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Патент USA US3077004

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> Feb. .12, 1963
L. w. ZIMMERMAN
3,076,994
APPARATUS FOR CLEANING ART BRUSHES
Filed‘ Aug. 10. 1961
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INVENTOR.‘_
Leo W. 2| MMERMAN
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ATTORNEY
United States Patent 0 MlC€
1
3,6763%
APPARATUS FOR CLEANING ART BRUSHES
Leo W. Zimmerman, 428 W. Urmsby Ave,
Louisville, Ky.
Filed Aug. 10, 1961, Ser. No. 130,657
6 Claims. (Cl. 15-4154)
d?lh?hli
Patented Feb. 12, 1983
2
line 3—-3 in FIGURE 1, showing the tank or container
partially ?lled with cleaning ?uid and with an art brush
resting upon the contact unit, and
FIGURE 4 is an enlarged sectional detail view showing
the means for attaching the cover to the container.
Referring more particularly to the drawings, the nu
meral 10 denotes a tank or jar having a cover 11 thread
This invention relates to cleaning devices and more
especially to an apparatus suitable for the use in the
ably secured thereon as vat 12, said cover being provided
with a suitable liner 11a which serves as a seal or gasket
removal of paints and pigments from art brushes.
10 (FIG. 4).
In the production of artistic creations it is necessary
Disposed within tank 10 is a specially designed brush
to employ various types of art brushes, each equipped
cleaning unit 14 formed from a plurality of turns 15 of
with bristles adapted for a particular use. Moreover, the
round wire which are spirally coiled in a plane spaced
maintenance of these brushes in good condition is highly
substantially parallel to the tank bottom. Each turn 15
essential to their proper performance. Accordingly, dur 15 of the spiralled wire is preferably spaced equidistantly
ing usage of the brushes the bristles must be cleaned fre~
from adjacent turn or turns so that intervening slot or
quently to prevent accumulation of hardened pigment
slots 16 will be provided of constant width. The upper
thereon and to remove other substances which might dis
color the art work.
or contact surface of each turn 15 is convex as well as
the proximate walls of each intervening slot 16, thereby
Heretofore, various methods and devices have been 20 eliminating all horizontal ?at areas from the contact sur
employed to cleanse art brushes such as, for example by
face. Thus when the lower end of a brush 17 is pressed
agitating or rubbing the bristles over a flat perforated
downwardly upon the contact unit 14 as shown in FIG
plate or ?ne screen submerged in a liquid brush cleaning
URE 3, the cam or convex surfaces formed on the spi
compound,. Such prior devices have proven unsatisfac
ralled turns will separate bristles 17a into a plurality of
tory for the reason, among others, that a large proportion
layers and then guide these layers respectively into the
of the bristles buckle when pressed endwise against the
intervening slots. Upon still further downward move
flat surface areas and are prevented from spreading apart
ment of the bristles, a continued separation will occur
in the perforations provided in the screen or plate. As
longitudinally of the slots.
a result, there is a serious lack of uniformity in the
The Wire from which contact unit is formed has an
amount of agitation imparted to the bristles and in most 30 etched periphery 15a, said wire being made of hardened
cases the bristles are entangled and damaged.
aluminum or of other suitable hardened metal.
It is therefore an object of this invention to provide a
The outermost turn 15 of the ?at spiral unit 14 has
brush cleaning tank of the class described which is
an extension 19 which is spirally coiled about a vertical
equipped with a brush contact unit having its upper surface
axis which substantially coincides with the vertical axes
formed entirely from convex ridges and intervening slots
of the tank 10 and of the ?at spiral. Coil 19 is preferably
whereby the bristles engaging this surface will be divided
located below the outermost spiralled turn 15 and has
into a plurality of layers and guided into respective inter
its lower portion resting upon the tank bottom. In order
vening slots. Preferably the convex ridges are formed
to limit the downward movement of unit 14 relative to
from a round wire or wires of a relatively large diameter;
the bottom, the end of the innermost turn '15 of the ?at
however, other cross-sectional shapes may be employed 40 spiral 14 has a vertically extending portion or stop 21
with good results since inclined cam surfaces would also
integral therewith, said stop being located substantially
be effective as a dividing and guiding means for the
concentrically about the vertical axes of container 10,
bristles.
flat spiral 14 and supporting coil 19.
It is another object of this invention to provide novel
The brush cleaning tank functions in the following
means for resiliently supporting the brush contact unit
manner: The brush 17 with oil color in its bristles 17a
in spaced relation to the bottom of the tank.
is introduced into tank lit for cleaning. In the tank there
Other objects of the invention include the provision
is a quantity of solvent, thinner or other suitable liquid
of a brush contact unit insertable within a container and
cleaning compound 22. The bristles 17a are then rub
having its brush-engaging surface formed from a flat
bed back and forth across the etched convex ridges which
spirally coiled wire; to provide a resilient or cushioning
are formed upon each spiralled turn 15 of unit 14. Upon
support for said unit from a second spiralled wire coiled
application of downward pressure with the brush, the
about an axis normal to the plane of the ?at spiral and
convex or cam surfaces will initially separate the bristles
from an extension of one end of the ?at spiral; to provide
17a into several layers and then guide these layers into
from an extension of the other end of the ?at spiral, a
the
intervening slots 16.
stop for limiting the downward movement of the contact 55
The paint sludge 23 will be removed by the above
unit relative to the container bottom; and to provide a
described agitation and permitted to settle to the bottom
hardened spring wire as a means for spacing each turn of
of the tank. The stop 21 is of the proper length to pre
the ?at spiral and of the supporting spiral whereby the
vent the contact member 14 from being depressed low
natural tension will prevent excessive displacement.
enough to permit either the spiralled turns 15 or the
Some of the objects of the invention having been stated, 60 bristles 17a from contacting the sludge.
other objects will appear as the description proceeds when
It should be noted that variable degrees of resiliency
taken in connection with the accompanying drawings, in
are provided in the present apparatus, depending upon
which
the distance from the center of the ?at spiral 14 at which
FIGURE 1 is an isometric view of my improved ap 65 the brush makes contact. More speci?cally, the support
paratus for cleaning art brushes, with certain portions
ing coil 13? provides a source of resiliency which is equally
of the exterior housing therefor broken away;
effective and constant for brush pressure applied to any
FIGURE 2 is a vertical sectional detail view through
point on the top surface of the ?at spiral. This constant
the lower portion of the apparatus in FIGURE 1, but
resiliency is supplemented by a variable resiliency which
‘showing the brush contact unit and its support in ele 70 is made possible by the cantilevering of the outer end of
the flat spiral 14 from the upper end of the supporting
vation;
FIGURE 3 is a vertical sectional view taken along
coil 19. Thus, the inherent resiliency at various points
8,076,994
as
a
along the cantilevered ?at spiral 14 will progressively
tainer, said grid including a plurality of turns of sub
stantially spirally pitched round spring wire lying in a sub
stantially horizontal plane, means including one end of
said wire for resiliently supporting said grid in cantilevered
increase with the spiralled distance between the respective
points and the point on coil 19 where the cantilevered
spiralled wire is supported.
In the drawings and speci?cation a preferred embodi
position upon said bottom, and means including an ex
ment of the invention has been disclosed and although
tension of the end of said spring Wire for limiting the
speci?c terms are employed, they ‘are used in a generic
downward movement of the grid relative to said bottom,
sense and not intended for the purpose of limitation, the
said other end being normally spaced from said bottom.
scope of'the invention being set forth in the following
4. Apparatus for cleaning artists’ brushes and the like
‘claims.
10 comprising a vertically disposed cylindrical container
I claim:
having an opening at the upper portion thereof, a plurality
11. Apparatus ‘for cleaning artists’ brushes and the
of turns of substantially spirally pitched round spring
like comprising a vertically disposed container having
wire lying substantially in a horizontal plane spaced
an Opening at the upper portion thereof, a grid arranged
parallel to the bottom of the container‘to thereby form
in spaced relation to the bottom and side walls of said
a grid, the outermost turn of said wire being disposed
container, said grid including a plurality of turns of
adjacent the interior side wall of said container, and
substantially spirally pitched round spring wire lying in
means for [resiliently supporting said grid in cantilevered
a substantially horizontal plane, means for resiliently
position upon said container bottom, said supporting
supporting said grid in cantilevered position upon said
means including an extension of said outermost wire turn,
bottom, said last-named means including an extension 20 said extension being substantially helically pitched about
a vertical axis.
of one end of said spring Wire, said extension being sub
stantially helically pitched about a vertical axis, and
5. Brush cleaning apparatus as de?ned in claim 4 ‘and
means normally spaced from said bottom and including
an extension of the other end of said spring wire for
limiting the downward movement of the grid relative to
said bottom.
further comprising means including a vertically extend
ing portion of the inermost turn of said wire for limiting
the downward movement of said grid relative to said
bottom, said vertically extending portion being normally
spaced from said bottom.
2. Apparatus for cleaning artists’ brushes and the like
comprising a vertically disposed container having an
6. Brush cleaning apparatus as de?ned in claim 5
wherein the respective vertical axes of said cylindrical
opening at the upper portion thereof, a grid arranged
in spaced relation to the bottom and side Walls of said 30 container, said helically pitched supporting means and
said vertically extending wire portion substantially co
container, said grid including a plurality of turns of sub
stantially spirally pitched round spring wire lying in a
incide one with the other.
substantially horizontal plane, and means for resiliently
"References Cited in the ?le-of this patent
supporting said grid in cantilevered position upon said
bottom, said last-named means including an extension of 35
UNITED STATES PATENTS
one end of said spring Wire, said extension being substan
tially helically pitched about a vertical axis.
3. Apparatus ‘for cleaning artists’ brushes and the like
comprising a vertically disposed container having an 40
vopening at the upper portion thereof, a grid arranged in
spaced relation to the bottom and side walls of said con
2,789,297
Barr -g _____________ __ April 23, 1957
FOREIGN PATENTS
412,921
Great Britain _________ __ July 2, 1934
um
UNITED STATES PATENT OFFICE
CERTIFICATE in:
Patent N00 3VO76V994
‘
GRECTION
February 12I 1963
Leo We Zimmerman
It is hereby certified that error app ears in the above numbered pat
ent requiring correction and that the said Letters Patent sh ould read as
corrected below.
Column liq
line 6, before "end‘" insert —— other ~
Signed and sealed this 21st day of May 1963a
(SEAL)
Attest:
ERNEST w. SWIDER
Attesting Officer
DAVID L- LAIDD
Commissioner of Patents
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