US1240298A - Dish-washing machine. - Google Patents

Description

L. S. BEST.

DISH wAsHxNG MACHINE.

` APPLICATION FILED AUG.28| 1916. 1,249,298. Patented Sept. 18, 191?.

2 SHEETS-SHEET l.

t @canard SB es ln V( miriam/MA* ATTORNEYS-l DISH WASHING MACHINE. APPLICATION FILED AUGJB. 1916.

L. S. BEST.

Fig.

Patented Sept. 18, 1917.

2 SHEETS-SHEEf 2.

1 N V PINTOR Leonard es.

HY Y

ATTORNEY les soap water or the like.

porting or sUIsUN,

LEoNAzan s. Bns'r,

. BIRMINGHAM, or

' van s'rAns DISH-WASHING MACHINE.

Speoioation of Letters Patent.

`Patented Sept. 18, 1917.

Application led August 28, 1916.v Serial No. 117,189.

To all whom it may concern.'

Be it known that l, LEONARD citizen of the United States, residing at Suisun, in the county of Solano and State of California, have invented a new and useful Improvement in Dish-Washing Machines, of which the following is a specification.

This invention consists of a dish washing machina l One of the objects of the present invention is to provide a simple, cheaply manufactured, easily operated dish washing machine, comprising a container provided with dish supporting racks so arranged vand positioned within the container that :the dishes supported thereby may be cleaned by the flushing action of a cleansing liquid such as S. B Es'r, a

Another object of the invention is to providel a novel rack, and furthermore an impellente maintain a continuous ad v10- vlent circulation of the cleaning liquid between the dishes. l

Further objects will hereinafter appear. *Theinvention consists of the parts, and the construction and combination of parts as hereinafter more fully ,described and claimed, having reference to the accompanying drawing in which l Figure `1 is a central vertical section through the dish washing machine.

Fig. 2 is a plan view showing a cover removed.

Fig. 3 is asperspective View of one form of dish supporting rack employed.'

Fig. 4 is a similar view of another form of rack. y

Referring to the drawings in detail, A indicates a cylindricalshaped tank provided with a sloping bottom 2, and a central recessedsection 3. Mounted interior of the tank and centrally positioned therein, is a shaft 4 upon which is secured an impeller 5 hereinafter to be described.

The lower end of the' shaft 4 projects through the central recessed portion 3 in the bottom and is here supported in a pair of bearing members 6'l and 7 one of said bearings being secured on the bottom of the container, and the other in a bracket 8.

Secured on lthe shaft intermediate of the bearings 6 and 7 is a driving pulley 9 to which power may be transmitted in any suitconnected with a discharge able manner and I15, to which form of removable dish sup-` to provide' .ters and the like.

.tank A, and are openingformed in the central recessed sece tion 3 is a valve 10v which may be opened when it is desired t0 empty the tank.

The tank proper may legs 11 or any convenient frame, and it 1s be supported upon furthermore provided with a cover 12 which may be removed to fill the tank with soap water or any other cleaning medium and also for` the purpose of inserting or removing a pair of dish supporting racks such as shown in Figs. 3 and 4 The rack shown` in Fig. 3 is semi-circular in s ape and consists of a pair of end frames 14 and is secured a semi-circular shaped bottom frame 16.' Pivotally mounted in the frame section 16 is a plurality of wire rings 17 which are adapted to receive and support plates and saucers or like dishes, and for the purpose of preventing said dishes from rollin out between the supporting rings, a p urality of semi-circular -y side-stays 18 have beenprovided which are secured to the frame ends '14 and 15.

Mounted intermediate of. the frame ends 14 and 15 in any position between 17, is an elongate open mesh knives, spoons, forks, shown 1n- Wire stays 18 of semicircular shape, but is preferably more open in construction to permit insertion of larger dishes such' as plat- .These racks when filled with dishes, arelowered into the cylindrical when the tank is filled with soap water or any other cleansing medium. The impeller provided forms one `of the important features of the present invention.

the ringswire cylinder vof holder 19, which is adapted to receive etc. The rack member Fig. 4`iss1milarly constructed of es.v

here practically submerged By referring to Fig. 1 it will be .seen that the hub 20 of the impeller is cone shaped,v

and vthat the impeller blade consists of one single spiral shaped blade having its largest area at the bottom as indicated atv 521, and gradually decreasing as end of the hub Q0. suitable source to the pulley 9 and shaft 4, upon which the impeller it to rotate with sufficient speedto maintain is mounted, causes it reaches the upper Y Power applied from any a continuous and violent circulation of the cleaning medium. The shape of the spiral bladed impeller throws the water in which the dishes are submerged radially in all-directions with suchviolence that the surface of the submerged dishes are readily cleansed in a very few minutes, the open construction of the dish supporting racks being such that water is permitted to penetrate and circulate freely in all directions. The circu lation is aided by the inclined annular bottom, and the central depression from which the spiral distributer draws its supply.

In actual operation it has been found desirable to employ two waters, first the tank is filled with soap water which is circulated between the dishes approximately 3 minutes. The impeller is then stopped and the valve 10 opened to permit the tank to be emptied. he tapering bottom and the central recess I l3 permitting practically speaking, every .stance may be added to the water.

drop to be removed. Valve 10 is then closed and the tank again refilled with a rinsing water which is again circulated' a few minutes and finally drawn olf through the valve 10. This rinsing water should preferablybe comparatlvely hot, as the dishes will be dried by the heat imparted when the water is removed. The individual racks may then be removed and the dishes placed upon the shelves, as wiping with towels for the purpose of drying is not necessary.

Theracks constructed as here shown, not

only form convenient baskets for carrying the dishes to and from the pantry, but are so open in construction that circulation around every dish or article submerged is permitted;

While soap water has here been mentioned as a cleaning medium, itis obvious that soda, ammonia, or any other grease cutting sub- Similarly while a pulley is shown as connected with the impeller shaft, it is obvious that a direct connected electric motor or hand operated gear drive may be employed if desired.

The materials and finish of the several parts of the machine may otherwise be such as the experience and judgment of the manufacturer may dictate.

I wish it understood that various changes in form, proportions, and minor details of construction may be resorted to within the scope of the appended claim, and that I do not wish to limit myself to the specific design or construction lhere shown.

Having thus described my invention, what I claim and desire tovsecure by Letters Patent is In a dish washing machine of the vcharacter described, a cylindrical container, having an annular inclined bottom and a depressed central sump, means carried upon the annular bottom around the central sump, to support articles to be washed, a vertical shaft journaled and turnable in the center ofthe I sump, said shaft having an upwardly divergent hub, a spirally disposed blade fixed to the hub, decreasing in diameter upwardly from the bottom, and a motor connecting with the shaft below the sump.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

LEONARD S. BEST. Witnesses: l WILBURN W. CUNNINGHAM,

F. O. SGARLETT.

Images