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Патент USA US3071964

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Jan. 8, 1963
H. GRUNEWALD
3,071,954
WASHING APPARATUS
Filed May 1', ,1961
2 Sheets-Sheet 1
Jan. 8, 1963
H. GRUNEWALD
3,071,954
WASHING APPARATUS
“Filed May 1, 1961
‘
2 Sheets-Sheet 2
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3,071,954
United States Patent O,"
Patented Jan. 8, 1963
1
2
conveyor to the serially ?rst tub of the row.
3,071,954
WASHING APPARATUS
Heinz Grunewald, Bremen, Germany, assignor to E. F.
veying mechanism and correspondingly large actuating
forces are required to transfer the perforated and dripping
Textilien- & Apparate-Bau- & Vertriebsgesellschaft,
Eilers & Witt K.G., Bremen, Germany
Filed May 1, 1961, Ser. No. 106,821
7 Claims. (Cl. 68-27)
baskets from one tub to the serially next tub.
It is an object of the invention to provide a fully auto
matic laundry washing apparatus comprising a number of
stationary adjacent washing‘machines in which articles
to be washed which have been introduced into the ma
The invention relates to laundry washing apparatus us
ing a row of stationary adjacent washing machines. '
In this
older arrangement heavy and complicated lifting and con
10 chine at one end of the row are transferred, after treat
Various laundry washing apparatus involving the use
ment for a desired time, into the next machine of the row
of a row of stationary washing machines are known. For
instance, in one known arrangement a number of inter
which is simple in construction, reliable in operation, re
pipes, which comprise valves, for washing water, steam
laundrywashing machine which can be utilized for auto
matic multi-machine washing apparatus but which can
quires comparatively small ?oor space, and avoidsthe
aforementioned drawbacks of the prior art apparatus.
communicating Washing machines are disposed in a ring,
and each such machine is connected to various supply 15 -It is a further object of the invention to provide a novel
and additives such as acidifying, steeping and bleaching
agents and detergents. In this known apparatus, which has
been found satisfactory in practice, each machine is con
also serve as an individual domestic washing machine. '
In the apparatus according to the invention the ma
nected, by operation of the valves, to one or more of the 20 chines are stopped at the end of the required treatment
time in a position in which paddling means moving the
“supply pipes in a predetermined sequence at the com
articles to be washed through the washing liquid are in
pletion of a washing operation; the machine in which
substantially horizontal position, whereafter means for
the articles being washed are given the ?nal treatment is
transferring the articles being washed are introduced into
disconnected from the feed pipes and from the com
mon ?ow pipe, emptied, reloaded and then reconnected to 25 a space within the path of movement of the paddling
means but not occupied by said means in said stopped
one end of the common ?ow pipe. The advantage of
position thereof, whereafter the paddling means is so
this prior art apparatus is that the washing additives are
turned through a fraction of a revolution that the ar:
used very efficiently, so that very economical washing is
ticles to be transferred are placed on the transferring
‘achieved. A disadvantage, however, is that the unloading
‘and reloading station changes after each individual wash 30 means, whereafter the articles are transferred by ‘such
means into the next machine or, if transferred from the
ing operation, with the result that the common ?ow pipe
last machine of the row, to another device and, if required,
has to be connected in a different way on both sides of
further articles to be washed are simultaneously intro;
the machine to be reloaded and many of the valves in the
duced into the ?rst machine of the row, whereafter the
feed pipes to the other machines must be changed over.
‘
To save the staff attending a number of stationary 35 machines restart their normal washing motion.
Preferably, to ensure e?icient use of the washing addij
laundry washing machines from having to perform any
tives the washing liquid passes, throughout the entire wash
changeover jobs and, Where conveyor belts or other de
ing operation, in an uninterrupted stream through all
vices are used at the loading and unloading stations, from
the washing machines in countercurrent to the article
having to do any loading or unloading jobs, it has already
'
been proposed that, in a washing plant of the kind 40 being washed.
For a better understanding of the invention and to
speci?ed, the articles to be washed which have been
show how the same may be carried into effect, reference
introduced into the drum of a machine at one end of the
will now be made to the accompanying drawings wherein;
row be transferred, after treatment for a desired time,
FIGURE 1 is a partly sectioned side elevation showing
into the drum of the next machine of the row, the ?nish
washed articles being ejected from the last machine. To 45 a number of adjacent washing machines, including the
transfer the articles from one machine to the next in this
other prior art arrangement, the drums'of all the machines
are stopped after the desired treatment time. The drums
are then rotated backwards through part of a revolution
?rst and last machines of the plant;
so that some of the articles in the drum slide into the 50
step;
next machine through transfer ducts which are provided
between adjacent machines and which extend inclinedly
Iv
'
FIGURES 2-4 are side elevations of one washing ma
chine showing the positions of the drum and of the article’
transferring means during various phases of the transfer
.
-
-
downwards. The main disadvantages of this latter prior
trates the means for conveying the washing liquid and -.
art arrangement are that the cross-sections of the trans
fer ducts are fairly‘ small and that the drums are of a 55
FIGURE 5.
complicated and expensive design. Furthermore a part of
,
FIGURE 5 is a partly sectioned diagrammatic side
elevation which is similar to FIGURE 1 and which illus
FIGURE 6 is a plan view of the arrangement shown in,
'
The apparatus comprises a number of washing machines
which are disposed adjacent one another in a row; the
number of machines can be varied to suit the quantity of
articles to be washed, the soiling thereof and any other
tion.‘
'
factors. For the sake of clarity only some of the ma
In a further known multi-machine laundry washing ap
paratus there are provided a number of stationary wash 60 chines are shown in FIGS. 1, 5 and 6--i.e., the ?rst ma
chine 10 of the row which is loaded with the dirty wash
ing machines, each comprising a tub and a perforated
ing; the last machine 11 of the row from which the
basket pivotally journalled within said tub for reciprocal
?nish-washed and rinsed articles are removed; and three
movement, drive mechanism being provided for actuating
machines 12-14 whichare provided between the machine
all baskets simultaneously and all tubs being intercon
the interior of the drum is occupied by transfer means i
and is thus not available for aiding in the washing opera,
nected by ?uid lines through which washing ?uid moves 65
in countercurrent to the direction of movement of the
articles washed. "At each successive step of the‘washing
operation all .the baskets, are bodily lifted out of their
10 and the machine 11.
.
_
In the embodiment illustrated in the drawings, all the
washing machines are identical with one another ‘and: con
sist of a stationary outer vessel 15 comprising a part-cylin
‘drical base wall 16 and side walls 17. Rotatable means
journals by means of a lifting bar mechanism and then 70 18 for moving the laundry and subjecting it to agitation
lowered into the serially adjacent tubs,,the basket removed
in the washing liquid are disposed in the outer vessels v15‘.
from the serially last tub beingireturnedby, an overhead
These rotatable means hereinafter referred to as paddling
3,071,954
3
4
means, comprise two arcuate side walls 19, which are
concentric of the wall 16, and two strip-like end walls
20 which are of arcuate shape on the narrow sides.
on a table (not shown) or conveyor belt by the box 27
which is furthest to the left in FIG. 1.
Two
The arrangement for conveying washing liquid through
diametrically opposite edges of the side walls 19 are in
terconnected by a perforated partition 21 comprising a
the washing machines is illustrated in FIGS. 5 and 6.
central hub ‘part secured to the shaft 22.
The washing machines illustrated therefore comprise
In the washing plant according to the invention, washing
liquid moves in countercurrent to the articles from the
?nal machine 11 of the series to the ?rst machine 10 of
two chambers in which a speci?ed quantity of articles,
the series by way of all the washing machines between
which are preferably placed in a bag, are treated. As
the machine 11 and the machine 10. vWashing water‘
the paddling means rotates in the direction indicated by 10 for ?nal rinsing, and an acidulating agent, are supplied to
an arrow 23, the articles are moved through the washing
the ?nal machine 11 through pipes 31, 32. Other addi-v
liquid in the vessel; the articles are lifted by one of the
tives, such as detergents, \bleaches and steeping agents
two partition portions on the right-hand side of the vessel
and heating steam, are added in other machines through
as seen in the drawings, to slide down as the partition ap
pipes 33 diagrammatically shown in FIG. 5. Over?ow
proaches the vertical position. As can be seen in the
boxes 34. which are basically similar to one another are
drawings, the side walls 19 have scooping pockets at their
provided between adjacent machines and comprise; an in
free ends.
let pipe 36 through which washing liquid enters from the
To ensure that articles being washed do not slip be
previous machine; a central adjustable over?ow 37; and
tween the pushing edges of the walls 19, 20 and the vessel
an outlet pipe 38 which extends to the immediately fol-‘
walls 16, 17 while the articles are rolling around in the
lowing machine. Preferably, all the boxes 34 comprise
manner just described, the wall edges are specially de
draining pipes 39 which are ?tted with valves and which,
signed; for instance, they can comprise ?exible strips 24
if required, can be connected to pipes 40 extending to the
which bear against the vessel walls.
sewerage system. In one particular over?ow box, 35,
All the paddling means can be driven by a common
which is placed downstream of the washing machine com
driving motor 24 with which the various washing machines 25 prising the detergent feed pipe, means are provided which
are in driving engagement by way of a common shaft 25
are operated by the level of the foam in the box 35
and of bevel gearing 26 disposed thereon. However, other
and which serves to control the supply of detergent. Such
drive arrangements are possible; for instance the various
means comprise: a light source 41 on one side of the box;
machines can be directly interconnected by spur gears
and a photoelectric cell 42 which is disposed on the oppo
which are disposed on the shafts and on spindles parallel
site side of the box and which is irradiated by the light
therewith and which are driven by an appropriately ar
source. If the evolution of foam increases in the box
ranged motor. Also, the shaft 25 can be driven by a
35 to such an extent as to interrupt the light beam im
number of motors by way of belts.
pinging
upon the cell 42, the same initiates a constricting
As compared with the prior art washing machine ar
movement
of the valve which controls the supply of de
rangements in which the articles being washed are trans 35
tergent. Tubes 36, 38 for washing liquid in?ow and out~
ferred from one machine to the next by inclined transfer
?ow are preferably connected to opposite sides of each
surfaces provided at the transfer stations between adjacent
machine so that the over?ow boxes between the machines
vessels, pivoting transfer elements are provided in the ar
are disposed alternately on opposite sides of the ma‘
rangement according to the invention. In the embodiment
illustrated the transfer elements take the form of box-like 40 chines forming the series, so that washing liquid entering
a washing machine cannot pass directly to the outlet
receptacles or scoops 27 which are open at the top and
thereof. For the sake of simplicity in the drawings the
which can be pivoted around spindles 28 extending parallel
places where the pipes 36, 38 are connected to the 'ma-‘
with the shafts 22. The spindles 28 are disposed near that
side of the vessel which is forwardmost as seen in the di
rection of article movement. The vessels are intercon
nected by linkage 29 moved by drive means (not shown)
in the direction indicated by the double arrow 30.
The operation of the transfer device will now be de
scribed with reference to FIGS. 2-4. While the articles
are being washed, the transfer boxes 27 are in the raised
chine are shown as being at the same height but they
can be at different heights from one another.
The multi-machine washing apparatus described opera
ates as follows:
The operator or, and preferably, an automatic con
veyor, the movement of which is co-ordinated with the
stepwise advance of the articles being washed, loads such
vertical position which can be seen in FIG. 1 and in which 50 articles into the ?rst machine 10 of the series either by
way of a box 27 or directly into the top of the machine
they do not impede washing. At the termination of each
18. The articles pass through the remaining machines
washing operation all the paddling means stop simul
of the series and are given a dilferent treatment in each
taneously in the position which can be seen in FIG. 2
machine in the manner conventional in countercurrent
and in which the articles are in the top chamber in the
lower end thereof; in FIG. .2 such lower end is on the 55 washing plant. The article, after ?nal rinsing in the ?nal
machine 11 of the series, is transferred to another con
right-hand side. The boxes 27 are then lowered into the
veyor (not shown) or can be introduced directly by the
horizontal position shown in FIG. 2, whereafter the pad
transferring device into a. spin dryer.
dling means are rotated through part of one revolution
Of course, the novel apparatus can be operated fully
into the position which can be seen in FIG. 3 and in
which the articles in the top chamber of the paddling 60 automatically without any staff.
The apparatus described with reference to the draw
means slide into the box 27. The paddling means are
ings is just one embodiment of the invention and can
then returned to the position shown in FIG. 4 and the
be varied in many ways. For instance, the washing ma
boxes 27 are pivoted back into their normal raised posi
chines, instead of being placed in a single row, can be
tion, the articles dropping from the box into the top empty
placed in a number of rows, the articles moving in oppo
chamber of the paddling means of the adjacent machine.
site directions, while the transferring device between the
Referring to FIG. 4, the box 27 can be seen in an inter
last machine of the ?rst row and the ?rst machine of the
mediate position on the left and in the end position on
second row is so designed that the articles being washed
the right. Of course, further articles can be introduced
are moved laterally after they have been lifted out of the
into the ?rst machine of the series at every transfer opera
tion. The new articles can be introduced by the box 27 70 ?nal machine of the ?rst row.
which is furthest to the right in FIG. 1. Alternatively,
Instead of weir-like over?ow devices, simple connect
the new articles can be placed directly in the top chamber
ing pipes can be used with or without the through-?ow
of the paddling means of the ?rst machine of the series.
and with or without the valve arrangements for con
The ?nish-washed articles removed from the ?nal ma
trolling the level of the washing liquid. Such connecting
chine of the series at each transfer operation are deposited 75 pipes can comprise recessed parts which act as dirt inter
3,071,954
5
.
ceptors and which, just like the over?ow boxes illustrated,
comprise draining pipes 39 for the removal, when neces
sary, of accumulated dirt.
The apparatus according to the invention is also of use
for washing machines, the paddling or agitating means of
which are reciprocated.
The term “drum washing machine” herein used applies
to any washing machine in which an agitating means is
,
6
receiving position and can, after being loaded with the
articles to be transferred by movement of said paddling
means be lifted out of said machine to such an extent
that articles can be transferred to the other one of said
machines.
5. An apparatus according to claim 4 characterized in
that said transfer means comprises scoops swingably
mounted about an axis parallel to the axis of said paddling
members.
mounted for rotation or reciprocation in an outer vessel
6. A laundry washing apparatus with a plurality of
said agitating means being so arranged within said outer 10
stationary adjacent washing machines in which articles to
vessel that it is directly engaging and positively moving
be laundered are introduced into a machine at one end
the articles during the washing process.
of the row and are then transferred after treatment for
The term “article” herein used applies both to indi
I claim:
a desired time period into the next machine of the row,
each washing machine comprising a stationary outer
1. A laundry washing apparatus including a plurality
vessel adapted to contain a washing liquid, 9. pivotally 1
vidual pieces of laundry and to batch laundry.
mounted laundry moving member in each of said vessels,
the laundry moving members of all machines being op
erable in unison to subject the laundry articles to agitation
introduced to one of the machines at one end of the row
and are transferred at predetermined periods from one 20 in the washing liquid, each of said laundry moving mem
of stationary washing machines arranged in a row ad~
jacent one another in which articles to be laundered are
machine to another in succession after treatment for a
predetermined time, each washing machine comprising a
staionary outer vessel for receiving the washing liquid,
bers being in the form of a paddling means extending sub
stantially radially from its pivot axis toward a partial cy
lindrical wall provided in the lower part of said outer
vessel and disposed concentrically to said axis, said pad
pivotally mounted laundry moving means within said
vessel, the laundry moving means of all of the machines 25 dling means being operable to stop in predetermined posi
tions during transfer periods, movably mounted laundry
being actuated in unison for subjecting the articles to
transfer means disposed near contiguous parts of two
agitation in the washing liquid in said vessels, each of
said laundry moving means comprising a paddling mem
ber extending substantially radially from its pivot axis and
adjacent machines to lift articles out of the machines and
to transfer them to serially adjacent machines when said
actuated so as to be arrested in a predetermined posi 30 paddling means are at rest and permit them to be lowered
into the path of movement of the paddling means of one
of said two adjacent machines to an article receiving posi
‘tion and can, after being loaded with the to be trans
fer-red articles by movement of said paddling means he
ated in unison during the transfer period to lift articles
lifted out of said machine to such an extent that articles
being laundered out of the machine and to transfer them
can be transferred to the other one of said machines, the
to serially adjacent machines, said transfer means being lo
vessels of all machines being connected by conduits with
cated to be lowered into the path of the paddling means
the machine at one end of the row in which the articles
of one of said two adjacent machines to an article re
to be washed are introduced being provided with a drain
ceiving position and after being loaded can be shifted to
40 so that the washing liquid can pass in an uninterrupted
transfer the articles to a subsequent machine.
stream through all the washing machines in a direction
2. Apparatus according to claim 1 characterized in
counter to the direction in which the articles are trans
that said transfer means comprises scoops swingingly
ferred throughout said row.
mounted about the axis parallel to the axis of said pad
7. A laundry washing apparatus including a plurality
dling means.
tion during the transfer period, and movably mounted
transfer means adjacent the upper portions of said vessels
and located between adjacent machines which are actu—
3. Apparatus according to claim 1 characterized in that 45 of stationary washing machines arranged adjacent one
said paddling means are provided with apertures to per
mit the ?ow of washing liquid from one side of said
to another and in a line to form a row in which articles
means to the other.
machines at one end of the row and are transferred se
4. A laundry washing apparatus including a plurality
of stationary washing machines in which articles to be
quentially at predetermined intervals int-0 the next ma
chine of the row after being treated for a predetermined
time, each washing machine comprising a stationary outer
vessel adapted to contain washing liquid, a pivotally
mounted laundry moving means within each of said ves~
sels, the laundry moving means of all of the machines
laundered are introduced into one of the machines at a
time and at one end of a row of said machines and trans
ferred at predetermined periods after being treated for
of clothing and the like are introduced into one of the
a predetermined time and then discharged into an adja
cent machine of the row, each washing machine in said 55 being actuated in unison for subjecting the laundry arti
cles to agitation in the washing liquid, each of said laundry
row comprising a ‘stationary outer vessel to contain a
washing liquid, a pivotally mounted laundry moving
moving means including a paddle member extending sub
means within each of said outer vessels, the laundry mov~
ing means in each of said machines comprising a paddling
~ stantially radially from its pivot axis toward a cylindrical
wall portion provided in the lower part of said outer ves
member, all of said paddling members being operable in 60 sel and disposed concentrically to said axis, said paddle
member comprising two arcuate side walls which are con
unison to subject the articles being laundered to agitation
centric with the cylindrical portion of the vessel, two
in the washing liquid, said paddling members extending
substantially radially from their pivot axes toward a par
tial cylindrical wall provided in the lower part of their
strip-like end walls which are of arcuate shape on the
narrow side and two radial walls extending from diametri
cally opposite points of said arcuate side walls to the
axis of said paddle member, said paddle member being
operable to stop in a predetermined position during laun
dry transfer periods, a movably mounted laundry trans
od, and movably mounted transfer means actuatable in
fer member disposed between each two adjacent machines
unison during the transfer periods to lift articles out of
the machine and to transfer them to serially adjacent ma 70 operable in unison during the transfer periods to lift arti
cles out of the machine and to transfer them to serially
chines, each of said transfer means being disposed near
adjacent machines, said transfer members being adapted
contiguous parts of two adjacent machines in such a
to be lowered into the path of movement of the paddle
manner that it can, when said paddling means are at rest
member of one of said two adjacent machines to an arti
be lowered into the path of movement of the paddling
means of one of said two adjacent machines to an article 75 cle receiving position and can, after being loaded with the
respective outer vessel and being disposed concentrically
to said axis, said paddling members being operable to
stop in predetermined positions during the transfer peri
3,071,954
7
to be transferred articles by movement of said paddle
members be lifted out of said machine and transferred
to the other one of said machines, the outer vessels of all
machines being connected by conduits for supplying the
same with washing liquid ?owing in a direction counter to 5
the direction of article transfer, the vessel of the last ma
chine being provided with a drain.
References Cited in the ?le of this patent
UNITED STATES PATENTS
399,425
Miller ______________ __ Mar. 12, 1889
2,402,278
Ganeles ____________ __ June 18, 1946
2,745,712
Burling ______________ __ May 15, 1956
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