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Патент USA US3055039

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Sept. 25, 1962
Filed Aug. 22, 1955
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ilnited States Patent @f?ce
Patented Sept. 25, 1962
ing device, in which means is provided for lifting one or
Helen De Base, Spencer Arms Hotel, Broadway and
69th St, New York, NEE.
Filed Aug. 22, 1955, tier. No. 529,64§
9 Claims. (Cl. 15-97)
more articles of tableware out of a ?rst receptacle, and
for bringing the same into close proximity to a spraying
head from which a spray of cleaning ?uid is caused to
impinge upon the article to be cleaned, with substantial
force of stream ?ow, thus cleaning and polishing the
utensil, the spraying head being provided with a plurality
of spraying ori?ces which are directed against di?erent
This invention relates to improvements ‘in utensil and
surfaces of the utensil, and wherein the article is then
silverware cleaning and polishing devices and the like. 10 subjected to a spray of rinsing ?uid to rinse off all dirt
An object of the invention is to provide a novel and
and cleaning ?uid, and then is subjected to a blast of dry
improved device for cleaning quickly and easily, such
warmed air to dry the same, being subsequently dropped
into a ?nal receiving hopper for use.
articles of tableware as knives, forks, spoons, and the
Still another object of the invention is to provide a
Another object of the invention is to provide a novel 15 novel and improved device for automatically cleaning
and improved device whereby a plurality of eating uten
and polishing articles of tableware, which is simple in
design, inexpensive to manufacture, which has few parts,
sils, such as knives, forks, spoons and the like, are dis
and is quite e?icient in use.
posed in a hop er or receptacle after they have been
These and other objects and advantages of the inven_
used, and are removed therefrom either one by one, or
in some desired combination or plurality, and subjected 20 tion will become apparent from the following description
to successive step by step cleaning and polishing opera—
of a preferred embodiment thereof, as illustrated in the
tions automatically, being ?nally deposited in a receptacle
for cleaned eating utensils.
accompanying drawings, forming a part hereof, and in
A further object of the invention is to provide a novel
FIGURE 1 is a sectional elevational view showing a
and improved automatic eating utensil cleaning and
polishing device, in ‘which a plurality of soiled ‘knives,
composite cleaning and polishing device according to the
forks and/or spoons, are disposed in a ?rst receptacle,
being then either individually or in any desired pluraity
or sequence, grasped by a lifting device and lifted out
invention, and showing in broken lines more than one
successive position of the main prehensile boom arm.
FIGURE 2 is a top plan view on a reduced scale, of
the device shown in FIGURE 1.
of the first receptacle, being then brought into proximity 30 FIGURE 3 is a fragmentary sectional elevational view
to a cleaning and polishing head coated or impregnated
showing a modi?ed form of the invention, with spray
nozzle means for cleaning, polishing and/or rinsing.
with cleaning and polishing fluid or the like, the utensil
FIGURE 4 is a schematic circuit diagram in simpli
being rubbed or stroked against the cleaning and polish
ing head in a manner simulating the stroking motion of
?ed form of the electrical connections, it omitting for
clarity only, timing and cyclic control devices, represented
the hand when polishing and cleaning such utensils, then
here by the switches shown.
being lifted to and dipped into a trough of rinsing ?uid,
In connection with the various household and kitchen
and ?nally being dropped into a ?nal receptable to drain
dry ready for use.
chores, that of cleaning and polishing eating utensils,
Still another object of the invention is to provide a
such as knives, forks, spoons, and the like, is usually
novel and improved automatic eating utensil cleaning and 40 quite time consuming, and in many cases quite di?icult
for the average home or restaurant to take care of more
polishing device, in which there is a swinging boom, carry
ing on its outer end a prehensile means for grasping ar
than once a day without use of additional. labor or per
sonnel. The present invention is intended to perform
ticles of tableware or ?atware, the boom being swingable
to bring its grasping means over any operative portion 45 such cleaning and polishing operations automatically, in
a quick, simple and ef?cient manner, simulating to a
of the device, such as the initial soiled utensil receptacle,
great extent, the hand operation, but using mechanical
_ then the cleaning head, then the rinsing trough, and then
over the ?nal receptacle into which the utensils are
and electrical elements to do this, so that the housewife,
kitchen personnel, or others charged with this work, can
dropped to drain dry, all its swinging and extension and
prehension operations being carried out automatically 50 perform other chores in the meantime.
In order to understand clearly the nature of the inven
and in any predetermined sequence and timing arrange
tion, and the best means for carrying it out, reference
Still a further object of the invention is to provide a
may now be had to the drawings, in which like numerals
denote similar parts throughout the several views.
novel and improved automatic cleaning and polishing
As shown, there is a main base or platform generally
device for eating utensils, in which the prehensile means 55
indicated at ‘10, which may be formed of any suitable
material, such as plastic, wood, metal or the like, and
has an upraised rim 12 extending around its outer edge, so
or magnetic means for drawing them together to grip an
as to block spillage of liquids therefrom, or dislodgment
article of tableware to be cleaned or polished, or in which 60 of any of the articles carried thereon. The main base
carried by the boom may be formed as a mechanical
tongs with gripping jaws which may be resiliently biased
apart normally, and including mechanical or electrical
the prehensile means may be in the form of one or more
10 may have depending support legs 14 depending from
magnetic engaging heads which are electrically ener
its undersurface 16, to support it well above a table top,
gized when brought into proximity with tableware which
?oor or the like 18.
The main platform or floor member 10 has sup
is responsive to magnetic attraction, so as to attract and
hold the same while the various operations of the machine 65 ported thereon a ?rst container or hopper 20 which may
are being carried out, being then de-energized to release
conveniently have downwardly convergent side walls 22
the utensils when the cleaning operation is completed,
which rest upon the ?oor member 10 upper surface 26
in the manner shown best in FIGURE 1. Since this ?rst
and the prehensile means is holding the cleaned utensil
container 20 is intended to receive eating utensils such
over the ?nal receptacle into which it is dropped to drain
and dry.
70 as knives, forks, and spoons 28 which are to be cleaned
and/or polished, its ?oor 30 may be raised above the
Another object of the invention is to provide a novel
and improved automatic tableware cleaning and polish
lower edges of the side walls 22, ‘and either apertured or
formed of wire mesh, to allow any moisture or the like,
so as to be relatively fixed, while its plunger 124 is pinned
which is on the soiled spoons, knives and the like, to drip
or drain downwardly, apertures also being formed in the
side walls 22, as at 32 in FIGURE 1, to avoid trapping
such drained liquids. It will also be apparent that by
making the ‘apertures or openings in the mesh ?oor 30
to the outer extension 126 of the thumb arm assembly
114. When the solenoid is not energized, it is seen that
the gravity force acting on the rightward or thumb end
of arm r114, pulls it in a downward directly, dipping it
sufficiently large to receive the handles of the silverware
28 which is to be disposed therein, each such utensil will
slide partly through the apertured ?oor 30 and thus be
maintained in an upright position ready for being pulled 10
into the container 100 to pick up cleaning ?uid. When
the solenoid is energized, through Wires 128, the plunger
124 is pulled inside the coil 122, and the thumb arm
1116 is pulled upwardly as seen in FIGURE 1. Thus it is
readily seen that by alternately energizing and de-ener
or lifted out when its turn comes, and without crowding
gizing the solenoid in any cyclic sequence as needed, the
or bunching up of such utensils.
thumb head 116 will undergo corresponding upward and
A main support post 40 has its base 42 resting upon
downward oscillations and thus rub and clean the utensil
the ?oor or platform 10, or secured rigidly thereto, so as
28 held thereagainst by tong at 58a. A spring may be
to support at its upper end 44, the proximal end 46 of the 15 used also on arm 114, to enhance the oscillations, and it is
lifting boom arm 48, which is secured between the bifur
understood that I do not desire to be limited to the pre
cations 50 by means of a pivot pin or shaft 5'2. The boom
cise moving means shown, since other means may be
arm 48 is thus arranged for vertical angular traverse as
employed for this purpose.
indicated by the arrows 54 and 56 in FIGURE 1, and
After the utensil ‘23 is cleaned and polished by thumb
also for lateral angular traverse as indicated by the a head 136, the boom 48 is swung around in the direction
rows 58 and 60 in FIGURE 2, that is, about the axis of
of arrow 140 so that the tong 58 overlies the rinsing bowl
the post 40. Similarly the vertical traverse is about the
or container 142. The latter container contains a rinsing
axis of the pivot pin 52, which in turn is turnable as in
?uid, such as clear water or the like 144, and is disposed
A gripping tong member generally indicated at 58 is
carried on the outer or distal end 66 of the boom arm
48, being secured thereto in any suitable manner, de
pending upon the type and construction of gripping tong
substantially at the position shown in FIGURES l and 2,
on the arcuate path of travel of the tong 58. By means
of the controls contained in the control sequence housing
150 mounted on post 4th, the boom 48 is then lowered
slightly so as to dip the spoon 23 into the rinse water
employed. Thus the tong 58 may have a pair of main
and thus to rinse it oif. The boom 48 may be given oscil
levers 62 and 64, pivoted together at 66, and with their 30 latory motion up and down in any suitable manner, as by
outer ends biased toward each other by tension spring
means of a spring action, or otherwise, to facilitate the
68. A second pair of levers 70 and 72 are pivoted at 74
rinsing action, and then the boom arm 48 is uplifted
and 76 to the outer ends of the main levers 62. and 64,
again to elevate the spoon 28 out of the rinsing water.
respectively, being in turn pivoted at pin 78 to each
The spoon or utensil 28 being new cleaned and rinsed,
other intermediate their ends. The outer ends 80 and
the boom 48 is swung again around on its arcuate path in
82 of the second levers 7t} and 72, are bent inwardly as
the same direction of arrows 140, by means of the turn
seen best in FIGURE 1, to form gripping ?ngers for
ing means 15%, actuated through wires 15?. connected to
grasping or gripping the eating utensils 28 which are to
a source of electric power, as are wires 92 and $.28, so
be cleaned and polished. It is thus apparent that the
that the tong 53 now overlies the chute 16% which is
effect of the spring 68 is to maintain the gripping ?ngers
formed through the opening 162 in floor 19. A receptacle
80 and 32 in gripping positions, that is, continuously biased
164 is disposed below the chute 166, and may rest on
toward each other so as to hold a utensil 28 with which
the surface 18 as seen in FIGURE 1. By energizing the
they are brought into contact. An electromagnetic sole
tong solenoid 86, it is seen as explained above, that the
noid 86, as seen in FIGURE 1, has its coil housing 88
tong ?ngers 3t} and 82 are spread apart, allowing the
pinned to lever arm 62, and its plunger 90 pinned to lever
cleaned utensil as at 23a to drop into the receptacle £64
arm 64, so that as it is energized through the wires 92, the
with the other cleaned utensils. The boom 48 is then
solenoid plunger moves outwardly, and thus tends to
swung around to overlie initial container 2t}, and it picks
spread apart the levers 62 and 64, opening the clamping
up another utensil and goes through the same cycle.
arms or ?ngers 8t} and 82, and thus releasing any utensils
Where the utensils 28 are made of metal which can be
held thereby.
attracted magnetically, then the tong 53 may be replaced
There is also mounted on the floor surface 26, a con
by an electromagnet which picks up one utensil at a time
tainer 100 which contains a cleaning and polishing ?uid
as heretofore. The ?nal receptacle 164 may also be pro
or agent 102 suitable for the particular metal or alloy
vided with a wire mesh elevated inside ?oor or rack 168
of which the utensils 28 are formed, such as silver polish
to allow any excess ?uid to drain off the cleaned spoons
if they are silver or silver plated, and other suitable metal
28a. Similarly, an air feeding nozzle 17% may be dis
polish if or other metals or the like. A support post 104
posed as shown in FIGURE 1, to blow a blast of warm
has its base 196 mounted on the platform ?oor 10 secure
dry air across the top of container 164, to dry off the
ly, and has its upper end preferably bifurcated as at 108,
utensils further as they drop into it.
to receive the reduced portion 110 of the cleaning and
According to a modi?ed form of the invention, instead
polishing thumb member generally shown at 114.
of the use of the thumb 114, and container 1%, they may
The thumb member 114 has a thumb head 116 ex
be changed to a container 2% inside within which there
tending outwardly to the right as seen in FIGURES 1
is a spray nozzle 262 for spraying cleaning fluid right onto
and 2, and formed of soft sponge-like material, such as
the utensil 28 when it reaches the position with tong at
sponge, chamois leather, or it may also, according to
58a, so that the utensil is sprayed by one or more such
another form, be provided with bristles extending there
spray nozzles with ?uid, and then after it is thoroughly
cleaned and polished, rinsed off and dropped into the
shape, as seen in FIGURE 1, and its end portion is
bucket 164.
brought into position over the container 100, so that it
The entire assembly may be provided with a cover
may be dipped into the ?uid in the container periodically,
and then uplifted for rubbing and cleaning the utensils 28 70 member 190 which ?ts onto the rim 12, and is removable
when needed, although it may be left in position while
brought against its surface, by the tong 58 when in the
the cleaning is proceeding.
position shown at 5811 in FIGURE 1, being swung into
Although I have described by invention in speci?c
this position by turning of the post 44 and boom 48.
terms, it will be understood that various changes may be
An electromagnetic solenoid 120' has its coil housing
v>122 pinned or secured to the post 103 or the base 106, 75 made in size, shape, materials and arrangement without
from. The thumb head 116 is bent into a sort of hooked
departing from the spirit and scope of the invention as
When the modi?ed form of spray nozzle container 2%
is used, as seen in FIGURE 3, the cleaning and polishing
said boom means in sequential steps into each operative
position in a continuous cycle of operation from said ?rst
container to cleaning thumb, to rinsing bath, and to ?nal
6. The construction according to claim 1, characterized
further in that said boom means comprises automatically
actuated sequence controlled moving means for carrying
out the predetermined cyclic operation movement and re
turn to initial position at said ?rst container, and wherein
As seen in FIGURE 1, a suitable solenoid 47 may be 10 said thumb means comprises a thumb support, thumb lever
arm means pivoted in said thumb support, thumb head
supported on the boom arm 48 with its plunger carried
means carried by said thumb lever arm means for move
on the bracket 49, the bracket being in turn carried by the
ment therewith, said thumb head means being formed of
turnable bifurcations 5% so as to turn therewith. This
soft material which is yieldable to a?ord optimum clean
permits the elevation and lowering of the boom arm as
desired, and also, by interruption of the solenoid current, 15 ing engagement with an article to be cleaned, and solenoid
means for causing said thumb head means to be oscillated
permits shaking or stroking motion of the boom arm
in movement while moved for said cleaning purposes.
and the parts carried thereby. Such interruption
7. The construction according to claim 1, wherein said
carried out in any well known manner, and the shaking
cleaning thumb means comprises a spongy mass carried
may be aided by means of a spring engaging the parts
on a thumb lever.
involved. FIGURE 4 shows a simpli?ed circuit diagram
8. The construction according to claim 1,. wherein said
of the connections, including the motor 151 which is dis
cleaning thumb means comprises a thumb body formed
posed inside housing 150 and turns the boom arm about a
of soft yielding material, and covered with soft chamois
vertical axis as needed to its various positions. It is under
like covering material arranged in undulated surface array,
stood that various well known timing and control means
may be used for timing the actuation of the switches to. 25 to de?ne hollow areas intermediate said undulations for
maximum yielding contact while cleaning.
the various elements, at suitable periods in a cycle of
9. A cleaning and polishing device for articles of table
operation. Such timing and control elements are avail
?uid is fed from a pressurized source such as a pump by
duct 204, sprayed by several nozzles 2%2 from all sides
onto the utensil extended therein, the residue of ?uid leav
ing through drain 206 for recirculation by the pump if
able on the market ready for use to control any timing
I ware, comprising a main base, boom support post means
cycle desired.
I claim:
carried by said main base, boom arm means carried by
30 said boom support post means for movement over said
1. A cleaning and polishing device comprising a ?rst
container for receiving a plurality of discrete articles of
silverware and the like to be cleaned and polished, means
in said ?rst container for supporting said articles in a
main base, prehensile gripping grasping arm means car
ried by said boom arm means at its outer end and mov
able therewith to selected positions on said main base
and thereover, ?rst receptacle means on said main base for
regularly oriented array, traversable boom means mov 35 containing articles of tableware to be cleaned and pol
able relative to the elements in said device, prehensile
means carried by said boom means and releasably engage
able with selected discrete articles to lift the same out
ished, means in said ?rst receptacle means for orienting
said articles of tableware according to a desired pattern of
positioning, to facilitate being grasped by said prehensile
of said ?rst container while releasably holding the same,
grasping arm means, solenoid means for actuating said
cleaning thumb means arranged for wiping movement, 40 prehensile grasping arm means to open and close the same,
means for placing cleaning and polishing compound on
spring means for opposing said solenoid means, actuating
said cleaning thumb means, said boom means being con—
means for moving said boom arm means to a series of
structed and arranged for bringing said articles into wip
selected positions over said main base, a container for
ing proximity with said cleaning thumb means for being
cleaning ?uid, thumb means carried on said main base for
wiped clean and polished thereby, rinsing means disposed 45 dipping into said container of cleaning ?uid to carry said
near said cleaning thumb means for receiving said articles
after being wiped clean, for being rinsed thereby, and ?nal
cleaning ?uid on its surface, whereby as said boom arm
is swung to proximity to said thumb means the article
hopper means for receiving said cleaned and rinsed arti
carried thereby is brought into contact with said thumb
cles following said rinsing process.
means, oscillating means for oscillating said thumb means
2. The construction according to claim 1, character 50 to wipe said article clean and polish the same with said
ized further in that said ?rst container comprises an in
?uid, said boom arm being swingable to another position
ner partition ?oor containing apertures arranged for
on said base, rinsing container means at said. other position
orientation of articles of silverware placed therein, so as
and containing rinsing ?uid, said boom arm being movable
to make them ready for convenient grasping by said pre
to dip said article into said rinsing ?uid in oscillatory
55 fashion to rinse the same therein and to lift it out there
hensile means.
3. The construction according to claim 2, wherein said
from, ?nal receptacle means for receiving rinsed articles,
inner partition ?oor comprises wire mesh forming elongat
said boom arm being movable to position over said ?nal
ed apertures between adjacent wire sections to constrain
receptacle means, means for releasing the prehensile grip
the handles of silverware and the like into predetermined
of said boom arm thereon, so that said article is free to
orientation patterns.
60 drop into said ?nal receptacle means.
4. The construction according to claim 2, wherein said
inner partition ?oor comprises wire mesh forming elongat~
ed apertures between ‘adjacent wire sections to constrain
orientation of silverware into predetermined patterns, and
in which said ?oor is substantially elevated above the bot 65
tom of said container, with outlet openings in the walls
of said container below said floor for out?ow of excess
?uids therefrom.
5. The construction according to claim 1, characterized
further in that said boom means comprises automatically 70
actuated sequentially controlled moving means for moving
References Cited in the ?le of this patent
Rubush ____________ _._ July 21, 1914
Doujak _____________ __ Oct. 26, 1920
Friedman ___________ _._ Ian. 4, 1938
Repasy ______________ __ Dec. 19, 1939
Great Britain ________ _._ Sept. 1, 1921
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