US2266205A - Cleaning apparatus - Google Patents

Cleaning apparatus Download PDF

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US2266205A
US2266205A US2334447A US23344738A US2266205A US 2266205 A US2266205 A US 2266205A US 2334447 A US2334447 A US 2334447A US 23344738 A US23344738 A US 23344738A US 2266205 A US2266205 A US 2266205A
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valve
cleaning
dispenser
chamber
liquid
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US2334447A
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Donald P Hunter
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Turco Products Inc
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Turco Products Inc
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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
    • A47L15/42Details
    • A47L15/44Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4436Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants in the form of a detergent solution made by gradually dissolving a powder detergent cake or a solid detergent block
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/2496Self-proportioning or correlating systems
    • Y10T137/2559Self-controlled branched flow systems
    • Y10T137/2564Plural inflows

Definitions

  • This invention relates to improvements in cleaning apparatus, and particularly special purpose cleaning machines such as dish-washing machines of the type now in use by many restaurant establishments for cleaning large quantities of dishes, wherein a dish cleaning chamber is provided and the dishes washed and rinsed therein by means of water circulatory systems having as a necessary adjunct an apparatus for supplying both water containing a cleaning compound for dissolving and removing grease, food particles, etc., from the dishes, and also including means for replenishing any amounts of such cleaning compound lost or weakened by dilution during a cleaning operation, so as to keep such solution at proper strength at all times.
  • Another important object of the invention is to provide a cleaning apparatus equipped with a special type of dispenser or mixing and storage supply tank for concentrated cleaning material solutions or the like, which apparatus shall be of simple construction and positive and eiiicient of operation, composed of a minimum of parts, and less likely to get out of order than devices heretofore used for this purpose.
  • a further important object of the invention is to provide a cleaning apparatus composed of a number of associated elements which are readily detachable and capable of application to many other standard or special type cleaning devices, and certain of which are readily adaptable for use in connection with many other types of equipment, such as dish washing machines, laundry machines, automotive parts, cleaning equipment, bottle washing machinery, and many other de vices, as well as liquid and air and other supply lines and circulatory systems in general.
  • Another and further object of the invention is to provide an apparatus having as an essential element thereof a storage supply container for concentrated cleaning solution, which container shall also perform the function of mixing the cleaning solution and dispensing the same, and which may be positioned either adjacent to, disunits of the apparatus to which it is connected, as for purposes of convenience or accessibility, without impairing the eflicient operation of the apparatus as a whole or any individual unit thereof.
  • a still further important object of the invention is to provide, in combination with a water or other supply line or circulatory system of the general type above referred to, a novel flow control mechanism for automatically controlling the flow of a given element from point to point in a supply line or circulatory system where such flow is desired simultaneously and in coordination with the flow of a second supply or circulating medium, but entirely separate and independent of contact therewith.
  • Anotherand still further important object of the invention is to provide a flow control mechanism of novel construction designed primarily for use in connection with water circulatory systems or the like, but which shall be equally well adapted for use with any supply lines carrying air, gas, liquid, steam, or other elements or combinations thereof, and which mechanism shall be outstandingly eflicient when used in connection with apparatus requiring an accurately measured flow of a given element which must be automatically controlled and maintained constant throughout long operating periods without adjustment.
  • a further object of the invention is to provide a circulating or dispensing apparatus utilizing liquid or other substances or elements as the medium circulated or dispensed, wherein such substances are treated or mixed with other substances, and wherein the treating medium is drawn from a combination mixer and supply tank and carried therefrom by means of water, air, or other elements, thesource of the carrying agent being separate anddistinct from that of the supply line or other apparatus to which it is related or connected, and wherein the flow of the substance through the mixing and supply tank is controlled automatically by means of a simple, readily attachable device.
  • Figure 1 is a vertical sectional view through a dish cleaning apparatus embodying my invention.
  • FIG. 2 is a top plan view of a solution mixing and storage supply container forming a part thereof.
  • Figure 3 is a sectional view taken on the line 3-3 of Figure 1.
  • Figure 4 isan enlarged longitudinal section through a flow control valve forming part of my invention.
  • Figure 5 is an enlarged longitudinal section through a flow control mechanism forming part of my invention.
  • the reservoir 20 be ing provided with a screened overfiowpipe 22 for controlling the level of the liquid contained therein.
  • Machines of this type are ordinarily equipped with a system of pipes comprising standard conduits with spray-heads, which are for the purpose of forcing the contents of the reservoir 20 upward by pumping or the like for spraying the dishes or other objects contained in the chamber it with cleaning solution, thus. removing any grease, food particles, or other matter from the surface of the dishes, the solution so used then gravitating back into the reservoir 2B for re-use or ultimate disposal through. the overflow pipe 22 or in some other manner.
  • a circulating device suitable for this purpose is shown at A in Figure 1.
  • a spray line which is also positioned interiorly oi the device, for the purpose of spraying clear rinse water over the dishes in the chamber is following the initial cleaning operation above described.
  • such spray line usually consists of an ordinary water supply pipe 25 having a manually operable shut-off valve as preferably located exteriorly of the machine, the pipe being introduced interiorly of the machine as shown at 28 and terminating in a spray-head to having a series of jets 32 through which a spray of clear rinse water may be directed downwardly over the surface of the dishes as the second step of the cleaning process, such rinse water then passing by gravity into the reservoir 20, where it comes into contact with the cleaning solution, normally diluting the same and causing a portion thereof to. overflow through the pipe 22 and escape .through a waste-pipe 34.
  • a waste-pipe 34 A
  • water pressure indicator 35 may be mounted at a suitable location along the rinse line H to determine the water pressure.
  • My combination mixing chamber and dispenser from which such additional concentrated compound may be drawn comprises essentially a container 38 having a removable lid M, the under surface of which is provided with an integral flange or guide ring :22, the lid 4d being preferably tight fitting and the dispenser rendered watertight by the interpositioning of a gasket or the like :36 between container and lid, and some suitabl fastening means 36 may be provided for attaching the lid it securely over the mouth of the dispenser.
  • the dispenser 38 may be in the form of a simple hollow container having an inlet 68 the flow through which is controlled by a manually operable valve 50 connected to a supply line 52 carrying a substance such as water or the like.
  • An outlet 55 is provided in the dispenser and is preferably located near the top thereof so as to act as an overflow, and this outlet leads to the machine it by way of a section of tubing 55 which extends through the wall I? of the machine and has its terminus directly over the reservoir 20.
  • the container 38 is provided with a supply of soap powder or some other soluble cleaning compound in highly concentrated form, this cleaning compound becoming thoroughly dissolved by contact with the liquid entering the container through the inlet 58.
  • the resulting solution then flows out of the container and into the reservoir 20 through the tube 58 whenever the level of the solution in the container reaches the plane of the outlet 5 and so long as liquid continues to be admitted through the inlet 48.
  • a suspended soap container 84 composed of sidewalls 66 and bottom 88, the sidewalls 66 having screened openings I0, the bottom 88 being preferably spaced away from the floor element 64 is flared outwardly, extending over the wall 62 and continuing upward and outward interiorly of the dispenser to a point adjacent the upper edge of the outer wall thereof, where it may be secured by soldering or the like to prevent leakage, or arranged in some other manner to render the contact watertight or nonspilling, and, if desired, there may be a watertight seal effected between the upper edge of the wall 82 and the flared portion 12 by the use of suitable gaskets, or by soldering or the like.
  • the inlet 48 is formed interiorly of the container with an elongated tube 14 which leads directly into the central chamber through the wall 82, where its body is directed downwardly toward the floor or bottom of the container so as to provide for the utmost contact between incoming liquid and the lower portion ofthe contents of the compartment 04 as well as any undissolved soap which may have gravitated through the screened openings 10 and settled upon the floor of the container.
  • the installation is one in which the concentrate is delivered into the dish washing machine under pressure, since the location of the machine proper is above that of the concentrate dispenser 38.
  • This type of arrangement is highly desirable when it is more convenient to locate the dispenser 38 at a point removed from the machine I0 so as to make it more accessible to the operator attending to its refilling. It may, in fact, be located in a distant room or even on a different floor above or below that on which the machine I0 is located.
  • the dispenser 88 may also be used to supply concentrate for more than one washing machine or other apparatus, by simply providing each unit to be served with a similar line equipment to that illustrated in Figure 1, leading same to the dispenser 88, and providing the proper additional intake and outlet connections in the latter.
  • valve 50 which is manually operable and may be of the conventional type, such asa' needle valve or the like, which, when once set, will allow a predetermined rate of flow into the container 88.
  • the ordinary type of valve requires adjustment at short intervals because of the considerable variation in the flow of liquid therethrough due to corrosion of parts, etc.
  • I have provided a new and novel type of valve for this purpose which performs much more satisfactorily than a needle valve and requires little or no adjustment even after very long periods of constant use, yet maintaining the maximum uniformity of the fiow throughout any given period of operation.
  • This new device is best illustrated in Figure 4, and consists of the usual body 88 provided with an inlet port 90 and an outlet port 82, with the customary packing-nut 88 and stem packing 88 and fitted with a partially solid stem I00 to which is. attached a control handle I02, the stem I00 being suitably screw threaded for insertion into the body 88 in the usual manner.
  • the lower end I04 of the valve stem I00 is hollow and of reduced size, fitting snugly into the outlet channel 82, so as to provide a watertight fit along the interior wall of said outlet channel.
  • the hollow lower portion I04 of the stem I00 extends from a lower outlet orifice II2 through the narrow portion of the stem, and terminates at a point slightly above the shoulder IIO as shown at II4.
  • the hollow valve end I04 is drilled transversely to provide a small inlet orifice II6 which extends through the walls of the hollow stem portion I04 to the exterior surface thereof.
  • a counter-clockwise turning of the handle I02 will raise the location of the oriflce H8 and cause a partial opening of the valve as soon as said orifice assumes an open connection with the central chamber I08, as best illustrated in Figure 4. Further counter-clockwise turning of the handle I02 will obviously cause the orifice I I8 to assume a completely open connection with the central chamber I08, to provide the maximum amount of flow through the device, and thus providing a continuous passage for liquid from the intake port 90 to the outlet port 92, which 'may by this means .be effectively regulated as to flow, the diameter of the orifice II 6, of course, governingthe maximum flowof substances through the valve when the device is in open position.
  • the diameter of the orifice II 6 of course, governingthe maximum flowof substances through the valve when the device is in open position.
  • this same type of valve may serve equally well for lines carrying air, steam, gas, or other elements.
  • the rate of flow through the valve is governed by the area of the orifice H6 which is exposed above the shoulder I I0, and it has been found that this construction results in a more uniform and constant flow of substances, over considerable periods of time, especially, in small valves of the type used in connection with apparatus such as that hereinbefore described.
  • the liquid supply for the dispenser 38 may be tapped from any available supply line, as, for example, from the rinse water pipe 24 at a point anteriorly of the valve 26, thus creating a bypass flow through the dispenser 36, which mayv be manually controlled by a simple use of the valve 50, by means of ordinary conduit such as the element 52.
  • the rinse line 24 may be tapped on the discharge side of the valve 26, whereupon the solution replenishing process previously described will occur automatically each time the rinse line of the machine is operated by opening of the valve 26, and the delivery of cleaning solution into the reservoir 20 will continue for the exact period of time that the valve 26 remains open, and thus by a simple regulation of the amount of water circulated through the dispenser' 38 by such 'by-passing method, any washwater lost by dilution or overflow from the reservoir 20 will be completely replenished simultaneously with operation of the rinse line and between the heavy cleaning operations, which is the most suitable time for this purpose; It will, of course, be obvious that when a difierent time is selected for the replenishing operation, the liquid supply for the dispenser may be similarly tapped from other sources of supply.
  • My preferred construction of a mechanism of this type comprises a valve consisting of a T- shaped hollow member I20 having three communicating openings I22, I24, and I26.
  • openings I22 and I24 are interiorly screw threaded and adapted for connection to similarly screw threaded free ends along the pipe line 24 as best indicated at I28 and I30 in Figure 1, which arrangement forms a continuous passage into the machine I0 for liquid carried through the pipe 24.
  • the third opening I26 is outwardly directed and slightly enlarged, as best shown in Figure 5, and the walls thereof provided with an outwardly directed annular flange I32 formed exteriorly .of the opening I26 and at right angles thereto,
  • the flange I32 having a series of openings I34 therethrough for accommodatingscrews, bolts, or the like I36.
  • a second cylindrical member I38 having an opening I48 of substantially the same diameter and depth as the enlarged portion of the opening I26, and having a flange I42 with openings I44 corresponding to those in the flange I32, and in registration therewith.
  • a non-rigid disc I46 preferably formed of rubber composition or similar material, capable of forming a pliant diaphragm, this disc being of a diameter large enough to cover the entire open faces I26 and I40, and the disc is preferably perforated along its periphery with openings adapted to register with the openings I34 and I44, whereby the disc I46 is held in fixed position by .means of the bolts or screws I36, which are tightened to provide a perfectly watertight connection at this point.
  • the member I38 is formed with a continuous passage comprising a relatively small bore I46, a larger centrally located bore I50 of somewhat larger diameter, and an enlarged opening or inlet I52 which is exteriorly screw threaded to receive the similarly screw threaded end of a cap I54 having a central bore I56 beginning interiorly thereof with a recessed portion I58, and terminating exteriorly with an enlarged opening of inlet port I60 adapted for threadable engagement with the pipe line II8 by some suitable connecting means I62.
  • the opening I40 also forms part of the continuous passagejust described.
  • a transverse bore I64 through the middle of the element I38 communicates with the passage I50, and the lower end thereof forms an outlet I66 adapted for threadable connection with the pipe 52, while its upper end is adapted to threadably receive the stem of a second pressure-gauge
  • a valve-head I10 Positioned interiorly of the assembled elements I38-I54 is a valve-head I10, one face of which is adapted to seat against an annular flat surface or shoulder I12 formed interiorly of the chamber I52, and the valve I10 has an integral stem I14 which extends interiorly through the passage I50 and is slidable therein, and is adapted to engage a slidable rod I16 having on its opposite end an integral head I18 in the form of a thin metal disc slightly smaller in diameter than the opening I40 so as to be readily movable therein.
  • valve I10 The opposite face of the valve I10 is provided with an integral projection I over which is adapted to fit one end of a coil spring I82, which bears against the valve I10, and the opposite end of this spring is seated within the recess I58 and bears against the flat surface of an annular shoulder I58.
  • the normal closed position of the valve mechanism is best illustrated in Figures 1 and 5, wherein the spring I82 is shown bearing forcibly against the valve head I18 so as to seat same to assume a tightly closed position and effectively bar passage of liquidor the like between the inlet I60 and outlet I66.
  • valve stem I14 will have forced the slidable rod I10 with its attached head I10 to the extreme outer end of the chamber I40, where the head I10 will bear against the adjacent face of the disc I40.
  • any pressure exerted from within the chamber I26 as, for example, by liquid under pressure entering the discharge end of the rinse line 24, will, upon reaching the disc I40, cause the central portion of the disc to bend in thedirection of the chamber I40 with suflicient force to cause the assembly II I14I'I0--I'I0 to move backward against the tension of the spring I02, causing said spring to partially contract and allow a corresponding opening of the valve I by separating it from the valve seat I12, and providing an opening through which liquid might pass from inlet side to outlet side of the device.
  • FIG. 6 A modified form of flow control mechanism for the purpose just described and for other purposes is shown in Figure 6, wherein the discharge side of the rinse line 24 is tapped similarly to the showing in Figures 1 and 5, but the T-shaped element I20 having the three communicating openings I22, I24, and I20, flange I32, and fastening means I04, with disc member I46, are, herein shown as connected to and adapted to actuate a mechanism which starts an electric pump or the like, through the medium of an electric snap switch.
  • This mechanism consists of a member I04 having an extension I06 to which is pivotally attached a somewhat vertically disposed arm I00 which, in turn, is pivotally connected to a horizontally disposed element I00, which may be pivotally connected to the operating lever I 02 of an electric switch I04 of the toggle type, said switch being connected to a motor-driven pump I06 by means of suitable electrical connections or wiring I00 receiving power through a usual source or line 200, the switchI04 itself being preferably of any one ofv a number of standard, well known constructions.
  • Pump connections 202 and 204 are provided whereby liquid or other substances may be forced from point to point, as, for example, in a dish-washing machine installation or the like.
  • the member I04 is provided interiorly thereof with an enlarged opening 206 approximately the same size as the enlarged portion of the opening I26 of the member I20, and joined thereto in the same manner as the showing in Figures 1 and 5. Opening from the chamber 206 is a smaller bore 200, with a still smaller passage 2I0 providing access from the exterior.
  • a slidable stern 2I2 having an integral disc-shaped head 2
  • 2 is pivotally connected at 222 to the arm I00 in such manner that movement of the stem 2I2 and its related elements in a sidewise direction will force the arm I00 to move in an arc in relation to its attached parts, which are is of greater distance at the lower end 224 of the member I00, and whereby any slight movement of the stem 2I2 as above described will quickly throw the switch lever I02 and start operation of the unit I06.
  • a cleaning apparatus comprising in com- 'bination, a cleaning chamber, a liquid storage supply line, areagent dispenser, said dispenser having inlet and outlet means, the second of said supply lines delivering substances to said dispenser through the inlet thereof, said dispenser outlet being connected to the cleaning chamber, and means actuated by the pressure in the first supply line when the flow control valve therefor is open for controlling the delivery of substances from said second supply line through said dis-' red, whereby the substance carried by said second supply line may pass through the said dispenser and contact a reagent contained therereservoir within said cleaning chamber, a pair of non-communicating supply lines, the first of said supply lines being introducedinteriorly of said cleaning chamber and having an outlet within said chamber, a flow control valve for said first supply line, a reagent dispenser, said dispenser having inlet and outlet means, the second of said supply lines for delivering substances to said dispenser through the inlet thereof, said dispenser outlet being connected to the cleaning chamber, a normally inactive electrically driven pump for controlling the flow of substances through the second of said supply

Description

Dec. 16, 1941. p, HUNTER 2,266,205
CLEANING APPARATUS Filed Oct. 5, 1938 2 Sheets-Sheet l 12mm P HU/WE/Q 1N VENT OR.
QA AEZM ATTORN EY.
Dec. 16, 1941. p HUNTER 2,266,205
CLEANING APPARATUS Filed Oct. 5, 1938 2 Sheets-Sheet 2 222 z z 46 493 2/6 132 6 206 206 Z4 INVENTOR.
ATTORNEY.
Patented Dec. 16, 1941 CLEANING APPARATUS Donald P. Hunter, Los Angcles, Calif., assignor to Turco Products, Inc., Los Angeles, Calii'., a corporation of California Application October 5, 1938, Serial No. 233,441
2 Claims (01. 141-9) This invention relates to improvements in cleaning apparatus, and particularly special purpose cleaning machines such as dish-washing machines of the type now in use by many restaurant establishments for cleaning large quantities of dishes, wherein a dish cleaning chamber is provided and the dishes washed and rinsed therein by means of water circulatory systems having as a necessary adjunct an apparatus for supplying both water containing a cleaning compound for dissolving and removing grease, food particles, etc., from the dishes, and also including means for replenishing any amounts of such cleaning compound lost or weakened by dilution during a cleaning operation, so as to keep such solution at proper strength at all times.
Another important object of the invention is to provide a cleaning apparatus equipped with a special type of dispenser or mixing and storage supply tank for concentrated cleaning material solutions or the like, which apparatus shall be of simple construction and positive and eiiicient of operation, composed of a minimum of parts, and less likely to get out of order than devices heretofore used for this purpose.
A further important object of the invention is to provide a cleaning apparatus composed of a number of associated elements which are readily detachable and capable of application to many other standard or special type cleaning devices, and certain of which are readily adaptable for use in connection with many other types of equipment, such as dish washing machines, laundry machines, automotive parts, cleaning equipment, bottle washing machinery, and many other de vices, as well as liquid and air and other supply lines and circulatory systems in general.
Another and further object of the invention is to provide an apparatus having as an essential element thereof a storage supply container for concentrated cleaning solution, which container shall also perform the function of mixing the cleaning solution and dispensing the same, and which may be positioned either adjacent to, disunits of the apparatus to which it is connected, as for purposes of convenience or accessibility, without impairing the eflicient operation of the apparatus as a whole or any individual unit thereof.
A still further important object of the invention is to provide, in combination with a water or other supply line or circulatory system of the general type above referred to, a novel flow control mechanism for automatically controlling the flow of a given element from point to point in a supply line or circulatory system where such flow is desired simultaneously and in coordination with the flow of a second supply or circulating medium, but entirely separate and independent of contact therewith.
Anotherand still further important object of the invention is to provide a flow control mechanism of novel construction designed primarily for use in connection with water circulatory systems or the like, but which shall be equally well adapted for use with any supply lines carrying air, gas, liquid, steam, or other elements or combinations thereof, and which mechanism shall be outstandingly eflicient when used in connection with apparatus requiring an accurately measured flow of a given element which must be automatically controlled and maintained constant throughout long operating periods without adjustment.
A further object of the invention is to provide a circulating or dispensing apparatus utilizing liquid or other substances or elements as the medium circulated or dispensed, wherein such substances are treated or mixed with other substances, and wherein the treating medium is drawn from a combination mixer and supply tank and carried therefrom by means of water, air, or other elements, thesource of the carrying agent being separate anddistinct from that of the supply line or other apparatus to which it is related or connected, and wherein the flow of the substance through the mixing and supply tank is controlled automatically by means of a simple, readily attachable device.
Other and further objects of the invention will be apparent from the disclosurein the accompanying drawings and following specification.
The invention, in a preferred form, is illustrated in the drawings and hereinafter more fully described.
In the drawings:
Figure 1 is a vertical sectional view through a dish cleaning apparatus embodying my invention.
tant from, above, or below the plane of the other 55 Figure 2 is a top plan view of a solution mixing and storage supply container forming a part thereof.
Figure 3 is a sectional view taken on the line 3-3 of Figure 1.
Figure 4 isan enlarged longitudinal section through a flow control valve forming part of my invention.
Figure 5 is an enlarged longitudinal section through a flow control mechanism forming part of my invention.
of some suitable liquid cleaning material, suchv as soap-water or the like, the reservoir 20 be ing provided with a screened overfiowpipe 22 for controlling the level of the liquid contained therein.
Machines of this type are ordinarily equipped with a system of pipes comprising standard conduits with spray-heads, which are for the purpose of forcing the contents of the reservoir 20 upward by pumping or the like for spraying the dishes or other objects contained in the chamber it with cleaning solution, thus. removing any grease, food particles, or other matter from the surface of the dishes, the solution so used then gravitating back into the reservoir 2B for re-use or ultimate disposal through. the overflow pipe 22 or in some other manner. A circulating device suitable for this purpose is shown at A in Figure 1.
Additionally there is provided a spray line which is also positioned interiorly oi the device, for the purpose of spraying clear rinse water over the dishes in the chamber is following the initial cleaning operation above described.
' Referring now to Figure i, such spray line usually consists of an ordinary water supply pipe 25 having a manually operable shut-off valve as preferably located exteriorly of the machine, the pipe being introduced interiorly of the machine as shown at 28 and terminating in a spray-head to having a series of jets 32 through which a spray of clear rinse water may be directed downwardly over the surface of the dishes as the second step of the cleaning process, such rinse water then passing by gravity into the reservoir 20, where it comes into contact with the cleaning solution, normally diluting the same and causing a portion thereof to. overflow through the pipe 22 and escape .through a waste-pipe 34. A
water pressure indicator 35 may be mounted at a suitable location along the rinse line H to determine the water pressure.
Since most machines of this type provide for gravitation of the rinse water into the solution reservoir 20 during the rinsing operation, thus diluting and weakening the cleaning solution contained in said reservoirat each operation of the rinse line and causing a portion of the diluted solution to escape, it becomes necessary to restore -'the cleaning solution to its original strength by adding thereto after each rinsing operation, or-
after like intervals, an amount of concentrated cleaning compound equal to that lost in the process of dilution above referred to, so as to maintain the cleaning solution circulated through the machine at the required strength to perform the cleaning task efilciently at all times.
This adding of cleaning compound is customarily done between primary cleaning operations. Sometimes the operator simply pours an additional amount of detergent powder or similar material directly into the reservoir 20. In other installations a supply of highly concentrated cleaning solution is brought from a nearby tank through some kind of a conduit and the flow therethrough controlled by means of a manually operable valve or the like. However, such practices have been found to be very unsatisfactory, principally for the reason that the amounts thus added ar seldom accurately measured by the operator, and usually result in either too weak a cleaning solution if too little is added, or a waste of the concentrate if too much is added. Again, it sometimes happens that the time allowed for performing this task is very short, as for example during rush hours, at which time 'the operator might be forced to do the work ratus a combination mixing chamber and dispenser from which a uniform solution of concentrated cleaning material is adapted to flow into the reservoir 28 automatically and in the proper quantity whenever such addition becomes necessary, thus eliminating the necessityof the operator attending to th same.
My combination mixing chamber and dispenser from which such additional concentrated compound may be drawn comprises essentially a container 38 having a removable lid M, the under surface of which is provided with an integral flange or guide ring :22, the lid 4d being preferably tight fitting and the dispenser rendered watertight by the interpositioning of a gasket or the like :36 between container and lid, and some suitabl fastening means 36 may be provided for attaching the lid it securely over the mouth of the dispenser.
The dispenser 38 may be in the form of a simple hollow container having an inlet 68 the flow through which is controlled by a manually operable valve 50 connected to a supply line 52 carrying a substance such as water or the like. An outlet 55 is provided in the dispenser and is preferably located near the top thereof so as to act as an overflow, and this outlet leads to the machine it by way of a section of tubing 55 which extends through the wall I? of the machine and has its terminus directly over the reservoir 20.
At suitable times the container 38 is provided with a supply of soap powder or some other soluble cleaning compound in highly concentrated form, this cleaning compound becoming thoroughly dissolved by contact with the liquid entering the container through the inlet 58. The resulting solution then flows out of the container and into the reservoir 20 through the tube 58 whenever the level of the solution in the container reaches the plane of the outlet 5 and so long as liquid continues to be admitted through the inlet 48.
In order'to provide for maximum erhciency I prefer to construct the'dispenser 38 as best v of the dispenser.
by a continuous wall 62, and within the central chamber 58 is positioned a third compartment in the form of a suspended soap container 84 composed of sidewalls 66 and bottom 88, the sidewalls 66 having screened openings I0, the bottom 88 being preferably spaced away from the floor element 64 is flared outwardly, extending over the wall 62 and continuing upward and outward interiorly of the dispenser to a point adjacent the upper edge of the outer wall thereof, where it may be secured by soldering or the like to prevent leakage, or arranged in some other manner to render the contact watertight or nonspilling, and, if desired, there may be a watertight seal effected between the upper edge of the wall 82 and the flared portion 12 by the use of suitable gaskets, or by soldering or the like.
The upper portion 12 of the In my preferred construction of the dispenser,
the inlet 48 is formed interiorly of the container with an elongated tube 14 which leads directly into the central chamber through the wall 82, where its body is directed downwardly toward the floor or bottom of the container so as to provide for the utmost contact between incoming liquid and the lower portion ofthe contents of the compartment 04 as well as any undissolved soap which may have gravitated through the screened openings 10 and settled upon the floor of the container.
As the liquid level within the central chamber 58 rises, the contents of the compartment 84 ings I0 and into the compartment 64, and thereafter the resulting concentrated cleaning solution will pass outward in solution through the screened openings I0 and into the chamber 08, which, when filled, will allow the charged liquid to overflow into the outer chamber 80 through a series of elongated overflow tubes 16 mounted in the wall 62, the long lower ends of these tubes being also downwardly directed and leading the overflowing concentrate downward to the bottom of the chamber 80 so as to cause a maximum dissolving action of any soap particles which may have accumulated at that point. The rising of the liquid level in this outer chamber 60 will eventually cause the same to overflow through the outlet 54 for delivery of a concentrated solution of purely liquid consistency into the reservoir 2 0 of the washing machine Ill.
In the showing made in Figure 1, the installation is one in which the concentrate is delivered into the dish washing machine under pressure, since the location of the machine proper is above that of the concentrate dispenser 38. This type of arrangement is highly desirable when it is more convenient to locate the dispenser 38 at a point removed from the machine I0 so as to make it more accessible to the operator attending to its refilling. It may, in fact, be located in a distant room or even on a different floor above or below that on which the machine I0 is located. Obviously, the dispenser 88 may also be used to supply concentrate for more than one washing machine or other apparatus, by simply providing each unit to be served with a similar line equipment to that illustrated in Figure 1, leading same to the dispenser 88, and providing the proper additional intake and outlet connections in the latter.
Referring again to Figure l: A measured how of water into the container '38 isprovided by means of the valve 50, which is manually operable and may be of the conventional type, such asa' needle valve or the like, which, when once set, will allow a predetermined rate of flow into the container 88. However, I have found in practice that the ordinary type of valve requires adjustment at short intervals because of the considerable variation in the flow of liquid therethrough due to corrosion of parts, etc. To minimize or eliminate this condition I have provided a new and novel type of valve for this purpose which performs much more satisfactorily than a needle valve and requires little or no adjustment even after very long periods of constant use, yet maintaining the maximum uniformity of the fiow throughout any given period of operation. This new device is best illustrated in Figure 4, and consists of the usual body 88 provided with an inlet port 90 and an outlet port 82, with the customary packing-nut 88 and stem packing 88 and fitted with a partially solid stem I00 to which is. attached a control handle I02, the stem I00 being suitably screw threaded for insertion into the body 88 in the usual manner. The lower end I04 of the valve stem I00 is hollow and of reduced size, fitting snugly into the outlet channel 82, so as to provide a watertight fit along the interior wall of said outlet channel.
The outlet opening 92 as well as the inlet opening open interiorly of the body 88 into a slightly enlarged chamber I 06 located centrally of the valve, the chamber I06 being large enough in size to allow for ready passage of liquid therethrough around the upper and wider central portion of the valve'stem I00, and the floor of this central chamber is formed at right angles with its sidewall, forming a seat I08 for the rectangular shoulder I I0 formed in the solid portion of the valve stem I00 when the valve is in fully closed position. The hollow lower portion I04 of the stem I00 extends from a lower outlet orifice II2 through the narrow portion of the stem, and terminates at a point slightly above the shoulder IIO as shown at II4. A short distance below the plane of the shoulder IIO the hollow valve end I04 is drilled transversely to provide a small inlet orifice II6 which extends through the walls of the hollow stem portion I04 to the exterior surface thereof. Thus turning the valve handle I02 in a clockwise direction will cause the orifice IIB to assume a closed position interiorly of the outlet channel 02, resulting in a closed valve and preventing the particular element carried in the chamber I06 from escaping through the orifice H8 and into the outlet .I I2-- 82, since the wall of the channel 82 will completely cover said orifice H8.
A counter-clockwise turning of the handle I02 will raise the location of the oriflce H8 and cause a partial opening of the valve as soon as said orifice assumes an open connection with the central chamber I08, as best illustrated in Figure 4. Further counter-clockwise turning of the handle I02 will obviously cause the orifice I I8 to assume a completely open connection with the central chamber I08, to provide the maximum amount of flow through the device, and thus providing a continuous passage for liquid from the intake port 90 to the outlet port 92, which 'may by this means .be effectively regulated as to flow, the diameter of the orifice II 6, of course, governingthe maximum flowof substances through the valve when the device is in open position. In apparatus other than that illustrated herein,
. this same type of valve may serve equally well for lines carrying air, steam, gas, or other elements.
As hereinbefore pointed out, the rate of flow through the valve is governed by the area of the orifice H6 which is exposed above the shoulder I I0, and it has been found that this construction results in a more uniform and constant flow of substances, over considerable periods of time, especially, in small valves of the type used in connection with apparatus such as that hereinbefore described.
The liquid supply for the dispenser 38 may be tapped from any available supply line, as, for example, from the rinse water pipe 24 at a point anteriorly of the valve 26, thus creating a bypass flow through the dispenser 36, which mayv be manually controlled by a simple use of the valve 50, by means of ordinary conduit such as the element 52.
However, when automatic and coordinated operation is desired and the rinse water is found adequate for the purpose, the rinse line 24 may be tapped on the discharge side of the valve 26, whereupon the solution replenishing process previously described will occur automatically each time the rinse line of the machine is operated by opening of the valve 26, and the delivery of cleaning solution into the reservoir 20 will continue for the exact period of time that the valve 26 remains open, and thus by a simple regulation of the amount of water circulated through the dispenser' 38 by such 'by-passing method, any washwater lost by dilution or overflow from the reservoir 20 will be completely replenished simultaneously with operation of the rinse line and between the heavy cleaning operations, which is the most suitable time for this purpose; It will, of course, be obvious that when a difierent time is selected for the replenishing operation, the liquid supply for the dispenser may be similarly tapped from other sources of supply.
When in some cleaning machine installations it is desirable for any reason .to derive the supply of liquid for the container 38 from a source other than the rinse line 24, and yet retain the'very desirable feature of the automatic coordinated timing, as, for example, when cold water is desired for the dispenser 68 in preference to the hot or tepid water of the rinse line 24, or when warm water is desired for the dispenser 38- when a cold rinse line is used, it would, of course, be necessary to provide some suitable automatic flow control means actuated by the pressure of the liquid carried by the rinse line.
For this purpose I have devised a novel mechanism by which the same identical result may be attained automatically, the same as in an installation in which the discharge side of the valve 26 is directly tapped for the liquid by-passing purpose. This is accomplished by tapping the discharge-side of the water supply line 24 as best shown in Figure 1 as well as a second liquid supply line which may be represented by the element II8 (Figure 1)' and connecting therebetween a special type of valve or other mechanism, a preferred construction of which is best shown in Figures 1 and 5, by means of which the flow of liquid from the element II8 may be started and sent through the dispenser 38 by means of tubing such as that shown at 52 whenever the rinse valve 26 is opened, and maintained throughout the rinsing operation until the valve 26 is again closed.
My preferred construction of a mechanism of this type comprises a valve consisting of a T- shaped hollow member I20 having three communicating openings I22, I24, and I26. The
openings I22 and I24 are interiorly screw threaded and adapted for connection to similarly screw threaded free ends along the pipe line 24 as best indicated at I28 and I30 in Figure 1, which arrangement forms a continuous passage into the machine I0 for liquid carried through the pipe 24.
The third opening I26 is outwardly directed and slightly enlarged, as best shown in Figure 5, and the walls thereof provided with an outwardly directed annular flange I32 formed exteriorly .of the opening I26 and at right angles thereto,
the flange I32 having a series of openings I34 therethrough for accommodatingscrews, bolts, or the like I36.
To the member I20 is attached a second cylindrical member I38 having an opening I48 of substantially the same diameter and depth as the enlarged portion of the opening I26, and having a flange I42 with openings I44 corresponding to those in the flange I32, and in registration therewith. Between the openings I26 and I40 is positioned a non-rigid disc I46 preferably formed of rubber composition or similar material, capable of forming a pliant diaphragm, this disc being of a diameter large enough to cover the entire open faces I26 and I40, and the disc is preferably perforated along its periphery with openings adapted to register with the openings I34 and I44, whereby the disc I46 is held in fixed position by .means of the bolts or screws I36, which are tightened to provide a perfectly watertight connection at this point.
The member I38 is formed with a continuous passage comprising a relatively small bore I46, a larger centrally located bore I50 of somewhat larger diameter, and an enlarged opening or inlet I52 which is exteriorly screw threaded to receive the similarly screw threaded end of a cap I54 having a central bore I56 beginning interiorly thereof with a recessed portion I58, and terminating exteriorly with an enlarged opening of inlet port I60 adapted for threadable engagement with the pipe line II8 by some suitable connecting means I62. The opening I40, of course, also forms part of the continuous passagejust described.
A transverse bore I64 through the middle of the element I38 communicates with the passage I50, and the lower end thereof forms an outlet I66 adapted for threadable connection with the pipe 52, while its upper end is adapted to threadably receive the stem of a second pressure-gauge Positioned interiorly of the assembled elements I38-I54 is a valve-head I10, one face of which is adapted to seat against an annular flat surface or shoulder I12 formed interiorly of the chamber I52, and the valve I10 has an integral stem I14 which extends interiorly through the passage I50 and is slidable therein, and is adapted to engage a slidable rod I16 having on its opposite end an integral head I18 in the form of a thin metal disc slightly smaller in diameter than the opening I40 so as to be readily movable therein.
The opposite face of the valve I10 is provided with an integral projection I over which is adapted to fit one end of a coil spring I82, which bears against the valve I10, and the opposite end of this spring is seated within the recess I58 and bears against the flat surface of an annular shoulder I58. The normal closed position of the valve mechanism is best illustrated in Figures 1 and 5, wherein the spring I82 is shown bearing forcibly against the valve head I18 so as to seat same to assume a tightly closed position and effectively bar passage of liquidor the like between the inlet I60 and outlet I66. Thus pressure of the valve stem I14 will have forced the slidable rod I10 with its attached head I10 to the extreme outer end of the chamber I40, where the head I10 will bear against the adjacent face of the disc I40. Thereafter any pressure exerted from within the chamber I26, as, for example, by liquid under pressure entering the discharge end of the rinse line 24, will, upon reaching the disc I40, cause the central portion of the disc to bend in thedirection of the chamber I40 with suflicient force to cause the assembly II I14I'I0--I'I0 to move backward against the tension of the spring I02, causing said spring to partially contract and allow a corresponding opening of the valve I by separating it from the valve seat I12, and providing an opening through which liquid might pass from inlet side to outlet side of the device. Similarly, releasing of the pressure in the chamber I26 by shutting oil the flow of the rinse-line 24 will permit the spring I02 to again fully expand and close the valve I10 by forcing the assembly I'|0-I'|4Il6l10 back into its original position wherein the head I10 will have forced the central portion of the disc I46 in the direction of the chamber I26.
It will therefore be obvious that when the apparatus illustrated in Figure 1 is used, opening of the rinse water line 24 by means of the valve will cause the water to flow under considerable pressure through the fitting I20 on its way to the interior spray head of the dish-washing ma- 20 by'means of the delivery pipe 56, such process then continuing without interruption until the rinse valve 26 is again shut off, and providing an automatic and perfectly co-ordinated process among the respective units of the apparatus. In a machine employing an air line in addition to the rinse line, for the purpose of drying the washed dishes, this mechanism can be similarly attached to such air line, with the same identical result, so far as automatic operation of the dispenser is concerned.
A modified form of flow control mechanism for the purpose just described and for other purposes is shown in Figure 6, wherein the discharge side of the rinse line 24 is tapped similarly to the showing in Figures 1 and 5, but the T-shaped element I20 having the three communicating openings I22, I24, and I20, flange I32, and fastening means I04, with disc member I46, are, herein shown as connected to and adapted to actuate a mechanism which starts an electric pump or the like, through the medium of an electric snap switch. This mechanism consists of a member I04 having an extension I06 to which is pivotally attached a somewhat vertically disposed arm I00 which, in turn, is pivotally connected to a horizontally disposed element I00, which may be pivotally connected to the operating lever I 02 of an electric switch I04 of the toggle type, said switch being connected to a motor-driven pump I06 by means of suitable electrical connections or wiring I00 receiving power through a usual source or line 200, the switchI04 itself being preferably of any one ofv a number of standard, well known constructions. Pump connections 202 and 204 are provided whereby liquid or other substances may be forced from point to point, as, for example, in a dish-washing machine installation or the like. The member I04 is provided interiorly thereof with an enlarged opening 206 approximately the same size as the enlarged portion of the opening I26 of the member I20, and joined thereto in the same manner as the showing in Figures 1 and 5. Opening from the chamber 206 is a smaller bore 200, with a still smaller passage 2I0 providing access from the exterior. Within the passage 206-200-2I0 is positioned a slidable stern 2I2 having an integral disc-shaped head 2| 4, which is held securely against the rubber or composition disc I46 by means of a coil spring 2I6 lo cated within the chamber 200 and around the stem 2I2, and bearing forcibly against the head 2 on one end, and on the other endagainst an annular shoulder 2I0 formed in the member I04 interiorly of the chamber 200. a
The end portion 220 of the stem 2| 2 is pivotally connected at 222 to the arm I00 in such manner that movement of the stem 2I2 and its related elements in a sidewise direction will force the arm I00 to move in an arc in relation to its attached parts, which are is of greater distance at the lower end 224 of the member I00, and whereby any slight movement of the stem 2I2 as above described will quickly throw the switch lever I02 and start operation of the unit I06.
It will be seen that herein are provided various elements of new and novel construction which, when assembled, comprise cleaning and other apparatus for widely diversified uses, the individual elements of which are readily attachable and interchangeable with similar purpose devices of an unsatisfactory nature, now in use.
I am aware that many changes may be made and numerous details of construction varied throughout a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted hereont otherwise than as necessitated by the prior ar I claim as my invention:
1. A cleaning apparatus, comprising in com- 'bination, a cleaning chamber, a liquid storage supply line, areagent dispenser, said dispenser having inlet and outlet means, the second of said supply lines delivering substances to said dispenser through the inlet thereof, said dispenser outlet being connected to the cleaning chamber, and means actuated by the pressure in the first supply line when the flow control valve therefor is open for controlling the delivery of substances from said second supply line through said dis-' penser, whereby the substance carried by said second supply line may pass through the said dispenser and contact a reagent contained therereservoir within said cleaning chamber, a pair of non-communicating supply lines, the first of said supply lines being introducedinteriorly of said cleaning chamber and having an outlet within said chamber, a flow control valve for said first supply line, a reagent dispenser, said dispenser having inlet and outlet means, the second of said supply lines for delivering substances to said dispenser through the inlet thereof, said dispenser outlet being connected to the cleaning chamber, a normally inactive electrically driven pump for controlling the flow of substances through the second of said supply lines, and a pressure operated switch responsive to the pressure in said first supply line when the flow control valve therefor is open for activating the normally inactive pump.
DONALD P. HUNTER.
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523799A (en) * 1944-08-25 1950-09-26 Gen Electric Soap supplying system for automatic clothes-washing machines
US2621673A (en) * 1948-06-12 1952-12-16 Jr John G Hodgens Electronic solution control apparatus
US2687139A (en) * 1948-04-22 1954-08-24 Bois Co Inc Du Method for controlling detergent concentration in dishwashing machines or the like
US2770242A (en) * 1953-08-24 1956-11-13 Justin L Tubiolo Liquid detergent dispenser
US2792258A (en) * 1954-11-18 1957-05-14 Dudley A Huber Apparatus for continuous chemical cleaning and conditioning of paper mill wet felts
US2834364A (en) * 1955-10-13 1958-05-13 Federighi George Joseph Automatic liquid soap or detergent dispenser for dish washing machines
US3005888A (en) * 1958-12-22 1961-10-24 Vaillant Joh Kg Electric continuous-flow heater with water deficiency safety device
US3021863A (en) * 1960-08-26 1962-02-20 Gen Electric Dispensing mechanism
US3139890A (en) * 1962-05-11 1964-07-07 Moran George Wenzel Dishwasher having means to inject liquid additive into the rinse water supply line
US3185395A (en) * 1963-04-04 1965-05-25 William R Van Deburg Steam-cleaning apparatus
US3203436A (en) * 1963-02-25 1965-08-31 Electrolux Ab Dishwashing machine provided with control mechanism
US3265009A (en) * 1963-08-07 1966-08-09 Union Tank Car Co Sewage pumping system
US3345478A (en) * 1965-11-23 1967-10-03 Harold D Hutchinson Flow responsive switch
US3478757A (en) * 1968-02-12 1969-11-18 American Dish Service Automatic detergent,rinse additive and sterilizer dispenser for dishwashers
US5396914A (en) * 1989-11-23 1995-03-14 Vulcan Australia Limited Detergent dispenser in a dishwashing machine

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523799A (en) * 1944-08-25 1950-09-26 Gen Electric Soap supplying system for automatic clothes-washing machines
US2687139A (en) * 1948-04-22 1954-08-24 Bois Co Inc Du Method for controlling detergent concentration in dishwashing machines or the like
US2621673A (en) * 1948-06-12 1952-12-16 Jr John G Hodgens Electronic solution control apparatus
US2770242A (en) * 1953-08-24 1956-11-13 Justin L Tubiolo Liquid detergent dispenser
US2792258A (en) * 1954-11-18 1957-05-14 Dudley A Huber Apparatus for continuous chemical cleaning and conditioning of paper mill wet felts
US2834364A (en) * 1955-10-13 1958-05-13 Federighi George Joseph Automatic liquid soap or detergent dispenser for dish washing machines
US3005888A (en) * 1958-12-22 1961-10-24 Vaillant Joh Kg Electric continuous-flow heater with water deficiency safety device
US3021863A (en) * 1960-08-26 1962-02-20 Gen Electric Dispensing mechanism
US3139890A (en) * 1962-05-11 1964-07-07 Moran George Wenzel Dishwasher having means to inject liquid additive into the rinse water supply line
US3203436A (en) * 1963-02-25 1965-08-31 Electrolux Ab Dishwashing machine provided with control mechanism
US3185395A (en) * 1963-04-04 1965-05-25 William R Van Deburg Steam-cleaning apparatus
US3265009A (en) * 1963-08-07 1966-08-09 Union Tank Car Co Sewage pumping system
US3345478A (en) * 1965-11-23 1967-10-03 Harold D Hutchinson Flow responsive switch
US3478757A (en) * 1968-02-12 1969-11-18 American Dish Service Automatic detergent,rinse additive and sterilizer dispenser for dishwashers
US5396914A (en) * 1989-11-23 1995-03-14 Vulcan Australia Limited Detergent dispenser in a dishwashing machine

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