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Патент USA US2406483

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Aug. 27, 1946.
J, N, VANVEPPS
2,406,483
YOKE CONSTRUCTION FOR SELECTOR COCKS
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Filed Feb. 17,-1943
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Aug. 27, 1946.
_
J. N.‘ VAN EPPS _
2,406,483
You CONSTRUCTION Fon SELECTOR cooxs'
Filled Feb. 17, 1943
2 Sheets-Sheet 2
Patented Aug. 27, 1946.
2,406,483
UNITED STATES PATENT OFFICE
2,406,483
YOKE CONSTRUCTION FOR‘ SELECTOR
COCKS
John N. Van Epps, Cleveland Heights, Ohio, as
signor to Thompson Products, Inc., Cleveland,
Ohio, a corporation of Ohio
Application February 17, 1943, Serial No. 476,152
5 Claims. (01. v251-4)”
2
This invention relates to selector cocks or fluid
?ow control devices and deals especially with a
one-piece sleeve member serving as a means for
connecting the cook or device with either an op
erating pulley or an operating control rod as Well
as a lifter for the plug valve of the cock or device
and a stop member to position the plug or valve.
Speci?cally the invention relates to a yoke con
struction adapted to rotate the plug of plugetype ~
valves as well as relieve the spring tension on the 10
plug during rotation.
Heretofore yoke constructions for selector cocks
embodying a lifter arrangement for the plug of
such cocks have required many milling opera
tions. According to this invention, a yoke is now
provided that can be made by a minimum of mill
ing operations. The resulting yoke is stronger
the collar or ?ange is unslotted and can be seated
in an antifriction bearing to rotatably mount the
yoke in the selector cock housing.
' It is, then, an object of this invention to provide
a simpli?ed, inexpensive and strong yoke con
struction for selector cocks.
Another object of the invention is to provide a
yoke construction for selector cocks which can be
made by a minimum of milling operations.
\
_ A speci?c object of the invention is to provide
a yoke construction for ?uid flow control valves
which simultaneously serves as a lifter to relieve
spring pressure on the plug of such valves, to act
as a stop member for positioning the valve at
various desired ports during rotation thereof, and
a connector for an operating rod or pulley.
A still further object of the invention is to pro
than the previously known yokes and is much
vide a connector sleeve for plug-type valves hav
simpler in construction. a‘ Due to the decreased
enhanced contact area with the valve-oper
machining and milling operations it is, of course, 20 ing
ating means such as a rod, a pulley, or a universal
cheaper to produce.
joint.
.
The yoke of this invention is composed ofv a
A further object of the invention is to provide
sleeve having an outturned collar intermediate
a yoke construction for a selector cock which has
the ends thereof. The periphery of the collar can
four upstanding ?ngers of appreciable width de
be notched at spaced intervals for cooperating 25
?ning, with their inner faces, a receptacle for an
with spring-pressed plungers or detents to con
operating rod, and with their outside faces, a
trol the position of the yoke and thus control the
support for the hub of an operating pulley.
positions of the plug or valve driven by the yoke.
Other and further objects of the invention will
The sleeve has four slots extending inwardly from
be apparent to those skilled in the artfrom the
one end thereof to the ?ange or collar. These
following detailed description of the annexed
slots are located 90° apart and one pair of dia
sheets of drawings which, by Way of preferred
metrically opposed slots have concave or V
example only, illustrate one embodiment of the
shaped bottoms to act as cams on a pin carried‘
by the operating post of the plug valve so as to
On the drawings:
relieve spring tension on the valve whenever the 35
invention.
yoke is rotated.
a
’
Figure 1 is a top plan view of a selector cock
By this arrangement, spring
pressure can exert its full force on the plug valve
Whenever the valve is stationary but this spring
force is relieved whenever the valve is rotated
to a new position, thereby facilitating rotation of 40
the valve and decreasing wear on the seals of
the cock. The other pair of diametrically opposed
equipped with a yoke construction according to
this invention and illustrating the manner in
which this yoke construction can be connected
to a universal joint on the end of an operating
rod.
7
.
Figure 2 is a side elevational view of the selec
tor cock and yoke construction of Figure 1.
slots can either receive therein the ends of a pin
Figure 3 is a fragmentary side elevational view
on an operating member such as a rod, universal
joint or the like, or the tangs on an operating 45 of the yoke shown in Figures 1 and 2 illustrating
pulley.
Cotter pins passed through the upper
the manner in which the universaljoint and the
valve plug operating posts are connected to'the
- end of the sleeve to bridge this pair of slots will
retain the operating rod, universal joint or pulley
,
yoke.
in connected relation to the yoke. The slots in
Figure 4 is a side elevational view, with parts ‘
the sleeve, in effect, provide four ?ngers cooper 60 broken away and shown in vertical cross section,
ating to de?ne a cylindrical receptacle for the op
taken at right angles to-Figure 3.
erating rod or universal joint. The outer faces
Figure 5 is a top plan view of the yoke con
of these ?ngers are likewise cylindrical to de?ne
a rigid support for the hub of an operating pulley.
Figure 6 is‘a top plan view similar to Figure 1
The portion of the sleeve on the other side of 55
struction.
'
'
but illustrating an operating pulley mounted on"
2,406,483?
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3
Four upstanding ?ngers 2|i are thus provided
the yoke construction in place of the operating
universal joint.
between the slots. Each ?nger 2|i has a partial
cylindrical inner face and a partial cylindrical
'
Figure 7 is a vertical cross-sectional view, with
parts in elevation, taken along the line VII-VII
of Figure 6.
outer face.
,
.
The upper end of each ?nger 2 P3 has a straight
out thereacross providing, on opposite sides of
the sleeve, ?at bottom and flat sided recesses 2|j.
Holes 2|Ic are drilled through the ?ngers to ter
As shown on the drawings:
In Figures 1 and 2 the reference numeral [0
I designates generally a selector cock equipped with
minate at the flat side walls of the recesses 2|7'.
a yoke construction according to this invention.
As best shown in Figure 3 a universal joint 22
The selector cock ll] includes aqbody portion H 10 adapted to be rotated by a rod, such as 23, se
with a plurality oflaterally extending bosses |2
cured in one portion of the joint by means of a
having apertures therethrough adapted to receive
cotter pin 22, has the other portion extending in
pipes, tubes or the like. The body || provides a
the cylindrical recess provided by the ?ngers 2E1}.
frusto-conical well in which a frusto-conical plug
A pin 25 extends through the portion of the joint
15'
is rotatably mounted to selectively place the tubes . seatedin the ?ngers and has projecting portions
in the bosses I2 into or out of communication
with each other. The casing H has a square
outturned ?ange I3 with ‘holes adjacent the cor-"
ners thereof so that the casing can be directly
mounted on a support member such as a wall.
' The selector cocks of this invention are spe
cially useful to control the flow of fuel from the
various tanks of an airplane to the engine. The
?ange I3 is thus adapted to be directly mounted
ona portion of the airplane such as a floor or
wall of the fuselage, a wing portioruor the like.
with ?at sides extending into the slots 2 UL. Cot
ter pins such as 26 extend through the holes 21k
of the'?ngers tobridge the slots 21h and overlie
theprojecting ends of the pin 25 thus connecting
the universal joint member with the yoke mem
ber for co-rotation and preventing removal of
the universal joint member from the yoke mem
ber. The head of the cotter pin can be seated
‘against the ?at side wall of one recess 2U
while the other end of the cotter pin can be
spreadiagainst the other flat side wall of the
other recess 2 l7’.
mounted on top of the ?ange l3 but having its
As ‘best .shown in Figure 4, a post 2's‘ extends
periphery inwardly of the flange so as to leave
intothe yoke construction 2| from the bottom
30
the corner portions thereof fully exposed. This
endthereof and has a transverse pin 28 there
circular cover can project through an aperture
through projecting into the slots 2if. ‘A cotter
in the member on which the casing is mounted.
pin 29 can be’ passed through the pin 28' and top
The cover 14 has a central‘ dome portion Illa
end of the post 21 to hold the pin 23 in the post.
projecting upwardly from the ?ange IS. A plu
The pin 25 in the universal joint member can be
rality of upstanding bosses l5 are provided on
press-?tted into the member but it is desirable
the cover and receiver cap screws I6 for securing
to be able to remove the pin 23 from the post
the cover to the ?ange portion I3 of the casing.
to disconnect the yoke construction from the post
An upstanding circular collar I1’ is formed on.
and for this reason the pin 28 is not press-?tted
the upper end of the dome portion Illa of the
(into the post but is held therein by .means of a
40
cover and two hollow bosses l8 are'formed on the
removable cotter pin. The cotter pin 29 is read
dome to project above the collar |‘|. These boss
ily inserted through the slots 2|h ofthe yoke
The casing H is closed with a circular cover l4
portions receive spring-pressed plungers IQ for
member.
a purpose to be more fully hereinafter described.
As best shown in Figure 4, the collar |'| receives
a ball bearing 20 therein and the inner race ring
of this ball bearing, in turn, receives the yoke
congstruction2| of this invention.
A "
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'7
A heavy spring 29, as shown in Figure 4, is held
under compression between the cover I4 and a
spring retainer 3| carried on a thrust bearing
32 which is bottomed by a rectangular key mem-‘
ber 33‘ on the bottom of the post. The key mem
ber 33 seats into a slot in the top wall of the plug
'
'The‘yoke 2| is a hollow metal cylindrical sleeve
preferably composed of ‘a mild steel case-hard
35, to'rotate the plug therewith. The thrust bear
ened to resist surfacev wear and has a reduced 50 ing 32 can be of vcompressed graphitic material
end portion 2m snugly ?tting the inner race of
and normally thrusts against the top wall of the
the ball bearing 2|] together with a larger portion
plug to urge the plug into seating engagement
2|b providing a flat shoulder 2|c at the top of
in the casing ll. However, whenever the yoke
the reduced portion 2 la to overlie the inner race
member 2| is rotated the pin23 will be acted on
55
of the ball bearing 20.
by the V-shaped cam surfaces 2 lg at the bottom
An outturned cylindrical ?ange or collar 2|d
of the slots 2|)‘ and will climb these surfaces to
is formed on the sleeve intermediate the ends
raise the post and relieve the‘ spring thrust on the
thereof adjacent the upper end of the portion
plug 34 as shown in Figure 4. Thus the thrust
Nb and has ?ve V-shaped notches 2|e at equal
bearing 32 maybe lifted off of the top wall of
intervals around the periphery thereof to receive
the plug. As soon as the yoke member is at rest,
the spring-pressed plungers It so as to delimit
however, the pin 28'will slide down to the bot
rotation of the yoke member. The sleeve pro
tom of the slots 2H and the thrust bearing 32
jects for a considerable distance above the collar
will‘ again act on the plug to urge it into proper
2|d and has'a pair of diametrically opposed ver
tical slots 2|J‘ extending inwardly from the top
seated position in the casing I l;
2|d.
A pair of diametrically opposed slots 21h nar
rower than the slots 2|)‘ .extend inwardly from 70
the same end of the slots Zlf at right angles
thereto. The slots 2|)‘ and Elk lie on diameters
of .the sleeve at right angles to each other. The
slots 2|h are somewhat narrower than the slots
~ 2 If and extend down to the collar 2 | d.
.
'
A packing 35 can be provided in the cover
end thereof and terrminating in a V-shaped bot
tom 2|g adjacent the top of the collar or ?ange
around the post 2'! to prevent leakageroutof the
casing along the post. The packing is urged
against the shoulder provided’ by the cover l4 byv
means of a spring 36.
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I
From the above’ description it will be under-_
stood that the yoke member 2| serves as-a con
nection'means between the post 21’ and the uni»
1 versal joint 22 so that the rod 23rcan' be rotated
76 to operate the plug 34 whenever desired. Dur
2,406,483
5
ing rotation of-lthe- yoke member 2|, however,
spring pressure on the plug “is relieved as ex
plained above. The spring pressed plungers l9
will ride around the periphery of the collar -2ld
of the yoke member and will drop into the notches
2 le to locate the plug at various positions in the
casing II.
The post 21 projects into the yoke member 2|
and is held therein by the pin 28. Of course, the
spring 30 urgesthe pin 28 against the cam sur
faces provided by the V-shaped bottoms Zlg of
the slots 2 I f.
‘
a
_The yoke member 2| can be formed with but
three milling operations. Thus both slots 2 If can
driving member including a cylindrical stem and
having a driving interengagement with said plug,
a spring acting onvsaid' driving member to bias"
said plug into engagement with the seat, a sleeve
encircling said stem in relatively axially and ro
tatably movable relation and having a peripheral
bearing surface on the stem-encircling portion
thereof, a bearing supported by the casing en
circling said bearing surface and supporting the
sleeve rotatably, a radially projecting collar por
tion on the sleeve outwardly of said bearing sur
face and having delimiting notches therein, de
tents engageable in said notches, a portion'of the
sleeve projecting substantially outwardly beyond
_ .be formed by one milling operation, both slots 15 the collar portion and having bisecting slots
2lh and the notches 2H can be formed by a sec
therein, one of said slots having substantially V
ond milling operation including a central mill
shaped cam surfaces adjacent to said collar por
cutter for the slots 2th and side mill cutters
spaced laterally from the‘ central cutter for the
tion, a pin carried by the outer end portion of
said stem and projecting laterally therefrom to
notches 2H, and all the recesses 2le in the collar 20 ride said cam surfaces to be cammed axially out
2 id can be formed by the third milling operation.
wardly and move said plug driving member out
If it is desired to arrange the slots Zlh so that
wardly against the spring bias, a driver for said
the pin 25 of the universal joint 22 ?ts only in >
sleeve including laterally extending elements for
one position in the yoke, this pin can have pro
effecting corotation received within the remain
jecting ends of different widths and a fourth
ing slot, and retaining members secured" across
milling operation can widen one slot Zlh to ac
the outer end portions of said remaining slot.
commodatethe wide pin end which will not ?t
2. In a selector cock construction including a
into thefnarrow‘slot 2ih resulting from the sec
casing having a seat and a plug rotatable insaid
ond milling operation.
casing and engageable with said seat, a plug
. Removable cotter pins hold the assembly in 50 driving member including a cylindrical stem and
operative position and these cotter pins are read
having a driving interengagement with said plug,
ily removed to remove either the yoke from the
a spring acting on said driving member to bias
post or the universal joint from the yoke.
.
said plug into engagement with the seat, a sleeve
. Instead of driving the yoke member 2| by
encircling said stem in relatively axially and ro~
means of a universal joint operated from a rod
tatably movable relation and having a peripheral
23, as shown in Figures 6 and '7, the yoke mem
bearing surface on the stem-encircling portion
ber can be driven by a pulley 68. The pulley 4B
thereof, a bearing supported by the casing en
is composed of a stamped metal body member 4|
circling said bearing surface and supporting the
having a grooved periphery 42 adapted to receive
sleeve rotatably, a radially projecting collar por
a driving cord or belt. An upturned cylindrical 40
tion on the sleeve outwardly of said bearing sur
portion 43 is provided on the body member. A
face and having delimiting notches therein, de
disk 44 is spot-welded or otherwise secured to
tents engageable in said notches, a portion'of the
the central portion of the body member along
sleeve projecting substantially outwardly beyond
the inner face thereof and has a downturned
the collar portion and having bisecting slots
therein, one of said slots having substantially V
shaped cam surfaces adjacent to said collar por
tion, a pin carried by the outer end portion of
‘said stem and projecting laterally therefrom to
4T thereon adapted to be bent down into the slots .
ride said cam surfaces to be cammed axially out
Zlh of the yoke member. The cotter pins 26 ex 50 wardly
and move said plug driving member out
tend through the holes Zlk in the ?ngers of the
wardly against the spring bias, a driver for said
yoke member to overlie the tangs 41 and thus
sleeve including laterally extending elements for
mount the pulley in position. The bottom of the
effecting corotation received within the remain
downturned portion 45 of the pulley restson the
ing slot, and retaining members secured across
collar Zid of the yoke member.
'
the outer end portions of said remaining slot, said
The ?ngers 2lz‘ of the yoke member afford a
retaining
members affording a space axially in
substantial cylindrical bearing or mounting for
the slot for axial sliding movement'of the coro
the hub 46 of the pulley.
tation elements.
Thus the yoke construction of this invention
3. In a selector cock construction including a a
has cylindrical bearing surfaces on the inside 60
cylindrical portion 45 aligned with the cylindri
cal portion 43. The portions 43 and 45 provide
a central hub lit for the pulley 40.
The upturned portion 43 of the pulley has tangs
casing having a seat and a plug rotatable in said "
thereof for receiving a driving member such as
a universal joint‘as well as cylindrical bearing
surfaces on the outside thereof for receiving a
driving member such as a pulley.
casing and engageable with said seat, a plug
driving member including a cylindrical stem and
having a driving interengagement with said plug,
'
a spring acting on said driving member to bias '
It will, of course, be understood that various
said plug into engagement with the seat, a sleeve
details of construction may be varied through a
encircling said stem in relatively axially and
wide range without departing from the principles
rotatably movable relation and having-a periph
of this invention and it is, therefore, not the pur
eral bearing surface on the stem-encircling por
pose to limit the patent granted hereon otherwise
than necessitated by the scope of the appended 70 tion thereof, a bearing supported by the casing ‘
encircling said bearing surface and supporting the
claims.
sleeve rotatably, a radially projecting collar por
I claim as my invention:
tion on the sleeve outwardly of said bearing sur
1. In a selector cock construction including a
casing having a seat and a plug rotatable in said
casing and engageable with said seat, a plug
face and having delimiting notches therein, de
tents engageable in said notches, a portion of the
75
sleeve projecting substantially outwardly beyond
7
the collar portion and having bisecting slots
therein, one of said slots having substantially V- V
shaped cam surfaces adjacent to said collar por
tion, a pin carried by the outer end portion of said
stem and projecting laterally therefrom to ride
said cam surfaces to be cammed axially outward
ly and move said plug driving member outwardly
against the spring bias, a driver for said sleeve
said stem and projecting laterally therefrom to
ridesaid cam surfaces to be cammed axially out
wardly and'movesaid plug driving member out
wardly against the spring bias, a driver for said
sleeve including laterally extending elements for
e?ecting oorotation received within the remain
ing slot, and retaining members secured across
the outer end portions of said remaining slot, said
driver being a pulley comprising a'hu'b portion
comprising a stem extending into said outwardly
surrounding said sleeve and said laterally extend
projecting portion of the sleeve and having lat 10 ing
elements being inwardly turned portions of
erally extending pin means received within the
said hub.
remaining slot for effecting corotation of the
5. In a yoke structure adapted to connect in »
driver and sleeve, and means for retaining said
corotational assembly a driver and a spring
pin means against displacement from said re
15 biased plug driving member equipped with a stem,
maining slot.
7
4. In a selector cock construction including a
casing having a seat and a plug rotatable in said
casing and engageable with said seat, a plug
driving member including a cylindrical stem and
having a driving interengagement with said plug,
a spring acting on said driving member to bias
said plug into engagement with the seat, a sleeve
encircling said stem in relatively axially and ro
a sleeve adapted for relative axial and rotational
encirclement of the stem and having a peripheral
bearing surface on the stem-encircling vportion
thereof for encirclement by a bearing to support I
the'sleeve rotatably, a laterally projecting col
lar portion on the sleeve outwardly of said bear
ing surface and having delimiting notches there
in adapted to be engaged by detents, a portion of
the sleeve projecting substantially outwardly be
_ tatably movable relation and having a peripheral
bearing surface on the stem-encircling portion 25 yond the collar portion and having bisecting slots
therein; one of said ‘slots being adapted to receive
thereof, a bearing supported by the casing en
a laterally projecting pin on the stem and having
circling said bearing surface and supporting the
substantially‘V-shaped cam surfaces adjacent to
sleeve rotatably, a radially projecting collar por-‘
said collar portion for cooperation with the pin
tion on the sleeve outwardly of said bearing sur
face and having delimitingenotches therein, de 30 to move the plug driving member outwardly
against its spring bias, the remaining slot be
tents engageable in said notches, a portion of the
ing adapted‘ to receive oorotational elements of
‘sleeve projecting substantially outwardly-beyond
the driver in interengaging relationtherein and
the collar portion and having bisecting slots
to have element-retaining members secured,
therein, one of said slots having substantially V
shaped cam surfaces adjacent to said collar por 85 across the outer end portions thereof.
JOHN N. VAN EPPS.
tion, av pin carried by the outer end portion of
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