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Патент USA US2603451

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July 15, 1952
Filed April 13 , 1946
Fig 1
July 15, 1952
Filed April 13, 1946
J’* m1BM
at’. 31%;‘
Patented July 15, (1952
> Thomas
bison, Houston“;
I Application April 13, 1946,;seria1No._.6e2,013-' I
<°l~ we
.1 2
v The inventionrelates to agate valvewhich is
the gate; housing showing’ the gate 'rnember ‘in
particularly arranged to lock'thelgatein closed
*elevationandin closed position;
position by moving the gate transversely of the
in closedposition by being wedged or closely
Fig. 4 is a section taken on the line 4-7-4 of
Fig. 3 showing a top‘ view looking down on the
gate to illustrate the wedge shape thereof..
Fig. 5 is a perspective view of the follower yoke.
Fig. 6 is a sectional view similar to Fig. 3
?tted against the seat. Such sealing actionhas
.withjthe, gate ‘member broken away to illustrate
flow passage.
In; the operation of gate valves, it is impera
tive that the ‘gate membervform a complete seal
the connection for effectingvertical movement
heretofore been obtained by gate memberswhich
are vertically wedge shaped andby gatermem
-of the gate.
In Fig.- 1 the valve housing 2 is hollowto pro
~vide the valve chamber» 3. The upper end of
bers which are split so as to bewedged apart but
‘the present invention comprises a gate member
this housing is closed with a: bonnet 4 which ro__
tatablysupports a non-rising valve stem 5 turned
byawheel '6. A suitable packing l ‘enclosing a
stem Sis provided to prevent leakage while the
bolts _9 .a?ix the bonnet to the housing. The hous
ing has the flow passage l0 therethrough which
which is wedge shaped transversely of the ?ow
passage and a mechanism provided for moving
the gate transversely into wedging position after
it has been moved vertically to close the flow pas
It istherefore oneof the objects of the inven
tion to form a gate member which is wedge
shaped in transverse ‘section in combinationwith -._
ja‘mechanism to move vthe gate laterally asit
moves into closed position'..
‘ .'_Another object of the invention is’to provide
agate member with transverse wedge shaped
gate seats and gate member‘ so thatthe gate
'may move vertically toopen. or closed position
' and be moved transversely to sealing and unseal
ing position.
" [Still another object of
the invention
is to pro
vide a gate member 'wherein'the gate is moved
vertically and then wedged byv lateral movement
at the end of the vertical movement to lock the
gate in either open or closed position.
Still another object of the invention is to pro
vide _a_ yoke for gate members which will be
wedged laterally as the gate moves to either open
or closed position.
for push to move a gate member laterally in seal
_, ing and-.unsealing the gate‘member.
...-.Another_ object’ of the invention is to‘provide
‘aflost motion arrangement for a follower'yoke in
.orderéto move a gate. member transversely to'ac
crossesthevalve chamber.
Inorderto provide a seat and vsealing area for
the gate member I |,,,the housing is recessed at [3
to receive the seat plates 14, one of which is pro
vided oneach side oflthegate. chamber at the flow
These seats [4 are ‘of peculiar shape as best
seen in Fig. 4 in that one edge of such seat as I5
is rather thin in transverse section while the op
posite edge is considerably thickened at [5 to pro
vide abeveled or taperedface I‘! as seen in trans
verse section in Fig. 4.
With this arrangement, a’ tapered-or wedge
shaped ‘ opening- I8 is provided to receive the
transversely wedge shaped gate l I. The gate in
turn has the inclined or beveled faces l9 and 20
on opposite sides thereof to engage the respective
faces ‘I ‘I of the seat members.
The . gate has the opening 2| therein :which
Still another. object-of the invention is to pro
vide a mechanism for applying an eccentric pull
Qcdn'i'pIish sealing action thereof.
' -
@f'Another object of the invention is to provide a
{transversely wedge shaped gate member which
"is in constant engagement with the seat but
--may be‘raised to the position of Fig. 2 into align
mentiwith the‘?ow p'assag'el? or‘ it maybe moved
40 into the position of Fig. 3 so that the blank space
22 of the gate intersects the flow passage‘ and
closes the same.
; As seen-in Fig. l, the gate is provided with a
recess 23 which receives the lower end of the
' threaded portion 24 of the stem 5.
" In order to obtain the desired sealing action
' of the gate member in both open and closed posi
tion so as to prevent leakage out of the ?ow
which can be wedged laterally in the full open
passage, a follower yoke 25 is best seen in Figs.
or full closed position.
50 3 and 5 and this yoke is arranged to have the
Other and further objects of the invention will
collar 26 thereof threadedly attached to the
be readily apparent when the following descrip
portion 24 of the stem 5. This follower ‘yoke
tion is considered in connection with the accom
panying drawings, wherein:
Fig. l is a vertical sectional view taken longi
tudinally of the valve.
Fig. 2 is a vertical sectional view taken trans
extends radially at 21 and longitudinally along
55 side of the gate at 28 so that it lies in the en
larged recess 29 which is part of the gate cham
ber. This follower yoke has a stud 30 projecting
from the inside surface thereof and which stud
versely of the valve housing and showing the gate
is positioned in an opening 3| in the side of the
member in elevation and open position.
Fig. 3 is a transverse sectional view through 60 gate member. Particular attention is directed
to the fact that the opening 3| is. somewhat’
larger than the stud ‘38 so that there may be
rigidly with the valve and the opening or recess
23 is reduced to provide a threaded area 35 which
receives the threaded portion’ 24 of the stem. In
considerable lost motion between the movement
this. manner .thelgate will: negotiatewa combinaa
tion downward .and lateral movement as it ap
' of the yoke- and the movement of the gate. The
collar 26 and the studj30 providefor‘a push-‘pull
movement on the gate;
proaches the full open or the full closed position.
The‘ outer face 32 of the follower yoke'is in.‘
7 .Broadly the invention contemplates an ar
the form of an inclined or beveled face which is ' i'rangement whereby the gate valve member may
beveled outwardly from the center point 33 so as ' .be readily moved vertically to open and close
' to be engaged by a cam 34. This cam is sup’ 10 the valve but wherein it is moved transversely
1 ported upon a hollow seat 35 threaded‘in'to the‘ ' to effect sealing and locking ofthe valve in eithe
opening 36 in the side of the valvehousing; .This. ~ ;' :of such positions.
What is claimed is:
,hollow seat is enclosed with a cap 31 and. the
"1."A"gate valve including a housing, a gate
cam face 38 is urged toward the beveled faces
32 by ‘a coil spring 394- It seems obvious'that 15 chamber therein, a transversely tapered and
by removing" the cap 31, the seat-35 may-Ybe ad- ‘
longitudinally movable-valvejmemberi a ‘stem to
justed as desiredrlandla'di?erent strength of
spring may- be» applied. Adjustment ‘of :the- ‘cap
open land icloseisaid * ‘gate; by longitudinal ‘ move
'31 ‘may: also be ‘used-1 to adjust the pressure’ upon
gate and actuated by said stem to; wedge ‘said
the spring.
‘gate-laterally of its longitudinal movementdn
open-or closed position,-5a"beveled face-‘on said
ment, and means including'a :yokeengagmgsam
In actual operation when/theyalve is in open
positionas seen- in- Fig.-v 2jturn‘ing of the ; stem
yoke,- a cam in said-housing on“ which said yoke
will cause the rouowes- yoke toistartfitsi'ini-tial
beveled face will ride 7to move saidgatelaterally
movement downwardly.
and vlaterally wedge said valve; memberL in "said
This initial movement moves‘ the upper edge
housing,v said yokeja- threaded connection of said
'of-‘Athe stud-30 ‘away fromthe upper edge of the
‘openings’! so ‘that the‘s'tu'd moves'downwardly
yoke to‘ said ‘stem, andlost motionen'gaging parts
between said yoke and gatev ‘whereby said‘gate
the recess. ‘This downward movement does
yoke vmoves ?rst to takeup' said last motion and
not 'cause'the "gate member ll't'oYmoveTbutIit
does move the cam" face 3'2Irelative to the-cam .30
3'4. " This Slight vertical movement of. coursei'ree
continued movement in ’ the ‘same direction will
thereaftermovesaid gate.
I 2; Ina'gate valve avertically movablelaterally
leases‘the yoke- from the~10cked positioniand
wedgable gate, a housing, a gate chamber across
the‘ flow passage, a'thr'eaded'stem "to ‘move said
(‘permits it to vmove ‘out. ‘of ‘the- wedge between
the faces l9 and 20 oftherse'at. 5 In other Words,
gate; wedge seats tapered‘ transversely‘ofjthe
path of movement ‘of said gate, and-"cooperating
the gate- is loosened or'unlock'ed - from its-wedged
position. 'If'the stud v‘30'enga'gesthe' lower por;
means‘ carried by said ‘gatev includinggajfyoke
'ti'on ‘ore-bottom of J the ‘opening 3 I; it’ will tend‘ to
threaded on said stem‘, warm in saidhousing a
knockv the valve vloose ~if it remains inwe'dg‘ed -
lateral beveled portion" on ‘said‘ yo'ke'jengaging
position. This rap or 'push on the valve'is of
said cam ' to, ‘shift- said gate 'l'ater'allyof itsv lon'—
. course at the outeredge or the wedged area and 40 gitudinal movement to‘wedgein saidse'ats; ‘ and
tends‘ to apply ‘an eccentric pressure. tending to
a-- lostmotionfconnection ‘between said‘, gate ‘and
pry ‘I the valve out-"of-the wedge seat. *As-"thle
yoke ‘including interengaging parts "so "that ‘said
"downward movement continues,*thel gate will be
stem ?rst moves saidyoke and saidlost'motion
‘moved downwardly t6the-position'of‘Fig.-‘3 and
‘connectionthereupon moves ‘said gate vwhen‘ said
as the upper inclined surface-32 oflthelfollower 45
yoke moves‘against the carriz'34,lithe gate .andl‘thle
yoke will again-- be vwedged transverselyiin?the
closed position of'Figi; 3. It ‘seems obvious? that
; ' ' ..THOM'AS' AJOLS‘ON. f
' the yoke may i have sufficientv tilting --action"due
to’ 1 ‘its bell crank‘ :sh'aft- sol thatv the" 'threa‘dsl-in 50'
the collar 26 will notnbind’ uponirth'e‘stemd5.
continued rotationo? the stem~5~will lift the
r v
Fig. 6 shows aj'slightly-fmodi?ed form wherein
a laterally extending ?ange??ahas- the double '
beveled surface 4| thereon. to .engagegwithlthel
cam 34. the same as the ‘follower yoke 25. . In
.Fig. _6,‘ ‘however; this cam surface is 1 formed
gages the- opening'f?. This'initial movement
will release-e the» wedging- action and‘ thereafter 155
' The followingv references are .of ,recordin-Zthe
?le‘ of this patent:
. wnentne gate is again itobe openedfth‘e'iyoke
only '1 will 5.‘ move upwardly until the" stud 30* en
gate to open position.
yoke executes vertical ‘movement, due tofsaid Jste'm
an‘dilateral ‘movement {due to "said bevel‘and'cam.
6 i.)
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