US2739025A

US2739025A - Dishwasher rack

Info

Publication number: US2739025A
Application number: US261978A
Authority: US
Inventors: Edgar S Stoddard
Original assignee: General Electric Co
Current assignee: General Electric Co
Priority date: 1951-12-17
Filing date: 1951-12-17
Publication date: 1956-03-20
Anticipated expiration: 1973-03-20

Description

March 1956 E. s. ISTODDARD ,739,

DISHWASHER RACK Filed Dec. 17. 1951 5 Sheets-Sheet 1 26 FIG. 3 68 6 49 as INVENTOR.

. 5 Edgar SqSfoddard BY 33 63 M Affys.

March 20, 19 6 E. s. STODDARD DISHWASHER RACK 5 Sheets-Sheet 2 Filed Dec. 17, 1951 FIG. 6

INVENTOR. Edgar S. STOddard Affys.

E. s. STODDARD 2,739,025

DISHWASHER RACK March 20, 1956 Filed Dec. 1'7, 1951 5 Sheets-Sheet 3 HUM] Edgar $.510ddard IN V EN TOR.

QZMWWM q Affys.

March 20, 1956 E. S. STODDARD DISHWASHER RACK Filed Dec. 17. 1951 5 Sheets-Sheet 4 JNVENTOR. Edgar 5. Sfoddard Mar h 0, 1956 E. 5. STODDARD DISHWASHER RACK 5 Sheets-Sheet 5 Filed Dec. 17, 1951 HIM FJ INVENTOR. Edgar S. Stoddard M, 04940 +a-lwl Affvs.

- 2,739,925 msHWASnEnRAC-K Edgar-.8. Stoddard, Berwyn, "L, assignor t e-General ElectricCompanym corporation of Yuri;

Applicafion'Dccember 17, 1951, Serial Muzak-97%- 3 Claims. cine-4a) The present invention relates to dishwashing appara- -tus;and more particularly *to improved dishracks'for dish- "Washing apparatus of 'the general character of that disclosed'inthe copending application of Forrest A. Walker, Serial No. 57,448, filed October 3.0, 1948, now Patent No. 2;65 7;697', granted November 3, 1953.

This dishwashirrg apparatus disclosed in the Walker application mentioned is of the timed washing'cycle type that performs automatically in predetermined sequence given 'steps including spraying, washing, rinsing and drying of the'dishes and other utensils contained therein. The apparatus comprises an upstanding cabinet housing an upstanding vat, the cabinet and the vat being provided with aligned vertically disposed front openings, and a front door for closing the front openings, the front door being mounted for movements with respect to the front openings between-a substantially vertical "closed position and a substantially horizontal open position. Alsoin the apparatus an open-wire-work dishrack is provided ma includes three individual and separable sections "consist ing of 'a lower platerack and an upper outer cupracl; and

an upper inner glassrack, the dishrack being movable as a unit into and out of the vat through the front openings and over the front door in its open position;

While this dishra'ck arrangement is entirely satisfac tory andeficient in operation, it is subject to the criticism that incid'en'tto loading plates or the like into the lower platerack, it is necessary completely to remove the upper inner'glassrack from the upper outer cuprack, Also,'on occasion, it is necessary to remove bothth'e upper inner glassrack and the upper outer cuprack in order to gain easy access to the lower platerack.

Accordingly, it is the general object of the present invention to provide in dishwasliing apparatus of the character noted an improved dishrack including individual and'separable upper and lower sections that are'aljso mountedfor relative movements therebetween so that the two sections may be moved into an open position with respect to each other permitting access into the lower section without complete removal of the upper section from the lower section.

Another object of the invention is to provide an improved dishrack for dishwashing apparatus of the character noted, including a lower platerack and an upper outer cuprack and an upper'inner glassrack that are so constructed and arranged that they may be readilyassembled and disassembled with respect to each other and readily placed and removed with respect to the dishwashing apparatus, and wherein the upper outer cuprack and the upper inner glassrack are arranged for movements as a unit-with respect to the lower platerack while the three racks are assembled with respect to each other.

A further object of the invention is to provide ina dishrack of the character noted an improved arrangement for mounting the upper cuprack upon the lower platerackfor rolling movements with respect thereto.

A 'still further object ofthe invention is toprovidethe combination of dishWashing-apparatus and'dishrackstruc- 7 2,739,025 Patented Mar, 20, 1956 ture or the character noted, 'wher'in'the lo'werplaterack is mounted ff'rolling movements uponthe apposed s'ide walls'of the vat an d' up'onthe inner wall of the front door in its open, position, and wherein the upper cuprackis mounted for independeritrolling' movements upon the opposed isidew'allsbf the "van and upon the lower plate-- rack.

Further featuresoffthe invention pert'ain t'o the'particular arrangement of the elements'ofthe 'di'shwashiiig apparatus and of the dishrack, whereby the abov'e outlined and additional 'qperatin features thereof areaittained'. v

'Thejirivention, both as 'to its 'or'ganization andfme'thod of operation, together with further objects and advantages thereof, will bestbe understood by referenceto the followingspecification taken in connectionwith the accompanying drawings, .in' which' Figure 1 is anon elevation'al View; partly broken 'aw'a'y,:of .di's'hwaslu'ng "apparatus incorporatinga dishraclr'ahd embodying'the present invention; Fig. 2 is a vertical sectional view of the dishwashing apparatus, "taken in the direction of the arrows alongthelihe'Z-Z in Fig, 1; Fig. 3 is a horizontal sectionalvi'ew,partlybroken away, ofthe dishwashing apparatus,'t'ak enin.ithe direction of the arrows along the line '3--3 in Pig. 2; .Fi'g. '4 'is a fragmentary horizontal sectional view of the dishwa'shing apparatus, "illustrating the front door'thereof in its open position; Fig. 5 is a fragmeiitary'vertical sectional view of the dishwashing apparatus, taken in "the direction of the arrows along the line 55 in Fig. 3 illustratinga part of the arrangement for mounting the 'dishr'a'ck uponthe opposed sidewalls or the vat ot th apparatus and. the cooperation between the I shra'ck-and the front door; 6 is "an enlarged part ally exploded 'sidefelevational view of the composite dishrack, il'lu's'tratmg the three individual sections thereot' respectively- 'consis'ti'ngofa lower .platerack and an upper outer cupr'aok and'an lupp'enin'n'er gla'ss'rac'k; Fig. '7 is an enlarged plan view, partly broken away, of the lower plateracli'; Fig. 8 is an enlarged front elevational view of V the low'erplate rack; Fig. 9sis' an, enlarged fragmentary plan view of the upper outer 'cup'rack; Fig, lOis an enlarged fragmentary vertical sectional view of the upper right-hand side or the upper outer .cu'pl'ack, illustrating the cooperation therentcwitnthe adjac nt 'right hand side within the var when the from door. occupies "its dosed ositiomFig. 1 2 1* an enlargedrra niemaiy verticatfec- .ti naiiview f-the; "er porti n ofithedishwa'shing appara'tns,1;similar n Fig. '11, illustrating the 'positi or lower platera'ck within the var when the front. door occup'ie 'ts ope'liposition; Fig. 1.3 is an enlargedfr'aginentaiy verti al; sectional view or the lower. portion of. the dishwasliingapparams, similar to Figs ii and 12, illustrating the lower platerack inits partially withdiawnpos'itionwithrespect to the vat and the front door in itsopen position; Fig; 14 is an enlarged 'ffagrnenta'r y vertical sectional view of the lower portion. of the dishwashiag apparatus, similar to Figs. {1-1, 12'. and t3, illustrating the lower platerackin its fully. withdrawn position with respect to t'he fullywithdraw'n position of'fhe lower nineteen and the partiaily' witireirawn positions of the" upperoIiE'rcup -rack-and rhe-upper inner-glassraclej'and 'l ig; 17 ia' diad fragmentary ent;

grammatic vertical sectional view of the dishwashing apparatus, taken through the vat and the front door in its open position, similar to Figs. and 16, illustrating the lower platerack in its fully withdrawn position and the upper outer cuprackand the upper inner glassrack in their detached positions beyond the fully withdrawn positions thereof. In different ones of Figs. 6 to 14, inclusive, various ones of the individual wires incorporated inthe dishrack have been omitted in the interest of clarity; and in Figs. 15-17, inclusive, only the general outlines of the three sections of the dishrack have been shown so that the relative movements ,therebetween may be best illustrated.

Referring now to Figsrl to 4, inclusive, the dishwashing apparatus there illustrated is of the general character of that disclosed in the previously mentioned Walker application and incorporates a dishrack 21 and embodies the'features' of the present invention. More particularly, the apparatus 20 comprising an upstanding cabinet 22 housing an upstanding vat 23, the cabinet 22 and the vat 23 being provided with aligned vertically disposed

front openings

24 and 25, respectively, and a front door 26 associated with the front openings 24 and and mounted adjacent to the lower edge thereof for movements with respect to the

front openings

24 and 25 between a substantially vertical closed position and a substantially horizontal open position. The vat 22 includes a top wall 27, a bottom wall 28 provided with a substantially centrally disposed sump 29, a rear wall 30, and a pair of

opposed side walls

31 and 32; while the front door 26 includes spaced-apart inner and outer walls 33 and 34, respectively.

Washing liquid is supplied to the vat 23 by a fixture 35 carried adjacent to the central portion of the top wall 27 from an inlet conduit 36 via a connection including an inlet valve 37 that is normally biased into its closed position and operated into its open position by an associated solenoid 38; while the washing liquid is drained from the vat 23 by a fixture 39 communicating with the sump 29 into a drain conduit 40 via a connection including a drain valve 41 that is normally biased into its open position and operated into its closed position by an associated solenoid 42. When the inlet valve 37 is operated into its open position the washing liquid is sprayed downwardly from the fixture 35 through the dishrack 21 and the supported dishes and accumulates in the sump 29, the washing liquid being drained from the sump 29 or retained therein depending upon the position of the drain valve 41. The inlet conduit 36 is connected to a suitable source of washing liquid supply, not shown, such, for example, as the tank of a hot water heater; and the-drain conduit 40 is connected to drain plumbing, not shown. Also an impeller 43 is arranged within the sump 29 and operated from an electric motor 44, the impeller 43 being mounted directly upon the upper end of the vertically disposed shaft 45 of the motor 44 projecting through the adjacent bottom wall of the sump 29. Rotation of the impeller 43, when the drain valve 41 occupies its closed position effects an upward swirl of the washing liquid fromthe sump 29 through the vat 23 and the dishrack 21, whereby the supported dishes are subjected to bombardment with the washing liquid droplets so as to effect a thorough cleaning thereof. The upwardly directed washing liquid strikes the various walls 27, etc., of the vat 23 and the inner wall 33 of the door 26 and returns downwardly back into the sump 29, whereby the washing liquid is circulated by operation of the impeller 43. Also a reticulated screen 46 surrounds the impeller 43 in order to prevent suspended solids from being caught up in the impeller 43 and hurled back through the dishes supported by the dishrack 21. Further an electric heating unit of the sheathed resistance conductor type 47 is arranged in the lower portion of the vat 23 in surrounding relation with respect to the impeller 43, whereby air may be circulated by the impeller 43 in the vat 23 over theheating unit 44 and thence into contact with the dishes supported by the dishrack 21 so as to obtain a drying action thereupon. Finally the apparatus 20 is provided with a timer, not shown, and an electric circuit, not shown, that is controllable by a pushbutton 48 carried adjacent to the upper left-hand front side'of the cabinet 22, whereby the electrical elements named may be selectively controlled so as to carry out a timed cycle of operation including spraying, washing, rinsing and drying steps.

Referring now more particularly to Figs. 6 to l0, inclusive, it will be observed that the composite dishrack 21 comprises a lower platerack 49, an upper outer cuprack 50 and an upper inner glassrack 51, each of which is preferably formed of open-wire-work stainless steel construction. Each of the

racks

49, 50 and 51 is substantially rectangular in plan and of such width that it may be readily moved into and out of the vat 23 through the

front openings

24 and 25 when the front door 26 occupies its open position; and'the cuprack 50 is detachably secured to the upper portion of the platerack 49, as explained more fully hereinafter; and the glassrack 51 is detachably secured to the upper inner portion of the cuprack 50, as explained subsequently. The lower structure of the platerack 49 carries a substantially horizontally disposed framework 52 that, in turn, carries a reticulated screen 53 for the purpose of preventing any loose dish or other utensil from falling through the platerack 49 and coming into contact with the rotating impeller 43. Also the lower structure of the platerack 49 carries an upstanding substantially centrally disposed open basket 54 that is adapted removably to support an upstanding reticulated silverware receptacle, not shown, as well as a plurality of angularly spaced-apart upstanding substantially U- shaped brackets 55 that are adapted to receive the individual plates therebetween so as to hold the plates in an upstanding position in order that the upward swirl of washing liquid may pass therethrough in bombarding relation therewith and be deflected thereby further upwardly into the cuprack 50 and the glassrack 51. The cuprack 56) comprises substantially U-shaped structure 56 providing an elongated U-shaped pocket that is adapted to receive the cups in an inverted position; while the glassrack 51 comprises upstanding substantially centrally disposed structure 57 defining a substantially annular pocket to receive the glasses in an inverted position.

Again reverting to the platerack 49, the lower rear structure thereof carries two laterally spaced-apart fixtures 58 that, in turn, carry two laterally spaced-apart and aligned rollers 59; also the lower rear structure of the platerack 49 carries two laterally spaced-apart fixtures 60 that, in turn, carry two laterally spaced-apart and aligned rollers 61. Further the lower front structure of the platerack 49 carries a substantially centrally disposed fixture 62 that, in turn, carries a roller 63. Finally the lower front structure of the platerack 49 carries two laterally spaced-apart wires 64 that, in turn, are provided with downwardly facing feet 65. As best shown in FigsgG, 7 and 8, it will be observed that the rear side rollers 61 are disposed well behind the front center roller 63 and slightly thereabove; while the rear side rollers 59 are disposed well behind the rear side rollers 61 and well thereabove. Also the front center roller 63 is centrally disposed with respect to the center line of the platerack 49; while the

rear side rollers

59 and 61 are disposed well on opposite sides of the center line mentioned, the rear side rollers 61 also being disposed somewhat inwardly with respect to the rear side rollers 59. Finally the front side feet 65 are disposed well behind the front center roller 63 and well ahead of the rear side rollers 59, the front side feet 65 being substantially aligned longitudinally with respect to the rear side rollers 59.

Reverting now to Figs. 1 to 5, inclusive, the

opposed side walls

31 and 32 of the vat 23 are provided with opposed and aligned substantially horizontally disposed and inwardly projecting trackways 66 that cooperate with fireman the-respectiverear siderollers 59 ,carriedhy the platerack 246?, the .sidetraekways 66 being slight yv declinedtoward the rearwall 3,0 of the vat and: being positioned well fabovetthe, impeller 43. The inner wall33of the door 26 shownin Figs. 11 to 14,"inc1usive,:theside trackways 68 lcarried by the inner wall 33 are tapered from the OPPosite ends thereof to a slight crown 68, for a purpose .morefully explained hereinafter. Finally the inner wall 133 of the front door26 is provided with a substantially r i centrally disposed tail 33 arrangedinalignment with the innerend of the central trackway 67 and cooperatingwith the front center roller 63 carried bythe platerack 49.

Referring now to-l-Tigs. l, 3', 5 and 11, it is noted that when theplateraek 49 occupies-its.positionentirely within the vat 23 and the front door 26 occupies its closed position,,the rearside rollers 5,9,respectively engage the rear ends of the side trackways 66 andthe front sidefeet 65 respectively engage the front ends of the side trackways- ;,6.6 ,.-while the rear side rollers 61 and the front centerroller 6,3;dis engage the adjacent structure at this time; whereby the platerack 49 is supported entirely by the

side walls

31 and 32 of the vat 23 upon the rear side rollers 59 and the front side feet 65 providing a four-pointsupport for ,theplateracl; 419. Now as illustrated in Figs. 5 and 12, when thedoor 26 is moved into its open position, the tail .33 provided on the inner wall 33 engages the front center roller 63 and lifts the front of the platerack 49 from the dotted position to the solid position shown, whereby the ,frontjside feet 65 respectively disengage the front ends ofthe side trackways 66 carried ,by'the side walls 31' and 32 ofthe vat 23. Accordingly, at this time, the rear side rollers 59 respectively engage the rear ends of the side 'trachways 66' and the front center roller 63 engages the ,tail 33 adjacent to the beginning of the center trackway 67 carried by theinner wall 33 of the front door 26 providing a three-point support for the platerack-49.

At this time, the platerack 49 may be rolled forwardly out of the yat 23 over the front door 26 from the position shown in Fig. 12 first into the position shown in Fig. 13. and ultimately into the position shown in Fig. 1 4. During the initial movement of the platerack 49 the rear side rollers 53? respectively roll upon the side track-ways .66., and the front center roller 63 rolls upon the-center trackway 67, whereby the platerack 49 is moved through the front openings 24; and out of the vat 23 and over the front door 26. When the platerack 49 is moved into theposition illustrated in Fig. 13, the rear side rollers. 61 respectively engage the side trackway 68 carried on the '-opposite sides of the inner wall 33 of the front door 26; whereby at this time, a five-point support is provided for the 'platerack 4,9. As the platerack 49 is moved further forwardly from the position illustrated in Fig. 13 toward the position illustrated in Fig. 14, the rear side rollers 59 espectively disengage the front ends of the side trackway 6 6,a n d the rear side rollers 6 respectively engage and then roll oyer the crowns 63' provided in the central portions of the side trackways 68 biasing the platerack 49 ,intoits final position disposed over the front door 26, as illustrated in Fig. 14.

When theplaterack 49 is disposed substantially entirely out, of the vatf23 and 'over the front door 26, as illustrated in Fig. 14, it may be readily removedfrom the inner wall 33 ofthe front' door 26 by lifting thereupon. 'Th'is, arrangemeiitpermits, the complete removal of the platerack framer apparatus 20 so that the interior or chamber definedin 'the vat 23 may be readily cleaned. Subsequntly the platerack 49 may be replaced upon the front door zest-its open position, as illustrated in Fig. 1.4; and thereafterthe platerack 49 may be returned back into th'e 'v'at "2 3 iii'its position illustrated in Fig. 12-. Thereafter the; front noorezfiimayz bemeiutane aiinte. i iQlOSQ LEPQSifiDI returning the platerack 49 into itsmormalxl ositionzsup- .5 e mg; 12-, it is biased .h prdemp p e en -me o she Piet rs s? r om striki th rea w l te e p ce R5639 t th t w ap resi ie pa s i en kna portion thereof. J 1, be rd b dandt atten o h i qn i trate m mounted upon the upper f r m em he e it a illi-i1h pra kJSiJ-is,also mountedfor tell 'thf ssrs te h trl a k eale Di urbe in R sean a dfina ly h KC P -5 i s ashab s wit rea es t rt f a cra 9, as u trat ,in Eig., l ,7;. Referringtp ligs 6:tQ lQ,-'l'11Clt'l S iYe,itwlll .be ,observedrthat the; uppenre portions ofst-he platerack 4. .Pegt e1 -ssr w .ilet a .spass 1 Pm xt e 3G- 7.1 that, gin turn, qarryf rontnand rear ,pairs of aligned r lers -72. and 1%; an s elower s de o t of h ra y spa e -snar an l n v 1;" I embe *lethgtms resnes ise r arran ed i le a ali nmen and .co- .qPsIat n-s rela n wi h one of sash o he pa s of rear side rollers 72 and-73u Morepartieularly, each of the s detr ls mem is 4 y $il1 i13 1y i l-sh p d including su e and t ner: a ai 7 ant Wa da s c -n brid e 1? d ea ed ad acen ate th tum; o h cunres fii Whe th su ra k Suspende t mal p ti nzdispes ie Kat e a s raqk 14 a us a i is fism i time lie s" e i po b tw th stee and lower m1 7. an 1610mm res ect eside thank. members 74; and t-he. rear .side rollers 73 ared-isease -beh nd n i e isnme t'wi the r r s -th -rs pe 'Ye de hee s memhe 4.- Also t upr c 0 i "Ne is e2 dja en to hss pssit fr-. o er he o w th w nes' t at e s d wnw rd teens f om feet 75 .4 9 i turn. OQPW E- MI 4PWardlaG from f et 3!! sa a ed b w e i i o e r ia eet tethe P- P. et o orne o th i tera ls 49-- Acc di ly wh n? he surms 5 s sunies s r a p si n i ea ed ev e e c as s 491m. illustr ted n Fi s.- and 15 h ea i -t e cun aek 9 is upp r ed yssessme t et ee t my nail and h e r si e I rollers .72', and the front of. the cupraek- 50 is supported by the engagement between the .sidefeet 79 carried by the respect to the, plateraek 49, as illustrated in Fig. 16,

merely by pushing upon the front of the cuprack' 50. As the cuprack50- ismoved out of its closed position, illustrated in Fig. 15, rearwardly toward its open 'position, illustrateddn Fig, 16, the side track members 74 move therewith toward the; rear, whereby the rear side rollers 73 respect ively enter 'betweenthe top and botthe iside raekway 1 a .-il-.l s.trated 3 w hin hj r blew,

toi n 'rails75" a'n'd '7 of the side track members 64 in v order to insure adequate support of the cuprack 50 during the movement noted.

Also the upper rear sides of the cuprack 50 respectively carry two laterally spaced-apart and aligned straps 82 that, in turn, carry adjacent to the upper ends thereof, two laterally spaced-apart and aligned rollers 83. Further the upper portions of the

side walls

31 and 32 of the vat 23 are provided with two longitudinally extending and laterally spaced-apart and aligned trackways 84 that cooperate with the'upper rear side rollers 83 as the cuprack 50 is moved into its open position with respect to the platerack 49, as illustrated in Fig. 16. More particularly, when the cuprack 50 occupies its open position with respect to the platerack 49, as illustrated in Fig. 16, the front of the cuprack 50 is supported by the engagement between the top rails 75 of the side track members 74 and the cooperating lower

rear side rollers

72 and 73, and the rear of the cuprack 50 is supported by the engagement between the upper rear rollers 83 and the upper side trackways 84. Also at this time, the connecting bridges 77 provided between the upper and

lower rails

75 and 76 of the side track members 74 respectively engage the lower rear side rollers 72 positively establishing the open position of the cuprack 50 with respect to the platerack 49, as illustrated in Fig. 16. Thus it will be understood that the cuprack 50 may be moved between its positions, respectively illustrated in Figs. 15 and 16, with respect to the platerack 49 in a ready and convenient manner by virtue of the mounting arrangement, above described. This selective movement of the cuprack 50 with respect to the platerack 49 accommodates placement and removal of plates in the platerack 49 when the cuprack 50 occupies its open position with respect thereto, as illustrated in Fig. 16; whereby the loading and unloading of plates with respect to the platerack 49 is considerably simplified.

As previously explained, the cuprack 50 is detachable from the platerack 49, when the platerack 49 occupies its withdrawn position disposed over the front door 26 in its open position, as illustrated in Fig. 17; and this may be accomplished merely by rollingthe cuprack 50 forwardly while lifting the front end thereofslightly with respect to the platerack 49, from its position illustrated in Fig. 15 into its position illustrated in Fig. 17 causing the top and

bottom rails

75 and 76 of the side track members 74 respectively to disengage the lower rear side rollers 72, and the disengagement of the cooperating pairs of

front feet

79 and 80. In order to accommodate the movement of the'cuprack 50 forwardly with respect to the platerack 49 and the detachment of the cuprack 50, as illustrated in Fig. 17, the top front wires 81 provided adjacent to the corners of the platerack 49 are further respectively provided with downwardly depressed loops 85, as shown in Figs. 6 to 8, inclusive, accommodating the passage therethrough of the respective track members 74 carried by the cuprack 50. Ofcourse it will be understood that the cuprack 50 may he subsequently replaced in position upon the upper portion of the platerack 49, as illustrated in Fig. 15. This arrangement permits ready placement and removal of the cuprack 50 with respect to the platerack 49 for purposes of cleaning. Since the cuprack 50 is movable rearwardly with respect to the platerack 49, a pair of laterally spaced-apart resilient pads 86 are carried by the rear portion thereof in order to prevent hard striking with the rear Wall 30 of the vat 23, and the attendant noise.

As previously explained, the glassrack 51 is normally carried by the cuprack 5i) and movable therewith; however, the glassrack is detachable with respect to the cuprack 59. as illustrated in Fig. 6. In order to achieve this result, the rear of the glassrack 51 is provided with a laterally extending hook-like wire 87 that detachably engages a cooperating laterallyextending wire 88 carried by the upper rear portion ofthe cuprack 50, and the front of the glassrackSI carries a laterally extending handlebeen provided in dishwashing apparatus of the front opening type, an improved dishrack including individual and separable upper and lower sections that are mounted for rolling movements as a unit into and out of the vat of the apparatus through the front opening when the associated front door occupies its open'position, wherein the upperand lower sections of the dishrack are also mounted for relative movements therebetween so that the two sections may be moved into open and closed positions with respect to each other, accommodating ready placement and removal of the dishes in the lower section when the upper section occupies its open position with respect thereto.

While there has been described what is at present con sidered to be the preferred embodiment of the invention, it will be understood that various modifications may be made therein, and it is intended to cover in the appended claims all such modifications that fall within the true spirit and scope of the invention.

What is claimed is:

l. in dishwashing apparatus including a vat having laterally spaced-apart side walls and defining a chamber provided with a substantially vertically disposed front opening, and a front door having an inner wall and associated with said front opening and mounted for movements with respect thereto between a substantially vertical closed position and a substantially horizontal open position; the combination comprising a lower platerack of open wire-work construction and movable through said from opening into and out of said chamber when said front door occupies its open position, first means for mounting said platerack for rolling movements into a first position disposed within said chamber and into a second position disposed over said front door in its open position, an upper cuprack of open Wire-work construction and movable through said front opening into and out of said chamber when said front door occupies its open position, and second means for mounting said cuprack for rolling movements into a third position disposed in said chamber over said platerack in its first position and into a fourth position disposed partly in said chamber and partly over the rear of said platerack in its second position and into a fifth position disposed over said platerack in its second position and into a sixth position disposed forwardly of and detached from said platerack in its second position; wherein said second roller mounting means includes a first pair of laterally spaced-apart and aligned trackways carried by the upper portions of said side walls of said vat, a first pair of laterally spaced-apart and aligned rollers carried by the upper rear sides of said cuprack and cooperating with said first pair of trackways, a pair of laterally spaced-apart and aligned track members carried by the lower sides of said cuprack, each of said track members being substantially U-shaped and provided with upper and lower track rails connected at the front ends thereof and open at the rear ends thereof, and cooperating second and third pairs of laterally spacedapart and aligned rollers carried by the upper rear sides of said platerack, said second and third pairs of rollers being arranged in rear and front relation with respect to each other and being receivable between the upper and lower track rails of said track members, the connections at the front ends of said track members engaging said third pair of rollers when said cuprack occupies its fourth position, the rear ends of the upper and lower track rails of said track members disengaging said second and third pairs of rollers when said cuprack is moved into its sixth position, said first pair of rollers disengaging said first pair of trackways when said cuprack is moved into its fifth position.

2. The dishwashing apparatus combination set forth in stantially centrally disposed opening therein, and further comprising a glassrack of open Wire-work construction detachably secured to said euprack within said opening and movable with said cuprack into said third and fourth claim 1; wherein said platerack and said cuprack respec- 5 and fifth positions.

References Cited in the file of this patent UNITED STATES PATENTS 499,310 Towle June 13, 1893 1,184,978 Meilink May 30, 1916 1,761,303 Hunter June 3, 1930 1,782,523 Warren Nov. 25, 1930 1,946,181 Stoddard Feb. 6, 1934 2,290,653 Stoddard July 21, 1942