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Патент USA US2111956

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March 22, 193.
Filed Jan. 27, 195'?
“ ‘
‘19 5% 6
Patented. Mar. 22, 1938
‘ Everett E. Baldwin, Elmira,,N. Y., assignor to
Eclipse MachinerCompany, Elmira, N. Y., a
corporation of New York‘ a,
Application January 27, 1937, Serial-No. 122,599
I ' 8 Claims.
(01. 285-169)
Thepresent invention relates to automatic
adapted to seat in the groove 3 of _ the spud'I
couplingstand moreparticularly to a selfglocking
and self-sealing ‘quick detachable‘ coupling for
when the coupling members are joined.“
Means ‘for sealing the joint between‘ the cou
pling members I and 6, and.v for wedgingthe
locking member‘9 into‘its seat 3 in the'spud I is
.provided comprising a ?exible piston member I‘I
mounted in the part ‘I of the coupling ‘socket 6,
having a lip I2 adapted to be forcedby ?uid
hose adapted to convey ?uids under pressure.
-5 " Variousforms offquick‘detachable hose couf
plings have been developed in ‘which thefjpressure
‘of the ?uid being‘ conveyed serves to seal the joint
between the parts'of the coupling, and operate
pressure 1 in the coupling into intimate contact
with the end of the. spud I, and bearing against 10
i?iédbyQthedisclosure in the patent to Meyer a thrust 'washer I3. Fluid pressurein the cou
1,754,639 in which‘lthe parts of the coupling‘ are ‘pling serves also to actuate the piston member I I
H locking mechanism for the ‘members of the cou
‘ 10"pling, one‘ form of such coupling being exempli
‘ ‘ .loeked ‘together-‘bye contractile keying means
‘to cause the thrust washer I3 to wedge the look
which is forced into locking position ‘by means ing member 9‘ against an‘inclined shoulder I4 on
‘_ l5 operated'by the pressure of the ?uid transmitted; the‘ interior‘ of the‘ part8 of the socket whereby 15
but which may be ‘manually‘withdrawn when the the locking member is pressed ‘into the groove 3 '
and the coupling members are thereby securely
?uid pressure; isremoved from the joint. .
It is an object of the present invention to. pro
. .
. ‘vide a novel quick detachable coupling of the gen- ‘
‘20 eral type, described which is reliable andl‘emcient
‘in operation andfsimple and economical in con1
“ p
It is ‘another, object to provide such a device in
which the parts of ‘the coupling are automatical
According to the present invention, a releasing
member 'for the lock spring 9 is provided ‘in the
form of a sleeve I5 mounted on the spud I for,
sliding movement limited by the engagement of
alip I6“ on the sleeve against a shoulder H on
the‘spud. The sleeve I5 extends into proximity
with the groove 3 when the sleeve lsin‘ its re '25
y 25 1y looked upon bringing them ‘togetherinto ‘oper
ative relationship,‘ and -' are unlocked by (merely
tracted position, and the outer end of the sleeve
‘forcing them together more closely; I
_‘ _I‘t ‘is'a further object to'providefsuch a device
is bevelled as indicated at I8 to facilitate disten
tion of the lock spring 9 when it‘ is pushed out of
in which the unlocking means'does not “interfere
go-with the action of the locking means when‘ the
‘ elements of the coupling are. brought together.‘
Further objects and‘ advantages} will be appar
ent from the following‘ description taken inv con?
nection with the accompanying ‘drawing in
as‘ which:
Fig. 1 is aside elevation‘partly in section of a
preferred embodiment of the invention showing
the parts in coupled and locked position; »-
‘ ‘
the‘groove 3. A shallow groove I9 is formed in '
the periphery of the sleeve I5 adjacent its outer
end adapted'to receive the lock spring 9 and‘thus
yieldingly connect. the sleeve for longitudinal mo‘- ‘ 9
‘tion with the spring.
In the operation of the device, starting with
the coupling members I and I5 separated as illus
trated in Figs. 3 and 4, introduction of the spud
or nipple I into the socket 6 causes the cylindri
cal portion 2 of the nipple to penetrate the seal
ing piston II until the lock spring 9 snaps into
Fig. 2 15a similar view showing the parts in
40 the positions assumed when the coupling mem— the groove 3, whereupon the parts are securely '
joined. Fluid pressure applied through the cou
bers are unlocked‘ by being forced together; I
1 Figu3 is a side elevation partly in section of - pling acts on the piston I I to seal the joint by ex
the nipplexor spud ‘member of the coupling; and
Fig. 4 is a similar view‘cf the socket member of
45 the coupling.
Referring ?rst to Fig. 1 of the drawing, there I
is illustrated a ‘coupling comprising a nipple ‘or
spud member I having a cylindrical extension 2
provided with‘a circumferential groove 3 having
inclined walls 4 and 5.‘ A socket member 6 pref
v'erably formed of two interthreaded parts ‘I and 3
to‘. facilitate assembly, is adapted to receive the‘
spud I, and carries a contractile locking member
‘ 55 in the form of a coiled spring member 9 which is
pansion of the piston and prevent dislodgement
of the lock member 9 from‘the groove“ 3, by virtue
of the wedging action of the thrust washer I 3 and
inclined shoulder I4. It will be noted that when
the coupling members are joined, the sleeve I5
slides back to its'retracted position as shown in
Fig. 1.
When it is desired to sever the coupling, the
?uid pressure being removed, it is merely neces
sary to force the spud I further into the socket
6 as illustrated in Fig. 2, whereupon the thrust
ring I3 causes the lock spring 9 to ride up on the
sleeve I5 and seatin the groove I9 therein. This 55
to engage the locking member and con?ne it in
the groove, and means actuated by movement
of the spud into the socket beyond its normal
position for moving the locking member out of
expansive action of the lock spring is permitted
I by the ?exibility" of the piston “which permits
the socket 6 to move longitudinally su?iciently to
back the inclined shoulder ll away from the lock
the groove, said means comprising a sleeve on the
spring and thus permit the radial expansion
thereof. When the spud or nipple I is then with
drawn, the sleeve li-is initially prevented from
spud adapted to engage the locking member and
prevent its entering the groove during withdraw- '
moving therewith by reason of its yielding con- , al of the spud.
5. In a coupling, a cylindrical spud member
. nection with the lock spring 9 so that the sleeve
having a circumferential‘ groove adjacent one 10'
10 '. serves to bridge the groove 3 in the spud and end,
a socket member adapted to receive the spud,
prevent the lock spring from entering the groove.
,a contractile locking ring in the socket adapted
The spud I may thus be freely withdrawn, where
upon the parts assume their original positions as
to seat in said‘ groove, and a‘ sleeve slidably
Although but one embodiment of the invention
mounted on the spud adapted to receive the look
ing member when the spud is iorced'into the
has been shown and described in detail, it will
be understood that other embodiments are pos
sible and various changes may be made in the
sleeve being arranged to be held by the locking
member during the initial withdrawing movement‘
shown in Figs. 3 and 4.
socket beyond its normal locked position, said -
of the spud so as to bridge the groove and there
design and arrangement of the parts without de
by render the locking means} inoperative.
6. In a coupling, a cylindrical spud member
'20 parting from the. spirit of the invention as de
lined in the claims appended hereto.
having a circumferential groove adjacent one end,
a socket member adapted to receive the spud, a
ber'adapted to enter said socket, locking means contractile locking ring in the socket adapted to
(seat in said groove, and a sleeve mounted on the 26
including a movable element in' the socket ar
ranged to engage the spud and prevent with "spud for limited sliding movement relative there
drawal thereof, and means operable by movement to and having a shallow peripheral groove adapt
of the spud into the socket beyond its locked ed to receive the locking member when the spud
What is claimed is:
, _
1. In a coupling, a socket member, a spud mem
is forced into the socket beyond its normal locked I
position Ior,releasing'said locking means.
position whereby the sleeve prevents the locking 30
2. In a coupling, a socket member, a spud
member adapted to enter said socket, locking member from entering the groove in the spud
means including a contractile element; in the during withdrawal of the spud.
7. In an automatic hose coupling, a cylindrical
' socket arranged to engage the spud and prevent
withdrawal thereof, and means on said spud op ‘nipple having a circumferential groove adjacent
35 erable by movement of the spud into the socket one end, a socket member adapted to receive said
beyond its normal-‘position for distending the
contractile element and holding it distended dur
ing withdrawal of the spud.
nipple, a contractile locking ring carried by said
socket adapted to seat in said groove, ?uid-pres
sure operated means sealing the joint between
40 having a peripheral groove, a socket member
the nipple andvsocket and forcing the locking ring _ >
into its seat on the nipple, and a sleeve slidably 40
45 groove, means actuatedby movement of the spud
of the nipple.
3. In an automatic coupling, a ‘spud member
adapted to receive said spud, a locking member in mounted on the nipple adapted to receive the
said socket adapted to engage in said groove, said ' locking ring when the nipple is forced into the
socket having an inclined shoulder adapted to socket beyond its normal position, and to hold
engage the locking. member and confine it in the the ring distended during subsequent withdrawal
intov the socket beyond its normal position for
moving the locking member out of the groove,
8. A hose coupling including a nipple member
and a socket member, means operative upon in
troduction of the nipple into the socket to auto
rmatieally seal and lock ‘said members together,
moval of the spud. >
4. In an automatic coupling, a spudv member and means operable by further penetration of the
having a peripheral groove, a .socket member ‘nipple in the socket to unlock said members sub
adapted to receive said spud, a locking member stantially as shown and described.
in said socket adapted to engage‘ in said groove,
said socket having an inclined shoulder adapted
and means for bridging the groove to permit re
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