US2023107A - Washing machine - Google Patents

Description

r De 3, 1935- E:.'s sToDDARD y 2,023,107

WASHING MACHINE Filed Maron 19. 1928 5 sheets-sheet' 1 l De@n s, 193s.

. s. sTODDARD 2,023,107I` WASHING MACHINE Filed March 19 1955 :s sneetsfsneet 2 Il "M f5 @am Waard @66. 3, 1935. l` E, s STQDDARD 2,023,107

WASHING MACHINE Filed March 19, 1928 5 Sheets-Sheet 5 Ratented 3, ,1935

UNITED STATES 2,023,101 WASHING MACHINE Edgar S. Stoddard, Berwyn, Ill., assigner to The Conover Company, Chicago, Ill., a corporation.

oflllinois Application March 19, 192s, serial No. 262,652 schim. (ol. 141-9) This invention relates to improvements in washing machines, especially to dishwashing machines of the portable type.

Much diiiiculty has been experienced with i5 washing machines and especially with dishwashing machines of the portable type in adding the wash and rinse liquid thereto. In most machines it has been necessary ,to stop the machine if it is in operation and remove the cover. During the l rinsing operation it was necessary toA repeat the operation of stopping the machine, removing the cover, adding the rinsing liquid, replacing the 'cover and starting the machine several times to rinse the interior of the machine and the dishes l therein. The' rinsing, in many cases, was very dimcult and had to berepeated many times due to the presence of many crevices and recesses in thev machine in which dirtA and grease could collect.

, The amount of water placed in the machine could only be roughly estimated and the desired xed operating level was usually not maintained. In addition there was -no adequate provision made for removing the' waste wash or rinse.

25 liquids from the interior of vthe machine.

An object of this invention-is to provide a Washing machine to which can be added wash and rinse liquids'and from which waste liquids can be removed in a very convenient manner with- 30 out removal of the cover and without stopping the machine.

Another object' of this invention is tmprovide a domestic washing machine which can be readily -moved about and which is adapted to co- 35 operatewith an ordinary householdY sink'in obtaining a supply of wash and rinsing liquids and in discharging its waste liquids. Y

' A'further object of this invention is to provide a washing machine, the liquid level of which canl course of the following speciilcation, among the 50 more important ones oi' which are to provide a -self-cleaning machine, to provide an improved manner of attachment of the'legs, the hinges and other elements to the sides of the tank and to provide an improved hinge connection between 55 the cover and the tank.

l Although this invention is broadluy directed to improvements in connection with all dishwashing machines, it is especially directed to improvements to be used in connection with the centrifugal spray projector-type .of washing machines, 5 which are more fully described and shown in the copending application, Serial Number 353,841

iiled January24, 1920, now Patent No. 1,679,465, and my copending application Serial lid-193,414, now Patent No. 1,943,636. The vfunctioning oi' this type of machine depends uponthe operation oi' a small unencased screw-like impeller,` with spiral blades, which impeller rotates at a high velocity oi the order oi 1,000 to 2,000 R. P. M. in the lower part of the tank of the machine. Only the lower part of this impeller is immersed in the shallow liquid lpool in the lower part of the tank. The shallow liquid pool in the lower part of the machine is maintained in relatlveley quiescent condition during the operation of the machine. As it turns, the impeller elevates/ the liquid from its lower spiral screw portions to its upper concavoy projectors which throw the cleansing liquid at a tremendous velocity'directly upon, or into, the 25 objects to be cleansed. Since there are no'bafes or deflectors to break the force of the liquid, the .total force o1' the projected mass of liquid is e'ective for cleansing purposes. Although'thevelocity of the cleansing liquid is very high, the volume ofV cleansing liquid is very small, and as a result a very eective cleansing is obtained with a and most edicient use of soap and water. The projected mass of liquid at the same time keeps the interior of the tank of the machine clean and causes all the food particlesand other solid matter to collect at the bottom of the casing from whence they can be readily removed. In theoperation oisthis unencased impeller, it is important that only the lower portion of the impeller'be immersed in water, since if the impeller be totally immersed, it will not result in an emcient cleansing action.- In view of the i'act that `the dishes and other objects are kept out,of contact with the body of liquid contained in the bottom of the tank, and the cleansing is solely due to contact with the projectedmass oi'liquid, it

y.is limportant that the proper ,operating condi` tions Vbe maintained for producing such a cleansing action. 50

The following drawings illustrate one embodi- `ment of the invention as applied to th centrifurestricted.

Figure 1 represents a vertical sectional view of the washing machine upon the line of Figure 2;

Figure 2 represents a sectional top view of the lower part of the, tank of the washing machine with the basket removed upon the line 2-2 of Figure 1;

l Figure 3 represents a fragmentary vertical side view showing the inlet and outlet connections of the machine upon the line 3-8 of Figure 2;

Figure 4 represents an enlarged sectional view of the upper part of the level indicating column shown in Figure 1;'

Figures 5 and 6 represent sectional views upon the lines 6-5 of Figure 2, and 6-8 of Figure 5, respectively, an'd they show the construction of the pump well and chambers in greater detail;

Figure 'I represents a vertical sectionalview and shows a modified centering connection between the motor and the tank portion;

Figure 8 represents a view upon the line 8-8 of Figure 1 and shows the hinge arrangement of the lid when the lid is raised to vertical position; and

Figures 9, 1o and 11 are detail views showingthe character of the brackets which are used for attachment of the various the tank.

.In Figure 1 the washing machine is composed of a vertical cylindrical tank 2| which is provided with a cover 22 and three symmetrically positioned legs 28 which ride upon the rollers 24 soy that the washing 'machinecan be readily moved bottom 21 which may take 'the shape of an vinverted frustrated cone. The rim of the removed .apexial portion of said frustrated conical bottom 21 is attened as indicated at 28 (see especially Figure5); The tank of the machine can also be square, rectangular or polygonal in horizontal cross section. The bottom can be caused to drain to one side of the tank if desired.` In case it is desired to be able to move the dish racks into thetank of the machine from the side, the impeller can be placed adjacent to the side or corner removed from the entrance.

The flattened rim 28 (see Figure 5) is adapted to be joined to a journal casting 80 by the screws 3| which are positioned at equal intervals around said flattened rim. The contacting edge 82 of the castingv 30 is bevelled and between the flattened rim 28 and the bevelled edge 32 is clamped the circular rubber washer 33. This will insure a water-proof joint between the journal casting 30 and the body of the tank 2| since the bevelled edge 32 will compress the rubber washer along one line around the edge of the rim giving a perfect contact over the entire joint.

The casting 3D contains an upper chamber 4|, (see Figure 5) va lower chamber 42, a bearing member 43 and a lower flange 44 for attachment with the motor. The upper chamber 4| (see Figure l) is provided with a tubular projection 58 horizontal swaying arm which is adapted to extend away from the tank 2| so as to cooperate with the faucets or basin voi! a domestic household sink as shown upon Figure 3 and which is partsto the bodyf also adapted to be placed over the cover 22 of the tank 2| when the machine is not being utilized as shown in Figure l.v The main conduit 51 is also partly contained in vertical tubing which extends up along the side of the tank (see Fig- 5 ure 3). .Adjacent to the bottom of the tank the conduit 51 can be continued vinto either one of two conduits, a conduit 58 leading directly into the side of the tank slightly above the dished bottom 21 and another conduit 68 which leads into a 1 well in the bottom of tank and cooperates with the projection 6|.

The main conduit is constituted in the following manner: The funnel 6|), which is preferably a casting, (see Figures 1 and 3) is adapted to co- 1 operate with an ordinary household sink. It can be turned upwardly, as indicated, so as to receive the ow of liquid from a spigot or faucet y.or it can be turned downwardly .to permit disthe tank into the household sink. Attached to y the funnel 68 is the horizontal tube 6| to which -is attached the fiber handle 62 which may also be made of hard rubber, Bakelite" or any other heat insulating material. The handle 62 is iltted 2 overa knurled or roughened portion of the tubing 6|. To the end of the tube 8| is attached the nut 88 which is provided th a hollow portion 64 for containing suitable s umng material. The

`charge of the waste liquid from the interior of 20 tube 6| fits over and slides upon an inner tube 30 which is provided with a collar 66, which may be adjusted in different positions upon the tube 66 bymeans of a set screw 61. The tube 65 is rigidly set into the elbow 68. The tube 6| is adapted to ride back and forth so as to increase 8 or decrease the distance between the funnel 60 and the elbow 68. The amount of friction between the tube 65 and the tube 8| can be regulated by screwing or unscrewing the nut 63 which will compress or lessen the compression upon the 4 stuiling material in the recess 64. If it is desired A to have a ilxed length between the funnel 60 and the elbow 68 the length of the tube between 60 and 68 may be adjusted by loosening the set screw 61, and byA moving the collar 66 along the tube 4 65 until it rests against the nut 63. 'I'he set screw 61 is again tightened and the distance between 68 and 66 will then be set so that the funnel may cooperate with a domestic or household sink in the desired manner. When it is 5 desired to turn the funnel 60 so that it will discharge downwardly into the basin of the sink, such may be done by means of the handle 62. The tube 6| and the nut 68 can be turned in this manner without affecting the adjustments or the 5 predetermined length between the funnel 6U and the elbow 68.

The downwardly extending portion of the elbow68 is rigidly attached 'to a vertical' tube G9 which is provided with a collar 10 which can be 60 elbow 68 can be turned at any desired angle since the tube 69 will readily turn within the tube 12. c'I'he length of the tube69 above the nut 13 can also be readily regulated by loosening the set screw 1|, elevating or lowering the` elbow 68, moving the collar v1li to its new position so it will rest against the nut 13 and again tightening the 75 Conduit 51 and the conduit 58.

set screw 1|. Ihe tube 12 passes through the bracket 15 which is attached to thev side `of the tank. I'he tube 12 leads to the three-way valve 11. When wash or rinse water is being admitted to the tank the three-way valve 11 may be so adjusted as to close the connection between the conduits 51 and 59 and' open the connection betweenthe conduit 51 and the conduit 58. When waste liquid is being removed from the tank the three-way valve 11 may be so adjusted that it will open the passage between the conduit 59 and the .conduit 51 and close the passage between the The valve 11 is attached to the side of the tank by means of the nut 10, the enlarged portion of which is positioned within the interior of the tank I The two rubber washers 19 are iirmly clamped between the three-way valve 11 and the nut 19. The conduit 59 is contained in a vertical tube 92. an elbow 83 and a slanting tube 04 which latterflts into the tubular projecting hollow portion 5| which communicates with the lower chamber of the casting 30.

If the wash and rinse water is run into the.

machine while the water propelling or circulating device is not in operation, the conduit 50 may be cut out entirely and the combined conduits 51 and 59 utilized both for conducting the wash and rinse water into the bottom of the tank below the water actuating device and for conducting the4 extends up along the side of the tank 2|. To the upper part of the tube 93 is attached the gauge 'bottom 94. each side of which is bored so as to form the chambers 95 and 96. Through the center ofl the member 94 is drilleda holebetween the cup-shaped openings 95 and 96 through which is passed, and to which is soldered, a pressure tubeu |00. This pressure tube extends downwardly into the tube 93 and terminates in a pressure bell |0| which is positioned in the lower part of the column 90 so that it will be partly submerged. The gauge bottom 94 maybe set in a fixed position uponthe tube 93 by means of the tube |00 is bent over as indicated at |03 and then extends upwardly into the reservoir chamber 96. The cylindrical portion of the reservoir chamber 96 is provided with an indicating line |04.

yThe upper portion of gauge bottom 94 is threaded and the gauge top is screwed upon Iit. 'Ihe rubber washerA |06 insures an air-tight fit between the gauge top |05 and the gauge botber |01. The conical portion of this indicating chamber |01 is provided with the gauge line |08. In the lower portion of-the gauge |05 is drilled a hole in which'is inserted the tube |09.which is soldered to the gauge top |05. The tube |09 extends downwardly and under the surface of the indicating liquid in the reservoir 96. The top of the gaug'e chamber is covered by a piece of celluloid or other transparent material I0. 'Ihe pressure tube |03 need not be bent as'shown. The tube may be straight, if it is set loff center in the gauge bottom 94 or if the tube |09is either bent off Vcenter in the reservoir chamber 96 or set oi center if* the gauge top |05.

set screw |02. The upper portion of the pressure f torn 94. The upper part of the gauge is drilled.`

'out and count'ersunk so as to forni a gauge cham- The column 90 is connected to the upper chamber of the casting 30 so that any change of level in the tank is readily communicated to the gauge 94. The column 90 is ordinarily fl'lled with water up to the level of the liquid in the washing cham- 5 ber of the tank This water will trap a column of air in the pressure bell |0| and in the pressure tube |00. As the liquid level in the tank rises the air which has been trapped in the bell |0| and in the tube |00 will be forced upwardly into the reservoir chamber 96. The indicating liquid in the reservoir chamber 96 will then be forced up through the tube |09 into the gauge chamber |01. When the liquid-reaches the line |08 the proper level inside the tank will have been reached. l

The indicating liquid which ls used should have a higher specific gravity than water and a much higher boiling point than water so that it will not readily evaporate. ,The indicating liquid must indicate the level of both hot water and cold water and the liquid must function practically the same without substantial expansion or evaporation'A between the temperatures of about 60 F. and 212 F. The liquid should have 25 a higher specific gravity than water for the reason that. slight changes in the specific gravity of the liquid in the tank-||| should not materially change the rise in the level of the indicating liquid. There is frequently a layer of suds upon the top of the water in the lower part of the column 90, that is in the elbow 92 or in the tube 93. This layer of suds is liable to materially affect the `level of the liquid in the gauge chamber |01 unless a liquid of higher 35 speciilc gravity than water is used. In this l-atter case the effect will be very small and may be neglected. As a general rule it is preferred to use liquids which are colored, or colorless lquidsin which dyes can be readily dissolved, which@ are odorless, which have a higher 'boiling point f than water, and which also h-ave a substantial? ly higher specic gravity. The liquids utilizedhI should also be of low viscosity so that they will readily move in tubes of small diameter with slight changes in pressure. Alcohols, especiallyl the polyhydric alcohols such` as ethylene glycol have been found useful for this purpose. Some alcohols may have to be slightly diluted with water to reduce their viscosity, but the amount of water should be kept down so that there will not be any material increase in the vapor pressure of the indicating liquid. The reservoir chamber should be protected from the heat of the wash and rinse liquids in the washing chamber so yas to prevent excessive changes in temperature. -The exterior of the gauge bottom 94 is glass-enamelled or surfaced with a reflecting material and is-separated from the wall of the tank 2| by an air gap. The reservoir bottom 60 is also insulated from 'the hot water in the bottom of the column 90by the air columns inside of the tubes 93 and |00. l v

To adjust the column so that the level of th indicating liquid will be exactly at the line |08 05 when the tankcontains six quarts of water the followingprocedure may be adopted. Six quarts of `water are put into the machine'which should Y be previously emptied of liquid. Six quarts of ywater will just ll the bottom of the machine including the two chambers in the cup-shaped part of the journal casting 30, and the frustrated conical bottom with communicating pipes 'and tubes up tothe desired level. This will immerse the elevating portion of the water actuat- 76 Cil ing member. The normal level will just be at the point where the frusto conical bottom 21 joins the cylindrical sides of the tanky 2|. The reservoir Achamber 96 of'the gauge' is then filled with the liquid up' to the line |04. The gauge top |05 including the gauge chamber |01 is then screwed on to the threaded portion at the top of the reservoirchambet 94 with the rubber washer |06 in place. The combined gauge top and bottom 94 is then moved along the tube 03 until the level of 'liquid in the gauge chamber |01 is at the line |08. The set screw |02 is then tightened so that the combined gauge top and bottom will be held in fixed position upon the tube 93. The pressure in the upper part of the tube 93 in the upper portion of the chamber |01 is maintained at atmospheric pressure by means of the openings and ||2 respectively. The linterior of the chamber |01` -is preferably coated with alayer of white Duco" or is nickel plated so that the color of the indieating liquid, which is preferably red, will be strongly contrasted against it.

It will be noted that the gauge is so arranged tuates another liquid column, which forms a.

manometer with a broken column in which liquid willfnot be lost when inverted or syphoned out when the tank is drained. When the tank 2| is drainedy the liquid in the lower part ofthe column 90 will also be drained.

The tubular member 43 (see Figures 1 and 5) in the Aparticular embodiment of the invention shown contains the bearing for the driving shaft |20 of the Water impelling member in the lower part of the tank 2|... Thewater impelling member `consists of a cylindrical shell |2| to the upper exterior-of which are attached the circular inclined blades |22 Awhich terminate in enlarged concavo centrifugal spray-projectors |23. YThe upper part of the shell |-2| (see especially Figure 5) is' weldedto the nut |24 which is screwed" upon the upper part of the shaft |20. 'I'he nut |24 is screwed down to and rests upon a nut |26 which-is also screwed upon the top of the shaft |20 and rests upon`a shoulder thereupon. Upon the top of this shaft isscrewed a greasecup |21 which has a knurled cap |28 by means of which ther pressure upon the grease can be regulated..

A conduit |29 leads from the grease compartment within the cup to the upper bearing |30. The upper bearing |30jconsists of a bearing nut which is screwed into the top of the tubular portion 43 of the casting 30. The bearing |30is separated from the nut |26 by a fibre Washer |32. The impeller shaft and the motor shaft are operatively connected by means of a hollow eylindrical coupling shell provided with interiorly flattened portionsfwhich engage corresponding flattened portions or recesses on the ends of the impeller 'or motor shafts. The shaft |20 is connected to the shaft |33 of the motor |34 by means of the insulating coupling |35. The space be-V tween the end of theshaft |20 and the end of device |65.

the shaft |33 is filled with a rubber disk cemented in place so that no water can complete the circuit between the shafts. 'I'he insulating coupling |35 drives the impeller by means of the flattened portions |31 (shown more fully ony Figure '1). s4

tween the upper bearing |30 and the lower bear- 15- ing |35is positioned felt or other absorbent material soaked with grease to avoid the necessity of frequent oiling. The gap between the ends of the shafts |20 and |33 is closed by a cylindrical piece of rubber cemented therein so as to pre- 20 vent shortl circuiting due. to collection of electrolyte in .such gap.

The motor is centered in the following manner (see Figures 1 and 5). The motor issupported partially bya spider |50 which has three supporting arms 5| which are attached to the three legs 23 which support the tank. The

`spider arms |5| are attached to the, legs by means of the`machine screws |52. The ends of the legs |5| are separated from the legs supporting the tank'by the lead washers |53. The lower part of the casting 30 has a-flange 44 which is provided with the circular shoulder 45. 'I'he upper part 'of' the motor casing is similarly shouldered as indicated at |54 and these two shoulders are adapted to cooperate and hold the motor shaft firmly centered in respect to the impeller shaft |20.r The flange 44 is provided with a series of symmetrically arranged holes through which bolts |56 may be passed. These bolts 40 screw into suitable openings in the end bell of the motor |34. These bolts V| l56 will pass through the spider |50 and firmly clamp the spider between the. ange 44 and the motor |34. The bolts |56 are insulated from the journal casting 45 30 by means of the fiber washers |51, the flber.' annular ring |58 and the vertical fiber ring |58 which latter rests between the cooperating shoulders '45 and |54. In addition .there is a fiber sleeve |60 which ilts over the portion ofthe 50 bolt which passes through the ange 44.

The lower part of the impeller shell |2| (see Figures 1, 5 and 6) is provided with a centrifugal This centrifugal device is adapted to' turn ina lower chamber 42 of the casting 30. 55 The centrifugal member consists of a brass strip |66 the ends of which are widened asindicated at |61 (see especially Figure 1). This brass strip is bent (see Figure 6) so that it can be adjusted to give it a suitable" amount of centrifugal force to remove the liquids ufrom the tank 2|. The brass strip |66 has a central portion which parvtiallyembraces the shell |2| of the impeller and around the other side of the shell or impeller is a cooperating strip 10 which is bolted to the main 65 strip-at |1|. This brass strip is preferably separated from the impeller sleeve or shell by a lead strip |12 which fits adjacent to, and around, the lower part of the impeller sleeve or shell |2|.v The lead strip prevents cracking of the glass enamel. The lower part of the impeller shell at diametrically opposite points is provided with driving buttons |13 over which the lead strips iit thus causing slight elevations in the lead strip. The centrifugal pump member |65 is po- 7| cause it to rotate therewith.v The centrifugal device |65 is held in position by means of the lower :dared edge |16 of the impeller sleeve or shell I 2l andfour buttons |11 which areV symmetrically positioned around the impeller shell just above the positionkof 4the lead andbrass strips. l

The lower chamber 42 of thejournal casting 30 in which the centrifugaldevice |65 rotates is separated from the upper chamber-4| bymeahs of the plate |80. The plate rests upon the shbulder |8| in the wall of Iupwardly facing cup of the journal casting and is held in position and' kept from turning by means of the set screws |83 which fit into the beveled recesses |82. The plate |80 has a large central opening which per- -mitspassage of liquids between the chambers 4| and 42. Cast integrally with this plate and projecting upwardly therefrom is the vertical cylindrical plate v|84 (see Figures 5 and 6) to which is attached a sloping horizontal plate (see Figure 5). These plates are adjacent to the side'of the chamber 4| and the lower part of the frustrated conical l.portion 21 of the tank 2| and are positioned so that they will form pockets in conjunction withthel side of chamber 4| and the bottom ofthe tank 21. The impeller usually is intendedl to turn clock-wise if one looks down- Wardly thereupon. The impeller forces an amount of water into the open space between the plates |84 and |85v and the walls 4| and 82. This. water will increase the level indication inthe gauge 89 so that it is possibleA to calibrate and operate the gauge 88 when the impeller is in motion. It is obvious, of course, .that when a machine is operating a certain amount of water will Vhave been elevated and will be in the form yof a spray in the open body of the machine or it may be hanging as droplets on the side of the various racks and articles above the water level on the interior of the tank 2|. This will obviously decrease the amount of water which is contained in the frustrated conicalbottom 21 and the chambers 4| and 42 'of the journal casting 80. In order to get the vcorrect six quart level both when the actuating device is in motion and when the machine is operating it is necessary to pos ition some means such as that shown to increase the level which will be indicatedby the gauge 80.v As can be seen fromFigure 6 the por tion of the plate |84 which is adapted to rest adjacent to the side of the chamber 4| forces an additional amount of liquidinto the column 80: A certain amount of liquid, of course,'will pass between the closely adjacent edges of the plate |84 and the side of the chamber 4|. This amount .of leakage can be increased by cutting grooves in the portion of the plate |84 which is closely adjacent to the side o1' the chamber 4| or it can b'e .restricted by attaching aplate of sheet copper |88 (see Figure 6) on the rear side of the plate |84 which will closely cont ict with the wall of the chamber 4|. By makina adjustments of this character it is possible to obtain a correct indication of the amount of. water in the tank while the impelleris in operation. In preferred construction it may be desirable to omit aoaaiog the plates |84 :and 'l Illsince they tend to accumulate dirt and food particles and they are not essential if the gauge is not to be operativ when the impeller is in motion. i

The top of the impeller shell will beelevated 5 above the normal water level. There will' be very little tendency for water leakage to take place past Vthe bearings of the4 shaft |20 under normal conditions. It will be noted that the impeller shell |2| forms an apron-like sleeve over 10 the top ofthe tubular bearing member 43 so that an air pocket is formedl between the impeller shell and-the tubular bearing.

The outside diameter of the journal member 43 (see Figure 5) is caused to increase as such 15 journal member 43 approaches the lower portion of the impeller shell ,|2|. The impeller shell is made substantially cylindrical with the same .interior diameter from top to bottom. As a result there will be a much smaller annular space ao |81 between the impeller shell |2| vand the tubular bearing member 43 at the lower part of the impeller shell than there will be adjacent to the upper part of the impeller shell. The airtrapped in this annular space inside of the impeller shell 25 further reduces the leakage. 'I'he air which is trapped in this annular space will be prevented from leaking Athrough 'the bearing |80 by the lubricant contained in such bearing and it will be prevented from leaking past the nut |24 adjacent su tothe grease cup attachment by means of the compressible washer |8| which is betweenthe grease cup |21 and thetop of the impeller sleeve Figure 7 shows a modification of the connec- $5 tions between the supporting spider, the motor and the casting 84 adapted to overcome insulating diillculties. In the arrangement shownin Figure 5 it has been found that it is sometime possible for water to leakdown upon 40 the upper part of the flange 44 and to connect electrically the bolts |55 to the casting 30. The bolts |56 are attached to the end bell of the motor. It is very possible for an eleetricalcharge to get into the body of the machine from the mo- 45 tox and to shock the user thereof.` In Figure 7 the ports of the flange 44 through which vthe'bolts |58 are passed are providedwith the bosses |90 so that the water will readily drain away from the top of the iiangefwithout causing electrical con- 50 nection between the bolts |56 and the journal. casting 80. In the portion of the journal casting which surrounds the depending part |82/ on the .journal member 48 (see Figures 1, 5 andi!) there are a series of openings |84 -so as to ventilata and 55 make access possible to the space therein. The channel |88 (see Figures 5 and '1) in the endbell of the motor |8 4 isdrainad to 'the exterior by drain hole 'or slot |88 sov that no. water accumulates to ground the motor on the tank.

The lowest-part of the lower chamber 42 of th journal casting 20 -is provided with a tapped pro'# jection |88 (see Figure 1). Into .this tapped pr-f jection is screwed a downwardly projecting tube |88 'to the end of which is attached the pet cock 55 |81. In case it is desired `to drain thefpump chamber of all lihid such pet cock may be' opened and the small amount of liquid left in the chamber 42, after the centrifugal pump has substantially exhausted the liquid from the interior ofg'mv4 Figures 1 and 8 show details oi the improved lid, the air vent therein and the means of hinging the lid to the body of the machine. The lid is provided with a handle which is opposite and beyond the center from the back leg of the machine. The

position of the handle is approximately shown on Figure 3. To the back portion or the lid adjacent -to the air vent therein is attached a bracket 200 T-shaped! piece 202 which is adapted to slide up and down in the slot 204 of the slotted member 203 (see Figures 1 and 8). The slot 204 is of sufflcient width to permit the rod 20| to slide freely. Between the slotted member 203 and the rear leg, forming a back of the slotted member is a backing strip of`sheet metal 206 which terminates in an external hook for use in supporting the motor cord when the machine is not connected to van electrical outlet. The slotted member and the backing strip 205 are attached to the 'rear leg of the machine as by the two machine screws 205.

Figure 1 shows the position of the rod 20| when y the lid is covering the machine. Figure 8 shows the position of the rod 20| when the lid has been moved 90 from the .position in Figure 1. It will be noted that the T-portion 202 has raised a slight bit during this movement so that it is adjacent to the top of the slot 204. During the next 90 of movement the moving T portion 2'02 will slide down in the slot 204 until the.,lid reaches a horizontal pomtion extending outwardly from the tank 2|. At such time the T portion will be supported at the bottom of the slot. The curvature of the rod 20| is such that the danger of squeez-4 ing 'the operators ilngers is minimized and the maximum strength oi' the rod will be utilized. 'I'he back edge of the cover is hinged to the top of the #tank as indicated at 2|0.

The cover 22 (see Figure l) is made smooth 'and it isprovided in the preferred form' with a central opening 2| i, the edges 2I2 of whichare bent downwardly. Below the opening 2 is placed as sort of a baille separator. lIt will be noted that the lower horizontal portion ot the depending well 2|4 slopes inwardly and downwardly so that any moisture separated by the dome 2|3 can readily drain back into the body o1' the tank through the.-

tical portion oi the tank 2| and assist the sealing action. The rubber gasket 2|0 is iitted around the cylindrical portion2ll.' When the impeller is in operation thelid. 22 is clamped to the tank in such a manner that the rubber ring 2|5 will be compressed. This will produce a very eiiective moisture tight vjoint between the lid and the body of the tank.

The electrical connection to the motor may be actuated by the switch 225 (see Figure 8) which is placed adjacent to the rear top of the tank. 5 This switch is held in a hook shaped member 226 which is attached to the body of the tank by the upper machine screw 20,5. The cable 221 leads down along the side of the tank to the motor |34.

The legs 23 (see'Figuresl and 2) and the 10 bracket 15 (see Figure 3) are attached to the side of the tank by the brackets 230. These brackets are shown in greater detail in Figures 9, 1Q and l1. The brackets are made of one piece of metal which has two ilat portions 23| 15 which are adapted to be attached to the side of the tank 2| preferably by welding. T'he bracket also has a rebent portion 232 which is slotted as indicated at 233. This rebent portion forms a sort oi@ receptacle which is adapted to 20 guide the nut 234. The position of the nut 234 may be adjusted through the slot 233 so that it will come opposite the opening for the bolt 236. The bolt 236 will also pass through the member, as for example the leg 23, which it is ,desired 25 to attach to the body of the tank. In this manner a very rm and rigid connection between the leg and other members of the tank is obtained without holes in the body of the tank, thus further insuring against leakage past any openings 30 due to the presence of loosened bolts. The upper rack structure250 and the lower rack structure 25| are shown in vertical sectionin Figure l. The rack construction is more fully shown and described in a copending application. 'I'he up- 35 per rack structure is madein two parts; an interior portion 252 and an exterior portion 253. The interior portion 252 hangs upon the inner edge of the exterior portion. The exterior portion 253 is suspended from the upper strengthen- 40 ing groove 25. The upper rack is designed to hold the cups, glasses and deep vessels which are usually placed. thereon with their basin portions downward. `It will be noted that the basin portions oi these articles will face towadthe imi5 .peller to a greater or less degree so that the cleansing spray will strike them in a most effective manner. In the case of such vessels it is preferred that their basin portions be turned toward the cleansing projected stream in such a EO manner that the stream will strike the center i inside bottom oi the basin portion perpendicularly and then will be thrown out toward the `sides of the basin portion. The outer portions of these 'objects which are more readily cleansed 55 will be struck bythe returning spray. The

. center portion of the upper rack 252 or the'fcomplete upper rack can be removed or placed in the cover 22 when the same is turned back in inverted horizontal position. The dishes can C0 be conveniently placed in such a rack whileit is positioned in such cover and moreover ii the dishes have been washed and rinsed with hot water they can be placed in such inverted cover for drying purposes without removal from the C5 rack. The inner upper rack 252 can be removed without moving the outer upper rack 253 -and in this manner ready access can be had to the lowerrack 25| and to the bottom of the tank.

. The lower` ra'ck 25| may be supported upon the 70 bottom of the tank by the four symmetrically positioned legs 250 or/and the impeller guard memf ber 210. Preferably the lower rack is supported on the impeller guard 210 Aalone when in place in the machine. The legs are attached primarily 75 for supporting the rack when it is outside of the tank so as to lprevent any downwardly projecting portions of the dishes from being chipped and otherwise marred. These legs also form a convenient means of supporting the rack on uneven surfaces such as fluted drain boards. Three legs or any other number may be utilized. The lower rack contains a special perforated sheet metal holder 26| which is positioned insuch a manner thatknives, forks and spoons will receive 'the full effect of the cleansing spray. The height .of the holder 26| is such that those portions of the knives, forks and spoons which come into contact with the food will' be exposed to the direct action of the water without interference by the supporting screens. A series of lwire holders are arranged in said lower rack so as to provide a holder for the dishes which were not placed in the upper rack.4 The impeller turns clockwise looking down and the concavo portion of the dishes arey placed so that they will face the spray which is hurled or projected by such rapidly rotating impeller. The backs of the plates which are more readily cleansed will receive the returning spray and streams or droplets of water. This lower rack is provided with handles 266.. which enable it to be readily removed from the tank.

In the lower part of the tank is an impeller guard (see Figures 1 and 2) which is provided with three outwardly projecting wires 21 I ,oneof which is shown in Figure 1. These projecting wires 21| are supported at their extremities on the bottom of the tank adjacent to the jointure of the dished bottom 21and cylindrical walls of the tank 2 I. They are also positioned on the dished bottom of the tank adjacent to the impeller by a rightangular and U-bend portion 214. The length of the wires 21| is such` that the wires will always be in tight contact with the tank at their extremities so as to position the impeller guard 210 and the vertical plate 212 in their proper positions. To each one of these projecting members is attached an laluminum plate or a plate of an enamelled sheet metal or some other non-corrodible ly prevent whirling movement of the water con tained in the f rusto-'conicall portion 21 of the tank 2| and will maintain the poolin a relatively quiescent condition. These plates are attached to the projecting arms 21 in such a manner that their smooth surface will face away from the direction of rotation of lthe water while their irregular inner portions will face toward the direction of rotationof the water so that they will be automatically cleansed. If desired more or less than three symmetrically positioned plates 212 can be utilized, but three plates are preferred. In the embodiment shown, the plates 212 are attached to the wires 21| by the folding ears 215. The plates 212 may also be attached tothe wires 21| by welding. The center portion of the guard 210 consists of a protective cage. The protective cage is formed of a series of concentric wire rings 211 welded to the vertical and horizontal portions 219 of the main wires 21| adjacent to' the impeller. The main wires 21| terminate at, and are welded to, a heavy wire ring 218 which is above the impeller shaft. The protective cage will prevent the dishes` and the hands fromcoming in left open asy indicated so that ready access will be had to the grease cup |21 without removing the guardv conduit 58.

11 is turned so that the passages 59 and 51 will bek In the preferred form both the interior and exterior of the lid and tank body are coated with glass enamel preferably white in color, so that the amount of heat ltransference therethrough will be reduced to a minimum. The use of glass 5 enamel will give a much better appearance to the machine and will also enable the machine to be much more readily cleansed. 4It will be noted that the interior of the tank contains practically no crevices or recesses into which dirt can collect 10 which are not subjected to the cleansing action of the spray projected by the impeller. The use of a smooth inner coating of glass enamel will greatly increase the self-cleansing properties of the machine. It will be noted that there is-nothl5 ing over the water impeller in the center of the machine to interfere with the direct action between the projected vspray and the articles upon the upper rack.

The machine is operated in the following man- 20..

ner: The dishes and articles to be cleansed are placed in the upper and lower racks and the racks are then placed in the machine with the upper rack supported on the horizontally inverted cover. If desired the. lower rack can be loaded in 25 place in the machine. AAfter the loaded racks are placed in the tank the cover is closed and clamped in place. Before the cover is closed a tablespoon full of soap flakes is preferably placed in the tank of the machine. If ordinary water is being used 30 it is best to place a teaspoon full or a suilicient quantity of a water softener, say tri-sodium phosphate, in the funnel 60 of the swinging arm containing the conduit 51. It is assumed that this arm has already been adjusted so it will be of 35 the proper height andl length to cooperate with the faucet of the sink. The funnel is then rotated so that it will face upwardly, if it is not already in this position, and it is placed under the spigot of the sink. The three-way cock 11 is then manip- 4,0 ulated so that the conduit 51 will open into the If the impeller is not in operation the conduit 51 may be allowed to open into the conduit 59. Hot water is then run from the faucet into the funnel until lthe level o f the red 45 indicating liquid in the gauge reaches the line |08, which shows that the proper amount of liquid has been received in the machine. The supply of water is then turned oil, the switch 225 is actuated so as to initiate rotation of the impeller and the 50 l .dishes are allowed to wash for about five minutes or longer depending on the conddition, of the dishes. The funnel 60 on the swinging arm containing Vthe conduit 51 is then rotated so that it will face downwardly and the three-way valve 50 11 is moved so that it will connect the passage 59 with the passage 51. Since the motor is still running the\ centrifugal device |65 will exhaust substantially all of the waste liquid from the tank. The three way valve is then turned so as to connect the passages 51 and 58. After placing a teaspoon full or a sulcient quantity of water soft-y ener, to prevent the dishes and apparatus from being coated with lime soaps, in the funnel 60 i the rst rinse water is allowed to run into the 65 tank until the indicating columnl shows that the proper amount has been received. The machin. is then allowed to operate for a minute,'. the finnel is then turned downwardly and the cock 0 in communication. The waste rinse water will then be exhausted to the sink. 'I'he machine may then again be rinsed in a simllarmanner by preferably using clear hotwater without the softener z to'decrease tendency of spotting due to a lessened 75 amount of solids in solution in the waf ter. After exhausting the second rinse the cover oi the machine is removed and the upper rack of hot dishes is lifted from the machine and placed in the open cover to hasten drying. .In case too much soap is` put in the machine the suds will become so thick it will be diillcult to pump out. In such a case additional water is allowed to enter the machine so as to dilute the suds and enable them to be removed.

What is claimed is:

1. In a washing machine, a tank, a tubular bearing member extending upwardly from the bottom oi the tank, a motor positioned exterior oi the tank, an apron shell spaced from said. tubular bearing and extending downwardly therearound, the diameter of said tubular bearing with y respect to said apron being less adjacent the upperv portion oi' said bearing than at the lower portionthereof, thereby decreasing the space between said apron and said tubular bearing as the apron approaches the bottom oi the bearing, a water impeller-blade mounted on said apron,

v and a shaft extending through said tubular bearing operatively connecting the top oi said apron cage, and vertical baille plates attached to said municating therewith. and vertical baille plates positioned on the sloping bottom of said tank but spaced a substantial distance from said well chamber to maintain a body oi liquid in the bottom of said tank in a relatively quiescent state.

4. In a'washing machine, a tank having acentrally and downwardly sloping bottom provided with an opening in the lower portion thereof, a

' well .chamber mounted to the bottom of said tank around the opening therein, said chamber being divided into an upper compartment and a lower compartment communicating' therewith, an outlet conduit communicating with said lower compartment, a centrifugal pump in said lower compartment adapted to ejectwater through said outlet conduit, a spray projecting impeller rotat' ably mounted on a substantially vertical axis in the lower portion oi said tank above said well chamber, rotatable driving means extending through said well chamber and operativelyv con- 10 necting said pump and said impeller, and baille plates radially positioned upon the sloping bottom of the tank, said plates being spaced laterally a substantial distance irom said impeller and adapted to maintain a body of liquid in said 'tank in a relatively quiescent state.

5, In a washing machine, a tank having a oentrallyvand downwardly sloping bottom provided with anl opening in the lower portion thereof, a well chamber secured to the bottom oi said tially vertical axis above said well chamber, driving means Ior'said impeller and said pump and -bailie plates positioned on the bottom oi said tank, said plates being spaced laterally a sub stantial distance from said impeller.

6. In a washing machine, a tank having a centrally and downwardly sloping, bottom provided with an opening inthe lower. portion thereof, a well chamber secured to the bottom oi the tank around the opening therein, a centrally perfo-l rated plate in said well chamber dividing the same into an upper compartment/and Va lower compartment, an outlet conduit communicating with said lower compartment, a centrifugal pump in said lower compartment adapted to eject water through said outlet conduit, a spray projecting rotatable impeller mounted on a'substantially vertical axis in said tank above said well chamber, rotatable driving means extending upwardly through said well chamber andoperatively connecting-said pump and said impeller, a plurality oi* baille plates positioned on said slopingbottom, said bailles being spaced laterally a substantial distance from said impeller and adapted to maintain liquid in said tank in a relatively quies- 50 cent state.

EDGAR S. STODDARD.

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