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Патент USA US3031900

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May 1, 1962
3,031,890
c. R. STRUCK
FLUID SAMPLING DEVICE
'3 Sheets-Sheet 1
Filed Nov. 25, 1960
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Cannes R. STRUCK
M
Arm
May 1, 1962
c. R. STRUCK
3,031,890
FLUID SAMPLING DEVICE
Filed Nov. 25, 1960
5 Sheets-Sheet 2
INvaN'roR
CHARLES R. Srnuuq
.
M
I M
ATTY-v
May 1, 1962
c. R. STRUCK
3,031,890
FLUID SAMPLING DEVICE
Filed Nov. 25, 1960
3 Sheets-Sheet 3
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28 INVENTOR
37‘ Camus kjmuck
by? W
Arrv.
taes
"me
3,031,890
8 Claims. (Cl. 73-422)
The present invention relates to ?uid sampling devices
Patented May 1, 1962
2
1
FLUID SAMI’LING DEVICE
Charles R. Struck, 125 Arboleda Road,
Santa Barbara, Calif.
Filed Nov. 25, 1960, Ser. No. 71,519
3,931,890
there has been substituted for such drive a positive moti
vation of the sleeve associated with the carrier, such
motivation in the illustrated form of the invention op
erating under the control of an electric motor.
Still another feature of the present invention which
serves to distinguish it from my prior ?uid sampling de
vice resides in the provision of a more positive means
for controlling the movements of the ?uid-ejecting
for separating'small representative quantities or samples
plunger, this means assuming the form of a cam which
of a ?uid from a flow line of such ?uid. The invention 10 exerts a positive action upon the plunger to restore it to
has particular reference to ?uid sampling devices‘ of the
type shown and described in my prior United States
Patent No. 2,784,594, granted on March 12, 1957, and
entitled “Fluid Sampling Device,” over which device the
present one is an improvement.
Brie?y, the ?uid sampling device of my prior patent
is in the form of a self-contained unit adapted to be inter
posed in a ?uid line as, for example, a sectional ?uid
conduit, and having associated therewith a ?uid chamber
its retracted position rather than relying upon yieldable
spring means for effecting this function.
Yet another feature of the invention, in an apparatus
of this sort, is to provide a novel means for effecting a
15 scavenging action of the sample containing ?uid chamber
after each ?uid sample has been expelled from the latter.
The provision of a ?uid sampling device which is rela
tively simple in its construction, and which, therefore,
may be manufactured at a relatively low cost; one which
The 20 is comprised of a minimum number of parts, particularly
moving parts, and which, therefore, is unlikely to get out
sleeve assembly, the plunger and sleeve thereof having
of order; one which is rugged and durable and which,
associated therewith cooperating porting by means of
therefore, will effectively serve its intended purpose over
a long period of time Without requiring servicing; one in
which ?uid is intermittently introduced into the ?uid
chamber for immediate and subsequent discharge there 25 which the operative moving parts thereof have extremely
from by an operative stroke of the plunger. The carrier , low torque requirements; one which will operate to en
train for discharge purposes a relatively large number
is rotatable within the sleeve to effect proper timing of
within which an operating plunger reciprocates.
?uid chamber exists by virtue of a rotatable carrier and
the porting arrangement, as well as to effect proper tim
ing of the plunger stroke, the latter being effected by
of ?uid samplings over a given period of time; one which
will withdraw the samples from a region of an average
?uid pressure operating upon one end of the plunger. 30 consistency; one which will deliver the entire portion of
each ?uid sample to the ?uid receptacle; one which will
effect such delivery of the samples to the receptacle im
tion under the in?uence of a spring. Rotation of the
mediately after their entrainment; one in which the ac
carrier in the stationary sleeve, serves, through the coop
The plunger is yieldingly maintained in its retracted posi
erating porting, to control the intermittent admission of
?uid to the chamber and also to control the proper ap
plication of ?uid pressure selectively to the opposite ends
of the plunger to control the movements of the latter in
timed relation to the introduction of ?uid to the chamber.
The carrier is adapted to be continuously rotated under
the motivating in?uence of ?uid passing through the ?uid
line, a turbine action utilizing turbine vanes on the car—
rier being employed for this purpose.
Fluid sampling devices constructed in accordance with
the principles brie?y outlined above, as exempli?ed by
cumulation of ?uid in the sample lines is avoided; one
35 which is smooth and silent in its operation; and one
which, otherwise, is a well-adapted to perform the serv
ices required of it, are further desirable features which
have been borne in mind in the production and develop
ment of the present invention.
Numerous other objects and advantages of the inven
tion, not at this time enumerated, will become more
readily apparent as the following description ensues.
In the accompanying three sheets of drawings forming
a part of this speci?cation, one illustrative embodiment
my prior patent above referred to, are possessed of cer 45 of the invention has been shown.
tain limitations, principal among which is the fact that
In these drawings:
rotation of the carrier is dependent upon the rate of ?ow
of ?uid through the ?uid line. Where low pressures,
and consequently low rates of ?ow of the ?uid are in
FIG. 1 is a side elevational view of a ?uid samplin
‘
device constructed in accordance with the principles of
the present invention and showing the same operatively
volved, insufficient pressure on the turbine vanes may 50 installed in a ?uid line;
FIG. 2 is an enlarged sectional view taken substan
cause stalling of the turbine mechanism. Such a condi
tially vertically and centrally through the ?uid sampling
tion is apt to be prevalent under conditions of high ?uid
device of FIG. 1;
viscosity, high ?uid density, low temperatures, the pres
FIG. 3 is an exploded perspective viewshowing the
ence of solid material in the ?uid, and other factors.
component parts of the ?uid sampling device and illus
Furthermore, conditions involving the above mentioned
trating their positional relationship relative to one another;
factors, as well as surface tension, adhesive qualities of
FIG. 4 is a fragmentary sectional view taken substan
the ?uid, and other factors, may cause erratic operation
tially along the line 4—4 of FIG. 2;
of the carrier.
The present invention is designed to overcome the
FIG. 5 is a sectional view taken substantially along
above-noted limitations that are attendant upon my prior 60 the line 5-5 of FIG. 4;
FIG. 6 is a sectional view similar to FIG. 4 with the
?uid sampling device and, toward this end, the present
invention contemplates the provision of a ?uid sampling
various parts in the positions they assume at the end of
the ?rst-quarter cycle of the operation of the apparatus;
device which, in the main, operates upon the same gen
eral principles as that of my prior device, but in which
FIG. 7 is a sectional view taken substantially along the
the sleeve, instead of the carrier, is rotated to effect the 65 line 7—7 of FIG. 6;
necessary relative movement between the sleeve and car
rier. By thus rotating the sleeve instead of the carrier,
a very material simpli?cation in the structure involving
an appreciable reduction in the number of moving parts
FIG. 8 is a sectional view similar to FIG. 4 showing
the parts in the positions which they assume at the end
of one-half cycle of the operation of the apparatus;
FIG. 9 is a sectional view taken substantially along
involved, is attained. Another and equally important 70 the line 9--9 of FIG. 8;
'
’
feature of the present invention resides in the elimination
FIG. 10 is a sectional view similar to FIG. 4 showing
of a turbine drive. According to- the present invention,
the parts in the positions which they assume at the end
3,031,890
3
.
4
of the third-quarter cycle of operation of the apparatus;
medial region of the drive shaft 62. A plurality of ports
and
FIG. 11 is a sectional view taken substantially along
the line 11-11 of FIG. 10.
78 are formed in the wall of the drive shaft in communi
cation with the interior of the delivery tube 74.
Still referring to FIGS. 2 and 3, the tubular cage mem
ber 46 is formed with a pair of upper and lower diametri
Referring now to the drawings in detail and in par
ticular ‘to FIG. 1, the invention has been shown in an
cally opposed slots 30 and 82, respectively, which per
mit free ?ow of ?uid around the member 64. A cup~
shaped liner 90 which may be formed of a suitable plastic
stream passing through a ?uid ‘line including pipe sec
material is disposed within the sleeve proper 64 with a
tions 10 and 12. The ?uid sampling device has been
designated in its entirety at 14 and it includes an outer 10 tight ?t, is rotatable in unison with the sleeve 64 and is
provided with a relatively thin, cylindrical wall portion 92
casing 16 having an inlet leg 18 operatively connected to
environment wherein the same is interposed in a ?uid
and a relatively thick radial end wall 94. The cylindrical
the pipe section 10 and an outlet leg 20 operatively con
wall portion 92 is provided with a pair of holes 96 and
nected to the pipe section 12. Fluid is adapted to be
98 therein in permanent register with the ports 84 and 86,
by-passed around the ?uid sampling device 14 through a
sectional branch conduit 22 having a manually-controlled 15 respectively, these holes serving merely as extensions of
the ports.
valve 24 interposed therein. A pair of shut-off valves
‘A ?oating carrier 100, including an enlarged cylindrical
26 and 28 are disposed in the conduit sections 10 and 12,
body portion 102 and a reduced stern portion 104, is slid
respectively, on opposite sides of the device 14 so that
when these two latter valves are closed and the valve 24
ably disposed Within the liner 90 and is normally urged
rearwardly within the latter by means of a helical coil
spring 106 which bears at its forward end against a snap
10 to the pipe section 12. When the valve 24 is closed
ring 168 carried near the forward open end of the cage
‘ and the valves 26 and 28 are opened, ?uid will pass
member 46, and at its other end against a forwardly fac
through the ?uid sampling device 14.
ing shoulder 110 provided on the carrier. The body por
A bracket assembly 30 is operatively mounted on the
pipe section 12 and serves to support thereon a receptacle 25 tion 162 is provided with a frusto-conical face 112 de—
signed for yielding engagement with a complementary
32 in which relatively small samples of ?uid withdrawn
frusto-conical face 114 provided on the thickened wall
from the casing 16 in a manner that will be made clear
portion 92 of the liner 90, these two frusto-conical sur
presently are collected. The bracket assembly 30 also
faces being maintained in yielding contact by means of
serves to support an electric motor M by means of which
I
the operative parts of the ?uid sampling device 14 are 30 the spring 166.
is opened, ?uid will pass directly from the pipe section
positively driven.
The carrier 100 is held against rotation within the
liner 90 by means of a pin 116 which projects through a
narrow extension 11% of the upper slot 80 provided in
the cage member 46 and which extends into the body
and outlet legs 18 and 20 and a third leg 34, this latter
leg being threaded interiorly as at 36 for threaded re 35 portion 102 of the carrier 100.
The body portion 102 of the carrier 164i is formed with
ception therein of a bushing 40. The bushing 40 is gen
‘an elongated vertical slot 120 therethrough. The sleeve
erally'of cup-shaped design and is provided with an end
64 is ‘rotatably disposed within the annulus existing be
wall 42 having an opening 44 through which there pro
tween the carrier and the cage member. The two ports
jects one end of a nonrotatable cage member 46. The
cage member 46 is generally of tubular design and it is 40 84 and 86 provided in the sleeve upon rotation of the
latter serve to effect intermittent admission of small
provided with an end ?ange 48. A resilient O-ring St}
quantities of ?uid passing through the casing 16 to the
is interposed between the end ?ange 48 and end wall 42
interior of the slot 1211, as Well as to effect an automatic
of the bushing 40, while 2a follower 52, which is tele
cut-off whereby such ?uid as has entered the slot 120
scopically received within the bushing 40 and which is
adapted to be clamped thereto by means of a series of 45 will be entrapped therein for subsequent expulsion there
from under the motivating in?uence of a plunger 122,
clamping bolts 54, bears against the ?anged end of the
which is slidably disposed within the slot, and the move
cage 46 and serves to compress the O-ring against the
ments of which are controlled by mechanism subse
end wall 42 to thus effect a ?uid seal between the parts.
Referring now to FIGS. 2 and 3, the casing 16 per se
is in the form of a T having the aforementioned inlet
The’cage member 46 projects through the opening 44
quently to be described.
The liner 90 is provided with a longitudinally extend
and extends axially across the casing 16 to a region ad~ 60
ing port 124, this port being disposed in the peripheral
jacent the forward end thereof so that it is thus positioned
regions of the liner end wall 94. A cooperating port
directly in the ?uid stream passing through the casing 16
126 provided in the rear end of the carrier repeatedly
from the inlet leg 18 to the outletleg 20 thereof. The
communicates in passing with the upper portion of the
tubular cage member is formed with an internal annular
?ange 56 ‘which, in combination with a packing nut 58, 55 slot 120 during rotation of the sleeve 64 and its liner 9!)‘.
The plunger 122 is in the ‘form of a ?at, generally
de?nes a packing gland within which there is contained
rectangular, block-like body having oppositely facing
a quantity of a suitable packing material 60*. An elon
lateral extensions ‘or ?ngers 128 at the forward end there
gated tubular drive shaft 62 having a bore 63 therein
of. The transverse cross-sectional area of the plunger
projects through the packing gland, and the forward end
of the drive shaft has integrally formed thereon a com 60 122 is substantially equal to the transverse cross sectional
area of the slot 121} so that the plunger may operate in
posite sleeve member including a sleeve proper 64, the
the manner of a piston within the slot and be impelled
nature and function of which will be made clear presently.
rearwardly in therslot under the motivating in?uence of
The sleeve proper 64 is loosely disposed and it rotates
?uid admitted under pressure to the forward end of the
within;t_he cage member 46. A washer 65 is interposed
65 slot to drive the plungerrearwardly within the latter.
between the rear end of the sleeve and the ?ange 56.
wAs bestseern innFlG._3, the rear rim of the sleeve 64 is
The drive shaft 62 projects through a delivery ?tting
shaped to provide a pair of jcam edges 130, including drop
66 and has its rear end operatively connected by means
' off portions 132, these cam edges being designed for cam
of a coupling 68 to the drive shaft 70 of the electric
ming engagement with the protuberances 128 for the
motor ,M.
The delivery ?tting 66 includes an upper horizontal 70 purpose of returning the plunger 122 to its retracted posi
tion after each forward ?uid-discharging stroke thereof.
sleeve portion 72 and a lower vertical delivery tube
The
operative stroke of the plunger 122 is effected under
proper 74, the lower end of the latter communicating
the motivating in?uence of ?uid pressure acting upon the
with the interior of the receptacle 32. .A pair of bear
forward end face 134 of the plunger. This forward
ing assemblies 76 associated with the sleeve portion 72
of the delivery ?tting 66 serves rotatably to support the 75 end face of the plunger 122 is of an obtuse angular con
3,031,890‘
.
5
_
6
?guration to provide clearance regions so that ?uid may
enter between the end face of the plunger and the adja
cent vertical end wall of the slot 120 preparatory to the
two ports 124 and 126 will remain out of register with
each other as shown in FIG. 10, while at the same time
communication of the ports 84 and 86 with the slot 120
operative stroke of the plunger.
will be effectively prevented by an imperforate portion
-
of the sleeve 64. The ?uid entrapped within the slot
In the operation of the device, when the same is opera
120 remains within the slot until the cycle has been com
tively installed in a ?uid pressure line, as illustrated in
pleted and the sleeve 64 has beenrotated throughout 360°
FIG. 1, with the valve 24 closed and the two valves 26
so that the parts again assume the position shown in FIGS.
and 28 open, a substantially steady stream of ?uid will
4 and 5. At this time, the entrapped ?uid within the
?ow from the pipe section 10 through the casing 16 to the
pipe section 12. Assuming the motor M to be ener 10v slot 120 will be replaced by a fresh sample of ?uid in
the manner previously described and the cycle will be re
gized, the sleeve 64 which is carried at the forward end
peated.
of the rotating drive shaft 62 will be caused to rotate
From the above description, it is throught that the
Within the annulus existing between the cage member 46
construction, operation and many ‘advantages of the here
and the body portion 102 of the carrier 100. Assum
ing that, at the commencement of each sampling cycle, 15 in described ?uid sampling device will be readily apparent.
The invention is not to be limited to the exact arrange
the ‘diametrically opposed ports 84 and 86 in the Sleeve
ment of parts shown in the accompanying drawings or
64 are in register with the elongated slots '80 and 82,
‘described in this speci?cation as various changes in the
respectively, in the cage member 46, ?uid will pass
details of construction may be resorted to without depart
through these registering slots and ports and ?ll the ver
ing from the spirit of the invention. Only insofar as the
tically disposed slot 120 provided in the body portion
invention has particularly been pointed out in the accom
102 of the carrier 10%}. '
panying claims is the same to be limited.
At this time, the two lateral extensions or ?ngers 128
Having thus described the invention What I claim as
provided on the plunger 122 will bear against the high
new ‘and desire to secure by Letters Patent is:
‘portions of the cam edges 130‘ provided on the rear
l. A sampling device for ?uid under pressure in a ?ow
rim of the sleeve 64 so that the plunger will be held in 25
line, comprising: ‘a casing provided with a ?uid inlet and
its retracted position, such a position of the parts being
a ?uid outlet, a generally cylindrical cage member non
illustrated in FIGS. 4 and 5. Also, at this time, the longi
rotatively mounted with the casing and projecting into
tudinally extending port 124 provided in the thickened
said ?ow line, a sleeve member mounted for rotation
end wall 94 of the liner 90 will be'out of register with
the longitudinally‘extending port 126 formed in the rear 30 and ?tting within said cage member, a hollow rotatable
drive shaft through which samples of ?uid are adapted
region of the carrier 100. Upon continued rotation of
to be expelled ?rom the casing projecting into said casing
the sleeve 64 in the direction indicated by the arrow in
and connected to said sleeve member in driving relation
FIG. 4,.‘the ports 84 and 86 in the sleeve 64 will move
out of register with the vertical slot 120 in-rthe carrier
ship, a carrier ?tting within said sleeve member and pro
1% so that an imperforate portion of the sleeve 64 will 35 vided with a chamber therein, interengaging means on the
close the upper and lower ends of this latter slot 120
cage member and carrier for preventing rotation of the
and entrap'a quantity of the ?uid within the slot.
latter, means controlled by rotation of the sleeve member
After the sleeve has rotated throughout an angle of
for conducting ?uid from the chamber to the hollow
90° in the direction indicated by the arrow in FIG. 4,
drive shaft, the carrier and sleeve member being provided
thus completing the ?rst-quarter cycle of the operation 40 with coacting means responsive .to the rotation of the
of the apparatus, the port 126 in the carrier 100 will
sleeve member for ‘successively admitting samples of
move into register with the port 124 in the end wall 92‘
?uid into the chamber and trapping the same in the lat
of the liner 90 as shown in FIGS. 6 and 7, thus estab
ter, a plunger slidable in the carrier for expelling the
lishing communication through these two registering ports
trapped samples from the chamber into the hollow drive
between the bore 63 of the drive shaft and the vertical
shaft, and means for imparting expelling strokes to the
slot 120 of the carrier 100. Immediately prior to move 45 plunger.
.
ment of the sleeve 64 to its quarter-cycle position, the
2. A'sampling device for ?uid under pressure in a ?ow
two ?ngers 128 on the plunger 122 encounter the drop
line, comprising: a casing provided with a ?uid inlet and
o? portions 132 of ‘the cam edges 139, whereupon ?uid
a ?uid outlet, a generally cylindrical cage member non;
pressure exerted upon the obtuse end face 134 of the
rotatively mounted within the casing and projecting into.
plunger 122 will drive the plunger rearwardly within the 50 the ?ow line, a sleeve member mounted for rotation and.
slot 120 and cause the ?uid entrapped in the latter to
?tting within said cage member, said sleeve memberbeing
be expelled through the two registering ports 126 and
provided with diametrically opposed ports, a hollow ro-v
124. This expelled ?uid will enter the elongated central
tatable drive shaft through which samples of ?uid are
bore or passage 63 provided in the drive shaft 62 and
adapted to be expelled from the casing projecting into
from thence it will pass along the bore 63, through the 55 the casing and connected to said sleeve member in driv
ports or holes 78, and through the vertical discharge
ing relationship, a carrier ?tting within said sleeve mem
tube 74 from whence it will enter the receptacle 32.
ber and having a diametrically extending slot therein,
As the sleeve 64 continues to rotate, the ports 84 and
interengaging means on the cage member and carrier for
86 will remainout of register with the vertical slot 120 in
preventing rotation of the latter, means controlled by the
the carrier 16%) so that the vertical slot 120 remains out 60 sleeve member for conducting ?uid from the chamber to
of ?uid contact with the surrounding ?uid in the casing
the hollow drive shaft, the carrier having means coacting
16.‘ As the- sleeve 64 approaches its 180” position at the
with said ports and responsive to the rotation of the,
half-cycle of the-operation of the device, the. slots 84
and 86 will again move into vertical register with the
sleeve member for successively admitting samples of ?uid
slot 120 in the carrier 100 as shown in FIGS. 8 and 9
and thus cause this latter slot to become scavenged by
passage of ?uidfrom the upstream side of the ?uid stream
65 plunger ?tting in the chamber in the carrier, and means
directly through the port 86in the sleeve 64, slot 120
in the carrier 160, port 84 in the sleeve 64, in the order
named and in straight-line fashion.
4
-
Continued rotation of the sleeve 64 will cause the ports
84 and 86 to move out of register with the slot 120, thus
entrapping a quantity of ?uid in this latter slot. In the
into the chamber and trapping the same in the latter, a
operable by ?uid pressure for imparting expelling strokes
to the plunger.
i,;
.7 3. A sampling device for ?uid under pressure in a ?ow
» line, comprising: a generally cylindrical cage member
'70 nonrotatively mounted within the casing and projecting
into the flow line, a sleeve member mounted for rotation
and ?tting within said cage member, said sleeve member
being provided with diametrically opposed ports, a hol
low rotatable drive shaft through which samples of ?uid
sleeve 64 has been rotated about an angle of 270°, the 75 are adapted to be expelled from the casing projecting
three-quarter cycle position of the parts wherein the
3,031,890‘
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into the casing and connected to the sleeve ‘member in
driving relationship, a carrier ?tting within said sleeve
member and having a diametrically extending slot there
8
adapted to be expelled from the casing projecting into
the casing and connected to the sleeve member in driving
relationship, a carrier ?tting within said sleeve member
in, interengaging means on the cage member and carrier
and having a diametrically extending slot therein, inter
for preventing'rotation of the latter, means controlled
- engaging means on the cage member and carrier for pre-‘
venting rotation of the latter, means de?ning a diametri
by the sleeve member for conducting ?uid from the
cally extending slot in the carrier, the ends of which are
chamber to the hollow drive shaft, ‘the carrier having
movable into register with the ports in the sleeve member
means coacting with said ports and responsive to the
during each 180° rotation of the sleeve member, said
rotation of the sleeve member for successively'admi-tting
samples of ?uid into the chamber and trapping the same 10 sleeve member being provided with a longitudinally ex
tending port for establishing communication between the
in ‘the latter, a plunger ?tting in the chamber in the car
hollow drive shaft and the interior of the sleeve member,
rier for expelling samples from the chamber into the hol
said carrier being provided with a cooperating longitudinal
low drive shaft, ?uid pressure means for imparting ex
ly extending port designed for registry with said longitudi
pelling strokes to the plunger, \and interengaging cam
means on said sleeve member and plunger for retracting 15 nally extending port in the sleeve member and, when in
the latter.
-
4. 1A sampling device for ?uid under pressure in a ?ow
such registry, establishing communication between said
slot and the hollow drive shaft, said longitudinally ex
line, comprising: a generally cylindrical cage member
nonrotatively mounted within the casing and projecting
tending ports being designed for registry with each other
and ?tting within said cage member, said sleeve member
register with the cooperating ports in the sleeve member,
a plunger reciprocable in said slot for expelling samples
from the slot through said longitudinally extending ports
during each 360° rotation of the sleeve member and at a
into the ?ow line, a sleeve member mounted for rotation 20 time when said ends of the slot in the carrier are out of
being provided with diametrically opposed ports, a hol
low rotatable drive sha?t through which samples of ?uid
are adapted to be expelled from the casing projecting
to the hollow drive shaft, and means for imparting ex
into the casing and connected to the sleeve member in 25 pelling strokes tothe plunger.
7. A sampling device for ?uid under pressure in a flow
driving relationship, a carrier ?tting within said sleeve
member and having a diametrically extending slot therein,
interengaginig means on the cage member and carrier for
line, comprising: a generally cylindrical cage member
nonrotatively mounted within the casing and projecting
into the flow, line, a sleeve member mounted for rotation
preventing rotation of ‘the latter, mean-s controlled by the
sleeve member for conducting ?uid from the chamber to 30 and ?tting Within said cage member, said sleeve member
being provided with diametrically opposed ports, a hollow
the hollow drive shaft, [the carrier having means coacting
rotatable drive shaft through which samples of ?uid are
with said ports and responsive to the rotation of the
adapted to be expelled from the casing projecting into the
sleeve member for successively admitting samples of
casing and connected to the sleeve member in driving rela
?uid into ‘the chamber and trapping the same in the latter,
a plunger ?tting in the chamber in the carrier for expel 35 tionship, a carrier ?tting within said sleeve member and
having a diametrically extending slot therein, interengag
ling samples from the chamber into the hollow drive
ing means on the cage member and carrier for’preventing
shaft,‘?uid pressure means for imparting expelling strokes
rotation of the latter, means de?ning a diametrically ex
to the plunger, interengagin'g cam means on said sleeve
tending slot in‘the carrier, the ends of which are movable
member and plunger for retracting the latter, ‘and means
into register with the ports in the sleeve member during
controlled by the sleeve member and operable after each
each 180” rotation of the sleeve member, said sleeve mem
expelling stroke of the plunger for passing a quantity of
‘her being provided with a longitudinally extending port
?uid completely through the chamber toscavenge the
for establishing communication between the hollow drive
latter.
I
shaft and the interior of the sleeve member, said carrier
5. A sampling device for ?uid under pressure in a ?ow
eing provided with a cooperating longitudinally extend
line, comprising: a casing provided with a ?uid inlet and
ing port designed for registry with said longitudinally ex
a ?uid outlet, a generally cylindrical cage member non
tending port in the sleeve member and, whenvin such
rotatively mounted within the casing and projecting into
registry, establishing communication between said slot
said ?ow line, a sleeve membermounvted for rotation and
and the hollow drive shaft, said longitudinally extending
?tting within said cage member, a hollow rotatable drive
shaft through which samples of fluid are adapted to be 50 ports being designed for registry with each other during
each 360° rotation of the sleeve member and at a time
expelled from the casing projecting into said casing and
when said ends of the slot in the carrier are out of regis
connected to said sleeve member in driving relationship,
ter with the cooperating ports in the sleeve member, a
a carrier-?tting within said sleeve member and provided
plunger reciprocable in said slot for expelling samples
with a chamber therein, interengaging means on the cage
from the slot through said longitudinally extending ports
member and vcarrier for preventing rotation of the, latter,
to the hollow drive shaft, means for imparting expelling
means con-trolled by rotation of the sleeve member for
strokes to the plunger, and interengagingcarn means on
conducting ?uid ‘from the chamber to the hollow drive
the sleeve member and plunger for effcting retraction
shaft, the ‘carrier and sleeve member being provided with
of said plunger.
coactin-g means responsive to the rotation of the sleeve
8. A sampling device for ?uid under pressure in a ?ow
member for successively admitting samples of ?uid into 60
line, comprising:, a generally cylindrical cage member
the chamber and trapping the same in the latter, a plunger
nonrotatively mounted within the casing and projecting
slidable in the carrier for expelling the trapped samples
into the ?ow'line, a sleeve member mounted for rotation
from the chamber into the hollow drive shaft, means for
and ?tting within said cage member, :said sleeve member
imparting expelling strokes to the plunger, and means
controlled by rotation of the sleeve member and oper 65 being provided with diametrically opposed ports, a hol
low rotatable drive shaft through whichsamples of ?uid
able after each expelling stroke of the plunger for pass
ing a quantity of ?uid completely thrdugh the chamber
are adapted to be expelled from the casing projecting
into the casing and connected to the sleeve member in
driving relationship, a carrier ?tting within said sleeve
line, comprising: a generally cylindrical cage member 70 member and having a diametrically extending slot there
to scavenge the latter.
6.’ A sampling device for ?uid under pressure in a ?ow
nonrotatively mounted within the casing and-projecting
' in, interengaging means on the cage member and carrier
into the flow line, a sleeve member mounted for rotation
and ?tting within said cage member, said sleeve member
' for preventing rotation of the latter, means de?ning a
diametrically extending slot in the carrier, the ends of
which are movable into register with the ports in the
being provided with diametrically opposed ports, a hollow
rotatable drive shaft through which samples of ‘?uid are 75 sleeve member during each 180° rotation of the sleeve
3,031,890
10
member, said sleeve member being provided with a longi
ports in the sleeve member, a plunger reciprocable in said
tudinally extending port for establishing communication
slot for expelling samples from the slot through said longi
tudinally extending ports to the hollow drive shaft, ?uid
between the hollow drive shaft and the interior of the
sleeve member, said carrier being provided with a co
pressure means for imparting expelling strokes to the
operating longitudinally extending port designed for regis
plunger, and interengaging cam means on the sleeve mem
try with said longitudinally extending port in the sleeve ,
ber and plunger for e?ecting retraction of the plunger.
member and, when in such registry, establishing commu
nication between said slot and the hollow drive shaft,
References Cited in the ?le of this patent
said longitudinally extending ports being designed for
UNITED STATES vPATENTS
registry with each other during each 360° rotation of the 10
sleeve member and at a time when said ends of the slot
in the carrier are out of registry with. the cooperating
2,623,544
2,784,594
Waters et a1 ___________ __ Dec. 30, 1952
Struck ______________ __ Mar. 12, 1957
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