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Патент USA US3080884

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March 12, 1963
B. L. BRUCKEN
3,080,874
DISHWASHER
Filed July 27, 1959
4 Sheets-Sheet l
.7
i
- g?
302
INVEN TOR.
Byron Z. Bracken
BY“
W¢¢w
H15’ ATTORNFY
March 12, 1963
B. |_. BRUCKEN
3,080,874
DISHWASHER
Filed July 27, 1959
4 Sheets-Sheet 3
INVENTOR
Byron Z. Bra cken
‘H13 arromwsy
March 12, 1963
B. |_. BRUCKEN
3,080,874
DISHWASHER
Filed July 27, 1959
4 Sheets-Sheet 4
INVEN TOR.
Byron Z . Bracken
BY“
HIS ATTORNEY
United States Patent C) ice
1
3,080,874
DISHWASI-ER
Byron L. Brucken, Dayton, Ohio, assignor to General
Motors Corporation, Detroit, Mich, a corporation of
Delaware
Filed July 27, 1959, Ser. No. 829,695
9 Claims. (Cl. 134—115)
This invention relates to a domestic appliance and more
3,080,874
Patented Mar. 12, 1963
2
FIGURE 3 is a sectional view taken [along line 3-3 in
FIGURE 1 showing the selectively positioned door hinge
in its pivot position;
FIGURE 4 is a view similar to FIGURE 3 with the
door hinge in its slide position;
FIGURE 5 is a sectional view taken along lines 5-5
in FIGURE 1 to show the door slide track;
FIGURE 6 is a fragmentary diagrammatic showing of
the dishwasher with the doors in a French-door arrange- '
particularly to an improved dishwashing machine.
10 ment;
One of the problems in the dishwashing art centers
FIGURE 7 is a view similar to FIGURE 6 with the
around the requirement for providing the dishes with a
doors in a slidably mounted leftward opening;
preliminary cleaning or scrapping prior to the dishwash
FIGURE 8 is a view similar to FIGURE 6 with the
ing cycle. In presentaday practice, this procedure requires
doors in a slida-bly mounted rightward opening position;
an additional waste disposer generally at the kitchen 15
FIGURE 9 is a fragmentary sectional View taken along
sink. Thus, dishes and-utensils to be washed must be
line 9-9 in FIGURE 2 to show the motor mounting ar
transported ?rst to the sink for scraping or preliminary
rangement for the dishwasher of this invention;
cleaning and then to the dishwasher for the washing
FIGURE 10‘ is a ‘fragmentary sectional view taken
process. Further, the prior ‘art is directed primarily to
along line 10—10‘ in FIGURE 9 to show the manner in
dishwashers which are designed for under-counter instal 20 which the spray tube is connected to the motor;
lation. This requires the operator thereof to bend over or
FIGURE 11 is a fragmentary sectional view of the
stoop while loading the dishwashing apparatus. This in
vention is directed to overcoming these and other problems
in the dishwashing art.
spray tube and comminuting impeller arrangement of this
invention;
FIGURE 12 is a fragmentary sectional view taken
Accordingly, it is an object of this invention to com 25 along line 12-12 in FIGURE 11 to show the rotation
bine a waste disposer with a dishwasher.
responsive valve mounting arrangement with said spray
It is "another object of this invention to provide a dish
tube; and
washervwhich may be mounted in an above-the-counter,
‘ FIGURE 13 is an enlarged showing of a control dial
on-the-wall position.
,
suitable for use with this invention.
Another object of this invention is the provision of 30
In accordance with this invention and with reference
doors for a dishwashing cabinet which may be cus
to FIGURES 1 and 2, a dishwasher 10 is comprised of a
tomer ‘adapted for the desired pivotal movement.
cabinet having a front opening 12, side Walls 14 and 16,
It is another ‘object of this invention to provide a dish
a rear wall 18 and a bottom wall 20‘. The opening 12
washer with a drain or diverter valve which is selectively
is sealed in a conventional manner and closed by a pair
positioned in response to the movement of the water dis 35 of doors 22 and 24 operable by any suitable handles such
tributing means for said dishwasher.
‘as 26. This invention contemplates a mounting arrange
A more particular object of this invention is the pro
ment for the vertically pivoted doors 22 and 24 which
vision of a vertically mounted spray tube ‘for a wall
provides for user preselection of the most desired or con
mounted cabinet type dishwasher.
venient hinging arrangement. This novel hinging ar
Another more speci?c object of this invention is the 40 rangement is especially signi?cant in a wall-mounted or
provision of a waste disposer operated by the selective
above~the-counter dishwasher such as 10 and will be
rotation of said spray tube.
described more fully hereinafter.
A still more speci?c object of this invention is the provi
For distributing water in the dishwashing chamber 28,
sion of a dishwasher having a disposer connected thereto
a vertically mounted hollow spray tube 30 is provided.
and a spray tube having a comminuting impeller which is 45 Spirally arranged on the spray tube are a plurality of slots
e?fective when said spray tube in rotated in one direction
or water distributing apertures 32 which communicate
to comminute waste and which is elfective when said
with the interior 83 of the tube. Thus, as the spray tube
spray tube is operated in another direction to pump wash
30 is rotated, water issuing from the slots 32 will be effec
ing ?uid to said spray tube.
tively sprayed upon dishes 34 held in racks 35 positioned
Another object of this invention is the provision of a 50 on the rear wall 18‘ of the dishwasher and on cups or
valve for a dishwasher which operates in response to the
glasses racks 36 carried by side walls 14 and .16. The
rotation of said spray tube to selectively direct water to
close proximity of the vertical spray tube to the dish
said spray tube or to a drain.
ware in this wall-type dishwasher 10 eiiects a superior
Further objects and advantages of the present inven
washing result to that accomplished in the conventional
tion will be apparent from the following description, ref 55 under-counter type. Further, wall space is frequently
erence being had to the accompanying drawings wherein
available to accommodate a dishwasher where ?oor space
preferred embodiments of the present invention are clear
is not. It should be noted, however, that the dishwasher
ly shown.
In the drawings:
of this invention may also be’ installed on the counter
or under the counter.
FIGURE 1 is a front elevational view with parts 60
At the top of the dishwasher 10 and with reference to
broken away to show the wall-cabinet type dishwasher of
FIGURE 9, a motor housing 46 is carried by a top wall
this invention;
40 of dishwasher 10. More particularly, the mounting
FIGURE 2 is a top elevational view of the dishwasher
arrangement is shown to include a, shoulder 44 as an an
in FIGURE 1 shown built into a wall;
nular recess or inset in the top wall 40 of the dishwasher.
3,080,874
3
4
The motor housing 46 may be of a die cast material and
about this point. The bottom pivot assembly 94 would,
includes a plurality of openings 50 to permit cooling air
of course, be similarly positioned. FIGURE 4, on the
other hand, shows the bolt 92 in its lower position and
adapted thereby for slidable movement in the track 102 in
order to effect the side opening position of FIGURE 7.
to reach a reversible motor 42. The housing or casting
46 includes four radially directed integral extension tabs
or cars 52 which are nested in a similar number of shock
absorbing mounts 48. To retain the tabs 52 and the shock
absorbers 48 on the shoulder 44 of the dishwasher wall
40, four straps 54 are adapted to overlie the shock ab
The track 102 is molded or formed in a plastic or nylon
piece 112 which is retained in a U-shaped inwardly bent
portion 114 formed along the top of opening 12 in the
front wall of the dishwasher 10. This track con?gura
shoulder 44 by any suitable fastening means such as bolts 10 tion thereby lies in juxtaposition to the top wall 90 of
the door 22 when the door is closed. When the user
56. The motor 42 includes a stator 58 which is press-?t
would like a French-door opening such as FIGURE 6, the
into a notch or annular seat 60 in a depending cylindrical
bolts 92 at top and bottom of each door 22, 24 will be
wall 62 of the housing 46. A press-?t is also used for a
threaded into engagement with the ports 100. Thus,
motor shaft bearing 64- which seats within a cylindrical
retainer portion 66 of the housing 46. From the bearing 15 the doors 22, 24 will be pivotally opened sidewardly.
Where the user desires a folding door arrangement such
64 a motor shaft 68 projects downwardly and outwardly
as FIGURE 7 the bolt 92 is threaded downwardly out of
through an opening 70 in a shield or motor protector 38.
engagement with port 100 and into engagement with the
The shield 38 serves to limit the ingress of water to the
track 1&2. At the same time, a pivot pin 103 is inserted
motor housing. At this point, the motor shaft 68 is with
in the dishwashing chamber 28 and the spray tube 30 is 20 between the edges of doors 22 and 24 so that the two
doors are pivotally connected to each other. Then the bolt
attached thereto as described next following.
arrangement 94 for door 24 is positioned as in FIGURE 3.
With reference now to FIGURES 9 and 10, a ?exible
In this fashion the door 24 is pivoted to the dishwasher 10
coupling assembly 72 is shown press-?t upon the lower
while the door 22 is slidably connected to the dishwasher
end of motor shaft 63. The ?exible coupling 72 has an
outer cylindrical metal portion 74 with a plurality of bent 25 1t) and pivotally connected to the door 24. If the ar
rangement of FIGURE 8 is desired, merely follow the
over tabs 76 which cooperate with notches 78 in the top
reverse of the procedure described in connection with
of the spray tube 39. An annular washer of resilient or
FIGURE 7.
shock absorbing material 80 lies between the outer cylin
sorbed and the tab and to be fastened to the recessed
A major concept of this invention is directed to the
der 74 of the flexible coupling and the inner press-?t por
tion 71. This permits relative movement within the cou 30 provision for a disposer in combination with a dishwash
ing apparatus. The concept, however, is not directed to
pling and provides for a universal tolerance in aligning the
the mere attachment of a conventional waste disposer to
spray tube 36 with the motor shaft 68. The spray tube has
a conventional disposer, but to an arrangement whereby
merely a sliding ?t over the outer wall 74 of the ?exible
an impeller is utilized to selectively comminute waste or
coupling. Thus, for maintenance and servicing the spray
tube 60 may be dropped off of the coupling 72 simply by 35 to pump water to a spray distributing device or to a drain.
In this regard, reference may be had to FIGURE 11
wherein the bottom wall 29 of the dishwashing chamber
It should be apparent that a wall-mounted dishwasher
28 is shown with a recessed sump portion 120. The
may be placed in many positions within a kitchen, only
pulling the spray tube downwardly.
recessed portion 12% terminates in a turned-down collar
some of which will be suitable for door opening in any
one ?xed pattern. For this purpose, this invention con 40 or sump outlet 122 which underlies a plastic base portion
124 of a wire mesh strainer 126. The strainer 126 has a
templates a door arrangement shown in FIGURES 3, 4, 5,
top wall 128 with a central opening 139 through which
6, 7 and 8 which may be adaptable to any kitchen arrange
the spray tube 3% projects. A plurality of radially di
rected vanes 129 integral with the base 124 serve to sup
ment whereby the doors open separately to each side of
the dishwashing cabinet. FIGURE 7 shows the doors 45 port the top 28 and thus the screen or strainer portion
126. The strainer 126 is adapted for a raised position
22 and 24 pivotably connected to each other along one
wherein spring tabs 132 on the spray tube 30 are adapted
edge and with door 22 slidably mounted at one edge
to cooperate with the opening 130 on the top wall 128 of
thereof to the dishwashing cabinet. On the other hand,
the strainer. When the strainer is raised, the spring tabs
FIGURE 8 shows the same arrangement with the door
22 ?xed pivotally and with the door 24 pivoted to the 50 132 will releasably retain the strainer in a raised position,
thereby removing the strainer from blocking obstruction
door 22 and slidably connected at the other edge thereof
of the outlet opening 122 rom the sump 12%. In this
to the dishwashing cabinet. The user may preselect any
raised position waste material may be placed into the
of the desired door openings at the time of original in
sump to be washed directly into the comminuting device.
stallation and a simple manipulation of the novel hinge
55 The strainer 126 has a normally seated position during
arrangement of this invention is all that is needed.
a dishwashing operation and serves thereby to ?lter waste
The preselectable hinge arrangement will be described
particles from the water being recirculated within the
more particularly with reference to FIGURES l, 3 and
dishwashing chamber 28. However, when the device is
4. The dishwasher door 22 is formed with a top wall
used to comminute or disintegrate small Waste particles
90 and a bottom wall 92. These walls 90 and 92 may be
formed by a bent-over portion of the front panel of door 60 at the beginning or prior to a dishwashing cycle, the
strainer 125 is raised‘ so that the waste particles may fall
22 as seen clearly in FIGURES 3 and 4. The opposite
through the sump outlet 122 into the comminuting ar
or left-hand door ‘24 is constructed in similar fashion so
rangement as will be described more fully next following.
the description with reference to 22 should be considered
Beneath the recessed portion or sump 120, a com
identical to that for door 24. At the top and bottom cor
ners of each door 22 and 24 are located hinge pivot as 65 minuting and pump housing 136 is disposed. To retain
the housing 136, a plurality of studs 133 may be fastened,
semblies shown generally at 94 in FIGURE 1, the
as by welding, to the underside of the sump 120. The
bottom being an inverted copy of the top. The hinge pivot
studs 138 then extend through a radially outwardly
94 includes a ferrule 96 attached to the top wall 90 of the
directed ?ange 140 on the comminuting housing 136. In
door 22, a bolt portion 92 which is threadably engaged
with the ferrule 96 and a lock nut 98 threadably engaged 70 terposed between the sump 129 and the housing 136 is
an annular seal 14-2 which absorbs vibrations and noise
on said bolt 92. ‘In this arrangement the bolt ‘92 may be
as well as provides a water-tight ?t between the com
threaded upwardly sufficiently to selectively engage either
minuting and pump housing 136 and the dishwasher
a pivot port 1001 or a slide track 102. In FIGURE 3, for
sump. Within the housing 136 and spaced therefrom is
instance, the bolt 92 is shown in its upper position en
gaged with the port 100 and thus pivoting the door 22 75 a shredder ring 144. The shredder ring 144- is formed
ment. ‘For instance, FIGURE 6 shows a door arrange
3,080,874
5
with .a central cylindrical collar 146 and an upstanding
tion 182 which has a relatively coarse thread. A guide
or retainer 188 is provided through which the thread 182
is adapted to move relatively. ‘On the top of the guide
radially outwardly directed ?ange .148 which seats
within the seal 142 to space. the shredding ring from the
housing 136 and the sump 120. The collar 146 com
municates with the hollow interior 33 of the spray tube
188 a piece of metal wire 198 or the like is af?xed to
form a thread which cooperates with the coarse threads
of the screw 182 during relative rotational movement of
spray tube and screw to cause the valve 174 to move up
and down in response to the rotation of the spray tube
to direct wash ?uid thereto as will be understood more
fully hereinafter. At the outerperipheral edge 147 of the
annular cup-shaped shredder ring 144 are a plurality of
apertures 150 through which all ?uid and Waste flow
38. This, of course, requires that the guide 183 and nut
10 1% be held ?xed axially relative to the spray tube 30.
An impeller 152 is positioned within the shredder ring
For this purpose, a pair of spring retainers 192 and 194
when. leaving the dishwasher sump 120".
>
are inserted through diametrically opposite slots 184 and
144 and adapted with its outer edges in juxtaposition to
the shredding apertures 158. The impeller 152 is carried
by the spray tube 30 and fastened thereto ‘as at 154 by
any suitable means such as by welding. A cylindrical
bearing of nylon or other suitable material is supported
by the upstanding collar‘146 on the shredder ring. The
bearing 156 has a top portion. 158 which cooperates with
186 in the spray tube. The guide 188 has a central
gnoove or channel 193 of substantially the same width as
15
the spring retainers 122 and 194. Thus, the spring re
tainers reside within the groove to retain the nut portion
196 in ?xed axially relationship to the spray tube. It
should now be seen that relative notational movement
between the nut portion 198 and the screw 182 will cause
an annular shoulder 16% on the impeller. Thus, the bear
ing 156 takes the downward thrust of the spray tube 30‘, 20 the valve assembly 174 to move relatively to the guide
journals the tube for rotational movement and also serves
188.
to position the impeller 152 adjacent the shredding aper
Although the inertia of the valve assembly 174 could
tures 150. In addition to the spacing of the shredder ring
be used to hold the valve at rest during initial rotation ‘of
‘144 afforded by the seal 142, a plurality of radially di
the spray tube 38, the valve portion 17 6 is provided with
rected vanes 168 are generally radially positioned be 25 tabs 196 which engage adjacent stator vanes 160 to pre—
tween the shredder ring 144‘ and the comminuting and
vent rotation of the valve assembly 174. With this re
pump housing 136. Bent over tabs 1.45 on the vanes
may be used for a weld attachment to the bottom of the
shredder ring .144. These vanes serve to remove the
lationship and with reference to FIGURE 12, a counter
clockwise rotation of the spray tube 30 will cause the
screw 182 to thread itself upward to the phantom line
centrifugal action or turbulence from the water thrown
outwardly by the impeller 152 and convert the ?ow to a
position shown in FIGURE 11. Conversely, a clockwise
rotation of the spray tube 36 will permit the screw 182 to
smoothly running condition. The housing 136 is formed
thread itself downwardly into blocking engagement with
with a generally conical bottom wall 164 which has a
the drain conduit outlet 180. During this relative move
central opening 166 therein. ‘Connected to this central
ment of the valve assembly 174 and spray tube 30, the
opening is a drain conduit ?tting 168 to which any suit 35 spring retainers 192, 194 and the guide 188 act as a clutch
able drain connection or conduit 170 may be connected.
or torque limiting device. That is, when the valve por
Thus, it should be seen that water or waste placed within
tion 176 is in engagement with the bottom wall 144 of
the dishwashing chamber 28 will fall from the sump
the shredder ring, the guide 188 will cease rotational
through the outlet opening 122 into the waste disposing
movement relative to the thread 182 and rotate within
shredder ring or cup 144. From this point, the waste 40 the spring retainers 192, 194 so long asthe spray tube 30
and ?uid will be forced radially outwardly through the
is being rotated. The same type of valve action, of
shredding apertures 150 into the space 172 between the
course, will apply with regard to the valve portion 178.
‘shredding ring and the comminuting housing. During
seated on the drain outlet 18%). When the spray tube ro~
this action the waste will be comminuted or reduced to
tates in one direction, the drain opening 180 is blocked
?ne particles by the interaction of the impeller blade tips 45 while a reversal of rotation opens the drain. 'It should
and apertures 150. With the impeller 152 being rotated
now be seen that an extremely simple valve has been de
the comminuting housing serves as a centrifugal pump
vised whereby water is selectively directed to either the
and water is forced outwardly into the passageway 172
spray device or to drain in response to the rotational
between shredder ring 144 and the housing 136. In the
movement of a water distributing device.
passageway 172 the water will ?ow toward the drain
conduit ?tting 168 or to the spray tube 30, the ?ow being
straightened and made more smooth by the presence of
With the foregoing components combined in the novel
manner of this invention, a dishwasher 10 has been de
vised which is effective to dispose of the waste material
the stator vanes or baffles 160. The action of the im
‘found generally on soiled dishes. With this invention, it
peller 152, is. comminuting waste or recirculating wash
is not necessary to remove the dishes for scraping to a
ing fluid, will be regulated by the action of a valve as 55 disposal area prior to the dishwashing cycle. The dishes
may simply be placed within the dishwasher with the soil
'sembly shown generally at 174 (FIGURE 11) which
operates in response to the rotation of spray tube 38 as
left thereon and the dishwas'hing cycle initiated. In op
eration, a combination dishwashing and disposing cycle
‘will be described next following.
The function of the valve 174 is to selectively direct
the output from the sump 128 either to the spray tube ‘ 60
30 during a dishwashing cycle or to the drain conduit ?t
‘ting 168 during a waste disposing or drain cycle. In
view thereof the valve assembly includes a raised position
shown in phantom line on FIGURE 11 wherein the pas
sageway formed by the shredder ring collar 146 is
blocked by the spray tube valve portion 176. Valve por
will be accomplished as follows.
The dishwasher 10 is provided ‘with a conventional
timer mechanism 200 having a dial 282 seen more clearly
in FIGURE 13. A complete cycle may consist of a dis—
posing or comminuting operation as indicated at 204 and
a washing operation as indicated at 206 on the dial, the
dishwashing cycle including conventional cycle portions
of wash, rinse and dry. This invention also contemplates
tion 176 may be resilient if desired or may carry a re
the use of the combination disposer and dishwasher 10
silient seat to improve sealing characteristics. The valve
174 also carries a resilient valve portion 178 which seats
upon an opening 180 at the inlet to the drain conduit 168
as shown in FIGURE 11 in solid line. Thus, the Valve
174 is raised during draining or comminuting andlow
for a waste disposal or comminution operation alone.
For this purpose, the disposing segment 204 of the timer
dial 282 may be initiated as at 208 and concluded as at
210. However, where a dishwashing cycle is to include
both the initial disposing cycle as well as the dishwashing
‘cycle, an auxiliary switch 212 may be provided to over
ride the stop point 210 and to cause continuous disposing
cred during a recirculating ?uid dishwashing cycle. To
accomplish this axial movement relative to the spray tube
.30, the valve member 174 is provided with a screw por
(is
and dishwashing operations.
3,080,874.
'8
In operation, the soiled dishes and utensils are re
‘eration ‘by the strainer 126. This is effective to eliminate
moved to the dishwasher 10 and the doors 22, 24 thereof
the small portions of soil which were not comminuted
opened to permit access to the dishwashing chamber 28.
during the initial disposing process. The strainer, of
The dishes 34 are suspended in the racks 35 and the cups
course, may be cleaned subsequent to the dishwashing
and glasses are generally contained in the racks 36 along", m cycle.
the side walls of the dishwasher 10. Prior to inserting
After one or more washing or water distributing cycles,
the dishes and cups within the racks, the primary debris
the timer 200 initiates a rinsing procedure wherein the
may be scraped into the sump 120. This is generally ac
valve 216 is energized to permit the admission of clean
complished by raising the strainer 136 until it is retained
water. After a timed ?ll period, the valve 216 is deener
in an upper position upon spring tabs 132. This permits .10 gized and the motor 42 energized in a clockwise spray
clear passage for the waste and soil particles to fall into
tube direction to set up a rinse spray cycle. This is sub
the comminuting housing 136 beneath the sump outlet
stantially the same as the washing procedure with the
122. Note however that only the major soil need be
exception that detergent is omitted. With the motor 42
placed directly into the comminuting housing itself. The
operating in one direction, the drain conduit will be
minor soil may be left on the dishes and will be caught 15 covered and with the spray tube in reverse direction the
and retained by the strainer 126 since the strainer is
water flow to the spray tube will be blocked. In view
again seated over the sump outlet 122 prior to initiating
‘of the frequent reversals of the motor, it should be under
a dishwashing cycle. The dishwashing cycle will be
stood that the timer 200 will provide a pause interval to
initiated when the timer 200 controls a valve 216 to per- '
permit reenergization of the motor in a reverse direction.
mit a How of water from a domestic water supply to a 20
After the rise cycle, any convenient drying cycle may
conduit 218 into the dishwashing chamber 28.
be initiated. For instance, a heater (not shown) may be
The ?rst or disposing portion of the complete dish
positioned within the dishwashing chamber and energized
washing cycle will ?nd the motor 42 energized to cause
to aid in the drying of the dishes subsequent to the dish
the spray tube 30 to rotate counterclockwise (as viewed
washing cycle. After a timed drying period, the com
in FIGURE 12). ‘In this direction of rotation, the valve 25 bination disposing and dishwashing cycle is terminated.
assembly 174 will be placed in its raised position to pre
The doors 22, 24 may be opened and the clean and dry
vent water from entering the hollow interior 33 of the
spray tube 30. At the same time, and since the impeller
152 is attached to the spray tube 30, water will be pumped
dishes removed to a convenient storage place. How
ever, note that the wall-mounted dishwasher 10 of this
invention permits for easy storage within a raised easily
outwardly from the shredding ring along with the waste 30 accessible position within the dishwasher.
material scraped into the sump. The interaction of the
In addition to the combined disposing and dishwashing
impeller tip and shredding ring apertures 150 will effec—
cycle described above, this invention contemplates simply
tively comminute the waste which will then be pumped
a waste disposal conveniently accessible to the operator.
through the drain opening 180. After a predetermined
In this respect, and with the doors 22 and 24 opened, any
period, approximately four or ?ve minutes, the timer 206’ 35 small amount of soil may be scraped into the sump 120
will reverse the rotation of the motor 42 to cause the
with the strainer 126 held in its raised position. The timer
spray tube 30 to rotate in a clockwise water distributing
202 may be placed in position 203 to initiate the disposing
direction. Water ‘will continue to be admitted to the
operation. This establishes a water supply period where
sump 120 for a timed interval by the energization of the
in water is admitted through conduit 218 to ?ush the
valve 216 until the desired amount of washing fluid is 40 waste through the sump opening 122 into the comminuting
placed within the dishwashing chamber 28. An auto
housing 136. Valve 174 will be retained in a raised posi
matic detergent dispensing operation may be accom
tion to open the drain during the disposing operation. At
plished at this time if desired. Next, the timer will de
the end of a timed period, the motor 42 will be deener
energize the water valve 216. The motor 52 will con
gized to terminate the disposing operation as at point 210
‘ tinue to be energized for a period of dishwashing wherein 45 on the timer dial 202.
the detergent placed within the dishwashing chamber and
It should now be seen that an improved dishwasher has
the washing fluid will be thoroughly distributed through
been devised wherein a slim depth cabinet arrangement
is adapted for wall hanging. This raised position elimi
and cups held in spaced relationship within the dishwash
nates stooping during loading operations and further pro
ing chamber. The same impeller 152 which cooperated 50 vides for simpli?ed dishwasher installation in positions
with the shredding apertures 150 during the disposing op
otherwise inaccessible. Further, the costly and trouble
the distributing ports 32 over the surface of the dishes
eration serves to pump and recirculate the cleansing ?uid
during the distribution period. Water will flow through
some solenoid operated drain or diverter valve has been
eliminated. In its place a simple valve has been provided
the strainer 126 and the sump outlet 122 into the shredder
which is responsive to motor operation within the appli
ring 144 which then becomes a centrifugal pump housing. 55 ance. This trouble-free valving arrangement eliminates
Water will be forced radially outwardly through the aper
the problems of ?ooding and of valve malfunction. Still
further an appliance has been provided which will dis
pose of small amounts of soil remaining on dishware. In
tioned between the shredder ring 144 and the comminut
this way, a double function of scraping and washing has
ing housing 136 serve to re?ne the turbulence into a 60 been eliminated. The device has been further improved
smooth flow which is channeled thereby toward the collar
in utilizing an impeller which when operated in one direc—
146 in the central portion of the shredder ring. Note
tion will comminute and which when operated in another
that the clockwise rotation of the spray tube 36} has caused
direction will pump water in a dishwashing cycle. Lastly,
the screw 182 to rotate relatively to the nut 190 to cause
and with an eye toward convenience in this novel improved
a seating of the valve portion 173 over the drain outlet 65 appliance, the front opening doors thereof are provided
180. Washing ?uid is thus pumped upwardly into the
with preselectable positioning. With the applicant’s in
hollow interior 33 of the spray tube 32 from which point
vention the operator may achieve a French-door arrange
it is sprayed outwardly. The washing cycle is terminated
ment or slidably arranged side opening doors. Note
tures 150 into the passageway 172. Turbulence at this
point will be considerable and the stator vanes 160 posi~
when the timer 2410 again reverses the motor 42 to cause
further that the improved vertically mounted spray tube
counterclockwise rotation of the spray tube 30. As afore
of this invention places the jets of cleansing water in close
said, counterclockwise rotation is accompanied by a .70 proximity to the soiled dishes placed thereabout. In this
blocking of the spray tube by the valve portion 176.
fashion, an improved dishwashing cycle is accomplished
Soiled wash water is then directed through the drain con
along in an apparatus that is simple, versatile and easy to
duit 168 to any convenient sanitary sewer. Note that the
washing operation is subject to a continuous ?ltering op
service.
While the embodiments of the present invention as
3,080,874
,
10
herein disclosed, constitute preferred forms, it is to be
understood that other forms might be adopted.
to comminute waste, and when said spray tube is rotated
What is claimed is as follows:
1. A combination dishwasher and waste disposer com—
prising, a cabinet forming a dishwashing chamber, a ver
tical ?uid spray tube in said cabinet having an inlet, and
6. A washing apparatus comprising, a cabinet forming
a washing chambena ?uid pump housing having a drain
in said one direction to pump said ?uid to said spray tube.
and an inlet connected to said chamber, rotatable im
peller means in said housing, valve means in selective ?uid
means for selectively, reversibly rotating said spray tube,
?ow blocking relationship with said drain and movable
said cabinet having a sump with a drain aperture therein,
between a drain open position and a drain closed position
a waste disposing housing connected to said drain aper
in response to impeller rotation, and means for rotating
ture, a shredder ring in said housing having a plurality of 10 said impeller in one direction to move said valve means
shredder apertures and a central passageway in series
to said drain closed position and to distribute said ?uid
?ow relationship with said spray tube inlet, a drain con
in said washing chamber and in another direction to move
duit leading from said disposing housing, a valve means
said valve means to said drain open position and to pump
movable responsive to said spray tube between a ?rst posi—
said ?uid to said drain.
tion closing said drain conduit and a second position 15
7. In combination, a dishwasher having a cabinet en
closing said passageway, and an impeller rotatably carried
closing a dishwashing chamber, a bottom wall for said
by said spray tube within said shredder ring, said impeller
chamber forming a sump, a pair of doors selectively pivot
being adapted to cooperate with said shredding apertures
able to said cabinet, a hollow vertically mounted spray
to comminute waste and drain said chamber when rotated
tube in said dishwashing chamber, a reversible motor for
in one direction with said valve means in said second 20 selectively rotating said spray tube and mounted in a top
position, and said impeller being adapted to pump said
portion of said cabinet, said spray tube having an upper
?uid to said spray tube when rotated in another direction
spray portion, a comminuting housing connected to said
with said valve means in said ?rst position.
sump and having a shredder ring mounted in said housing,
2. A dishwasher comprising, a cabinet forming a dish
an impeller carried by said spray‘ tube and cooperating
washing chamber, a spray device in said chamber for dis 25, with‘ said shredder ring to comminute materials from said
tributing a ?uid, a drain conduit from said chamber for
sump, a drain conduit leading from said comminuting
draining said ?uid, a valve means relatively movably
housing, said shredder ring de?ning a central passageway
connected to said spray device and movable responsive to
connecting with the hollow portion of said spray tube,
said spray device between a ?rst position wherein said ?uid
a valve member movable relatively to said spray tube and
distributing is blocked and a second position wherein said 30 located ‘between said central passageway and said drain
?uid draining is blocked, and means for operating said
conduit, said valve member movable responsive to the
spray device in one manner for distributing and in another
rotation of said spray tube, and means for controlling said
manner for draining whereby said valve means is selec
motor to rotate said spray tube in one direction to cause
tively moved into one of said positions in response to
said valve to close said drain conduit and in another direc
said operation.
tion to cause said valve to close said passageway, thereby
3. A washing apparatus comprising, a cabinet forming
a Washing chamber, a distributing device in said cabinet
for distributing a ?uid, a drain conduit from said cabinet
for draining said ?uid, a valve means connected to said
distributing device and movable responsive to said dis
tributing device between a ?rst position wherein said dis
tributing is suspended and a second position wherein said
draining is suspended, and means for operating said dis
tributing device in one manner for distributing and in
another manner for draining whereby said valve means
is selectively moved into one of said positions in response
to said operation.
4. A dishwasher comprising, a cabinet forming a dish
washing chamber, a vertically mounted spray tube in said
chamber having an inlet opening, a drain conduit from
said chamber, a valve means carried by said spray tube
and relatively movable therewith, said valve means mov
able responsive to said spray tube between a ?rst position
‘wherein said inlet opening is blocked and a second posi
tion wherein said drain conduit is blocked, and means for
rotating said spray tube in one direction ‘for dishwashing
and in another direction for draining whereby said valve
means is selectively moved into one of said positions in
response to said rotation.
5. A combination dishwasher and ‘waste disposer com~
prising, a cabinet forming a dishwashing chamber, a ?uid
spray tube in said cabinet, and means for selectively,
reversibly rotating said spray tube, said cabinethaving a
drain aperture therein, a waste disposing housing connected
to said drain aperture, means in said housing for com
minuting waste and having a passageway connected to said
spray tube, a drain conduit lead-ing from said housing, a
valve means actuated by said spray tube and movable
to selectively operate said dishwasher in a dishwashing
cycle or in a disposing cycle.
8. In combination, a dishwasher having a cabinet en
closing a dishwashing chamber, a bottom wall for said
40 chamber forming a sump, a pair of vertically mounted
doors selectively pivotable to said cabinet, a hollow verti
cally mounted spray tube in said dishwashing chamber, a
reversible motor for selectively rotating said spray tube
and mounted in a top portion of said cabinet, said spray
45 tube having a valve assembly adjacent a lower portion
‘thereof including a valve portion, a screw attached to said
valve portion and a nut for said screw relatively rotatably
attached to said spray tube but axially ?xed to said tube,
a comminuting housing connected to said sump and hav
50 ing a shredder ring mounted in said housing, an impeller
carried by said spray tube and cooperating with said shred
der ring to comminute materials from said sump, a drain
conduit leading from said comminuting housing, said
shredder ring de?ning a central passageway connecting
55 with the hollow portion of said spray tube, said valve por
tion located between said central passageway and said
drain conduit, and means for controlling said motor to
rotate said spray tube in one direction to cause said screw
to move downwardly relative to said nut to close said drain
60 conduit and in another direction to cause said screw to
move upwardly relative to said nut to close said passage
way, thereby to selectively operate said dishwasher in a
dishwashing cycle or in a disposing cycle.
9. A ?uid distribution apparatus comprising, means
65 forming a ?uid distribution chamber, movable distributing
means for distributing a ?uid in said chamber, drain con
duit means from said chamber for draining said ?uid,
valve means connected to said distributing means in co
between a ?rst position closing said drain conduit when .
said spray tube is rotated in one direction and a second 70 operation vvith said drain conduit means and movable
position closing said passageway when said spray tube is
‘ rotated in the other direction, and an impeller rotated by
said spray tube and adapted to cooperate with said com
minuting means when said spray tube is rotated in said
other direction to pump said ?uid to said drain conduit and 75
responsive to the motion of said distributing means be
tween a ?rst position wherein said distributing is suspended
and a second position wherein said draining is suspended,
and means for operating said distributing means in one
manner for distributing and in another manner for draining
3,080,874
12
11
wherebysaid valve means is selectively moved into one
2,783,115
of said positions in respose to said operation.
2,838,002
2,843,443
2,916,997
2,920,633
2,965,112
References Cited in the ?le of this patent
UNITED STATES PATENTS
2,367,879
2,661,750
2,729,219
2,754,835
2,775,975
Lornax _______________ __ Jan. 23, 1945
McNeil-y ______________ __ Dec. 8, 1953
Smith _________________ __ Jan. 3, 1956
Casady _______________ __ July 17, 1956
Andrews _______________ __ Jan. 1, 1957
York ________________ .._ Feb. 26, 1957
Cohen _______________ __ June 10, 1958
Martin ..> _____________ __ July 15, 1958
Terrie __2 _____________ __ Dec. 15, 1959
Shepherd _____________ __ Jan. 12, 1960
Getehell et al __________ __ Dec. 20, 1960
FOREIGN PATENTS
10
901,500
1,142,593
France ________________ __ Nov. 6, 1944
France ________________ __ Apr. 1, 1957
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