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Патент USA US3051467

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Aug. 28, 1962
G. L. RICE
CLEANING TANK cLosURE APPARATUS
Filed May 11, 1959
Z3
212
3,051,457
YUnited States Patent O
1
3,051,457
CLEANING TANK CLOSURE APPARATUS
Gordon L. Rice, Whittier, Calif., assigner, by mesne as
signments, to Purex Corporation, Ltd., .a corporation
of California
1 „.
ICC
3,051,457
Patented Aug. 28, 1962
2
upwardly relative thereto about an axis parallel to the iirst
panel axis.
These and other objects and advantages of the invention,
as well as the details of an illustrative embodiment Will
be more `fully understood from the following detailed de
scription of the drawings, in which:
Filed May 11, 1959, Ser. No. 812,286
FIG. l is a top plan view of the cleaning receptacle
4 Claims. (Cl. 259-121)
liaving the improved baille means incorporated therewith,
This invention relates generally to improvements in
and in closed position;
the construction of cleaning tanks in which liquid is sub l0
FIG. 2 is a vertical cross section taken on line 2-2 of
jected to agitation so as to improve Iits cleansing eiliciency
FIG. l; and
eof the liquid upon its contact with soils to be removed
from parts inserted within a cleaning zone of the receptacle
or tank. More specifically, the invention concerns the im
proved construction of baille means kmovable into and out
'of overlying relation with the interior cleaning zone of
the receptacle for conñning agitated liquid therein.
FIG. 3 is a fragmentary elevation showing the baille
v panel assemblies in collapsed condition at opposite `sides
of the receptacle.
Referring iirst to FIGS. l and 2, the cleansing apparatus
10 includes an upright tank 11 which has front and rear
walls 12, and opposite side walls 13 together forming an
The present invention ‘has for its major object the f 3 interior Zone 14 for receiving articles to be cleansed.
provision of novel baille means operable, when in closed
Typically, such articles may comprise jet `engine parts
position overlying the interior zone of the receptacle, to 20 received downwardly Iinto the cleansing zone 14, in a
conilne agitated -liquid therein and also to pass the clean
parts basket not shown. The latter »seats on a -grating 17
sing liquid below the baille means, as -Well as liquid over
typically having egg-crate design and consisting of two
lying the baille means, through perforations in the baille i sets of integral panels extending vertically and at right
vpermitting restricted liquid ilow therethrough. Also, the
angles to one another to form spaces 18 therebetween into
latter is retractable to the side of the receptacle without 25 'which soils removed from the parts are adapted to settle
occupying an extended space at the receptacle exterior, for
out of the path of -liquid circulation in »the receptacle.
the purpose of permitting `downward insertion into and up
The opposite walls 12 of the tank have recesses 19
ward withdrawal from the cleaning zone of articles to be
»formed therein which open transversely and divergently
'cleansed ` therein.
toward the cleansing Zone 14. Each of the recesses is
In carrying out these purposes, the invention broadly 30 preferably in the form of a truncated pyramid having four
‘contemplates the use of a baille panel assembly movable
divergent sides, a vertically spaced pair 20 of which di
into overlying covering relation with the interior zone of
verge respectively toward the top and bottom of the re
"the receptacle for conñining agitated liquid therein, the
`panel-s in the assembly extending, when in open position,
ceptacle. Similarly, a horizontally spaced pair 21 of the
recess sides diverge respectively toward the oppositesides
in folded together collapsed relation at the receptacle side 35 41?» of the receptacle, and it will be understood that as a
result of this recess configuration the liquid is circulated
-wardly into the cleaning zone. Also, means are provided i „ in the tank in loops which merge in the central regions of
for moving the baille panel assembly toward and away
the cleansing zone, as indicated by the arrows in FIG. 2.
from the side of the receptacle and out of and into cover
Such liquid circulation is preferably eifected I‘by a hydro
40 dynamically designed and reversible thrust propeller 22,
-ing relation with the interior zone thereof.
rIlhus, when in open position the baille panel assembly is
typically a three blade screw propeller, operable to dis
-collapsed and folded at the inside of the receptacle, yet
place the `bulk of the liquid therethrough and alternately
`out of the way of article insertion and Withdrawal into
in axially opposite directions as distinguished ‘from the
and out of the receptacle. Further, the panel assembly
action of a centrifugal impeller which throws the bulk'of
whereby articles to be cleansed may then be placed down
does not ‘overhang the exterior of the receptacle to an 45 the liquid radially therefrom during impeller rotation and,
undesirable extent, such as would cause the cleaning unit
moreover, is not reversible to displace liquid in opposite
'to occupy excessive space `which is otherwise useful.
directions as desired. Each propeller is attached to a
Other objects and advantages of the invention include
horizontally extending shaft 23 projecting through the
the provision of a pair of baille panel assemblies and hinge
wall 12 at its ilat square head or base 24 from which
'means interconnecting the panels in each assembly to fold 50 diverge the upwardly and downwardly ilared wall por
itions 20 and the horizontally ilared portions Z1 of the
together upwardly‘in response to movement of the panel
receptacle wall 12. Attached to »the -base 24 is the hous
assemblies toward opposite sides of the receptacle, the
ing 28 of an electric motor, which is preferably reversible
panels in the assemblies extending substantially vertically
»in folded together and collapsed relation at opposite sides 55 so that the propeller 22 may be `driven `in opposite direc
tions. Each of these motors maybe of the induction type,
of the receptacle when in open position. Means for
so that by changing the polarity of the motor or the phase
moving the baille panel assembly includes an actuator and
relationship of the applied current >a reversal in the direc
a follower connected with the assembly and movable
tion of the drive transmitted to the propeller may be se
transversely by the actuator toward and away from the
Current is applied to each motor through switch
‘receptacle side. Preferably, each assembly includes two 60 cured.
ing mechanism indicated at 130 which is operable to re
panels, one of which is mounted :to pivot upwardly about
verse the direction of drive transmission to the propellers
afhorizontal axis adjacent the inner side of the receptacle,
the other panel being mounted by the follower to pivot
from the motors, for purposes to be described. A master
control switch is shown at 130.
'
'
3,051,457
3
Typical cleansing liquids consist of trichloroethylene,
ceiving 'articles to be cleansed by liquid within an interior
cyclohexane, and solutions of detergents, or acids or
zone of the receptacle and means within a receptacle
side recess for agitating said cleansing liquid, said re
bases, such as strong caustic solutions. Representative
ceptacle having a rectangular opening in a horizontal
soils o-n parts such as bearings, shafts, compressor blades,
sleeves and the like include greases, oils, dust, tar, sludge, Ul plane above the level of said agitating means, a baille
panel assembly extensible within said opening into sub
rust, resin, wax, carbon, lapping and builing compounds,
stantially horizontal overlying and covering relation with
and steel particles.
ythe interior zone of the receptacle for confining said agi
The tank or receptacle 11 has a sloping bottom 30
tated liquid therein, said assembly including hinge means
tapering downwardly and away from the grating 17 to
form a llow space 31 within which collected soils may
interconnecting panels to fold together upwardly thereby
llow laterally to the normally closed outlet 32. Liquid
is typically supplied to the tank through an inlet 33 in
lifting the hinge means in response to movement of the
wall 13.
Coming now to the construction of the pair of baille
panel assemblies previously mentioned, each of these is
generally shown at 34 to include two panels 35 hinged
together at 36 along a horizontal axis at the edges of the
panels, so that when in closed position the panel assem~
blies collectively extend substantially horizontally, over
lying and covering the interior zone of the receptacle. In
this coniiguration, each of the panels overlies approxi
assembly toward a first upright wall of the receptacle
dellning one side of the receptacle rectangular opening,
the panels extending substantially vertically in folded-to
gether relation so as to be conllned adjacent said upright
wall and within a vertical projection of the opening, and
means for moving said assembly transversely toward and'
away from said receptacle wall and out of and into cov
ering relation with said zone, said means being outside
said interior zone of the receptacle and the entire ex
tent of said means within said receptacle being confined
adjacent a second upright wall extent of the receptacle
deilning a second side of the receptacle rectangular open
ing normal to said one side of said opening, whereby
conilne agitated liquid within that zone.
The outer panel 35 in each assembly 34 is connected 25 articles to be cleansed may be placed downwardly through
said opening and into said interior zone and removed
`as by hinge means 37 with the upward extension of the
upwardly therefrom without interference from either said
end wall 12 of the receptacle, the hinge accommodating
folded panels or said means, the edges of the panels
upward pivoting of the panel about an axis generally
when extended into covering relation with the receptacle
parallel to the axis 36. Thus, the panels in each assembly
may be collapsed to extend substantially vertically in 30 interior defining leakage paths for ilow of liquid from
above the panels downwardly into said interior zone.
folded together relation at the inner side of the receptacle
2. The invention as dellned in claim l in which the ex
wall 12, as shown in FIG. 3, :allowing downward inser
tent of said means within said receptacle includes a screw
tion and upward removal of parts into and ‘from the clean
mately one quarter of the upwardly projected area of the
cleansing zone 14, and acting together the closed panels
extending axially transversely in the direction of baille
ing zone 14.
The means for moving each panel assembly 34 toward 35 panel assembly toward and away from said ñrst wall, said
and away from the receptacle side wall includes an ac
tuator 40 comprising a worm gear extending transversely
in the direction of assembly movement, >and a follower 41
assembly including a follower mounted on said screw,
said means also including a drive outside the receptacle
for rotating the screw thereby to bodily advance said fol
connected with the actuator panel in each assembly and
lower therealong in said transverse direction.
movable transversely toward and away from the side of
the receptacle. The follower 41 is mounted on the worm
gear in threaded relation therewith to `be movable there
by, and is also connected to the actuator panel 35 by
hinge 42, the axis of which extends parallel to the axis
36. Rotary drive is »transmitted to the worm gear 40 45
3. In combination Iwith an upright receptacle for re
ceiving articles to be cleansed by liquid .within an in
terior zone of the receptacle and means within 4receptacle
sid‘e recesses for agitating said cleansing liquid, said re
ceptacle having a rectangular opening in a horizontal
plane above the level of said agitating means, a pair of
as by a suitable electric motor and drive mechanism gen
baille panel assemblies extensible toward one another
erally indicated `at 43.
The baille panel assemblies are guided in relation to
within said opening into `subst-antially horizontal over
lying and covering relation with the interior zone of the
the opposite side 13 of the receptacle by channeled ways
44, which are provided to extend generally parallel to the
worm gear 40 and at the inner sides of the receptacle walls
receptacle for conllning said agitated liquid therein, said
assemblies including hinge means interconnecting the
panels in each assembly to fold together upwardly thereby
13, `for reception of an end extensions of the hinges 42
lifting the hinge means in response to movement of the
carried by the panels.
respective assemblies toward first and second upright
walls of the receptacle defining opposite sides of the re
'I'he baille assemblies are of the leaking type; that is,
they will permit upward escape of pressure from the 55 ceptacle rectangular opening, the panels extending sub
stantially vertically in folded-together relation so as to
cleansing zone. Therefore, should steam rform, it will
be everywhere confined adjacent said iirst and second up
escape upwardly through the baille panel assemblies, while
lat the same time the latter conilne the agitated liquid with~
right walls and within a vertical projection of said open
ing, and means for moving said assemblies transversely
in the tank. Furthermore, the baille panel assemblies
when in closed position, as seen in FIGS. l and 2, may be 60 toward and away from said receptacle walls and out of
used for separating the liquid in the cleansing zone from
and into covering relation with said zone, said means
sealing liquid in the region 50 above the baille panel as
being outside said interior zone of the receptacle and the
entire extent of said means within said receptacle being
mate in the liquid seal, which typically comprises water, 65 conñned adjacent upright wall extent of the receptacle de
»are adapted to ilow downwardly through the assemblies
lining a third side of the receptacle opening normal to
semblies.
Corrosion -inhibitors such as potassium `chro
into the cleansing solution, there being suillcient restricted
communication between the latter and the liquid seal to
permit such slow washing of the corrosion inhibitors into
said opposite sides of said opening, whereby articles to
be cleansed may be placed downwardly through said
opening and into said interior zone and removed up
the cleansing solution. Leakage through the baille panel 70 wardly therefrom without interference from either said
assemblies will occur at ythe locations of the two hinges
36 and 37 and also at the junctures ofthe two baille panel
assemblies, as indicated by line 51.
I claim:
1. In combination with an upright receptacle for re 75
folded panel or said means, the edges of the panels when
extended into covering relation with the receptacle in
terior deñning leakage paths for flow of liquid from
above the panels downwardly into said interior zone.
4. The invention as defined in claim 3 in which the
3,051,457
5
extent of said means within said receptacle includes a
screw extending axially transversely in the direction of
bañie panel assembly movement toward and away from
said receptacle opposite sides, said assemblies including
followers mounted on said screw, said means also in
cluding a drive outside the receptacle for rotating the
screw thereby to bodily advance said followers simul
taneously in opposite directions therealong, and trans
verse ways extending parallel said screw adjacent the
third and fourth sides of the receptacle opening and in 10
terlitting said assemblies for guiding said assemblies dur
ing rotation of the screw.
6
References Cited in the ñle of this patent
UNITED STATES PATENTS
553,677
892,317
1,463,346
1,508,968
1,511,697
1,768,714
1,868,599
2,256,008
2,504,727
2,838,289
Hoyt _______________ .__ Jan. 28,
Scott ________________ .__ June 30,
Walker ______________ __ July 31,
Green ______________ __ Sept. 16,
Westby ______________ -_ Oct. 14,
‘Riton ________________ __ July 1,
Griñin ______________ _.. `Tuly 26,
Armstrong __________ .__ Sept. 16,
Post ________________ __ Apr. 18,
Northrup ____________ __ June 10,
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