US1591765A - Dishwashing machine - Google Patents

Description

3 Sheets-Shefl July 6, 1926.

R. MARX DISHWASHING MACHINE Fild May v. 1921 Patented July 6, 1926.

uuriiiul Vs'iivriszs- RICHARD MARX, OF PHILADELPHIA, PENNSYLVANIA.

DISHWASHING MACHINE.

` Application nica my 7,

/ne object. of my inventionis to provide ya relatively simple and effective machine for quickly and thoroughly washing dishes and V which shall be particularly characterized by being had to the accompanying drawings, in

the provision of novel means for forcibly`- delivering water to such dishes during the washin operation.

Anot er object of the invention is to provide a novelorm of bucket or container for successively receiving bodies of water frame covered with more or less coarse wire netting and its end members 5 and 7 are andl delivering the same to or over the dishes to be washed in such manner that foreign substances adhering to them shall quickly and certainly be removed, the inven- -tion more especially contemplating aconstruction whereby the rotation of the bucket Q or container causes a stream of waterto be continuously and forcibly delivered upon the dishes practicall from the time it emerges from the mass oiwater at the bottom of the machine until the time it again moves into said water.

rilhe invention further contemplates a novel means for supporting the dishes to be washed relatively toV arotary bucket which discharges thereon a continuous stream of' water, whereby the insertion and removal of said dishes is materially facilitated.

I further desire yto provide novel means whereby the operation of a dish washing machine will be prevented while `theqcoyer thereof israised or open. j

These objects and other advantageous ends I attainas hereinafter set forth, reference which,

Fig.,1 is an end elevationiof a dish washj ing machine constructed in accordance with m j invention;

ig. 2 is a vertical section of the machine shown in Fig. 1, taken,r on the line 2-2 of:

said figure;

Fi 3 is a fragmentary vertical section on t tated. within vthe container 2 is'will scoop Fig. 4 is a fragmentary perspective View of one of ythe buckets.

In the above drawings, 1-1 represents a suitable frame on which is supported a tank or'container 2, usually made of sheetmetal.

The lower portion of this container is preferl ably semi-cylindrical in form and its upper portion of rectan lar. section; open at the top and having hinged to one edge a cover A6. Within the container is mounted a tray or basket 4 for the reception of dishes to i921. sriai no. 467,557.

bearing 9 supported by the second of the side walls of said container 2.

The tray preferably consists of an open preferably extended upwardly at its rear side where there is hinged to them a plate or saucer rack 10. This latter isordinarily supported in a substantially horizontal po-l sition by its,pivots and thepins 10 projecting laterally from bars 5a carried by the frame or body of the tray. Said end members are also connected by a transverse bar 11 having projecting pins or hooks 12 designed to receive the handles of cups to be washed. The body of the tray or basket has upwardly projecting and suitably placed sets of rods 13, preferably inclined to the vertical so as to vseparate and hold in place the larger dishes to be washed.

Rotatably mounted on the trunnion 6 is a spider 14 and a second spider 15 is similarly mounted on but fixed to the spindle 8. These two spiders each consists of a hub and two pairs of oppositely projecting arms designed to support buckets 16 whose construction is illustrated in detail in Figs. 3 and 4. Said buckets each consists of a sheet metal or light cast structure in the form of a flat-I tened, laterally elongated container of a length slightly greater than the length of the dish-containing tray or basket, closed at one laterally extending edge or side and open at the opposite and advancing side.

Each of the buckets is so mounted on its supporting arms that as the latter are rol up and be filled by the water in the bottom of the container under the dish tray. In accordance with my invention each of the buckets or scoops is characterized by having an opening or slot 17 extending laterally for its full length in its inner side and that edge of said opening-nearest the closed end or bottom ofthe bucket is bent4 outwardly to form a projectingli edge 19 of the opening is similarly bent inwardly.

18. The opposite lio ' of the frame 1 below the container 2. Under the lower part of the latter is mounted a suitable heating device which in the case illustrated consists of a pair of burner pipes 26 supplied from a fuel pipe 27 through a controlling valve 28 whereby water in said container may be heated. For drawing ofi'V such water when desired, a single outlet pipe 29 is provided and this is equipped with a valve 3() controlled by an operating rod 31 vertically slidable on one side of the container 2.

Under conditions of use the dishes to be washed are placed within the tray or basket 4 for which purpose the cover -S-is raised and the rack l() is swung upwardly into the positions shown in Fig. 3. ,The larger dishes are preferably placed between the sets of rods 13, the cups are hung on the hooks 12 and after the rack 10 has again been swung to a substantially horizontal position, the saucers are placed in engagement with the rods 13L thereof. A suitable quan-- tit of water (in a typical case about two Ua lons) is then placed in the container, the fuel. controlling valve 2,8 is turned on and the gas or other fuel ignited as it escapesl from the burner pipes 26. The water in the container is thus heated and, with the quantity noted, is brought to the boiling point 1n about six minutes. The motor 25 is then started and through the gearing. 24.-23, pulley 22, belt 21, pulley 20, spindle 8, the spider arms 14 and 15^with the buckets 16 are rotated, in the present case in a counter-clockwise direction. A s a consequence the buckets successively dip into and are filled by the water in the bottom of the container 2 and as they move upwardly from their lowest position the water inV each, of them begins to How out through the opening 17.,

It is particularly to be noted that this opening is placed in the inner side of each bucket about midway between the open and closed ends thereof, so that during the upward movement of the bucket the water;

flows out of it under the head due to the mass of water between the open end of the 'bucket and said opening. This water is delivered forcibly toward the dishes in a continuous stream or sheet extending for practically the full width of the container, and

the dimensions of the opening and of the tinues without interruption, being delivered from the lower part of the bucket between said opening and its closed end. The lip 18 insures that the water is delivered in a Well defined stream from the o enin 17, without tending to adhere to an run own the outside surface of the bucket, while the lip 19 insures the delivery of water from the opening 17 while the bucket is moving downwardly.

The motor operates the buckets at such a speed that there is thus a continuous flow from each bucket practically' from the time vit moves out of the body of water in the bottom of the container to the time it reenters the same and this flow takes the forni of an unbroken'sheet which is forcibly delivered upon and into all parts of the various dishes carried by the basket 4. Since the water so delivered flows under an appreciable head from within each bucket and also falls through some distance before striking the dishes, the latter are elfectually cleaned, all pieces of solid or greasy material being invariably washed olf by the forcible abrading action of the water, which action is hastened and further made certain 25 is stopped and by means of the operating rod 31 the valve 30 is openedto allow the water in the container 2 to flow out into a suitable receptacle' such as the pail 33. For a short time thereafter the burner 26 is continued in operation -so that what small amount of water still remains in the container 2 and on the dishes is vaporized, after which the fuel valve 28 is closed. Said container is now full of steam which effectively sterilizes the dishes and leaves them in a perfectly clean, polished condition. Thereafter the cover- 3 may be opened and said dishes removed.

If desired I may control the operation of the motor 25 by means of a switch 34 having two .elements of which one is mounted on the body of the container 2, while the other is mounted on the cover 3. The latter through a flexible conductor 35 is connected to a suitable source of current and the former is connected to the motor through a second conductor 36. With thisarra/ngement the movement of the cover 3 to its closed position closes the switch 34 and thus supplies current to the motor 25.

In a typical case above described the motor is operated at such a speed that the buckets 16 make twenty revolutions per minute ,and their capacity is such that during a two minute operation of the machine 160 gallons of water are delivered to the dishes. Obviously but a. single bucket or more than 'two buckets may be employed Without departing from my invention.

One of the essential features and material advantages of my machine resides in the forcible delivery upon the dishes of a succession of streams or sheets ot' water which flow from the buckets respectively in unbroken streams or masses during all of the time'that said'buckets are moving above the dish-containing basket. The streams so delivered possess considerable force, sinceA l Aof their position in the basket or tray.

I claim: t

1. The combination in a dish washing machine of a container; a relatively fixed structure yfor supporting dishes therein; with a bucket of flattened form mounted on a horizontal axis in said container and rotatable about said structure and having one end open to scoop up water from the container as it is rotated, said bucket having a laterally extending slot-like opening formed in its inner side approximately midway between its closed and open ends, and

said bucket being provided with an inwardly curved lip projecting inwardly of the bucket along thel retreating edge of said opening` 2. The combination in a dish washing machine of a container; a relatively fixed structure for supporting dishes therein; with a bucket of Vflattened form mounted on a. horizontal axis in said container and i' rotatable about said structure and having one end open to scoop up water from the container as it is rotated, said bucket havv ing a transversely extending slot-like opening formed in its inner side and being r0- vided with lips on the opposite edges o the opening of which that on the advancing edge is curved toward the dish containingstructure and that on the retreating edge is curved in the opposite direction.

' RICHARD MARX.

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