US2842161A - Drain and overflow construction for rotary basket jet type dish washers and the like - Google Patents

Drain and overflow construction for rotary basket jet type dish washers and the like Download PDF

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US2842161A
US2842161A US33698253A US2842161A US 2842161 A US2842161 A US 2842161A US 33698253 A US33698253 A US 33698253A US 2842161 A US2842161 A US 2842161A
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drain
tub
closure
opening
disposed
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Robert H Hunter
Mills Gates
Elmer J Kasper
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Hunter Co Inc
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Hunter Co Inc
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Priority to US777388A priority Critical patent/US2642369A/en
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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
    • A47L15/0089Washing or rinsing machines for crockery or tableware of small size, e.g. portable mini dishwashers for small kitchens, office kitchens, boats, recreational vehicles
    • 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
    • A47L15/26Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by other means
    • A47L15/30Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by other means by rotating only
    • A47L15/32Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by other means by rotating only rotated by means of spraying water
    • 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
    • A47L15/4214Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4223Devices for water discharge, e.g. devices to prevent siphoning, non-return valves
    • 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
    • Y10T137/8593Systems
    • Y10T137/86187Plural tanks or compartments connected for serial flow
    • Y10T137/86228With communicating opening in common walls of tanks or compartments

Description

July 8', 1958 R. H. HUNTER ET AL 2,
DRAIN AND OVERFLOW CONSTRUCTION FOR ROTARY BASKET JET TYPE nzsu WASHERS AND THE LIKE Original Filed Oct. 2, 1947 2 Sheets-Sheet 1 i /9 i 6/ .36 l 7; 17 15 INVENTORS Robert H. Hunter g E 2 /9 BY Elmer J. Kasper ATTORNEY y 8, 1958 R. H. HUNTER ETAL 2,842,161
DRAIN AND OVERFLOW CONSTRUCTION FOR ROTARY BASKET JET TYPE DISH WASHERS AND. THE LIKE Original Filed Oct. 2. 1947 2 Sheets-Sheet 2 INVENTORS Robert H. Hunter BY Elmer I. Kasper TORNEY United States Patent DRAIN AND OVERFLOW CONSTRUCTION FOR ROTARY BASKET JET TYPE DISH WASHERS AND THE LIKE Robert H. Hunter, Gates Mills, and Elmer J. Kasper, Cleveland, Ohio; said Kasper assignor to said Hunter Original application October 2, 1947, Serial No. 777,388,
now Patent No. 2,642,369, dated June 16, 1953. Divided and this application February 16, 1953, Serial No. 336,982
Claims. 01. 137-576) This invention relates to washing machines or devices and more particularly to stream or jet washers for dishes and the like. The cleansing action of high velocity water jets has long been known and a number of dishwashers have been designed to operate on the high velocity jet principle. Washers of this character are customarily of complicated or intricate desigmemploying a large number of components which not only make the machine or washer expensive to build and relatively large and cumbersome, but also make its service and upkeep a costly factor. The present invention is thus directed to improvements in dishwashers, particularly of the jet type, special attention being given to the simplification of such washers to the end that they may be produced economically with a minimum number of parts and so that they Will give long service without costly maintenance or service being required. Reference is made to copending application for United States Patent Serial No. 777,388 filed October 2, 1947 now Patent No. 2,642,369 of which this is a division. I
The principal object of the invention is to provide a simple and inexpensive this structure and associated drain and overflow means of lightweight construction so that the washer can be readily moved about. As a particular phase of this aspect of the invention, it is sought to provide a portable dishwasher in which an overflow and drain are incorporated in a common lightweight assembly having an outlet so positioned as to discharge the cleaning liquid from the washer into a conventional sink bowl when the washer is mounted on one of the sink drainboards.
Other objects and advantages of the invention are concerned with the provision of a quick acting drain closure for the tub, bottom in combination with a housing structure therefor which includes passage means communicating with the tub overflow so that all discharge and overflow from the tub is released through a common outlet.
The above and other objects of the invention will become apparent from the following detailed description of a preferred embodiment of the invention, this description being made by referance to the accompanying drawings forming a part of this specification and in which like parts throughout the several views are indicated by the same letters and numerals of reference.
In the drawings:
Figure 1 is a vertical sectional view through the assembled dishwasher, parts being broken away and re-- moved;
Fig. 2 is a top plan view of the washer, partly in section and with parts broken away and removed, this view being taken substantially along the line indicatedat 22 of Fig. 1;
Fig. 3 is a fragmentary elevational detail taken substantially on the line 3-3 of Fig. 1 and enlarged with respect to that figure;
ice
Fig. 4 is a sectional detail to show the drain and valve structure, taken substantially on the line 4-4 of Fig. 3;
Fig. 5 is a sectional detail taken substantially on the line indicated at 55 of Fig. 4 and enlarged with re spect to that view, parts being broken away and removed;
Fig. 6 is a sectional detail similar to Fig, 4 showing the closure for the discharge opening in open position; and
Fig. 7 is a sectional detail taken substantially on the line indicated at 77 of Fig. 4 and enlarged with respect to that view, parts being broken away and removed.
The present washer, of the portable type, is particularly suited for domestic use where space is at a premium. The device can be stored in a cupboard or closet and set up on a sink drainboard for use in washing the family dishes after every meal. Under such circumstances the weight of the appliance is an important factor and special attention has been given to making a washer which is light in weight so as to be readily moved about by a housewife without objectionable inconvenience.
The washer comprises an upright open topped tub B which may be circular in shape, as shown, or if desired, square or other polygonal shape. The tub has a removable top or closure B. Inside the tub is disposed a dish and cutlery receiving assembly C which is mounted for rotation preferably about a vertical axis. Cleansing liquid is introduced through a nozzle means or assembly D into the interior of the tub in the form of a suitable jet or jets to impinge on dishes and cutlery in the receptacle or assembly C. The high velocity jets from the nozzle impinge on dishes and other articles to be washed that are supported in the receptacle C causing the latter to rotate within the tub.
A drain and closure or valve means is provided for retaining in the tub A the washing liquid that is introduced through the nozzle D. The liquid level progressively rises in the tub during the washing process and a cleasing agent such as soap or other detergent is initially introduced into the tub so that'the swirling of the liquid over the immersed dishes and cutlery has an efiective cleansing action thereon. The outlet valve or closure means is also arranged for draining the tub rapidly so that when the cleansing operation is completed the liquid can be quickly released from the tub and rinsing liquid can be introduced through the nozzle D.
Tub structure The tub A is preferably formed of sheet metal by a spinning or drawing process, the metal base being either stainless steel, aluminum for lightness, or other suitable material treated to resist corrosion. The tub has a circular'fiat bottom 1 the edges of which are integrally joined ,by upwardly curved marginal portions 2 to upstanding cylindrical side walls 3. Around the upper edges of the side walls 3 is formed an outwardly oiiset upstanding flange portion having its edge bent or rolled outwardly to provide a circular head 4. At the base of the offset The circular inner edge of the metal ring 6 is rolled or bent to form an S shaped flange 9 which provides a 3 circumferential channel. The channel opens inwardly and embraces edge of a circular transparent member or disc 11. The disc 11 of molded glass or plastic is centrally formed with an integral upstanding grip or handle 12 by means of which the lid or closure B can be manipulated in removing it from and placing it on the tub A. The bead 8 of the closure B has a light friction fit within the flange offset of the tub so as to retain the cover in the position in which it is placed in the tub against the reactive forces resulting from the jets of the nozzle D.
An upright central post or spindle 14 of brass or plated steel is secured at its lower end, as by a press fit, in upstanding cylindrical supporting sleeve 15 formed at one end with an integral circular attaching flange 16 riveted at 17 to the tub bottom 1 in the center of the latter. The flanged sleeve 15 is preferably of brass or other wear resisting metal and its upper end is received within the socket of the basket to guide the latter and to serve as a bearing, as will later appear.
Basket structure The article receiving receptacle or assembly C includes a dish supporting basket formed of open mesh or perforated metal. The basket conforms in general to the shape of the tub A and has a fiat circular bottom 19, the circular margin of which is connected by upwardly curved portions 20 to upstanding, substantially cylindrical side walls 21.
A tubular metal socket member or sleeve 23 is received over the spindle 14 to support the article receiving receptacle C thereon. The sleeve is formed at its lower end with a radial flange 24 on which rests a circular washer or ring 25. The central aperture in the washer receives the body of the socket member 23 and the disc underlies the bottom 19 of the basket to support the latter. A flanged collar 26 is forced or press fitted over the socket member 23 and against the portions of the basket bottom 19 that surround the socket member so as to hold the basket bottom against the supporting disc 25, thus retaining the parts in assembled relation.
Top or closed end 28 of the socket member 23 bears on the upper end of the spindle 14 to support the basket and article receiving assembly C above the bottom 1 of the tub, space 29 thus provided below the basket serving to receive any solid particles that may be washed olf the dishes during the cleansing process. A clearance 30 between the basket side walls 21 and the tub side walls 3 is also provided so that the basket may be freely rotated on the spindle 14 without the basket rubbing on the side walls of the tub.
The socket end 28 may bear directly on the top of the spindle 14 or, preferably an anti-friction device such as a steel ball 32 is inserted between the parts, this ball being retained in place and centered on the spindle 14 by a brass bearing thimble or cap 33 which is retained on the upper end of the spindle as by a press fit. A hardened plug 34 threaded through the end 28 of the socket member 23 and coaxial to the latter contacts and bears endwise against the steel ball 34.
In the center of the basket and forming a part of the article receiving receptacle assembly C is a cutlery cage formed of metal rods or heavy gauge wire welded or soldered together. The cage comprises a pair of bottom radial elements or bars each of which is formed to provide arms 35 and a semi-circular guide portion 36. Circular rings 37 and 38 are welded or soldered to the radial arms 35 in concentric relation about the center or socket sleeve 23. At equidistantly spaced intervals about the outer ring 38, the latter is formed with a number of reversely bent upstanding loops or convolutions 39 which may be integral with the ring, or as shown, made of separate pieces welded in place. A ring 40 of the same diameter as the ring 37 is supported above the latter by vertical elements 41 which are welded to the two rings. Some of the stop loops 39 are formed with depending portion 42 which extend downwardly through the interstices of the basket bottom 19 so as to interlock the basket and cutlery cage for rotation in unison.
In the center of the cage structure a relatively tall retainer for cutlery is formed by a helical or spiral wire coil 43. A number of upright stilfeners 44 are disposed at intervals about the helical coil 43 and are welded or soldered to the turns of the latter.
Washing liquid or water is supplied to the nozzle means D through a flexible conduit such as a tubular hose 45 having an end connector 46 that is screwed onto or held by a spring pressed clutch collar on a mating fitting secured on a tube 47 which is pressed into an opening in body portion 48 of the nozzle. The other end, not shown, of the flexible conduit 45 is provided with a conventional fitting for attachment to a sink hot water or mixing faucet so that the device can be thus connected to the relatively high pressure water system of the house.
In the present washer a relatively large flow or movement of the suds or detergent-containing water is created over the surfaces of the dishes and plates being washed by retarding the rotational movement of the basket or receptacle C so that it moves at a relatively slow speed such as from about 10 to about 30 revolutions per minute, preferably in the neighborhood of about 20 revolutions per minute.
The forces of the driving jets and the force of the retarding jet tend to become balanced as the rotational speed of the basket increases to equilibrium. The sizes of the jets are so proportioned that without using an excessive quantity of water in a washing cycle the basket can be made positively to rotate at what may be termed a substantially minimum speed merely sutficient to move the plates and dishes sequentially around into the paths of the jets.
During the intervals when the dishes are not directly subjected to the action or impingement of the jets, but are moving around in the tub, they are, of course, undergoing a soaking and gentle flushing action in the turbulent suds-containing water. Hence, the washing cycle includes alternate periods of soaking or flushing with detergent-containing water and periods of vigorous scrubbing and scouring action in which the detergentcontaining water is driven over and across the surfaces of the articles by the energizing action of the jets.
In the washer of the present invention the washing action is obtained in a large measure through the swirling and scrubbing of the water mass in the tub over the surfaces of the dishes as well as by the direct scrubbing or scouring action of the jets impinging and driving against the dishes.
Overflow and drain In the side wall of the tub adjacent the top is an overflow or outlet opening 60 which releases the liquid from the tub chamber at a predetermined height so as to prevent overflowing of the tub. In the tub bottom 1 a discharge or drain opening 61, normally covered by a closure to be later described, releases the washing liquid or water from the tub when the washing action has been completed.
A common drain structure is provided to receive and carry off liquid discharged from the tub through both the overflow opening 60 and the drain Opening 61. This structure or unit comprises a chambered drain member 62 formed as by casting of light metal such as aluminum. It is a hollow shell-like structure received over a portion of the curved corner wall 2 of the tub so as to define a drain chamber 63. A deformable sealing gasket 64 of cork or rubber is interposed between the various edge portions of the drain member 62 and the walls of the tub A to provide a water-tight joint therebetween. A number of screws such as indicated at 65 are threaded into the drain member through the tub walls to secure the parts together. So that the drain member will underlie a portion of the tub bottom as well as extend up over a portion of the side wall 3, it is made in somewhat of an L shape. The internal chamber 63 is also somewhat L shaped and both the drain member and the chamber therein overlie and partially embrace a corner portion of the tub at the angle of the bottom and side walls of the latter.
Extending upwardly from the top portion of the drain casting 62 and as a continuation thereof is a channel member or plate 67 which overlies a portion of the tub side wall 3. A longitudinally extending central portion of the channel plate is bowed outwardly and is spaced from the tub wall while edge portions 68 of the plate make continuous contact with the tub wall to provide an overflow drain passage or passageway 69 which extends down the outside of the tub and connects to the drain chamber 63 of the drain member 62. The channel plate 67 is disposed across the (overflow) opening 60 so that the latter is continuous with the drain passage 69 and the upper end of the plate is formed inwardly at 70 to make contact with the tub wall above the overflow 60. The lower end of the plate 67 extends within a recess provided therefor in the upper end of the drain casting 62 and is secured in place as by a screw 71 so that the overflow passage 69 is continuous with the drain chamber 63. A deformable gasket 72 of rubber or cork is interposed between the edges of the channel plate 67, tub walls and the drain member 62 so as to provide fluid-tight seals. In the outer angle of the drain member 62 the wall of the latter is formed with an aperture or orifice 73 which serves as an outlet through which liquid received in the drain member is discharged into the bowl of the sink on which the washer is mounted.
To support the washer off the drainboard of the sink a foot 74, formed with a threaded stem 75, is screwed into a threaded opening in the inner end of the drain member 62. Other feet 76 are secured to the tub bottom at points spaced from the foot 74 to support the tub in horizontal or level position. Desirably, rubber cushions 77 are fitted into and retained in recesses in the bottoms of the tub feet 74 and 76 to prevent sliding of the tub on a supporting surface and to prevent marring of a porcelain or enamel surface by the tub feet. When the washer is used on an inclined drainboard the tub can be levelled by screwing the threaded stem 75 into or out of the drain casting 62 so as to compensate for the slope of the drainboard. It is therefore desirable to employ only two of the supporting feet 76 in addition to the adjustable height foot 74.
A closure or quick acting valve for the drain opening 61 is supported in and wholly carried by the member 62 of the drain assembly. The valve comprises a closure member 80 which may be made to underlie the opening 61 and carries a deformable sealing pad or gasket 81 engageable with the bottom wall 1 of the tub about the opening 61 to seal the latter and prevent the flow of water out of the tub. The closure 80 is a metal stamping formed at one end with an upstanding arm portion 82, the upper end of the arm having a reverse bend 83 hooked through a slot 79 in a supporting bracket 84. The closure piece or member is thus of L. shape and has rolled or flanged edges 85 which strengthen the stamping to prevent distortion or bending in operation. The bracket 84 is hat shaped, having like end portions that are secured to the inside of the upstanding wall of the drain member 62 by rivets 86. The edges of the reversely bent portion 83 onthe upper end of the closure member arm are confined between side portions of the bracket 84 so as to prevent lateral shifting of the closure while permitting the latter to swing or pivot in an are between the broken and full line positions indicated in Fig. 5.
Drain valve mechanism The closure valve normally drops by gravity to the open position shown by the full lines in Fig. 6 in which the drain opening 61 in the bottom of the tub is clear or substantially unobstructed for the discharge of water or washing liquid into the drain chamber 63. For moving the closure to swing upwardly across the drain opening 61 into the sealing position shown in full lines in Fig. 4 and in broken lines in Fig. 6 a mechanism is provided which may be manually operated externally of the drain assembly so that a housewife can open and close the drain without coming in contact with the wash water which besides being dirty or gritty, may be at an elevated temperature and may contain strong or irritating cleansing agents.
The drain opening and closing mechanism comprises a stub shaft 87 journaled in a bushing supported in the upright wall portion of the drain member 62 just below the bracket 84. The outer end of the stub shaft 87 is formed with a reduced diameter portion 88 which receives a hand lever 89 of cast metal or molded plastic composition, the lever being secured on the shaft as by a set screw 90. The squared inner end of the shaft 87 is received in a square opening in a cam lever 21, the end of the shaft being riveted or peened over the lever to secure the latter on the shaft. On the end of the lever 91 an angularly disposed cam portion 92 is formed with inclined edges one of which, upon rotation of the shaft 87 by the hand lever 89 through about ninety degrees, is moved into engagement with the lower part of the upright portion 82 of the closure so as to swing the closure upwardly from the open or full line position shown in Fig. 6 to the closed position shown by the broken lines of that figure and by the full lines in Figs. 1 and 4. Reverse movement of the hand lever withdraws the cam from the upright portion 82 of the closure, allowing the latter to drop by gravity and the pressure of the water to quickly open the drain. The valve operating mechanism is quick operating and thus functions to effect complete opening or closing of the valve in a one-quarter turn of the operating lever 89.
Operation In utilizing the washer of the present invention to cleanse articles such as plates and dishes E of a table service and table cutlery, the articles, after a preliminary rinsing or scraping to remove loose food particles and the like, are placed in the receptacle C in the manner previously described,,there preferably being no water in the tub. The dishes are thus angled out from the center of the basket in upright turbine-like arrangement with the concave sides of the dishes all facing around in the same direction so as to receive the direct force of the large driving jets. A quantity of suitable washing powder of the detergent type is introduced into the tub, preferably in the center thereof, the lid or cover B is placed on the .top of the tub, and high pressure water, preferably at an elevated temperature such as from about 12Q' F. to
about F. is supplied to the nozzle D through the conduit 45.
Upon reaching the level of the overflow opening 60 the suds-water flows out the latter and is discharged into the sink through the drain orifice 73. The washing powder or detergent contained in the Water has the effect of causing the grease, soil and dirt removed from the dishes to rise to the top of the water bath to be entrained in the outflowing water and discharged through the overflow opening. Heavy particles of dirt and soil removed from the dishes and which donot migrate upwardly tend to settle into the bottom of the tub below the level of the rotating basket.
After the water starts to run out of the overflow opening the supply of water to the jets for a short period of time such as a minute or so. The drain closure 80 is then released to drop away from the discharge opening 61 allowing the wash water to drain from the tub. As the water flows out of the tub the jets are continued in operation so that the dishes are thoroughly rinsed with fresh hot water supplied through the nozzle D. The rinsing action, which takes place continuously as the level of the wash water recedes, leaves the articles and also the interior of the tub and the basket in a clean, fresh condition such that no special washing or wiping is required.
When the last of the wash water has been emptied from i the tub through the discharge opening 61 and clear rinse water appears to be flowing out the discharge 73 the supply of water to the nozzle Dis shut off. The cover B is then removed from the washer, allowing the free circulation of ambient drying air over the articles in the washer.
The principles of the present invention may be utilized in various ways, numerous modifications and alterations being contemplated, substitution of parts and changes in construction being resorted to as desired, it being understood that the embodiment shown in the drawings and described above is given merely for purposes of explanation and illustration without intending to limit the scope of the claims to the specific details disclosed.
What we claim and desire to secure by Letters Patent of the United States is:
1. In a washer having a tub with side and bottom walls, and L. shaped hollow member formed separately from the tub and disposed against the outside of the latter over the corner between the side and the bottom walls, the bottom wall of the tub being formed with a drain opening into the interior of the hollow member, a closure disposed within the hollow member and movable to and from sealing position across the drain opening, the hollow member being formed with an outlet for releasing liquid discharged from the tub through the drain opening, the hollow member including a portion extending underneath the tub and comprising a rest for supporting the washer, means secured to the tub at points spaced from the hollow member in symmetrical relation to the latter and extending below the tub bottom to support the tub in spaced relation above a supporting sink drainboard surface or the like, and an adjustable height foot carried by such portion of the hollow member to cooperate with said spaced supporting means an to provide for leveling of the washer and to insure concentration of washer weight on a predetermined part of the hollow member.
2. In a washer having a tub comprising bottom and side walls, a drain member assembled to the tub and disposed against the outside of the tub over portions of both the bottom and side walls, said drain member being concave and formed with a continuous closed peripheral edge engaged sealingly against both the bottom and the side walls of the tub in a continuous closed parting line, the drain member and said bottom and side wall portions of the tub defining a drain passage continuous down the side and under the bottom of the tub, said tub being formed with drain and overflow openings in said bottom and side wall portions, respectively, each of said openings communicating with the drain passage, a closure supported by the drain member and movable into and out of sealing relation across the drain opening in the tub bottom, an actuator carried by and projecting through the drain member and having operative engagement with the closure for operating the latter, the drain member being formed with an orifice to discharge water received in the drain passage from both the drain and overflow openings, and means securing the drain member assembled to the tub, whereby the closure and the actuator are supported primarily and directly by the drain member and secondarily and indirectly by the ttub.
3. In a washer having a tub comprising bottom and side walls, a drain member assembled to the outside of the tub, said drain member comprising a vertical portion disposed against a portion of the tub side wall and a horizontal portion disposed against a portion of the tub bottom wall, said drain member being concave and formed with a continuous closed peripheral edge engaged sealingly against both the bottom and the side walls of the tub in a continuous closed parting line, the drain member and said bottom and side wall portions of the tub defining a drain passage continuous down the side and under the bottom of the tub, said tub being formed with drain and overflow openings in said bottom and side wall portions, respectively, each of said openings communicating with the drain passage, a closure supported by the drain member and movable into and out of sealing relation across the drain opening in the tub bottom, an actuator carried by and projecting through the drain member and having operative engagement with the closure for operating the latter, the drain member being formed with an outwardly directed orifice at the juncture of the vertical and horizontal portions to discharge water received in the drain passage from both the drain and overflow openings, and means securing the drain member assembled to the tub, whereby the closure and the actuator are supported primarily and directly by the drain member and secondarily and indirectly by the tub.
4. In combination, a tub having angularly disposed side and bottom walls joined to define a bottom corner, the tub being adapted to be disposed in normal use with its bottom wall substantially horizontal and its side wall substantially vertical, a hollow drain member formed separately from the tub and disposed against and on the outside of the tub over the bottom corner with a generally horizontal portion of such drain member extending under the tub bottom and a generally vertical portion of such drain member extending up the tub side wall from the corner, said drain member having edges contoured to conform to and disposed sealingly against the side and bottom walls to provide a drain chamber defined by the tub and the drain member, the tub bottom being formed with an opening into that part of the drain chamber defined by the horizontal portion of the drain member, a closure for the opening, means mounting the closure on the drain member for swinging movement toward and away from the opening, an aperture formed through the vertical portion of the drain member into the drain chamher at a point above the plane of the tub bottom, an operator extending into the drain chamber through such aperture and having operative connection with the closure inside the chamber, said operator being actuatable from outside the drain member to swing the closure into sealing relation across the opening in the tub bottom, and the drain member being formed intermediate its ends and adjacent the tub corner with an outlet orifice for releasing from the drain chamber liquid discharged into the latter from the tub opening, the outlet orifice in the drain member being below the aperture in the vertical portion of the drain member for the operator to minimize leakage of fluid through such aperture.
5. In combnation, a tub having angularly disposed side and bottom walls joined to define a bottom corner, the tub being adapted to be disposed in normal use with its bottom wall substantially horizontal and its side wall substantially vertical, a hollow drain member formed separately from the tub and disposed against and on the outside of the tub over the bottom corner with a generally horizontal portion of such drain member extending under the tub bottom and a generally vertical portion of such drain member extending up the tub side wall from the corner, said drain member having edges contoured to conform to and disposed sealingly against the side and bottom walls to provide a drain chamber defined by the tub and the drain member, the tub bottom being formed with an opening into that part of the drain chamber defined by the horizontal portion of the drain member, a closure for the opening, said closure being disposed in the drain chamber and having one end pivotally supported on the vertical portion of the drain member for swinging movement toward and away from the opening, an aperture formed through the vertical portion of the drain member into the drain chamber at a point above the. plane of the tub bottom and below the pivot support'of the closure, an operator extending into the drain chamber through such aperture and having operative connection with the closure inside the chamber, said operator being actuatable from outside the drain member to swing the closure into sealing relation across the opening in the tub bottom, and the drain member being formed intermediate its ends and adjacent the tub corner with an outlet orifice for releasing from the drain chamber liquid discharged into the latter.
6. In combination, a tub having angularly disposed side and bottom walls joined to define a bottom corner, the tub being adapted to be disposed in normal use with its bottom wall substantially horizontal and its side wall substantially vertical, a hollow drain member formed separately from the tub and disposed against and on the outside ofthe tub over the bottom corner with a generally horizontal portion of such drain member extending under the tub bottom and a generally vertical portion of such drain member extending up the tub side wall from the corner, said drain member having edges contoured to conform. to and disposed sealingly against the side and bottom walls to provide a drain chamber defined by the tub and the drain member, the tub bottom being formed with an opening into that part of the drain chamber defined by the horizontal portion of'the drain member, a closure for the opening, means mounting the closure on the drain member for swinging movement toward and away from the opening, an aperture formed through the vertical portion of the drain member into the drain chamber at a point above the plane of the tub bottom, an operator extending into the drain chamber through such aperture and journaled therein for rotative movement about an axis which intersects and is normal to the surface generated by the side wall of the tub, said operator having operative connection with the closure inside the chamber and being actuatable from outside the drain member to swing the closure into sealing relation across the opening in the tub bottom, and the drain member being formed intermediate its ends and adjacent the tub corner with an outlet orifice for releasing from the drain chamber liquid discharged into the latter.
7. In combination, a tub having angularly disposed side and bottom walls joined to define a bottom corner, the tub being adapted to be disposed in normal use with its bottom wall substantially horizontal and its side wall substantially vertical, a hollow drain member formed separately from the tub and disposed against and on the outside of the tub over the bottom corner with a generally horizontal-portion of such drain member extending under the tub bottom and a generally vertical portion of such drain member extending up the tub side wall from the corner, said drain member having edges contoured to conform to and disposed sealingly against the side and bottom walls to provide a drain chamber defined by the tub and the drain member, the tub bottom being formed with an opening into that part of the drain chamber defined by the horizontal portion'of the drain member, a closure for the opening, said closure being disposed in the drain chamber and having one end pivotally supported on the vertical portion of the drain member for swinging movement toward and away from the opening, an aperture formed through the vertical portion of the drain member into the drain chamber at a point above the plane of the tub bottom and below the pivot support of the closure, an operator extending into the drain cham- 10 ber through such aperture and journaled thereinfor rotative movement about an axis which intersects and is normal to the surface generated by the side wall of the tube, said operator and the closure having an operative cam connection inside the drain chamber and below the 8. In combination, a tub having angularly disposed side and bottom walls joined to define a bottom corner, the tub being adapted to be disposed in normal use with its bottom wall substantially horizontal and its side wall substantially vertical, a hollow drain member formed separately from the tub and disposed against and on the outside of the tub over the bottom corner with a generally horizontal portion of such drain member extendingunder the tub bottom and a generally vertical portion of such drain member extending up the tub side wall from the corner, said drain member having edges contoured to conform to and disposed sealingly against the side and bottom walls to provide a drain chamber defined by the tub and the drain member, the. tub bottom being formed with an opening into that part of the drain chamber defined by the horizontal portion of the drain member, a closure having angularly related sealof the drain member vand the supporting portion in that part of the chamber defined by the vertical portion of such drain member, such supporting portion of the closure being pivotally supported on the drain member for swinging movement of the sealing portion toward and away from the opening, an aperture formed through the vertical portion of the drain member into the drain chamber at a point above the plane of the tub bottom, an operator extending into the drain chamber through such aperture and having operative connection with the closure inside the chamber, said operator being actuatable from outside the drain member to swing the closure into sealing relation across the opening in the tub bottom, and the drain member being formed intermediate its ends and adjacent the tub corner with an outlet orifice for releasing from the drain chamber liquid discharged into the latter.
9. In combination, a tub having angularly disposed side and bottom walls joined to define a bottom corner, the tub being adapted to be disposed in normal use with its bottom wall substantially horizontal and its side wall substantially vertical, a hollow drain member formed separately from the tub and disposed against and on the outside of the tub over the bottom corner with a generally horizontal portion of such drain member extending under the tub bottom and a generally vertical portion of such drain member extending up the tub side wall from the corner, said drain member having edges contoured to conform to and disposed sealingly against the side and bottom walls to provide a drain chamber defined by the tub and the drain member, the tub bottom being formed with an opening into that part of the drain chamber defined by the horizontal portion of the drain member, a closure for the opening, means mounting the closure for movement to and from sealing relation across the opening, an operator carried by the drain member and having operative connection with the closure for moving the latter into such sealing relation,
and the drain member being formed substantially at the juncture of its horizontal and vertical portions with an outlet orifice for releasing from the drain chamber liquid discharged into the latter from the tub opening, said outlet orifice being wholly below the horizontal surface generated by the tub bottom and being wholly on, the.
outside of the vertical surface generated by the tub side wall relative to the tub opening whereby liquid received in the drain chamber from the tub opening is traveled horizontally in the drain member through such vertical surface for discharge through the outlet orifice outside such vertical surface.
10. In combination, a tub having angularly disposed side and bottom walls joined to define a bottom corner, the tub being adapted to be disposed in normaluse with its bottom wall substantially horizontal and its side wall substantially vertical, a hollow drain member formed separately from the tub and disposed against and on the outside of the tub over the bottom corner with a. generally horizontal portion of such drain member extending under the tub bottom and a generally vertical portion of such drain member extending up the tub side wall from the corner, said drain member having edges contoured to conform to and disposed sealingly against the side and bottom walls to provide a drain chamber defined by the tub and the drain member, the tub bottom being formed with an opening into that part of the drain chamber defined by the horizontal portion of the drain member, a closure for the opening, means mounting the closure for movement to and from sealing relation across the opening, an operator carried by the drain member and having operative connection with the closure for moving the latter into such sealing relation, a channel member disposed against the outside of the side wall of the tub to provide an overflow passage between the side wall and the channel, the channel member including flanges disposed sealingly against the side wall, the side wall of the tub being formed with an overflow opening into the overflow passage, the channel member having an end interfitted with the vertical portion of the drain 12 member and the overflow passage being continuous with the drain chamber, and the drain member being formed intermediate its ends and adjacent the tub corner with an outlet orifice for releasing from the drain chamber liquid discharged into the latter.
References Cited in the file of this patent UNITED STATES PATENTS 350,219 Trott Oct. 5, 1886 916,643 Weaver Mar. 30, 1909 1,085,245 Cowdrey Jan. 27, 1914 1,135,108 Gschwind Apr. 13, 1915 1,397,846 Walker Nov. 22,, 1921 1,508,828 Wohlay Sept. 16, 1924 1,678,102 Bresler July 24, 1928. 1,758,226 Kaufman May 13, 1930 1,891,287 Niles Dec. 20,, 1932 2,032,525 Brotz Mar. 3, 1936 2,044,249 Kohler June 16, 1936 2,052,589 Weiland Sept. 1, 1936 2,218,507 Day Oct. 22, 1940 2,231,460 Barman Feb. 11, 1941 2,521,166 Hinricks Sept. 5, 1950 2,530,433 Jaegle Nov. 21, 1950 2,608,981 Jackson Sept. 2, 1952 2,632,453 Friedman Mar. 24, 1953 2,646,056 Korns July 21, 1953 FOREIGN PATENTS 4,842 Great Britain 1895 165,486 Great Britain 1921 197,118 Great Britain 1923 251,458 Great Britain 1926 485,519 Great Britain 1938
US33698253 1947-10-02 1953-02-16 Drain and overflow construction for rotary basket jet type dish washers and the like Expired - Lifetime US2842161A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090001006A1 (en) * 2007-06-29 2009-01-01 Gianluca Pardini Integrated suction and draining device for the tank of a dishwashing machine and dishwashing machine including such a device
US20090241993A1 (en) * 2008-03-28 2009-10-01 Warner Charles E Drain system for a warewasher
US20100059086A1 (en) * 2006-11-30 2010-03-11 Premark Feg L.L.C. Drain system for a warewasher
CN104173011A (en) * 2014-09-05 2014-12-03 苏州思莱特电子科技有限公司 Rotating dish-washing machine
US10123676B2 (en) 2014-10-10 2018-11-13 Illinois Tool Works Inc. Warewash machine with automated drain and fill

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
US20100059086A1 (en) * 2006-11-30 2010-03-11 Premark Feg L.L.C. Drain system for a warewasher
US8252121B2 (en) 2006-11-30 2012-08-28 Premark Feg L.L.C. Drain system for a warewasher
US20090001006A1 (en) * 2007-06-29 2009-01-01 Gianluca Pardini Integrated suction and draining device for the tank of a dishwashing machine and dishwashing machine including such a device
US20090241993A1 (en) * 2008-03-28 2009-10-01 Warner Charles E Drain system for a warewasher
US8192558B2 (en) 2008-03-28 2012-06-05 Premark Feg L.L.C. Drain system for a warewasher
CN104173011A (en) * 2014-09-05 2014-12-03 苏州思莱特电子科技有限公司 Rotating dish-washing machine
US10123676B2 (en) 2014-10-10 2018-11-13 Illinois Tool Works Inc. Warewash machine with automated drain and fill

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