, By way of example, the ratio of speeds of the windings may be as 1, 3/2 and 3 respectively. This establishes a normal period of time, and period of time and a 1/3 period of time respectively. For the purpose of selectively energizing the

windings

200, 20|, and202, the lead lines 283, 204, and 205 are provided, which are selectively energized by the operation of the

solenoid armatures

206 and 207. When the solenoids are not energized, normal operation takes place; but when one or more oi the solenoids are energized, the periods of time are shortened, by increasing the speed of rotation of the timer 20, as will be more fully hereinafter pointed out. A timer having multiple speeds is disclosed in my copending application S. N. 701,116, iiled October 4, 1946, of which this application is a continuation-in-part. v

For the purpose of selecting whether the periods of time shall be shortened to 2/3 or to 1/3,A a three position switch 208 is provided. When the switch 208 is in the center position, the switch is open and neither of the

solenoid structures

206 or 201 may be energized, and therefore no period of time is shortened. When the switch Zivi is in the one-third position, shown in full lines in Fig. 3, then the solenoid structure 267 may be energized, and this will shorten any seiected period of time to 1/3 of its normal period of time, since the winding 262 would be energ-ized. When the switch 208 is moved to the two-thirds position, which is the left hand position in Fig. 3, then the selected periods of time will be shortened to 2/3 normal, because thev solenoid structure 206 wouldV be energized, and the winding 20| correspondingly would be energized.

. For the purpose of shortening the spin period, a switch 200 is provided. .This establishes a, circuit from the spin line |06, through switch- 209, switchA 2 I0 (when in low position) solenoid winding 2|| or 2|f|a (depending on the position of switch 208)* and line L2, thus raising armature 201 during thel spin period,'and shortening it to its` shortest period lby reason of the energization of' winding 20| 0r 202 of timer motorA 20.. l-Iowever, since it may be desirable not to shorten the starting period of the motor 53, a solenoid r2|2 is provided, which is energized from the linep2l3, which is connected with the starting line |20, and L2, thus preventing the energization of solenoid 2|| during the starting period of motor 53. This insures that the motor 53 is completely up to speed before its spin period is shortened- To shorten the agitation, a switch 2|4 is provided. This switch is connected through line 2 5,

with the motor running winding ||4 and establishes a circuit through either the solenoid `2|6 or 2 1, depending upon the position of switch 208. A solenoid 2|8 is interposed between the spin line and L2, which raises the solenoid switch 2| 9 during the spinning operation, thus preventing the spinning operation from being shortened by the closing of switch 2| 4, but permitting the agitation period to be shortened, since the solenoid 2 8 is not energized at that time.

To shorten the hot water filling period, a switch 220 is provided between the hot water line |03 and either of the solenoids 22| or 222 (depending on the position of switch 208). Thus the hot water filling period is shortened to 1A; or 2/3, by the closing of switch 220.

To shorten the tepid, or mixed filling period, a switch 223 is interposed between the tepid control line I3 and the

solenoids

224 and 225. Thus, depending upon the switch 203, the tepid filling period may be shortened to 2/3 or 1/3 its normal lling time.

Fig. 6 indicates diagrammatically a type of multiple speed motor that may be used for the timer 20. Thus the

multiple speed windings

200, and 202 cooperate with proper

segmental armatures

230, 23| and 232 to rotate the timer motor shaft 233 at varying speeds, as previously indicated.

In the operation of the device shown in Figs. 1 through 6, with selectively shortened periods of time for ll, agitation, or spin, the user first selectively places any one or more of the

switches

88, 208, 209, 2M, 220 and/or 223, to the desired position, as indicated in Fig. 4, and then the timer operating knob 36 may be moved to the start position, at which time the

proper solenoid

62 or 63 is energized to start the lling operation, and the timer motor 20 is energized. Depending upon the position of the switches, as heretofore described, any one of the fill, agitation or spin periods may be shortened to 1/3 or 2A, its normal time by the energization of timer windings 20| and 202 instead of 200, since the proper solenoids are energized for this purpose. It is not necessary, and it would be too involved, to trace each and every possible circuit capable of being selected, and therefore no attempt is made to indicate how these circuits are established, it being obvious from the drawings, how these circuits are established.

In Fig. 7, the operation and construction of the various devices designated by reference numerals below 200 are the same as previously described under the heading The washing machine without shortened ll, agitation or spin, or as described in the aforesaid application of Wallis and Neal. Reference numerals above 300 are used to designate improvements for shortening any selected operation. In Fig. 7 it is shown how to shorten, for example, either the first agitation, by itself. or in combination with the second and third agitationsor incombination with any other selected operation to be shortened in lieu of the second and thirdagitations.

For this purpose, a; desired number of additional timer cams 303 and 304- are added to the timershaft 2 3. For example, the cam 303 moves the contact blade 305 tothe left during the first agitationrperiod, and maintains it to the right throughout the remainder of the operations. The cam 304 vmoves the contact blade 30B to the left during the second and third agitation periods, and maintains it to the right throughout the remainder of the operations. Examples of changes in the agitation periods have been given; but it is to be understood that any other periods maybe used, such, for example, as the ll period.

The blade 305 is electrically connected to the stationary contact 301 of a switch 308, which is connected to the contact blade 29. The other stationary contact 309 of the switch 308 is connected by line 3 I 0 with one terminal of the normal winding 30| of the timer 20. The construction is such that with the switchr308 set on 309, the timer 20 operates at normal speed throughout al1 operations. When it is desired to shorten the selected operations, the switch 303 is placed on contact 301. Thereafter, during the first agitation period current flows through the blade 305 and contact 3| through line 3| la, to a faster running winding 302 of the timer 20. Thus, during the first agitation period, the timer operatesV at a faster rate and shortens the first agitation period if the switch 308 is set on 301.

' To shorten an additional operation, or additional operations, the switch 3|2 may be connected to stationary contact 3|4 and may be placed onstationarfy contact 3|3, which is con- `Ilected withblade S306. vWhen the blade 306 is to the left the timeragain operates at a faster rate, since the rfaster timer winding 302 is energized through line. 3| la. However, when the washing machine is operating at any other operation than the agitation periods, the normal timer winding 30| is energized, since current iiows from 308 through 301, 305, 3|4, 3|2, 3|3, 306, 315 and normal Winding 30|.'l This provides for normal periods of ll and spin; but shorter` periods of agitation. However, if it is only desired to shorten the first wash period and maintain the remainder of the operations normal, the switch 3|2 is placed on stationary contact 3|6, so that the timer 20 is then operated at a faster rate onlyduring the first agitation period, and thereafter energizes the normal Winding. 30| through contact 3|4. switchv 3|2, contact 3| 6, line 3|1 and winding 30|. Y

.In the operation of the modifications shown in Fig. 7,. the operator sets the switch 308 on contact 301 if he wishes to shorten the first agitation period, orplaces it on 309 if he wishes to have all operations of normalduration. In addition, he: places switch 3|2 on contact 3|3 if he wishes to shorten the second and third agitation periods, or placesthe switch 3|2 on the contact I3I|i if he wishes to maintain all`of1the operations normal, except the rst agitation. Thereafter he advances the knob 36 toA the start position and moves it axially inward, if not previously so moved, and vthereafter the'machine operates as previously described, with the exception that the rst agitation period is shortened, and the second and third agitation periods are shortened or not shortened as selected.

Fig. 8 shows aV further modification in which any oneior all of the operations may be shortened independently of .thezremainden In -this modiication vthe `timer'2ll rand the shaft 23 Yare connected with the washing machine and'wiring diagram indicated by the'reference numerals below 330 and their operation "is identical with the elements heretofore described under the heading The washing machine without shortened ll, agitation or spin or las described in the aforesaid :application of Wallis and Neal. The improvements are indicated by numerals above 396.

Thus, additional cams 35|), 35|, 352 and 353 are mounted on the timer shaft 23, and are provided, respectively, with contact blades 354 to 351 inclusive. Each of the cams 350 to 353 moves its corresponding blade to the left during its respectains it to the right during the remaining operations. The cam 35|, if it corresponds to the rst agitation, moves blade 355 -to the left during the rst agitation and maintains it to the right during the remaining operations. Cam 352, if it corresponds to the second and third agitations, moves rthe blade 356 to the left during the second and third agitations and maintains it to the right during the remaining operations. The cam 353, if it corresponds to the spin operations, moves blade 351 to the left during the spin operation, and maintains it to the right during the remaining operations. The number and character of the cams indicated is by way of example only, and the number and character may be varied as desired.

The blade 29 is electrically connected with the blade 354 by the wire 358. The

stationary contacts

359, 366 and 36| are electrically connected respectively with the

blades

355, 356 and 351. The contact 362 is connected, through

lines

363 and 364 with normal timer winding 365. Thus Whenever all of the blades 354 through 351 are to the right, the timer motor 26 operates at normal speed, since the circuit is from blade 29 through blades 354 to 351 and contacts 359 to 362, and

lines

363 and 364 to normal timer winding 365.

Selector switches 366 through 369 are connected with the stationary contacts 310 through 313 respectively. These selector switches may be applied on any one of the normaL stationary contacts 314 through 311 respectively. These normal contacts are connected with the line 364, which is connected with the normal timer winding 365. Thus the user can place any one of the selector switches 366 through 369 on the normal contacts 314 through 311 and have the particular operation corresponding thereto operated at normal length of time. On the other hand, the selector switches are also provided with shorter contacts 316 through 38| respectively, which are connected with the line 332, which leads to the faster timer winding 383. When any one of the selector switches 366 through 369 are placed on the corresponding shorter contact, that particular operation is operated at a shorter time. The selector switches 366 through 369 are also provided with shortest contacts 384 through 381 respectively, which are connected with the line 388 leading to the fastest timer winding 389. The user may, therefore, operate any one or more of the operations at the shortest time by placing the particular selector switch on its shortest contact.

In the operation of the modification shown in Fig. 8,the operator places any of the desired selector switches 366 through 369 at any one rof the desired"normal, or shorten or shortest contacts and then moves the timer knob 36 to the start position, and moves it inward .if .necessary. Thereafter the washing machine operates in the usual manner, except that the 4particular operation so selected will be shortened in a manner depending on :the 'position of the selector switches. Any one .of the operations may be selected to be normal, shorter or shortest While three ktimer windings, four selector cams and four selector switches have been specifically shown and described, in Fig. '8, by way of example, it is to be understood thatsuch numbers vmay be varied, as desired..

While 'the form of embodiment of the invention as herein disclosed, constitutes `a preferred form, it is to be understood that other Vforms might be adopted, as may come within the scope of the claims which follow.

What is claimed is as `follows:

l. A timer comprising: a driving motor having a plurality of running windings and a plurality of armatures cooperatively imparting a plurality `of running speeds to said motor; a set of contacts opened and closed 'by said motor to control the duration of a plurality of different operations of an Vindependently powered mechanism; and a manually adjustable switch in series with one of said contacts selectively connecting said last named Contact with said running windings preselectively to vary the duration of said different operations.

2. A timer comprising: a driving motor having a plurality of running windings and a plurality of armatures cooperatively imparting a plurality of running speeds to said motor; a set of contacts opened and closed by said motor to control the duration of a plurality of different operations of an independently powered mechanisrn; and a plurality of manually adjustable switches each in series respectively with a different contact of said set of contacts selectively connecting said last each said different contact with said running windings preselectively to vary the duration of said different operations.

3. A timer comprising: a driving motor having a plurality of running windings and a plurality of armatures cooperatively imparting a plurality of running speeds t0 said motor; a rst set of contacts openedand closed by said motor and controlling the energization of said motor; a second set of contacts opened and closed by said motor and controlling the flow of energy to a device to be controlled to cause said device to perform a plurality of different operations; and a manually adjustable switch in series with one of the contacts of said first set of contacts selectively connecting said one of the contacts with said running windings preselectively to vary the duration of said different operations.

4. A timer comprising: a driving motor having a plurality of running windings and a plurality of armatures cooperatively imparting a plurality `of running speeds to said motor; a rst set of contacts opened and closed by said motor and controlling the energization of said motor; a second set of contacts opened and closed by said motor and controlling the flow of energy to a device to be controlled to cause said device to perform a plurality of different operations; and a plurality of manually adjustable switches each in series respectively with a plurality of contacts of said iirst set of contacts selectively connecting said plurality of contacts with said running windings preselectively to vary the duration of said different operations.

5. A timer comprising: a driving motor having a plurality of running windings and a plurality of armatures cooperatively imparting a plurality of running speeds to said motor; a knob operated rotatable and axially movable cam shaft intermittently rotated by said motor; a set of contacts opened and closed by said shaft to control the duration of a plurality of diierent operations of an independently powered mechanism; a plurality of manually adjustable switches each in series respectively with a plurality of said contacts selectively connecting saidlast named contacts with said running windings preselectively to vary the duration of said different operations; and a master switch controlling the now of energy to said timer opened and closed by axial movement of said shaft.

6. A timer comprising: a driving motor havlng a plurality of running windings and a plurality of armatures cooperatively imparting a plurality of running speeds to said motor; a knob operated rotatable and axially movable cam shaft intermittently rotated by said motor; a rst set of contacts opened and closed by said shaft and controlling the energization of said motor; a second set of contacts opened and 12 closed by said shaft and controlling the flow of energy to a device to be controlled to cause said device to perform a plurality of diierent Aoperations; a plurality of manually adjustable switches each in series respectively with a plurality of contacts of said rst set of contacts with said running windings preselectively to vary the duration of said diierent operations; and a master switch controlling the flow of energy to said timer opened and closed by axial movement of said shaft.

ROBERT R. CANDOR.

REFERENCES CITED The following references are of record in the le of this patent:

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