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Патент USA US3093852

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June 18, 1963
B. A. Buss
3,093,842
LAUNDRY METHOD
Filed Nov. 8, 1957
INVENTOR
BEND-H MéYN ALVIN Buss
Ema/M1, W, m q’ KW
ATTORNEYS
United States Patent 0”ice
3,093,842
Patented June 18‘, 1963
2
snaasaz
.
LAUNDRY METHOD
Benyamin Alvin Buss, East Moline, Ill., assignor to
Ametek, Inc., a corporation of Delaware
Filed Nov. 8, 1957, Ser. No. 695,260
2 Claims. (Cl. 8—159)
This invention relates to a method for washing mate
the receiver is supported only at one end. The machine
includes a housing or shell 10 having an opening 11 which
is adapted to be closed by a door 12. Rotatably mounted
within bearing 13 is a shaft 14. A pulley 15 is attached
to the portion 14 extending beyond the housing. Rota
tion of pulley 15 by belt 16 results in the rotation of
shaft '14.
Mounted on the shaft for rotation therewith is a re
ceiver or drum 17 which is wholly within housing 10 and
washing, and particularly to a method for evenly distribut 10 spaced from the walls thereof. The front wall 18 of the
receiver is sloped outwardly toward the rear so as to urge
ing the materials in the rotatable receiver before the re
the materials against side wall 19 of the receiver when
ceiver is rotated at extracting speed.
the receiver is rotated at high speeds. The receiver has
The invention is particularly adapted for use with a
a circular opening 20 in its front wall which is aligned
tumbler type laundry machine in which the ?uid is ex
rials and centrifugally extracting ?uid therefrom after
tracted from the materials being washed by rotating the 15 with circular opening 11 in the housing, thereby permit
ting the loading and unloading of the materials to be
receiver at a high extracting speed, the receiver having
washed. The rear wall 21 of the receiver is preferably
heavier than the other walls thereof, so that the major
portion of the force exerted when the receiver is rotated
relatively low speed to wash the materials and is then
rotated at a high centrifuging speed to extract substan 20 at extracting speed is exerted at the point where shaft 14
is connected to rear wall 21. Conventional punched
tially all of the ?uids from the materials. In order to
holes, as at 22, are provided in side wall 19 in order to
avoid destructive vibration of the machine it is necessary
permit the washing fluid forced from the load to escape
to have the materials evenly distributed about the periph
from the receiver in the usual manner.
ery of the receiver prior to the rotation of the receiver
25
Dump means, generally shown at 23, permit the bulk
at said high centrifuging speed.
of the washing ?uid .to be removed from the housing 10‘.
One of the objects of this invention is to provide a
The dump valve illustrated in FIG. 1, which is the type
method for washing materials and extracting substantially
of valve preferred, may be a valve of the type disclosed
all of the ?uid therefrom, in which the materials are
in Patent No. 2,443,816. This type of valve utilizes a
evenly distributed about the periphery of the receiver
diaphragm 24 which holds dump opening 25 closed under
prior to ‘the receiver being rotated at a high extracting
the pressure ‘of ?uid in pipe 26 which is connected to inlet
speed.
28 by line 29. When the receiver is rotated at a predeter
A further object of this invention is to provide a
mined speed, a solenoid switch (not shown) can be actu
method in which the washing ?uid is dumped from the
ated to open valve 27 and drain liquid in pipe 26 so as
receiver while the receiver is rotated at the relatively low
to reduce the pressure below diaphragm 24. The clean
washing speed, then increasing the speed of rotation of
ing ?uid in housing 10 then forces diaphragm 24 away
the receiver to a predetermined level at which the mate
from opening 25 permitting the cleaning ?uid to ?ow
rials cling to the periphery of the receiver but may move
rapidly out of housing 10.
slightly away from the receiver, and then introducing ?uid
In the above described machine, the materials to be
into the receiver while the receiver is rotating at this pre
perforations therein and being rotatable in a drum. In
such a machine the rotatable receiver is rotated at a
determined speed.
40 washed are loaded in the receiver and the water or other
washing ?uid is introduced into the housing. The receiver
The method of the invention includes the steps of load
is then rotated at a relatively low speed while the various
ing the materials to be washed in the receiver and then
washing and rinsing operations are performed. After the
rotating the receiver at a relatively low washing speed to
completion of these operations, the washing ?uid is re
wash the materials. After the materials have been washed
moved from the housing through dump means 23. The
the washing ?uid is dumped from the receiver through a
speed of rotation of the receiver is then increased to a
dump valve and the rotational speed of the receiver is
higher predetermined speed. This predetermined speed
increased to a predetermined level. This level is a speed
is a speed at which the materials are urged against Wall
slightly more than the speed at which the materials cling
to the periphery of the receiver. However, at the pre 50 19 of the receiver by the centrifugal force generated by
the rotation of the receiver. However, the speed is su?i
determined level the materials may move slightly away
ciently low so that, when the materials which are urged
from the periphery of the receiver. While the receiver
against the receiver pass through ?uid in the receiver,
is rotated at this predetermined speed, the dump valve is
they can move slightly away from wall 19 so as to re
closed and ?uid is introduced into the receiver so that
the materials will redistribute themselves evenly about 55 distribute themselves. In order to accomplish this re
distribution, water or any other suitable ?uid is intro
the periphery of the receiver. After a short interval of
duced into the housing while the receiver is rotated at the
rotation at this predetermined speed with ?uid in the re
predetermined speed. After the water has reached the
ceiver, the rotational speed of the receiver is gradually
desired level, approximately ?ve or six inches, the receiver
increased and the ?uid in the receiver is dumped there
continues to rotate at the predetermined speed for a mod
from. The speed is then increased to an extracting speed
erate length of time, from about ten to thirty seconds,
which is substantially higher than the predetermined speed
sufficient to permit the materials or clothes to redistribute
and which results in the extraction of substantially all of
themselves in a uniform manner. After the termination
the ?uid from the materials washed.
of this length of time, the speed of rotation of the receiver
The foregoing and other objects, features and advan
tages hereof will become apparent from the following 65 starts to increase beyond the predetermined speed and the
dump valve 23 is opened to drain the water. The speed
description and drawing which are merely exemplary.
of rotation of the receiver may now be increased to a rela
The drawing is a side elevational view in cross section
tively high speed which is su?icient to extract substantially
of a laundry machine in which ‘the method of the inven
all of the ?uid from the materials.
tion may be practiced.
By utilizing the method of this invention, the materials
As can be seen in the drawing, the invention is illus 70
in the receiver will be evenly distributed against wall 19
trated in conjunction with a laundry machine of the type
prior to the increase of rotational speed of the receiver
having a receiver rotatable on a horizontal axis in which
3,093,842
3
4
to thehigli extracting speed. This eliminates much of
2. In a method of washing textile materials and ex
the destructive vibration present when former methods
tracting liquid therefrom in a washer extractor including
were utilized.
It is to be understood that the principles of the inven
tion are not intended to be limited to use with the above
described apparatus, nor to the above described steps,
except as de?ned in the appended claims.
What is claimed is:
v
l. A method of washing textile materials and of then
extracting liquid therefrom in a washer extractor includ;
ing a housing and a receiver rotatable in said housing
on- a‘ substantially horizontal axis, comprising the steps
of loading the materials in the receiver, introducing Wash
ing liquid into the housing, rotating the receiver at wash~
a housing, a receiver rotatable in said housing on a sub
stantially horizontal axis and a dump valve for removing
liquid from said receiver, the steps of ‘opening the dump
valve to dump the Washing liquid from the receiver While
the receiver is rotating at washing speed, increasing the
rotational speed of the receiver to a predetermined level,
said level being slightly higher than the speed at which
10 the materials will cling to the periphery of the receiver
so that the materials will not drop completely from said
periphery, closing the dump valve after the receiver has
reached this predetermined speed, introducing liquid into
the housing until a level of approximately ?ve to six
ing speed through the washing liquid in the housing, 15 inches is reached therein While the receiver is rotated
dumping the Washing liquid from the housing, then in
at said predetermined speed for a period of approximately
creasing the speed of rotation of the receiver to a pre
determined speed Which is higher than the Washing speed
and at which the materials are urged toward the wall of
the receiver by centrifugal force Without preventing slight
ten to thirty seconds, so that the materials re-arrange
themselves evenly in the receiver, said level being such
that the rotating receiver moves through the mass of
liquid.
'
movement of the materials away from said Wall, intro~
du’cing liquid into the housing while the receiver is being
rotated at said predetermined speed, maintaining the
speed of rotation of said receiver at said predetermined
speed after the level of liquid in the housing is such that 25
References Cited in the ?le of this patent
UNITED STATES PATENTS
the receiver moves through the mass of liquid, so that
1,847,159
Adams _______ _; ______ __ Mar. 1, 1932
the materials redistribute themselves evenly on said wall,
dumping the liquid from the receiver after the materials’
speed of rotation of the receiver to a speed substantially
2,165,884
2,309,940
2,637,186
2,706,899
Chamberlin et a1 _______ __ July 11,
Douglas ________________ _, Feb. 2,
Douglas _______________ __ May 5,
Meyer _______________ __ Apr. 26,
higher than said predetermined speed tov extract the liquid
from said materials.
2,757,531
Fox ______ _, __________ __ Aug. 7, 1956
2,760,639
Haverstock ___________ __ Aug. 28, 1956
have been evenly distributed, and then increasing the
1939
1943
1953
1955
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