US1658413A - Dishwashing apparatus - Google Patents

Description

Feb. 7, 1928. 1,658,413

E.. J. PATELSKI DISHWASHING'APPARATUS Filed Dec. 1'?. 192s s sheets-sheet 1 Feb. 7, 1928. 1,658,413

E. J. PATELSKI.

DISHWASHING APPARATUS Filedvnec. 1'7. 192s s sheets-sheet s Patented F eb. 1928.

'UNITED STATES,

ERICH J'. PATEISKI, OF CHvICAGO, ILLINOIS.

DISHWASHING APPARATUS. v

Application mea December '17, 192s. serial m. 631,181.

This invention relates to improvementsA in dishwashing apparatus, and more particularlyto a novel adaptation of a power drivenwater circulating device to a sink, in which'.

the bowl serves as the dish receptacle during the washing operation. p

'Among the objects of theinvention, is to provide an elicient and practical power driven agitating unit adapted to vcirculate the body of the cleansing water in a mannei` to eil'ectively and thoroughly cleanse the dishes.

A further object of the invention is to provide a sink equipped with a water circulating apparatusiso arranged and designed as toV be entirely separate from the bowl, thus permitting the sink to be available at all times, for usesother than the washing of dishes.

A further object of the invention is to provide a drying compartment as a part of the sink together with means for circulating the air through the drying compartment by a positively driven fan forminga part of the water agitating mechanism.

A preferred embodiment of the invention is clearly shown in the accompanying drawin in which,-

igure 1 is a view in vertical section through a sink especially designed for the purpose and equipped with the water agitata 1n and dishdrymg means.

igure 2 is a top plan view of one end portion of the sink in which the bowl is located and showing the water agitatin'g apparatus in horizontal section, and

Figure 3 is a view in vertical section taken on line 3 3 of Figure 1.

The sink herein disclosed is preferably of the' cast metal and-enamel form used extensively for kitchen .equi ment, and except for certain departures in tlesign made neceary bythe incorporation of the dish-washing apparatus, it includes the usual drain board 1," ,arear pnel 2 extending vertically above the ard, and a bowl 3, with the usual' drain openings 4 4 .in the rear. panel and above the bowl through which the faucet connections extend. The sink is sup rted u n the floor 'and against the wall o the kitc en by means of le or brackets, whicheveris the more co'nvenlent,

For reasons hereinafter appearing, the the bowl 3 is fairly deep and preferably oval in shape, but otherwise similar in all to that of the ordinary sink., It has in its bottom wall, a drain 5, communicating with said casi the usual tra and drain connections 6, and having a per orated plate 7, set in flush with the bottom of the bowl.

For obviousreasons the bottom drain is provided with va valve 8, so that vthe bowl can be filled with water during the'washing operi ation. In addition, an overflow outlet 9 lis preferably provided nearthe upper edge of the bowl and in itsrear Wall, said overow outlet being also provided/with avalveV 10 and connected with pipe connections 11 which lead toa common discharge. The valves of .the bottom and overflow. drains are prefer ably operated by means of a single handle 12 located near one end of the sink, said handle being connected with the valves by suitable operating membs, so arranged that when the valve 8 in the bottom drain is closed,` thevalve in the overlow drain will be open, and vice versa, thereb insuring the proper relative positions of t e valves at all times. By the use of an overflow, the dan r of the bowl overiowing durin the dishwashing operation is avoided an maintainsv a uniform high water level which allows fresh water to iiow into the bowl during the washing operation, and the grease and particles of food floating on the top of the water to be carried of.

-The agitating mechanism is mounted beneath the drain board 1, and comprisesa motor 13 suspended from the underside of the drain board, by means of an inverted base plate 14, a cylindrical casing or chamber 15, opening into the bowl 3, near its bottom, and a circulating member 16 mounted within and fixed to a shaft 17 journalled in a suitab e bearing 18 at the outerl or closed end of the casing and driven by the'motor. Intermediate the shaft bearing of the casing 15 and the motor ismounted a fan 19 to be used for the circulation of air for the purposes hereinafter to be set forth. p Referrin more in detail to the rotative water circu atin member 16, the saine comrises a cylindric hollow shell 20, somewhatless in diameter vthan the surroundin housing 15, and extending substantially e full length thereof. Cast integral with the outer urace of ltlhe shell is lhelical laes21,treeinnum r, metrically about the' shell and extenlyillll substantially the full length of the she from a point short of its forward end and projecting beyond its rear end into a adjacent the closed en d of the casing, w 'ch is sli htly rounded or spherical in contour. On t e inside ofthe shell is a somewhat similar arrangement of blades 22 cast. integral with the shell and'` an axial sleeve or bushing 23, which has fixed connection with the end of the drive shaft 17.

The internal blades 22 are two in number and likewise helical, but their pitch or lead is the reverse of that of the external blades 21, thus if it be assumed that the shell is rotated in a .body of water, one set of blades will move the water one direction and the other set in the opposite direction. As will presently appear, this is the intended action of the blades, namely, that the internal blades drive the water inwardly through the shell to the rear of the housing 15, and thence rcarried forwardly again by the external blades 21, and discharged from the casing. 20. This constant indux and discharge oi the body of water from the bowl 3 promotes` the circulation of water among the dishes which eects the cleaning action.

As already pointed out, the housing 15 lits within an opening in the bowl, preferably by means of a threaded flange and shoulder connection so that the parts can be readily disassembled. Theentrance opening to the casin is covered by erforated plate or cap 24 w ich prevents sdlid matter from being carried into the casing and otherwise divides the casing and the bowl. The plate 24'is provided with an annular tlange 24a which ts within the opening to the casing and has screw threaded connection with the open end thereof. Moreover, the platev acts as a bearing for the\ shaft of the cylindric rotor, there being supported at the center of the plate an oilless bearin 25. The face of the plate 25 is substantial y flush with the side wall of the bowl, although the bowl is preferably provided with depressions or recesses 3, 3a on either side of the plate which expose portions of its annular llange 24a.

.A definite arrangement of apertures or slotsarepuformed in the plate 24. As clearly shown in Figures 2 and 3, there are three oups of concentric slots in the circular ace of the plate, the innermost and intermediate groups 26 and 27 being in alignment with the internal passage of the shell 20,

Jwhereas the outermost group 28 is in alignment with'the annular space, urrounding the shell. Between the outer an the intermediate grou s ofopenings 28 and 27, is an 29, of the annular divi ing wall or ring same diameter as the cylindric shell ofthe rotor 20, therforward edge of the latter being in close proximity thereto with but f a 'slight clearance between. In addition to the openin s in the front face of the plate there'are a two series of lateral openings 30, 30 in the annular flange 211'?s of the plate, these openings facing radially toward the "I depressions 3, 3* in the bowl. The lateral astenia groups of openings 30 serve the same purpose as the outer concentric group 28, since they also communicate with the space surrounding the rotor 16.

The action of the agitating mechanism and the mannerin which the cleaning action is accomplished will be understood from the followingzThe bowl is first filled with a qnantity of soapy water, the bottom drain being closed and in which posit-ion the over- :flow drain is open. The motor is then started and drives the rotor in a counterclockwise direction so that the internal blades 22 function to draw the water into the housing through the registering groups of openings 26 and 27. Reaching the rear of the housing the water is picked up by the external blades 21 and carried forwardly along the outer passage and discharged into the bowl, the current bein divided between the outer annular group o' openings 29 and the lateral groups 30, 30. Due to the oval shapeb the bowl and the curved depressions 3a 3a the water thus discharged into the bowl, sets up a series of cross currents and eddies, throughout the ventire volume of water. Manifestly, it is impossible to accurately trace the various currents that would be set up, but some idea can be had of the` Y thorough a 'tation that is produced, from the fact t at the streams issue from both sides of the plate in a radial direction as well as longitudinally through the outer circular row of o enings, so that there is a multitude of c n loting currents which produce the desird action for effective cleansing. The oval shape of the bowl further assists in promoting eective agitation in v that it prevents any tendency toward a con certed movement about the center of the 105 bowl, as would be present if it were circular, thus breaking up any general movement of the water into many small whirlpools or eddies. A

Provision is also made for rapid drying of the dishes, and whilethe drying means may or may not form a part of the washing apparatus it forms a convenient addition thereto and makes a complete apparat-us forl dish-washing.

The drying of the dishes is made possible by the provision of a housing 31, which not only encloses the motor and other parts of theagitating mechanism, but'provides a space therebelow in which the dishes may be placed after Washing, a wire basket being ordinarily used for handling thedishes, both in washing anddrying.

The-housing 31 is constructed more or l less like an oven, with side and bottom walls, and which depends from the under side of the/ drain board and below vthe sink oapron 32, and the bowl 3i. As already suggested, the upper` part of the housing encloses the moving parts and the lwer part forming 139 f is a series of transverse ouvers 34 with o enings leading to the space below. T ese louvers incline toward the fan 19, for directing the air` currents created thereby into the drying space. A baiiie 35 is also located in the upper'fspa-ce which extends from a point above the fan downwardly and toward the far corner of the space above the partition wall 33. I-Ioles or other forms of openings 36 and 37, are located at suitable places in the housing walls or above and below the' S partition wall 33, so as to provide for 'the necessary circulation of air, which is kept in motion by the fan 19. A heating coil 38 may be conveniently placed inthe bottom of the drying s ace for facilitating the drying operation. ccess to the drying space, as Well as to the mechanism above is had by means of a door 39, in the front Wall of the housing. This door is hinged along its bot-- tom (or side if preferred), and otherwise is similar to the ordinary oven door.

The apparatus thus disclosed provides a compact -and unitary sink equipment for household use, having the advantage of combining in a single fixture 'all of the require ments for mechanical dish-washing and without interfering with its'use for purposes for which the ordinary sink may be used. The agitating mechanism is completely removed from the sink bowl, thus leaving the latter free and open at all timesso that it can be kept clean, as wellY as usable for any purpose other than washing dishes. In short,`the use of an apparatus embodying the present invention makes -it possible to incorporate a mechanical dishwashing apparatus in a sink without any ofthe objectionable features that are present in other devices for this purpose. A

I claim as my invention:

1. In an apparatus of the character described, the combination of an open receptacle, a cylindric casing communicating at one end with said receptaclel and closed at its opposite end, a rotor mounted in said casing and comprising an open ended cylindric shell of reduced diameter arranged axiallyv of said casing, and dividing the space therein in internal and `external passages connected vthe, closed end thereof, said shell having helical impeller blades extending lengthwise the outer 4surfaces thereof and radially of-said external passage.

2. In an apparatus ofthe character described, the combination of a receptacle, av

cylindric casing communicating at one end with said receptacle and closed at its opposite end, a rotor in said casing comprising an open ended cylindric shell of less diamevter than said casing and extending axially Ythereof tol form internal and external pasand internal passages communicatin sages connected at the closed end of said l casing, said shell having helical impeller.

blades of opposite lead extending lengthwise of the inner and outer faces thereof and radially of said passages.

3. In an apparatus of the character .de scribed,- the combination of a receptacle, a cylindric casing communicating at one end with said receptacle and closed at its opposite end, a rotary impeller extending axially of said casing and comprising. an open ended cylindric. shell extending from the open end to a point adjacent its closed end, said shell being spaced radially inward from said 'casing to form an internal passage and an annular external passage connected beyond the inner Aend of Said shell, and series of helical impeller blades of opposite lead extending longitudinally of the inner and said passages.

4. In an apparatus of the character de-Y scribed, the combination'of a receptacle, a cylindric casing communicating at one end with said receptacle and closed at its opposite end, a rotor comprising an open ended cylindric shell extending axially of said casing and forminginternal andexternal passages connected by a space at the closed end of Said casing, and helical impeller blades of opposite lead extending along the outer and inner surfaces of said shell and radially of said passa es, one of said blades projecting into \sai space at the closed end of said easing, whereby the water in said receptacle is drawn into said casing through one of saidpassages and discharged therefrom through the other passage.

5. In an apparatus of the character described, the combination 'of a receptacle, a cylindric casing communicating at one end with said. receptacle 'and closed at its opposite end, `a rotor comprising an open ended cylindric shell arranged axially of said casing and forming within saidcasing externzl wit said 'receptacle at the-open end of said casing and connected with each other at the closed end of said casing, said shell having series of helical impeller blades of opposite lead extending len hwise of its inner and outer surfaces an radially of said passages, one of said series of blades extending beyond theinner end of said shell into the space at the closed end-of said casing:

6. In an apparatus of the character described, the combination of a receptacle, a

cylindric casing communicating at one end` l with said receptacle' and closed-at its opposite end, a rotor comprising an o en ended cylindric shell arranged axially o said casing and reduced in diameter togform external and internal passages communicating with said receptacle at the o en end of said casing an terminating s or:- of the fitting closed end of said casing to provide connecting passage, series of helical impeller blades of opposite leads extending lengthwise of the inner and outer surfaces of said shell and. radially of said passages, and a plate over the opening to said casing and avmg openings therein registering with said external and internal passages.

7. In a dish washing apparatus, the combination bf a bowl, a horizontal cylindric casing opening 'at one end into said bowl ad'acent its bottom and closed at its opposite end, a shaft extending axially 'of said casing and through the end wall thereof, a motor operatively connected with said shaft exterior said casing, a cylindric shell open at both ends and mountedon said shaft' within said casing, said shelljbeing spaced radially from the inner wall of said casing to form an annular space therebetween, and inwardly from the closed end of said casing to provlde a space Connecting said annular space withl theinternal space of said' shell, said shell having a 'series of internal and external impeller blades of opposed lead extending radially of'said spaces, the ends of one series of blades extending beyond said shell into the space at the closed end of said casing.

8.111 a dish washing apparatus, the coinbination of va bowl, a horizontal cylindric casing opening at one end in to said bowl adjacent its 4bottom and having a concave end wall at its opposite end, a shaft extending axially of said casing and throu h the end wall thereof, a motor operativey connected with said shaft exterior oflsaid casing, a cylindric shell open at both ends and mounted on said shaft within said casing, said shell being spaced radially from theinner wall of said casing to form an annular passage therebetween and terminating short of the closed end of said casing'` to provide a space. connecting said annular passage with the internal passageof said shell, series of helical impeller blades of opposedlead extending longitudinally of the inner and outer surfaces of said shell and Aradially of the internal and external passages, said outer series of blades extending beyond the inner end of said shell into said space beyond, and

- said passages.l

a plate V p fitting into the open end of said casing and In witness whereof, I Vhereunto subscribe my name this 4th day of December, A. D., 1923.

ERICH J. PTELSKI.

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