US3087769A - Rack system for dishwashing machine - Google Patents

Rack system for dishwashing machine Download PDF

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Publication number
US3087769A
US3087769A US129598A US12959861A US3087769A US 3087769 A US3087769 A US 3087769A US 129598 A US129598 A US 129598A US 12959861 A US12959861 A US 12959861A US 3087769 A US3087769 A US 3087769A
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United States
Prior art keywords
cover
rack
tub
section
link
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US129598A
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English (en)
Inventor
Lauren W Guth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL281810D priority Critical patent/NL281810A/xx
Priority to BE621072D priority patent/BE621072A/xx
Application filed by General Electric Co filed Critical General Electric Co
Priority to US129598A priority patent/US3087769A/en
Priority to DEG35621A priority patent/DE1201019B/de
Priority to GB29860/62A priority patent/GB997916A/en
Priority to CH935262A priority patent/CH394529A/de
Priority to FR906305A priority patent/FR1330614A/fr
Application granted granted Critical
Publication of US3087769A publication Critical patent/US3087769A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/50—Racks ; Baskets
    • A47L15/506—Arrangements for lifting racks for loading or unloading purposes

Definitions

  • the present invention relates to automatic dishwashing machines for use in the home and particularly to a top rack construction which facilitates the ease of loading the maximum amount of dishes into the machine.
  • a common complaint voiced against automatic dishwashers is that they are so difficult to load, and that some people prefer to wash dishes by hand rather than go to the trouble of loading and unloading the machine.
  • Much engineering time has been spent on the problem of designing dishwashing machines which are easy to load, will hold a maximum capacity of dishes, and will wash all of the dishes with equal results.
  • the portable model of tub type machine is closed by a hinged top cover while the built-in model is supported on rollers so that it may be shifted in and out of the counter and sealed shut when it is fully within the counter.
  • This invention is primarily concerned with tub type dishwashers having a top-opening cover and particularly the construction of the topmost rack so that both the bottom and top racks may be loaded simultaneously in random fashion without interfering with the loading of the other rack.
  • a primary object of the present invention is to provide an automatic dishwasher with two equal capacity dishracks for a maximum dish load where both racks may be loaded and unloaded in any order without interfering with the loading of the other rack.
  • a further object of the present invention is to provide a dishwashing machine with a swinging rack section pivoted to the cover of the machine so that when the cover is opened the rack section will rise out of the machine for gaining access to the dishwashing tub.
  • a further object of the present invention is to provide a dishwashing machine where the topmost rack is pivotally supported from the top-opening cover so that all racks of the machine may be loaded simultaneously without interfering with the loading of the other racks.
  • a still further object of the present invention is to provide an automatic dishwasher with a movable rack section that remains substantially level as the movement takes place.
  • the automatic dishwashing machine comprises a washing compartment formed by a tub and a top-opening cover that is.
  • a dish-supporting rack is mounted adjacent the mid-height of the tub and this rack is divided or split into at least two sections, namely, a front section and a rear section.
  • the front rack section is supported by a parallelogram linkage system of which the cover is a part so that when the cover is raised the front rack section rises simultaneously, while remaining substantially level, until the front rack section is positioned over the rear rack section. It should be apparent that in this position a lower dish rack located in the bottom of the tub may be loaded with ice dishes at the same time both sections of the top rack are being loaded, all without interfering with the loading of the other racks.
  • FIGURE 1 is a right side elevational view of a portable dishwasher embodying the present invention with the top cover closed and parts broken away for illustration of the racking system and its relation to the dishwashing compartment;
  • FIGURE 2 is a fragmentary side view similar to that of FIGURE 1 showing only the top portion of the machine with the top cover in its fully open vertical position with the front rack section of the topmost rack being positioned substantially over the rear rack section;
  • FIGURE 3 is a fragmentary top plan view taken on the line 33 of FIGURE 1 showing the right side of the split topmost rack to illustrate the linkage elements for supporting the front rack section.
  • this invention has been shown in one form as applied to a portable automatic dishwasher 10 having a dishwashing compartment 11 formed by a large capacity tub 1'2 with a top opening that is adapted to be closed by a pivoted cover 13.
  • the tub 12 is substantially of square shape in plan view and it is formed by a series of four vertical walls such as front wall 14, parallel side walls 15 and rear wall 16. These vertical walls are suitably fastened together to form a cabinet structure.
  • the bottom of the tub 12 must be raised above the bottom of the cabinet because a motor and pump assembly 20 must be located below the tub to serve as the source of power for the washing action that takes place Within the compartment 11.
  • the bottom of the tub is formed by a recessed floor 21 which is Welded or otherwise fastened to the side walls of the tub 12.
  • the motor pump assembly 20 is suspended in an opening 22 in the center of the bottom wall 21.
  • a washing system comprised of an axial flow pump mechanisrn 23 that supplies water to both a rotating spray army 24 and a vertically extensible spray tube 25.
  • the purpose of the extensible spray tube 25 is to provide a washing action in the area of the mid-height of the tub. It should be understood that this washing system does not form part of the present invention, but that it is described and claimed in copending applications of Hardy et al., Serial No.
  • a metal sheathed resistance heating element 26 is formed in the shape of a.
  • control system that includes selective switches, timer mechanisms, water valves, and a suitable wiring harness to connect these components to the various controlled mechanisms of the machine.
  • Most of the control system of the machine is located within a control housing 28 that is supported from the front wall 14 of the tub for gaining ready access to these controls for testing and servicing purposes.
  • the controls which must be manually set are located in a control panel 29 that extends across the top front edge of the machine where they may be easily observed and manipulated.
  • Element 30 is a handle member for maneuvering the portable machine between its storage space, the kitchen table and the kitchen sink.
  • a rotating spray nozzle 31 is supported from the underside of the top cover 13 for washing downwardly onto the dishes in the top rack of the machine.
  • the cover 13 includes a short feed pipe 32 having a bell mouth hose coupling 33 for joining the hose to a separate length of tubing 34 which is connected at its bottom to the motor pump assembly 20 as is best seen in FIG- URE 1.
  • This rotating spray nozzle 31 and its accompanying structure does not form part of the present invention, but it is disclosed and claimed in the Sasnett Patent 2,987,260 which issued on June 6, 1961, and is assigned to the same assignee as is the present invention.
  • a standard full-size diswasher on the market today includes double racks which are supported within the tub, one above the other, in a spaced relationship.
  • the machine of the present invention incorporates a lower wire rack 36 and an upper wire rack 37.
  • the present invention is concerned with the uppermost rack 37 but a brief explanation will be given first of the nature of the lower rack 36.
  • the lower rack 36 is formed of open wire-work construction having a base 38 of intersecting wire lengths that are welded together to provide a checker-board appearance.
  • the base is provided with corner feet 39 that rest on the bottom wall 21 of the tub adjacent the corners thereof.
  • Upstanding fingers 40 are joined to the base 38 to serve as support members between which the plates, pots and pans, dome ware, etc., may be stacked or placed so that they remain in generally a vertical position facing into the water sprays emanating from the rotating spray arm 24.
  • the vertically extensible spray tube 25 extends through the center of the lower dish rack 36 so that the tube might rise until its orifice is adjacent the center of the space between the upper and lower racks 37 and 36 respectively.
  • top rack 37 is split in the middle as at 47 along a line that parallels the back wall 16 of the tub.
  • This rack 37 is also of open wire-wound construction having checkerboard configurations as well as folded side walls 48 to form a basket-like construction as distinguished from the flattened base construction minus side wall of the lower rack 36.
  • the rear section 46 of the topmost rack 37 is made stationary while the front section 45 is supported from both the tub 12 and the top cover 13 by a parallelogram linkage system identified generally as element 50.
  • the reason for such a supporting system is that the front rack section 45 is designed to move with the top cover 13 so that as the cover is raised the rack section is raised, and as the cover is lowered the rack section is lowered.
  • FIGURES 1 and 2 show the front rack section 45 in its two extreme positions, namely, the closed position of FIGURE 1 and the open position of FIGURE 2.
  • the rear rack section 46 is made stationary by supporting it on suitable pins such as 51 that extend inwardly from the vertical walls of the tub.
  • a pivotal connection must be made between the cover and the front rack section to allow suflicient head room for the dishes that are to be loaded in the top rack.
  • the underside of the cover 13 is provided adjacent each side with a downwardly extending hanger or bracket 52 which etxends down along the side of the front rack section 45.
  • This bracket is for mating engagement with a pivot pin 53 that extends sidewardly from a clip member 54 that is fastened to the side of the front rack section to provide a hinged connection between the rack section and the cover.
  • L-shaped link members 55 are joined between the lower front of the front rack section 45 and the tub 12 by hinge means 56 and 57 respectively as is best seen in FIGURE 1. Actually there is one link member 55 at each side of the tub. The rear end of the link 55 is slipped over one of the pin members 51 that supports the rear section 46 from the side walls 15. When the rear rack section 46 is positioned in the tub on the pins 51 it serves as a means for preventing the link 55 from slipping off the pins 51. Moreover, it 'is a simple matter to assemble and disassemble the links 55 from the pin 51, if it were considered necessary to remove the entire top rack 37 in order to service the washing mechanism or for some other reason.
  • FIGURE 2 With the cover in its substantially vertical fully open position it is apparent that the pivot pin 53 connecting between the cover and the front rack section 45 must be located so that the rack section may pivot with relation to the cover through an angle of about ninety degrees from the parallel closed position of FIGURE 1 to the perpendicular open position of FIG- URE 2. This means that the distance from the rear edge of the front rack section 45 to the pivot pin 53 must be less than the length of the bracket 52 that is supported from the cover 13 and connected to the pivot pin 53.
  • the pivot point 56 along the lower front edge of the front rack section 45 is so located that there is a parallelogram formed by (l) the hinge axis 60 of the top cover 13, (2.) the hinge pin 53 connecting the front rack section '45 to the cover by means of the bracket 52, (3) the hinge means 56 of the stabilizing link 55 and (4) the hinge means 57 at the other end of the stabilizing link. It is because of this use of a parallelogram that it is possible to control the tilting movement of the front rack section 45 so that it remains substantially horizontal while the cover is being pivoted either open or closed.
  • the parallelogram linkage system 50 is so designed to support the front rack section 45 in its open position, as seen in FIGURE 2, to cooperate with the spring force of the counter-balance springs 61 of the cover and insure that the weight of the dish load stacked in the front rack sections 45 will not be enough to exert a torque that will tend to close the cover in a violent manner. It is best if a positive closing action is necessary in order to bring the cover down to its fully closed and latched position of FIGURE 1.
  • This wire form 62 is also shown in FIG- URE 3 where it can be identified as a U-shaped form that is down-turned.
  • the purpose of this wire form is to serve as a gauge 62 above which the dishes should not extend, otherwise they might be crushed when the cover is forced into its latched position.
  • the gauge 62 serves as a barrier to space the dishes away from the rear corners of the rack sections 45 so that the dishes in this area do not interfere with the cover as the rack is lowered into its closed position of FIGURE 1.
  • These gauges or barriers are of primary importance adjacent the rear corners of the rack section because of the concave nature of the underside of the cover 13 .as is best seen in FIGURE 1.
  • An automatic dishwashing machine comprising a tub that is opened at the top, a top cover pivotally mounted adjacent the top back edge of the tub and serving when in .a closed position to seal the tub and form a dishwashing compartment, dish-supporting rack means mounted in the tub adjacent the mid-height thereof, the rack means being divided into at least two sections, there being a front rack section and a rear rack section that substantially fill the area in plan view of the tub, a parallelogram linkage system supporting said front section from the tub and cover so that when the cover is raised the front rack section rises with the cover to substantially overlie the rear section, said rear section being substantially stationary with said tub, said system including a support rigidly secured to said cover and extending down into pivoted engagement with said front section, the said cover and said support acting as one link of the parallelogram linkage system, said one link slanting downwardly from the pivotal mounting of said cover to the pivoted engagement of said support with said front section when said cover is closed suificiently to cause said front section to move forward initially as it rises to
  • An automatic dishwashing machine comprising a washing compartment formed by .a tub and a top cover hinged adjacent the top edge of the tub at the rear of the machine, a dish-supporting rack mounted intermediate the height of the tub, the rack being divided into two sections, a rear stationary section and a front movable section, and means for supporting the front section so that when the cover is moved the front section will move therewith, said means being represented by a parallelogram linkage system wherein the said hinged cover represents part of one link in the said parallelogram linkage system, a second link being the front rack section itself, a third link being a pair of side arms each pivoted at one end adjacent the front of the front rack section and at its other end to the inner surface of the tub adjacent the rear rack section, the fourth link being the tub itself, said rear section ⁇ being substantially stationary within said tub, said system including a support rigidly secured to said cover and extending down into pivoted engagement with said front section, said support completing said first link so that said first link slants from the hinged junction of said
  • An automatic dishwashing machine comprising a washing compartment formed by a tub and a top cover hinged adjacent the top edge of the tub at the rear of the machine, a dish-supporting rack mounted adjacent the mid-height of the tub, said rack being divided into a rear section and a movable front setion, a parallelogram linkage system entirely supporting said front rack section, one link of the system being in part the hinged cover, the front rack section being a second link, a third link being represented by a pair of side arms each pivoted at one end to the front rack section at a point below the front portion thereof and at its other end to the tub at a point beside the rear rack section, said rear section being substantially stationary within said tub, said system including a support rigidly secured to said cover .and extending down into pivoted engagement with said front section, said support completing said one link, whereby said one link slants from the hinged junction of said cover to the top edge of said tub downwardly to the pivoted engagement of said support with said front section when said cover is closed sufficiently to cause

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  • Washing And Drying Of Tableware (AREA)
  • Vending Machines For Individual Products (AREA)
US129598A 1961-08-07 1961-08-07 Rack system for dishwashing machine Expired - Lifetime US3087769A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
NL281810D NL281810A (de) 1961-08-07
BE621072D BE621072A (de) 1961-08-07
US129598A US3087769A (en) 1961-08-07 1961-08-07 Rack system for dishwashing machine
DEG35621A DE1201019B (de) 1961-08-07 1962-08-01 Gestell fuer eine selbsttaetige Geschirrwaschmaschine
GB29860/62A GB997916A (en) 1961-08-07 1962-08-03 Improvements in dishwashing machines
CH935262A CH394529A (de) 1961-08-07 1962-08-06 Geschirrwaschmaschine
FR906305A FR1330614A (fr) 1961-08-07 1962-08-07 Système de panier perfectionné pour machine à laver la vaisselle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US129598A US3087769A (en) 1961-08-07 1961-08-07 Rack system for dishwashing machine

Publications (1)

Publication Number Publication Date
US3087769A true US3087769A (en) 1963-04-30

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ID=22440736

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Application Number Title Priority Date Filing Date
US129598A Expired - Lifetime US3087769A (en) 1961-08-07 1961-08-07 Rack system for dishwashing machine

Country Status (6)

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US (1) US3087769A (de)
BE (1) BE621072A (de)
CH (1) CH394529A (de)
DE (1) DE1201019B (de)
GB (1) GB997916A (de)
NL (1) NL281810A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3269790A (en) * 1964-08-03 1966-08-30 Gen Electric Rack structure for dishwasher
US3292984A (en) * 1965-05-24 1966-12-20 Gen Electric Rack system for dishwashers
US3310354A (en) * 1965-03-26 1967-03-21 Gen Electric Rack system for automatic dishwasher
US3321261A (en) * 1965-04-22 1967-05-23 Gen Electric Rack system for automatic dishwasher
US3322479A (en) * 1965-03-26 1967-05-30 Gen Electric Rack system for automatic dishwasher
DE1265931B (de) * 1963-11-13 1968-04-11 Whirlpool Co Radanordnung fuer ein verfahrbares Gestell, insbesondere in Geschirrspuelmaschinen
US3390930A (en) * 1966-12-14 1968-07-02 Westinghouse Electric Corp Rack mechanism for automatic dishwasher
US9282877B2 (en) 2012-03-21 2016-03-15 Whirlpool Corporation Dishwasher with a pivot system for a dish rack

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5115822A (en) * 1991-03-20 1992-05-26 Nichols Will E Dishwasher basket assembly including lift mechanism
GB0103403D0 (en) * 2001-02-12 2001-03-28 Steadman William D Elevating split-lazy susan cupboard
DE102015208909A1 (de) * 2015-05-13 2016-11-17 BSH Hausgeräte GmbH Geschirrspülmaschine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US993469A (en) * 1910-10-24 1911-05-30 George Stocker Trunk.
US1652984A (en) * 1926-08-27 1927-12-13 Estell M Hixson Tool box
US1987018A (en) * 1933-09-11 1935-01-08 Lane Company Inc Cedar chest
US2038950A (en) * 1933-04-13 1936-04-28 Moore Corp Reversible stove construction
US2119313A (en) * 1937-03-29 1938-05-31 Robert H Burdge Cosmetic case
US2124071A (en) * 1936-06-10 1938-07-19 Lane Company Inc Chest
US2149114A (en) * 1935-04-25 1939-02-28 Reconstruction Finance Corp Refrigerator
US2360514A (en) * 1944-02-18 1944-10-17 Joseph H Orley Refrigerator box

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740545C (de) * 1940-10-25 1943-10-22 Bolinder S Fabriks Aktiebolag Geschirrwaschmaschine mit einem den Spritzraum verschliessenden aufklappbaren Deckel

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US993469A (en) * 1910-10-24 1911-05-30 George Stocker Trunk.
US1652984A (en) * 1926-08-27 1927-12-13 Estell M Hixson Tool box
US2038950A (en) * 1933-04-13 1936-04-28 Moore Corp Reversible stove construction
US1987018A (en) * 1933-09-11 1935-01-08 Lane Company Inc Cedar chest
US2149114A (en) * 1935-04-25 1939-02-28 Reconstruction Finance Corp Refrigerator
US2124071A (en) * 1936-06-10 1938-07-19 Lane Company Inc Chest
US2119313A (en) * 1937-03-29 1938-05-31 Robert H Burdge Cosmetic case
US2360514A (en) * 1944-02-18 1944-10-17 Joseph H Orley Refrigerator box

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1265931B (de) * 1963-11-13 1968-04-11 Whirlpool Co Radanordnung fuer ein verfahrbares Gestell, insbesondere in Geschirrspuelmaschinen
US3269790A (en) * 1964-08-03 1966-08-30 Gen Electric Rack structure for dishwasher
US3310354A (en) * 1965-03-26 1967-03-21 Gen Electric Rack system for automatic dishwasher
US3322479A (en) * 1965-03-26 1967-05-30 Gen Electric Rack system for automatic dishwasher
US3321261A (en) * 1965-04-22 1967-05-23 Gen Electric Rack system for automatic dishwasher
US3292984A (en) * 1965-05-24 1966-12-20 Gen Electric Rack system for dishwashers
US3390930A (en) * 1966-12-14 1968-07-02 Westinghouse Electric Corp Rack mechanism for automatic dishwasher
US9282877B2 (en) 2012-03-21 2016-03-15 Whirlpool Corporation Dishwasher with a pivot system for a dish rack
US10123677B2 (en) 2012-03-21 2018-11-13 Whirlpool Corporation Dishwasher with a pivot system for a dish rack
US10178938B2 (en) 2012-03-21 2019-01-15 Whirpool Corporation Dishwasher with a pivot system for a dish rack
US11116380B2 (en) 2012-03-21 2021-09-14 Whirlpool Corporation Dishwasher with a pivot system for a dish rack

Also Published As

Publication number Publication date
BE621072A (de)
NL281810A (de)
DE1201019B (de) 1965-09-16
GB997916A (en) 1965-07-14
CH394529A (de) 1965-06-30

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