US2403526A - Dishwashing machine - Google Patents

Description

9, 1946. w. N. HARRIS I 2 403,52

msizwnsnme MACHINE Filed Oct. 6, 1941 4 Sheets-Sheet 1 July 9, 1 946. I w, HARR|$ 2,403,526 I DISHWASHING MACHINE Filed 001. 6, 1941 4 Sheets-Sheet 2 y 4 I N. HARRIS Y 2,403,526

'DIS HWASHING MACHINE Filed oc' c. 6, 1941 4 Sheets-Sheet :5

Patented July 9, 1946 DISHWASHING MACHINE William Norris Harris, Atlanta, Ga.

Application October 6, 1941, Serial No. 413,885

1 Claim. (Cl. 134-115) The invention relates to dish washing machines.

The primary object of this invention is the provision of an improved dish washing machine designed to be readily adapted for use with a sink of conventional design requiring a minimum of change in such a sink. f

An additional object is the provision of 'a dish washing device which will provide forimproved cleansing of articles positioned therein.

'A still furtherobject is the Dl'OViSlQl'i'Oi" a 'dish washing apparatus which may be readily utilized with a sink of conventional design and removed therefrom with a minimum of difliculty in order to permit the sink to be utilized in the normal mannerl w A still further object is the provision of suclna device which will be reliable and efllcient in oper- I when and of durable and "economical construction.

Other objects will in part be obvious and in part be pointed out hereinafter. s

The invention accordingly consists in the combinations of elements, features of construction and arrangements'of parts all as will be more fully pointed'out hereinafter anddisclosed in the accompanying drawings, wherein; f

Figure lis'a perspective view of a sink incorporating this improved dish washing device having the cover associated therewith in place.

Figure 2 is a top planview of the sinkhaving the cover and certain other elements of the device removed therefro Figure 3 is a top plan view of the driving mechanism adapted to be utilized in conjunction with certain movable elements of this invention. Figure-4 is an enlarged plan view of the sink disclosin the dish containingbasket, which com-,

prises afeature of the inventiomin position therein. v Figure 5 is a side sectional view of the device of this invention showing certain of the operat-' ing mechanism.

Figure 6 is an end elevational view of the bas ket shown in Figures 4 and -5.

. Figure 7 is a view similar to Figure 6 the opposite end of the basket.

Figure 8 is a side elevational View of a constructional detail.

Figure 9 is a side sectional view, certain-parts thereof being broken away, of the assembly of certain. of the operating mechanism of this device.

Figure 10 is a view closing a substitution other parts disclosed taken from similar to Figure 9 but disof certain parts for certain in Figure 9. .7

v isdesired to utilize the sink as a eraily indicated. at 20 j Similar reference characters refer to similar parts throughout the several figures oi: the drawings. v

Having reference now to Figure 1 there is gena sinkwhich may. be of substantially conventional design associated with which are hot and cold waterspigots 2i and 22 respectivelyboth adapted to flow into a common exitpipefl." I v An additional pipe I6 leads from the hot water nlet pipe to an automatic measuring valve ll of any desired conventionaltype, from which'a discharge pipe I! leads to an outlet l8a positioned in the side of sink 20 (see Fig, 2). An operating handle it controls the operation of valve ll.

Valve 11 is so constructed that movement of handle l9 permits the passage of a predetermined quantity of water into the sink. Thus when it dishwasher it may be filled to that capacity productive of maximum emciency in a substantially automatic manner. .Sink 20 is also provided with a drain pipe 24 opening into the bottom of the sink as at 25 (see Figure Y In suitable apertures 26 (see Figure 9) to be more fully described hereinafter-are positioned propellers 21 adapted to be rotated in a manner and for a purpose to be described hereinafter which extend upwardly: above the bottom of the sink a substantialdistance. Adapted to be positioned within the sink is a mesh wire basket generally indicated at 30 adapted for the reception of dishes, glasses,,silverware and analogous articles to be wash Certain of the wires 3llof basket 30. are so formed as to formpockets or apertures completely surrounding, and shielding propellers Z'Lfrom contact with the chinaware to be washed; Certain other wires 32-define "slots or pockets into which small plates may be -insorted. Others, 33 defin pockets of greater extent for the reception of larger articles of chinaware. Additional wires 34 (see Figures 4 and G) are so arranged as to provide pockets especially adapted to contain cups, portions of these pockets, comprising provide accommodation for the handles of said cups. I

All of the above-mentioned wires are associated with the base of the basket or container.

Extending above the base surface of the baswires 35, being so designed as to as to provide pockets for aaoasac ket are a series of further-wires 38 so formed glasses or tumblers, it being noted that the pockets so formed are inclined to permit the reception of the glassware in angularly inclined inverted'position facilitating ready drainage thereof.

Plvoted as at 40 to one end of basket 30 is an arrangement of wires generally forming a plurality of additional pockets 42 lso adapted for the reception of glasses or tumblers. Extending wire hooks 43 adapted to engage the sides of basket 30 (see Figures 4 and 6) retain device 4| in its proper position when pivoted into position over the basket. It will be noted that arrangement 4| overlies wires 35 formed for the reception of cups and accordingly, the diameter of the cups being relatively small as compared to that of plates, portion 4| may be folded over such cups when the device is to be utilized, thus effecting a material saving in space. Suitable insertion into and removal of the basket from sink 20.

From the foregoing it will now be seen, that basket 3| may be removed from the sink, filled with chinawar'e and silverware, etc., or all the dishes requiring washing after a meal, and deposited in sink 20 preparatory towashing such dishes. After the washing has been eflected, in a mannerfto be described hereinafter, basket 30 may, by means of handles 45, be readily removed indicated at 4 i 'ed with The upper ends of recesses 66 in-the walls of which are cut one or more grooves 81. Propellers 21 are provi.d-' ed with shafts 88 with which are associated one ormore splines 69 adapted to engage grooves 81 whereby rotation of shafts 82 occasions rotation of propellers 21. v

It will thus be seen that propellers 21" may be readily removed from recesses 66 in drive shafts 82 when desired by the simple expedient of pulling them upwardly out of the recesses. In such case and when it is desired to use sink for other purposes than washing dishes, suitable closure members Ill (see Figure 10) provided with spring fingers 1| are provided and adapted to be inserted into recesses 66 whereby to completely close the bottom of the sink for any purpose as desired.

handles are provided to facilitate the ready other desired location.

from the sink to facilitate drainage and drying of the cleansed dishes.

Referring now back to Figure 1 there is generaliy indicated at a cover member adapted to completely enclose the sink when the, washer is in operation. Cover member. 50 is adapted to engage a peripheral groove 5| positioned entirely about the edge of sink 20 and in which may of soft rubber or analleakage when thedebe positioned a gasket 52 ogous material to prevent vice is in operation.

A suitable aperture 53, provided with a movable closure member 54, is positioned in the top of cover 50 to permit filling of the sink while the cover is in place. Closure member 54 may, if desired, be of glass in order to permit observation of the operation of the device or the water level therein when the cover is in position.

It may here be pointed out thatpipe 23 is rotatable and it is desirable that opening be located in a position in the arc ofrotation of the discharge nozzle of pipe 23. Cover 50 is also provided with handles 55 to facilitate removal and replacement thereof.

It should also be noted that there is positioned within drain 14 a pop-up. valve (not shown) of conventional design controlled by a, lever 56 attached to a rod 51' controlled by a push button 58 located outside cover 50 whereby the sink may be drained, if desired, without removal of the cover.

Having reference now to Figure 9 it will be seen that the apertures 26 in the bottom of sink in are provided with bushings and packing gaskets 8| within which are adapted to rotate drive shafts 62 ,to which are fixedly attached driving pulleys 63. Suitably threaded retaining members 59 engaging corresponding threads or projecting portions of sink 20 serve to retain bushing 60 and gaskets 8! in related assembly. The opposite ends of shafts 62 may be iournaled in bushings 64 positioned in any suitable extending projections 65 depending below the level of sink 20. I

Having reference now to the means for rotating propellers?! thereis provided an electric motor of any desired type adapted to be secured to the wall adjacent the sink, or in any Motor 80 is provided with a driving pulley Bl with which is associated a drive belt 82 which in turn engages all of pulleys 83. Thus it will be seen that upon the actuation of motor hereinafter, the propellers 21 are all caused to revolve simultaneously and at uniform speed.

As shown in Figure l a push button type switch 85 is provided for the energization of motor 80. Switch 85, however, is connected in series with a second push button type switch 86 in such manner that energization of the motor is precluded unless both switches are closed. A wedge-shaped proiectionb'l (see Figure 8) is provided on cover 50 adapted to engage push button 86 to close that portion of the circuit associated therewith when the cover is in position. Accordingly motor 80 cannot be energized unless the two switches are simultaneously closed, which fact precludes the energization of the motor and hence rotation of the propellers when the cover member 50 is not in place, to avoid the throwing of water about the room as might otherwise be the case.

device as a dish washer, assuming that cover members 10' are in position, they are first removed and propellers 21 inserted into their associated recesses 66. Boiled dishes are then stacked in basket 30 at any suitable location, basket 30 then being positioned in the sink, as best shown in Figure 5. The sink may now be filled with water through valve 11 and inlet 18a, and'soap or other suitable cleansing agent and cover 50 placed thereover. If desired, cover 50 may, of course, be positioned first and the sink filled through aperture 53. Afterthe cover member is in place,

which placement, closes switch 86, push button 85 is closed starting the motor 80 which in turn. rotates propellers 21 at a desired speed, thoroughly diffusing the soapy water over and into all the articles to be washed positioned in the basket 30. v It may here be pointed out that basket 30 is so designed and propellers 21 insure the, most effective dissemination of the cleansing fluid over all the surfaces of the plates, glassware, silver, etc. positioned in the basket,

After the cleansing operation is continued a sufficient length of time depression of button 58 will'open the valve in drain 24 and permit drainage of the sink. After the sink is drained, the valve may be reclosed and the sink refilled with rinsing water through aperture 53 in cover 50 4 drive shafts l! are provid- 80 in a manner to be described so positioned as to whereupon the propellers may be restarted and fresh water thoroughly disseminated over all the articles to be washed, to rinse the same. Upon the conclusion of one or more rinsing operations, cover 50 may be removed and basket 30 may be placed in a suitable location to permit the dishes to drain after which they may be removed therefrom for drying.

It will be readily understood that while there are shown herein tour propellers, a greater or be made in the embodiment herein described and shown it is to be understood that all matter hereinbei'ore set forth or disclosed in the accompanying drawings is to be interpreted merely as illustrative and not in a limiting sense.

I claim as my invention: A device of the class described for a sink having an opening and an exterior projecting portion less number may be utilized if desired and that while the driving means herein shown is a'belt and pulley arrangement, any other suitable drive mechanism, such as flexible shai'ting, may be employed.

Now from the foregoing it will be seen that there is herein provided a device accomplishing all the objects 01' this invention and many others including advantages of great practical utility.

As many embodiments may bev made of this inventive concept and as many modifications may about said opening, and a bracket on the exterior of said sink, the device comprising a shaft adapted to be Journaled in said opening and said bracket, packing around the shaft at the outer end of said portion, a cap about said shaft for engaging said portion and enclosing said packing, said shaft in the top thereof having an axially extending recess to selectively receive attaching means of a propeller or attaching means of a closure, and operating means for saidshatt between said cap and bracket.

' W. NORRIS HARRIS.

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