US2942446A - Washing machine pump and drive mechanism - Google Patents

Description

June 28, 1960 Original Filed Nov. 30, 1954 WASHING C, PLA-r1' ETAL 2,942,446

MACHINE PUMP AND DRIVE MECHANISM '7 Sheets-Sheet 1 JACK F. CLEARMAN BY DEAN H. FREUND A ORNEYS June 28, 1960 Q |I PLAT-r ETAL 2,942,446

WASHING MACHINE PUMP AND DRIVE MECHANISM Original Filed Nov. 30, 1954 '7 Sheets-Sheet 2 June 128,V 1960 l, PLAT-r ETAL 2,942,446

WASHING MACHINE PUMP AND DRIVE MECHANISM original Filed Nov. 3o, i954 'I sheets-sheet s Mii., 27 IMI? 3 no 5.4: 36 a9 5o 47 ol [1747 lli'lllll* l lgumimi-TL I "'"nml N, L

39 l I I" 36 37 l 'l l o' i '42 I 136 l ,3052 |29 3? 3o Hr 5 34m 7 l: ull I' B61 l I4 l 13 4o l 29 noo l l [i .E

INVENTORS CLARK I. PLATT JACK F. CLEARMAN BY DEAN H. FREUND Mm: @MQ/,W

ATTO R NEYS June 28, 1960 c. l. PLATT ETAL WASHING MACHINE PUMP AND DRIVE MECHANISM Original Filed Nov. 50, 1954 7 Sheets-Sheet 4 m N m AD NTMN 3 WMM@ E 2 NLER N M IPLF 4 rD ...C T l AX FH T l WKN MA l g v fwn. Mmm 9 CJD I 8 www June 28, 1960 Y c. 1. PLATT ETAL 2,942,446

WASHING MACHINE PUMP AND DRIVE MECHANISM Original Filed Nov. 30, 1954 i 7 Sheets-Sheet 5 l l 79 2| sej $4/ JNVENToRs CLARK PLATT JACK F. CLEARMAN Y DEAN H. FREUND A TO RN EYS June 28, 1960 Q PLATT EI'AL 2,942,446

WASHING MACHINE PUMP AND DRIVE MECHANISM Original Filed Nov. 50, 1954 7 Sheets-Sheet 6 INVENTORS CLARK I. PLATT JACK F`. CLEARMAN BY DEAN H. FREUND ATTORNEYS June 28, 1960 PLATT ETAL 2,942,446

WASHING MACHINE PUMP AND DRIVE MECHANISM Original Filed Nov. 30, 1954 7 Sheets-Sheet 7 8v H @ma @me Ill@ lill@ INVENToRs PLAT-r JACK F. CLEAQMAN BY DEAN H. FREUND a4/y CLARK l.

ATERNEYS United States Pateflfo MACHINE PUMP AND DRIVE i MECHANISM Clark I. Platt, Benton Harbor, and Jack F. Clearman and Dean H. Freund, St. Joseph, Mich., assignors, by mesne assignments, to Whirlpool Corporation, a corporation of Delaware Continuation of application Ser. No. 472,165, Nov. 30, 1954. This application Aug. 8, 1958, Ser. No. 753,864

Claims. (Cl. 68-23) This application is a continuation of our application Serial No. 472,165, filed November 30, 1954, now abandoned. Y f

This invention relates to a combined storage and return pump and system for automatic clothes washing, rinsing and extracting machines and more particularly relates to an improved washing machine and pump structure and drive therefor for driving the pump to pump lluid in a selected direction of liow.

Automatic laundry machines for washing, rinsing and drying clothes in a series of sequential operations as determined by cyclic control means have heretobefore been provided with a pumping system to take sudsy wash water from the clothes container 'and pump the sudsy water to a storage container during the extracting and rinsing operations and toreturn the sudsy water to the clothes container for a next succeeding washing operation.

Such pumping systemshave used two pumps which are usually connected in seriesso that onepump forms aconduit for fluid when the lluid is being pumped by the other pump in `one direction and vice versa, and usually require separate motors for driving the individual pumps, orv for separate" operating mechanisms for selectively driving the pumps from the drive mechanism for driving the other parts of the machine.

While such systems have been successful insofar as the storage and return of the suds is concerned, they have been quite expensive in that a separaterpump and drive mechanism is provided for each operationl and the pumps have necessarily been quite inetlicient to enable one pump to serve as a conduit for lluid pumped by the other.

It is accordingly a principal objectr of the present invention to improve upon automatic laundry Vmachines having a suds' return, by providing a simple form of suds return pump and an operating and control mechanism therefor selectively operable to 'etect the pumping of lsuds in'storage and return directions by the use of a single pump.

A further object of the present invention is an improved suds storage and return pump and pumping system requiring a single operating and control mechanism selectively operable to drive the pump in opposite directions to effect the withdrawal of suds from the laun- Y to provideV vide a combined storage and suds return pumping system driven positions by the Yoscillatable movement' of the i drive member for the agitator.

2,942,446 Patented June 28,

2 Y Y Still another object of the invention is to provide a combined storage and suds return pumping system for automatic washing machines in which a single bi-directional pump serves to pump the suds to a container for storage and return the suds and is selectively driven in reverse directions through the mechanism for driving the operating parts of vthe machine, and is shifted under the control of thecyclic control mechanism for the machine l for broken away and with certain other parts in vertical section; Y

Figure 2 is a side elevational view of -the laundry machine shown in Figure 1 and showing the machinerin position to discharge sudsy water to a storage container in the form of a Alaundry tub, and to discharge spent water to said tub for drain; v

Figure 3 is a fragmentary bottom plan view of the operating mechanism for the machine shown in Figure l; Figure 4l -is an enlarged detail elevational view. showing the pump -and drive and. control mechanism therefor, with the pump connected to be driven to pump water'in one direction; Y

Figure ASis a view somewhat similar to Figure Y4 showing the pump positioned to be drivenY in an opposite direction from the' direction shown Yin Figure 4;

Figure 6 is an enlarged fragmentary vertical for substantially along line VIVI of lFigure 8;

Figure 7 is an enlarged detail view showing certain details of the selective control mechanism for effecting the positioning` of the pump in tions;

Figure 8 is an enlarged fragmentary plan view of the drive mechanism looking substantially along `line VIII-'- f Figure 10 is a'vertical sectional view taken through Y the drive mechanism for the machine in order to show: certaindetails of the drive to the agitator and ,clothesV container; and

Figure 11 is an electrical circuit diagram of theimaf chine of the present invention. I In theembodiment of our invention illustrated in the drawings, we have shown in -Figure 1 an automatic washing, rinsing and drying machine 10 having a cabinet 11 formingan enclosure for a tub 12 havinga pump 14. for

withdrawing. sudsy water therefrom and returning sudsy water thereto.. A clothes container 15 Tis rotatably mounted'within said tub, and Ais closed at its Atop .by said cabinet which also forms an enclosurefor the drive mechanism for the machine.

The tub 12 is shown as being carried on pension links 17--17 encased in rubber" at their-ends carried in sockets 19 in the base 16and in similarjsocketsY 19a at the upper part of the cabinet 11, for damping osci latable movement of said tub and base.

Suspended from theV base 1 6 on ahallg'el' bracket a motor 43 serving as the drive motor for the machine. A

sectional `V view taken through the pump and pivotal support thereits reversely d rivenposicontrol and i a floating base l 16 suspended from-the top portion ofthe cabinet onfsus gear casing 23 for the oscillatable drive mechanism for the machine is likewise suspended from the base 16 on bolts 20 threaded into studs 21 welded to base 16, maintaining said gear casing in fixed parallel spaced relation with respect to the base 16.

The gear casing 23 is of a form similar to that shown and described in Patent No. 2,610,498, dated September 1,6, 1952, and is in two parts, a lower part 24 serving as a casing for oscillatable drive gearing for oscillatably driving an agitator 25 in the clothes container or basket 15, and an upper part 26 of which serves as a cover for said lower part, a support for certain operating and control mechanisms for the machine and as a bearing support for certain drive shafts therefor, as will hereinafter more clearly appear.

An oscillatable drive shaft 27 is shown as being rotatably carried in the gear casing 23 in a boss 29 depending from the lower part 24 thereof and as extending upwardly through a boss 30 projecting upwardly from the upper part 26 thereof and as extending along and as being journaled within a rotatable drive sleeve 31. The sleeve 31 extends within a stationary sleeve 32 which extends upwardly from a hollow center post 33. The hollow center post 33 forms a closure for the central part of the bottom of the tub 12 and extends upwardly from the bottom of the tub 12 and has the sleeve 32 carried therein and projecting upwardly therefrom within a hollow upright support 34 for the clothes basket 15. The sleeve 31 has the clothes container or basket 15 supported on its upper end for spinning the same upon rotation of said sleeve as in the aforementioned Patent No. 2,610,498.

The agitator 25 is carried on the upper end of the shaft 27 and is suitably secured thereto to be oscillatably driven thereby upon oscillatable movement of said shaft.

The sleeve 31 extends downwardly along the shaft 27 and is rotatably driven from a drive sheave 35 freely mounted on the lower end portion of said sleeve through a clutch 36. The clutch 36 is herein shown as being a friction disk clutch having an annular friction surface 37 engaged with the upper face ofthe sheave 35 'by a tension spring 42 connected with a clutch yoke 39. The clutch yoke 39 is operated by a solenoid controlled shifting mechanism 40 to effect engagement or disengagement of the clutch 36. The shifting mechanism 40 includes a rectilinear movable shifting bar 41, as in the aforementioned Geldhof and Ringer Patent No. 2,610,498.

The motor 43 is shown as having an upwardly projecting motor shaft 45, having a motor pulley 46 suitably secured to the upper end. The hanger bracket 44 may be mounted on the base 16 for adjustable movement with respect thereto to take up tension on a drive belt 47 in any well known manner, and is no part of the present inven tion so need not herein be shown or described. The drive belt 47 is shown as being trained about the motor pulley 46 to and around the drive sheave 35 for spinning the basket or clothes container 15 upon engagement of the clutch 36, and around a drive sheave` 49, pinned or otherwise secured to the upper end of a drive shaft 50 for the mechanism for oscillatably driving the shaft 27 and the agitator 25. The shaft G is shown as being journaled in a boss 52 projecting upwardly from the upper part 26 of the gear casing 23 and as extending downwardly within said gear casing and forming a drive for the oscillatable drive mechanism for oscillatably driving the agitator drive shaft 27.

The drive from the -driveshaft 50 to the oscillatable drive shaft 27 is like that shown in the Geldhof and Ringer Patent No. 2,610,498 and includes generally a pinion 51 on the shaft 50 within the gear casing 23 meshing with and driving a gear 53 having a crank 54 thereon. A drive link 55 connects the crank with a gear sector 56 for oscillatably driving the same. The gear sector 56 is keyed or otherwise secured to a vertical shaft 57 to oscillatably drive said shaft 57. The shaft 57 has a carrier 59 for the shifting mechanism 40 carried on the upper end thereof on the top of the casing 23. Two solenoids 60 and 61 are carried in said carrier and are selectively energizable for operating either the shifting bar 41 for the clutch 36 or a shifting bar 63, for shifting a pinion 64 into engagement with a clutch vor pin 65 on the vertical shaft 27 for oscillatably driving said shaft from the pinion 64. The pinion 64 is shown in Figures 9 and l0 as meshing with and being oscillatably driven from the gear sector 56.

The solenoids 60 and 61 are shown as having depending armatures 69 and 70, respectively, shown as being forked at the lower ends thereof and carrying transverse pins 71 and 72, respectively, for shifting the respective shifter bars 41 and 63 as in the Geldhof et al. Patent No. 2,610,498.

The shifter bar 41 has a cam face 73 on the end thereof engaged by an operating rod 74 for the yoke 39 and clutch 36. The rod 74 is shown as extending along opposite sides of the shifter bar 41 and as being engaged with the cam face 73 of said shifter bar as by tension spring 42.

The shifter bar 41 is rectilinearly shifted in a forward or backward direction in accordance with the energization of the solenoid 60 in the oscillating carrier 59, as in Patent No. 2,610,498 previously mentioned, and is shifted in the same manner the shifter bar 63 is shifted upon energization of the solenoid 61. Inasmuch as the two shifter bars are shifted inthe same manner and inasmuch as the bi-directional pump 14 of our present invention is operated by the shifter bar 63, the manner of shifting the j shifter bar 63 need only herein be shown and described in detail.

The shifter bar 63 is shown in Figure 9 as having a recessed cam face 75 formed therein along which rides a roller 76 carried between the furcations of the bifurcated upper end portion of a vertical shifting pin 77, extending within the gear casing 23 and slidably guided therein. The shifting pin 77 is shown as having a shifting yoke 79 secured thereto and having engagement with the undersurface of a shifting collar S0, herein shown as being formed integral with the oscillatable drive pinion 64 (Figure l0). The shifting pin 77 is biased in adownward position to effect engagement of the oscillatably driven pinion 64 with the clutch pin 65 by means of a compression spring 81 encircling the shifting pin 77 and interposed between the undersurface of the wall of the top portion 26 of the gear casing 23 and the shifting yoke 79. Thus upon movement of the shifter bar 63 in a direction, which in Figure 9 is shown as being to the left, the roller 76 will roll up along the inclined cam face 7S and disconnect the oscillatably driven pinion 64 from the clutch vpin 65 on the agitator drive shaft 27. Upon movement of shifter bar 63 from the disengaged position of the clutch pin 65 to the right to Ithe position shown in Figure 9, the spring 81 will force the roller 76 to move, downwardly along the inclined cam face 75 to effect engagement of the pinion 64 with the pin 65 to drive the oscillatable agitator drive shaft 27.

The shifter bar 63, near its end opposite from the cam face 75, is provided with two vertically spaced longitudinally extending slots 83 and 84 vertically offset one from the other and having the adjacent ends thereof joined by a short vertically extending slot 85. The pin 72 extends through and slidably engages either of the slots 83 or 84 depending upon the position of the armature 70 of the solenoid 61. When the cam bar 63 is lin the position shown in Figure 9, the solenoid 61 is energized and oscillatable movement of the carrier 59 will reciprocably move the pin 72 along the slot 83 and have no effect in shifting the shifter or cam bar 63. When, however, the solenoid 61 is deenergized, the pin 72 will drop downwardly along the slot into the slot 84. The pin 72 will then be in position to engage the left hand end wall of slot `84 and move the shifter bar 63 to the left upon oscillatable movement of the carrier 59, causing the roller 76 to ride upwardly along the inclined face 75 and lift the pin 77 to shift the oscillatably driven pinion 64 out of engagement with the clutch pin 65 on the agitator drive shaft 27 and disconnect the drive to the agitator. Upon energization of the solenoid 61, the pin 72 will move upwardly along the slot -85 into position to engage the right hand end of the slot 83 and shift the shifter bar 63 tothe right to the position shown in Figure 9, to effect an Voscillating drive tothe agitator 25.

Referring now in particular to the bi-directional pumping means of the invention for effecting the pumping of suds from the tub 12 for storage and the return of suds from the storage container to the tub for washing, effected by operation ofthe shifter bar 63, the pump 14 is shown in Figure 6 as being pivotally carried on the lower half 24 of the gear casing 23 on a lug 87 projecting outwardly therefrom. A-s herein shown, a generally U-shaped bracket 88 having its legs extending horizontally, is

pivoted on `its lower leg on a shouldered lbearing collar 89 carried on a suspension bolt 90 similar to the suspension bolts 20, suspending the gear casing 23 from the base 16. The upper leg of the -bracket 88 is also mounted on the bolt 90 and abuts at its lower end a spacer sleeve 91 and at its upper end a stud 92, The bracket S8 is in turn shown as being bolted or otherwise secured to a vertical leg 93 of a bracket 94, having spaced horizontal legs 95 projecting therefrom in Ian opposite direction from the horizontal legs of the U-shaped bracket 88. The legs 95 are drilled to extend around and form a support for -a sleeve portion 99 of a -housing 100 for the pump 14, and are suitably retained thereto, as by a snap ring`98.

The sleeve portion 99 is shown as having spaced bearings 101 and 102 for a vertically extending pump drive shaft 103, having a drive pulley 104 secured to the upper end thereof as by a set screw 105. The lower end of the pump drive shaft 103 has an impeller -107 secured thereto and rotatably mounted in a pumping chamber 109 in the pump housing t100. The impeller 107 may be made from rubber or any other suitable material, and has a plurality of pumping vanes 110 moving within the pumping chamber 109 for pumping liquid, depending upon the direction of rotation of said impeller, through either one of two oppositely extending ducts 111 or 112 leading from the casing 100 generally tangentially to the periphery of the Iimpeller'107. p

The duct 111 has a conduit 1:13 connected with and leading from a sump (not shown) in the bottom of the tub 12 for withdrawing liquid therefrom. .T he duct 1'12 is shown as having connection with a pipe or flexible conduit 115 connected with a two-way valve 116 (Figure 1) energized by a solenoid 117 (Figure ll) and having two flexible conduits 119 and 120 leading therefrom.

The conduit l119 is shown in Figure 2 as leading to one tub 121 of a laundry tub, the drain for which may have a stopper placed therein for the storage of sudsy water during the extracting and rinsingloperations of the washing machine 10, t Y

The conduit 120 may lead to another tub 122 of the laundry tubv and connected to drain to discharge rinse or spent water directly to' drain. v

Conduits 123 and124 are shown as being connected from hot and lcold water lines 12311 and 12411 directly to a duid mixing valvel (not shown) for mixing the hot and `Coldwater toprovide a tempered water lfor washing underA the control of a hot water control solenoid 126 and a mixed water control solenoid 127, as shown in Figure ll of the drawings. The mixing Valve itself may be of any well known form, and need not herein be shown or described further since it forms no part of the present invention. i

Referring now in particular to the drive for the pump 14 for driving `the rotor 107 thereof in one direction to supply sudsy water to the tub 12, and in an opposite direction to pump sudsy waterinto the storage tub 121 or to the drain .through the tub 122,A depending upon the position of the two-way valve 116", the pump pulley 104 is shown as beingl grooved for engagementV with the belt 47 to be driven therefrom upon pivotal movement ofthe housing in one direction about the axis of the bolt 90, and is also shown as having a relatively wide cylin# drical'drive face -129 extending-below the -grooved portion thereof for engagement with a resilient cylindrical Adrive V100 and yieldably holding the pulley 104 in one" driven position or another is shown as comprising an overcenter toggle linkage 131 loperated by the cam or shifting bar 63. The -over-center toggle linkage comprises va movable toggle member 133 formed by the bracket 88 and comprising an arm 134 projecting from and formed integrally with the upper horizontal leg of the bracket 88 and extending into a downwardly opening slot 135 formed in the shifting bar 63 adjacent the outer or right hand end thereof. (See Figures 8 and 9.)' The vertical leg of the bracket 88 is provided with two ver'- -tically spaced arms 136 having lugs 137 extending within the ends of vertically spaced compression springs 139. The springs 139 are'mounted on their opposite ends on spaced lugs 140 projecting from fixed brackets 141 and facing the lugs 137. y A

The over-center toggle linkage 131 formed by the movable bracket 88 and the lugs 137 and the fixed brackets 141 and lugs 140, together with the compression springs 139 mounted therebetween on the lugs,137 and 140, isk operated by shifting movement ofthe shifter'bar l63, controlling operation of Ithe agita-tor. Upon shifting movement of the shifter bar 63 to the right from the dotted line position to the solid line position shown in Figure 9, the arm 134 and movable toggle Ymechanism 133 will be Imoved in a clockwise direction to move'the springs 139 over-center to yieldingly bias the drive'face 129 of the pulley 104Yinto engagement with the friction surface of the pulley 49 to be driven therefrom, as shown in Figure 5 and by the solid lines in Figure S Upon movement of the shifter bar 63 to the left, to disengage the drive to the agitator shaft 27, the arm 134 and movable toggle mechanism 133 will be moved in arcounterclockwise direction to engage the pulley 104`with the belt 47, to be driven therefrom as shown in Figure 4 and the ldotted line' position shown in Figure S: When in this last mentioned position, pinion 64V is moved out of engagement with the clutch pin 65, to disconnect the drive to the agitator shaft 27. Y

It should here vbe noted from Figure 9 that whenV the springs'139 have beenmoved over-center to position thewpump in either one of its positions lto be driven by the friction surface 130 or 'by the 'belt 47, that the. end of the arm 134 is moved midway between the ends of the downwardly opening slot by the snap action of the springs 139 and is free from the ends of said slot to accommodatethe springs 139 to bias the pulley 104 into Aengagement with the drive'member.

Referring nowV tor-the operation of the 4machine and'l the electrical control circuit illustratedv in Figure 11, a timer unit generally indicated by reference character 145 is provided, which may be of Vany suitable type and is no part of the present'invention so need not herein beshown or describedV further.v The timer unit com- 7 determined sequence to effect the washing, rinsing and extracting cyclic operations of the machine.

A hand switch 161 is provided to initially close an energizing circuit to the various operating parts of the machine and is operated by a knob 163 to initiate the operation of the machine and settable for the washing cycles desired. Current is conducted to the electrically energizable parts of the machine through a main line conductor 164 connected with the hand switch 161 and a second main line conductor 165. The conductor 164 may be connected through the hand switch 161 to light a time switch lamp 16S upon closing of said hand switch.

The knob 163 is rotated to a position corresponding to the desired length of washing time and is then depressed to close the hand switch 161. The switches 158 and 159 will close to complete circuits through a switch arm 166 and a lower contact 167 of a float switch and energize either or both of the solenoids 126 and 127 to open the mixing valve and admit water to the clothes basket 15, it being understood that the energzation of the solenoids 126 and 127 depends upon the setting of a temperature control switch 128. During this till period, the timer motor 153 is deenergized and remains deenergized until the float (not shown) of the float switch moves the switch arm 166 of said float switch out of engagement with its associated lower stationary contact 167 of said lloat switch into engagement with upper stationary contact 169 of said oat switch.

It should here be noted that a water level switch 269 is provided to determine the level of water in the tub 12. In the position of said water level switch 269 shown in Figure ll one level of water is attained in the tub 12 and a circuit is completed through the lower contact 167 and switch arm 166 during filling of the tub and through the upper contact 169 and switch arm 166 when the tub is filled to the required level.

When the switch arm 269 is in its upper position a circuit is completed through a lower contact 167a and a switch arm 166a during filling of the tub and through the switch arm 166e and a contact 169a when the tub is filled to the required level. The water level switch 269 is of a well known form and is no part of the present invention so need not herein be shown or described further.

When a predetermined water level has been reached within the tub and the switch arm 166 moves upwardly into engagement with the stationary contacts 169, the electrical circuit to the hot and mixed water control solenods 125 and 127 will be broken and the flow of water to the clothes container 15 will stop.

The timer motor 153 will then be energized through the upper contact 169 of the float switch. Timer switch 155 will be closed at this time. The motor 43 will also be energized through the upper contacts of the oat switch. The agitator control solenoid 61 will be energized through thetimer switch 155. Energization of the solenoid 61 will bring the pin 72 upwardly along the slot 85 into position to engage the forward or right hand cnd of the slot 83 and move the cam or shifter bar 63 to the right and accommodate the roller 76 to Vmove downwardly along the sloping cam surface 75 into the position shown in Figure 9 to engage the clutch for driving the oscillatable agitator shaft 27 from the pinion 64. At the same time the arm 134 will be engaged by the left hand end of the slot 135 (Figure 9). This will pivot the pump and movable toggle 133 from the position shown by dotted lines in Figure 8 to the solid line position shown in this figure. The pulley 104 will then be driven by the friction surface 130. This will drive the impeller 187 of the pump 14 in a counter-clockwise direction and pumping will be from the two-way valve 116 to the tub 12.V When this occurs, the timer switch 154 is open and the solenoid 117 for the two-way valve is deenergized. In this position of the two-way valve, the valve is open to the drain conduit 120 and no pumping will occur. The

78 operation of the agitator 25 will then continue for a period of time and according to the setting of the timer by the operator. Y

After a predetermined advance of the time, the timer switch 156 will close. The timer switch 155 will remain closed. The control circuits to the timer motor 153, the main machine motor 43, and the agitator control solenoid 61 will then be completed through the timer switches 155 and 156 regardless of the position of the oat switch.

At the end of the washing period, the timer will ad- Vance to open the switch 155 and deenergize the agitator control solenoid 61. The switch 156, however, will remain closed and the main machine motor 43 and the timer motor 153 will continue to operate. Upon deenergization of the solenoid 61 the pin 72 will drop down wardtly along the slot into position to engage with the left hand end of the slot 84 and effect movement of the agitator cam bar from the position shown in Figure 9 to the left to the position shown in Figure 4.

Shifting of the cam bar 63 to the left will disengage the clutch for oscillatably driving the agitator drive shaft and will engage the right hand end of the notch with the arm 134. This will move the arm 134 of the movable toggle 133 and said movable toggle and the pump drive pulley 104 from the position shown by solid lines in Figure 8 to the position shown by dotted lines in this figure to be driven in a clockwise direction by the belt 47, the cam bar 63 snapping the toggle linkage mechanism over-center and the springs 139 biasing the pump drive pulley' into engagement with the belt 47, to be driven thereby. The pump is then pumping from the tub 12 to the two-way valve 116. The timer switch V154 also closes vto energize the solenoid of the two-way valve. This will open said valve to the conduit 119 connected with the suds storage tub 121 and suds will be pumped to said tub.

Upon the continued advance of the timer and the pumping of water from the tub 12 for storage, the switch arm 166 will engage the stationary contact 167 of the lloat switch. The timer switch 157 also will be closed to energize the solenoid 60 to effect the movement of the cam bar 41 into the position shown in Figure 5 to effect engagement of the clutch 36 and effect the spinning of the clothes container or basket 15. The solenoid 61, however, will remain deenergized and the pump 15 will continue to rotate in a direction to pump water to storage. The extracting operation may now take place. After a predetermined period of the extracting operation, which may be a period of two minutes, the timer cam 146 will advance to open the switch 154 and deenergize the solenoid 117 for the two-Way valve 116. The pump 14 will then pump to the drain tub 122. During this period, the cam 152 will come into position to effect intermittent closing of the switch 160 and energzation of the mixed water control solenoid 127 and the intermittent spraying of the clothes in the clothes container or basket 15. Upon continued advance of the timer 145, the timer switches 154, 155, 156, 157, 158 and 159 will open, decnergizing all of the electrical circuits with the exception of the mixed water controlrsolenoid`127 which will be energized through the upper contact of timer switch 160. The tub will then be filled with warm water to the level determined by the float switch'and the position of the water level switch 269. When the tub has been lilled with warm water, the float switch will open the electrical circuit to lthe mixed water control solenoid 127. Assuming the water level switch 269 isin the position shown in Figure l1, the switch arm 166 of the float switch will also engage the upper contact 169 to close an energizing circuit to the main motor 43 and the timer motor 153. The timer 145 will then commence to advance. The switch will also close to effect the energzation of the agitator control solenoid 61. The pin 72 will then engage the right hand end of the slot 83 and move the cam bar 63 to its extended or right hand position shown in Figures 5, 8 and 9. This will also effect operation of the overasia-14s the pulley 104 with the friction drive surface 130, t0 effect the drive of the impeller 107 of the pump 14, in a direction to supply water to the tub 12.- At this position of the cycle of operation of the timer switch, the timer switch 154 will be open and the two-way valve solenoid will be deenergized and said valve will be in position to supply water through the drain hose to the drain tub 122. The pump 114,` however, will do no pumping since the drain hose is-out of water and the direction of pumping is to the tub 12.

After the rinse period, the timer 145 will advance to open the switch 155 and deenergize the agitator solenoid 61. The cam bar 63 will then be moved to the left by engagement of the pin 72 with the left hand end of the slot 84 to disengage the pinion 64 from the clutch pin 65 on the agitator drive shaft 27. The same movement of cam bar 63 will pivot the pump 14 in position to engage the pulley 104 with the belt 47 to drive said pulley therefrom, as shown'in dotted lines in Figure 8 and solid lines in lFigure 4. The pump 14 will then be driven in a clockwise direction to pump water from the tub 12 to the two-way valve 116. The timer switch 154, however, will still be open. The solenoid 117 of the two-way valve 116 will thus be deenergized and said valve will be in position to direct water to the drain tub 122.

saidg` agitator, a driving member, a member drivenV by said driving member, oscillatable gearing driven by saidk last mentioned member for-oscillatably driving Vsaid agitator shaft, a bi-directional pump having uid connection with said clothes container and with a storage container,

' said pump having a casing mounted for rocking move- Upon 'the continuedV advance of the timer 145, the

switch 157 will close to energize the extractor control solenoid 60. The pin 71 will then move the cam bar 41 to eiect the engagementV of the spin clutch 36 `and spinning of the sleeve 31 and clothes container or basket 15;" At the beginning of this period the intermittent spray cam 152 willf'then'come into operation to elect-afplurality of sprays of theclothes in the clothes container 15. The pump 14 being in operation to withdraw water Vfrom the tub' 12 will pump the'water removed from theV return suds from the storage tub 121 to the tub 12, theV control yknob 163 is ,turned to a predetermined positionV designated' on the dial-as a'suds position. This will close the timer switch 156 and the-timer switch 154 to energize the rnotor'llll,v the timermotor 153 and the solenoid 117 for the two-'Way :valve vconnecting 'said `valve withV 'the storage tub 121-nV Thetimerjswitch '155`s 'also' closed and the agitator f solenoid 61yis ienergized. The pump 14 is thus inthe position shownin Figure'S'and the pulley 104 is driven from the vfriction surface 130. The pump is thus rotatingin a counterclockwise direction to pump sudsy water from the storage tub 121 back tothe tubV 12. As the water in the tub rises to open the contact 167 of` the float switch and move the .movable switch cam 166 4of said lioat switch into engagement withl the contact 169, the two-way valve solenoid 117 will be deenergized and the valve will be open to the drain hose. Y The timer motorf153 willY then advance the timer out of the suds return position Vthrough the Washing cycles previously described.- Y Y It will be understood that modifications and variations of the present invention may be effected without departing from the spirit and scopeof the novel concepts thereof. f

We claim as our invention:

l. In a combined storage and Vsuds returnpumping sis' system particularly adapted for washing machines having ment vabout an axis parallel'to the axis of Ysaid agitator shaft and having an impeller within said casing and a shaft for driving said impeller, an oscillatable carriage ocillatably driven by said oscillatabledrive gearing, a rectilinearly movable bar selectively moved by said carriage for ,pivoting said pump to' effect aY drive to said shaft and impeller inone direction Yfrom said driven memi ber in one direction of movement of said bar andtfrom said driving member in a reverse vdirection in another direction of movement of said bar, electrically energizable means on said carriage s electivelyenergi'zable to elect the movement of said'bar-in directions to drive said pump shaft and impeller from either of said members, a two-way valve having connection with said pump and having connection with said storage container for suds and with a drain, electrically energizable means to selectively move said valve to discharge either to storage or drain, said electrically energizable means for effecting the reverse drive of said pump and the movement of said valve to discharge either' to storage or drain being ener-V gized by the cyclic rcontrol forthe washing machine dependent upon the cycle of operation thereof.

' 2. In a combined suds storage and suds return pumping system for washingmachines and the like having a clothes container having an t oscillatable agitator therein,

an oscillatable agitator shaft for driving said agitator,

a motor, means driven ,by said motor' for oscillatably driving `said"agitator vshaft comprising a drive member, adriven member driven thereby and oscillatable gearing driven'fby said vdriven member, abbi-directional pump having iuidconnection:` with said-Vclot hes"contai`ner and with'a separate storage container and having an impeller v and an impeller shaft anda pump drive member on said shaft for driving the same, a rock'ablemounting for said pump, mounting said pump for rockable movement about an axis parallel to the axes' of said impeller shaftrand agitator shaft, and means for rocking said pump to position said pump drive member to be driven in one direction from saiddrive member and driven in a reverse direction from said driven-member comprising a rocking carriage rockingly driven by said oscillatable' gearing, a rectilinearly movable bar, velectrically energizable means on said carriage selectively operable to elect movement of said bar in opposite directions, and an over-center togglev linkage operated by said bar and connected with said rockable-mounting for Yrocking said rockable mounting and pumpto move said pump drive member into engagement with'either of saidY driving or saiddriven members Y landfor yieldably` holdingsaidY pump ,drive member to be ldriven from the selectedldriving or driven-member.'

3. In a combined sudsm storage andsuds return pumping system lfor washing machines andthelik'e-having a clothes container having an oscillatable agitator therein, an oscillatably driven lagitator shaftfor Voscillatably driving said agitatorfa motor, a sheave, a belt driven-by said motor for driving'said sheave,`bscillatable gearing driven by saidv sheave and having driving connections with said agitator shaft for oscillatably driving the same, ya bidirectional pump having huidA connection with said clothes and impeller, a rockable mounting forV said casing mounting said casing for rocking movement about an .axis

" parallel to the axis of said pump shaft, an oscillatable carrier oseillatablyrdriven by said oscillating gearing, a rectilinearly movable bar operatedby said Vcarriertt move in opposite directions, electrically energizable means on said carrier for effecting movement of said bar in opposite directions as selected, `and an over-center toggle linkage connected with said casing and having a biasing spring therein, said overcenter toggle linkage having an arm engaged by said rectilinearly movable bar for rocking said casing to lbring Asaid pulley into engagement with said belt and to maintain said pulley in engagement with belt by the over-center position of said spring and effect a drive to said pump in one direction, rand for rocking said pump casing in an opposite direction upon opposite movement of said bar to bring said pulley into engagement with said sheave to be driven-therefrom in an opposite direction, for reversing the direction of rotation of said impeller. Y

4. In a combined washing and extracting machine having a cabinet, a tub contained therein, a clothes container within said tub, an agitator Within said clothes container, an agitator shaft for oscillatably driving said agitator, a motor, oscillatable gearing for oscillatably driving said agitator shaft, two spaced pulleys, onecoaxial with the axis of said agitator shaftv and the other vspaced therefrom, a belt fordriving said pulleys from said motor, a drive mechanism driven by the other of said pulleys for oscillatably driving said oscillatable gearing, the improvements comprising a bi-directional pump reversely operable to pump sudsy water into said clothes container and into a separate storage container having a casing pivoted for rocking movement about an axis parallel to the axis of said agitator shaft and `having an impeller therein and a pump shafttfor driving the Vsame having a pulley on the outer end thereof, means selectively operable to effect the drive to'said pump in reverse directions as selected, comprising a stationary toggle bracket, a movable toggle Amember connected with said pump casing Ifor, pivoting the` same, a Vspring` connected between said toggle member and bracket and moved over-center upon movement offsaid toggle member inropposite directions and holding said pulley in selected positions intoengage ment with said belt Vor said drive member, and means selectively operable by said Aoscillating gearing for moving said movable toggle member in opposite directions as selected, and positioning said pumpin its selected driven position.

5. In a combined storage and suds return pumping system `particularly adapted for washing machines having a clothes container having an oscillatable agitator therein, an oscillatable agitator shaft for driving said agitator, a driving member and a driven member driven thereby, oscillatablel gearing driven by said driven member for oscillatably driving said shaft, a reversible pump having tiuid communication with said clothes container and witha separate storage container Vand having a casing` mounted for rocking movement about an axis parallel to the axis of said shaft, an impeller within said casing, 'apump shaft forsaid imf peller, a drive member for said shaft on the outside of said casing for driving said impeller in reverse directions as selected to pump fluidin a selected direction, an oscillatable member driven by said oscillatable drive gearing, a rectilinearly guided bar, means driven by said oscillatable member and selectively 'operable to effect rectilinear movement of said bar in one directon'when said means are in one position and in anothendirection when said means are in another position, and an over-center toggle mechanism connected to said pump and engaged by said bar upon rectilinear movement thereof forV moving said pump in one direction upon movement ofrsaid bar in one direction and holding said drive member for said pump into engagement with `said driving'member, and for moving said pump in an opposite direction upon an opposite direction of movement of said bar. and holding said pump drive member in engagement with said driven member for reversing the direction'of 'rotation of `said 12 impeller and the directionmof the flow of fluid through said pump.

6. In a combined storage and suds return pumping system particularly adapted for clothes washing machines having a clothes container having an oscillatable agitator therein, an agitator shaft for driving said agitator, a gear casing beneath said clothes container, a rst pulley having a shaft journaled in said casing and extending therein and oscillatable drive gearing driven by said shaft for oscillatably driving said agitator shaft, a reversible pump having tluid communication with said clothes containerand with a separate storage container and having a casing rockingly mounted on said gear casing for movement about an axis parallel to the axis of said agitator shaft, a motor, a belt for driving said pulley from said motor, said pump having an irnpeller, a pump shaft for driving the same and a ,pump drive pulley thereon to be driven from said pulley or said belt, said first pulley having a groove therein and a friction drive surface spaced from said groove, and means operated by said oscillatable drive gearing for moving said pump pulley into engagement with said belt to be driven thereby in one direction and into engagement with said friction drive surface of said first pulley to be driven thereby in an opposite direction, said means comprising a toggle linkage mechanism comprising a stationary toggle base on said casing, a movable toggle member connected with said pump casing for pivoting the same upon movement thereof, a spring connected between said toggle base and mov able toggle member, a rectilinearly guided bar, means selectively operable to effect rectilinear movement of said bar, an operative connection `between said bar and said movable toggle member Yfor moving the same in opposite direction as selected vand positioning said spring overcenter in either direction of movement of said bar.

7. in a combined storage `and suds return pumping system particularly adapted for washing machines hav ing a clothescontainer having anagitator therein, an oscillatable agitator shaft for driving said agitator, a gear casing beneath said clothes container, oscillatable drive gearing within said casing for oscillatably driving said agitatorshaft, a driven shaft extending within said casing for oscillatably driving said gearing, a reversible pump having fluid communication with said clothes container and with a separate storagecontainer and rockingly mounted on saidcasing, a pulley on the outside of said shaft for driving the same, a motor, a belt driven by said motor for driving said pulley, a slidably guided bar,an oscillating carriage driven by said oscillatable gearing, means selectively operable toconnect said carriage with said bar to slidably move said bar in opposite directions as selected, and an over center toggle linkage operated by said bar for moving said pump to be driven in one direction -bysaid belt and in an opposite direction by said pulley` comprising a stationary toggle base on said gear casing and spaced from said pump, a movable toggle member connected with said pump for pivotally moving the same about an axis parallel to the axis of said agitator shaft, a spring connected between said toggle base and said movable toggle member and moved past center upon movement of said toggle member to hold said pump in its selective driven positions, said bar having a downwardly opening slot, and an arm extending from said movable toggle member within said slot and being spaced `from the ends of said slot when said pump is in either of its two driven positions and being engaged by said bar upon rectilinear movement thereof to move said pump into its selected driven position.

8. In a combined washing, rinsing and extracting machine, a cabinet, a tub within said cabinet, a clothes container mounted within said tub for rotatable movement with respect thereto, `an agitator within said clothes con tainer, a gear casing within said cabinet beneath said tub, an agitator drive shaft journaled in said casing and extending upwardly therefrom for driving said agitator.

a sleeve encircling said agitator drive shaft and connected with said clothes container, a clutch for effecting spin.- ning movement of said clothes container, a motor, a shaft journaled in said gear casing in spaced relation with respect to said agitator driveshaft, a rst pulley on said shaft, a second pulley coaxial with the axis of said agitator drive shaft and connected to drive saidsleeve through said clutch, gearing Within said casing driven by said first pulley and including a gear oscillatably driven thereby, a second gear on said agitator shaft, a second clutch for connecting said gear Vwith said agitator shaft, an oscillating carrier on the outside of said gear casing oscillatably driven by said oscillatable gear, a clutch shifter bar guided for slidable movement with respect yto said casing and having operative connection with said trst clutch for shifting the same upon rectilinear movement of said bar, a second clutch shifter bar slidably guided in said casing and having operative connection with said second clutch for effecting a drive to said agitator drive shaft from said gear mounted thereon, individual electrically energizable means on said carriage selectively energizable to effect the shifting of said bars to engage and disengage said clutches in a predetermined cycle of operation, areversible pump having i fluid communication with said clothes container and with vand into engagement With said belt for effecting the drive of said pump in an opposite direction.

9. A combination washing, rinsing `and drying machine in accordance with claim 8, wherein the over-center Y V14 said bar upon shifting movementthereof to pivot said casing and move said spring pastcenterrin either direction of movement of said bar to selectively effect the Y drive of said pump in opposite directions.

10. In a combined suds storage and suds return pump-y l: 'i

ing system for washing machines and the like having a clothes container and having an oscillatable agitator therein, an oseillatably driven `agitator Shaft forV said agitator, a motor, a sheave, `a belt driven by said motor for driving said sheave, oscillatable gearing drivenby said sheave and having driving connection with said agitator shaft for oscillatably driving the same, a bi-directional pump having uid connection with said clothes container and with a separatev storage container and -having a casing, a reversely operable impeller in said casing operable to pump liquid in opposite directions upon rotation of said impeller in reverse directions, a shaft for said impeller, a pulley on said impeller shaft for driving said shaft and impeller, a rockable mounting for said pump casing mounting said casing for rocking movement about an' axis parallel to the axis of said impeller shaft, an oscillatable carrier, means driven by saidoscillating gearing .for oscillatably driving said carrier, a rectilinearly movable bar reciprocably moved by said carrier in reverse directions, electrically energizable means on said carrier for effecting movement of said bar in opposite directions as selected, and an `arm connected between said pump casing and bar for effecting pivotal movement of said rockable mounting and pump casing in opposite directions upon rectilinear movement of said bar inA opposite directions to effect movement of said rockable mounting and pump casing in a direction to engage said pulley with said belt to drive 'said` impeller shaft, and in an opposite direction to disengagelsaid Vimpeller pulley from -said belt, and to engage saidpulley with said sheave to reverse the direction `o f rotation thereof. l

References Cited inthe illeof y'this patent UNITED STATES PATENTS Sanders Dec. 27, 195,5

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