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Патент USA US2406877

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Sept. 3, 1946.
A, R. wHlTTAKER
'2,406,877
OSCILLATING DISK METER
Filed Nov. 27, 1943
5 Sheeìs-Sheet 1
Sept. 3,1946.`
A_ R_ wHlTTAKER
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,
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2,406,877
OSGILLATING DISK METER
Filed Nov. 27, 1945
3.5heets-Sheet 2
'
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ATTORNÉY
Sept-3, 1946.
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A,
WHlTTAKER
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2,406,877
OSCILLATING DISK METER
Filed Nov. 27, 1945
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INVENTQR
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2,406,877
Patented Sept. 3, 1946
UNITED STATES PATENToFrIcE
OSCELLATING DISK METER
Alexander R. >Whittaker, New York, N. Y., as
signor to Pittsburgh Equitable Meter Comp-any,
Pittsburgh, P'a., a corporation of Pennsylvania
Applicationv November 27, 1943, Serial No. 511,931
17 Claims. (Cl. ’7S-257)
.
l
The present invention -relates to fluid meters,
and particularly to those of the oscillating disk
type.
.
This is a continuation-impart of my co-pend
ing application, Serial No. 420,407 ñled Novem
ber 25, 1941. I
It is an object of the invention to provide a
meter of this type having great accuracy over a
Wide range of flows.
i
2
` which prevents damage to the measuring cham
ber in case of freezing of the fluid within the
meter. In the type of meter having an en
closed reduction gear, the gear chamber has
U1 means interposed between the measuring cham
ber and the housing stop lugs, whereby the bot
tom c_over also serves to releasably hold the gear
housing in place. This allows expansion of the
measuring chamber away from the gear housing
It is a further object to reducel the pressure 10 in case of freezing, and as the measuring cham
absorption in this type of meter.
A further object is to reduce the size of the
measuring chamber while .increasing the rate of
flow therethrough.
l
Another object is the provision.A of a meter of
this type in which internal pressure due to freez
ing of water inthe meter will not 'damage the
gearing, meter chamber, or other parts of the
ber is divided, the two halves will also separate
in case of freezing, thus preventing damage to
the gearing, gear housing, measuring chamber
or measuring disk. Preferably, the measuring
chamber is divided at its middlel to facilitate its
manufacture.
.
g
‘
I
The invention will be described in greater de
tail in connection with th-e accompanying draw
ings, wherein is shown a preferred embodiment
meter.
of the invention by Way of illustration and
20
A further object is to provide a meter of this
wherein:
type in which a single means releasably' holds the
Figure 1 is a vertical sectional View of a pre
gear casing, measuring chamber and external
ferred
embodiment of the invention,
housing in assembled position.
Figure 2 is a similar view of the exterior cas
Another object is the provision of a combined
25 ing, taken on line II-II of Figure 3,
gear case and measuring chamber.
Figure 3 is a bottom view of Figure 2,
Another object is the provision of a combined
Figure 4 is an end view of Figure 2 looking
key and diaphragm to hold the measuring cham
toward the right with part of the casing in sec
ber in position.
Another object is to construct the measuring
Figure 5 is a plan view of the gear case,
30
chamber so as to facilitate its manufacture.
Figure 6 isa plan view of the measuring cham.
In accordance with the present invention, I
ber,
Y
‘
provide an oscillating disk meter having a slot
Figure ’7 is a plan View of the bottom half of
in the housing adjacent to and parallel to the
the measuring chamber,
.
division plate, and a guide roller extends from
Figure 8 is a vertical sectional view of the
the oscillating dislr` into the slot to guide the disk.
measuring chamber‘and. assembled gear housing,
The meter chamber is provided with double inlet
the gears being removed,
openings which open into the interior of the
Figure 9 is an end view of Figure 8 looking to
meter chamber from the top and bottom thereof
ward the right,
and thus reduce the pressure absorption of the
Figure 10 is a side elevation of the measuring
meter. The inlet openings are located in the'top
tion,
and bottom walls on >one side of the division
disk,
~
i
.
`
Figure 11 is a plan View of the measuring disk,
plate or diaphragm, and outlet depressions are
Figure 12 is a vertical sectional view of a por
formed in the top and bottom walls which merge
tion of the outer housing, and
in the meter chamber on the other‘side of the di
vision plate, an outlet passage being in communi 45 VFigure 13 is a side elevation of the division»
plate.
cation therewith and sealed ofi from the annular
Referring to the drawings (Figures 1 to 4),
inlet chamber. I prefer to provide shields for
there is shown the external meter casing or
theA inlet openings to prevent currents inthe
housing I having a threaded inlet connection 2
measuring compartments acting on. the disk.
The measuring chamber is positioned in the eX 50 and a threaded outlet connection 3. The interior
` of the housing has three bosses 5, Stand ‘I which
teri‘or housing by internal shoulders or stops
arermachined to provide shoulders oristop sur
which provide an annular space between the
faces 8,’S and Iû in a common plane. , At the
measuring chamber and housing walls communi
bottomof the casing there is provided a ñange I2,
eating with the inlet openings, and cri-‘operating
the inner edge I3 o_f which is machined on acir
sealing surfaces on the housing and measuring
cle on its interior slightly larger than the circle
chamber surrounding the outlet separate the
formed by walls I4, I5 and I6 of bosses 5, 6 and 1.
outlet from the inlet, thus compelling the fluid
The measuring chamber 35 (Figures 1, 6, 8 and
to be measured to pass through the measuring
9) comprises a lower portion 36 and an. upper
chamber. The bottom plate is held aga-instfthe
measuring chamber by pressure releasable means (it) portion 31, said upper portion having projecting
3
2,406,877
lugs 38, 39 and 40 which are machined on the
top surfaces 4|, 42 and 43 to engage the shoulders
8, 9 and l0 of bosses 5, 6 and 1.
The outer sur
faces 44, 45 and 46 of the bosses or lugs 38, 39
4
other and terminate short of contact to provide
a space therebetween adapted to accommodate
piston web |05 as illustrated in Figure 8.
The dividing web of the disk is cut out at |09
and 40 constitute machined ribs which engage
in known manner to accommodate a division
the surfaces I4, I5 and I6 of bosses 5, 6 and 1,
plate or diaphragm III (Figure 13), and a de
and thus position the upper portion 31 of the
pending headed pin I I0 secured in the wall of the
meter chamber in the outer housing I.
piston carries a guide roller | I0' cooperating with
The reduction gear housing or cover 50 (Figure
a slot III’ in the meter chamber. The guide
5) has projecting arms 5|, 52 and 53 which are 10 roller and slot eliminate sliding frictional en
machined at their extremities 54, 55 and 56 on
gagement between the piston andv division plate
a circle and thus provide flange means on cover
50. The upper surface of the top portion 31
(Figure 6) of the meter chamber has a generally
I and reduce noise in the operation of the meter.
This guide roller and slot may be located on either
side of the division plate.
annular rib 58 which is machined on its top sur 15
The bottom and top walls of the meter cham
face 59 to provide a seat for the lower machined
ber are slotted at I I2 and |I3 (Figures 9, 6 and
face 6| of the reduction gear housing 50. The
7) adjacent the outlet opening ||1 to accommo
lugs 38, 39 and 40 (Figures 6 and 9) are rabbetted
date the tabs | I5 and | |6 of the division plate,
to provide horizontal faces or shoulders 63, 64
which lies against the machined wall | I4 between
and 65 preferably in the same plane as top sur 20 the bottom wall || 8 and top wall ||9 of the me
face 59, and arcuate Vertical surfaces 66, 61 and
ter chamber. The slots ||2 and ||3 preferably
68. The extremities of arms 5|, 52 and 53 of the
are formed between one side wall ||4 of outlet
gear case are received in the rabbetted portions
opening ||1 and bosses ||2’ and |I3’, as shown
of lugs 38. 39 and 40 respectively, and the sur
in Figure 9, extending into the outlet opening.
faces 66, 61 and 68 engaging ends 54, 55 and 56
It
will, therefore, be understood, from reference
position the gear case in the housing. A dowel
to Figure 9, that the division plate I I I forms one
69 in the lug 39 co-operating with a hole 1|
side wall of the outlet port or opening |I1, ex
in arm 52 insures proper positioning of the gear
tending vertically between the bottom wall IIS
case. The upper surfaces 12, 13 and 14 of arms
of the chamber section 36 and the top wall ||9
5I, 52 and 53 are machined flush with the tops 30 of chamber section 31. At its inner end the
of lugs` 38, 39 and 40.
plate | || carries a middle cylindrical portion |2|
The lower portion 36 (Figures 1, 7 and 8) of
preferably integrally cast therewith, which is
the meter chamber is rabbetted internally at 16
adapted to lie between the machined ribs 96 and
and receives a rib 11 onthe upper portion to
|0I. This thickened portion I2| has a hole |22
position the two sections in assembled relation.
therein, and a pin |23 extending through the hole
The bottom section has lugs 18, 19 and 8|) which
|22 and into hole |24 in the rib 96 holds the
are machined on a circle on their outer surfaces
division plate against displacement with its edge
8|, 82 and 83 to be received by the edge I3 of
|26 in engagement with the vertical outer sur
flange I2, and the ends84, 85 and 86 of the lugs
faces of the ribs 96 and |0I. Pin |23 may be ex
lie ñush with the bottom surface 81 (Figures 1, 40 tended into a similar hole in rib | 9|.
'
2 and 3) _of the ñange I2 in assembled position.
If desired, a slot |28 may be provided in rib
A gasket or washer 88 is located on the surface 81
|21 of the outer casing I to receive the project
of flange I2. The suitably lined bottom plate
ing end of the divisionplate to brace the same
or cover of frangible material, such as cast iron,
and to insure proper positioning of the meter
has a machined surface 89 adapted to engage the 45 chamber in the casing.
washer 88 and bolts 9| passing through the slot
It will be apparent that by reason of the bosses
ted lugs 92 and 93 of the bottom plate and hous
5, 6 and 1 extending from the Walls of the casing
ing respectively releasably clamp the gear case
there is provided an annular space between the
and two meter chamber sections in the housing
casing I and the measuring chamber 35, which
I. With this construction, in the event the in 50 space, however, is sealed off from the outlet pas
terior liquid in the meter freezes, one or more of
sage |28’ and outlet opening |I1 by the ma
the lugs 92 of the cast iron bottom cover will
chined surfaces I6, |21, I3 and |3| on the inte
break off, thus relieving the force holding the gear
rior of the casing | surrounding the outlet pas
case and meter chamber sections assembled, and
sage |28’ and engaging complementary sealing
the expansion of the ice will merely force these 55 surfaces 46, |32, |33 and |34 respectively on the
apart without breakage. By dividing the meter
ing chamber substantially at its middle, the man
ufacture of the chamber is facilitated.
The lower half of the measuring chamber (Fig-
exterior of the measuring chamber 35. Thus,
the measuring chamber is substantially entirely
surrounded by fluid. The bottom wall II8 and
top wall || 9 of the measuring chamber have in
ure '7) of the meter has a cylindrical wall 95 and 60 let openings |36 and |31 respectively of suitable
an inner concentric wall or rib 96 with a well 91
shape, whereby fluid to be measured may enter
formed within the rib 96 and having at its cen
the measuring chamber. The inlets |36 and |31
ter a stub or spindle 98. >A roller 99 (Figures 1
are shielded by shields |40 and |4| partially clos
and 8) preferably is journalled on the shaft 98.
The upper half of the measuring chamber simi
larly has a cylindrical wall 95 (Figures 1 and 8)
which in assembled position is a continuation of
the wall of the lower chamber, and a concentric
wall or rib |0| with a well |02 within the rib.
Within the cylindrical wall 95 is located a cylin
drical piston |04 (Figure 10) having a middle
Web |05 which may be perforate and which has
a central re~enforcing pin |96 passing through
the piston stem |01 and |08 and riveted at its
ends. Walls 96 and |0| extend toward eaßh
ing the inlets and which may be cast integral
with the meter chamber, and serve to prevent
lateral currents acting on the disk. Upraised
shields |40 and |4| are closed on the incoming
ñuid side and extend above and partially over
the two inlet ports in such manner as to prevent
incoming fluid ñow currents from directly im
pacting piston |04. This results in an improve
ment in accuracy, particularly at high rates of
flow. The bottom portion of the measuring
chamber has an outlet recess or depression |38
and there is a similar outlet recess or depression
i 12,406,817
«|39 `in the .top wall which depressionsrmerg-e .at
the outlet openingï|`| 1 to provide a combined ‘out
let ‘for fluid from the .measuring chamber. The
upper shell lof the measuring 4char-uber has a boss
|4|’ Within the area defined by'r'ib .5S which .re
ceives bushings |42 »of hard rubber, graphite, or
other suitable `material .and has a shaft |153 ex
tending therethrough with -a driven dog .Ill?'ïin
the central‘well |102. A-pinîion 1|14f5‘is suitablyse
Acur-ed to the opposite lend of shaft |43, for example, by :a pressed fit. `The upper shell .also has
bosses |46, |41 and ¿|48 in which are located har-d
rubber bushings .and in which are Vjournalled one
end of the _shafts of suitable reduction gears, in
.dicated generally by the numeral .Il-til. 'The top
Wall |5.| of the gear Yhousing '50
similar in
ternal bosses |52 Yfor iournallin-g the opposite ends
of the reduction gear shafts. ‘In the >central boss
|55 is -J'ourna/lled a spindle |56 having the :linal
a part on the outer fend of said 'plate Aseated in `>a
slot in said outer_wall and positioning said »divi
Vsion plate to Vform .one Wall of the outlet port,
a pin extending into said enlarged portion and
into at least one section of said intermediate
Walls, `and a cylindrical piston having a »dividing
membrane therein received ¿between 4said inter
mediate Walls, said _piston and membrane ïbeing
“cut .away to accommodate `said `division plate.
"4. ’In an oscillating piston meter, an outer
housing, alcyllindrical measuring „chamber in said
housing 4and having an outlet opening therein
and 'having an intermediate cylindrical wall, `a
4separati-1: division plate `extending from the inter
'is mediate wa‘ll through said opening and yconstitut
ing one wall of the outlet opening therein, means
`extending into said opening »to provide a slot
accommodating the -division plate, a slot in the
outer housing to accommodate the projecting end
gear |51 »on the inner end thereof, and a driving .2.0 of said division plate, and means to secure said
division plate 'to said intermediate wall.
crank or dog .|58 on the outer .end which eng-ages
»5. In'an oscillating piston meter, a generally
theregister drive dog 16,0. Cover or housing 5i?
cylindrical measuring chamber having top fand
is packed witha suitable :grease upon assembly.
bottom Walls, a ~cylindrical outer Wall lhaving a
rI‘he lower portion |6| (Figur-e123 of the `regis
substantially radial opening therethrough, .and
ter case is received on the shoulder |62 Aofthe
an intermediate cylindrical wall, a metering lele
casing -I and the flange ‘|63 lis spun over von the
ment
in said chamber, a division plate extending
sloping flange |64 of the register case to hold it
from the intermediate wall through Ysaid radial
asserribled.V A shoulder -.Hifi „receives the bottom
opening `to form one wall thereof, inlet openings
plate of the register and the top portion ~«|66 pro
in the top and bottom walls >of the measuring
3.0
vided with a‘suitable lid is secured to the bottom
chamber on one side of said division plate, :de
portion by screws passing through suitably aper
pressions in the V.top and bottom Walls on the op
tured lugs inthe topand V.bottom portions.
v'What I claim ’as my invention and desire to se
cure byLetters Patent is: `
`
`
`
posite side of said divisi-on plate merging into
the radial opening inthe measuring chamber,
.an outer casing, means locating said meter cham
1, In an oscillating piston meter, a measuring
ber Within the outer casing in spaced `relation
chamber providing top and bottom Walls and a
thereto to provide an annular inlet chamber
cylindrical wall with a substantially radial outlet
communicating with »the inlet openings, an inlet
Vopening therethrough, a metering element >in said
connection in the outer casing communicating
chamber- outlet depressions in the top and bot
with said annular chamber, cooperating >sealing
tom Walls of said measuring lchamber merging 40 surfaces on the outer casing and measuring
into said radial opening, an outer casing, `means
chamber sealing the radial opening from .said
locating said meter chamber Within the Áouter
annular inlet chamber, and
outlet connection
casing in spaced relation thereto to provide an
in the outer casing communicating with said
annular inlet chamber, 'an inlet -connection in
radial opening.
the outer casing communicating `with said annu- '
16. In an oscillating piston meter, a measuring
lar chamber,_inleït openings in the ltop and `bot
chamber providing top and bottom Walls and ra
tom Walls of said measuring chamber, co-oper
cylindrical Wall with a substantially radial Aopen
ating 'means on the outer «casing and‘measuri-ng
ing therethrough surrounded by smooth-integral
chamber sealing the radial opening from said
sealing surfaces on said cylindrical wall, a meter
annular inlet chamber, and an outlet connection
ing element in l‘said chamber, outlet depressions
in the -outer casing communicating directly with
in the top and 'bottom vva'lls of said measuring
said radial opening.
`
chamber `merging into said radial opening, inlet
2. In an oscillating piston meter, an outer
openings in the top and bottom Walls -of said
housing lopen at the bottom and closed at the
measuring chamber, an outer `casing having an
top, a register driving spindle journalled in l'said
outlet connection surrounded by smooth integral
top, a measuring chamber, a gear case loos-ely ‘as
sealing surfaces, cooperating projecting means
sembled to said measuring chamber and posi
on the outer casing and measuring chamber lo
tioned thereby, reduction gearing in said gear
eating said measuring chamber within Athe outer
case 'journ'alled in the top Wall thereof and‘in'th'e
casing in spaced relation thereto and in sealing
top wall of the measuring> chamber, means AeX 60 engagement >adjacent the outlet opening, ìand
tending through the gear casing> to drivefsaid
providing an annular inlet chamber, and an in
register spindle, projecting stops ink ‘said outer
let Aconnection in the outer casing Vcommunicating
housing serving as abutments for the gear case
with »said annular chamber.
and measuring chamber, 'and a ‘bottom >cover for
7.,'In an oscillating -piston meter, an out-er
said housing `releasa-bly holding said gear case Cf.. Ui
yhousing open at 'the bottom and closed at the
and measuring chamber in position.
top, _a 'measuring chamber having ‘lugs thereon,
‘3. 'In an oscillating .piston meter, a measuring
a. gear case adapted to be loosely assembled to
chamber 'having an inlet port andan outlet ,port
said measuring chamber and having arms posi
lcomiiirising two half sections to provide a cylin
»tioned
by said lugs, reduction gearing in said
drical ‘measuring chamber having an intermedi
case journalled in the top Wall of said measuring
ate cylindrical Wall in `each half section, a sepa
chamber and of said gear case, projecting stops
rate and removable division plate extending from
in said outer housing serving as abutments for
the outer Wall of said chamber to the intermedi
the gear case and measuring chamber lugs,
ate walls and having at its inner end an enlarged
portion received between said intermediate walls, 75 means centering said gear case and measuring
7
2,406,877
chamber in spaced relation to the housing, and a
bottom cover for said housing releasably retain
ing said gear case and measuring chamber in
operative position.
8. In an oscillating piston meter, a casing, a
measuring chamber in said casing providing top
and bottom walls and a cylindrical wall with a
8
in the path of incoming ñuid flow, and a cylin
drical piston received between said intermediate
walls, said shield means preventing lateral cur
rents in the incoming fluid from impacting di
rectly on said piston.
12. In an oscillating piston meter, an outer
housing open at the bottom and providing in
ternal shoulders, a measuring chamber in abut
substantially radial outlet opening therethrough,
intermediate cylindrical walls extending from
relation to said shoulders, a gear case adapt
the top and bottom walls, said -top and bottom 10 ting
ed
to
be loosely assembled to said measuring
walls being formed with ñuid inlet openings, out
chamber, flange means on said case interposed
let depressions in the top and bottom walls of
between the measuring chamber and said shoul
said measuring chamber merging into said radial
ders, reduction gearing in said case journalled in
opening, a cylindrical piston having a dividing
said measuring chamber and gear case, means
membrane received between said intermediate
for centering said gear case and measuring
walls, and shield means disposed in the path of
chamber in said housing, and a bottom cover for
vincoming ñuid ñow and extending partly over
said housing releasably retaining said gear case
said inlet openings for preventing direct impact
and measuring chamber in operative position.
on said piston of fluid entering said casing.
13. In an oscillating piston meter, a meter cas
9. In an oscillating piston meter, an outer 20
ing having fluid inlet and outlet connections,
housing open at the bottom and closed at the top,
means for mounting a register on one end of said
a register driving spindle journalled in said top,
casing, the other end of the casing being formed
a measuring chamber comprising two separable
with an aperture, means providing internal seat
half sections to provide a cylindrical measuring
means within said casing facing said aperture,
chamber having an intermediate cylindrical wall
a measuring chamber housing within said casing
in each half section, a gear case loosely assem
having fluid connection with said inlet and out
bled to said measuring chamber and positioned
let connections, means for mounting register
thereby, reduction gearing in said gear case jour
drive
mechanism upon the end wall of said hous
nalled in the top wall thereof and in the topV wall
opposite said aperture and outside said cham
of the measuring chamber, means extending 30 ing
ber, a cover for said drive mechanism seated on
through the gear case to releasably engage and
said housing, seating means on said housing and
drive said register spindle, projecting stops in
cover adapted to ñtwith said internal seat means
said outer housing serving as abutments for the
on the meter casing, and a removable cover for
gear case and measuring chamber, a bottom
said aperture formed to hold said housing and
cover for said housing engaging said measuring
register
drive mechanism cover against said in
chamber, and irangible means securing said
ternal
seat
means.
cover to said housing.
14. In the meter deñned in claim 13, cooper
10. In an oscillating piston meter, an outer
ating peripheral seating means within said meter
housing open at the bottom and closed at the top,
a register driving spindle journalled in said top, 40 casing and on said housing for positioning said
register drive mechanism in proper alignment to
a measuring chamber comprising two separable
drive said register.
half sections to provide a cylindrical measuring
15. In an oscillating piston meter, a housing
chamber having an intermediate cylindrical wall
defining a measuring chamber, external bearing
in each half section, said housing and chamber
providing cooperative seating surfaces in sliding 45 seats on the upper wall of said housing, a regis
ter drive gear train having substantially vertical
contact to center said measuring chamber, a
shafts
mounted on said bearing seats and includ
separate division plate releasably engaging said
ing a drive spindle projecting within said cham
half sections and extending from the outer wall
ber, a cover for said gear train provided with
to the intermediate walls and having an enlarged
bearings
for said shafts, and cooperating seating
portion received between said intermediate walls,
and positioning means on said cover and the
a gear case loosely assembled to said measuring
upper Wall of said chamber for properly locating
chamber and positioned thereby, reduction gear
said cover, said gear train being held in operative
ing in said gear case journalled in the top wall
assembly by said proper positioning of said cover.
thereof and in the top wall of the measuring
16. In an oscillating piston meter, a meter
chamber, means extending through the gear
casing having fluid inlet and outlet connections,
case to releasably engage and drive said register
a housing within said casing defining a measur
spindle, projecting stops in said outer housing
ing chamber, said casing having an inlet fluid
receiving space extending partly about said
chamber, a relatively light piston os
housing engaging said measuring chamber, and 60 measuring
cillatable
within
said chamber, an inlet opening
frangible means securing said cover to said
serving as abutments for the gear case and
measuring chamber, a bottom cover for said
housing.
11. In an oscillating piston meter, a measuring
chamber providing top and bottom walls and a
cylindrical wall with a substantially radial open
through an end wall of said housing providing
for ingress of fluid directly from said space into
said chamber to actuate said piston, and shield
means on said wall partially extending over said
inlet opening for preventing direct impact of in
ing therethrough, intermediate cylindrical walls
let fluid current now on said piston.
extending from the top and bottom walls, outlet
17. The meter deñned in claim 16, wherein
depressions in the top and bottom walls of said
said shield means comprises an integral exten
measuring chamber merging into said radial
sion of said housing at said inlet opening pre
opening, said chamber having inlet openings in 70 senting
a closed side facing said inlet ñuid flow.
f the top and bottom walls thereof, protectiveA
shield means extending -over said inlet openings
ALEXANDER R. WHITTAKER.
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