US2267003A - Dishwashing machine - Google Patents

Description

ffy. 1

Dec. 23, 1941. G. WEBB DIsHwAsHlNG- MACHINE:

original Filed July 26,` 1937 Jlvsn't or' y @sarge Webb Patented Dec. 23, 1941 2,267,003 y g'UNITEDSTATES PAT-ENT oFFilci-z DISHWASHING MACHINE George Webb, Hartford, Conn., assignor to Colts Patent Firev Arms Manufacturing Company, Hartford, Conn., a corporation of Connecticut original application July 26, 1937, serial No.

155,607. Divided and this 'application Febru'' ary24, 1938, Serial No. 192,295

vprovide a dish washing machine of compact construction .so that the resultant machine -will y occupy aminimum of space whereby the machine vdistribution and control system. j Y

The casing is preferably formed in two sections l and 2 from stainless' steel and may be rectangular in cross section. The section! of the casing may be provided with a4 peripheral may be placed in locations where only a small 5 flange 3 which may rest upon or be secured to space can be' devoted to such a machine. a table top or other supporting means 4. The v"Another objectjis to provide adish. washing section 2 has oney or more openings 5 therein l machine in which certain parts may be readily which permit access to the interior of the casremoved to permit cleaning and inspection of ing. Doors such as shown at 6 may be slidably the machine. l l0 mounted in guideways 1, and door counterbal- Other and further objects of the invention ancing means including chains 8, pulleys 9, and will be readily appa-rent to those skilled in the s a weight I0, all of known construction, are prefart `from'the following disclosure. 4 erably provided. The dishes to be washed are Thisapplication isa division of my -co-pending preferably stacked in trays whichl may be placed application Serial No. 155,607, filed July 26, 1937. 15 in the machine" and be supported on guide In the accompanying drawing I have illustracks Il. I trated. the inventionas required. bythe statutes, Y In accordance with the invention the casing i but it will be understood that the drawing is for is provided with means for dividing the same illustrative purposes only and is not to be coninto upper and lower portions, the lower portion strued as limiting or'defining the scope of the 20 serving as a reservoir for the washing .fluid which invention', the'v claims forming a part of this is to be recirculated. Thisdividing means or specification being relied-upon for that purpose. partition preferably includes' a perforated por- In the' drawing: tion, through which the fluid, after passing 'over Fig. 1 is a frontelevation of adishwashing the dishesfmust passte return to the reservoir. machine embodying the invention, certain parts '25 In this way the'fluid to be recirculated is freed of thetcasing being broken away to show the of any refuse from'the dishes vbeing washed. The internal` construction andotherfpart's. of thel perforated portion.. may take the form of one internal construction being ,shown in dotted or more removable refuse trays, the same being lines. 'y preferably so locatedand supported that removal Fig. 2 is a plan'view of the lower section of 30 thereof. may bev easily effected. n 'the dish washing machine casing, certain parts -I have 'Ishown a casing ldividing,rneanysinorbeing omitted for clearness. y porating the above features of thisphase of the Fig. 3 is a view s'imilar to Fig.2;with all of the invention and I shall now describe the same as it parts in place; v g is the type which I now deem preferable.

Prior to the present inventions mostdishwash- 3 The dividingmeans comp'risesal substantially ing machines have been of substantial size and horizontal imperforatefportion or apron' i2fand consequently could not be used where-only a a perforate portion which, as 'shown in Fi`g. 3, limited space could be devoted to dish washing `comprises a plurality of refuse traysv I3, and such as in soda and lunch fountains,'smallkitch which is positioned in substantially horizontal ens, and other similar'places. ,These prior art 40 register withthe apron I2. The sum of the remachines were also of complicated and relatively spective areasv of the imp erforate l and perforate expensive construction which further precluded portions is such that it equals the cross sectional a more universal use. My'dishwashing machine areaof 'the casing, that is, the areas of the imis primarily intended for use. in such places as perforate and perforate portions are complehave been set forth, although-its use is obviously A" mental with respect to the area of the casing. not sc limited. As will be apparent hereinafter,` The apron I2 is preferably supported b'y brackcertain phases of the invention are susceptible ets I4 secured tothe sides of the casing, and, if of application to lany dish washing machine, and desired, one or more thumb screws I5 Amay be as to theseI mean to claim'them broadly. provided for detachably securing the apron to In 1 I have shown one formlwhicha dish "o -thebrackets The perforated portion may also washing machine incorporating the features of rest uponone. or more supports, its extending the invention may take.' machine includes,- from the side of the casing andit may also have a casing, means for supporting a tray of dishes an edge extending over the adjacent edge of to be washed, and a washing and rinsing fluid the apron to be supported thereby, I have illus- '.trated .this construction for supporting the refuse trays I3, as is apparent in Fig. 3, wherein the. forward edges- (as viewed in this ilgure) of thel of the apron I2.

refuse trys project over and rest upon the edge I have illustrated a washing and rinsing fluid vbe recirculated by the pump. After the dishes have been thoroughly washed, the lever is'm'oved to its original position which serves to return the distribution system construction which may be l advantageously used in commotion with'the already described casing construction, but I realize that the casing may be combined with distribution systems other than that shown.

The fluid distribution' system preferably in cludes discharge' heads or devices positioned above and below the dishes to be washed. Each discharge head may include a washing fluid conduit having iluoid discharge openings therein and a rinsing fluid conduit also having discharge openings therein. I now prefer to so construct each of these two heads that itmay be mounted in or removed from the casingfas a unit.

In the illustrated construction discharge heads or devices l1, I'I are positioned above andbelow the dishes to be washed. Each discharge head switch to its on position. The lever is now moved to the position in which it serves to operl.ate the valve 26 to permit the rinsing fluid to 'ow into its distribution system and be discharged over the dishes. After the dishes have been thoroughly rinsed the lever may be returned to its original position.

If desired, the operator may easily lift out the, refuse trays I3 for cleaning as the lower discharge head does not project over them. The

. apron I2 may also be easily and quickly removed.

To eifect removalof the apron, the lower discharge. head must be first removed and to do' so it is only necessary to unscrew the single threaded ring 2O and remove the discharge head unit from the casing. The apron may now be lifted out after removing the thumb screws IS. The apron, lower discharge head', and refuse trays can be reassembled in the machine by a mere includes washing iluidconduits IB and fluid conduits I9, the two conduits .each having l suitable -discharge openings therein and)being preferably secured to each other so that the'two conduits may be put in place o'r removed rom the casingasaunit. Eachoftheunitsisr'igidlyse-v cured in operative position as shown and eonnected with the proper uid distribution systemV by means of the threaded ring 2li. The dimensions of the lower discharge head unit are preferably such that the-unit does not interfere with the ready removal of the refuse traysr I3. -This construction is illustrated in Fig. 3 wherein the lower unit is shown as projecting over only the.. vIt should, of course, be understood that if some other type of discharge head construction were used in conjunction with a casapronV I2.

ing dividing means such as above described, the dimensions of the substituted construction might well also be so limited for the same reason.

means xedly mounted within the tank, a uid4 conducting means within the tank, a fluid discharge device rigidly mounted in operative posi- The washing fluid discharge conduits are suit..

ably connected with'the pipe 2li which extends upward from the bottom of the casing adjacent one side wall thereof. Secured to the bottom of the casing is la centrifugal pump 22 having its discharge outlet connected with the pipe 2| and".

its'intake connected with an outlet member 23 in the bestem of the casing. An electric mecc;- u .is provided for driving the pump. The rinsing uid discharge conducts I9 are connected to a tion in the upper portion of the casing but below the dish supporting means and opening in said `upper portion and secured to said fluid conducting 'means so as to be readily connectible thereto and disconnectible therefrom for removal from the casing, said dishsupporting means andsaid discharge device when in position being soy related as to prevent the removal from the casing of any article of substantial area from beneath said discharge device, a horizontal imperforate apron of st ibstantialn area positioned in the casing directlybelow the discharge device, said apron being removable from the casing upon detachpipe 25 extending parallelly with the pipe 2l and i being suitably connected with a valve 26 secured to the bottom of the casing. An.` operating lever 21 servesv to' selectively operate an electric switch 1 28 or the valve 2i as desired, the switch 2l serv' ing to start and stop the motor 24..

Theoperation ofthe dish washing machine will now be described,i it being assumed that the machine is properly connected with suitable sources washing iiuid discharge conduits Il, the 4fluid passes over the dishes, drains on to the apron I2 or refuse trays Il and-then passes through'the perforations inthe `trays to be `i'reed of -refuse of electrical energy and rinsing mnd. .The dishes i to be washed may be arranged in a suitable `rack which is placed in the machine and res ment and removal of the discharge device, and a perforate tray means in horizontal register with the apron` and positioned at one side of the casing so as tobe readily removable from the casingl when said discharge device is in its operative `position inthe casing, said apron and-tray means jointly A`constituting a partition' substantially coext'ensive in area'. with the horizontal area of the 2. iIna dish washing machine, the combinationof a casing having upper and lower portions, the said upper'portion having an opening in a side wall thereof permitting access to the interior of thetcasing and the said lower portion constituting a tank having bottom and side walls for the -receptio'n and storage of washing fluid, a .pair of dish rack supporting rails aligned with said opening, a fluid conducting means within the tank .device rigidly mounted in operative position in adjacent one side wall thereof. a fluid discharge the upper portion of thecasing between said dish rack supporting rails and below said opening and secured to said fluid conducting means so as to and again into the tank portion o fthe casing to 75 be readily connectible theretoand'disconnectible therefrom for removal from the casing, said dish rack supporting rails and said discharge device when in position being so vrelated as to prevent the removal from the casing of any article of' 'of the discharge device, and a perforate tray means in horizontal register with the apron and positioned at one side of thecasing so as to be readily removable from the casing when said discharge device is in its operative position in thecasing, said apronv and tray means jointly constituting a partition substantially coextensive in area with the horizontal area of the casing.

GEORGE WEBB.

Images