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Патент USA US2008650

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July 16, 1935.
A. J. WEATHERHEAD, JR
2,008,650
HOSE~ COUPLING
Original Filed Feb. l2, 1931
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2 Sheets-Sheet 1
.%
July 16, 1935.
2,008,650
A. J. WEATHERHEZAD, JR
HOSE COUPLING
Original Filed Feb. 12, 1931
2 Sheets-Sheet 2
l
grt/[email protected]
ALBERT-7T WEATHER/[email protected] IK
2,008,050
Patented July 16, 1935r
UNITED STATES
PATENT' OFFICE
2,008,650
_HosE vcomunic.
Albert J. Weatherhead, Jr., Cleveland, Ohio, as
signor to The Weatherhead` Company, Cleve
land, Ohio, a corporation of Ohio
Application February 12, 1931, Serial No. 515,258
Renewed April 9, 1934
8 Claims. (Cl. 285-84)
This invention relates to couplings and more be effective as a seal against leakage but will,
vspecifically to a novel structure for effecting a 'in addition, have sufficient strength to withstand
secure joint between a flexible hose and with tensional or torsional stress.
Another object of this invention is to provide
means such as the cylinder of a hydraulic brake
5 or a fitting interposed between such means and a union for joining a flexible tube to the cylinder
of a hydraulic brake or a fittingV wherein rotting
the hose coupling.
out or deterioration of the hose or tube resulting
It is very desirable to provide a fluid line as
sembly which will successfully withstand any from leakage of liquid into the body or walls of
‘
possibility of leakage of the force transmitting such hose, will be completely eliminated.
Another object of this invention lies in the 10
10 fluid, which might render the brakes inoperative
that are dependent upon such force for actua provision ofla coupling which can be either con
tion, and thus endanger the lives of persons re nected `directly to the cylinder of a hydraulic
lying thereon. Leakage is more often apt tov oc brake or to an adaptor or other fitting interposed
between said cylinder or a fitting and the hose.
cur at the coupling joints.
A further object of this invention is directed
This invention contemplates the provision of
a novel form of coupling that is adapted to be to the provision of an integral means for encom
included in the hydraulic braking system of passing the inner and outer walls of the hose or
automotive vehicles. It is adapted to form a
leakproof seal with the end of the hose as well
20 as a secure and non-leaking joint with a brake
cylinder or fitting to which it may be attached.
In its preferred form, the coupling consists of a
sleeve adapted to encompass the end of a flexible
hose, and a thimble insertable into such sleeve
-25 to cover and protect the end of the hose. The
external sleeve is compressed at a point inter
mediate its length to 4securely grip the hose to
prevent the withdrawal thereof. In addition, the
coupling is provided with a threaded stem adapt
30 ed to be screwed ‘directly into the brake cylinder
or into a fitting. Two joints are offered to accom
modate various types of fittings.
In some in
tubing as well as the cut end thereof to thereby
exclude the brake operating fluid from the walls
or the body of the hose.
Still another object of this invention is to pro
vide a coupling for a ñexible tube or hose that
will be effective to securely grip the hose to pre
vent the withdrawal thereof from such coupling
in addition to providing a leakproof connection 25
therebetween.
Still another object of this invention is to pro
vide a simplified and more integral fluid braking
system for vehicles wherein the use of. my pre
ferred form of coupling will result in the elimina 30
tion of a number of parts, such as adapters, which
have heretofore been found necessary with other
stances a shoulder on the body of the coupling at ' types of coupling devices.
’
Other objects and advantageous features of
the base of the stem forms the sealing surface, or,
35- in other instances, a conical seat at the end of this invention will be hereinafter brought out
the coupling conduit serves this purpose. How more in detail, reference being had to the accom
ever, in either instance a good leakproof joint is panying drawings wherein like figures of refer
ence- designate corresponding parts, and wherein;
Fig. l is an elevation of my preferred form of
In the braking system illustrated herewith, the
40 flexible hose part of the system lies between and coupling for one end of the hose showing the ex 40
iscoupled to the copper tube piping system car ternal appearance thereof.
Fig. 2 is a vertical longitudinal section through
ried on the sprung part of the vehicle at one end
and to the brakes themselves or to an auxiliary a preferred form of coupling for the other end of'
obtained.
0
-
piping system which is mounted on an unsprung the hose and a portion of the cylinder of a hy
draulic brake illustrative of the manner in which 45
45 part of the vehicle. The hose coupling at the end
adjacent the sprung part ofthe vehicle is se
cured to the chassis frame and in the embodiment
of my invention shown herein this coupling serves
the triple function of engaging the copper tube,
50 engaging the rubber hose and also engaging a
part of the vehicle frame.
Included among the objects of this invention
is the desire to provide a union for joining a
flexible fluid conducting hose or tube and a ter
55 minal of any nature whatsoever that not only will
the outer sleeve of the coupling is compressibly
reduced centrally to clamp the cut end of the
tube.
_ Fig. 3 is a vertical longitudinal section of the
coupling illustrated in Fig. 2 with the various
parts in position prior to the compressing of the
external sleeve.>
Y
Fig. 4 is a. detail partly in section of a preferred
form of internal sleeve member for enclosing the
out end. of the tube.
v
55
2
2,008,650
Fig. 5 is a detail partly in section showing a the end of the thimble, which illustrates that it
modified form of internal sleeve.
is of importance that a good seal be established
Fig. 6 is a layout of a hydraulic brake system else fluid leakage occur.'
'
'
To Join the hose to the coupling E, the sleeve I
Fig. 7 is a. detail of one of the front wheel is rolled or spun inwardly at some point interme
brakes of the motor vehicle illustrated in Fig. 6, diate the ends thereof, preferably at a point just
showing the part that my coupling plays in con beyond the end of the skirt 6, as shown in Fig. 2,
necting a flexible tube between the brake cylinder or at a point intermediate the length of the skirt
oi’ a motor vehicle.
and the main fluid line.
Fig. 8 is a detail illustrating the use of my cou
'
where the cap of Fig. 5 is employed, as shown in
Fig. 9, so that as the sleeve is pressed inwardly, 10
plings between the T-connection of the lateral the skirt will also be pressed inwardly and a re
fluid for the rear wheel brakes and the main fluid duction in diameter effected at the end or at a
line.
point in rear of the end if the thimble of Fig. 5
Fig. 9 is a section taken on the line 9-9 of is employed.
'
'
Fig. 8.
When this operation is completed, assuming 15
Referring now to the drawings, I have shown in that the thimble of Fig. 4 is employed, it will be
Figs. l and 2 and Fig. 9 two coupling devices des found that the hose will be compressed between
ignated respectively E and F. The coupling de the outer sleeve and the nipple at a poinif behind
vice E constitutes the preferred form of coupling the end of the skirt. Further, the hose will be
and will be dealt with first.
¿ compressed between the nipple and the end of the
20
This coupling may be machined from bar stock
and includes a sleeve I, the inner walls of which
define a chamber having _a bottom shaped in the
form of the frustrum of a cone. The bottom of
this chamber is bored to provide a fluid -passage 3
in a. threaded stem 2, the outer end of the stem
being counterbored to form a flared end 4, adapt
skirt. A seal Will also be effected between the
sleeve I and each of the annular rings 8 formed
on the exterior of the skirt. A seal will further
be produced between the skirt and the coupling
along the circumferential line Where the radial 25
face 9 of the thimble abuts against the bottom oi
the conicalseat 5. If the cap of Fig. 5 is em
ed to co-operate with a conical seat 4I formed at ployed, the zone of greatest radial reduction will
the bottom of a threaded chamber 5U, Fig. 9, in a occur at a point intermediate the length of the
fitting 39.
40
45
50
55
60
-
sleeve.
.
The sleeve I is adapted to encompass and em
When the sleeve I is rolled inwardly, a radial
brace the cut end of a hose A and the union and inwardly directed pressure is effective to
therebetween is established by reducing the diam squeeze the hose between the sleeve and the nip
eter of the sleeve at some point intermediate its ple I0. The hose between this zone of pressure
length, preferably by a process of spinning or roll and the radial face 9 of the thimble expands Ia
ing, as described and claimed in my Patent No. dially as well as longitudinally and is compressed
2,000,680, issued May 7, 1935. Before the cut end against the radial wall of the thimble which sets
oi’ the hose is inserted in the sleeve, a thimble is up a further seal between the hose and the thim
inserted thereover to protect the exposed end of ble. In addition, the pressure exerted to roll the
the hose from the deleterious effect of fluid seep
sleeve I inwardly is also effective to force the
age. The cup is also effective to produce a seal thimble forward to produce the seal hereinbe
with the sleeve I further effective to prevent fluid fore mentioned between the radial wall 9 and
under pressure from seeping between the walls the wall of the flared portion 5. It will be readily
and entering the cut end of the hose from behind. appreciated that a seal is effected between the
More particularly, the thimble comprises a tu coupling member I and thimble that will preclude
bular skirt portion 6 provided with a plurality of the leakage of fluid under pressure therebetween
external grooves 'l spaced by annular rings 8 that even though a considerable head is built up against
are effective to produce a seal with the inner sur the radial part 9 of the thimble.
face of the sleeve I in a manner to be hereinafter
Referring now to Fig. 9, particularly to the cou
described. 'I‘he thimble is also provided with a pling shown on the left hand side thereof, it will
radial wall 9 that has an integral nipple I0 cx be noted that this coupling differs from the cou
tending into and beyond the end of the skirt 6. pling E in that the thimble is dispensed with.
Hence, when the thimble is placed on the cut end This coupling, designatedby F, is intended to be
of the tube, the nipple 4III embraces the wall of joined to the opposite end of the hose and Where
the hose passage, the sleeve 6 encompasses the this hose is employed'with a unit of a hydraulic
external surface of the hose and the cut end abuts braking system, extending from the sprung part of
against the radial Wall 9.
the vehicle to the unsprung part, this particular
A slightly modified form of sleeve is shown in coupling device is intended to be attached to a
Fig. 5, wherein the skirt portion 6 is substantially bracket on the frameof the vehicle, whereas the
twice the length of the skirt shown in Fig. 4, and other coupling E is intended to make a connec
30
35
40
45
50
55
60
the nipple IUa differs slightly over the nipple I0 tion with the fitting 39 hereinafter referred to.
by the provision of _a plurality of annular barbs
The coupling includes the sleeve I, the bottom
I I adapted. to prevent the withdrawal of the cap of which is concaved as shown and is bored to
after it has been placed on the cut end of the provide a conduit for the reception of a headed
65 hose.
stem I9. 'I‘he head of the stem I9, indicated by
Referring to Fig. 3, I have shown the hose A I8, lies at the bottom of the threaded chamber
with the thimble disposed on the cut end thereof I 6 formed in the threaded stem 2. A male mem
and the whole inserted in the sleeve I with the ber I5 having a flared conical end I1 is adapted
radial face 9 of the thimble abutting, along its to be sleeved- on a tube M having a flared end
70 marginal edge, against the conical bottom of the adapted to be compressed against the seat I8.
70
sleeve. It will be noted at this point that a pocket
The nipple I9 extends into the area defined by
of considerable area is formed ahead of the radial the sleeve F and is provided with barbs 20 adapt
face 9 that, when the device is operatively con ed to engage with the hose A and to prevent
nected with a ñuid transmitting system, offers withdrawal thereof. The hose is secured to the
75 means for building up a considerable head against coupling member by inserting in the sleeve I with
75
2,008,050
3,
the cut end of the hose pressed ñrmly against are claimed in my divisional application Serial
the bottom thereof. The sleeve is then rolled at No. 26,932, filed June 17, 1935.
I claim:
^
,
some point intermediate its length to a reduced
1. -In a coupling for the end of a flexible rub
diameter and the hose is compressed between the
sleeve and the nipple. Here, the longitudinal ber hose having a fabric body portion, the com
pressure set up in the hose between the zone of bination of a member comprising a tubular part
radial pressure and the bottom of the chamber insertable within the bore of the hose and a
Iformed by the sleeve is effective to force’the cut sleeve part encompassing the exterior of the end
end of the hose firmly against the conical bottom of the hose, said tubular part being at least as
long as said sleeve part, and a disc part integral
10 to establish a. tightseal therebetween.
As for applying my coupling to the hydraulic ly formed with said first named parts, and means
brake system of an automotive vehicle, I-have including at least a portion of the body -oi! the
shown in Fig. 6, a layout of such system and have coupler bearing upon and pressing inwardly the
designated the flexible tube connection to which said sleeve part of said member and gripping
15 my coupling is joined by the letters B, C and D. the hose end thereby, whereby fluid is excluded
The tubes at B and C connect between the main from the end of the hose.
2. A hose coupling including a coupling head
fluid line and the cylinder of the brake drum,
whereas the tube D connects across the main line having a sleeve the walls of which define a cham
and the lateral conduit supplying both rear wheel ber having a conical bottom, a cup adapted to lie
within said sleeve, said cup having a skirt vadapted 20
20 brakes.
To more clearly bring out the manner in which to encompass a hose and a radial wall against
my couplings are incorporated in the fluid sys which the end of said hose abuts, said sleeve
tem, I have shown an enlarged detail of one of being adapted to be compressed on said skirt to
the front wheel brakes and the flexible tube B. seal said skirt against said hose and to seal said
cup against the bottom of the chamber defined. 25
closing the brake cylinder 32 mounted on the by said sleeve and compress the end of said p
apron 3|, Fig. 2. I preferably employ the type hose against the radial wall of said cup.
3. A hose coupling including a coupling head
of coupling designated by the letter E and shown
in Fig. 3, for the drum end of the tube end. As having a sleeve integral therewith, a cup insert
30 will be noted, the threaded stem 2 is screwed into able in said sleeve and adapted to encompass a 30
a threaded aperture in the radial face 33 of the hose, said cup having a skirt and an integral
cylinder 32. A seal is effected between the cou radial wall, said wall having an integral nipple
pling and cylinder by.placing a gasket 34 on the vlying within the hose passage and extending be
yond the end of the skirt, the skirt being pro
stem 2.
The opposing end of the tube is connected to vided with a plurality of annular rings, said
35
the main _fluid system by means of the coupling F` sleeve being adapted’to be compressed on said
shown in Fig. 9. The threaded stem 2 is inserted skirt to seal said skirt against said hose and
through an aperture in an L member 35 secured compress said hose against said nipple, said skirt
to the frame and the nut 36 screwed up tight being longitudinally compressed against the cou
25 The numeral 30 designates the brake drum en
40 thereagainst to clamp the body of the L surround
ing the aperture between such nut and the shoul
der 31 of the coupling.
The flexible connection D between the hy
draulic brake line and the lateral conduit sup
plying the rear wheel brakes is best shown in
Fig. 9 wherein the tube is connected to the main
line by means of the coupling F. This coupling
pling head.
40
4. In combination, a hose, a coupling therefor
including a coupling head having a sleeve integral
therewith, a cup insertible in said sleeve and
adapted to encompass the hose, said pup having
a skirt and an integral radial wall, said wall hav
ing an integral nipple lying within the hose pas
sage, said sleeve being compressed on said skirt
is mounted in an aperture in the frame lateral to seal said skirt against said hose and to com
38 and the head of the coupling is clamped by press said hose against said nipple, said nipple
extending into the bore of the hose in the zone 50
50 the nut 3B in a manner similar to that just de
scribed with reference to main line connections of compression of the wall thereof at least far`
enough to prevent any substantial reduction of
of the tube B.
The opposing end of the tube is joined to a T the diameter of the bore of the hose due to con-A
connection 39 of the lateral fluid conduit -by traction of the sleeve portion of said coupling
. ‘
screwing the end of the coupling E, such as that member.
5. A hose coupling having a body portion and
shown in Fig. 2, into the threaded bore 4U of such
coupling. However, in this instance, a seal is a sleeve projecting therefrom, the body portion
effected by the conical seat 4 underlying the and the sleeve dei'lning a chamber having an end
threaded portion of the stem 2 engaging with a wall, a cup adapted to lie within said sleeve, said
60 perforated conical seat 4l surrounding the end cup having a skirt adapted to encompass a hose 60
of passageway 42 rather than by the square and having a radial wall against which the end
ground surface l5 engaging with the radial face of said hose abuts anda nipple extending from
33 of the brake cylinder as in Fig. 4. Thus, the said radial wall and adapted to project within
coupling provides two sealing surfaces that will the hose at least far enough to prevent substan
permit it to be readily adaptable to varying types tial reduction of the diameter of the bore of the 65
of connection as evidenced by a comparison of hose due to contraction of the sleeve of the cou
pling member, said sleeve being compressed on
Fig. 2 with Fig. 9.
'I'he method of deforrning the sleeves of the said skirt thereby to seal said cup against the
coupling members inwardly to secure the hose bottom of the‘ chamber defined by said sleeve,
to the couplings is described and claimed in'my and to compress the hose between the skirt and
Patent No. 2,000,680 issued May '7, 1935, while the nipple to prevent ñuid from reaching the
fittings or coupling members having inwardly de end of the hose.
6. In a coupling for a iiexible hose having
formed sleeves are claimed in my application
Serial No. 1'7,937,.ñled April 24, 1935. Various displaceable walls, a thimble encompassing the
75 novel features disclosed but not claimed herein end of the hose and having a central tubular
2,008,650
part extending into the bore of the hose, a cou
pling member having a sleeve portion for receiv
ing said thimble and said hose end, said sleeve
portion being deformed inwardly to displace ma-_
terial of the bore into the thimble and to com
press the wall of the hose against the tubular
part of said thimble, said tubular part of said
thimble extending into the bore of the hose and
into the zone of compression of the wall thereof
10 at least far enough to prevent any substantial
reduction of the diameter of the bore of the hose
due to contraction of the sleeve portion of> said
sert against said sleeve, said nipple extending
into the bore of the hose in the zone oi! com
pression of the wall thereof at least far enough
to prevent any substantial reduction of the di
ameter of the bore of the hose due to the def
ormation of the sleeve portion of the coupling
member.
8. In combination, a hose, a coupling therefor
including a body portion having a'sleeve integral
therewith, said body portion and said sleeve de
10
iining a chamber for receiving the hose, means
for preventing fluid from reaching the end of
coupling member, said thimble being forcibly the hose comprising a nipple inserted within the
held in contact with the body of said coupling hose and having a radial disc formed integrally
member when said sleeve is contracted.
with said nipple and adapted to engage the end 15
7. In combination, a hose, a coupling therefor of the hose, said sleeve being deformed inwardly
including a. body portion having a sleeve integral to compress said hose against the nipple and to
therewith, said body portion and said sleeve de
fining a chamber having an end wall, an insert
20 for preventing ñuid from reaching the end of the
hose comprising a nipple inserted within the
hose and having a radial disc formed integrally
with said nipple and adapted to engage the end
of the hose, said sleeve being deformed inwardly
25 against said hose and said insert to compress
said hose against the nipple and to seal said in
seal said disc against- the bottom of the cham
ber defined by the' sleeve, said nipple extending
into the bore of the hose in the zone oi’ compres
sion of the wall thereof at least far enough to
prevent any substantial reduction of the diame
ter of the bore of the hose due to the deforma
tion of the sleeve portion of the coupling mem
ber.
'
ALBERT J. WEA'I'HERHEAD, JR.
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