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Патент USA US3022670

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Feb. 27, 1962
A. H. GERHARDT ETAL
3,022,655
FILTERING AGITATOR
Original Filed July 9, 1958
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Patented Feb. 27, 1962
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wardly and outwardly daring base portion 21. Disposed
3,622,655
FILTERÄNG AGITATOR
Andrew H. Gerhardt, Birmingham, Mich., and Charles
R. Waldrop, Herrin, lll., assignors to Borg-Warner Cor
poration, Chicago, lll., a corporation of Illinois
Continuation of application Ser. No. 747,373, July 9,
1958.
application Nov. 7, 196i), Ser. No. 67,858
5 Claims. (Cl. 6S--18)
The present invention relates to clothes washing ma
chines and more partciularly lto means for recirculating
and filtering the Water of a clothes washing machine.
Automatic clothes washing machines with which the
»on-
about the outer surface and extending outwardly from the
flaring base portion 21 are a plurality of vanes 22 for
causing water turbulence within the basket 12 when the
agitator is oscillated.
A conical shaped, imperforato
plate 24, having a plurality of spiral or helical vanes 23
disposed about the inner surface and extending outwardly
to substantially the periphery of the iiaring base 21, is
suitably secured to the base of the agitator by means of
a plurality of screws 25.
The vanes 23 nest against the
bottom surface or" the agitator 13 thereby defining a plu
rality of helical shaped spaces 26 in the base of the agi
tator. A plurality of openings 27 in the agitator 13 provide
fluid communicaiton with the Water passageway 19 and
present invention is associated comprise a cylindrical tub
containing a cylindrical cup-shaped basket having an oscil 15 the spaces 26. A plurality of openings 2S are provided
in the top of the flaring base 21 and are placed in the
latable agitator therein. The agitator is oscillated during
base so that they open into the spaces 26 at a point sub
the wash cycle of the machine and the basket is rotated
stantially forward of the end of the longest vane 23
at high speeds to extract the water from the clothes.
thereby providing a pocket or cavity 26a in the agitator
Clothes are inserted into the basket and the basket is
ñlled to the desired water level, after which the agitator 20 base.
An annular filter, designated generally by the reference
is vigorously oscillated to provide the washing action. As
numeral 29, is disposed on the agitator 13.
the washing operation proceeds, lint and scum accumulate
At the beginning of a washing operation, water is ad
in the wash water and unies removed therefrom, will ad
mitted to the basket 12 through the water supplying
here to the clothes during the extraction cycle. Various
systems have been employed for removing the lint and 25 means 14 to iill the basket to the water level A shown in
FIGURE l, and the agitator 13 is oscillated by appro
scum from the wash water, including overflowing the
priate driving means.
basket to Wash the lint and scum down the drain. Other
The oscillation of the agitator in one direction ñlls the
systems employ various methods of recirculation and
cavities 26a and oscillation in the other direction pumps
filtering of the water in the basket of the machine. Most
the water upward through the helical-shaped spaces 26
of these methods overflow Water from the basket into the
and the water passes through the pasageway 19, through
tub and pump the overflowed water back into the basket
the openings 27 and onto the filter 29. The water within
through some sort of lilter. There are several disad
the basket is thus continuously recirculated by means of
vantages to such a recirculating system, however, in that
some o-f the scum and filth that is present in the tub from
the pumping action of the oscillated agitator.
the previous washing operation is circulated into the
basket of fresh wash water when the washing cycle begins.
Since any scum or lint in the Water is of relatively light
Weight, it will be recirculated with the water as it ñows
Another undesirable feature of such a system is the cost
through the agitator 13, and the lilter member 29 arrests
requirement.
and removes the scum and lint from the circulating Water.
This is a continuing application of an earlier tiled United '
It is an object of the present invention to provide a filter
system for a clothes washing machine which does not 40 States patent application Serial No. 747,373, tiled July
9, 1958, entitled Filtering Agitator which application has
have the aforementioned undesirable characteristics of
been permitted to lapse without prejudice in view of its
the prior recirculating systems.
being superseded by this application.
The present system involves the use of the oscillating
While we have described our invention in connection
agitator to provide a recirculation of the duid within the
basket and a filter disposed on or about the top of the 45 with a certain specific embodiment thereof, it is to be
understood that this is by way of illustration and not by
agitator in the path of the recirculated water to remove
the lint and scum from the water.
way of limitation and the scope of our invention is deiined
The invention consists of the novel constructions, ar
rangements and devices to be hereinafter described and
claimed for carrying out the above stated objects and
such other objects as will appear from the following
description of the preferred embodiment of the invention
illustrated with reference to the accompanying drawings
wherein:
FIG. l is a cross-sectional view of a washing machine
having a new and improved agitator with a filter thereon;
FlG. 2 is a cross-sectional view of the agitator; and
FIG. 3 is a top view of the agitator partially broken
away to show structural details of the agitator.
Referring to FIG. 1, there is disclosed a washing ma
chine of the type disclosed in Gerhardt et al. Patent No.
solely by the appended claims.
We claim:
1. In a clothes washing machine, a clothes receiving
basket adapted to be ñlled with clothes and water to a
predetermined level, an agitator disposed within said
basket, means for oscillating said agitator, a filter dis
posed adjacent the top of said agitator and above said
predetermined level, means detining a water passage
through said agitator and communicating with said filter
and including a plurality of spaced spiral vanes within
said agitator for pumping the water upwardly through
said agitator.
2. In a clothes washing machine, a clothes receiving
basket adapted to be filled with clothes and water to a
2,807,951, October 1, 1957, and comprising a casing 10,
an imperforate tub 11, and a vertically disposed imper
predetermined level, an agitator disposed within said
basket, means for oscillating said agitator, said agitator
forate Wash basket 12. The basket 12 has disposed there
in an agitator 13 which is oscillated by a conventional
driving means. Water is supplied to the basket 12 by
comprising a post portion for receiving a drive member
and wall means radially spaced therefrom and deiining
the water supply means 14 and access is provided to the
basket 12 by means of a hinged door 15.
a radial Water passageway, said wall means terminating
in a Haring base, a lilter disposed on the top of the agitator '
above said level and in communication with said radiá
The agitator 13 comprises an opstanding hollow post
Water passageway, means providing a plurality of spiral
portion 16 for receiving the usual oscillated drive shaft 70 water passageways in said daring base and in communica
17, a radially spaced Wall 18 deñning a water passageway
19 between the said Wall and the post 16, and a down
tion with said radial water passageway, means providing
communication of said water in said basket with said
spaanse
Y spiral passageways whereby when the agitator is oscillated,
waterin the basket will enter said last named means and
belifted upwardly by said spiral passageways through
said radial passageways and will discharge onto said filter,
3. In a clothes washing machine, a clothes receiving
basket adapted to be iilled with clothes and water to a
predetermined level, an agitator disposed within said
basket, means for oscillating said agitator, said agitator
Ycomprising a post portion for receiving a drive member
and wall means radially spaced therefrom and defining
a Vradiali water passageway, Vsaid wall means terminating
in ñaring base, a filter disposed on the top of the 'agitator
Yabove said level and in' communication with said radi-ai
water passage-Way, a plurality of spaced spiral vanes pro
viding a plurality of spiral Water passageways in said ñar
'ting base and'in communication with said radial water
A
posed adjacent the top of said agitator and above said
predetermined level, means deiining a water passage from
below said predetermined level in communication with
said filter, and a plurality of spaced spiral vanes within
said passage connected to said agitator for pumping water
upwardly through said passage from below said predeter
mined level to said filter. Y
5. In a clothes washing machine, a clothes receiving
’basket adapted to be ñlled with clothesV and water to a
predetermined level, an agitator within said basket and
adapted to oscillate about a generally verticalraxis, means
for oscillating said agitator about said axis, a ñlter dis
posed adjacent the top of said agitator and above said pre
determined level, means connected to said agitator and
defining a water passage from below said predetermined
level and in communication with said filter, and arplurality
passageway, rmeans defining at least one opening in the
of spaced vanes within said passage angularly disposed
top of said flaring base above each of said spiral water
passageways providing communication of said water in
said basket with said spiral passageways whereby when
the -agitator is ,oscillated, water in the basket will enter
said last named means and be lifted upwardly by said
spiral passageways through said radial space land will
with respect to said axis; said vanes being actuated by said
agitator to pumpv water upwardly through said water
discharge onto said Vfilter. '
'
Y4,. In a clothes washing machine, a clothes receiving
vbasket adapted to be ñlled with clothes and water to a'
predetermined level, an agitator disposed within said,
basket, means for oscillating said agitator, a ñlter dis-v
v passage from Vbelow said predetermined level to said
ñiter.
References Cited in the tile of this patent
UNiTED STATES PATENTS
2,909,051
2,916,900
2,976,711
Altorfer _____________ __ Oct. 20, 1959
Gerhardt ____________ __ Dec. 15, 1959
Smith ______________ __ Mar. 28, 1961
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