US657251A - Dish-washing machine. - Google Patents

Description

No. 657,25I. Patented Sept. 4, |900. E. SANDSTHOM.

DISH WASHING MACHINE.

(Application led Nov. 7, 1899.)

l l a (No Model.)

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llniiTnn `TnQTns PATENT Curran.

EDVARD SANDSTROM, OF WILMNGTON, DELAlVARE.

DISH-WASHING iviAc'zl-llurfa.V

SPECIFICATON forming part of Letters Patent No. 657,251, dated September 4, 1900. Application filed November 7, 1899. Serial No. 736,200. (No model.)

To ctZZ whom it may concern:

Be it known that I, EDWARD SANDs'rnoM, a citizen of the United States of America, and a resident of Wilmington, county of New Castle, and State of Delaware, have invented certain new and useful Improvements in Dish- Vashing Machines, of which the following is a specification.

My invention comprises a couple of upright reversely-rotatin g sheet-metal cans one within another and both within a water-holding tub and being constructed and provided with means for operating them ,as hereinafter described, whereby it is designed to provide a simple, efficient, and rapid dish-Washing machine that may be made in any desired size of small or large capacity, either for manual or other power and which as at present constructed isillustrated inthe accompanying drawings, in which- Figure 1 is a sectional elevation of my improved dish-washing machine. Fig. 2 is a top view with the cover removed. Fig.' 3 isa side elevation of part of the inner drum. Fig. L1 is a detail of the operating mechanism in vertical section. Fig. 5 is a detail' in plan view of the cross-bar of the water-circulating can.

The construction and operation of my improved dish-washing machine are as follows:

In the first place a suitable tub a, preferably of wood, is set up on any suitable support b, said tub being provided with a central upright tube o, extending through the bottom and reaching nearly to the top of the tub and also provided with a suitable cover CZ, in which is a suitable inlet @for the water, and a faucetfis attached to the bottoml of the tub for drawing otf the water. Within the tub is a sheet-metal can g, a little smaller than the tub, open at the top and centrally perforated in the bottom to receive the tube c when inserted in the tub, with a down- Wardly--projecting collar h of the bottoni for a step-bearing to rest on the bottom of the tub and revolve thereon. On the top of this can is a cross-bar t', detachably connected at its ends to the sides of the tub, respectively,

iand at its center receiving the upper end of a shaftj, extending up through tube c from below the bottom of the tub, where it has a step-bearing 7o', and is geared with the drivyalso centered on tube c and ing-shaft k by bevel-wheels Z for rotating the can g, said shaft being keyed or feathered in the cross-bar t', as indicated at m and n, or connected in any other suitable Way for so driving it. Within can g is another can o, similarly centered on tube o, but resting on a shoulderp so as to rotate. It has a cross-bar g at the top,

having a bevelwheel s attached to it, said bar and wheel both adapted to turn freely on the tube. Above this Wheel s a sleeve o is detachably secured,

.by a set-screw u or other means, to the tube c, said sleeve havin ga lateral stud t, on which a bevel-wheel w is pivoted, which gears with wheel s and with another wheel ro, which is mounted on shaft j directly under cross-bar t', by which motion is transmitted from shaft j to can o, driving it reversely to the direction in which can g turns. The Wheel is represented as feather-keyed on the shaft, so as to be readily detached when desired.. Both cans are slotted in the cylinders, as at y, and perforatedin the bottoms, as at a', for free circulation of water. Can g has inwardly-projecting paddle-Hanges a', and can o has outwardly-projecting paddle-flanges b for effecting'lively circulation of water. Can o also has upwardly-projecting spurs o' of the bottom to prevent the dishes from sliding about on the bottom, and said can is provided with a removable partition d about midway of the top and bottom for separating the charge of dishes into two tiers, by which more effective action is attained. More of such partitions may be used, if desired.

The dishes are placed in the inner can o while the tub is empty, and when properly charged Water is let into the tub and the cans are set in motion at a rapid rate, whereby through the reverse movements of the two cans and the paddle-flanges violent and effective currents are induced well adapted for quickly and effectively cleaning the dishes. After Washing, free circulation of air for drying the dishes is obtained by exterior standpipesf, opening into the tub near the botd tom, and others, g/, connected higher up, as indicated by the dotted circle g2, Fig. 1, through which further rotation of the cans induce active currents, which dry the dishes quickly.

A guardtube 7L is provided to cover tho IOO standing tube c and rotate with the can to prevent the dishes from rubbing against the said tube c, by which they might be injured, and it serves for the upper edges of some dishes to rest against it, the lower edges be# ing set inside of the spurs c when it may be desired to so arrange them. For simpler machines the outer can may be omitted.

When it is desired to separate the parts for 3 effectively cleaning the machine, the cover d will be removed, cross-bar t taken off, Wheel and sleeve udetached, can o lifted out, and

ing cans located Within the tub and one Within i the'other, stand-tube'on which 'said cans-are i centered, driving-shaft located in the standtube'and connected at the top Wit-h ythe outer can for rotating it, the gear-train of bevelwheels and the intermediate wheel-supporting sleeve on the stand-tube connecting the inner tank with the driving-shaft, and means for lactuating said driving-shaft.

3. In a dish-Washing machine, the combination of the stationary tub, reversely-rotating cans located Within the tub and one Within the other, stand-tube on which said cans are centered, driving-shaft located in the standtube, and connected at the top With the outer i can '-for rotating it, the gear-train of bevel- Wheels and the intermediate wheel-support; ing sleeve on the stand-tube connecting the inner tank with the-driving-sh aft, Vmeans for actuating .the driving-shaft, andthe paddle-A an-ges -of 'the cans intermediate of the respective cylinders ofthe cans, said-cans-having Ithe slots and perforations'forthecirculation of lthe Water.

Signed by me this 30th day of September,

EDWARD SA-NDSTROM. Witnesses:

CHARLES G. GUYER, A-KE 'DIsEn-L.

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