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Патент USA US2404514

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“Emily 23, 1946.
2,404,514
G. T. MCCLURE
‘
VALVE DEVICE
Filed ‘Nov. 18, 1944
2 Sheets-Sheet 1
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INVENTOR.
(?eTmTMc Chime ‘
BY aim
. ATTORNEY
_
July 23,1946.
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'
'
G. T. MOCLURE
'
VALVE
‘7
'
2,404,514
DEVICE
Filed Nov. 18, 1944
_
2 Sheets-Sheet 2 v
» Fig.2.
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26
‘
INVENTOR.
Glenn'II Mo CLpmc
Patented July 23, ‘1946
2,404,514
UNITED STATES PATENT’ OFFICE.
VALVE DEVICE
Glenn T. McClure, McKeesport, Pa., assignor to
The Westinghouse Air. Brake Company, Wil
merding, Pa., a corporation of Pennsylvania
Application November 18, 1944, ‘Serial N 0. 564,059 '
8 Claims. (01. 277—21)
1
2
This invention relates to valve devices for con
trolling the ?ow of ?uid under pressure and more
‘with a valve seat I3 for making sealing engage
particularly to those which are electrically op
erated and used in conjunction with industrial
inafter more fully appear, controls the?ow of
?uid under pressure from the supply chamber 5
' machinery, ?uid pressure brakes and the like.
An object of this invention is to provideran elec
trically operated valve device which is highly
sensitive‘ to a change in the controlling electric
circuit.
ment with a tapered valve l4 which, as will here
to the delivery chamber 1. ' A ?uted stem I 5 of
this valve [4 is slidably guided in the bushing l2.
Integral with the wall II and the casing 3 sov
as to de?ne the delivery chamber 1 and to sepa
rate that chamber from the exhaust chamber. 9 ,
Another object is’ to provide an improved e1ec-' 10 is a wall l6 having a bore with a bushing ‘Kl-‘l,
trically operated, ?uid pressure balanced control
pressed therein in spaced axial relationship with
valve device.
the bushing l2. The lower end of this bushing‘
A further object is to provide an improved elec
I l is provided with a valv‘e‘seat [8 upon which
trically operated valve device, the valve portion
' the valve IQ of a valve member 20' is adapted to
of which may be readily adapted to operate in 15: seat ‘for closing communication between cham- ‘
response to the making or breaking of_ either a
bers l and 9. A stem 2| of the valve‘member 20
normally open controlling electric circuit or a
extends through the bushing l1 and chamber 1
normally closed controlling electric circuit.
into abutting relationship with the bottom of the
Still another‘ object is to provide an improved
stem l5 ofthe valve l4;
'
T
'
electrically operated valve device in which the. 20
The valvemember 20 is‘slidably mounted in a
operation is unaffected by variations in the pres
bushing 22 pressed into an enlarged portion of a
sure of ?uid supply or delivery.
wall'23, which wall is integral with the casing 3
Other objects and advantages will appear in
and the walls ll, l6 and 23 and serves to sepa
the following more detailed description in con
rate chamber 9 from chamber 5'. Retained in an
nection with the accompanying drawings, where 25'. annular. groove in the valve member 20'is_ a- seal
ing ring 24 which presses against the walls of said
Fig. 1 is a vertical sectional view of an elec
groove and the inner surface of the bushing to
trically operated valve device which embodies one
prevent leakage of ?uid under pressure from
form of the invention, the valve mechanism be
chamber 5 to chamber'll, which chamber 9, with
ing shown disposed in a certain manner; and Fig. 301 the valve mechanism arranged as shown in Fig. l,
2 is a combined elevational and sectional view of
is open to atmosphere.‘ Contained in chamber 5,
in
'
.
the valve device illustrating the valve mechanism
reversed.
'
The control valve device, as shown in Fig. 1 of
the accompanying drawings, may include a valve
portion 1 and a magnet portion 2. The valve
portion l comprises a casing 3 which is provided
with suitable mounting, lugs 4. ‘ This casing pro
vides a wall, structure ‘ which de?nes supply
7 chamber 5, which may be connected by Way of a
passage 6 to a suitable ?uid pressure supply
source (not shown) and also de?nes a delivery
chamber 1 which may, when theparts are as
sembled as shown in Fig. 1, be connected by way
of a passage 8 to a device (not shown) to be op
erated by ?uid under
ture also de?nes an
may be open by way
phere when the parts
Fig. 1.
pressure. The wall struc
exhaust chamber 9 whichv
of a passage ID to atmos
are assembled as shown in'
'
’
Integral with the casing 3, and serving to sepa
and interposed between and engaging a cap. nut
25 in the bottom of said chamber and the bot
tom of the valve member 20, is a spring 26 which“
urges valves I9 and I4 towards the positionin
which they are shown in Fig. 1.
.
.
Thus, it will be apparent that the supply cham
ber 5 may communicate by way of a- valve con
trolled passage in wall I l with the delivery cham
450* ber- ‘l; ‘and that the passage in wall 23 between
chamber 5 and exhaust chamber .9 is closed off
by the valve member 20 and thesealing ring‘ 24.
It should be noted that the bushings l2 and 22
open to the chamber 5 in opposite directions and
it is highly desirable that the areas of the open
ings in said bushings and in bushing ll be ,as
nearly as possible the same size for reasons to be ‘
explained later, but it will be understood that the
inside diameter of the bushing I’! will be slightly
lessjthan the inside diameter of bushings "l2 and
22 so as to provide for a valve seat at either end
rate the chamber 5 from the chamber 1, is a wall
of the bushing.
ll, through an enlarged portion of which there ,
extends a bore having a bushing l2 pressed there-
.Also, it should be understood that the distance
from the lower end ofthe bushing ll to the upper
in. The upper end of this bushing 12 is provides
end or the bushing I2 is substantially equal. to
a
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2,404,514
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a
, distance from the upper end of the bushing I‘! to
the lower end of the bushing 22, in order to per
mit a reversing of the valve mechanism as will
‘ appear later in connection with the description of
Fig. 2 of the drawings. That is to say, the dis
tance between the remote ends of the bushings ‘
l1 and I2 is equal to the distance between the
‘
.
"
'
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'
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ll, past valve l9 into chamber 9 which is con
nected by passage ill to atmosphere.
As previously noted, the areas of the openings
in the bushings H and 22 are as nearly as possible
equal and, since the pressure of ?uid in chamber
5 acting upwardly on the bottom of the valve
member 2!] will be the same as the pressure of
fluid in chamber 1 acting downwardly on the
valve member 26, the only forces to be overcome
remote ends of bushings l1 and 22.
The magnet portion 2 comprises a core 21 which
is centrally mounted by screw-thread means in 10 by the armature 36 of the magnet portion 2 is
that of the spring 26 and friction, which will be
an annular top portion 28 of the casing 3. The
relatively small. It will thus be seen that an
magnetic portion 2 also comprises a coil 29 ar
electromagnetic control valve device is provided
ranged to be mounted over the core 21, which
which canoperate over a wide range of current
core is prevented from rotatingduring assembly
supplies and regardless of the pressure in the
15
by a dowel pin 3i] secured to the portion 28 and
chambers 5 and ‘I.
Also, as previously noted, the areas of the open
ings in bushings l2 and 22 are equal so that with
an opening iyl'in a spool 32 for the coil 29.
valve I4 seated, the under side of said valve and
The coil 23 is inclosed by a cap portion 33
upper side of valve portion 20 will be open
which has screw-threaded engagement with the 20 the
to atmsophere and the pressure of fluid in cham
casing 3. This cap portion acts throughrthe me
her 5 acting in a downwardly direction on valve
dium of gaskets 36 to hold the coil 29 ?rmly
projecting upwardly from. the top surface thereof,
the projecting portion of the pin extending into
against 'the'upper surface of the portion 28 of
the casing. A bushing 3 5 is provided in‘ an axial
ill will be counterbalanced by the same ?uid
’ pressure acting in an upwardly direction over the
area on the valve portion 2!). When the
bore in the‘ top of the cap portion 33, in which 25 same
electric circuit isopened, the'spring 29 will act
bushingan armature 36 is slidably guided for
to promptly return the valves i4 ‘and ill to the
reciprocatory movement upon the energization
position in which they are shown in Fig. 1.
In some instances it will be more desirable'to
have the valves operate in a manner just the
reverse of ,thatdescribed. That is to say} fluid’
and deenergization of the coil 29.
The armature 33 is provided with a stem 3'!
which is slidably guided in an axial bore 38 in
the core 27, which stem extends‘ downwardly
through thecore and into abutting engagement‘
under pressure will be supplied to‘ the 'de'vicdto
be operated when the electric-circuit ‘is closed
with the‘top of valve M in chamber 5.. Screw-i
thread means 39 having a check nut 62 are pro; ' , and fluid under pressure will be vented ‘from the
vided in the ‘top of the armature 36 for effecting. 35 device-to be operated when the circuit is-opened.
For this purpose the valve assemblage is-merely'
the necessary adjustments. The'stem 37 is pro
reversed and the proper seats ‘provided therefor
vided with one or more ?attened portions 31a
as will now appear.
which extends from the lower end of the ‘stem to
Referring now to Fig. 2, the same parts; bearing .
a point located slightly above the lower ‘face of
the reference numerals corresponding tothesame
the armature 36, thus providing a communicae
parts in Fig. l, are shown disposed in a- manner
tionbetween the chamber 5 and the space between
to obtain this result. Now, however, chamber 1'
the'lower face of the armature and the adjacent
will be in constant open communicationwith'the
upper face of the core .21. It should here'be
atmosphere by way of passage '8 while chamber
mentioned that air supplied to this space ?ows 45 9 will be in communication by way of passage 10
around the core to the spacev above the upper end ' with the device to be operated by ?uid under pres
face thereof thus substantially balancing the core
sure. The valve member 29 isslidably guided in
at all times. A cap nut 4| is provided in the
the bushing l2. ' The upper end of thelbushing' llv
cap portion 33 which may be removed when it
has been provided with a-valve seat-'42-‘f0r coop-l 7
is. desired to effect armature adjustment just 60 eration with the ‘valve 19 of‘ the valve-member’ 20.
The valve I4 is slidably guidediin the bushingl'22
With the control valve device in the position in
by means of the fluted stem 15 which-is-hel'd in
which it is shown in Fig. 1, fluid under pressure
abutting engagement with the stem 2i of thelvalve
?ows by way of passage 6 from a supply vsource,
member Z?by the force of the springl?. The
not shown, to the chamber 5, past valve l4 and 55 lower end of the bushing 22 'hasIbeen-provided
?uted stem 15 to chamber 1 and thence by way
with a valveseat 53 for cooperation with ithe'"
of passage 8 to the device (not shown) to be
valve it.
operated by ?uid under pressure. The valve [9
With the circuit through the'magnet-po-rtionl ‘ '
being in‘ engagement with seat l8, communication
open, the valves will be in the-position'in' which
of chamber 1 with the atmospheric. chamber 9
they'are shown in Fig. 2. ,Fluidunder pressure will flow from chamber 9,-and consequently from
is closed off.
the device to be operated to chamber 9 by way of '
When the coil 29 of'the magnet portions 2 is
passage l9, through the bushing ll, past valve ‘I9 _~
energized by an electric current, armature. 36
to- chamber ‘I, and thence'by way of passage 8ito
will move downwardly under the in?uence .of the
atmosphere. The pressure of'fluid inchamber 5
electromagnetic ?eld thus set up and act through
will exert a downwardly directed force On valve
the medium of the stem 31 to seat the valve l4,
member is which will'counterbalance the vfluid’
thereby interrupting the flow of fluid under pres
mentioned.
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sure from chamber 5 to chamber 1. '
‘
'
Downwardjmovement of the valve Hi acting V
priessurein chamber'B acting on'thevalvel?.
When the circuit through the magnet portion
2 is closed, valve member, 20 will be actuatedv
throughthe medium of its ?uted stem l5 and stem
2| of thevalve member 20 causes the valve‘lS
to unseat, thuspermitting fluid under pressure
in chamber 1, and consequently in thefluid pres
spring 26until Valve 59 engages .valve.»seatv42f
sure operated device connected to chamber 1 by
way of passage 8, to vflow‘through the bushing
‘ time, valve’imembenz? will ‘act‘throughtthegmesi ~
downwardly thereby against the .pres'sureaof
closing communication between :delivery. .cham-z
bery? and atmospheric chamber-fl. .Atgtheisame.
I
‘2346431514
5
dium of its stem>2l and the ?uted stem [5 of the"
valve M to unseat valve l4 thereby- permitting
?uid under pressure in chamber 5 to flow past
valve I4, through bushing 22 to delivery chamber
9, and thence by way of passage ID to a device to
be operated by fluid under pressure.
It will be noted that the pressure of ?uid in
chamber 5, acting in a downwardly direction on
valve member 20, will now counterbalance the
pressure of ?uid in chamber 9, which is now the
same as that in chamber 5, acting in an upwardly
direction over an equal area of the valve member
6,
tweenthe second and third chambers and means
for e?ecting the operation oi said valve mech-'
anism.
.
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a
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4. A valve device comprising a casing-having a
wall structure de?ning a ?rst chamber, a second
chamber and a third chamber, said wall structure
having passages through which communications
between ‘certain of said chambers may be estab
lished and disestablished, a valve mechanism dis~
10 posed in said wall structure for establishing-and
disestablishing said communications, said valve
mechanism when disposed in said wall structure
20. Thus, when the circuit through the magnet
in a certain manner plugging communication be
portion 2 is opened, the spring 26 will be able to
tween the ?rst and third chambers and being opé
act promptly in moving the valves to the position 15 erable to'control a communication between the
in which they are shown in Fig. 2.
?rst and second chambers and a communication
Having now described my invention, what I
between the second‘and third chambers so as to
claim as new and desire to secure by Letters
open one’ communication while closing thewother
and when disposed in said wall structure in a re~.
1. A valve device comprising a casing having a 20 verse’ manner plugging communication between
wall structure de?ning a ?rst chamber, a second
the ?rst and second chambers and being operable
chamber and a third chamber, said wall structure
to control said communication between the sec
Patent, is:
‘
'
having passages through which communications
ond and third chambers in the opposite way and
between certain of said chambers may be es
a communication between the ?rst and third
tablished and disestablished, a valve mechanism 25 chambers so as to open one of the two last men
disposed in said wall structure and operative for
establishing and disestablishing said communica
tion, said valve mechanism when disposed in said
wall structure in a certain manner being operable
to control a communication between the ?rst and
second chambers and to maintain closed a passage
between the'?rst and third chambers, and when
disposed in said wall structure in a reverse man-'
ner being operable to control a communication
tioned communications while closing the other,
and means for effecting the operation of said
valve mechanism.
‘
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5. A valve device comprising a casing having a
supply chamber, a wall structure within said cas
ing de?ning and separating a delivery chamber
and an exhaust chamber, said wall structure be
ing so formed as to separate the delivery and ex
haust chambers from said supply chamber, three
between the ?rst and third chambers and to main 35 axially aligned passages in said wall structure,
tain closed the passage between said ?rst and
the ?rst passage leading from said supply cham
second chambers, and means for effecting the
ber to said delivery chamber, the second passage
operation of said valve mechanism.
7
leading from said delivery chamber to said ex
2. A valve device comprising a casing having a
haust chamber, and the third passage leading
wall structure de?ning a ?rst chamber, a second 40 from said supply chamber to said exhaust cham
chamber and a third chamber, said wall structure
ber, valve means movable as a unit comprising a
having passages through which communications
valve for each of the ?rst two passages named
between certain of said chambers may be es
and operable to open one of these two passages
tablished and disestablished, a valve mechanism
when closing the other, said valve means further
disposed in said wall structure for establishing 45 comprising
a plunger with means for slidably
and disestablishing said communications, said
valve mechanism when disposed in said wall
structure in arcertain manner being operable to
sealing said plunger within said third passage
which plunger is subject at all times to the pres
sure of ?uid in said supply chamber so that the
control a communication between the ?rst and
second chambers and also plugging communica 50 pressure of ?uid acting on either valve when
seated is counterbalanced, and means for operat
tion between the ?rst and third chambers and
ing said valve means.
,
when disposed in said wall structure in a reverse
6. A valve device comprising a casing having a
manner being operable to control a communica
supply chamber, a wall structure ‘Within said cas
tion between the ?rst and third chambers and
also plugging communication between the ?rst» 55 ing de?ning and separating a delivery chamber
and an exhaust chamber, said wall structure be
and second chambers, and means for e?ecting the
ing so formed as to separate the, delivery and ex
operation of said valve mechanism.
haust
chambers from said supply chamber, three
3. A valve device comprising a casing having a
axially aligned passages in said wall structure, the
wall structure de?ning a ?rst chamber, a second
chamber and a third chamber, said wall struc 60 ?rst passage leading from the supply chamber to
the delivery chamber, the second passage leading
ture having passages through which communica
from the delivery chamberito the exhaust cham
tions between certain of said chambers may be
ber, and the third passage leading from the sup
established or disestablished, a valve mechanism
ply chamber to the exhaust chamber, the distance
disposed in said wall structure for establishing
from
the outer end of said ?rst passage to that
and disestablishing said communications, said 65
end of the second‘passage more remote therefrom
valve mechanism when disposed in said wall
being equal to the distance from the outer end of
structure in a certain manner being operable to
said third passage to the other end of said second
control a communication between the ?rst and
passage, valve means in said passages effective
second chambers and to control in'a particular
way a communication between the second and 70 in one position to open communication between
the supply chamber and the delivery chamber
third chambers and when disposed in said wall
while closing communication between the deliv
structure in a reverse manner being operable to
ery chamber and the exhaust chamber and effec
control a communication between the ?rst and
tive in another position to open communication
third chambers and to control in a way opposite
to said particular way said communication be 75 between the delivery chamber and the exhaust
2,404,514:
7
8
chamber andto close communication between the ‘
supply chamber and the delivery chamber said
?uid in said supply chamber, so as to substantial
ly counterbalance ‘either the pressure of ?uid :in
valve means having a portion closing at all timesq
said delivery chamber as in said supply cham
communicationbetween the supply chamber and
exhaust chamber, and means for operating said.
beracting on said valve means, and means {croperating said valve means.
valve means from one position'to the other posi
8. A valve device comprising arcasing having a
Wall structure de?ning 'a ?rst chamber, a second
chamber and a third chamber, said. wall structure
having passages through which communications
between certain of said chambers may be estab
tion.
,7
V
'
7. A valve device comprising a casing having a
supply chamber, a wall structure within said cas
ingrde?ning and separating a delivery chamber
and van exhaust chamber, said wall structure be
ing so formed as to separate the delivery and .ex-V
lished and disestablished, a valve mechanism dis
posed in said wall structure ‘and operative for
, haust chambers from saidlsupply chamber, three (7
establishing and disestablishing said communi
axially aligned passages in said-wall structure, the "
cations, said valve mechanism when disposed in
' ?rst passage leading from the supplychamber to 15 said wall structure'in a certain manner being op
the delivery chamber, the second passage leading
erable to control a communication between the
?rst and second chambers and to maintain closed
from the deliverychambervto the exhaust cham
a passage between the ?rst and third ‘chambers,
ber,'and the third passage leading from the sup
and when disposed in said wall structure in a re-'
ply chamber to the exhaust chamber, the distance
verse‘ manner being operable to control a com
from the outer end of said ?rst passage to the end
more remote therefrom of said second passage be».
munication between the ?rst and third chambers
ing substantially equal-to the distance’ from. the
and'to maintain closed the passage between said
outer end of said third passage to the end more
?rst and second chambers, said valve mechanism
being at all times substantially balanced by the
remote therefrom of said second passage, valve
?uid pressure acting thereon in opposite direc
means operative to open one of ‘the ?rst two pas-V
sages while closing the other, means included in
the valve means for maintaining the third pas
sage closed and being'subject to the pressure of
tions
endwise.
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‘GLENN T. NECCLURE.‘
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