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Патент USA US2128381

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Àug. 30, 1938.
A. F. sPrrzGLAss ET À».
~ 2,128,381
Filed Feb. 5,1956
5 Sheets-SheetI 1
Aug. 30, 1938.
Filed Feb. 5, 1936
3 Sheets-Sheet 2
Ã/Geofge WGrísdaZe
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Aug.j-30, 1938. '
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A. F. jsPlTzGLAss ET A1.
Filed Feb. 5, 1936
s sheets-sheet 5
Patented Aug. 3o, 193s
Albert F. Spitzglass and George W.' Grisdale,
Chicago, Ill., assignors to Republic Flow Meters
Coinpany, Chicago, Ill., a corporation of Illi
Application February 5, 1936, Serial No. 62,420
s claims. (c1. .2t-.256)>
to apparatus
with liquid
and theforlike,
that the measurement is always at the same
agent such as sodium or potassium hydroxide so0 lution.
An object of the invention is to provide an ap-
The above and other objects and features of
the invention, including various novel construc- 10
tions and desirable arrangements, will be appar
perature fluctuations, in which the gas (both before and after treatment by the reagent) is at
room temperature and at atmospheric pressure
so that no correctlons are necessary, and which
preferably has the gas analyzing devices arranged
drawings, in which:
Figures 1 and 2 are vertical sections, at right 15
angles to each other, of a CO2 recorder, with most
of the parts ppearing‘ in elevation;
Figure 3 iS e» Sectional diagram, With the Vari
in a readily removable unit to facihtate cahbra-
011s Darts ShOWn Side by Slde t0 feellltate an 11n
20 tion and repair.
One important feature of the invention relates
derstanding of their co-operative action;
Figure 4 is a partial section showing the pen
25 of heat exchanger submerged in the reagent.
pheric pressure, to a novel sampling device which
is preferably arranged above the reagent, and
which measures off deñnite quantities of the gas
Figures 7 and 8 are sectional views of the one- 25
sitions; and
Figures 9 and 10 are sections on the line 9-9
of Figure 3 showing the gas-measuring means
respectively attached and detached.
30 for treatment by the reagent. This device in itSelf embOdÍeS Substantial HOVelÈY, especially in
the arrangement of a vertically reciprocated contemer WhlCh meeslll‘es Off the ges and WhÍCh ÍS
The instrument illustrated comprises a panel
or complete or partial outer casing I0 supporting
at its upper end avertical motor l2 driving a gear
35 serves the purpose 0f a Simple and effective pump
shown with ñller means I5 for nlling with oil 35
irltO and through the reagent, Which eCÉS 0n them
to absorb the CO2 Content The gas-measuring
carried by
a novelvalve
head means
40 is
providedis with
t0 Contr01 the 50W 0f the gas-
45 in the reagent, and W‘hiCll delivers gesfat etmOS-
device i4 drives an operating shaft I6 having
at one end an arm I8 connected by a vertical
link 20 t0 a gas-measuring device hereinafter 40
The other end of the shaft I6 carries a double
operate a seal for the discharge of the final gas 45
50 after treatment by the hydroxide bath or other
unit I4.
Its lower end is operated, as hereinafter 50
telescopically within the lower end of the tube 68.
The tube 84 is substantially smaller in diameter
gear pump 34 (Figure 3) in an auxiliary casing
36 (Figure l) which acts to draw ñue gases, or
other gases to be analyzed, through a conduit 38
than the tube 68, and oí course is also consider
ably smaller in diameter than the opening in the
bottom of the container 18.
The head 14 also has sealed thereto at its up
per end a vertical tube 86, enough smaller in
diameter than the vtube 60 to provide a substantial
(having a glass vessel 40 partly ñlled with water,
to give a visual indication, if desired) from any
desired source of such gases. Condensed mois
ture drips down into and overflows from, a pipe
4| bent to provide a seal or trap at its lower end. clearance therebetween, and which projects into
and forms in eiîect a telescoping connection
The gases pass from the pump into the upper
a drain plug 1 therewith. The clearance insures that the reser
part of a container’42
to a. predetermined level withVA - Voir 56 is always at atmospheric pressure.
44, which is filled
The tube 86 opens at its upper end into a pas
Passages 46 and 48 may be provided into the ` sage '88 having as a continuation thereof a verti
container 42, also, from the conduit 38Hand the 'cal open tube- 96 (Figures 7 and 8) surrounded by
neutral point of the
a well of mercury 92. The well of mercury 92 is
a space which communicates with the passage 16,
opening below the normal level of the oil in con
tainer 42. This serves to circulate oil through the
pump, to seal it. The container 42 may have suit
and it contains a one-way valve in the form of a
very lightcup-shaped member 94, inverted over
the end ofïthe tube 96, and guided by means such
able ñller means 50.
The gases next pass through a conduit 52"and,-- as pins 96 so thatits lower edge can dip into the
When the member 94 is in the position of Fig
tion, pass through a heat exchange device (illus
20 according to an important feature ofthe inven
mercury 92.
. When themember 94 is in the posi
As explained below, in analyzing~ flue' gases
CO2 content, this reagent would be a solution of
caustic potash or soda. The amount of this re
agent and the size of the container or reservoir
ping into the mercury 92, communication between
passages 88 and 16 is cut oiî. As passage 88 is al
ways at atmospheric pressure, and as member 94 if
is very light, a` slight suction in passage 16 is suffi
cient to open the valve.
Also, to insure »a minimum of reaction of the
58 are such that heat is dissipated into the room
a fast as it is aborbed from the yflue gases, thus
reducing the gases substantially to room tempera
gases on the mercury 92, as shown best in Figure
8, the member 94 is very slightly larger than tube
90, and has a considerable area subject to suction
in passage 16, so that while there is a considerable
height of mercury sealing the valve whenclosed,
as inl FigureV 8, the-valve nevertheless»v opensA so
quickly that there is substantially no tendency` for
the gas tobubble through the mercury.
The coil 54 opens at its end into a vertical tube
69 substantially at its center. The lower end of
35 the tube 66 passes through and is sealed to the
bottom of the reservoir 58, and opens outside' the
reservoir, to discharge excess flue gases from the
instrument, and to insure that gases withdrawn
for analysis are at atmospheric pressure. The
upper end of the tube 60 opens above the level of
the reagent 56, and maintains the interior of the
reservoir 58 at atmospheric pressure.
tion of Figures 3 «and 8, with its lower edgedip
reservoir 58.
88 to the~ passage 16„without passing through the
conduit) submerged in a liquid reagent 56 in a
ture at all times.
ures 5, 6, and '1, the gas passes freely from passage 25
trated as a coil 54 forming a continuationvofV the
n Assuming a point in the cycle illustrated in Fig
ure 3, with the container 18 full of mercury'and
rod 28 reciprocates upwardly ,
valve 94 closed, the
_ -
Mounted on the lower end of the reciprocating as illustratedin Figure 5, causing a reduced pres- . ì
sure in the container 18 as the mercury runs-out
connecting rod 20 is a pivot 62 (Figures 9 andl 10)
adapted to seat in a bearing opening 64 formed 'in of it, opening valve 94 as shown in detail vin-Fig
a cast part 66 brazed or soldered to the upper end ure ‘7, and drawing inV a predeterminedl amount
of gas from the tube 69. VIt is important to note
of a hollow vertical tube 68 sliding in an opening
in the top of the reservoir 58. The part 66 is that by our novel arrangement of the parts de
formed with a passage 10 which is normally scribed above,»this gas is at roomA temperature
and at atmospheric- pressure, and therefore for
50 closed by a screw 12 which locks the pivot in place.
all practical purposes the chargefis always not
Thus detaching the tube 68 from the rod 20 in
merely the same volume but that thisrvolume is
volves removing screw 12 which, as shown in-Fig
ure 10, automatically insures that at that time not subject to substantial variations due to tem- . »
perature and rpressure diiîerences.
the interior of the tube 68 is at atmospheric pres
Figure 6 shows the end ofA the upward stroke,
55 sure, and there is no danger of suckingany of
the reagent 56 up into the tube.
The tube 68 is sealed into a novel head\14, of
non-corrosive material such as one of the syn-r
thetic resins, with an opening in its side in registry
60 with a passage 16 formed in the head... The
lower end of the tube 68 opens into, and is sealed
to the upper end oi, an open-bottom container
18, of synthetic resin or the like.
. .
The container 18 which forms the measuring
65 chamber oí the sampling device dips into, and at
all times has its lower end sealed by, a body of
mercury 89 contained in a vessel y82 which is
mostly submerged in the reagent 56 to keep the
mercury cool, but which of course opens well
70 above the level of the reagent. - The vessel 82 _is
supported by having one side extended upwardly
and secured to the top of the reservoir 58.;
A vertical tube 84 is sealed into the bottom of
the vessel 82, and is arranged at its? upper' end
with a full charge `of gas measured off. On the
down stroke the valve` 94 closes the instant the
pressure'in passage 16 rises to atmospheric prese
sure, i. e. practically Iinstantly at the end of the
stroke, and thev mercury 89 forces the measured
charge of gas out through >the bottom of tube 6ft.
Tube 84 exhausts the gas, past a'weighted- lever
98 forming in effect a one-way valve, into the esv
lower end of~ an upwardly-inclined tube m9,
shown as square in cross-section. rThe part of the
lever 98 which normally closes the lower end oi
the tube 84 is 1 provided with a relatively small
opening which cooperates with the edge to break 7,0
the stream oi gas up into'a large number of small
bubbles, to give a large surface acted on by the
The gas passes up the ‘tube
charged into-the lower end oi averti‘cal tube 102,
opening at its lower end in the reagent 56 and
having its closed upper end well above the level
of the reagent 56.
|02 is shown square
ways filled to the same level, regardless of varia
tions in the level of the reagent 56.
'I‘he lowering of the cup |44 unseals
square tube |02 of course contain reagent, which
acts to absorb the CO2, so that the gas passing
into the tube |04 is the measured quantity of flue
10 gas, minus its CO2 content.
pipe 6U and through any clearances that may ex
ist where parts 52, 68, 28, and H0 pass through 10
the top of the reservoir.
around the round tube |04. and allows it to dis
15 charge at the lower end of the tube |22. Thus the
tube |09 and the tube |02 in eiTect form a tubular
system immersed in the reagent and through
Before the next charge
of gas is emptied into
the cup |44 is again lifted to seal
|44 is always
ñlled to the same level, any back pressure on the
bell |58 is always the same, and can be calibrated
above the reservoir. The position of
the head |14 is thus dependent. at the end of
each cycle when the residual gas is in the bell Hi8.
the proportion of CO2 to unabsorbed residual
At this point in the cycle, cam lever 22 rocks the
lever 30 to r ease (against the resistance of‘a
convenience of repair and
In operation, the instrument follows a regular
in bell |08, as the case may be, to give the pen |22
the proper new setting.
pen |22 cooperates with a chart |28 (Fiere
ure 2) driven by a clock mechanism |30, and
to the face of the panel ||J.
It will be noted from Figure 4 that rib 32 and
appended claims.
We claim:
in the arm
U8. As soon as the pin |22 takes up its new ‘oo
sition. as described above, the further movement
1. An instrument comprising a source of sup
ply- of gas,
for a liquid reagent, a
ofthe cam arm 22 permits spring H5 to clamp
the arm ||8 (and therefore the pen |22) in the
new position until the next cycle.
In order that variations'in the level of the re
agent 5S may notI aiîect the positioning of the bell
After the pen |22 is clamped in its new position,
further rotation of the shaft |6 rocks the arm 24
to lower the connecting rod 28. On the lower end
through the bottom of the vessel and joined to
said bottom by a mercury-tight joint, and a ver
tically reciprocating head including a depending
open-bottom gas container with its top` provided
with means forming a telescoping joint with the 70
upper portion of said vertically-extending tube,
said telescoping joint having a substantial clear
and out of said
container around said tube, said head having one
of mercury surrounding its base, together with a
way gas-controlling valve means so that gas is
drawn into the container past the valve means
when the head is lifted to withdraw the container
from the mercury and is forced by the mercury
from the container down through said tube when
the container is forced downwardly into the mer
cup-shaped member inverted over said tube with
3. A gas analyzer comprising a reservoir con
taining a liquid reagent, a stationary vessel open
at its top and containing mercury and which is
mainly submerged 1n the reagent to cool the mer
cury but the open top of which is above the sur
face of the reagent and which has a tube extend-
the lower edge of its wall dipping into the mer
cury in said well.
5. Gas treating apparatus comprising a reser
voir containing liquid, a liquid containing well in
the reservoir, a gas-measuring bell dipping into
the liquid in the well, sampling means for periodi
cally discharging into said bell quantities of gas to 10
be measured, exhaust means for the gas having
an inlet tube projecting upwardly into said bell
and opening therein 'above the level of the liquid
in the well and having an outlet tube with its end
ing vertically through the mercury and through
the bottom of the vessel and joined tol said bottom
by a mercury-tight joint and which opens at its
lower end in said reagent, a vertically reciprocat
ing head including a depending open-bottom gas
container with its top provided with means form
ing a telescoping joint with the upper portion of
said vertically-extending tube, said telescoping
joint having a substantial clearance so- that gas
may pass into and out of said container around
said tube, said head having one-way gas-con
trolling valve means so that gas is drawn into the
container past the valve means when the head is
lifted to withdraw the container from the mer
cury and is forced by the mercury from the con
tainer down through said tube when the container
is forced downwardly into the mercury, anup
wardly inclined guide submerged in and filled by
the reagent and into the lower end of which the
bottom of said tube opens, and a device receiving
the treated gas from the upper end of said guide
and determining a characteristic thereof.
4. A gas measuring device for use in an instru
ment comprising a reciprocable head having de
pending therefrom a gas intake tube and an open
bottomed gas measuring container, and having a
passage leading from the tube to the interior of
40 the container and which is provided with a one
way valve controlling said passage, said valve in
cluding an upwardly opening tube having a well
facing downwardly above the level of the liquid 15
in the reservoir, a vertically reciprocated cup and
means operated synchronously with the sampling
means to lower the cup into the liquid in the
reservoir to be filled thereby to a predetermined
level and at the same time to leave said down
wardly facing end of the outlet tube unobstructed
while exhausting gas which has been measured
and to be raised to seal said end in the liquid in
the cup while supplying the said gas to be meas
ured, said sealing liquid always rising to the same 25
level in said tube.
6. Gas analyzing apparatus comprising a reser
voir containinga reagent, an upwardly sloping
tube immersed in and filled by said reagent, an
upright tube connected to the upper end of the 30
sloping tube and having its lower end terminating
below thereagent level and its upper end above
the reagent level, sampling means to discharge a
measured quantity of gas to be analyzed into said
sloping tube adjacent the lower end thereof so 35
that gas rising through the sloping tube into the
upper part of the upright tube causes circulation
of reagent from the reservoir through the slop
ing tube and back to the reservoir through the
lower end of the upright tube and means con
nected to the upper end of the upright tube to 40
measure the gas rising therethrough.
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