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Патент USA US2115043

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April 26, 1938.
D. sAMlRAN
2,115,043
FLUID SEGREGATING APPARATUS
Filed Ján. 29, 1936
|
m lllllî
‘In
1x! 'ENTOR
DA .f//D
SAM/RAN
Patented Apr. 26, 1938
2,115,043
UNITED STATES PATENT OFFICE
2,115,043
FLUID SEGREGATING APPARATUS
David samiran,payton, ohio
Application January 29, 1936, Serial No. 61,361
'
14 claims.
(ci. 137-68)
(Granted under the act of March 3,1883, as
amended April 30, 1928; 370 O. G. 757)
The invention described herein may be manu
factured and used by or for the Government for
governmental purposes, without the payment to
me of any royalty thereon.
The present invention relates generally to ap
paratus for the automatic isolation of fluids and
more particularly to apparatus having float
means responsive to fluids having densities great
er or less than a ñuid of given density and is par
10 ticularly concerned in the adjusting of a ñoat
controlled device to a desired density.
Reference is made to my copending application
Serial No. 448,391,‘ñled April 29, 1930, in which
I have described a novel method and means for
15 obtaining an adjustment of a float to a prede
termined specific gravity or density by adjusting
the same within a liquid of the same or a known
speciñc gravity, and to my copending application
Serial No. 610,297, ñled May 9, 1932, in which I
have described an improved float device which is
2c. normally adjusted to have a known buoyancy in
a given reference medium and which is charac
terized by including novel means for varying the
volume of the ñoat to any desired density so that
the resultant buoyant force of the ñoat due to the
change in the density of the overlying liquid with
30
which the reference medium is associated will
cause a change in the immersion of the float in
versely proportional to the difference in the densi
ties of the reference medium and that of the over
lying medium.
The present invention has for its primary ob
Vject to provide an improved method of and means
for automatically adjusting a ñoat device to a
d predetermined weight.
My invention has for another object to provide
a new and improved self-adjusting float con
trolled valve device that, when adjusted to a pre
determined weight for a reference medium, its
40 upper surface will automatically assume a posi
tion between the upper surfacelevel of a refer
predetermined weights. said means including
graduated means for visually indicating when said
float device is adjusted to have a Weight slightly
less than the weight of the reference medium
displaced by its entire volume but greater than 6
the weight of a similar volume of any other medi
um of less density.
A still more important object of the present in
vention is to provide in a self-adjusting float con
trolled valve device of this character a new and 10
novel means for effecting a change in the rela
tion between the volume of the float and the
quantity of weighting liquid, said means being`
self-contained within the float device and capable
of adjustment relative to a ñxed ñoat reference. 16
With these and other objects in view, the in
vention consists in the construction and arrange
ment of the several parts, all of which will be
first duly described and afterwards specifically
pointed out in the appended claims.
Referring more particularly to the accompany- 20
ing drawing:
Fig. 1 is a vertical sectional view of my im
proved ñoat device;
Fig. 2 is a diagrammatic view of the float device 25
as applied to a fluid segregating apparatus illus
trating the relation of the several elements when
said device is adjusted to a light liquid;
Fig. 3 is a diagrammatic view of the ñoat de
vice adjusted to a heavy liquid such, for example, 30
as water; and
'
Figs. 4 to 8, inclusive, illustrate diagrammat
ically a cycle of operation of the ñoat device.
Referring more particularly to the drawing
wherein corresponding parts are designated by 35
like numerals throughout the several views, the
apparatus in the preferred embodiment of my in
vention herein illustrated, in connection with
which the float means to be hereinafter described
embodies the principles set forth in my copending 40
application Serial No. 448,391, ñled April 29,
1930, comprises an outer casing I0, which in
medium having a density less than the density of cludes a removable top plate II, an upper inlet
the reference medium, which position will vary passage I2, a deflector I3 and the outlet passage
I4. The outer casing I0 is provided with a float 45
in proportion to the difference in their densities.
A further object of the present invention is to chamber I5. This chamber is conventionally
provide in a self-adjusting float controlled valve shaped and is provided with an upper ñanged
device of this character novel means adapted for portion IB which may be suitably secured to the
lence medium and the upper surface level of any
adjusting said device .to any one of a number of , peripheral edge portion of the top plate II.by
predetermined weights to which said device is ' any suitable means such as bolts or rivets (not 50
capable of adjustment.
A still further object of the present invention is
to provide in a self-adjusting float controlled
valve device of this character novel means for
adjusting said device to any one of a number of
shown). vThe bottom portion Il of the ñoat
chamber is provided centrally with a valve seat
I8 andl is also provided with a drain cock I9
adjacent to the valve seat which forms a dis
charge passage for draining fluids.
55
2
2,115,048
As shown more particularly in Fig. 1 a valve de
a series of lgraduations 44 which cooperate with
vice 28 is disposed within the iioat chamber I5.
This device is controlled by a iloat, generally
identified by the letter A, which is constructed
of two cylindrical sections-an upper section 2I
the upper edge of the upper locking nut 38 to
indicate the adjustment of the standpipe 48 with
respect to the reference 35 to indicate when the
and aY lower section 22. These sections have their
open ends joined together by telescoping the lower
open end of the upper section- 2| within the upper
enlarged end of the lower section 22. The tele
standpipe has been positioned to measure a de
sired quantity of reference medium in adjusting
the iioat device tor one of a number of predeter
mined densities to which it is adjustable. The
lower closed end 25 of the'iloat A is provided with
10 scoping portions of cylindrical sections 2I and ' an inlet orifice 45, the purpose of which is to
22 may be secured together by any suitable means permit liquid to flow into the float chamber 23
as by brazing to render the joint between the when the float device is immersed in liquid con
sections iiuid tight. The iioat is provided with tained in theiloat chamber I5. It is also obvious
a chamber 23 adapted for receiving a iluid for that the lower openings 32 provided in the up
15 adjusting the float in substantially the identical standing member 28 permit ready access of liquid 15
into the float chamber through the interior of
manner disclosed in my above-referred to co
pending application. The cuter or closed end 24, said member. The effective cross-sectional area
25 of each cylindrical section, respectively, is
formed with a spherical section, the base diam
20 eter >oi’ which is equal to the diameter of each
section and the radius of curvature of which
may be computed by calculation in the manner
set forth in my above-identified copending ap
plication.
v
The iioat A is provided with upper and lower
central openings 28 and 21, respectively, within
which is disposed an upstanding tubular member
28, the extreme ends oi' which extend exteriorly
of the iioat A as shown in Fig. 1. Intermediate
its ends the tubular member 28 is provided with
cut-out portions 29, 38 forming passageways con
necting the interior of the iloat chamber with the
inner bore of the upstanding tubular member 28.
The lower end of the tubular member 28 is formed
35 with a needle valve 3I adapted to engage the valve
seat I8. There is also formed in the tubular
member 28 adjacent the needle valve 3| a. plu
rality of openings 32 which permit the entrance
of liquid from the float chamber I5 into the tu
40 bular member 28.
’I'he opposite or upper end of the tubular mem
ber 28 is provided with an upper needle valve
33 which is adapted to engage with an upper
valve seat 34 provided at the entrance of the out
45 let passage I4.
The upstanding tubular member 28 is adjust
ably mounted within the ñoat A in order that the
distance of the cut-out portions 29 and 38 from
the upper edge, designated by the numeral 35,
50 may be varied as desired.
The upper edge 35
represents a reference which is used in deter
mining the depth to which the float device must
sink in the reference medium in adjusting the
ñoat device as a whole to have the desired buoy
ancy. In order to adjustably mount the tubular
member 28 within the float A, I provide upper
and lower stuiîing boxes 36 and 31 having the
usual locking sleeves and nuts 38 and 39, re
spectively, the operation of which tends to com
60 press the packing 48 and 4I provided in each
stuiling box. Obviously, when the locking sleeves
are loosened, the upstanding tubular member 28
may be moved relative to the iioat A in effecting
an adjustment of the cut-away portions 29 and
65 38 or away from the reference 35.
The upper
end of the tubular member 28 is provided with
openings 42. There is also provided in the upper
end of the tubular member 28 a centrally dis
posed tubular member or standpipe 43 open to
of the inlet orifice 45 is made suiiiciently large to
permit the admission of the reference medium
into the ñoat chamber 23 in adjusting the iioat 20
device to said reference medium but is restricted
in an amount suil‘icient to prevent drainage of
the admitted reference medium from the float
chamber 23 as long as the head of the liquid in
which the float device is immersed is greater than 25
the head of the reference medium admitted into
the iioat chamber 23.
Having thus described the component parts o1'
the invention, its operation is as follows: Let us
assume that the chamber I5 is iilled with a light 30
liquid as diagrammatically shown in Fig. 2. 'I'he
upstanding member 28 is adjusted so that the
lower open end of the standpipe 43 is approxi
mately in the position indicated in Fig. 2. The
setting of the upstanding member 28 to this posi 35
tion-that is to say, to bring the lower edge of
the standpipe 43 into adjusted position with
respect to the reference edge 35 of the float, may
be accomplished through the medium of the grad
uations 44 heretofore-mentioned. Obviously, if
the iioat is immersed in the liquid contained
within the chamberv I5, the liquid in this cham
ber will readily enter the ñoat chamber 23 through
the inlet orifice 45 and the openings 32 provided
in the lower end of the upstanding tubular mem
ber 28. Liquid in the ñoat chamber 23 will cause
the float device to sink into the liquid contained
within the chamber I5 until the level of the liquid
in the chamber 23 reaches the lower open end of
45
the standpipe 43. The liquid, in rising in the 50
float chamber 23, will chase the air from said
chamber through the standpipe 43 and out
through the upper openings 42 heretofore-men
tioned. When the level of the liquid in the float
chamber 23 reaches the lower edge of the stand 55
pipe 43, a desired volume of air will be trapped
in the upper end of the float chamber as repre
sented in Fig. 2. Thus, the float device is caused
to assume a predetermined position within the
liquid in which it is immersed with the upper 60
level of the liquid substantially _coincident with
the line of reference formed by the upper edge
35 of the float A. When this condition exists,
the ñoat is “adjusted” to the desired reference
vmedium or the medium in which it is immersed. 65
Fig. 3 illustrates the lrelative position of the
upstanding tubular member 28 and the float A
when said device is adjusted to a heavier liquid.
`It will be noted in referring tov Fig. 3 that the
upstanding tubular member 28 has been so ad 70
70 the atmosphere through the openings 42 hereto
fore-mentioned and having its lower end disposed justed that a greater quantity of liquid is ad
at a point adjacent the upper edge of the cut
mitted into the iloat chamber 23. Obviously, a
out portions 29 and 30, as shown in Fig. 1. The lesser quantity of air will be trapped in the upper
exterior surface of the upstanding tubular mem
portion of the float chamber 23 when so adjusted.
75 ber -28 adjacent its upper end is provided with It should be noted, however, that in this adjusted 75
3
2,115,048
position for the heavier liquid, the float will be
segregated by a simple manual adjustment of the
immersed in the new reference medium so that
standpipe I3.
the upperV level of the heavier reference medium
will be substantially coincident with the line of
reference formed by the upper edge 35 of the
float in the manner heretofore illustrated in
connection with Fig. 2.
Fig. 4 illustrates the operation of the float de
vice when applied to a fluid segregating appa
10 ratus. In this figure the standpipe 43 of the
ñoat device has been adjusted for a heavy liquid
in the manner illustrated in Fig. 3. Suppose that,
when so adjusted, the float chamber I5' is com
pletely iilled with a lighter liquid. Obviously,
the float device will not be buoyant in this lighter
liquid. Consequently, the float will not rise with
in the float chamber I5 but the lower needle
valve 3i will seat on the valve seat I8 and, con
sequently, as long as the lighter liquid enters
the float chamber I5 through the inlet passage
i2, it will pass from the float chamber i5 through
the outlet passage i4.
Fig. 5 illustrates the cycle of operation of the
apparatus when a heavier liquid, or the liquid to
which the float device has been adjusted, begins
to enter_the float chamber I5. Obviously, the
lower needle valve 3i will remain seated as long
as the upper level of the reference medium indi
cated by the letter B is below the reference line
formed by the upper edge 35 of the float. Should,
however, the upper level of the reference medium
increase to an extent to completely fill the float
chamber i5, as illustrated in Fig. 6, the ñoat will
become buoyant and move upwardly so as to
35 close the outlet passage Il and prevent the flow
of the liquid therethrough. Obviously, with theA
float in the position illustrated in Fig. 6, the lower
needle valve 3i will be unseated thus permitting
the flow of the heavier liquid from the float
chamber i5.
As long as the head of the liquid in the float
chamber I5 is greater than the head of the refer
ence medium contained within the float cham
ber 23, the liquid contained within the said float
chamber 23 will remain therein. When, how
ever, the head of the liquid in the ñoat chamber
l5 reaches the level C indicated in Fig. 8, the ref
erence medium contained within the float will
escape through the inlet orifice l5 heretofore
mentioned.
It is apparent from the foregoing detailed de
scription that I have provided a self-adjusting
ñoat controlled valve device, that is to say, one
which is capable of adjusting self to any desired
reference medium and which is so constructed
and arranged as to be automatically drained of
the reference medium when the conditions above
mentioned in connection with the operation oi’
my device are brought into existence.
Should it be desired to effect a segregation oi’
liquids having specific gravities greater or less
than the specific gravity of the liquid in which
f»
Having thus fully described the invention, it
will be obvious to those skilled in the art that. the
construction shown and described is subject to
changes, alterations and modifications. I am
fully aware of this and it is to be understood that
the specific construction shown in the accom
panying drawing is merely illustrative of the
present preferred construction of my invention
and that I consider myself clearly entitled to all
such changes and modifications as fall within
the limit and scope of the appended claims.
I claim:
'
1.y A iioatr device adapted to be adjusted to a
predetermined density relation with respect to
any given liquid such as to ñoat in said liquid
with a non-liquid displacing portion of said float
device of relatively small but predetermined value
representing, for each mean unit density of said
float device, a density diiîerential between said
float device and said liquid that is less than the
density differential between said given liquid and
another liquid oi less density comprising, a con
tainer having a chamber provided with an inlet
opening at its lower end for admitting said liquid
when said float is immersed therein and means
cooperating with said float chamber for auto
matically determining the quantity of liquid to be
admitted for obtaining the relation of the volume
of the float and the combined weight of the ad
mitted liquid and said container necessary for
said predetermined density relation.
2. A ñoat device adapted to be adjusted to a
predetermined density relation with respect to 35
any one of a plurality of liquids such as to float
in said liquid with a non-liquid displacing por
tion of said float device of relatively small but
predetermined value, representing, for each mean
unit density of said float device, a density differ
ential between said float device and said liquid
that is less than the density differential between
said given liquid and another liquid of less density
comprising, a container having a chamber pro
vided with an inlet opening at its lower end for
admitting said liquid when said float is immersed
therein and adjustable means cooperating with
said float chamber for automatically determining
the quantity of liquid to be admitted for obtain-y
ing the relation of the volume of the float and
the combined weight of the admitted liquid and
said container necessary for said predetermined
density relation.
3. A float device adapted to be adjusted to a
predetermined density relation with respect to 56
any one of a plurality of liquids such as to iioat
in said liquid with a non-liquid displacing por
tion of said float device of relatively small but
predetermined value representing, for each mean
unit density of said float device, a density- dii' 60
ierential between said float device and said liquid
that is less than the density differential between
accomplished byv varying the position of the
standpipe 4,3 with respect to the “reference”
said given liquid and another liquid of less den
sity comprising, a container having a chamber
provided with an inlet orifice at its> lower end for 65
formed by the upper edge 35 of the float. In so
doing, the relation between the volume of the
the exterior surface of said container for indi
the float is normally adjusted, this same may be
float and th`e quantity of liquid contained there
in may be increased or decreased to cause the
70 same to effect a change in the displacement of
the liquid in which the float device is immersed.
By means of this construction, it is possible to
adjust the float device to any desired density
within a given range so that a segregation of fluids
admitting liquid therein, a reference means on
cating the depth approximately, to which said
ñoat must sink in a given 'liquid for obtaining said
predetermined density relation and means co 70
operating with said float chamber and adjustable
with respect to said reference means for auto
matically determining, in a preadjusted position,
the quantity of liquid to be admitted for obtain
„ lng the relation of the volume of the float and the 'l5
having
densities
within
the
given
range
may
be
75
4
2,115,0«8
combined weight of the admitted liquid and said
container necessary for said predetermined den
sity relation.
Ífloat device, a density differential between said
ñoat device and said liquid that is less than the
density differential between said given liquid and
4. A iloat device adapted to be adjusted to a
another liquid of less density comprising, a con
tainer having a chamber provided with an inlet
predetermined density relation with respect to
any one of a plurality of liquids such as to iloat
in said liquid with a non-liquid displacing por
opening at its lower end for admitting said liquid
when said float is immersed therein, an upstand
tion of said ñoat device of relatively small but
predetermined value representing, for each mean
unit density of said float device, a density diiïer
ential between said float device and said liquid
ing hollow valve carrying member slidably mount
that is less than the density differential between
tween said valve carrying member and said ñoat
chamber and means carried by said valve carry
' said given liquid and another liquid of less den
ed in said float, upper and lower needle valves
mounted at the upper and lower ends respectively 1 o .
of said member, a connecting passageway be
sity'comprising, a container having a chamber
ing member for obtaining the relation of the iloat
provided with an inlet opening at its lower end
for admitting said liquid when said ñoat is im
mersed therein, adjustable means cooperating
with said float chamber for automatically deter
mining the quantity of liquid to be admitted for
and the combined weight of the admitted liquid
20 obtaining the relation of the volume of the float
and the combined weight of the admitted liquid
and said container necessary forV said predeter
mined density relation, and means for locking
said adjustable means in any of its4 adjusted
positions.
5. A float device adapted to be adjusted to a
predetermined density relation with respect to
any one of a plurality of liquids such as to iioat
in said liquid with a non-liquid displacing por
tion of said float device of relatively small but
predetermined value representing, for each mean
unit density of said iloat device, a density differ
and said container necessary for said predeter
mined density relation.
.
8. A iloat device adapted to be adjusted to a
predetermined density. relation with respect to
any given liquid such as to iloat in said liquid 20
with a non-liquiddisplacing portion of said ñoat
device of relatively small but predetermined Avalue
representing, for each mean unit density of. said
iloat device, a density differential between said
ñoat device and said li uid that is less than the 25
.density diiferential b Ween said given liquid
vand another liquid of ess density comprising, a
container having a chamber provided with an in
let opening at its lower end for admitting said
liquid when said float is immersed therein, an
upstanding hollow valve carrying member slid
ably mounted in said float, upper and lower needle
ential between said iloat device and said liquid valves mounted at the upper and lower ends
that is less-than the density diil'erential between .respectively of said member, a connecting pas
said given liquid and another liquid of less den
sageway between said valve carrying member
sity comprising, a container having va chamber and said iloat chamber and means carried by 35
provided with an inlet opening at its lower end said valve carrying member for obtaining the
for admitting said liquid when said ñoat is im
relation ot the ñoat and the combined weight
mersed therein, adjustable means cooperatingY of the admitted liquid and said container neces
with said float chamber for automatically deter
sary for said predetermined density relation, said ,
mining the quantity of liquid to be admitted for means comprising a standpipe disposed within
obtaining the relation of the volume of the iloat said valve carrying member having its upper end
and the combined weight of the admitted liquid open to the atmosphere and its lower end reg
and said container necessary for said predeter
istering with said connecting passageway. ,
mined density relation and indicia means on said
9. A ñoat device adapted to be adjusted to a
last mentioned means to indicate the diil’erent predetermined density relation with respect to any
positions to which the same may be adjusted for given liquid such as to float in said liquid with a
obtaining the desired density relation corre
non-liquid displacing portion of said float device
sponding to different predetermined liquids.
of relatively small but predetermined value 'repre
6..A ñoat device adapted to be adjusted to a senting, for eachA mean unit density of said iloat
predetermined density relation with- respect to device, a density diil'erential between said iioat
any given liquid' such as to float in said liquid device and said liquid that is less than the density
with a non-liquid displacing portion of said iloat differential between said given liquid and an
device of relatively small but predetermined value other liquid of less density comprising, a con
representing, for each mean unit density of said tainer having a chamber provided with an inlet
iloat device, a density diiïerential between said opening at its lower end for admitting said liquid 55
float device and said liquid that is less than the
density diiïerential between said given liquid and when said iloat is immersed therein, an upstand
ing hollow valve carrying member slidably mount
another liquid of less density comprising, a con
tainer having a chamber provided with an inlet ed in said ñoat, upper and lower needle valves
opening at its lower end for admitting said liquid mounted at the upper and lower ends respectively .
of said member, a connecting passageway between
when said float is immersed therein, an upstand
ing valve carrying member slidably mounted in saidvalve carrying member and said ñoat cham
said float, upper and lower needle valves mounted ber and means carried by said valve carrying,
at the upper and lower ends respectively of said member for obtaining the relation of the float and'
the combined weight of the admitted liquid andI .65
member and means carried by said valve carry
ing member-for obtaining the relation of the said container necessary for said predetermined
float and the combined weight of the admitted density relation, said means comprising a stand
pipe disposed within said valve carrying member
liquid and said container necessary for said pre
having its upper end open to the atmosphere and
determined density relation.
`
70
7. A ñoat device adapted to be adjusted to a its lower end registering with said connecting pas
predetermined density relation with respect to sageway, and means for adjusting said valve car
any given liquid such as to iioat in said liquid rying member and said standpipe in any one of a
with a non-liquid displacing portion of said ñoat number of predetermined positions.
device of relatively small but predetermined value
10. A ñoat device adapted to be adjusted to a
75 representing, for eachmean unit density of said predetermined densityrelation with respect to any
5
2,115,043
given liquid such as to iloat in said liquid with a
non-liquid displacing portion of said float device
of relatively small but predetermined value repre
senting, for each mean unit density of said iloat
device, a density differential between said iloat
device and said liquid that is less than the density
differential between said given liquid and another
liquid of less densityx comprising, a container hav
ing a chamber provided with an inlet opening at
its lower end for admitting said liquid when said
10
iioat is immersed therein and a reference mark at
the upper end, an upstanding hollow valve carry
ing member having a passageway communicating
with said float chamber, upper and lower needle
valves mounted at the upper and lower ends re
spectively of said upstanding member and means
carried by said upstanding member and adjustable
therewith relative to said reference mark for determining the quantity of liquid to be admitted in
20 said chamber for obtaining the relation of the
volume of the float and the combined weight of
the admitted liquid and said container necessary
for said predetermined density relation.
11. A iioat device adapted to be adjusted to a
25 predetermined density relation with respect to
any given liquid such as to float in said liquid with
a non-liquid displacing portion of said ñoat device
of relatively small but predetermined value, repre
senting, for each mean unit density of said ñoat
30 device, a density diiïerential between said ñoat de
vice and said liquid that is less than the density
differential between said given liquid and another
liquid of less density comprising, a container hav
ing a chamber having an inlet oriñce at its lower
end for admitting the liquid when said iloat is im
mersed therein, a reference mark on the exterior
surface of said iioat for indicating the depth ap
proximately to which said i‘ioat device must sink
in said reference medium to be adjusted thereto,
an upstanding hollow valve carrying member slid
ably mounted in said ñoat having a passageway
communicating with said iloat chamber, upper
and lower needle valves mounted at the upper and
lower ends respectively of said upstanding mem
ber, means supported against movement by said
valve carrying member and adjustable therewith
relative to said reference mark and with respectv
to said iloat chamber for measuring the quantity
of admitted reference medium, said means com
prising a standpipe so constructed and arranged
within said valve carrying member to limit the
quantity of liquid admitted to said chamber and
thereby establish the relation between the volume
ci' the iioat and the combined weight of the con
tainer and quantity ofl admitted liquid in deter
mining the mean unit density 0I said iioat device,
and indicia means to indicate when said valve
carrying member and said standpipe have been
positioned to limit the quantity ol.' liquid admitted
to a desired value for adjusting said float device
to any given one of a number oi densities to which
it may be adjusted.
12. A float device adapted to be adjusted to a
predetermined density relation with respect to any
given liquid such as to iioat in said liquid with a
non-liquid displacing portion of said iloat device
oi relatively small but predetermined value repre
senting. i‘or each mean unitdensity of said iloat
device, a density differential between said float
device and said liquid that is less than the density
differential between Said given liquid and an
other liquid of less density comprising a container
having a chamber having an inlet oriñce at its
lower end for admitting the liquid when said iioat
is immersed therein, reference means on the ex
terior surface of said float for indicating the depth
approximately to which said iioat device must
sink in said liquid to be adjusted thereto, and 10
means carried by said ñoat device and adjustable
with respect to said reference means for deter
mining the quantity of admitted liquid for auto
matically obtaining predetermined relation be
tween the volume oi the iloat and said admitted 15
quantity of liquid, the effective cross-sectional
area of said inlet oriilce being suiiiciently large to
permit admission of said liquid in said iioat cham
ber in adjusting said iioat thereto but restricted
in an amount suilicient to prevent drainage of the 20
admitted liquid from said iioat chamber as long
as the head ot the liquid in which said ñoat de
vice is immersed is greater than the head of the
admitted liquid.
’
13. A iloat device adapted to be adjusted to a 25
predetermined density relation with respect to any
given liquid such as to ñoat in said liquid with a
non-liquid displacing portion of said ñoat device
of relatively small but predetermined value repre
senting, for each mean unit density of said ñoat 30
device, a density differential between said float de
vice and said liquid that is less than the density
diil‘erential between said given liquid and another
liquid of less density, comprising a container
having a chamber provided with an inlet opening 35
at its lower end foi-r admitting said liquid when
said iioat is immersed therein, a valve carried by
said container. and means cooperating with said
iioat chamber for automatically determining the
quantity of liquid to be admitted for obtaining the
relation of the volume oi' the ñoat and the com
bined weight o1 the admitted liquid and said con
tainer necessary for said predetermined density
relation.
-
14. A ñoat device adapted to be adjusted to a
predetermined density relation with respect to any
given liquid such as to ñoat in said liquid with a
non-liquid displacing portion ot said float device
of relatively small but predetermined value repre
senting, for each mean unit density oi said ñoat
device, a density diil'erential between said float
device and said liquid that is less than the density
diilerential between said given liquid and another
liquid oi' less density. comprising a container hav
ing a chamber provided with an inlet opening at a.
its lower end for admitting said liquid when said
iloat is immersed therein and means cooperating
with said ñoat chamber for automatically deter;w
mining the quantity of liquid to be admitted for
obtaining the relation oi' the volume of the iioat
and the combined weight oi' the admitted liquid
and said container necessary for said predeter~
mined density relation, the shape of the iioat and
the position of said inlet opening being such that
ior all tilted positions of the iìoat in the given
liquid, the admitted liquid will be coniined with«
in the iioat.
DAVID SAMIRAN.
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