US2630813A - Spray manifold for washing machines - Google Patents

Spray manifold for washing machines Download PDF

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US2630813A
US2630813A US3465548A US2630813A US 2630813 A US2630813 A US 2630813A US 3465548 A US3465548 A US 3465548A US 2630813 A US2630813 A US 2630813A
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machine
spray
water
lid
manifold
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Charles A Murdoch
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Charles A Murdoch
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/14Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • A47L15/16Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber with rigidly-mounted spraying devices

Description

March 10, 1953 c. A. MURDOCH 2,630,313

SPRAY MANIFOLD FOR DISHWASHING MACHINES Original Filed May s 1935 5 Sheets-Sheet 1 Q L J /4 I I2 I26 80 ii 4 2i )4 154 l 5| INVENTOR. (War/e5 6? Mara och ATTORNEY.

'5 Sheets-Sheet 2 C. A. MURDOCH ATTORNEY.

SPRAY MANIFOLD FOR DISHWASHING MACHINES March 10, 1953 Original Filed May 8,

March 10, 1953 c, MURDQCH 2,630,813

SPRAY MANIFOLD FOR DISHWASI IING MACHINES Original Filed May a, 1955 5 Sheets- Sheet s INVENTOR. (bar/es 4 Murdoch BY j 7 ATTORNEY.

March 10, 1953 c. A. MURDOCH 2,630,813

SPRAY MANIFOLD FOR DISHWASHING MACHINES Original Filed May 8, 1935 5 Sheets-Sheet 4 har/es 4. Murdoch ATTORNEY.

March 10, 1953 c. A. MURDOCH 2,630,813

' SPRAY MANIFOLD FOR DISHWASHING MACHINES Original Filed May 8, 1935 5 Sheets-Sheet 5 Ij Zig. 6.

muwnuu I INVENTOR. (/lar/es A4. Murwc/Y ATTORNEY.

Patented Mar. 10, 1953 UNITED STATES PATENT OFFICE Substituted for abandoned application Serial No. 20,307, May 8, 1935. This application June 23, 1948, Serial No. 34,655

1 Claim. 1

This application is a substitute application for my abandoned application filed May 8, 1935, Serial No. 20,307 abandoned on May 19, 1937.

My invention relates to a washing machine having general utility and occupying the space usually occupied by one unit alone.

My washing machine has many uses in both the household and semi-commercial fields. In the household, the mechanical unit functions to wash the table dishes, silverware, glassware, and also the pots and pans used in cooking, in a most thorough, efiicient and speedy manner. In addition, the machine is especially well adapted to thoroughly and efiiciently wash vegetables, salad greens, and the like. Further uses may be mentioned such as the ready use of the machine for the home preserving and canning of fruits and vegetables; the use of the lid either to heat plates or to keep food warm temporarily, or the reverse, to use the lid as a cold and cooled surface when needed for cooling dessert dishes or for pastry making, and the like. In the semi-oommercial field, among the uses that readily suggest themselves for this same machine are, in hotels, as a small silverware washer, and for the washing of the very fine glassware and chinaware services used on special occasions; in dairies and other places, the machine is excellent as a bottle washer; in hospitals, the machine is'excellent for the sterilization of surgical instruments and other equipment used repeatedly.

I have devised a small, compact machine that may be produced in quantity and sold in the foregoing fields without production line changes, and with it all the machine is thoroughly efiicient, very simple in its mechanical construction, very easy to assemble and also to repair, should that become necessary, and finally a machine that is fool proof.

My invention lies in not only the broad conception of the general utility machine but also in numerous individual features hereinafter described and the assemblage thereof into an operative combination to produce the new and improved results which I obtain in my washer.

Further objects of my invention will be apparent from the following specification taken in conjunction with the accompanying drawings wherein Figure 1 is a front elevation of the machine of my invention with the drain removed from its intended location on the machine and shown in section.

Figure 2 is a plan view of the machine with the lid or cover removed, and also with the screens removed.

Fig. 3 is a vertical section in a plane substantially on the line 33 of Fig. 2.

Fig. 4 is a side elevation of the machine looking from the right hand side of Fig. 2, with parts broken away.

Fig. 5 is an enlarged side elevation of the casting comprising one-half of the pump housing, the dual inlet passages thereto, and the valve control therefor, parts being broken away and shown in section to facilitate the illustration.

Fig. 6 is a plan view of the casting of Fig. 5.

Fig. 7 is a rear elevation of the casting of Fig. 5.

Fig. 8 is an enlarged detail of the valve plate; and

Fig. 9 is a plan view of the bottom stationary spray manifold shown in Fig. 3.

For most of the mechanical washing operations I prefer to use forceful, finely divided, spray jets. These may be obtained in a variety of ways readily interchangeable by a simple withdrawal and insertion of the several attachments. In Fig. 3 I have shown stationary spray manifolds at the top and bottom of the tub with a valve enabling the users to have both or only one of the jets in operation. In Fig. 2 there is shown an attachment for securing a vortex water action in place of the bottom spray. The top spray carried by the cover or lid is not present in the particular illustrations of this figure, but it could be in place when the machine was completely assembled, so that there is provided the combined spray and vortex washing actions. The top and bottom sprays are balanced so that there is a minimum of danger .of breakage of even the thinnest glassware.

The purpose of this invention as applied to household machines is to provide the housewife of ordinary means with an electrical appliance for the home that contains the most essential features of combined usefulness in a single unit with a minimum of moving parts in a machine of simple design that can be changed from one purpose to another by a person by the simple manipulation of the hand or fingers without the aid of tools or special mechanical knowledge. It fulfills all the requirements of the average family, it can be plugged into the wall base the same as the other household appliances; it has one trap connection to the waste line sewer; one hot and cold water connection, and is regularly fitted with connections for three auxiliary means of heating the water required for household use in the kitchen. The top of the machine is fiat, smooth and of ample size to be used to warm or chill the dishes as required, or keep food warm; it can serve the purpose of a cold marble slab to roll French pastry or puff paste, by simply turning on the cold water into the sink, adding a few ice cubes from the refrigerator and starting the motor for a few seconds whereupon the lid table will take the temperature of the contents of the sink; the reverse is true when hot water is used to convert the top into a hot plate warmer; and the lid being formed with a removable spray insert in the hollow lid forms an air space between the metals which precludes sweating of the top section of the lid which always remains dry whether used hot or cold. The body of the machine is shaped like the ordinary laundry tray and can be so used without in any way impairing the sanitary features as a dishwasher and sterilizer if so desired, there being no mechanism on the inside of the tub, and the floor of the machine is level and smooth as an ordinary laundry tray. The sump or wash water reservoir is situated under the floor level and is fitted with a double screen. The bottom screen isdeep and extends the full length of the sump and holds the sediment and food particles washed from the dishes, and the top screen is also perforated with much larger holes and is also used for the purpose of maintaining the floor level of the machine and preventing injury to the finer meshed screen at the bottom when heavy articles such as. pots and pans, mixing machine parts, etc., are put into the sink for cleansing purposes, or to soak as the case may be.

A further purpose of this invention is to provide double reservoirs for holding the wash and rinse waters which can be emptied into a common connection at the axial center of the pump. The outlet of each reservoir is controlled by manipulating a slide bar valve which opens the one and closes the other. The rinsing ismdone by pump means with the same pressure as the washing, and is entirely independent of high or low city water pressure insuring proper and efiicientrinsing means with water that has not become contaminated by coming in contact with the body of the machine that has previously held the wash water. This method has also the advantage of thoroughly cleansing the. pump and circulating mediums which are emptied ofall contaminating influences by the first flush of fresh hot-water therethrough which is expelled over the dishes and sides of the machine and is not'recirculated over the dishes a second time, so that when the operation is over any water left in the pump is fresh clean water.

Water is delivered from the pump through the discharge pipe, the feed pipe 34, and the discharge'outlets 32 and 33 into the interior of the tub II. The discharge outlet 33 communicates with the interior of the upper spray manifold iii.

The manifold 6| has side walls 62, which fit against the depending flanges l3 of the cover M, tapering inner walls 63, which extend upwardly and inwardly from the bottom of the wall 52 to form a pocket inside the manifold, and extend into a plate 64, which is spaced from the inner surface of the lid l4 and is provided with a series of grooves 65. The grooves 65 have perforations 65', as shown in Fig. 3, so that theyin fact constitute spray pipes. It will be noted .that the spray holes project sprays. directly downward an'dalso toward the right andleft in. Fig. 3..at about a. 30 angle. and. they are so interspersed in the several corrugations .65 that all surfaces and areas withinthe-tuhl l iarecoveredby the spray jets. The manifold 6! is secured to the lid M by any suitable means, so that it may be readily attached and detached.

The depending flange 13 of the lid H! has an aperture 66 therein and the adjacent side wall 62 of the manifold has a registering opening therein to receive the projecting end of the discharge outlet 33 whenever the lid M is lowered into the position shown in Fig. 3. In this position a water tight connection is formed so that the water delivered under pressure from the pump is forced through the spray manifold and discharges through the spray openings into the interior of the machine. When the lid 14 is raised to open the machine for access to the interior of the tub, as shown in Fig. 4, the connection from the discharge outlet 33 to the spray manifold 6! is broken automatically. By having this connection at the rear of the machine adjacent the hinged edge of the lid M, the spray manifold drains quickly and readily through an opening 56, the drain being to the interior of the tub H. Thus, not only is the top spray manifold automatically moved out of the way permitting free and easy access to the interior of the tub, but it is absolutely certain that there will be no spray or splash which will get outside of the tub whenever the lid is opened, even if opened accidentally or unintentionally, while the pump is still operating.

The bottom discharge outlet 32 is for use with a variety of spray and other attachments to be located at the bottom of the machine, these various sprays and attachments being entirely interchangeable at will and by a simple and easy lateral movement.

At times it may be desirable to use the bottom spray only (or no spray in the case of some other attachment being made to. the lowermost dis charge outlet 32). Accordingly, I place in the feed pipe 34, between the discharge outlets 32 and 33, a cut-off valve which is adapted to shut off the supply of water tothe upper discharge outlet 33.

In order that this valve may be operated by means easily accessible to the user of the ma-; chine, a control lever is placed at the front of the machine which is mounted on a rod 96, extending rearwardly along the side of the machine beyond the rear thereof where a bifurcated crank 91 is fastened. The crank 91 is connected by means of the link 98 to the valve actuating lever 99. As the lever 95 is turned, the valve is opened or closed as the case may be. Of course, when the valve is closed the full force of the water delivered from the pump is upon the water ejected from the lower discharge nozzle 32 and thus the spray or other attachmentat that point, delivers a much more forceful water jet.

At times it may be desirable to providestationary top and bottom manifolds operating in combination. In Fig. 3 there is shown the sta-: tionary tub manifold 6i heretofore described, and a stationary or fixed spray bottom manifold Hll. This stationary spray bottom manifold I0! is formed of a pair of heads [02 respectively located at the front and back of the tub and between which extend a plurality of spray pipes I03. The rear header I02 isprovided with an outlet connection Hi4 so that the spray manifold has a slip fit in the discharge outlet 32 of the machine, as is illustrated for the spray mechanism in Fig. 4. In order to insure the maintea qeb h pra ennels wp i os tion, a pivoted latch I05 is mounted ,upon.jthe forward manifold I02, which latch engages the 5. interior of the forward wall of the tub II when the manifold IN is in operative position. The front header I82 is provided on its under surface with feet (not shown) and each of the headers I02 is provided on top thereof with basket supports I05.

From Fig. 3 it will be noted that each of the spray pipes I03 is provided with apertures, the apertures being located at a 30 angle on opposite sides of the vertical center, this being the proper angle for insuring that the entire body of the tub II is covered by the spray jets from the manifold "II. It will also be noted that the spray pipes I83 are interspaced between the corrugations 65 of the upper spray manifold 6I.

As has heretofore been intimated, it may be at times desirable to secure a vortex action within the tub I I. For this purpose, there is substituted for the bottom spray manifolds heretofore described the nozzle I86 (Fig. 2).. This nozzle has ordinary bayonet and slot connections with the bottom discharge outlet 32 to position the nozzle at whatever angle desired. In the position shown in Fig. 2 the water will enter the tub II at the bottom, and swirl around so as to form a vortex about a substantially vertical axis passing through the tub. If desired, this attachment I86 may have a second bayonet and slot connection with the discharge outlet 32 with the opening of the nozzle upward, so that a vortex action is obtained around a substantially horizontal axis. Obviously, this angle of the vortex can be varied anywhere that may be desired.

It has been found in practice that this vortex action is'very useful in a variety of instances such as washing of small silverware, pots and pans, the washing of vegetables, etc.

The vortex action described can be obtained with the valve 9| closed and the machine lid opened or closed, or this action may be obtained in conjunction with the top spray by opening the valve 9|, which condition of operation has been found to be highly desirable in the washing of lettuce, spinach, or leafy vegetables.

The drain outlet 35 is closed by a combined drain valve with plural overflow means I29 and I32 to maintain the liquid height at either of two desired levels, which valve comprises the portions I2I, I22, I23, I24, I25, I26, I21, I28, I30, I3I, I33, I34 and I35.

I have heretofore explained the dual feed to the pump through the U-shaped tube 28 connected to the openings 22 from the washing water sump 2I and through the opening 23 from the rinse water tank I8. I automatically close the inlet from the tank I8 when the machine is performing its washing function, and automatically close the opening 22 and open the connection 23 to the rinse water tank I8 when the rinsing operation is to be performed.

On the bottom of the plate MI is cast a rack with which meshes a spur gear I44 by means of which the plate MI is moved. The gear I44 is mounted in the pocket between the two legs of the U passage 28 and is provided with an extension I46 which serves to space the gear I44 from one side of the pocket. Extending into the pocket from the opposite wall is a socket I41 which receives one end of shaft I48 on which the gear is mounted and which extends outwardly to a position adjacent the opposite side of the gear I44.

The shaft I48 extends outwardly through an opening in the casting 21 where is provided a stuffing box packing of any suitable construction indicated generally at I49. On the outer end This shaft extends outwardly adjacent the front of the machine and there has mounted a wheel or lever I54 by means of which the operator moves the valve plate I4 I. V Y

The normal position of the valve plate I is with the opening 22 open and the opening 23 closed. In this position the pump will be supplied with wash water which will be recirculated by the pump. After the washing operation is completed the wash water is drained oif by opening the drain 35. 7

When the operator wishes to rinse the dishes or other articles being washed, she rotates the handle I54 to move the valve plate I4I to close the opening 22, whereupon the rinse water will be admitted to the pipe 28 and to the pump 3I, thereby rinsing the dishes in the machine under the same pressure as the washing operation, as heretofore described. I

In rotating the shaft I53, the operator places under tension the spring I55 one end of which is fastened to the shaft I53 and the other end of which is secured to the mounting bracket I56 for the shaft I53. Thus when the rinsing operation is completed (which in this machine requires only a few seconds), the operator releases the wheel I54 and immediately, under the action of the spring I55, the valve plate MI is returned to its normal position with the opening 23 from the rinse tank I6 closed.

The motor 41 is controlled by means of the switch I6I which is mounted on the side of the tub II. Inasmuch as it is desirable to insure that the pump shall not be working whenever the lid I4 is opened, I provide the following automatic arrangement.

The switch I6I is mounted in a box I62 which has an opening in alignment with the spring pressed button I63 of the switch. Mounted above the opening in the box I62 is a tube I64 in which operates a plunger I65, both the tube I64 and plunger I65 extending upwardly to the top of the tub II. The plunger does not extend to the top of the tube I 64, the purpose of this arrangement being to prevent accidental starting of the machine while the lid is still open. The lid I4 carries on the side thereof a downwardly projecting lug I66 which is adapted to enter the tube I 64 and engage the upper end of the plunger I65 when the lid is closed.

I have found it desirable to provide an arrangement that will require the operator to definitely seat the lid I4 in order to start the operation of the motor. For this purpose, I have provided a pocket I61 in the tube I64, in which pocket is housed a spring I68. The plunger I65 carries a collar I69 which engages the spring I68. The spring I68 is of sufiicient strength to support the weight of the lid I4 so that a simple closing of the lid I4, or even an accidental dropping thereof will not be sufiicient to operate the motor switch I6I. However, when the operator separately and specially presses down upon the lid I4 sufficiently to overcome the tension of the spring I68, the plunger I65 will be pressed downwardly far enough to throw the switch I6I and start the operation of the motor. The upper end of the tube I64 and the plug I66 are so designed that the frictional fit thereof will be suihcient to prevent the spring I68 from lifting the lid once it is pressed home.

chine is operating as ail-washing machine, it'is only necessary for the operator to disconnect the current to the motor 475' This may be ac complished through anyof the ordinary wall switches; or-the-plug llfl may be of the ordinary detachable type and may be disconnected to break the connection betweenwthe switch 16 i and the motor- 47;

111F218. 1' there-is shown-a second-electrical heater H7 which heater isin the largertank (8 that 1':- haveheretofore indicated to' be used forthe-rinse Water; If the house shouldi not be provided with an adequate supply of hot water; then this heating'element H7- could-be used tofheat the water in the rinsetank during the preparation for and the washing of the dishesor other articles.

Modifications may be made in the arr-angement-and=location-of parts Within the spirit and scope-of myinvention, and such modifications are intended to be covered bythe appended claim,

Iclaim:

A washing---machine comprising a body; and hinged'thereon, a spraymanifold consisting of a; hollowshell having deep depending side wall pockets with rows of shallow perforated corrugations extending therebetween, the shell having-a watertight -connectionwto the lid was to complete the-manifold, a-w'ater inlet connection to-safd manifold; anda motor-driven pump connected to the water inlet and edaptedto supply water thereto.

CHARLES A. MURDOCH.

8: REFERENCES, CITED.-

The following references are of recordin the fileof this patent:

UNITED STATES- PATENTS Number Name Date 193,222. Buell July 17, 1877 555,570 Finney Mar. 3, 1896' 950,885 Wood Mar 1', 1910 030,139- Steer June 18, 1912 1,082,259 Baumilleret a1.- Dec. 23, 1913 1,172,390. Murray Feb. 22, 1916 1,414,634 Fassio May-2, 1922 1,420;418 Dow June-20,1922 1,447,305, Hank Mar. 6; 1923 1,628,118 Coles May 10, 1927 1,645,815 Murdoch Oct. 18, 1927 1,645,816. Murdoch Oct; 18,192! 1,645,869 Murdoch Oct; 18,- 1927 1,679,172 Pieters' 1- July 31; 1928 1,717,149 Ffassio June11, 1929 1,724,910. Cromwell Aug. 20, ,1929 1,737,794 Henderson Dec. 3, 1929 1,848,393 Spielman Mar; 8, 1932 1,916,806 Myrick July 4, 1933 1,938,302 Snyder Dec. 5, 1933 1,961,548 Caise June 5, 1934 1,983,390 Mueller Dec. 4, 1934 1,987,865 North Jan. 15, 1935 2,013,387 Johnston Sept. 3, 1935 2,017,677 Webb Oct. 15, 1935 2,024,952 Snyder et a1. Dec. 17, 1935 2,044,132, Stoddard June 16, 1936 2,051,233. Webb Aug. 18', 1936 2,440,134 Zademach ,et a1. Apr; 20, 1948

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5927309A (en) * 1996-12-20 1999-07-27 Premark Feg L.L.C. Continuous-flow ware washing apparatus
US20040118433A1 (en) * 2001-02-15 2004-06-24 Bigott James W. Automated kitchenware washer
WO2005034712A1 (en) 2003-10-08 2005-04-21 BSH Bosch und Siemens Hausgeräte GmbH Dishwasher with integrated spray channels
US20050257810A1 (en) * 2001-02-15 2005-11-24 Bigott James W Kitchenware washers and related methods
US20060237047A1 (en) * 2001-02-15 2006-10-26 Bigott James W Kitchenware washers and methods of manufacturing the same
US20060237046A1 (en) * 2005-04-22 2006-10-26 Bigott James W Kitchenware washers and methods of manufacturing the same
US20060237045A1 (en) * 2005-04-22 2006-10-26 Bigott James W Kitchenware washers and methods of manufacturing the same
US20060254619A1 (en) * 2005-04-22 2006-11-16 Bigott James W Commerical kitchenware washers and related methods
US20140261584A1 (en) * 2013-03-15 2014-09-18 Sears Brands, Llc Fixed full coverage wash system for dishwashers
US20160022114A1 (en) * 2014-07-25 2016-01-28 Vaclensa Plc Cleaning apparatus and associated methods
US9265400B2 (en) 2005-04-22 2016-02-23 Duke Manufacturing Co. Commercial kitchenware washers and related methods

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Cited By (21)

* Cited by examiner, † Cited by third party
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US5927309A (en) * 1996-12-20 1999-07-27 Premark Feg L.L.C. Continuous-flow ware washing apparatus
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