US2657697A - Dishwashing apparatus and cabinet structure - Google Patents

Description

Nov. 3, 1953 F. A. WALKER DISK-{WASHING APPARATUS AND CABINET STRUCTURE Filed Oct. 30, 1948 7 Sheets-Sheet 1 INVENTOR. Forrest A. Walker NOV. 3, 1953 WALKER 2,557,697

DISHWASHING APPARATUS AND CABINET STRUCTURE Filed 001- 30, 1948 7 Sheets-Sheet 2 FIG. 2

IN V EN TOR.

Fo'rrest A. Walker Attys,

Nov. 3, 1953 F. A. WALKER 2,657,697

DISHWASHING APPARATUS AND CABINET STRUCTURE Filed Oct. 30, 1948 7 Shets-Sheet 3 FIG. 4

INVENTOR. ForresT'A Walker An a;

Nov. 3, 1953 WALKER 2,657,697

DISHWASHING APPARATUS AND CABINET STRUCTURE Filed Oct. 30, 1948 7 Sheets-Sheet 4 lor r 88 7 77/" 73- i 37 9 9| 95 I so Son/1 2 INVENTOR.

I Forrest A. Walker DISHWASHING APPARATUS AND CABINET STRUCTURE Filed Oct. 30, 1948 7 Sheets-Sheet 5 FIG. 7

. O] R Forrest A. Walker FIG. 8

Attvs.

Nov. 3, 1953 F. A. WALKER DISHWASHING APPARATUS AND CABINET-STRUCTURE 7 She ets-Sheet 6 Filed Oct. 30. 1948 Nov. 3, 1953 F. A. WALKER 2,657,697

DISHWASHINC APPARATUS AND CABINET STRUCTURE Filed Oct. 30, 1948 7 Sheets-Sheet 7 FIG. 13

JNVENTOR. Forrest A. Walker Patented Nov. 3, 1953 DISHWASHING APPARATUS AND CABINET STRUCTURE Forrest A. Walker, Wheaton, Ill., assignor to General Electric Company, a corporation of New York Application October 30, 1948, Serial N 0. 57,448

24 Claims.

The present invention relates to washing apparatus, and more particularly to improved dishwashing apparatus of the general character of that, disclosed in the co-pending application of Forrest A. Walker, Serial No. 27,002, filed May 14, 1948, now Patent No. 2,620,811, granted December 9, 1952.

This dishwashing apparatus disclosed in the Walker application mentioned is of the timed washing cycle type that performs automatically and in predetermined sequence given steps including spraying, washing, rinsing and drying of the dishes and other utensils contained therein. This apparatus comprises a cabinet housing a vertically disposed vat including a front opening and a door for closing the opening, the door being mounted for movements between a substantially vertical closed position and a substantially horizontal open position. In this apparatus the cabinet carries a flexible sealing gasket formed of rubber, or the like, that is disposed about the top and sides of the vat adjacent to the front opening thereinto, which gasket cooperates with appropriate flanges carried by the corresponding por- V tions of the door in order to seal the front opening when the door occupies its closed position, thereby to prevent the escape from the front opening of the washing fluid contained in the vat as it is operated and circulated within the vat incident to carrying out the various steps mentioned.

While this dishwashing apparatus is entirely satisfactory and efficient in operation, the gasket for sealing the front opening must be maintained in good condition to prevent the escape of the washing fluid from the vat, rendering occasional replacement of the gasket necessary. Also, since the interior of the vat is otherwise closed, the front door must comprise special ventilating structure to permit adequate drying of the dishes, which construction renders the door more expensive to manufacture than is desirable.

Accordingly, it is a general object of the pres ent invention to provide washing apparatus including. a vat of the front opening type, having a door, wherein the vat and the door are so constructed and arranged that open ventilation of the interior of the vat is provided through the front opening about the door when the door occupies its closed position and that the washing fluid contained in the vat does not escape from the vat through the front opening notwithstanding the absence of a seal between the front opening and the door.

Another object of the invention is to provide 2 washing apparatus including a vat having a for.- wardly directed doorway terminating in a front opening having a front door, that incorporates improved hinge mechanism for mounting the front door in the doorway for movements with respect to the front opening between open and closed positions.

Another object of the invention is to provide washing apparatus of the type noted that incorporates improved hinged mechanism for mounting the front door in the doorway for movements with respect to the front opening between a substantially vertical closed position and a substantially horizontal open position, which mechanism accommodates complete removal of the front door from the doorway when it occupies an inter mediate position.

Another object of the invention is to provide washing apparatus of the typenoted that incorporates a vat of improved construction and arrangement.

Another object of the invention is to provide washing apparatus of the type noted that incorporates a front door of improved construction and arrangement.

A further object of the invention is to provide washing apparatus of the type noted that incorporates a receptacle mounted for movements through the doorway into and out of the vat over the front door in its open position, wherein the receptacle carries baffle structure cooperating with baffle structures respectively carried by the vat and by the front door to prevent the escape through the front opening of washing fluid contained in the vat.

Further features of the invention pertain to the particular arrangement of the elements of the dishwashing apparatus, whereby the above-outlined and additional operating features thereof are attained.

The invention, both as to its organization and method of operation, together with, further objects and advantages thereof, will best be under- Stood by reference to the following specification taken in connection with the accompanying drawings, inwhich Figure 1 is a front elevational view, partly broken away, of dishwashing apparatus embodying the present invention; Fig, 2 is a vertical sectional view of the dishwashing apparatus, taken in the direction of the arrows along the line 2-2 in Fig. 1, illustrating the construction and arrangement of the vat, the receptacle arranged within the vat and the associated front door; Fig. 3 is a horizontal sectional view, partly broken away, of, the dishwashing apparatus,

taken in the direction struction of the vat, the receptacle arranged 1 within the vat and the associated front door; Fig.

4 is an enlarged fragmentary vertical sectional view of the dishwashing apparatus, taken in the direction of the arrows along the line 4- 3 in Fig.

3, illustrating the arrangement for mounting the receptacle within the vat and indicating the movements of the front of the receptacle in response to movements of the associated front door; Fig. 5 is an enlarged fragmentary horizontal sectional view, similar to Fig. 3, of the dishwashing apparatus, illustrating the front of the Vat and i the associated front door in its open postiion; Fig.

6 is an enlarged fragmentary vertical sectional view of the dishwashing apparatus, taken in the direction of the arrows along the line 6+6 in Fig.

5, illustrating the construction of the lower front portion of the vat and the associated front door in its open position; Fig. 7 is a fragmentary vertical sectional view of the dishwashing apparaing the construction of the left-hand side of the front doorway into the vat and the adjacent portion of the left-hand side wall of the vat, and indicating the associated front door in its open position; Fig. 9 is a fragmentary vertical sectional View of the lower portion of the dishwashing apparatus, similar to Fig. 2, illustrating the position of the receptacle within the vat when the associated front door occupies its closed position; Fig. 10 is a fragmentary vertical sectional view of the lower portion of the dishwashing apparatus, similar to Fig. 9, illustrating theposition of the receptacle within the vat when the associated front door occupies its open position; Fig. 11 is a fragof the arrows along the line 3-3 in Fig. 2, further illustrating the conmentary vertical sectional view of the lower portion of the dishwashing apparatus, similar to Figs.

9 and 10, illustrating the receptacle in its partially withdrawn position with respect to the vat and the associated front door in its open position; Fig. 12 is a fragmentary vertical sectional view of the lower portion of the dishwashing apparatus, similar to Figs. 9, 10 and 11, illustrating the receptacle in its fully withdrawn position with respect to the vat and the associated front door in its open position; and Fig. 13 is an exploded side elevational view of the receptacle of the dishwashing apparatus, illustrating the three component and detachable parts thereof.

Referring now to Figs. 1 to 3, inclusive, of the drawings, the dishwashing apparatus if! there illustrated, and the embodying features of the present invention, is of the general character of that disclosed in the previously mentionedWalker application and comprises a cabinet ll provided with top and bottom walls [2 and is, opposed side walls is and l5, a rear wall It and a front wall l 3 having an opening I 3 formed in the upper central portion thereof. lhe front wall I! carries a front panel I!) having an opening 25 formed in the upper central portion thereof, the openings l8 and is being arranged in substantial registry. The general outline of the panel l9 con orms t that of the front of the-cabinet H, whereby the to and sides of the panel is are disposed substantially flush with the top wall i2 and the respective side walls i i and 55. The front wall l l is rearwardly offset adjacent to the bottom wall providing connecting substantially vertical and horizontal panels 2! and 22 adjacent to the lower front to the cabinet I I in order to define a footreceiving recess, permitting a person to work close to the front panel !9. Finally, the bottom of the panel I9 is disposed substantially flush with the horizontal panel 22 lending a finished appearance to the front of the apparatus ill.

The cabinet i 5 houses a substantially vertically disposed vat 23 arranged in the upper central portion thereof and secured in place in any suitable manner, not shown. The vat 23 comprises top and bottom walls 2 and 25, opposed side walls as and 2! and a rear wall 28, the top and bottom walls 24 and 25 and the side walls 25 and 2'! terminate in a forwardly directed doorway 29 having a front opening 3i! arranged in substantial registry with the front openings l8 and 29. More particularly, the doorway 29 comprises a top flange ti and opposed side flanges 32 and 33, while the bottom wall 25 is provided with a flange 34 terminating in an upwardly and outwardly extending ledge or lip 35 extending between the side flanges 32 and 33. The ledge '35 is directed first upwardly and outwardly and then downwardly terminating adjacent to the front opening 3E! of the doorway 29, whereby the upper edge of the ledge 35 is disposed considerably above the bottom flange 34, and consequently the bottom wall 25. A substantially centrally disposed sump 35 is formed in the bottom wall 25 and communicates with a downwardly embossed depression or groove 37 formed substantially centrally in the bottom flange as and extending forwardly toward the central portion of the ledge 35. Further, an upstanding inverted substantially U-shap'ed inwardly embossed vat rib 38 is formed in the top wall 26 and the side walls 25 and 2'1 at the junction thereof with the top flange iii and the side flanges 32 and 33, the vat rib 38 including an inwardly directed top portion 39 joining the top wall 24 and the top flange 3i and inwardly directed side portions or legs it and ll respectively joining the side walls 26 and 21 and the side flanges 32 and The ends of the legs to and ii terminate just above the bottom flange 34 and well behind and below the ledge 35.

As best shown in Figs. 3 and 8, the left-hand side wall 26 carries baflle structure that cooperates with the leg .48 of the vat rib 38 for the purpose of deflecting washing fluid on the side wall 26 away from the doorway 29 as explained more fully hereinafter. This baffle structure comprises a first upstanding inwardly embossed baille 52 disposed rearwardly of and substantially parallel to the leg All of the rib 38 and a second upstanding inwardly embossed baiile 43 disposed rearwardly of and substantially parallel to the baffle 42. similarly, as best shown in Figs. 3 and 7, the right-hand side wall2l carries baflle structure that cooperates with the leg 4| of the vat rib 38 for the purpose of deflecting washing fluid on the side wall 21 away from the doorway 29 asexplained more fully hereinafter. This baflle str ture comprises a first upstanding inwardly embossed baffle 44 disposed rearwardly of and sub stantially parallel to the leg 4| of the rib 38 and a second upstanding inwardly embossed bafile d5 disposedrearwardly of and substantially parallel to the baffle 44. Also, two inwardly directed and substantially parallel opposed guide members 46 and 41 are respectively embossed in the side walls 25 and 21, as best shown in Figs. 3, 4, 7 and 8. The guide members 46 and 41 extend, substantially horizontally, declining slightly toward the rear wall 28, and are disposed well above the bottom wall 25. More particularly, the guide member 46 extends below the baflle 43, terminates below the baffle 42 behind the leg 46 of the rib 38, and projects inwardly with respect to the leg 40. Similarly the guide member 41 extends below the baffle 45, terminates below the baflle 44 behind the leg 4! of the rib 38, and projects inwardly with respect to the leg 4!. The rear ends of the guide members 45 and 41 terminate adjacent to the rear walls 25 and cooperate in supporting a receptacle or dish-rack provided in the vat 23 and described more fully hereinafter. Preferably, the component parts of the cabinet i l as well as the panel l9, are formed of sheet steel and the exterior surfaces thereof are provided with a suitable enamel coating to lend the apparatus a finished appearance. Preferably, the vat 23 is formed of sheet steel and the interior surfaces thereof are given a suitable coating of vitreous enamel in order to prevent corrosion thereof as a result of contact with the washing fluid.

The cabinet H is provided with a front door 48 for closing the opening 2%, that comprises, as best shown in Figs. 2, 3, 5, and 6, an outer body sheet 49 terminating in an inverted substantially U-shaped rearwardly directed marginal flange including top and opposed side portions 5 E i and 52, and an inner body sheet 53 terminating in an inverted substantially U-shaped rearwardly directed marginal flange including top and opposed side portions 54, 55 and The inner body sheet 53 is arranged in nested relation with in the outer body sheet 49 and suitably secured in place so that the principal portions of body sheets 49 and 53 are arranged in upwardly approaching spaced-apart relation. More particularly the rear ends of the portions 5t, 5| and 5.2

of the marginal flange provided on the outer body sheet 49 engage the respective rear ends of the portions 54, 55 and 56 of the marginal flange provided on the inner body sheet 53". Moreover, the inner body sheet 53 is provided with two forwardly projecting bosses 5? disposed adjacent to the top portion 54 of the marginal flange carried thereby, which bosses 5T engage the inner surface of the outer body sheet $9 adjacent to the top portion 59 of the marginal flange carried thereby. Accordingly, the upper portions of the body sheets 49 and 53 are arranged in contacting relation, while the lower edges thereof are arranged in considerably spaced-apart relation defining a wedge-shaped space therebetween. Also, two laterally extending rows of elongated openings 54a are formed in the top portion 54 of the marginal flange provided on the inner body sheet 53 and utilized for a purpose more fully described hereinafter. Furthermore, the inner body sheet 53 carries on the outer surface thereof an outwardly projecting bracing sheet as contacting the inner surface of the outer body sheet 49 in order further to retain the sheets 49 and 53 in proper spaced-apart relation. The outer body sheet 1-9 carries a substantially centrally disposed handle 59 adjacent to the upper edge thereof that is readily accessible from the exterior; and the lower edge of the outer body sheet 49 terminates in a rearwardly off-set laterally extending groove 60 that cooperates with an inwardlydirected laterally extending edge 6| carried by the panel I9 adjacent to the bottom of the opening 20 formed therein, the groove 60 and the edge 61 cooperating to give the cabinet II a finished appearance when the door 48 oocupies its closed position as explained more fully hereinafter. The marginal flange provided on the inner body sheet 53 terminates in an outwardly directed rim provided with top and opposed side portions 62, E3 and 64 that respectively cooperate with the corresponding portion 39, 4!] and 4| of the vat rib 38 when the door 48 cccupies its closed position. d

The door 4-8 is arranged within the doorway 28 and mounted for pivotal movements with respect to the front opening 2%) between a substantially vertical closed position and a substantially horizontal open position by an arrangement including two laterally spaced- apart hinge mechanisms 65 and 66 arranged in the doorway 29. More particularly, when the door 43 occupies its closed position the outer body sheet if) is disposed in a substantially vertical position and is positioned substantially flush with the front of the panel l9, while the inner body sheet 53 is disposed in an upwardly and forwardly inclined position. On the other hand, when the door 48 occupies its open position, the inner body sheet as is disposed in a substantially horizontal position and the outer body sheet 49 is disposed in an upwardly and forwardly inclined position. This arrangement is very advantageous as the door 48 may be moved between its open and closed positions through an angle somewhat less than ninety degrees.

Preferably, the hinge mechanisms and 65 are identical. More particularly, the left-hand hinge mechanism 65 comprises a first hinge element 51 secured to the bottom flange 34' adjacent to the left side flange 3-2 and rearwardly of and below the ledge 35, and a second hinge element as secured to the outer surface of the inner body sheet 53 adjacent to the lower left-hand side thereof. The first hinge part t'l carries a pintle 69 that cooperates with a substantially U-shaped open-ended saddle member H3 carried by the second hinge element 68. Likewise, the righthand hinge mechanism 66 comprises a first hinge element H secured to the bottom flange 34 adjacent to the right side flange 33 and rearwardly of and below the ledge and a second hinge part 12 secured to the outer surface of the inner body sheet 53 adjacent to the lower right-hand side thereof. The first hinge element H carries a pintle 13 that cooperates with a substantially U-shaped open-ended saddle member i4 carried by the second hinge element "52. The upper portion of the second hinge element 58 of the left-hand hinge mechanism 65 is covered by an outer bumper member l5; and the upper portion of the second hinge element 52 of the righthand hinge mechanism se is covered by an outer bumper member 78.

The lower ends of the body sheets 49 and 53 are arranged in straddling relation with respect to. the ledge 35 so that when the door 4% occupies its closed position the lower end of the inner body sheet 53 is disposed rearwardlyof and below the ledge 35 and. the lower end of the outer-body sheet 49 is disposed forwardly of and below the ledge 35. Also when the door 38 occupies its closed position the. groove 69 carried by the-lower endof the outer body sheet 49- is disposed rearwardly of the edge 6 l carried by the panel l9 and substantially in contacting relation. therewith in order to give the front of the cabinet ll a finished appear.-

standing ance. When the door 48 is pivoted into its open position the bumper members and 16 of the respective hinge mechanism 65 and BBengage the top of the adjacent portions of the ledge 35, as clearly indicated in Figs. 6 and 8, in order to support the weight of the door 43, as well as the fully hereinafter. Also when the door 48 occupies its open position the groove 59 carried on the lower end of the outer body sheet 49 is swung inwardly about the pintles 69 and 13 of the respec- 7 tive hinge mechanism 55 and 66 away from the cooperating edge 6i carried by the panel I9, as

clearly indicated in Fig. 8.

Due to the construction of the hinge mechanisms t and 68 the door'dfl may be completely removed from the doorway 29 when it comprises an intermediate pivoted. position with respect to its open and closed positions, as illustrated in Fig. 7. More particularly, when the door 48 is moved into its intermediate position the openended saddle members iii and M may be lifted from the respective pintles 59 and 53 respectively incorporated in the hinge mechanism 55 and 66. Specifically, the door s8, when it occupies its intermediate position, is lifted upwardly and outwardly in order to clear the doorway 29; which arrangement permits the complete removal of thedoor 6.8 from the doorway 29.

Subsequently the door 138 may be replaced in the doorway 29 by following a substantially identical reversed procedure. This arrangement permitting complete removal of the door 48 and the doorway 29 is very advantageous as it permits ready access to the interior of the vat 23 facilitating complete I and thorough cleaning thereof.

Also, the inner body sheet 53 carries an upinverted substantially U-shaped inwardly directed baflie provided with top and opposed sicle portions 1?, l8 and 19 respectively directly engaging and attached to the correspending portions 55, 55 and 55 of the marginal flange carried by the inner body sheet 53. The

top portion 11 of this baflie is provided with an I employed for a purpose subsequently described.

More particularly, the top and side portions H, 18 and E9 of this bafiie project through the doorway 29 past and in cooperative relation with therespective portions 39, 583 and M of the vat rib 38, when the door 68 occupies its closed position. Further, when the door 43 occupies its closed position, the side portions '58 and '19 of this bafile project further rearwardly into respective cooperation with the bailles 42 and st carried. by the respective side walls 2% and 2? of the vat 23. Also, when the door 53 occupies its closed position the portions 5! 5i and 52 of the marginal flange carried by the outer body sheet 49 cooperate with the respective flanges 3!, 32 and 33 of the doorway 29; and the portions 52, 63 and E i of the rim disposed about the marginal flange carried by the inner body sheet 53 abut the corresponding shoulders or faces provided on the corresponding portions 39, 4B and 4! of the vat rib 38. The portions 62, E33 and 64 of the rim disposed about the marginal flange carried by the inner body sheet 53 project beyond the adjacent edges of the corresponding portions 50, 5! and 52 of the marginal flange carried by the outer body sheet 49 and are arranged in non-scraping relation weight of the dish-receptacle that may be carried 1 by the door it at this time, as explained more 8 with respect to the corresponding flanges 3!, 32 and 33 of the doorway 29 in order to permit ready movements of the door 8 with respect to the doorway 29. Further the portions ll, 78 and T9 of the baffle secured within the marginal flange carried by the inner body sheet t are arranged in non-scraping relation with respect to the corresponding portions 39, 49 and e! of the vat rib 38, and the side portions '58 and is of this bailie are arranged in non-scraping relation with respect to the respective baflies 42 and M in order further to accommodate ready movements of the door 48 with respect to the doorway 29.

In order to restrain the door 3-8 in its closed position an arrangement is provided that comprises a first latch element 80 disposed between the end of the portion 50 of the marginal flange carried by the outer body sheet as and the portion 62 of the rim provided on the marginal flange carried by the inner body sheet 53, and a second latch element 8! carried by the flange 3! within the doorway 29. The first latch element 8i) may be formed of the phenolic plastic material Textolite, or the like, and is disposed substantially centrally of the top portion 5% of the marginal flange carried by the outer body sheet 139; while the second latch element 8! may take the form of a short resilient corrosion-resistant spring secured to the corresponding central portion of the flange 3! adjacent to the face of the portion 39 of the vat rib 38. When the door at is moved to its closed position, the latch element 30 rides under the latch element 81 and is restrained in engagement-therewith by friction. In order to disengage the latch elements 8t and til it is only necessary to pull upon the handle 59 carried adjacent to the top of the door 68. Accordingly, the door 48 may be readily moved to its closed position and latched in place automatically by the cooperation between the latch elements i5 3 and 8!. Likewise, the door it may be moved out of its closed position merely by pulling upon the handle 59 in order to disengage the latch elements 89 and 8|.

Further, an electric switch or circuit controller 82 is carried by the lower left-hand front side of the ledge 35 and arranged in cooperative relation with respect to a trip element 83 carried by the inner surface of the outer body sheet as. More particularly, when the door 48 occupies its closed position the trip element 83 engages the plunger of the switch 32 moving the switch 82 to its closed-circuit position; and when the door 48 occupies its open position the trip element 83 disengages the plunger of the switch 82 moving the switch 82 to its open-circuit position; all for a purpose more fully explained hereinafter.

Further, the inner body sheet carries two substantially L-shaped inwardly directed embosses 84 and 85 respectively disposed adjacent to the opposite sides thereof. More particularly, the emboss 84 comprises a stem 86 constituting a strengthening rib disposed substantially parallel to the portion 18 of the baflle arranged within the marginal flange carried by the inner body sheet 53 and spaced inwardly therefrom, as well as an inwardly directed leg 87 constituting a bafiie positioned adjacent to the lower edge of the inner body sheet 53 and substantially parallel thereto. Likewise, the emboss 85 comprises a stem 88 constituting a strengthening rib disposed substantially parallel to the portion iii of the bafile arranged within the marginal flange carried by the inner body sheet 53 and spaced inwardly therefrom, as well as an inwardly directed leg act vate 39 constituting a baffie positioned adjacent to the lower edge of the inner body sheet 53 and substantially parallel thereto. Accordingly, the legs 81 and 89 are directed toward each other, while the stems 85 and 88 are disposed in substantially parallel relation with respect to each other. Also the inner body sheet 53 terminates in a downwardly projecting substantially centrally disposed tail 90 that is received within the, groove 31 formed in the bottom flange 34 when the door 48 occupies its closed position; and an upstanding substantially centrally disposed trackway' 91 is embossed in the inner body sheet 53, the lower end of the trackway 9'! extending onto the tail 9D. The leg 81 of the emboss 84 terminates short of the trackway 91, While the leg 89 of the embcss 85 joins the trackway 9!. Accordingly, space is provided between the end of the leg 81' and the trackway at, in which space a recess 92 is previded in the inner body sheet 53. An inwardly opening detergent cup 93 is arranged in therecess 92 and suitably secured in place between the inner body sheet 53 and the outer body sheet 49 Also, the detergent cup 9-3- is surrounded by an outwardly extending flange 94 spaced inwardly from the inner body sheet 53. Accordingly, when the door 48 occupies its closed position the bottom wall of the inwardly opening detergent cup 93 is disposed substantially in line with the pintles 69 and 13 of the respective hinge mechanisms 65 and 6E- and somewhat below the upper edge of the ledge 35 as shown in Fig. 6; all for a purpose more fully explained hereinafter. The central trackway 9i terminates adjacent to the upper end thereof in a depression 95 disposed just below the portion &4 of the marginal flange carried by the inner body sheet 53 for a purpose fully explained hereinafter.

Finally the stems 8t and 88 of the respective embosses 84 and 85- carry two side trackways 9t and 9-? respectively adjacent to the leg 8"! and 8 9. The side trackway 93 is secured to the bumper member to the second hinge element 68 of the hinge mechanism 55 and to the inner body sheet 53' by an arrangement including a plurality of securing devices 98, which may take the form of cooperating threaded studs and tubes. Prefer-- ably the bumper member and the side trackway 96 are formed of the phenolic plastic ma-- terial Textolite, or the like, and are securely clamped together by the common securing devices 98-. Likewise, the side trackway 9-1 issecured to the bumper member is, to the second hingeelement T2 of the hinge mechanism 6t and to the inner body sheet 53- by an arrangement including a plurality of securing devices 93, which maytake the form of cooperating threaded studs and tubes. Preferably the bumper member 76" and the side trackway 51 are formed of the phenolic plastic material Textolite, or the like, and. are securely clamped together by the commonsecuring devices 99. The side trackways 96 and Q-l comprise respective rearwardly sloping surfaces I00 and liil and respective forwardly" 10'' and the lowersid'e of the emboss 84 adjacent to the side trackWa-y 96; while the boss N15 is disposed between the lower side of the portion T9 of the bafiie arranged within the marginal flange carried by the inner body sheet 53 and the lower side of the emboss 85 adjacent to the side trackway 91. The extreme lower end of the portion 18 of the baflie arranged within the marginal flange carried by the inner body sheet 53 terminates in an inwardly directed lip I66 disposed below the boss I04; while the extreme lower end of the portion 19- of the bafiie arranged within the marginal flange carried by the inner body sheet 53 terminates in an inwardly directed lip [-91 disposed below the boss Hi5; More particularly, the inwardly directed lips Hi6 and Hl'i are positioned respectively adjacent to legs 8 and d9 of the respective embosses 84'- and 85 and are utilized for a purpose more fully explained hereinafter.

Preferably, the sheets 39', 53 and 5S incorporated in the door 48 are formed of aluminum in order to obtain a strong light-weight construction and the exterior surfaces of the door 48 are provided with a suitable enamel coating to match that of the cabinet I I.

Further, the apparatus l'ficomprises a dish and utensil supporting assembly or rack lit including, as best shown in Fig. 13, a lower receptacle or basket H I, a detachable upper outer receptacle or basket 2a, and a detachable upper inner receptacle or basket I 12b; all formed'of open wire-work stainless steel construction. The lower basket H l" is substantially rectangular in plan and carries a substantially Vertically disposed supplemental bafile H3 adjacent to the left-hand front side thereof and is provided with a centrally disposed structure H4 adapted to receive a removable perforated silverware receiving cup, not shown, and other structure H5 expressly adapted to receive and to support dishes in an upstanding position surrounding the structure H4. Also, the'bottom of the lower basket HI carries a reticulated screen H5 that prevents any small articles from falling therethrough into the bottom of the vat 23. The upper outer basket Him and the upper inner basket H271 are removable together with respect to the lower basket H I. The upper outer" basket [12a E adapted expressly to support cups, and saucers while the removable inner upper basket M211 is adapted expressly to; receive glassware. The lower basket [I l comprises an upper rim Hi provided with a plurality of spaced-apart notches 'I I8 adapted to receive corresponding abutments Ilacarried by the upper outer basket 2a; Finally the upper basket l"l'2b carries structure 92% adapted to be supported by corresponding. structure I21 carried by the upper outer basket H211. The rack structure l'lil as a whole is movable through the doorway 2%? into and out of the vat 23 when the door i8 occupies its open position, by virtue of a mounting arrangement including a first pair of laterally spaced-apart rollers 122 carried by the rear of the lower basket Hi and cooperating with the respective guide members 46' and 47. Also, this mounting arrangement comprises, as best shown in Fig; 4, a pair of laterally spaced-apart feet I23 carried by the front ofthe lower basket I H' and cooperating with the respective guide members it and M, aswellas a substantially centrally located front roller i2 4 carried by the front of the lower basket Ill and cooperating with th side trackways 95 and 9? carried by the inner body sheet 53.

The mounting arrangement for the rack structure I I will best be understood by reference to Figs. 9 to 12, inclusive, of the drawings. When the rack structure I I0 occupies its position withof the guide members 46 and 41 and support the front of the rack structure IIII, as clearly illustrated in Fig. 9. Atrthis time when the rack structure IIll occupies its position within the vat 23 and the door 48 is moved from its closed position into its open position, the tail 90 of the inner body sheet 53 engages the front roller I24 and lifts the front of the rack structure III), as clearly illustrated in Fig. 10. Moreparticularly, the tail E5 of the inner body sheet 53 lifting the front roller I24 lifts the front of the rack structure IID causing the feet I23 to disengage the Q front ends of the respective guide members 45' and 41. Accordingly, when the rack structure III! is arranged within the vat 23 and the door 48 occupies its closed position, a four-point support is provided for the rack structure lid; on i the other hand, when the rack structure Ilt is arranged within the vat 23 and the door 38 occupies its open position, a three-point support is provided for the rack structure IIG. Thus at this time the rear of the rack structure HE? is supported .by the pair of rollers I22 and the front, of the rack structure I I0 is supported by V rack structure III], the pair of rollers I22 riding upon the respective guide members 45 and 4? and the front roller I24 riding in the trackway 9 I. When the rack structure I II] has been moved to a partially withdrawn position with respect to the vat 23 over the front door 48 in its open position, as illustrated in Fig. 11, the second pair of rollers I respectively engage the side trackways 9% and 97 carried by the inner body sheet 53. More particularly, the second pair of rollers I25 respectively engage the side trackways 9i; and 91 before the first pair of rollers I22 respectively disengage the guide members and 4?.

Accordingly as the rack structure III? is moved 'IIO iscontinued the second pair of rollers I25 roll up upon the respective surfaces Hit and I BI provided on the respective side trackways 96 and 91 and the first pair ofrollers I22 respectively disengage the guide members 4% and 41; whereby another three-point support is substituted for the prior five point support for the rack structure III Asv forward movement of the rack structure IIIi continues the front roller I25 continues to ride in the centraltrackway SI and the second pair of rollers I25 ride over onto the rei2 spective surfaces I02 and ms carried by'the re spective side trackways flfi and 9?. When the rack structure H6 is moved into its fully withdrawn position, as illustrated in Fig. 12, it is supported by the front roller I24 riding into the depression 5 formed in the front end of the central trackway 9| and by the second pair of rear rollers I25 engaging the respective surfaces E02 and IE3 respectively carried by the side trackways 95 and 91. The fully withdrawn position of the rack structure Ht, illustrated in Fig. 12, constitutes a stop position so that the rack structure ilt is retained in a steady state in its fully withdrawn position. At this time, dishes, or the like, may be appropriately loaded into or removed from the various baskets 5 II, ilfa and H219 of the rack structure Ht. Moreover,at this time the weight of the rack structure ill] and the various dishes or the like, carried thereby, is supported entirely upon the door '45. Specifically the bumper members l5 and 76 located on the 7 door 48 engage the associated portions of the upper edge of the ledge 35 and the hinge elements 7 of the hinge mechanisms and Gtare engaged. At this time the upper inner basket H227 may be removed from the upper outer basket Il2a or both the upper inner basket H227 and the upper outer basket I I2a may be removed together from the lower basket I I i. Finally the assembled rack structure lit including the lower basket i i I, together with the upper baskets HM and H21), may be readily removed entirely from the door as in its open position merely by lifting up upon the front end of the lower basket HI and then by moving the rack structure. I It upwardly and forwardly'to clear the front portion 54 of the marginal flange carried by the inner body sheet 53. In passing it is noted that the marginal flange carried by the inner body sheet 53, together with the baffle portions 11, "it and it arranged within this marginal flange, constitute a retaining wall preventing accidental displacement of the lower basket III in its fully withdrawn support position from the door 48 in its open position. The subsequent replacement of the rack structure I II upon the inner body sheet 53 of the door it is substantially identical to that described above, the above-described steps being followed in reverse order.

a In order to return the rack structure II!) from its fully withdrawn position back through the doorway 29 into the vat2'3, it is only necessary to a push inwardly upon the front of the lower basket III. fully withdrawn position over the door 58 in its open position into its partially withdrawn position, as respectively illustrated in Figs. 12 and 11, the first pair of rollers I22 again respectively re-engage the front ends of the respective guide memberss and t7. As further inward move ment of the rackstructure IN) is continued the second pair of rollers I25 respectively disengage the side trackways 96 and 9?, as indicated in Fig.

10. After therack structure I i B has been moved back into the vat 23 and the door 43 is again returned from its open position into its closed position the front end of the rack structure III} is again lowered causing the. front roller I24 to disengage completely the tail 9B of the inner body 46 and 41, as illustrated in Fig. 9.

V Finallythe lower basket III carries resilient I rear bumper structure I26 and resilient front bumper structure I21 that are utilized for the As the rack'structure IIil moves from its purpose of preventing: direct striking; of: the rear and the front of the lower basket I I-I- upon. the; respectively adjacent rear wall 28an'dinner. body sheet53, as shown in Figs. 9 and 12, respectively. Specifically when the rack structure III); occupies its'final positionwithin the vat 23,.it is locatediby' engagement. between the rear bumper. structure I26. and the rear wall 28. On the other hand,

the. event the door 48: should be moved into. its.

closed position before the rack structure IIIhhas: been moved into its final position Withinthevat 2-3,. the front bumper structure I21 engagesthe: inner body sheet 53 forcing the rack structure Ht into its-final position within the vat. 23,

The arrangement of the inclined surfaces: "Jil and: it! upon the respective side: trackways: 96? and 91- biases the rack structure II back intothevat 23; while the arrangement of the inclined; surfaces I62 and I03. upon the respective side; trackways 96 and 91- biases the rack structure.

Hi3 into its fully withdrawn position overt-he door 43' in its open position. Accordingly, the.

trackways E36 and 97 are effective-to cause-return. movement ofthe rack structure I-I 0 back into its final position within the vat 2-3- when the rack structure i it is moved in this direction; and-likewise-thetrackways stand 91- are effective to cause forward movement of the rack structure II 0 intoits fully withdrawn position over the door 48 in its open position when the rack structure ismoved in this direction.

Again referring to Figs. 1v to 3; inclusive, of the drawings the apparatus Ill further comprises animpeller i33 which isprovided with blades I3 I' that may have any suitable shape, the important feature being that the blades are given a shape suchthat the washing fluid supplied to the vat 23 and allowed to accumulate in the sump 36 is thrown upwardly and outwardly in an efficient manner through the rack structure H0. The impeller 43.0 may be formed of any suitable material, such, for example, as the phenolic plastic material Textolite and is mounted upon a substantially vertically disposed operating shaft I32 of. an electric motor I33 arranged below the sump 35. More particularly, the sump 36 terminates in a substantially vertically disposed tube I34- through which the shaft I32 of the motor I33 projects and which is surrounded by the hub of lar I35. arranged within the tube I34 and abutting;

the upper end of the shaft I32, the endof the-bolt- I35 being threaded into a cooperating recess provided in the upper end of the shaft I32. motor. 533 is carried by suitable structure I31, that is, in turn, secured to the bottom wall- I31 Finally,.the shaft I32 carries a disk I38 disposed below. the spacing collar I36 and the bottom of the tube I34iin order to fling from the: shaft I32 any washing fluid that may escape. from the: vat 23: into the upper-open end of the tube I34 be,- tween the hub of the impeller I30 and the wall: of. the tube I34. ready rotation of the impeller I30 by the motor I33; and prevents the escape of any substantial" amount of the washing. fluid. from the vat 23 through the tube use. Also, an upstanding cylindrical. reticulated. screen I39= is carried by the bottom Wall of the sump 3B insurrounding relation-with respect tothe blades- I3I- of the-impeller I392. Accordingly, the shaft I-32 of the motor- I rotates: the: impeller I3 0' about a substantially The This arrangement permits.

f4? vertical? axis; the: rotation: of: the. impeller. I136 being a. counterclockwise: direction. as viewed from: the. topof the vat 23*.

Provided. in: the space in. the: casing Hi below' the: vat. 231 is: a suitable fluid supply pipe: I541]- which; is; adapted to: be connected. to. a. source of. supplyof cleansing or. washing fluid, not sh0Wn,. byfcoupling: unions, or: the like, not shown; For example; in the event the washing fluid: is Water the source: of: supply may be av convenient hot.

water: tank, or: the like. The. washing fluid. is. piped; from the: bottom of the: casing II upwardly between the: wall. of. the: casing: I12 and theawalltof'thevat23; adjacent to; the left-hand. rearcornen thereof; as shownin Fig- 2, by a flexibleicon'duit: I-:4:I' andainto: the top of the vat: 23 Specifically; a2 spraying device I42 is carried by the. lower surface. of. the. top wall. 24 of the vat. 23:. and: is positioned substantially centrally of: the. vat 23; sothat: the washing fluid may be: sprayed down through the: rack structure III): providedin: the vat 2-3.: and. allowed: to a-ccumu lateeinzthersump 3B. Specifically, the fluid supplypipe I40 is suitably connected to an inlet valve mechanism. I43. of the so1enoiddashpot type arranged; to discharge into the conduit MI. The inlet; valve mechanism I43; is normally biased toitsclosed' position in: order to cut off the supply ofwashihg. fluidt fromv thelfluid supply pipe I40 to the conduit I4:Ir,., but isoperated. to it's open position when the associated: solenoid is energized, order that washing fluid may be supplied: from: the fluid supply conduit MI via the casing; of the. inlet valve mechanism I43, the

; conduit I41. and the: spraying device I 42 into theupperportion of" the vat 23.. Subsequently, when the solenoid. of the inlet valve mechanism I43 is de-energized, the inlet valve mechanism I43 is: returned slowly to its closed position cuttingoff the communication between the fluid supply pipe M0: and. the spraying. device I42. The provision: of the slow. closing inlet valve mechanism I433 is very: advantageousinview of the fact that it'eliminates'water'hammer in the kitchen plumbing', preceding the fluid supply pipe I40. Also, a strainer, not shown,v is incorporated. in the oasing'off the inlet valve mechanism I43 in order positively'topreventforeign material in the fluid supply. pipe: I40 from being conducted into the fluid: supply. conduit MI and. thence into the spraying device I42.

Also; provided in: the lower portion of thecasing III) below thevat 23 is a drainpipe I44 that is connected through a suitable trap I45 to a drain connection I 46. Provided in the drainpipe I44: is: an elbow l4!- terminating in a drain valve mechanism: I48 that is suitably connected to: a drain conduit I49, that, in turn, communicates: through an opening I58 formed in the bottom. Wall 25 of the vat 2'3 with the bottom of the sump 3.6; More particularly, the draincon-- duit' Ii49' maybe formed of rubber, or the like, and; is, arranged in fluid-tight" relation with the portion. of the bottom wall 25- surrounding theopening I50; The drain valve mechanim' I48 is normally biased to itsopen position in order to connect the sump- 36 via the opening 456, the drain conduit M9; the casing of the drain valve mechanism I48 the elbow M1, the drainpipe I44 and* thetrap I45 to the drain connection I46. In order to operatethe drain valve mechanism I48 there is'mountedon the structure I37. aplatform I 51 carrying an electromagnetic; device I52 whichi hasan armature I 53 that is actuated in response: to energi'zation' of an associated soleatoms/" noid E54; Connected to the armaturel53, by a armature 853 of the electromagnetic device IE2 is actuated so as to rotate through the spring I55 the'shaft E? in a counter-clockwise direction,

as viewed in Fig. 2, whereby the drain valve mechanism M8 is operated to its closed position, cutting off the communication between the sump 3t and the drain connection 146. Subsequently when the solenoid 55d of the device I52 is deenergized, the armature 553 is released, whereby the shaft i5? is rotated'in the clockwise direction again operating the drain valve mechanism 1% to its open position in order again to place the sump 3-5 into communication with the drain.

connection i 55.

Mounted within the lower portion of the vat 23 above the bottom wall 25 and the sump 36 and surrounding the impeller i313 is a suitable electric heater ibii which is preferably of the sheathed resistance conductor type; which heat-' or its is employed for the purpose of drying dishes after they have been washed and rinsed as explained more fully hereinafter. Also an 7 electric control panel i6! is arranged in the low-v or portion of the casingl i below the bottom wall 25 of the vat 23 and carried by the bottom wall 53; The control panel 96! supports electric apparatus, that is connected and arranged in the 7 connection 548.

manner described in the previously, mentioned- Walker application and substantially in the manner disclosed in United States Patent No. 2,425,620, granted on August 12, 1947, to Leslie A. Kempton, for the purpose of controlling the electric motor i353, the electro-responsive inlet valve mechanism M3, the electro-responsive device E52 associated with the drain valve mechanism ids,

and the electric heater E60. Specifically this electric circuit, network includes a start switch, not switch, that is controlled by a push button i52 carried by the front panel 19 of the casing i 5 adjacent to the upper left-hand corner thereof, as illustrated in Fig. 1, as well as the electric switch 82 of the door interlock type. prises a pick-up relay, not shown, and an electromagnetic timer, not shown. The electric cir-.

' operation of the pick-up relay, not shown, whereby operation or the electromagnetic timer, not shown, is initiated, At. this time the timer, not

' shown, proceeds through a timed cycle of operation of the dishwashing apparatus H3 in order to effect spraying, washing, rinsing and drying of 'the'dishes supported by the rack structure I ll in the vet 253 and then is reset at the conclusion of the cycle, reconditioningitself for another cycle of. operation; During the cycle of operation of the dishwashing apparatus as, should the door 48 be moved from its closed position the interlock switch" 82 is operated to its open position in order to govern the electric control cir- Also this electric control network comi6 cuit to brin about restoration of the pick-up relay, not shown, whereby the timer, not shown, is reset into its initial position.

The details of the electric control network incorporated in the dishwashing apparatus IE3 have been omitted in the interest of brevity but are fully disclosed in the previously mentioned Kempton patent; however, the complete timed washing cycle of the dishwashing apparatus Hi may be understood from the following outline.

After the dishes to be washed have been loaded into the rack structure H0 and the rack structure i iii has beenmoved into its normal pushedin position in the vat 23 the door 48 is closed by the handle 55, whereupon the push button I62 is operated in order to initiate the timed washing cycle. At this time the pick-up relay, not shown, and the timer, not shown, are operated in order to initiate a first spray step.. Specifically operation of the electric motor H33 is initiated and the inlet Valve M23 is operated to its open position while the drain'valve mechanism M8 occupies its open position. Accordingly, the impeller I30 is rotated in the counter-clockwise direction and washing fluid is supplied from the fluid supply pipe Mt to the spraying device I42. The washing fluid sprays downwardly from the spraying device hi2 through the dishes supported by the rack structure I it into the'sump 36. This washing fluid passes from the sump 36 into the drain conduit M9 and thence into the drain Some of the washing fluid in the sump 36 passes through the reticulated screen its and may be caught and flung upwardly and outwardly through the dishes supported by the rack structure Hi! py the blades i3l of the impeller 538 at this time, although this action is not considerable since the drain valve mechanism M5 occupies its open position. This first spray step is carried out through a time interval of apprommately 30 seconds under the control of the timer, not shown.

The timer, not shown, then initiates a first washingstep and specifically the electromagnetic device W2 is operated in order to close the drain valve mechanism hi8 while the inlet valve mechanism i 33 occupies its open position and the electric motor H3 is running. At this time the washing fluid sprayed through the dishes supported by the rack structure H0 from the spraying device hi2 accumulates in the sump 36 since the drain valve mechanism M36 occupies its closed position. The washing fluid accumulatingin the sump 36 of the vat 23 passes through the reticulated screen 139 and is caught by the blades E39 of the impeller 23d and is flung upwardly and outwardly through the rack structure I i ii and the'dishes supported thereby against the walls or" the vat 23 and the doorfiiiand again returns to the sump 3%. The supply of washing fluid from the spraying device 5 52 0011- tinues until a predetermined quantity of washll'lg fluid accumulatesin the sump 55 imposing a predetermined load upon the impeller l3l3and consequently upon the electric motorl33. The electric circuit'network is responsive to this increased load imposed upon the electric motor I33 and operates in order to ds-energize the solenoid of the inlet valvemechanism lit, whereby the inlet valve mechanism its is operated to its closed position to shut oi? the supply of washing fluid aesigeev order to shut off the supply of washing fluid from the fluid supply pipe I40 to the spraying device I42, after an elapsed time of forty-five seconds, in the event this operation has not already been effected by the previously mentioned arrangement responsive to the increased load upon the electric motor I33. After a predetermined quantity of washing fluid has accumulated in the sump 36 a given charge of detergent is introcluced into the washing fluid in order that the first washing cycle may be effective to remove grease and other foreign materials from the dishes supported by the rack structure III), the arrangement for introducing the detergent into the washing fluid accumulated in the sump 36 during the first washing step being described more fully hereinafter. Preferably, the detergent mentioned is of the type sold under the trade name Calgonite, that comprises about forty per cent sodium hexametaphosphate and sixty per cent sodium metasilicate. This first washing step is carried out through a time interval of approximately five minutes under the control of the timer, not shown, whereupon the timer operates to effect the release of the electromagnetic devices I52, whereby the drain valve mechanism I48 is operated to its open position while the inlet valve mechanism I43 occupies its closed position and the electric motor I 33 is running. The Washing fluid accumulated in sump 36 is then drained into the drain conduit I46, which takes place in not more than forty-five seconds. The timer, not shown, then operates at the conclusion of forty-five seconds in order again to effect operation of the inlet valve mechanism I43 to its open position while the drain valve mechanism I48 occupies its open position and the electric motor I33 is running, thereby to initiate a second spray step.

Washing fluid is again supplied from the fluid supply pipe I 40 to the spraying device I42, whereby the dishes supported by the rack structure iii] are again sprayed, and the washing fluid in the sump 36 passing through the drain valve mechanism I48 into the drain connection I46. lhis second spray step is carried out under the control of the timer, not shown, through a time interval of approximately ten seconds, whereupon the timer again operates the electromagnetic device I52 in order to effect closure of the drain valve mechanism I48 and the consequent initiation of a second washing step.

The second washing step proceeds substantially in the manner of the first washing step described above, except that only residual detergent present upon the dishes, the walls of the vat 23, etc, is employed therein, whereby the inlet valve mechanism is operated to its closed position depending upon the load upon the electric motor i33 or at the conclusion of forty-five seconds. The second washing step continues for a timed interval of flve minutes under the control of -the timer, not shown, whereupon the electrothereby to initiate a third spray step, The wash-' ing fluid supplied from the fluid supply conduit I so to the spraying device I 62 sprays through the dishes supported by the rack structure H6 and is drained from the sump 36 into the drain connection I46. This spray step continues throughout a timed interval of ten seconds under the control of the timer, not shown, whereupon operation of the electromagnetic device i52 is ef fe-cted in order to effect closure of drain valve mechanism I48, thereby initiating a first rinse step.

Washing fluid is sprayed from the spraying device ME into the vat 23 and accumulates in the sump 35; and thereafter the inlet valve mechanism I 33 is operated to its closed position depending upon the load upon the electric motor I3'3 or upon the elapsed time interval of fortyfive seconds, as previously explained. This rinse step continues through a time interval of one minute, whereupon the timer, not shown, releases the electromagnetic device I52 to cause the drain valve I38 to be operated to its open position. The washing fluid accumulated in the sump 3a is then drained through the drain valve Mil into the drain connection I46.

At the conclusion of forty-five seconds the timer, not shown, again operates the inlet valve mechanism I43 to its open position in order to initiate another spray step in the manner previously explained. After ten seconds the timer, not shown, operates the electromagnetic device I52 in order to effect operation of the drain valve mechanism I53 to its closed position, whereby washing fluid is again accumulated in the sump 36 initiating a second rinse step. Subsequently the inlet valve mechanism M3 is operated to its closed position depending upon the load upon the electric motor I33 or at the expiration of forty-five seconds, as previously explained. This second rinse step continues through a time interval of one minute and thereafter the timer, not shown, releases the electromagnetic device I52 in order to cause the drain valve mechanism I i-3 to be operated to its open position. The washing fluid accumulated in the sump 33 is then drained through the drain valve mechanism 1:23 into the drain connection Hi6.

After the expiration of forty-five seconds the timer, not shown, operates to supply heating current to the heater I39 while the inlet valve mechanism I 43 occupies its closed position and the drain valve mechanism I48 occupies its open position. At this time operation of the electric motor I33 is continued and when the heater 536 is heated the air circulated in the vat 23 by the blades I3I of the impeller I36 passes over the heater I66 and is directed into contact with the dishes supported by the rack structure I I3. This initial drying step is continued for twenty minutes under the control of the timer, not shown, with the electric heater i611 being supplied with current and the electric motor I33 running. After the expiration of twenty minutes thetime, not shown, opens the circuit to the electric motor I33, while retaining closed the circuit for supplied heating current to the heater E63. Accordingly, the motor I33 stops and operation of the impeller I39 is arrested. Drying of the'dishes supported by the rack structure I it; continues after operation of the impeller I33 has been arrested for additional ten minutes under the control of the timer, not shown. After the expiration of this additional ten minutes the timer, not shown, interrupts the supply of heating current to the electric heater I66, and releases thepickcoriiplet'e'd the, timed cycle andljis reta ed, toits initi ipositiori 'resetting the circuit'networl; ior anj her timed cycle of operation of the dish washing apparatus Iii.

Durin the opera n of shwa hi s appa atu I through the timed cycle above .describedthe doo'r l ti must be retained in its closed position asfpreviously explained. Also during the vari- 7 10 i eil se 3 1... t ha t e i l t v l e e h m ous wash and rinse'steps when considerable washing iiuidis accumulatedin the sump 36 it is pointed utthat the reticulated. screenlts prevents large particles of foreign matter such, for

example; as lettuce leaves, or the like, accumu- 4 I H A j r.)9 ih e ejimpe ler. is o a i g a latingfin' thesump 36 from being caught in the bladesjfliil'offlthefirnpeller [3B and again flung upwardly and outwardly thereby into the rack structure! H1 and the dishes supported thereby.

Final a eco cl s of .the'tfimed c e the dishes's'upported by the raclr structure I it have not Only been thoroughly WhSh'edand rinsed but they hayealso been dried. At this time thedoor 48 may bemoved from itstclo'sjed. position to its open position and'the rack'stru'cture ii'jt may be H deter ent cup 95 during the initial part of the moved irom its fully pushed 'p'ositionto its fully' withdrawn position and the dishes removed therefromand replaced in a kitchen cabinet or t e likeii desired. o

In the operation of the v,dishwashil g apparatus after the dishes 'have beenloaded intothe rack structure I l'fi'and the rack structure He has been moved into its fully pushed-in position in the Vat 23, a predetermined quantity or charge of detergent 'is placed in the detergent cup 93 and'thedoor 48 is moved from its open position to its closed position by the handle 59. Even though the door 48 is moved rather rapidly into its closed position no substantial quantity i of the charge of detergent placed in the detergentcup 93 i s'jarred outof theij'pocket therein into the vat 23 since the pocket formed in the detergent cup 93 has'considerable depth and the bottgmgwall thereof occupies a substantially horizontal position at this timeIQ At this time the timed cycle of operation of the dishwashing apparatus'li] is initiatedpy operating thepush button f I62, in the manner previouslyjexplained, whereby the first spray step is initiated, [Moriaparticularly, washing fluid {is sprayed irom the spraying d vice 1.42

downwardly fthrough' the dishes I supported by he rack structure l marranged in the vat 23 while the drain valvem'echanism J48 occupies its .open

. position and theflelectricdnotor'J33 is running.

' the inner body sheet 5.3 and is deflected from thefpocket opening in' the. detergent cup 93. Specifica'lly, the surrounding flange 94 .carried by the detergent cup s in spaced relation to'fthe inneribodysheet L53 prevents theentry v of the washing fluid into the pocket of the detergent cup .93,flas shown in Fig. 6. Thus during the 1 spray step of the timing cycle no substantial. quantity of washing fiuid enters the pocket, of

thedetergent cup 93, whereby the charge of de-' tergent plac'edin'th pocket'of the detergent cup 93 remains thereinsubstantially undisturbed during the firstspray step.

Subsequently, at the beginning of the first washing step when 'the' drain'valve mechanism 1 8.1 .eheraie l .iwi -he qsed. P t on. wa hi hil h eih' t a cumula t s mp .3 :h i e frlile eil. ih phe. t e. r c iu i I 9 and. the supported dishes bythe blades liil of 5 the impeiler.IBO AsIthe quantity of washin flhiih emhulahhe h the. h. 6;i f s s t leve 1 thereof rises withrespect to the top of the ledge 35 ,and with respect to the pocket formed in he deter en u .9 a d os d Ju t ab .15 e rhisd-ip .i sPl hed pos ti a i pieh quantity. W s ih ...fluid .h f e hmma ed i h ps lhpfifi h elii r i ii tleve ther o p,,.i w rd h p chet... r d.i th d t g n thisi rhe- Teneme t). t l valve me hanisrn i43 is operated to its closed position while the level ofthe washing fluid accumulating in sump. 3. W ll. h w. et 0f h ledge '20 35, and the first washing step continues as pre- Y 1 lhin l-...=.. Whenthe'level of the washing fiuidaccumu- :lating in the surnp tt is raised a predetermined ams hht 1 t war he p pr ed the "fir .w shihsst a t ew s h h iiis W he into i eh k .formedih th d e e h h h 3- i a n. is e aihed in hwes g a 'paratus it by virtne of the ;f act that.the im- 30 pelle lie is rotated in the; counter-clockwise d 9 i ?-..3. viewed .irem. .t eio so th t whereby: the washingfluid is recirculated from w en 3 i t th p cke 9 .t d t en with h'heih hqe 9 i i hepocke o h e- 'lie e h ifli whiht iheya a d enc h Q'. .i e... s m. 3 r ci cu a on c th ashih il id .ih p. th p c e rm d. n t e .de tergent cup 93 positiyely insure s that allv off the ha e o fl ereehih hta'ihed n .t n ch t of 10 the d ter ehtehhlfii w ed and n roimpeller- [30' through the rack struct re ilfl and e ih iisd d hes-.1 e d r t ain... t "w h h eldtiqh i ehihesh hesih hemanne h vi h lr hl ihea rrah iemh hes hh h, is very adva ae s i new. f l h iih t th har e r de- :tergent "placed l the 7 pocket of the detergent cup 93 is automatically introduced into the quantity of washingfluidcontained in the y at during the initial portion of the first ashin 55 S merely by t h mhio era ohh t impeller I30; and, accordingly, requires no externally operated detergentcup mechanism to obtain introduction of the detergent at the required point, in the first washing step. Moreover, the

previously described deflector or baffle arrangement carried by the inner body sheet 53 and by the detergent cup 93 positively prevents any substantial quantityof Washing fluid from enteringthe pocket of the detergent cup93 during the preceding first spray step.

Again considering the operation of the dishwashing apparatus it, the door 48 occupies its closed "position during the entire timed washing cycle, whereby the side door baffles 18 and 19 are disposed in respective cooperating rela- '7 of the impeller I30; -Also, at this-time the'supplemental bafile II3 carried by the lower basket III is so related with respect to the cooperating baffles l8 and 42 that the upwardly directed washing fluid from the blades I3I of the impeller I30 is deflected from entering between the cooperating baffles I8 and 42. This arrangement including the supplemental baflle II3 disposed on the left-hand side of the rack structure I It, as shown in Figs. 3, 8 and 13, is very advantageous since the impeller I39 rotating in the counterclockwise direction has a tendency to throw more washing fluid between the cooperating bafiies 18 and 42 than between the cooperating bafiles l9 and 44. However, it will be understood that even though the supplemental baffle H3 is omitted from the rack structure IIEI, there will be no substantial entry of washing fluid between the cooperating baflles 42 and 18 due to their position and arrangement. Also, the two side wall baffles 43 and 45 disposed respectively rearwardly of the cooperating side wall baffles 42 and 44 deflect washing fluid on the respective side walls 23 and 21 from between the cooperating baffles 18 and 42 and the cooperating baffles 19 and 44, respectively. Thus the bafiie arrangement described limits the quantity of washing fluid entering between the legs 40 and 4| of the vat rib 38 and the cooperating door baffle portions I1, I3 and I9 disposed within the marginal flange carried by the inner body sheet 53 of the door 48. Moreover, most of the washing fluid that passes between the cooperating baffles 42, I8 and 44, 79 loses its horizontal component and falls downwardly before it reaches the portions 40 and M of the vat rib 38.

Further the portions 11, I8 and I9 of the door baflie respectively cooperate with the portions 39, 49 and M of the vat rib 38 in order further to limit the amount of washing fluid entering into the doorway 29. Moreover, the portions 62, 63 and 64 of the rim disposed on the marginal flange carried by the inner body sheet 53 of the door 48 respectively engaging the forwardly directed shoulders or faces provided on the respective portions 39, 40 and 4| of the vat rib 38 further to limit the amount of washing fluid entering into the doorway 29.

By virtue of this related structure described above very little washing fluid enters the doorway 29 when the door 48 occupies its closed position; and, the portions 58, and 52 of the marginal flange carried by the outer body sheet 49 of the door 48 respectively cooperate with the top and side flanges 3|, 32 and 33 in order positively to prevent any of the washing fluid from escaping from the doorway 29 through the front opening an and thence through the front opening 29 provided in the panel I9. The washing fluid entering the doorway 29 between the top flange 31 and the top portion 50 of the marginal flange carried by the outer body sheet 49 flows laterally across the top portion 59 of this marginal flange and thence downwardly along the side portions 5! and 52 of this marginal flange onto the bottom flange 34 rearwardly of the ledge 35 and ultimately back into the sump 36. The washing fluid entering the doorway 29 between the side portion 5| of the marginal flange carried by the outer body sheet 49 and the side flange 32 falls downwardly onto the bottom flange 34 rearwardly of the ledge 35 and is drained back into the sump 36; and, likewise, the washing fluid entering the doorway 29 between the side portion 52 of the marginal flange carried by the outer body sheet 49and the side 22 flange 33 falls downwardly onto the bottom flange 34 rearwardly of the ledge 35 and is drained back into the sump 33.

Also during the operation of the washing apparatus II] the washing fluid that strikes the rear surface of the inner body sheet 53 flows downwardly therealong and back onto the bottom flange 34 and thence back into the sump 36. Some of this Washing fluid travels down the rear surface of the inner body sheet 53 between the stem 86 of the emboss 84 and the central trackway 9i and cascades over the leg 37 and around the body of the detergent C p 93 onto the bottom flange 34; while other of this washing fluid travels down the rear surface of the inner body sheet 53 between the stem 88 of the emboss and the central trackway 9! and cascades over the leg 89 onto the bottom flange 34. Still other of this washing fluid travels down the rear surface of the inner body sheet 53 between the stem 86 of the emboss 84 and the side portion 18 of the baffle carried by the marginal flange of the inner body sheet 53 and is directed outwardly by the boss I84 onto the leg 81; and, likewise, still other of this washing fluid travels down the rear surface of the inner body sheet 53 between the stem 83 of the emboss 85 and the side portion '59 of the baflie carried by the marginal flange of the inner body sheet 53 and is directed outwardly by the boss I onto the leg 89. Finally washing fluid travelling down the inner surface of the side portion 18 of the baffle carried by the marginal flange of the inner body sheet 53 is directed inwardly by the lip I08 out of the corner and onto the leg 81; and, likewise, washing fluid travelling down the inner surface of the side portion 19 of the bafile carried by the marginal flange of the inner body sheet 53 is directed inwardly by the lip I01 out of the corner and onto the leg 89.

Finally, during the operation of the washing apparatus III, the interior of the vat 23 is vented to the exterior through the doorway 29 around the door 48 in its closed position; and, further, the interior of the vat 23 is vented directly through the openings 54a formed in the top portion 54 of the marginal flange carried by the inner body sheet 53 into the space between the inner body sheet 53 and the outer body sheet 49 and thence into the space below the vat 23 in the cabinet II. The rearwardly depressed body Ila of the top portion of the baffle carried by the inner body sheet 53 extending under the top portion 54 of the marginal flange carried by the inner body sheet 53 covers theopenings 54a formed therein and prevents washing fluid from being splashed from the interior of the vat 23 through the openings 54a while accommodating ventilation as described above. Any condensate accumulating between the upper portions of the inner body sheet 53 and the outer body sheet 49 flows downwardly and is caught by the bracing sheet 58 and conducted laterally and then downwardly along the outer surface of the inner body sheet 53 onto the bottom flange 34 just rearwardly of the ledge 35, which condensate then flows laterally inwardly into the depression 3! and below the tail 99 provided on the inner body sheet 53 back into the sump 36. Also vaporized washing fluid demos? the-outer surface thereof'o'nto the bottom flange 34 just rearwardly of the ledge fii Accordingly, it will be understood that the: door fis is of-the' gasketless type providing open' ventilation of-the interior oft-he vat 23during operation of the washing apparatus i9, and preventing the escape of-the washing fluid from-the vat 23 through the front Opening 30 ofthedoorway 29 about the door=dd when the door lt occupies its closed position-by virtue eithe -baffling arrangement incorporated i'nthe washing appara tus h! and carriedby the vat 23, bythe door-43 and by the rack'structure -l 10. "This arrangement is very advantageousdnview ofithe fact that no special ventilating structure need-'beincorporated in the-door- 48; 'andg sinceno'sealing gasket is employed in order to preventthe escape of washing fluid- =irom the opening-"30 of the doorway 29, no maintenance or-repairs are required in this con nection: during the life' of the washing: apparatus H3;

The roller-arrangement formounting: the rack structure l I t for movements into and out of the vat 2.? through: the front opening 30-an-d over the front door 48 its open'position-is disclosed and claimed-in the'c'opending divisional application of Forrest A. xwalkerr Serial No. 2 i5,l, filed July Inview of thenforegoing it is apparent: that there-rhas been provided-washing apparatus of the. frontopening type incorporating an improved arrangementfor preventing the escape of washing fluidirom thevat even though the associated door-is of the gasketless typeand for-providing openazventilationof the interior of the vat-about the door in its closed position; Also, the washing apparatus incorporates aniinproved arrange ment, for mounting :the dish-supporting rack structure for movements throughethefront opening into and out-of :the vat' over the front door in its open position. 7

While thereha's been described what isv at present considered to be the-preferredembodimentof the'inventionit will be understood-thatvarious modifications may=be made therein, and-it is in tended'to cover inthe appended -claiins=all such modifications as fall Within the true-spirit and scope'of the inventioni- What is claiinedis':

1 In washing-apparatus, a vatprovided-with a forwardly directed doorway terminating-in a sub stantially vertically' disposed iront opening, said doorway havinga bottom flange and opposedside flanges, said bottom' flange being provided with an upwardly directed ledge extending between said side fiangesand terminating adjacen-ttosaid front opening, a single .doorsubstantially com-1 mensurate with said ..front open-ingrand; hinge mechanism arranged :within said. doorway rearswardly of said ledge and:positionedzbetweenssaid bottom flange and the lower portion of said door; forsupporting said door upon said vat and-for mounting-said door within said doorway for movements with respect to said frontopen-ing between i s a, substantiallyhorizontal. .open position a substantially vertical closed position, the"lower portion of said door being arranged in straddling} and below said; ledge-when said door occupies its closed position.

' 2. In'wash-ingapparatus, a vat provided W nn-sf forwardly direoteddoorway terminating ina sub 24 stantially vertically disposed-:iront openim; said cloorway having a bottom fiange-an'd opposed side flanges; said bottom flange being providedwvith an upwardly-directed ledge extending between said side flanges and terminating adjacent to said front opening, a single door substantially commensurate 1 with said front opening; and hinge mechanism for" supporting said door up'on said vat and for'rnounting said door within saidd'oorway for movements with respect vto said front opening between a substantially horizontal open position anda substantially vertical closed'position, said meohanism including' a first hinge part carried byl said bottom flange rearwardly of said ledge and-a cooperating second hingepart carried by th'e lower portio'n 'of said :door, the lower 'por- 'tion of said door beingarranged in straddling relation with respect to saidledge so that the lower 'innenedge of said door is disposed rearwardly. ofeand below said :ledge and the lower outer edge of said-door is disposed forwardly oi and below said ledgetwhen said-door occupies its closed-position, said first and second hinge parts being readily disengageable when said door occupies an intermediate position withrespect-to its open and closed positions in order'to permit the complete removal of said door from said doorway.

3. In washing: apparatus, a vat provided with-a forwardly.directeddoorway terminating in a sub stantially vertically disposed front opening, said door-Way having a bottom flange and opposed side flanges-said bottom flangepbeing provided with an upwardly directed ledge extending: Y between said side" flangesiand'teri-ninating adj-acentito said front opening a door,'rhinge -mechanismfor supporting said door upon said vat and for mounting said; single. door substantially com mensurate with said front opening within said doorway for movements with respect to said front openingabetween :a substantially horizontal open position: and: a substantially vertical closed-position, said mechanism including a first hinge part carried by said -bottom' fiangerearwardly of said ledge and a cooperating second hinge i part carried by: the lower-portion of said door, the lower portion of said door beingarranged in straddling relation with respect to said ledge so thatthelower inner edgeof said door is disposed rearwardly of and below said ledge and thelower outer edge of said door is disposed-forwardly of and below said ledge when said door occupies-its closed position, said first "and: second hinge parts being readily. disengageable' when-saiddoor; occupies an intermediate position with respect to its'operrand closed positions; in order to permit the :complete removalof said-door from said doorway, and means including said ledge-engaging said second; hinge part for supporting said dOOI' V/hlllib occupies its open position; v H 4. In washing apparatus, a vat provided with a forward'ly idirected doorway terminating in a substantially. vertically disposed front opening, said 'doorwayhaving 'a bottom flange and opposed side :flanges, said-bottom flange-'bei-ngprmvided with an upwardly directed ledge: extending between said-"side fiangesrand terminating adjacentwto said frontopening, asingle door substantially commensurate'with said front opening and provided with inner-and outer sheets secured: together in i spaced-apart relation, and binge; mechanism arranged within, said doorway rear-f ward-ly of said ledgeandpositioned 'betweensaid bottomflange and the l'ower portion oi said-inner sheet for supporting said doo'r' upon said vat. and for-mounting said ,doorvw-ithinl vsaididoor-"wayior movements with respect to said front openin between a substantially horizontal open position and a substantially vertical closed position, the lower ends of said sheets being arranged in straddling relation with respect to said ledge so that when said door occupies its closed position the lower end of said inner sheet is disposed rearwardly of and below said ledge and the lower end of said outer sheet is disposed forwardly of and below said ledge.

5. In washing apparatus, a vat provided with a forwardly directed doorway terminating in a substantially vertically disposed front opening, said doorway having a bottom flange and opposed side flanges, said bottom flange being provided with an upwardly directed ledge extending between said side flanges and terminating adjacent to said front opening, a single door substantially commensurate with said front opening and provided with inner and outer sheets secured together in spaced-apart relation, hinge mechanism cooperating between the lower portion of said doorway and the lower portion of said door for mounting said door within said doorway for movements with respect to said front opening between a substantially horizontal open position and a substantially vertical closed position, the lower ends of said sheets being arranged in straddling relation with respect to said ledge so that when said door occupies its closed position the lower end of said inner sheet is disposed rearwardly of and below said ledge and the lower end of said outer sheet is disposed forwardly of and below said ledge, a recess formed in the lower portion of said inner sheet and disposed just above said ledge when said door occupies its closed position, a rearwardly opening detergent receiving cup carried in said recess and arranged between said sheets, and means for producing a spray of washing liquid in said vat and for directing a portion of the washing liquid into said cup opening when said door occupies its closed position.

6. In washing apparatus, a vat provided with a forwardly directed doorway terminating in a substantially vertically disposed front opening, said doorway having a bottom flange and opposed side flanges, said bottom flange being provided with an upwardly directed ledge extending between said side flanges and terminating adjacent to said front opening, a single door substantially commensurate with said front opening and provided with inner and outer sheets secured together in spaced-apart relation, hinge mechanism cooperating between the lower portion of said doorway and the lower portion of said door for mounting said door within said doorway for movements with respect to said front opening between a substantially horizontal open position and a substantially vertical closed position, the lower ends of said sheets being arranged in straddling relation with respect to said ledge so that when said door occupies its closed position the lower end of said inner sheet is disposed rearwardly of and below said ledge and the lower end of said outer sheet is disposed forwardly of and below said ledge, a recess formed in the lower portion of said inner sheet and disposed just above said ledge when said door occupies its closed position, a rearwardly opening detergent cup carried in said recess and arranged between said sheets, means for producing a spray of Washing liquid in said vat and for directing a portion of the washing liquid into said cup opening when said door o p es its closed position,

and means including an outwardly directed flange surrounding said cup opening and spaced rearwardly from said inner sheet for preventing the washing liquid running down said inner sheet from entering said cup opening when said door occupies its closed position.

7. In washing apparatus, a vat provided with a forwardly directed doorway terminating in a substantially vertically disposed front opening, said doorway having a bottom flange and opposed side flanges, said bottom flange being provided with an upwardly directed ledge extending between said side flanges and terminating adjacent to said front opening, a single door substantially commensurate with said front opening and provided with inner and outer sheets secured together in upwardly approaching spaced-apart relation, and hinge mechanism for supporting said door upon said vat and for mounting said door within said doorway for movements between an open position with respect to said front opening wherein said inner sheet occupies a substantially horizontal position and a closed position with respect to said front opening wherein said outer sheet occupies a substantially vertical position, said mechanism including a first hinge part carried by said bottom flange rearwardly of said ledge and a cooperating second hinge part carried by the lower portion of said inner sheet, the lower ends of said sheets being arranged in straddling relation with respect to said ledge so that when said door occupies its closed position the lower end of said inner sheet is disposed rearwardly of and below said ledge and the lower end of said outer sheet is disposed forwardly of and below said ledge.

8. In washing apparatus, a vat provided with top and bottom walls and opposed side walls terminating in a forwardly directed doorway, said doorway having top and bottom flanges and opposed side flanges, said flanges terminating in a substantially vertically disposed front opening, said bottom flange being provided with an upwardly directed ledge extending between said side flanges and terminating adjacent to said front opening, a single door substantially commensurate with said front opening, hinge mechanism for supporting said door upon said vat and for mounting said door within said doorway for movements with respect to said front opening between a substantially horizontal open position and a substantially vertical closed position, the lower inner edge of said door being disposed rearwardly of and below said ledge when said door occupies its closed position, means for producing a spray of washing fluid in said vat when said door occupies its closed position, a top door baffle and opposed side door baffles carried by said door and projecting rearwardly in respective cooperating relation with said top and side flanges when said door occupies its closed position, said side door bailies projecting rearwardly from within said doorway into said vat when said door occupies its closed position, and opposed side wall baflles carried by said side walls and projecting inwardly into respective cooperating relation with said side door baflles when said door occupies its closed position, said side door bafiles and said side wall baffles being arranged in nonscraping relation to permit ready movements of said door and cooperating when said door occupies its closed position to limit the admission of said washing fluid into said doorway, said top and side door baflles and said top and side flanges being arranged in non-scraping relation to per-

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