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Apr-i129, 1947.
F. A. BARNES
2,419,702
QUICK. DETACHABLE COUPLING
VFiled Aug. 5, 1944
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Patented Apr. 29, 1947
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2,419,702
UNITED STATES PATENT OFFICE
2,419,702
QUICK DETACHABLE COUPLING
Frederick A. Barnes, Cleveland Heights, Ohio
Application August 5, 1944, Serial No. 548,175
2 Claims.
1
This invention relates to a quick detachable
coupling for connecting together generally cylin
drical parts and is particularly useful for pro
viding a leak-proof joint between tubular ends.
It is an object of the present invention to pro
vide a quick detachable coupling which consists
of a minimum number of parts adapted to be
easily machined out of bar stock and one which
provides a very positive and dependable connec
tion.
The construction and advantages of my im
proved device will be apparent from the accom
(01. ‘285-177)
are provided two lugs I2b extending radially in
wardly at diametrically opposite points and
adapted to lie on that side of the ?ange IIb far
thest away from the abutting ends of the cou
pling as clearly shown in Fig. 4. These lugs are
In the drawings,
adapted to pass through the recesses I I0.
It results from the above-described construc
tion that when the parts III and I I are placed
with their ends abutting as shown in Fig. 4,- the
tongues I Go enter the recesses H0 and prevent
relative rotation between the parts I0 and II.
The sleeve I2 has already been threaded so as
to engage the threads 10b and I2a. The part H
is moved into abutting engagement with the part
Fig. 1 is a side elevational view of one form of
end of the sleeve I2 as shown in Figs. 2 and 4,
manying description, and the essential features
will be summarized in the claims.
my coupling device;
Fig. 2 is an exploded view of the parts of Fig. l ;
Fig. 3 is an enlarged transverse sectional view
It by passing the ?ange IIb into the right-hand
this movement being possible because the lugs
I 2b are adapted to pass through the recesses I I0.
With the parts in the position of Fig. 4, relative
20 rotation is produced between the sleeve I2 and the
Fig. 4 is a sectional view taken along the line
interengaged parts ID and I I which are compelled
4—4 of Fig. 3;
to rotate as a unit because of the engagement of
Fig. 5 is a transverse sectional View enlarged
the tongues I00 in the recesses No. This rota
taken along the line 5—5 of Fig. 1; while
tion of sleeve I2 in a direction to cause the inter
Fig. 6 is a transverse sectional view taken on
engaging threads to move the part II] toward the
the line 6-6 of Fig. Kl.
taken along the line 3-3 of Fig. 1;
While some of the features of my device are
part II causes a ?rm engagement between the
abutting ends of the parts I0 and II because the
adaptable for connecting solid or tubular parts
lugs I2b now lying behind the ?ange I Ib prevent
for various purposes, I have chosen to illustrate
movement of the part II away from the part I0.
the same as used for connecting two generally
In
actual practice, a very slight rotation of sleeve
cylindrical tubular parts such as are found, for
I2 serves to ?rmly connect the parts It] and II.
instance, in a compressed air line. By this illus
While it would be possible to provide a ma
tration, however, I do not intend to limit the use
chined joint between parts I0 and II, for some
of my device.
purposes I prefer to provide a sealed joint at this
In the various views, It] and I I represent the
two parts to be coupled while I2 is the coupling 35 point for the handling of compressed air or other
?uids. To this end, as best shown in Figs. 4 and
sleeve. The part Ill has an enlarged cylindrical
5, I insert annular gaskets I3 of natural or syn
portion Illa which carries the coarse thread IOb.
thetic rubber or other suitable sealing material
At its coupling end, the part I 9 has diametri
in proper seats in the abutting ends of the parts
cally opposed ears I?c extending parallel to» the
40 I0 and I I. Then when the parts are coupled as
axis of the member I I} and toward the other part
previously described, the abutting gaskets I3,
I I which is to be coupled.
which project beyond the metal parts I0 and II
The part II has an enlarged cylindrical por
as shown in Fig. 4, are forcibly compressed to
tion Ila terminating in a ?ange IIb extending
gether
to provide a leak-proof joint at this point.
radially outwardly and interrupted to provide the
Preferably I utilize a cheaply constructed de
diametrically opposed recesses II c which are
vice for holding the parts I0 and I2 in more or
adapted to receive the tongues I?c in a relatively
less
permanent engagement so that when the
snug ?t. When the parts Ill and II are to be
part I0 is connected to one hose and the part II
coupled, the tongues I90 and the recesses IIc
coact to provide means for preventing relative 50 to another, there are no loose parts to be lost.
This means for securing the parts I0 and I2 to
rotation between the parts In and II when the
coupling action takes place.
gether consists in the striking out and peening
over a small tongue I20 from the metal of sleeve
The sleeve I2 is provided with an internal
I2 at the end of the sleeve near the shoulder of
thread I2a adapted to coact with the thread I?b.
the portion Illa so that the tongue I20 prevents
At the end of the sleeve nearer the part I I, there 55
unscrewing of the part III out of the sleeve I2.
2,419,702
3
4
ularly about its circumference, a plurality of
Preferably, also, I mill out a portion of the thread
tongues extending from the end of a second of
10b as shown in Fig. 6 to provide a shoulder M
said parts substantially parallel to its tubular
so arranged with respect to the tongue I20 that
axis and adapted to enter said recesses when
when the part II] is screwed out of the sleeve l2
said ends abut, a sleeve surrounding said abut
until the shoulder l4 strikes the tongue I20, the
ting ends, said sleeve having an internal diam
tongues I00 will be aligned with the lugs 12b so
eter snugly embracing the outer circumference
that as the part II is moved endwise into the
of said ?ange, interengaging threads on said
sleeve 12, the recesses He will ?rst pass over the
sleeve and said second part, and a plurality of
lugs I21) and then into engagement to receive
lugs extending radially inwardly from said sleeve
10
the tongues lilo. Thus the shoulder l4 and the
and adapted to pass through said recesses to
tongue 12c serve to automatically position the
lie in back of said ?ange, whereby with said
parts for easy engagement after which the min
tongues, lugs and recesses alined said ends may
imum rotation of sleeve !2 couples the parts In
be placed in abutting relation with said lugs on
and l I. Knurling may be provided if desired on
the sidegof said flange away from said abutting
the outside of sleeve l2 to aid in its rotation.
ends, and rotation of said sleeve will move said
The screwing of the part it! into and through
abutting ends tightly together, after which said
the sleeve I2 is possible to only a limited extent
sleeve prevents angular play of said ?rst part rel
and is hindered when one of the tongues Hic
ative to said second part.
strikes one of the lugs l2b. I have thus prevent
2. The combination of claim 1 including co
ed loss of any of the parts when the device is 20 acting stop means on the end of said sleeve re
connected to the ends of a hose to be coupled or
moved from said lugs and on the end of said
in any similar application.
threaded second part farthest from said abutting
Note that my improved coupling may not be
ends, said stop means effective upon backing off
accidentally disconnected as by dragging of a
the sleeve on the threads of said second part to
compressed air hose over the floor. Note also
aline said tongue with said lugs.
that I do not rely ‘upon a packing adapted to be
expanded by the compressed ?uid but instead I
FREDERICK A. BARNES.
use a packing or sealing material [3 which is pos
itively compressed by the parts of the coupling.
What I claim is:
1. In a quick detachable coupling, two tubular
parts to be coupled in axial alinement with their
ends abutting, said parts having their inside di
ameters equal, an annular ?ange extending ra
dially outwardly near the end of a ?rst of said
parts, there being a plurality'of recesses extend
ing axially through said ?ange and opening ra
dially outwardly of said ?ange and spaced reg
REFERENCES CITED
The following references are of record in the
file of this patent:
UNITED STATES PATENTS
Number
Name
Date
1,238,218
Thompson _______ __ Aug, 28, 1917
809,746
Rhoads _____ _'______ Jan. 9, 1905
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