US2136259A - Dishwashing apparatus - Google Patents

Description

Nov. 8, 1938. F. A. WALKER 2,136,259

DISHWASHING APPARATUS Filed June 22, 1934 .l2 s sheets-sheet 1 4 sa zo 55 j 5| 2a 55 I Y1 56! l 27 55a 56 M U 17 y;

hwentor:

H Attornenrg'.'

Forrest,- A. Walker,

Nov. 8, 1,938.A y l F A. WALKER 2,136,259l

msx-WASHING APPARATUS Filed June 22, 1954 3 Sheets-Sheet 2 lmvrwi-OP: Forrest A. Wal-ker,

if www His Attorrweg.

Nov. s, 1938. F. A. WALKER 2,136,259

DISHWASHING APVPARATUS.

Filed June 22, 1934 5 Sheets-Sheet 3 Figs.

Inventor: Forrest: A. Waker,

l#M17 6. WM

His At'tcrneg.

Patented Nov. 8, 1938 2,136,259 DlsHwAsmNG APPARATUS Forrest A. Walker, Oak Park, Ill., assignor, by mesne assignments, to Edison General Electric Appliance Company, Inc., a corporation of New York Application June z2, 1934., semi No. 731,90;

'I'his invention relates to dishwashing apparatus, more particularly `to apparatus for supporting glassware, dishes and the like, in mechanical dishwashing machines, and it has for its object the provision of improved apparatus of this character.

'I'his invention is particularly applicable to mechanical dishwashing apparatus wherein a cleansing fluid,` such as water, is circulated or hurled through the washing vat by suitable power-driven means, such as a motor-driven impellen-so as to eilect a Washing actionon the utensils supported in the vat.

In certain known dishwashing machines of this character, dish-supporting trays are provided formed of open-work wire construction. Usually there are two trays, one located in the lower portion of the vat and the other in the upper portion of the vat immediately above the lower rack. vThe motor-driven impeller is positioned below thelower rack and is arranged as it revulves to engage cleansing fluid so as to hurl the -iluid upwardly and outwardly circumferentially through the racks.

The lower rack is usually arranged to hold platters, large saucers, common dinner plates and the like, while glasses, cups, etc. are placed in the upper rack. The lower rack supports the iiat plate-like members in such positions and at such angles that these members not only receive the direct action of the fluid hurled upwardly by the impeller so as to be cleansed, but also act as deiiectors or bailies for the Water so as to direct the water up into the glasses, cups, etc. placed in the superimposed top tray to effect an eflcient cleansing action on these utensils.

Some diiculty has been experienced with this arrangement because oftentimes there are not enough dishes in the bottom tray to deflect and 40 distribute the water properly to the dishes in the upper tray.` Moreover, at times, it is desirable to wash glasses and thelike in the upper tray when there `are no dishes at all in the lower tray to act as deectors.

45 It is an object of this invention to provide water distributing members in the vat arranged to deflect or distribute the water that is hurled upwardly by the impeller into the upper tray so that the glassware, etc. placed within the upper tray will be properly washed, irrespective of whether or not there are any flat dishes in a lower tray beneath the uppertray.

In accordance with this invention, in one form thereof, a lower tray is provided formed of openwork wire construction. 'I'his tray js provided with a plurality of vertically arranged metallic bailies arranged to deiine compartments for receiving at dishes and the likeso asto support into the articlesA placed within the upper rack.

In another form of this invention, there is provided a suitable supporting framework forq the baiiies arranged to be tted in the lower por- V10 tion of the vat. This framework in this 'case is not arranged to support dishes within it,.as in" the first form, but preferably will be arranged to support the upper tray in proper position within the vat. This other form is described and l5 claimed ln my copending application, Serial No. 193,909, filed March 4, 1938, and which application is a division of the instant application.

For a more complete understanding of this invention, reference should be had to the accom- 20 panying drawings in which Fig. 1 is an elevation of dishwashing apparatus embodying this invention, parts being shown in section and parts being broken away so as to illustrate certain details of construction; Fig. 2 is a fragmentary 25 horizontal sectional view taken on an enlarged scale of a dish-supporting trayV used in the apparatus of Fig. 1 and arranged in accordance with this invention; Fig. -3 is a fragmentary vertical sectional view taken through the line 3--3 30 of Fig. 2 ;l Fig. 4 is a view similar to Fig. 1, but illustrating a modified lform of this invention; Fig. 5 is a fragmentary plan view of the upper rack used in the washing apparatus of Fig. 4; Fig. 6 is a fragmentary plan view of a part of 35 the apparatus used in the washing apparatus of Fig, 4; and Figs. '7 and.8 are elevation and bottom views of a detergent container used in one form of this invention.

Referring more particularly to Figs. 1 to 3 40 inclusive, this invention has been shown in oneV form as applied to mechanical dishwashing apparatus comprising a vat and a motor-driven impeller in the lower portion of the vat arranged to circulate cleansing uid upwardly and outwardly in the vat. As shown, the dishwashing apparatus comprises a vat I0 supported in an upright vertical position by means of a top frame la. to which it is secured by clamps lob. The vat lll has a circular cross-section, but it is to be understood that the vat may have any suitable cross-section, such as a rectangular cross-section. Y

'I'he vat l Il is provided with an inverted frustoconical bottom wall Il, preferably formed inte- 545 grally with the side -walls of the vat. A suitable removable cover I2 ls provided for the vat III, this cover being provided with a handle I3 whereby lt can be conveniently removed and replaced. While the vat together with its bottom wall and cover may be formed of any suitable material, it is preferable to form them from some suitable sheet metal, such as a rust-resistant steel, which preferably will be plated or-enameled.

Mounted within the conical wall II is an impeller I4 arranged when rotated to engage and hurl a cleansing fluid, such as hot water, upwardly and outwardly in the vat with a more or less whirling circumferential motion. The impeller may have any suitable construction, the imnportant feature being that the impeller be given a shape such that the cleansing fluid in the lower portion of the vat will be thrown upwardly and outwardly in an ellicient manner by the rotary motion of the impeller. The impeller will be formed of any suitable material, such as castaluminum or pressed steel. The impeller I4 is driven by a suitable electric moton I5.

A suitable cleansing fluid, such as hot water, is supplied to the vat by any suitable means, such as by means of a conduit I6 communicatingv with a fluid supply source and with the vat.

The vat is provided with a suitable drainage outlet (not shown) which is arranged in the bottom wall II as close to the bottom of the vat as is practical. This port communicates with a drainage conduit I'I. It will be understood that this conduit communicates with a suitable drain valve housing (not shown) in which a suitable drain valve will be provided for controlling the drainage of huid from the vat. This drain valve housing and valve form no part of this invention and it is believed to be unnecessary, therefore, to describe them in detail.

In the vat I0 are a pair of open-work trays or baskets 20 and y2! arranged to receive dishes and the like so as to support them in proper positions to be cleansed by the water which is hurled upwardly and outwardly by the impeller. The rack 20 is placed within the lower portion of the vat directly above the impeller, while the rack 2I is positioned in the upper portion of the vat in superimposed relation with respect to the lower rack 2l.

It is contemplated that the lower rack will be used to hold platters, dinner plates and other like ilat dishes and utensils, whereas the upper rack will be used to support glasses, cups and the like.

The upper rack 2I, as shown, is arranged to supi port glasses and the like, indicated in dotted lines in Fig. I, in an inverted position to receive water which is hurled upwardly and outwardly in the vat so as to be cleansed. The upper rack is supported in the vat by means of a plurality of arms 22 which at their upper ends engage the inner surfaces of inclined walls 23 ,arranged on the top frame Illa.

The lower rack 20 arranged in accordance i. .th this invention is provided with suitable means for engaging the water hurled upwardly by the impeller and delecting it upwardly in the proper directions through the upper rack 2 I so as to eiect an elllcient cleansing action on the utensils supported within this upper rack.

The lowe. rack, as shown, is formed of a. pair of ring- shaped wires 24 and 25 arranged in substantially concentric arrangement (Fig. 2), and being positioned substantially in the same plane, as clearly shown in Fig. 3. Surrounding this pair of rings is a ring 26 of larger diameter arranged with its axis substantially coaxial with the axes of the pair of concentric rings 24 and 25. This g latter ring 26, however, is positioned in a plane somewhat above the plane of the rings 24 and 25, but parallel withthis latter plane. The ring 26 is secured to the outer ring 25 of the pair by means of a plurality of spaced radially positioned wires 21 which at their ends are secured in any suitable manner to the rings 25 and 26, such as by spot welding.

The ring 24 of the inner pair of rings is considerably smaller than the ring 25 which surrounds it, as shown in Fig. 2. Arranged between the inner pair of rings are a plurality of metallic bales or vanes 28 arranged generally radially of the rings, as shown in Fig. 2. These baille members 28, as shown in Fig. 2, have a curved shape and are secured at their inner and outer ends to the rings 24 and 25, respectively, at substantially uniform intervals circumferentially of the rings so as to dene a plurality of circumferentially spaced compartments 30 for receiving platters, plates and like ilat dishes. The members 28 are supported at an angle to the vertical. The angle at the inner ends of the members may be approximately 5 to the vertical, the angle increasing to approximately 25 at the outer ends of the members. The compartments 3U, it will be observed, are arranged so as to support the dishes in a generally upright position and substantially tangentially to the inner ring 24. The baffles 28 preferably will be supported in an elevated position with reference to the plane of the rings 24 and 25 by means of vertically arranged posts 3| arranged at the inner and outer ends of the ballles and secured to the bailies and to the inner and outer rings 24 and 25 respectively in any suitable manner, as by spot welding.

A suitable upright open-work circular wall is provided at the outer ring 26. This wall is delined by a plurality of upright wlre members 33 spaced at substantially uniform intervals circumferentially of the outer ring 26. These members 33 at their upper ends support a ring member 34 having a diameter substantially equal to the diameter of the outer ring member 26. The members 33 are secured to the rings 26 and 34 in any suitable manner, as by spot welding. Secured to the lower ends of the upright members 33 are a plurality of feet or supporting legs 35. These legs are secured at their upper ends to the upright members ln any suitable manner. For this purpose, the lower ends of the upright members 33 are extended somewhat below the plane of the ring 26 and these ends are provided with eyelets 33a. The upper ends of the legs 35 are provided with corresponding eyelets 35a and the two eyelets are secured together by means of bolts 36. The legs are suiciently long so that when the tray is positioned within the lower portion of the vat I0, they will support the tray in an elevated position with reference to the impeller I4. Preferably, the legs 35 will support suitable rollers 37 at their lower ends, as clearly shown in Figs. l and 3.

The entire bottom of the tray is covered by means of a screen member 38 formed of wires woven together in mesh form, as clearly shown in Figs. 2 and 3. This screen, as shown, has a substantially circular shape to conform to the contour of the tray. The screen member is secured to the rings 24 and 25 and to the outer ring 26 in any suitable manner, as by, spot welding. As shown, it is preferable to place this screen below the lower surfaces of the rings 2li and 25 and to wrap its peripheral edge around the ring member 28.

It will be observed in view of the foregoing constructionthat the lower rack provides aV plurality of compartments 30 arranged radially of the rack,

the plates at an angle to the vertical, and preferably they will be positioned so that their upper vsurfaces face the bottom of the vat.

In using the trays, it will be understood that they may be loaded or unloaded while positioned within or without the vat. When it is desired to wash the dishes, the lower rack is supported in the vat upon its legs 31and will be loaded with flat platters, plates and the like, while the upper rack 2| will be loaded with the glasses, e`tc.

After the racks have been loaded, the cover I2 0f the vat will be closed, the drain valve closed and cleansing water supplied to the vat. The impeller will then be operated to wash the dishes.

Heretofore, the compartments of the lower rack for the plates and platters were defined by openwork construction and the plates and platters themselves were in the main relied upon to deflect 0r direct the water from the impeller upwardly through the upper rack 2| solas to wash the dishes therein. In the lower rack arranged in accordance with this invention, the baille members 28 perform-this function. Thus, the water is distributed or deflected upwardly into the upper rack 2|, irrespective of Whether or not the compartments 3|! are loaded with dishes. This feature is quite important, because oftentimes itis desirable to wash merely a batch of glasses when there are a limited number `or no dishes or platters at all available to be washed in the lower rack. y 'I'he bailles28 arranged in accordance with this invention will emciently deflect or guide the water hurled by the impeller up into the dishes placed within the upper rack so as to effect an eiiicient washing action.

The bodies of the baiiies 28, it will be observed, are directed substantially tangentially to the ring 24, while their inner ends are curved inwardly to met the ring, as clearly shown in Fig. 2. The plates placed within the compartments formed by the baiiles will be supported substantially tangen-` tially to the ring 24. As the dishes are placed with V their upper faces directed clockwise and as the impeller |4 shown is rotated. in a counterclockwise direction as viewed in Fig. 2. their soiled faces will 'be subjected directly to'the whirling body r water projected upwardly and circumferentially by the impeller. The plates or bailles. as the case may be, however, break up the whirling body of water and deect it directly upwardly into 'the' open vessels placed within the upper rack 2|.

It is not necessary that the bailles 28 be placed in the exact position shown in Fig. 2, or that they be given the exact curved shape shown in Fig. 2. It is importanthowever, that the bailles be positioned so as to support the flat dishes in generally upright planes, whereby their faces will be presented more or less to the whirling fluid which is agitated by the impeller so that they will be washed eiilciently. It is also desirable that the vanes 28 be positioned in generally upright planes substantially tangentially to the inner ring 24, the axis of which is coaxial with theaxis of the impeller, so that the vanes are supported in general in a direction approaching the tangent to the whirling body of water agitated circumferentially' by the impeller. By reason of this arrangement, the blades engage the whirling mass of water to deflect it in a generally upward direction through the upper tray. If the impeller -|4 were arranged to rotate in the reverse direction the blades 28 would be reversed.

In Figs. 4, 5 and 6, there is illustrated a form of vthis invention wherein the bailles are supported on a framework which does not at the same time function to support dishes. In this case the vat is of' square cross-section, but it may be circular. As shown in Figs. 4, 5 and 6, there are a number of bailles 40. These bailies are supported in concentrically arranged inner and outer rings 4| and 42 in substantially the same positions relative to the rings as are the bailies 28 of Figs. 1 to 3 supported relatively to their rings 24 and 25. The rings 4| and 42, however, are somewhat smaller in diameter than theY rings 24 and 25, and the ringV 4 is in a plane elevated somewhat with respect to the plane of the ring 42, as shown in Fig. 4. The inner and outer ends of the baiiles are provided with circumferentially arranged extensions .44 and 45 respectively bearing on the outer and inner surfaces of the rings 4| and 42, as shown in Figs.

`4 and 6, and secured to these members in any suitable manner, as by welding.

The rings are supported by four wiremembers 46 spaced apart approximately 90 about the outer ring 42 and provided with portions 41 arranged substantially normal to tangents to the ring at the points of engagement of the wires with the ring. The inner ends of the wires have reduced extensions 48 received in apertures provided for them in the ring, and are secured to the ring in any suitable manner as bv butt welds.

The normal portions 41 of the wires 46 merge into portions 50 that extend downwardly` at an angle to the normal portions, as shown in Fig. 4. and these portions, in turn, curve into upright portions 5|. These portions 5| at their upper ends are turned inwardly to form horizontal portions 52 lying in the vertical planes of the portions 41 and 50, as shown in Fig. 6.

Substantially half-way up the vertical portions 5| is a closed square wire ring 53 secured to the inner surface of the portions 5| in-any suitable manner, as by welding. And arranged at the corners of this square ring are, wire reenforcing members 54. These members have an inverted U- shape and are arranged t-o straddle thecorners of the wire 53,. as shown in Fig. 6. The lower ends of these members are welded or otherwise suitably secured to the ring 53.V The horizontal portions 52 of the 'wires 46 are supported by these members 54, the latter members having depressed curved portions 55 in the bases of the U for receiving the wires 5|. 'The wires 5| and 54 preferably will be welded together.l

The framework supporting the' bailles 40 is completed by feet 56 secured to the wires 46 and square ring 6I arranged symmetrically about the ring G0, as shown in Fig. 5, and in a plane somewhat below it, as shown in' Fig. 4.

A larger square `ring 62 is arranged symmetrically with and about the inner square rings and 6l, but in a plane somewhat above the planes of these rings, as shown in Fig. 4. The rings 60, 6| and 62 aresecured together by means of wire corner stays 63 and crossy stays 64 arranged at the corners of the tray. and in one central axis of the tray, respectively, as shown in Fig. 5. The wire stays have approximately an L-shape, as shown in Fig. 4the long legs of the stays bearing under the rings 60 and 6I and extending outwardly of the rack to the short legs which extend vertically upwardly tangentially to the wire 62, as shown. The stays where they connect the wires 60, 6| and 62 will be secured to the Wires in any suitable manner, as by welding.

The framework of the upper tray is completed by a pair of handles 65 secured at the opposite sides of the tray, as shown in Figs. 4 and 5. The handles in side elevation have approximately an L-shape, as 4shownin Fig. 4, and in iront elevation have a substantially U-shape. The lower ends 65d of the U-shaped handles are turned inwardly and slightly inclined upwardly where they are secured to the intermediate ring 6i in any suitable manner, as by welding.

The two vertical portions 65h of these handles, as shown,` extend upwardly in the vertical planes of the associated sides of the wire 62 until they reach the wire and then incline inwardly somewhat toward the center of the rack, as shown in Fig. 4, and toward y'each other, as shown in Fig. 5. These vertical portions 65h are joined by means of horizontal portions 65e.

Supported within the framework just described is a suitable tray frame assembly which comprises a pair of octagonal shaped wire rings 66 and 61, arranged one above the other and having a size just slightly smaller than the cuter square ring B2, as shown in Fig. 4. 'I'he sides of the octagonal rings 66 and 61 at the corners of the tray are somewhat shorter than the remaining four sides, as clearly shown in Fig. 5. The two rings 66 and 61 are secured together in vertically spaced relation, as shown in Fig. 4, by means of vertical wires 68 arranged at each corner of the Octagon and in the middle of the longer side members of the Octagon, as clearly shown in Fig. 5. These Wires are secured at their upper and lower ends to the wires 66 and 61 in any suitable manner, as by welding.

A wire screening member 10 is placed over the entire bottom of the upper tray. This member 10, as shown, rests upon the upper surfaces of the rings B0 and 6| and extends under the lower octagonal ring 6E and thence upwardly in the vertical planes of the-rings 66 and B1 to the upper ring 61, where the edges of the screen are bent over and around the upper horizontal ring 61, as shown in Fig. 4. It will be observed that this arrangement of the screening member 1i! provides a bottom wall for the upper tray tapering downwardly from the center of the tray to its eight vertical side walls.

Arranged substantially in the central portion of the tray is a suitable soap or cletergentccntainer 1i. This container comprises a cylindrical body portion 12 over the mouth or lower end of which is positioned a closure member 13. This closure member, as shown, is secured in spaced relationwith the lower edge of the cylinder 12 by means of legs 'I4 attached to the lower edge of the container 12 and directed through apertures 15 provided for them in the closure mem.- ber. ,The legs are turned inwardly, as shown, and are secured to the closure member. Arranged above the closure member is a conical member 16 arranged in an inverted position, as shown in Fig. 7, and secured tothe closure member by means oi' a flange 11 attached to the cone. 'I'his flange is provided with apertures receiving the legs 14. The upper end 18 of the cylinder is ilared outwardly and terminates in upright walls 19 which form a square, open at the corners. It will'be understood that a suitable detergent will be placed within the cylinder 12 on the conical wall 16 and that when the impeller 80 is operated, some of the water hurled upwardly through the vat will gravitate into the cylinder 12 through its upper open end and will wash detergent from the cylinder through the' space between its bottom and the closure member 13.

While the baies 40 of the lower open framework may have any suitable shape, it is important that they be given a shape such that the water which is hurled circumferentially and upwardly by the impeller 80 be engaged by the baies so as to be directed upwardly and outwardly and distributed substantially uniformly over the bottom of the wire screening 10 upon which the vessels in the upper tray are placed. In the particular form shown, there are twelve cailles spaced substantially 30 apart. Preferably, the outer ends of the baiiles will be advanced with respect to the inner ends of the baiiles in a clockwise direction by an angle of approximately 52. In other words, the outer end of each baille indicated by the letter A (Fig. 6) will be in advanceof the inner end of thebailles indicated by the let-v ter B, by an angle of 52. The blades Will also be inclined upwardly from their lower edges so that their faces incline forwardly in a counterclockwise direction, as viewed in Figs. 4 and 6.

` The inclination of the blades and the curvature,

of course, depends upon the direction of rotation of the impeller 80 which, as viewed in Fig. 4, is in the counterclockwise direction. If the impeller were arranged to rotate in the reverse direction, the arrangement of the blades 40 would be reversed.

In the operation of the washing apparatus ofv Figs. 4, 5, and 6, it will be understood that the` lower frame will be placed in the lower portion of the vat and the upper tray will be placed upon the lower tray so that it rests upon and is supported by the U-shaped members 54, and the horizontal portions 52 of thewire members 46. Then the upper tray will be loaded with the glassware, cups and the like with their basins facing downwardly in the vat. When the impeller 80 is operated it will circulate the water upwardly and outwardly circumferentially through the vat, the whirling mass of water striking the vanes or bafiles 40 so that the water is' deflected upwardly and outwardly and distributed substantially uniformly over the screening 10.

The form of my invention disclosed in Figs. 4-6 is described and claimed in my above-mentioned copending divisional application, Serial No. 193,909.

While I have shown particular embodiments of my invention, it will be understood, of course, that I do not Wish to be limited thereto since many modications may be made, and I, therefore, contemplate by the appended claims to cover anyl'lc such modifications as fall within the true spirit and scope of my invention.

What I claim as new and desire to secure by Letters Patent of the United States, is:

1. Dishwashing apparatus comprising a vat, a rotatable impeller in. the lower portion of said vat and in its central axis arranged to hurl cleansing liquid upwardly and outwardly in the vat, an open-work dish-supporting tray in the vat above said impeller so that the liquid hurled by the impeller is directed upwardly and outwardly through the tray, a plurality of xed baffles within said tray arranged generally vertically and positioned in the tray to provide a plurality `of circumferentlally arranged compartments in the tray for receiving dishes and the like, the compartments being arranged substantially symmetrically to the central axis of the vat, and the baiiles` functioning to support the dishes and also positioned with respect to the impeller to deflect the liquid hurled upwardly by the impeller to direct it upwardly in the vat in predetermined directions, and means supporting the tray in the vat so that the tray and the bailles supported in it do not move under the impact of the liquid on the bailles.

2. In combination with dish-washing apparatus having a vat, a power-driven liquid circulating impeller within the lower portion of said vat arranged to engage cleansing liquid and hurl it upwardly and outwardly circumferentially with a whirling motion in said vat and a pair of superimposed open-work dish-supporting trays in said vat' above said impeller, the open-work tray constituting the lower of said trays comprising aclosed wire member, an open-workbottom wall for said tray attached to' said member, a second smaller closed wire member within said first wire member attached to said bottom wall, and a plurality of spaced metallic baiiie Amembersl having their ends attached to said pair of closed wire members respectively, said baiiie members supported by said closed wire members in a generally vertical position so as to define a plurality of compartments for receiving dishes and the like and so as to present surfaces in the path of the cleansing liquid hurled upwardly by said impeller to direct said liquid in predetermined directions upwardly through the rack above it.

3. A dishwashing apparatus comprising a vat and an impeller in the lower portion of said vat arranged to hurl cleansing fluid upwardly'and outwardly in said vat, an open-work dish-supporting tray Iin said vat comprising a pair of concentric rings lying substantially in the same plane, a ring of larger diameter having its axis coincident with the axes of. said pair of rings but lying in a plane elevated with respect to the plane of said pair of rings, means rigidly connecting said outermost ring to the outer of said pair of rings, an open-work mesh bottomlmember secured to said rings, wire members defining an upright marginal wallat the outermost ring, a plurality of metallic upright baiiles arranged generally radially of said inner ringameans securing the ends of said baiiles to said pair ofv rings so as to Ysupport said baffles at an angle to the vertical, thereby defining compartments for receiving plates, dat dishes and the like and supporting said dishes at an angle to the vertical in a position substantially tangentially to the inner .one of said pair of. rings, and further, to function as vanes to'defiect uid agitated by said impeller in predetermined directions upwardly in said vat.

4. Dishwashing apparatus comprising a vat, an impeller in said vat rotatable for circulating cleansing liquid upwardly in said vat, an openwork utensil supporting rack in the upper portion of said vat above said impeller, an openwork supporting means in said vat between said rack and impeller through which liquid from said impeller is directed, a plurality of baiiles on said supporting means` arranged generally radially with respect to the central vertical axis of said vat and having liquid engaging'surfaces arranged generally vertically with the inner ends of said bailles inclinedto the vertical at a smaller angle than the outer ends, and means securing said bailles to said supporting means. l

5. Dishwashing apparatus comprising a vat, a liquid circulating impeller rotatable `in said vat, an open-work Adish-supporting rack in said vat above said impeller, a pair of substantially con- Y centric rings above said impeller and below said rack, a plurality of metallic baffles provided with liquid-engaging faces spaced at intervals circumferentially of the rings and extendinggenerally radially of said rings, and means connecting said baffles to said rings so as to support them in an upright position at an angle to the vertical with the inner ends of said baiiles inclined at a smaller angle to the vertical than the outer ends.

6. Dishwashing apparatus comprising a vat, a liquid circulating impeller rotatable in said' vat, an openwork dish-supporting rack in said vat above said impeller, a pair of Substantially concentric rings above said impeller and below said rack, a plurality of metallic bailles provided with liquid-engaging faces `spaced at intervals circumferentially of .the rings and extending generally radially of-said rings, and means connecting said bames to said rings so as to support them in an upright position at an angle to the vertical with the inner end of said baiiles inclined at a smaller angle to the vertical than the outer ends and the baiiles curving in the direction of rotation of said impeller.

7. Dishwashing apparatus comprising a\vat, a rotatable impeller in said vat for circulating cleansing liquid in the vat, a supporting member within the vat, and a plurality of baflles on said supporting member arranged generally radially to the central vertical axis of the vat and arranged generally vertically in said vat with the inner ends of the bailles inclined at a smaller angle to the vertical than the outerends and the bailles curving in the direction of. rotation of the impeller.

8. Dishwashing apparatus comprising a vat, a rotatable impeller in said vat for circulating cleansing liquid in the vat, a supporting member within the vat, and a plurality of bailies on said ends at an angle of approximately 25 to the vertical.

FORREST A. WALKER.

axis of the vat and ar-l

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