US1927943A - Dishwasher - Google Patents

Description

J. E. LONG Sept. 26, 1933. I

DISHWASHER Filed Jan. 28, 1929 -2 Sheets-Sheet l INVENTOR John E. Lqny.

ATTO NEY J. E. LONG Sept, 26, 193",

DISHWASHER Filed Jan. 28,1929 2 Sheets-Sheet 2 IN VEN TOR Patented Sept. 26, 1933 msrrwasnurt John E. Long, Multnomah, Oreg.

Application January 28, I929. Serial No. 335,488

5 Claims.

The principal object of my invention is to provide dish washing apparatus which is conveniently operated, simply constructed and inexpensively manufactured, and which is specifically devised to be used in conjunction with an open-top receptacle for holding the dishes to be washed, the dish washing apparatus being carried wholly by a member constituting a cover for such receptacle.

A further and more specific object of my invention is to provide a perforated basket-like receiver adapted to be arranged within the receptacle, such receiver being provided with devices for arranging and holding the dishes in position in which they can be washed effectively. Such basket-like receiver is separate from the receptacle and thus when such dishes have been washed they may be lifted directly out of such receptacle without being removed from such receiver and will be held in position so that the excess water adhering to them will drain ofi.

A further object of my invention is to provide washing apparatus of this character with power mechanism capable of producing agitation of the washing liquid in the receptacle, and power for ,of, such power takeoff devices further being devised to permit variable rates of operating speed for such auxiliary units.

A further object of my invention is to provide means in conjunction with such washing apparatus by which a supply of soapy material is arranged to be acted upon by. a supply of water to provide soapy liquid for washing" such dishes.

Further features of my invention and the details of construction and the mode of operation are hereinafter described with reference to the accompanying drawings, in which:

Fig. 1 is across section thru such washing apparatus;

Fig. 2 is a horizontal sectional view showing the details ofthe power takeoff devices for driving auxiliary units;

Fig. 3 is a vertical sectional view showing said power take-off device;

Fig. 4 is a perspective view of the agitator of such washing apparatus with a portion of the wall broken away to show details of construction thereof;

Fig. 5 is a bottom view of such agitator taken in the direction of the arrow 5 in Fig. 4;

Fig. 6 is a sectional view taken substantially on' the line 6-6 in Fig. 1 showing the basketlike receiver for holding the dishes.

My improved washing apparatus is adapted tov be housed within an open top receptacle a which is preferably provided with a valve-operated drain dlocated at its lowest point. Within such receptacle a basket-like dish receiver 0 is adapted to be arranged, such receiver extending substantially the entire height of the receptacle a. In such receiver guides b are arranged for holding the dishes in place so that an agitator e, in one type of my invention, may throw water onto such dishes in the most efllcient manner. Such agitator e is driven by a motor I. preferably electrical, such agitator being removably connected to such motor by a coupling g.

The receiver 0 is formed so as to provide a central space 0' within which such agitator openates and such centrally formed portion 02 extends substantially the entire length of the agitator to prevent dishes from striking such agitator and thus interfering with its operation. When a ro-= tary type of agitator is used, devices, such as ,a spaced guide members 03, are arranged in such receiver to hold the dishes in vertical planes spaced apart and preferably extending tangential to the path described by the vanes of the agitator. In any event, such dishes or the major portion thereof, are arranged substantially radial from said centrally formed portion 02 towards the rim of such basket-like container. Such guide rods 03 are spaced a substantial distance from the floor c4 of such receiver'to hold such dishes securely.

I further provide a pocket 05 defined by two of the radiating rods 03 and the connecting element 06, in which silverware and the like can be arranged on end. Inasmuch as dishes and other utensils commonly used vary substantially in size and dimensions, I provide a portion of such receiver with devices tor positioning such occasional dishes as bowls and platters. As is shown in Figs. 1 and 6, this portion 01 the receiver is arranged with a series of sinuously curved members c7 forming vertical pockets or recesses for engaging the edges of such dishes. Such pockets or recesses are arranged quite closely together and such members extend substantially at an opposite tangent to. the members 03, as is shown in Fig. 6, so that such dishes carried in such pockets or recesses will extend at the same tangent as the dishes held by the members 03, this being shown in dotted outline in Fig. 6. The members c7 defining such pockets or recesses are preferably made of flexible but resilient wire so that such members 07 can be distorted slightly shell e8 carrying outstanding vanes 62 and e3.

' to be dissipated and th 'joints about the mouthiof the receptacle are not The vanes e2 are substantially flat and extend radially from the axis of rotation of such agitator so as to throw water with which they engage outwardly in planes normal to such axis. The vanes e3 are curved or cupped slightly so that portions thereof extend angularly to such axis of rotation and thus water engaged by such vanes e3 will be thrown, in part, out of such normal planes and upwardly therefrom.

The water is thus discharged from such vanes by displacement and centrifugal forces and tends to create a region of decreased pressure within the hollow shell of such agitator. Adjacent the base of such vanes a series of perforations e4 are arranged, thus causing circulation of the water contained in the receptacle a, the water being drawn thru the open mouth e5 of the agitator and forced outwardly thru the perforations e4 bythe rotation of such agitator. ,To increase such circulation, I provide a series of propelling vanes e6 about such open mouth c5 and such vanes are inclined and proportioned relatively to the portions of such agitator to throw or force liquid into the hollow body of such agitator.

' Preferably at the upper portion of such agitator I provide a soap chamber separated from the remainder e? by a screen-like or perforated partition e11. In such chamber a supply of soapy material, diagrammatically shown in Fig. 4, can be held and the ascending stream of water within such agitator will be forced upwardly from the chamber e7 to produce soapy solutions and suds which will be forced outwardly thru the perforations e9, which are screen-covered to prevent the inefficient discharge of such material from the soap chamber. I provide a filling opening into the soap chamber, which opening is normally I closed by a plug e10, as shown in Fig. 4.

The motor f and the agitator e are mounted h, primarily arranged to provide washing liquid for the receptacle a so that the liquid within such receptacle can be drained thru d and fresh liquid be replaced thru the connection 1'. For example, if it is desired to rinse the dishes with fresh clean water, this may be done in this manner. The opening 2' serves a further purpose,

however.. The reiatively greatspeed of the agi-' tator e builds up increased pressure within the receptacle a and under the cover h, which tends to discharge foamy ,sudsthru' the connection between the cover and the receptacle. -The filling opening 1' permits such increased pressures packing or close-fitting required. The joint between the two halves of the casing preferably is made, as is shown in the drawings, with an overlapping connection and the marginal edges of the two halves terminating in complementary, oblique. angular portions adapted for mutual engagement. This provides said casing adapted to contain adish rack and a a close fitting joint, which is not disturbed by pressure from within the casing, for the reason set out above. The provision of upwardly facing or cupped blades, and the fact that the motor is carried by the upper half of the casing, tends further to hold the cover firmly in place and said overlapping joints in engagement.

Power is supplied to the member 1, if it is an electrical motor, thru an electrical plug connection 7'. Preferably there are a series of connections to such motor having varying resistances so as to give such motor corresponding varying speeds. This being common in the art, it is therefore not shown.

The shaft of such motor f extends upwardly thru such motor, and a gear case It is arranged on the top of such motor housing. A central shaft k in such housing engages such motor rounding their drive shafts respectively, such springs tending to move such gears laterally out of mesh with the drive pinion I02 and hold them in the position shown in Fig. 3. 'Theupper cnds of the shafts k7, k8 and k9 are providedwith clutch ends, as shown in Fig. 2, adapted to engage with the flexible shaft Z for the auxiliary devices .driven thereby. Such shaft is incased within a fitting m adapted to be engaged with lugs n upon the upper surface of the gear case k. Such fitting m and the lugs n are proportioned and arranged relatively so that when they are in engagement the shaft 1 is forced downwardly against the shafts I07, I08 and k9, with which such flexible shaft Z is adapted operatively to engage, with suflicient force to compress the spring k6 surrounding that particular shaft and move the gear carried thereby into engagement with the pinion k2 so that a complete operative connection is made between the shaft of the motor J and the flexible shaft 1 for the auxiliary devices.

I claim:

1. In a dishwashing machine, a casing comprising two complementary stacked halves, the entire side walls of said casing flaring outwardly; from the top and bottom portions thereof to the points at which the halves meet, the lower half of body of liquid, a rotatable washing device depending into the lower casing half and said dish rack, said washing device comprising an agitator head adapted to circulate said body of liquid thru said rack and along the casing sides, the Hare of the casing directing said washing liquid vertically thereof and about said rack and means to rotate said washing, device. A

2. In a dishwashing machine, a casing compris 1 ing two complementary stacked halves, the en: tire side walls of said casing flaring outwardly from the top and'bottom portions thereof to the points at which said halves meet, a portion of the upper half of said casing depending centrally into the lower casing half and said dish rack,

said washing device comprising an agitator head adapted to circulate said body of liquid thru said rack and along the casing sides, and the flare of the casing directing said washing liquid vertically thereof and about said rack.

3. In a dishwashing machine, a casing comprising two complementary stacked halves, the entire side walls of said casing flaring outwardly from the top and bottom portions thereof to the points at which said halves meet, a motor carried by the upper casing half, the lower half of said casing containing a 'dish rack and adapted to contain a body of liquid, a rotatable washing device depending from said motor into the lower casing half and said dish rack, said washing device comprising an agitator head adapted to circulate said body of liquid thru said rack and along the casing sides, the flare of the casing directing said washing liquid vertically thereof and about said rack, said dish rack provided with a vertical perforated well extending about said washing device and upwardly to a plane adjacent the top of said washing device, said agitator head provided with a cupped active surface facing upwardly, and adapted in operative position to be immersed in said washing liquid.

4. In a dishwashing machine, a casing comprising two complementary stacked halves, the entire side walls of said casing flaring outwardly from the top and bottom portions thereof to the points at which said halves meet, a motor carried by the upper casing half, the lower half of said casing containing a dish rack and adapted to contain a body of liquid, a rotatable washing device depending from said motor into the lower casing half and said dish rack, said washing device comvertical angularity, one blade having an active surface facing upwardly, and adapted in operative position to be immersed in said washing liquid.

r 5. In a dishwashing machine, a casing comprising two complementary stacked halves, the

entire side walls of said casing flaring outwardly from the top and bottom portions thereof to the points at which said halves meet, a motor carried by the upper casing half, the lower half of said casing containing a dish rack and adapted to contain a body of liquid, a rotatable washing device depending from said motor into the lower casing half and said dish rack, said washing device comprising an agitator head adapted to circulate said body of water thru said rack and along the casing sides, the flare of the casing directing 'said washing liquid vertically thereof and about said rack, said dish rack provided with a vertical perforated well extending about said washing device and upwardly to a plane adjacent the top'of said washing device, said agitator head provided with radial blades of different degrees of vertical angularity, and adapted in operative position to be immersed in said washing liquid. .110

JOHN E. LONG.

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