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Патент USA US2405849

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Aug. 13, 1946.
Filed NOV. 13, 1943
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MALCOLM 0. mask
Patented Aug. 13, 1946
.Malcolm D. Biker, Detroit; Mich.
Application November 13,1943, ‘Serial’ N0.'l51'0;2-23
4 Claims. (c1. v4--.,206>
‘This invention relates to~over?ow devices for
inga variable level :of - liquid-below the usual- out
liquid containers, the principal Object being to
?let. Thus'int atibath tubgfor instance, with-a con
‘provide a 'means’associate’d withthe container
whereby a desired-depth of liquid may be main
.stant in?owcofwatergrprovidemeans 'for a con
tained therein under =a-constant ?ow of liquid ‘
The particular ‘function of the device is to dis
charge'the liquid from the surface of the ‘body
thereof in the. container'to the outlet and by use
‘of the~device in a bath-tub the scum which ac
cumulates on the surface of the waterwithin 'a
:stant.over?owabelowrthe level of the usual outlet
tindicated at’rZ. .f-I‘hetdeviceconsists of a'flexible
‘shield .4; which-may be formediofirubber or- other
?exible material, asifor 'useYin-E a'bath'tub, having
‘a’ peripheral-flange I5 'thereabout». and longitudinal
"ribs-*6‘onitheiouter faceof ,thezbody to contact
:the ‘end'rsurface ‘off-the" tub-adjacent‘ the outlet,
The -: ribs*6~-,and>:liange '5 provide» channels “open
bath tub5 is, in my improvedapparatus, constantly
at the upper end to the interior of theltub. ZI‘he
?ange .5 extends alongthetwo-edges and the lower
5being discharged to the outlet an'di'thus, with’the
inlet valve open to provide a desired volume offflow
end wof the device, .-as indicated .in Figs. 1 ~ and ,2,
per unit of time thereinto, a constant level of 15 and-.the lower horizontal portion of the-body ‘of
liquid is maintained in the tub.
thetdevicecloses ,theoutlet to thebodyso that the
*Whilel have shown a‘bath tubiin the drawing,
only liquid that “CanS?OW‘PtOYthB outletis liquid
*my‘improved over?ow device would readily vfunc
‘thatnver?ows .the upper. end of ‘the shield into the
tion with other'types-of containers wherein the
1 space between thebody=4nand~ the inner-surface of
?oating‘matter that ‘may be introduced‘ with fluid 20 - the-tub orcontain'er. ~
into the container is constantly discharged to the
Thus, with "water :?owing :into »..the tub during
the time a personiis bathing-thezscumondirt that
rises-to the surtaceeofthealiquid is-being con
These‘and other features an‘dobjects‘o'f-the in
' vention-are‘hereinafter more fully<'described and
- stantly :discharged ‘to ».-the- outletand va constant
claimed and shown in-‘preferred’form ini‘the‘ac
'companying drawing in which
:level- of practically clear : liquid is ‘maintained -in
Fig. 1- is "a ‘sectional elevation of the ‘discharge
end of a container such as a bathtub ‘showing- my
improved over?ow‘ device.
Fig; 2 is a plan view‘ thereof.
‘the tub.
The ‘outlet ?tting,'aindicated .atB. Fig. .1 ,and at
=3a Fig. @3,>.may~be :of anyv desired form as this
invention is not-‘- .eon?n-edtto the-form of theusual
34.) bath ‘tub outlet ?ttingor the similar ?ttings of
Fig. ‘3‘is-a vertical section‘ of a portion of'the
container showing an alternative form of the
~ other liquid containers in ‘which, during its use,
za'constantwsupplyf of liquid-containing a material
overflow means.
that would float .to the surface is required to. be
vdischarged while maintaining aconstant level in
Fig. 4‘is a plan view- of the “form o‘fthe over
c?ow means shown in Figf‘S.
the container.
Fig. “5 is an enlarged cross v‘section taken ‘on
line 5-5 of Fig. '3.
In many liquid containers wherein material in‘a
‘?uid form containing v?oating particles is dis
charged or in containers such as bathtubs where
in a scum tends to accumulate on the surface of
the liquid, it is desirable in either case to provide
vThe shield-4 includingithe integralzribs .6 1s
preferablyformed» of rubber, or‘ other ?exible ma
terial of ' theisame structural features may beem
.ployed. Thus-theshield maybe variedin posi
,tioneasindicated- bydotted- lines aland .al to pro
<videi~forxa 'greateror-lesser height Of- liquid-110 be
:maintained‘ in the body; of the containeror tub.
In the alternative form of the invention found
in Figs. 3, 4 and 5 the tub or receptacle Ia has an
in the container.
45 outlet 3a which extends into and its lower ends
spaced from an enclosing ?tting 9 to which the
Inthe form of the invention shown in Fig, 1
outlet conduit II] is connected. It is not material
the container I has the usual outlet 2 adjacent
however to this invention what speci?c structural
the top at one end of the container and the out
form of outlet is utilized. It is desirable, how
let as indicated at 3 in the bottom of the tub or
ever, in the structure shown in Fig. 2 that a cap
container. With liquid flowing into the tub from
member I I be provided spaced from the bottom of
an inlet not here shown the tub could ?ll to the
the recess I2 to sustain the ?exible shield I3 from
outlet indicated at 2. In order to maintain the
being forced into closing relationship with the
liquid level below the outlet and in order that
for a constant discharge of the contaminated
liquid accumulating at the surface of the liquid
foreign material rising to the surface of the liquid
may be discharged I provide means for maintain~
outlet member or conduit 3a.
The shield I3 in the form of the invention
shown in Fig. 3 is a ?at piece of material of ?ex
ible character while the end of the body of the
container is provided with ribs 1 which spaces the
vertical face of the shield from contact with the
wall I 4 of the container. Thus the same function
‘ is secured in that a space or a series of spaces may
be provided between the shield and the wall [4 of
the container, as indicated at 13a in Fig. 5,
through which water may over?ow to the outlet.
The member 13a of Fig. 3 may be varied in posi
tion after the manner suggested in the form
shown in Fig. 1 to vary the depth of liquid in the
bath tub or other container.
tom to discharge to the tub outlet, the arrange
ment permitting adjustment of the shield to vary
the height of the open end of the passageways
from the bottom of the tub, thereby providing for
continual flow of liquid to the tub from the inlet
without materially varying the level of the liquid
in the tub.
2. An over?ow device for a liquid container
having side and end walls and a bottom having an
10 outlet, comprising a ?exible rubber shield hav
While I have shown the shield or wall of the
container as having a series of grooves providing
for ?ow of liquid from the surface thereof in the
container to the outlet, it is'pointed out that the
contacting surface of one or the other of the ele
ments may be shaped to provide a single groove of
the desired cross sectional area and while I have
described a ?exible shield the invention is not
con?ned to a shield having ?exibility. In either
case the hydrostatic pressure of the liquid in the
container maintains the shield in position. It is
further to be understood that the groove or 25
grooves preferably have a cross sectional area
ing a series of parallel ribs on one surface thereof
‘providing a means for spacing the body of the
shield from a wall and the bottom of the con
tainer adjacent the outlet, said ribs providing pas
sageways open to the interior of the container at
one end only and to the outlet, the ?exibility of
the shield permitting the same to be adjusted in
position longitudinally of the bottom and end wall
of‘the container to vary the height of the open
end of the passageway from the bottom of the
container and otherwise prevent ?ow of liquid
from the container to the outlet.
3. An over?ow device for a liquid container hav_
ing side and end walls and a bottom having an
outlet, comprising a shield formed of a ?at sheet
of material having a passageway open at one end
greater than that of the inlet.
to receive liquid from the surface of the body
thereby vary the position of the upper end of the
shield relative to the bottom of the container, and
thereof in the container and at the opposite end
Either form of the invention serves the same
opening to the outlet, the shield being ?exible Der
purposes; that is to provide for a continuous ?ow
of water of liquid from the surface thereof in a 30 mitting manual movement thereof along a wall of
the body and bottom thereof about the outlet to
container by reason of the continued ?ow of liquid
The invention is thus serviceable in many in
stances to not only maintain a desired level of
being maintained in adjusted position by the hy—
liquid in a container but to cause a continued 35 drostatic pressure of the liquid in the container.
4. An over?ow device for a bath tub having a
main outlet in its bottom adjacent one end and
an over?ow outlet in said end adjacent the top,
remaining in the'body of the tub or container is
comprising a comparatively thin ?exible shield of
in a practically pure state during the use of the
device irrespective of the fact that extraneous ma 40 a desired width positionable in the tub to seal the
outlet in the bottom of the tub and to extend up
terial of less speci?c gravity may be introduced
wardly along said end of the tub and movable to
into the liquidbody during its use.
vary the height of the upper end of the shield
From the foregoing description it is believed
above the tub bottom, the surface of one of the‘
evident that the features and objects of the inven
flow of liquid from the surface of the body there—
of to the outlet. By this arrangement the liquid
tion are attained by the structural arrangement 45 members facing the other having parallel ribs
spacing the shield from both the said end and
and relationship of the various parts and that
bottom of the tub and providing a series of par
various changes may be made therein without de
allel passageways open at the upper end of the
parting from the spirit and scope of the invention
shield providing for ?ow of liquid from the tub
as set forth in the appended claims.
50 to the outlet, the ?exibility of the shield permit
Having thus fully described my invention, its
ting variation in the position of the upper end
utility and mode of operation, what I claim and
thereof relative to the bottom of the tub and per
desire to secure by Letters Patent of the United
mitting longitudinal movement thereof along the
States is:
1. An over?ow device for a bath tub or other
. end wall and bottom of the tub to position the
liquid container having a main outlet in its bot 55 upper open end of the passageways at the de
sired height above the tub bottom to thereby pro
tom adjacent one wall thereof and an over?ow
vide for a predetermined liquid level in the tub
outlet in the said wall adjacent’ the top, compris
and permitting a continual flow of liquid'to the
ing a ?exible shield formed of a comparatively
tube without material variation in the level of
?at sheet of material provided with parallel ribs
on one surface thereof and providing, when the 60 the liquid therein.
parts are in position, passageways for liquid open
at the upper end to receive liquid and at the bot
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