Патент USA US2127017код для вставки
Aug._l6, 1938, w. R. WALKER 2,127,01 '7 DISHWASHER Filed 001:. 17, 1935 ATTORNEY 2,121,017 Patented Aug. 16, 1938 UNITED STATES‘ "PATENT OFFICE" 2,127,017 , msnwasnsa' ‘ Wlllard E. Walker, Syracuse, N. Y. ‘ Application October 17, 1935, Serial No.~45,439 z ‘Claims. (01. 141-9) I ' Further objects reside in providing a device for This invention relates to certain new and use automatically supplying a cleansing agent to the. ful improvements in dish washing machines and pertains more particularly to a device tor sup washing'?uid of a dish washing machine or the plying cleansing solution to the washing ?uid ci likevwhich is simple, durable'and economical in construction and positive and accurate in opera- 5 5 the machine and to the control therefor. In conventional dish washing machines for - tion. ' ' e - Other objects and advantages pertaining ‘to which my novel cleansing solution supply means is peculiarly adapted to be used there is pro vided a pair oi! chambers, one a washing chamber 10 and the other a rinsing chamber, arranged in ion- the structure oi’ the device and‘to the form and relation of the parts thereof will more fully ap pear from the following description taken injcon- 10 nection with the accompanying drawing in _ gitudinal spaced relation over a common vat-tor the washing ?uid. The articles to‘be cleansed, Figure 1 is a perspective view of a conventional such as dishes, drinking glasses, silver-ware or, the like are stacked in suitable trays and the dish washing machine with my novel cleansing 15 loaded trays are conveyed through the washing agent supply means operatively associated there- 15 machine from one chamber to the other and sub- ‘ with and illustrating a portion 0! the, dish washer jected to a washing spray in the ?rst chamber broken away to better illustrate the parts con which: and to a rinsing'spray in the second chamber tained therein. to effect the washing or cleansing thereof. 'Ihe ' ‘ ‘ . ‘ . » ’ ' Figure 2 is a sectional view on an enlarged 20 rinsing ?uid as water is supplied to the rinsin! scale of the cleansing agentsupply tank and the 20 spray in a pure or clean heated condition.‘ After meter valve associated therewith taken substan- ' the rinsing ?uid is passed over the articles to be tially-in the plane of the line 2-2, Figure 1. Figure ‘3 is a fragmentary side elevation of the cleansed it is collected in thewashing ?uid vat which in turn is provided with an over-?ow pipe metering valve and the adjacent portion or the 25 adapted to maintain a' predetermined quantity supply tank together with the adjacent portion of 25 the gauge for determining the amount 0! cleans of the ?uid therein. . The washing ?uid is supplied by a pump or ing agent contained in the supply tank. other suitable means from the washing ?uid vat to the washing spray and after it passes irom the ' Figure 4 is a detail horizontal sectional view taken on line 4-4, Figure‘2. ' v Figure 5 is a sectional view taken substantially 30 ' 30 spray over the dishes or other articles. it is again returned to the ‘vat and in order that this wash on’line S—5, Figure 1, illustrating my novel oper ing ?uid may be e?ective a quantity oi’ a suitable solvent or cleansing agent is added at intervals ating valve in elevation, portions oi’ said valve being broken away. to the washing ?uid. 'Ihe quantity of the cleans-i _ ‘ I Figure 6 is a vertical sectional view through the 7 35 ing agent and the frequency of the application of . operating valve taken substantially on line H, 35 Figure‘ 5. . . ‘ the same to the ‘washing ?uid has often, hereto ‘Figure 7 is a perspective view of co-acting cam ) fore, been dependent upon the judgment or opin ion of the operator. ' When the cleansing ‘agent members for e?ectingthe-opening and closing of . is thus supplied the application thereot to the the operating valve. - v It will be readily understood that there are nu- 40 40 washing ?uid has been at irregular intervals, the quantity was greatly in excess of the require *merous di?erent designs of washing machines ments and, therefore, this method has resulted in wherein the articles to, be washed are ?rst sub a ‘very inemcient washing ?uid and hasproven jected to the action of the washing ?uid after which they are treated by a rinsing ?uid. and 45 The main object 01' this invention is to provide ' although my‘ novel device for supplying a cleans- 45 a dish washing machine having washing and ing agent to. the washing ?uid is equally adapted rinsing ‘chambers with means for automatically to‘ be used in connection with} washing machines supplying a solvent or cleansing agent to the of dl?erentconstructions, I have chosen a well decidedly wasteful. ' ' ' ' ' ' lrnown simply constructed type‘otdish washing _ washing ?uid at predetermined periods of opera so tion. ' . Another object of the invention is to provide a cleansing agent supply means for the washing ?uid of a machine for washing dishes or the like with, means whereby a predetermined Quantity 5g‘ '0! the cleansing agent will’ be suppiied;_- , ~ ~machine tor illustrating the application of my de- 50 vice to a washing machine. 7 The dish washing machine ‘as illustrated in Figure 1 comprises a case i open at both ends and having therein?a" washing chamber 2, and a rins- " ing chamber 3 which may be divided by a suitable 55 9, 187,017 wall as I composed of either metal or of fabric or the like and which extends transversely of the case and is adapted to permit the articles to be cleansed to pass from one chamber to the other. To the lower portion of the case I is securedya vat I. which extends longitudinally of the case be moving insoluble refuse and food stuil's carried by the dishes or other articles to be cleansed. My novel apparatus for supplying a solvent vor cleansing agent tov the washing ?uid contained in the vat I in this instance, comprises a supply tank or reservoir 25 which may be mounted in any con neath the chambers 2 and I and has the upper venient location as upon the case I as shown in side thereof open and in communication with ' Figure 1. This tank is preferably composed of said chambers. ' ° . ' The case I is further provided with a pair of spray nozzles or manifolds asfI and I arranged in the upper portion of a respective chamber for supplying respectively a washing ?uid and a rins ing ?uid to the articles to be washed. Rinsing 16 ?uid may be supplied to one qgthese spray nozzles as I by any suitable means and from any suitable source not shown, in a manner which will be clearly understood by-t'hose skilled in the art. The washing ?uid is supplied to the other nozzle I 20 in this instance by means of a pump II having the inlet opening’ thereof in communication with the interior of the vat I while the discharge open ing of said pump is. connected with the nozzle I sheet copper or other non~corrosive material and has the upper side thereof provided with an inlet ll opening 26 which is closed by a cover 21 remov ably mounted on the tank. The bottom as 28 of the tank preferably slopes from one end there of toward the other end which is provided with an outlet opening 28in close proximity to the 11 bottom 2I. The supply tank .25 is divided by a partition II which extends transversely across the tank parallel with the end 31 of the tank con taining the outlet opening 28 to form a relatively large supply chamber" and a relatiyely small outlet chamber I3. v ; _ ' V The lower'end oi’ the partition II terminates at short, distance from the bottom 2I to form a pas in any suitable manner as by a conduit II. The sage II connecting the supply chamber with the pump II is driven by an electric motor l2 opera outlet chamber and; this passage may as shown, tively connected therewith. The motor I2 and be covered by a suitable screen II for preventing ’ pumpv II are mounted in the usual manner out side the washing and rinsing chambers upon a base II' which may be supportably connected in undissolved portions of-the cleaning agent from passing from the supbli chamber. A metering valve I‘Iji's secured in any suitable ‘manner to the end II tithe supply tank in com any suitable manner to the case I. In dish washing machines of this type the arti- ' munication with the outlet opening 2I as by a nut cles as. china-ware, silver-ware ‘and glass-ware are usually stacked in“ suitable baskets or trays asv I I and these loaded trays are conveyed through the case I from the washing chamber to the rins ingchamber and for this purpose I have shown a pair of opposed guide tracks II secured to the case I. guide tracks are arranged in parallel spaced relation over the vat I and in this ‘in I stance the trays II are manually moved along II. This metering valveas shown in the drawing comprises a- valve seat” formed in the passage - II which 1 extends longitudinally through said valve from the inlet end thereof to the outlet end.‘ A tapered valve II is mounted in the case II of valve 3‘! to engage the seat 39- and has the stem as I2 thereof provided with screw threads II' which engage in a corresponding internally ‘ threaded plug or cap II mounted in theivalve case II at one side of the passage II. The valve stem said tracks from one chamber to the other. In operation the pump II is- continuously 'oper- ‘I2 extends outwardly through the plug and ‘ Eated bythe motor I2 for pumping the washing through a stumng box as II provided in the outer ?uid from the vat I to the spray nozzle -I where it - end ‘of the plug and has the outer end thereof as as at I1 to provide a convenient means is discharged over the articles to be washed and , ?attened by which the valve may be manipulated ‘by a key 45 ' the tray containing them and then the washing _ ?uid returns to the vat I to be reLcirculated. As ‘ the loaded tray II is moved from the washing ‘ 50 chamber 2 into the rinsing chamber I. said tray comes ;into contact with an operating lever II provided on a control valve "connected in the supply line for the spray nozzle I. As the tray indicated at II Figure I, which maybe removably connected'to the valve stem. To the outer end of the plug II is secured in any suitable manner as by the 'stu?lng box nut II’ -a cup-‘shaped housing II which in this in 60 ‘stance has the outer end portion thereof open and provided with a cap II screw threaded thus engages the lever ‘I I the valve II is opened ' thereon, said cap being provided with a hollow 55 for automatically: supplying the rinsing ?uid boss I2 adapted to receive the outer end of the which preferably consists of clean water heated valve stem I2 thereon as shown vin Figure 4 and to a high degree oi’ temperature to the spray noz connected with the marginal portion of the cap zle I. As the rinsing ?uid escapes from the nozzle II by a plurality of, in this instance, three ra it passes over the contents of the basket and is dially disposed arms I3 which provide a corre deposited into the vat I for replenishing the wash sponding number of sight openings I3’ through ing ?uid contained in said vat. A predetermined which the interior of the housing II may be 60 quantity of washing ?uid is contained in the vat by means of an over-?ow pipe 2| which is prefer Within the housing II, asshown in Figure 4, is ably connected with the vat beneath the washing mounted an index plate or disk II composed of 65 chamber 2, or in other words, in spaced relation thin‘ sheet metal, paper or-the like. The index observed. to the source of supply for said washing ?uid. . ‘It will thus-be seen that as ?uid. 'as water, is added to the washing ?uid during the rinsing, op eration, a corresponding quantity of the washing . - V plate II may be secured in any suitable manner as by glue to the inner end wall of the housing and is provided with a plurality of circumferen 65 tially spaced indicia II by which the position of will escape through the over-?ow pipe 2I, ' the valve Il may be determined, said valve being provided with a pointer II secured in any suit together with any cleansing agent which may be contained therein and, _therefore. it becomes nec ' essaryto add a certain amount of cleansing agent to the washing ?uid to maintain the same at ‘a 75 given standard for ei'iicaciously loosening and re-_ able manner to the valve stem I2 adjacent the nut II’ for co-acting with the indicia on— the index plate II. ‘ ' As shownin the drawing the metering valve 31 75" 2,127,017 v 3 has connected thereto a contents gauge 58 which in this instance, comprises a tubular metal case 59 secured to the valve case and which contains a glass tube 66‘ which has the lower end thereof in communication with the passage 46 of the valve between the inlet opening thereof and the valve seat 39. The tubular case 59 is provided with a disk valve 66 is in engagement with the seat 66 and hasythe lower end thereofconnected with the‘case of the valve 65 as shown in Figure 5. longitudinal slot in one side thereof for expodng released will‘ function to return said am to its It will thus be seen that when the arm 84 is rocked in either direction for lifting the disk valve 68 from ‘the seat 66 the spring 65 will be tensioned thereby and as soon as the arm 84 is _ normal position and thereby return the disk 10 said tube is provided with the usual marks or -va1ve 68_t0 the closed position in engagement with ‘the seat 66. The valve 66 as shown more indicia 60' arranged in longitudinal'spaced rela tion to be ‘observed throughJthe slot; It will thus 'clearly'in Figure 1 is secured to one side of the the adjacent portion of the ‘glass tube-66, and be understood that the solution contained in the supply tank may ?ow upwardly into the tube 66 15 and the contents of the tank be readily deter vat 5 .with the arm 84 thereof extending over the adjacent guide tracks i6 opposite the arm l6 for the valve l9, in the path of movement of a tray 15 mined without the necessity of removing the, l5 moving along said track. cover 21. - In operation the cleansing agent as an alkali g The outlet __of the passage 46 of the metering valve 31 is connected with the interior of the vat" 5 by means ofa pipe'or conduit 62 which extends downwardly through the upper wall of they case I through the rinsing chamber 3 at one side thereof and has the lower end extended through the vat 5 in communication with the interior thereof in 25 a plane preferably above the upper end of the over?ow pipe 20 and, therefore, above the-level of the washing‘ ?uid contained in the‘vat. Mounted in the‘ conduit 62 and positioned within the chamber 3 is an operating valve 65. 30 This valve is provided with a valve seat 66 ar cleaning material is placed in the supply tank 25 in a ‘liquid state or is mixed with a liquid as water so as to be in a liquid state and will ob 20 viously pass from the tank to the metering valve 31. This valve is maintained in a partial open position by the manipulation of the valve stem 42 depending upon the degree of discharge of the cleansing agent which “is wished to be main tained. The cleansing, agent passes from the metering valve 31 through the conduit 62 to the operating valve 65. This valve 65 is opened by the engagement of a tray 15 with the arm 84 each time a tray is moved into the. rinsing chamber 3 'so i and in’ the arrangement shown in the drawing‘ therethrough. A disk valve 68 is mounted in an - this valve 65 will be opened simultaneously with the opening of the control valve l9 ‘so that as upwardly projecting hollow boss 69 formed inte gral with the valve case for axial movement into , washing ?uid is supplied to‘ the tank 5 from and" out of engagement with the valve seat 66. .the spray nozzle 9 the cleansing agent will be The valve 68 is normally urgedvinto engagement supplied to the washing ?uid in the vat 5. As *with the seat 66 by a spring ‘I6 also mounted in v soon as the tray in the rinsing chamber is moved the boss 69 between a washer ‘H secured to the ~ outwardly therefrom beyond the valve arms l9 lower end of the valve stem 12 adjacent the valve and 84 the supply of fresh washing fluid and '40 68 and guide member 13 mounted at the upper cleansing agent to the vat 5 will be discontinued. It will thus be seen that I have produced a end of the boss 69. This guide 13 has the lower ranged in the passage 61 extending lengthwise . portion thereof provided with a stumng box 13' and is secured to the boss 69 by a cap 14 which is screw threaded at its lower end ‘to the boss 69 as 45 shown in Figure 6. The guide member ‘I! is simple, economically constructed mechanism whereby-a cleansing agent may be automatically ‘supplied to ,a washing, ?uid simultaneously with the replenishment of said washing ?uid with a. 45 maintained against rotation’ by a pin 15 mounted in the boss 69 and extending upwardly through fresh supply and that the quantity of the cleans ing agent may be readily controlled by the ma a slot provided in the member 13; The can 14 extends some distance above the boss 69 and has nipulation of metering valve 31 so as to produce and ‘maintain a washing ?uid having a given percentage of cleansing agent therein irrespective of any variation in the amount of washing ?uid 50 the upper end thereof‘ provided with a stu?lng box 11 through which the valve stem ‘I2 extends. The upper face of the guide member ‘I3 .is pro vided with a'pair of upwardly extending diamet rlcally opposed cam members ‘or teeth 19 as shown more clearly" in F1gurev'7 and which are adapted to be engaged by a‘ pair‘of correspond used. Although I have shown the valves l9 and 65 Q for. controlling the supply vof ‘rising water and the cleansing agent respectively to the vat 5 vmounted within the rinsing chamber 3 and as ingly constructed cam, faces or teeth 86 provided being manually manipulated simultaneously in on a cam collar 8| secured to the valve stem 12 this instance through the medium of the tray l5, adjacent the teeth 19 so that whenfthe valve 68 ‘ it is ‘to be understood that one or both of these 60 engages the valve seat 66 the teeth 86 will regis 60. valves may be mounted at any other convenient position either inside or outside of the rinsing ter in the spaces between the teeth 19. It will now be observed that the valve-68 may be raised chamber or of the case I and that they may be from the valve seat 66 by rotating the valve stem ' manually operated'simultaneously for adding a‘ ' 65 12 in either direction for bringing the cam teeth 86 into engagement with the teeth 19 and thereby produce an upward axial movement of the valve fresh supply of water and “a cleansing agent to » ' thevat by any suitable lever or linkage mecha 65 nism operatively connecting said valves. There fore, I do not wish to be limited to the exact stemand valve disk. In order that this rotary movement of the valve stem may be readily accomplished, the upper end thereof has secured thereto one end construction shown as various changes. may be readily made in the form, and-‘relation of the parts ofvthe device withoutdepariting from the 70 of a radially extending arm 64 which has se spirit of the invention as cured to the underside thereof a spring 86. This pended spring 85 extends downwardly in a vertical plane claims. forth in the ap ’ ' ' ' ' ' I claim: from the arm 94 when the cam teeth 88 are in a 1. In a , washing machine having a vat for I washing ?uid, a casing arranged over said vat 751 position intermediate the cam teeth "I9 and the _ I ~ ‘. \ : - , - 2,127,017 forming a washing chamber in communication therewith, track means for trays for the articles to be cleansed connected with the casing to ex tend through'the chamber over said vat and a washing apparatus connected with the casing for subjecting the articles in the trays to the action of the ?uid in said vat to wash said articles, said washing machine beingcharacterized by a rins ing apparatus ‘connected with the casing in 10 spaced ‘relation to the washing apparatus for sprinkling the articles with fresh- water and adding said water to the contents of the vat, said rinsing '~ apparatus including a spray nozzle mounted in said chamber and a valve mounted therewith, track means for trays for the articles to be cleansed connected with the casing to ex tend through the chamber over said vat and’ a I washing apparatus connected with the casing for subjecting the articles in the trays to the action of the ?uid in said vat to wash said articles, said washing machine being characterized by a rins- ' ing apparatus connected with the casing in spaced relation to the washing apparatus for sprinkling the articles with fresh water and add 10 ing said water to the contents of the vat, said rinsing apparatus including a spray nozzle mounted in said chamber and a valve mounted adjacent the track, a supply tank for a cleansing 15 adjacent the ‘track, a supply tank for a'cleansing ' solution, a conduit connecting the tank with the 15 solution, a conduit connecting the tank with the - vat, an operating valve in said conduit positioned adjacent the track independently of the ?rst mentioned valve, separate operating means for '20 each valve, each of said operating means being - arranged to extend into the path of a tray'in its ,, movement‘ along said track' to be directly en'- ' gagedby said tray for'simultaneously‘ opening 25 vat, an operating valve in said conduit positioned adjacent the track independently or the ?rst mentioned valve, separate operating means for each valve, each of said operating means being arranged to extend into the path of a tray in its 20 movement along said track to be directly engaged by said tray for simultaneously opening said valves andmaintaining the valves in the open saidfvalves and maintaining the valves in the position during the passage of the tray beneath open position during the passage of the tray be the spray nozzle, and a metering device for the neath the spray nozzle,v and a metering device cleansing solution mounted in said c'ondult,'in 25 for the cleansing solution mounted in said con duit. ' ' ,. - 2.4 in a dish washing machine having a vat for washing fluid, a casingarranged over said vat forming a washing, chamber in communication eluding a body member’ having a valve seat, a valve movable toward and from said seat, and operating means connected with the valve where- ‘ by said valve may be manually adjusted. , 30 - = .- R. WALKER.