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Publication numberUS2867105 A
Publication typeGrant
Publication dateJan 6, 1959
Filing dateMar 31, 1953
Priority dateMar 31, 1953
Publication numberUS 2867105 A, US 2867105A, US-A-2867105, US2867105 A, US2867105A
InventorsLandwier William G
Original AssigneeMurray Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Washing machines
US 2867105 A
Abstract  available in
Images(2)
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Claims  available in
Description  (OCR text may contain errors)

Jan. 6, 1959 w.- G. LANDWIER 2,867,105

WASHING MACHINES 2 Sheets-Sheet 1 Filed March 31, 1953 w M 1 6 w M M w 2 4 7 04 Y 6 m M. 4 2 7 w M WM 6% w 6 2 M B 2 M. w a 2, #0 W a J 3 W a, l I I I I I! 4 6 n02 M w 2 m 2 8 w [NVENTUR WILLIAM. G. Lzmnwmn IBY' g ATT CHENEY Jan. 6, 1959 w. G. LANDWIER 2,867,105

WASHING MACHINES- Filed March 31, 1953 2 sheets-sheet 2 62 8 E- g. 2. v

JNVENTUR WILLIAM E. LANDWIER ATTURNEY WASHING MACHINES William G. Landwier, Fayetteville, N. Y., assignor, by mesne assignments, to The Murray Corporation of America, Detroit, Micln, a corporation of Delaware Application March 31, 1953, Serial No. 345,889

13 Claims. (Cl. 6823) This invention relates to washing machines, and more particularly to machines of the single tub vertical axis type in which washing agitation and centrifugal extraction is performed.

The present invention is further directed to a washer having an agitator action of the gyrating pulsating type, and in which the entire driving mechanism and tub is mounted as an inverted pendulum, the driving mechanism and entire casing therefor being adapted to rotate in unison during centrifugal extraction. Further, the gyrating and pulsating agitator, being of the spiral blade type, results in a roll-over and continual annular redistribution movement of laundry subjected to the turbulence created.

The above and other novel features of the invention will appear more fully hereinafter from the following detailed description when taken in conjunction with the accompanying drawings. It is expressly understood that the drawings are employed for purposes of illustration only and are not designed as a definition of the limits of the invention, reference being had for this purpose to the appended claims.

In the drawings, wherein like reference characters indicate like parts:

Figure 1 is a vertical sectional view of an automatic washing machine;

Figure 2 is a vertical sectional view of the driving mechanism;

Figure 3 is a fragmentary sectional view taken on the line 3-3 of Figure 1;

Figure 4 is a fragmentary view taken from the line 44 of Figure 2; and

Figure 5 is an enlarged fragmentary sectional view of the overrunning clutch.

Referring to the drawings, there is shown a frame which may be provided with a lower casing wall 12, there being supported on the frame a stationary tub having a side Wall 14 which may be square or round, such tub having a bottom wall 16. The frame 10 has a transverse support structure 18 located somewhat above the bottom of the frame 10. Such support structure forms the main central support for the mechanism and wash tub. The support structure 18 carries a central sleeve and thrust bearing 20 mounted within a resilient rubber mounting block 22 whereby the sleeve hearing may have universal movement with respect to the frame. Journaled in the sleeve bearing 20 is a rotatable hollow column structure comprising a main member 24 and a cover plate 26. The main member 24 is provided with a journal 28 at its lower end, as well as a thrust bearing 39, the journal 28 and thrust bearing 30 engaging the bearing sleeve 20. In the lower end of the hollow column are spaced transverse walls 32 and 34, in which is coaxially journaled a drive shaft 36, such drive shaft projecting below the lower end of the column 24 and having aflixed thereto a drive pulley 38. A motor suitably mounted in the frame 10 is provided with a pulley 42 having a belt drive 44 to the drive pulley 38.

2,887,,l05 Patented Jan. 6, 1959 The central column at its upper end projects throng a stationary collar 46, such collar having a bearing sleeve 48 and a thrust bearingStl engaging a journal surface 52 and thrust bearing surface 54 on the central column. The upper end of the column 24 projects into the upper flared portion 56 of the collar 46 and is threadedly secured to an annular fitting 58 as at 59, such fitting having a shoulder 60 to receive the bottom 62 of the tub 64, the tub bottom being clamped in place upon the shoulder by a lock nut 66 threaded on the member 58 as at 68. V

The bottom 16 of the tub 14 is provided with an inner annular flange 70 providing a large aperture through which the column 24 may extend, the flange 70 being bounded therearound by. a substantially spherical surface 72, the center of which coincides approximately with the center of the universal-movement of the bearing sleeve 2%) within the resilient block 22. Slidably mounted upon the collar 46 is an annular member 74 having generally spherical contour, such member extending in overlapping relation to the spherical surface 72 of the tub bottom 16. The member 74 is provided with an annular friction ring 76 adapted to engage the under surface of the spherical area'72 so as to frictionally ride against such surface. The member 74, being slidably mounted upon the collar 46, is urged upwardly on said collar by a compression spring 7 8, such spring being located over the down-turned sleeve 80 with its lower end bearing against a thrust ring 82.

The annular flange 70 of the tub bottom 16 is provided with three or more uniformly spaced cars 84 extending inwardly toward the collar 46. The collar 46 is provided with similar ears 86 corresponding in number and similarly angularly spaced. The cars 74 and 86 are provided with apertures 88 and 90 to receive tension springs 92 which act to resiliently hold the sleeve 46 in a centered position, so that the bearing sleeve 48 is normally vertically aligned above the bearing sleeve 20. An annularly corrugated boot 94 is secured to the flange 70 by a clamp ring 96 along its outer edge, and its inner annular edge is secured against a shoulder 98 on the collar 46 by a clamp nut 100.

' Within the column 24 there is positioned a bevel gear 102 rotatably mounted upon an inclined stub shaft 104 carried in a boss 106 of the wall of the column 24. The boss extends inwardly to meet the hub of the bevel gear, both having aligned cylindrical surfaces over which is positioned a helical coil spring overrunning clutch 111 sometimes referred to as the L. G. S. type. Such bevel gear 182 meshes with a pinion 108 keyed to the upper end of the shaft 36. Axial movement of the bevel gear upon the stub shaft 104 is prevented by a washer 110 and lock ring 112. The bevel gear has eccentrically'mounted therein a crank pin 114, such crank pin being freely rotatable with respect to the bevel gear. The crank pin has an offset 116 and a clevis 118 connecting with a driven shaft 120 projecting upwardly through the collar 46 and the member 58 into the tub 64. The shaft 120 has slidably mounted thereon a sleeve 122 having a spherical outer surface 124. The spherical surface of the sleeve is clamped between opposed symmetrical ring halves 126 and 128, such ring halves having spherical inner surfaces 130 and 132 forming a bearing engagement with the spherical surface 124 of the sleeve 122. The ring halves 126 and 128 are clamped together around the sleeve 124 and between shoulders 134 and 136 of the upper end of the column 24 and the member 58, respectively, the column having an annular bore 138 adapted to snugly receive the members 126 and 128. The column member 24, as previously referred to, has a sufficient cavity therewithin to house the bevel gear 102 and the motion transmitted to the shaft 120. The cover plate 26 is provided with a weight 27 which will be so proportioned as to balance the olf-center weight of the stub shaft 104 and the boss 196.

The upper end of the shaft 120 is provided with an agitator 140 having a truncated conical central section 142 and preferably a plurality of spiral blades 144. The lower end of the conical member 142 is provided with a depending skirt portion 146 to which is secured an annularly corrugated bellows-like gasket 148, the inner edge 150 thereof being clamped around the skirt 146 by a clamp ring 152. The gasket 148 at its outer end may be inturned as at 154 and clamped to the bottom 62 of the tub 64 by a ring 156. The corrugations of the gasket 138 are preferably maintained in shape by suitable metallic rings 158 positioned within the several corrugations. The tub 64 may have an outer wall 169 tapered sufflciently so that water may be lifted upwardly and be thrown out through overflow apertures 162 when the tub is rotated at centrifuging speed. The tub bottom 16 may have an outlet 164 which, as desired, may be continuously open to drain or empty into a pump before continuous drain. Water may be admitted to the tub by a nozzle 166, the flow of water to the tub being con trolled by a valve 168.

The lower end of the column immediately above the thrust bearing is provided with a cylindrical braking surface 170. An annular braking ring 172 having a friction lining surrounds such braking surface and is provided with resiliency whereby to effect a desired degree of frictional engagement up n the rotating column. I

The ring is provided with a radially extending arm 176, which arm projects into the path of a plunger 178, the plunger being slidingly mounted in a U-bent member 180 mounted on the frame construction 18. A spring 182 bearing against the end 184 of the U-member 189 engages a ring 186 affixed to the plunger, so as to normally urge the plunger to the position shown and in the path of the arm 176. A solenoid 188 is adapted to retract the plunger 178 out of the path of the arm 176, whereby to allow the brake ring 172 to rotate freely with the column 24.

With the column 24 held stationary by the friction band 172 and the plunger 178, rotation of the shaft 36 rotates the bevel gear 108, the latter in turn effecting an up and down and elliptical motion to the upper end of the shaft 120. Rotation of the bevel gear during agitation is such as to overrun clutch 111. The bellows gasket 148 thus, through the elliptical and up and down movement of the agitator 140, is caused to distend and collapse to the position shown with each cycle of operation. The belt drive 44 with the pulleys 42 and 33 and the motor speed and bevel and pinion gear ratios, are so chosen as to give a rapid motion to the agitator 140 to provide washing agitation to the wash water contained Within the tub 64. The spiral blades 144 tend to swirl the water and provide a roll-over action as well as an annular flow of the Wash fluid, such action providing continuous interchange of position of laundry suspended within the wash fluid.

After a period of washing has been completed, the solenoid 188 is energized, the plunger 173 withdrawn, whereby the column 24 is free to rotate. The motor is then reversed. With reverse rotation of the motor, the bevel gear is locked by the overrunning clutch 111, forcing the column and mechanism to rotate as a unit. When rotation commences, the agitator movement stops, and the wash water within the tub rises along the outer edge of the tub,'and is caused to overflow through the ports 162; and as speed further increases, the overflow continues until sufiicient speed is reached to cause all water Within the tub 64 to flow upward along the inclined wall 160 out the overflow 162. After a period of centrifugal extraction sufiicient to squeeze the water centrifugally from the laundry held against the wall 160, power is shut 011 4 from the motor 40, and the tub allowed to reduce speed until it comes to rest.

Should it be desired to decelerate at a rapid rate, the solenoid may be de-energized, causing the plunger 178 to engage the arm 176, whereby the friction ring 172 will be stopped, rendering the friction lining 174 effective to gradually brake rotation of the column member 24. If a rinsing operation is desired, rinse water may be introduced into the tub in sutficient quantity and agiration may be effected as before for a short period by braking the column 24 against rotation. Thereafter, the rinse water may be expelled in the same manner as the wash water, following which the clothes may be centrifuged for a period to remove as much water as may be centrifugally extracted therefrom.

If desired, during the initial extraction of the wash fluid or following removal of substantial quantities of wash fluid, rinse Water may be sprayed against the laundry contained within the tub for a period so as to provide a centrifugal rinse, after which such spray may be discontinued and the tub 64 allowed to spin for a sufficient period to centrifuge the laundry sufficiently dry.

It will be appreciated that the stages of operation described may be controlled by any suitable timer mechanism, as will be well understood in the art, so that the sequence of operations, including the initial inlet of water into the tub, will be effected in a complete preestablished wash cycle.

While the bevel gear 102 has been shown as mounted on an axis inclined from the horizontal by about 20, it will be appreciated that such axis may be inclined to a greater or lesser amount, depending upon the extent of horizontal elliptical motion desired for the agitator 140. It will be observed that the column 24 has considerable weight which, when added to the weight of the wash tub, will tend to reduce the radius between the axial center of the column and the effective center of gravity of the mass including any unbalanced distribution of laundry within the tub. Thus, any vibration caused by unbalance of laundry within the tub will tend to be minimized. Further, the column comprises in effect an inverted pendulum universally journaled at its lower end and free to move about its upper end, so that upon the speed of rotation exceeding the critical speed, the column, tub and laundry may rotate about its center of gravity. The member 74, with the friction surfaces 76 engaging the tub bottom 16 in combination with the coil springs 92, will tend to damp any severe vibration as the speed of rotation is increased below the critical, and yet permit such freedom of movement as is necessary for the rotating assembly to rotate about its center of gravity during rotation above the critical without transmitting any substantial vibration forces to the frame structure as a Whole.

Although the overruning clutch is shown, it will be appreciated that such clutch can be eliminated, if desired, and the bevel gear allowed to rotate freely in either direction. If desired, a single direction motor may be employed, and by the reaction of the movement of the agitator, the tub will gradually accelerate, throwing the wash water out centrifugally. In such case, the inertia of crank 116, when laterally disposed, will act to stop rotation of the bevel gear as speed increases.

Although a single embodiment of the invention has been illustrated and described, it is to be understood that the invention is not limited thereto. As various changes in the construction and arrangement may be made without departing from the spirit of the invention, as will be apparent to those skilled in the art, reference will be had to the appended claims for a definition of the limits of the invention.

What is claimed is:

1. In a washing machine, a rotatable hollow column, a wash tub mounted on the upper end thereof, and rotatable with the column, a drive shaft journaled in the lower end of the column axially thereof, and projecting beyond the lower end of the column,- gearing within the column driven by said drive shaft, means to prevent relative rotation in one direction between said gearing and column, a driven shaft and agitator means mounted in the upper end of said column and drivably connected with said gearing, a flexible seal extending between and secured to said last-named means and wash tub, a frame having a universally mounted resilient support journal for said column at its lower end, means associated with said column and frame for braking the rotation of said column during agitation, and a reversible motor for driving said gearing.

2. In a washing machine, a rotatable hollow column, said column forming a housing, a wash tub mounted on the upper end thereof, and rotatable with the column, a drive shaft journaled in the lower end of the column axially thereof, and projecting beyond the lower end of the column, gearing within the column driven by said drive shaft, a reversible drive motor for said shaft, a driven shaft and agitator means mounted in the upper end of said column, and drivably connected with said gearing, a one way clutch for preventing rotation in one direction of said gearing relative to said housing, a flexible seal extending between and secured to said last-named means and wash tub, a frame having a universally re silient support journal for said column at its lower end, releasable means associated with said column and frame for braking the rotation of said column, a stationary tub mounted on said frame and surrounding said Wash tub, and having a bottom with a central opening surrounding the upper end of said column in spaced relation, resilient means for centering said column with respect to said opening comprising a collar journaled on the upper end of said column, and a flexible annular seal between said collar and stationary tub bottom.

3; In a washing machine, a rotatable hollow column, a wash tub mounted on the upper end thereof, and rotatable with the column, a drive shaft journaled in the lower end of the column axially thereof, and projecting beyond the lower end of the column, gearing within the column driven by said drive shaft, a reversible drive motor for said shaft, a driven shaft and agitator means mounted in the upper end of said column, and drivably connected with said gearing, a one way clutch for preventing rotation in one direction of said gearing relative to said housing, a flexible seal extending between and secured to said last-named means and wash tub, a frame having a universally resilient support journal for said column at its lower end, releasable means associated with said column and frame for braking the rotation of said column, a stationary tub mounted on said base and surrounding said wash tub, and having a bottom with a central opening surrounding the upper end of said column in spaced relation, resilient means for centering said column with respect to said opening comprising a collar journaled on the upper end of said column, a flexible annular seal be tween said collar and stationary tub bottom, said tub bottom having a substantially spherical surface centered about said support journal, and an annular plate mounted on said collar and having frictional engagement with said spherical surface.

4. In a washing machine, a rotatable hollow column, a wash tub mounted on the upper end thereof, and rotatable with the column, a drive shaft journaled in the lower end of the column axially thereof, and projecting beyond the lower end of the column, gearing within the column driven by said drive shaft, a driven shaft and agitator means mounted in the upper end of said column and drivably connected with said gearing, said gearing comprising a pinion on said drive shaft, and a bevel gear journaled on an axis extending generally crosswise of the column axis, means for preventing rotation of said gearing in one direction relative to said housing, means for reciprocating said driven shaft, a slidg ing guide for said driven shaft mounted within the upper end of said column, a flexible seal extending between and secured to said agitator means and wash tub, a frame having a universally resilient support journal for said column at its lower end, and releasable means associated with said column and frame for braking the rotation of said column.

5. In a washing machine, a rotatable hollow column, a wash tub mounted on the upper end thereof, and rotat able with the column, a drive shaft journaled in the lower end of the column axially thereof, and projecting beyond the lower end of the column, gearing within the column driven by said drive shaft, a driven shaft and agitator means mounted in the upper end of said column and drivably connected with said gearing, said gearing comprising a pinion on said drive shaft, and a bevel gear journaled on an axis extending generally crosswise of the column axis, means for reciprocating said driven shaft, a sliding guide for said driven shaft mounted within the upper end of said column, a flexible seal extending between and secured to said last-named means and wash tub, a frame having a universally resilient support journal for said column at its lower end, releasable means associated with said column and frame for braking the rota-v tion of said column, means for restricting rotation of said bevel gear to one direction, a stationary tub mounted on said base and surrounding said wash tub and having a bottom with a central opening surrounding the upper end of said column in spaced relation, resilient means for centering said column with respect to said opening comprising a collar journaled on the upper end of said column, and a flexible annular seal between said collar and stationary tub bottom.

6. In a washing machine, a rotatable hollow column, a wash tub mounted on the upper end thereof, and rotatable with the column, a drive shaft journaled in the lower end of the column axially thereof, and projecting beyond the lower end of the column, gearing within the column driven by said drive shaft, a driven shaft and agitator means mounted in the upper end of said column and drivably connected with said gearing, saidgearing comprising a pinion on said drive shaft, and a bevel gear journaled on an axis extending generally crosswise of the column axis, means for reciprocating said driven shaft, a sliding guide for said driven shaft mounted within the upper end of said column, a flexible seal extending between and secured to said last-named means and wash tub, a frame having a universally resilient support journal for said column at its lower end, releasable means associated with said column and frame for braking the rotation of said column, means for restricting rotation of said bevel gear to one direction, a stationary tub mounted on said base and surrounding said wash tub and having a bottom with a central opening surrounding the upper end of said column in spaced relation, resilient means for centering said column with respect to said opening comprising a collar journaled on the upper end of said column, a flexible annular seal between said collar and stationary tub bottom, said tub bottom having a substantially spherical surface centered about said support journal, and an annular plate mounted on said collar and having frictional engagement with said spherical surface.

7. In a washing machine, a rotatable hollow column, a wash tub mounted on the upper end thereof, and rotatable with the column, a reversible drive shaft journaled in the lower end of the column axially thereof, and projecting beyond the lower end of the column, gearing within the column driven by said drive shaft, a driven shaft and agitator means mounted in the upper end of said column and drivably connected with said gearing, said gearing comprising a pinion on said drive shaft, and a bevel gear journaled on an axis extending generally transverse of the column axis, and means to restrict rotation of said bevel gear to one direction, crank'means on'said bevel gear coupled to said driven shaft for reciprocating said driven shaft, a sliding universal guide for said driven shaft mounted within the upper end of said column, a flexible seal extending between and secured to said lastnamed means and wash tub, a frame having a universally resilient support-journal for said column at its lower end, and releasable means associated with said column and frame for braking the rotation of said column.

8. In a lashing machine, a rotatable hollow column, a wash tub mounted on the upper end thereof, and rotatable with the column, a reversible drive shaft jeurnaled in the lower end of the column axially thereof, and projecting beyond the lower end of the column, gearing within the column driven by said drive shaft, a driven shaft and agitator means mounted in the upper end of said column and drivably connected with said gear-in" said gearing comprising a pinion on said drive shaft, and a bevel gear iournaled on an axis extending generally transverse of the column axis, and means to restrict rotation of said bevel gear to one direction, crank means on said bevel gear coupled to said driven shaft for reciprocating said driven shaft, and a sliding universal guide for said driven shaft mounted within the upper end of said column, a flexible seal extending between and secured to said last-named means and wash tub, a frame having a universally resilient support journal for said column at its lower end, releasable means associated with said column and frame for braking the rotation of said column, a stationary tub mounted on said base and surrounding said wash tub, and having a bottom with a central opening surrounding the upper end of said column in spaced relation, resilient means for centering said column with respect to said opening comprising a collar journaled on the upper end of said column, and a flexible annular seal between said collar and stationary tub bottom.

9. In a washing machine, a rotatable hollow column, a Wash tub mounted on the upper end thereof, and rotatable with the column, a reversible drive shaft journaled in the lower end of the column axially thereof, and projecting beyond the lower end of the column, gearing within the column driven by said drive shaft, a driven shaft and agitator means mounted in the upper end of said column and drivably connected with said gearing, said gearing comprising a pinion on said drive shaft, and a bevel gear journaled on an axis extending generally transverse of the column axis, and means to restrict rotation of said bevel gear to one direction, crank means on said bevel gear coupled to said driven shaft for reciprocating said driven shaft, a sliding universal guide for said driven shaft mounted within the upper end of said column, a flexible seal extending between and secured to said last-named means and Wash tub, a frame having a universallyrresilient support journal for said column at its lower end, releasable means associated with said column and frame for braking the rotation of said column, a stationary tubmounted on said base and surrounding said wash tub, and having a bottom with a central opening surrounding the upper end of said column in spaced relation, resilient means for centering said column with respect to said opening comprising a collar journaled on the upper end of said column, a flexible annular seal between said collar and stationary tub bottom, said tub bottom having a substantially spherical surface centered about said support journal, and an annular plate mounted on said collar and having frictional engagement with said spherical surface.

10. In a washing machine, a rotatable hollow column, a wash tub mounted on the upper end thereof, and rotatable with the column, a reversible drive shaft journaled in the lower end of the column axially thereof, and projecting beyond the lower end of the column, gearing within the column driven by said drive shaft, a driven shaft and agitator means mounted in the upper end of said column and drivably connected with said gearing, said gearing comprising a pinion on said drive shaft, and a bevel gear journaled on an inclined axis extending crosswise of the column axis, andrneans torestriet rotation of) said bevel gear to one direction; crank means on said bevel gear coupled to said driven shaft for reciprocating said driven shaft, a sliding universal guide for said driven shaft mounted within the upper end of said column, a flexible seal extending between and secured to said lastnamed means and wash tub, a frame having a universally resilient support journal for said column at its lower end, and releasable means associated with said column and frame for breaking the rotation of said column.

ll. In a washing machine, a rotatable hollow column, a wash tub mounted on the upper end thereof, and rotatable with the column, a reversible drive shaft jourualed in the lower end of the column axially thereof, and projecting beyond the lower end of the column, gearing within the column driven by said drive shaft, a driven shaft and agitator means mounted; in the upper and of said colurnn and drivably connected with said gearing, said gearing comprising a pinion on said drive shaft, and a bevel gear journaled on an inclined axis extending crosswise of the column axis and means to restrict rotation of said bevel gear to one direction, crank means on said bevel gear coupled to said driven shaft for reciprocating said driven shaft, and a sliding universal guide for said driven shaft mounted within the upper end of said column, a flexible seal extending between and secured to said last-named team and wash tub, a frame having a universally rcsilient support journal for said column at its lower end, releasable means associated with said column and frame for braking the rotation of said column, a stationary tub mounted on said base and surrounding said wash tub, and having a bottom with a central opening surrounding the upper end of said column in spaced relation, resilient mean for centering said column with respect to said opening comprising a collar journaled on the upper end of said column, and a flexible annular seal between said collar and stationary tub botom.

12. In a washing machine, a rotatable hollow column, a wash tub mounted on the upper end thereof, and retatable with the column, a reversible drive shaft journalled in the lower end of the column axially thereof, and projecting beyond the lower end of the column, gearing within the column driven by said drive shaft, a driven shaft and agitator means mounted in the upper end of said column and drivably connected with said gearing, said gearing comprising a pinion on said drive shaft, and a bevel gear journaled on an inclined axis extending crosswise of the column axis and means to restrict rotation of said bevel gear to one, direction, crank means on said bevel gear coupled to said driven shaft for reciprocating said driven shaft, and a sliding universal guide for said driven shaft mounted within the upper end of said column, a flexible seal extending between and secured to said last-named means and wash tub, a frame having a universally resilient support journal for said column at its lower end, releasable means associated with said col umn and frame for brakingthe rotation of said column, a stationary tub mounted on said base and surrounding said wash tub, and having a bottom with a central opening surrounding the upper end of said column in spaced relation, resilient means for centering said column with respect to said opening comprising a collar journaled on the upper end of said column, a flexible annular seal between said collar and stationary tub bottom, said tub bottom having a substantially spherical surface centered about said support journal, and an annular plate mounted on said collar and having frictional engagement with said spherical surface.

13. In a washing machine, a tub, an agitator centrally disposed within said tub, said tub and agitator being adapted to define a toroidal ring of Wash water, thin substantially uniformly thick spiral blades on said agitator, andrneans for movingsaid agitator in, an inclined elliptical path, the major axis of which extends substantially 9 in a vertical direction, said means comprising a crank mounted below the agitator on an axis inclined from the horizontal, a connecting rod extending from the crank to the agitator in a generally vertical direction, and a guide sleeve for said connecting rod disposed above said crank, and beneath said agitator.

References Cited in the file of this patent UNITED STATES PATENTS Molinare Dec. 20, 1938 Dyer Mar. 16, 1943 Clark Jan. 2, 1945 Rhode Aug. 29, 1950 Sisson Jan. 1, 1952 Kirby Oct. 21, 1952 Smith et a1. July 14, 1953 Fields July 14, 1953

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2140846 *Oct 9, 1937Dec 20, 1938Electric Household UtilitiesWashing machine
US2313928 *Apr 24, 1939Mar 16, 1943Gen Motors CorpDomestic appliance
US2366236 *Sep 28, 1940Jan 2, 1945Gen Motors CorpDomestic appliance
US2520336 *Jun 1, 1946Aug 29, 1950Rhode Martin EAgitator for laundry machines
US2580963 *Jan 31, 1950Jan 1, 1952Gen Motors CorpMechanical movement
US2614410 *Feb 18, 1947Oct 21, 1952Apex Electrical Mfg CoWashing machine provided with vibration dampener and mounting
US2645108 *Dec 20, 1948Jul 14, 1953Maytag CoCombined washing machine and centrifugal fluid extractor
US2645111 *Nov 5, 1947Jul 14, 1953Whirlpool CoWobble plate laundry machine
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2974515 *Feb 4, 1957Mar 14, 1961Maytag CoWobble agitator
US5504955 *Mar 24, 1995Apr 9, 1996Whirlpool CorporationMethod of rinsing in a vertical axis washer
US5507053 *Mar 24, 1995Apr 16, 1996Whirlpool CorporationMethod of washing in a verticle axis washer
US20030158783 *Feb 15, 2002Aug 21, 2003Mao-Yu LinWeb shopping system and method
Classifications
U.S. Classification68/23.3, 74/47, 68/131, 74/49, 68/23.6
International ClassificationD06F13/08, D06F13/00
Cooperative ClassificationD06F13/08
European ClassificationD06F13/08