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Jan. 7,1947.
_ D. SAMIRAN
‘
SAFETY HOSE COUPLING
2,413,730
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Original Filed May 13, 1943
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Patented Jan.‘ 7, 3194?
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SAFETY nose COUPLING
David Samiran, Osborn, Ohio
hOriginal application May 13, 1943, Serial No.
486,832. Dividedv and this application Decem
her 19, 1944, Serial No. 568,915
2 Claims. (Cl. 285-138)
(Granted under the act of March 3, 1883, as
amended April 30, 1928; 370 O.‘ G. 757)
l
2
The invention ‘described herein may be manu
factured and used by or for the Government for
a light pressure. This pressure must be over
come before the collar 20 may be moved oppo
sitely of the arrow 22 to the unlocked position.
After the retainer 26 is forced out of the groove
governmental purposes, without the payment to
me of any royalty thereon.
over the larger diameter of the body adjacent the
groove, it moves easily until the retainer engages
the end of the sleeve. This retaining mechanism
which matured into Patent 2,386,270, of October
is adapted to yieldingly hold two telescopic thin
9, 1945, and relates to a ?uid pressure hose cou
walled tubes against axial movement with respect
pling having particular reference to a device for,
10 to each other.
connecting two parts of a pressure hose.
The modi?cation shown in Figs. 2 and 3 has all
An object of the invention is to provide a de
the elements of that shown in Fig. 1, with the ad
vice of this character whereby the two parts of a
pressure hose may be effectively connected with \
dition of a safety device which will prevent acci
dental unlocking of the two parts of the cou
minimum time and with minimum effort.
Another object of the invention is to provide 15 pling. Unlocking of the~coup1ing Ill, Fig; 1 is as
before stated, accomplished by pushing the lock
a safety means which will guard the coupling
ing collar 20 axially from the position shown in
against accidental uncoupling. Other objects will
the drawing against the resistance of the re
*be apparent upon consideration-of the following
description taken in conjunction with the draw
tainer 26. The retainer 26, which maintains the
20 locked position shown, may therefore be no
ing, wherein:
.
stronger than may conveniently be overcome with
Fig. 1 shows the coupling as it would appear
Without the safety feature.
the ?ngers.
Fig. 2 is a plan view of another modi?cation
When, however, a coupling of this type is used
to join two lengths of hose such as appear at 32
of the invention in which the safety device is
25 and 34, Figs. 2 and 3, the coupling as shown at
added.
vFig. 3 is a longitudinal axial section taken at ‘
ll], Fig. 1, may, without more, be inadequate, par
ticularly if the use is such that the lengths of
3-3 of Fig. 2 showing the safety device in greater
hose and coupling are dragged on the ground, for,
The coupling shown in Fig. 1, which may be
in that case, if the hose is dragged in the direc
broadly designated by the numeral l 0, may be 30 tion of the arrow 22, the shoulder 36, (see Fig. 1)
advantageously used in a situation where a large
may catch on a stone or other obstruction, and
the locking collar 20 be'thereby moved and the
inside capacity is necessary and the space or
coupling thereby become unlocked. The safety
weight factor is limited. It comprises a body l2
element 40, Figs. 2 and 3, is added to obviate the
and a sleeve l4 which is axially slidable into the
body until it encounters the shoulder it.
35 possibility of this contingency.
The coupling assembly ID of Fig. 1, when it has
A series of detents l8 in a circular row of pock
added thereto the safety element in the form of
ets I9 in the body are nested in an annular groove
a cage 40 of Figs.'2 and 3 may be broadly desig
inithe sleeve l4 to hold the sleeve in position. A
nated by the numeral II. The cage 40 on cou
locking collar 20 surrounds the body l2 and is
movable in the direction of the arrow 22, to the 40 pling I I consists of a cup-shaped part which may
preferably be slidably ?tted at 42 to the locking
position shown, to lock the detents in place. A
collar 20 and ?anged inward at the end of the
shoulder 24 limits movement of the locking collar
29 and a spring ring 26 is adapted to enter a
locking collar as at 44, the inner edge of the
?ange being held between a shoulder 43 on the
groove in the exterior surface of the body l2 to
hold the locking collar against axial movement. 45 sleeve l4 and‘ a ferrule 45 which is shrunk over
the outside of the hose. The‘open end of the
A shoulder 28 limits movement of the locking
cage 40 is partly cut away at intervals as at 46,
collar 20 in the direction opposite the arrow 22.
the remaining portions being otherwise so fabri
Synthetic rubber seal rings 30 are spaced along
cated as to provide a series of leaf springs 48.
the sleeve l 4 to seal against leakage.
This invention is a division of my I copending
-
application Serial No. 486,832, ?led May 13, 1943,
detail.
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It is noted that the spring ring 26 acts as a 50
yieldable retainer detent to hold the locking collar
2:! in the locked position with respect to'body I2
_ The front endyof the locking collar 20 has a
bead 50 encircling it, and the leaf springs 48 are
formed so as to snap over this bead.- Obviously '
dragging the hose cannot shift the locking collar
20 axially to the unlocked position because of the
encircle the groove'in'the body l2 and grip it with 56 way in which it is covered by the safety cage 40, '
as shown. The spring ring 26 is a single turn
open ring of spring wire made to substantially
2,418,780
3
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yet‘ collar 20 may be shifted easily by gripping '
it by thumb and ?nger in the spaces 48 between
the leaf springs 48 and pushing it forward against
the slight resistance of the leaf springs. and, oi
course, against the retainer ‘28.
,
Having described my invention, I claim:
1. In a hose coupling which comprises a body,
4
' thumb and finger pressure may be applied to said
locking collar to move it axially within said cage.
2. In a hose coupling which comprises a body,
a sleeve axially slidabie in said body, a detent
carried by said body adapted to engage said sleeve
and prevent axial movement between said body
and said sleeve, and a locking collar slidable axial
ly on said body for operating said detent into en
a sleeve axially slidable in said body, a detent
gagement with said sleeve, the improvement
carried by said body adapted to engage said sleeve
and prevent axial movement between said body 10 which consists of a safety element in the form of
a cage, said cage having one end ?anged inward
and sleeve, and a locking collar slidable axially
and joined to the sleeve to prevent axial move
on said body for operating said detent into en
ment between said cage and said sleeve, and the
gagement with said sleeve, the improvement
other end provided with circumferentially spaced
which consists of a safety element in the form‘ of
a cage surrounding and enclosing the locking col 15 axially extending'leaf springs tensioned to bear
on said locking collar to yieldably resist axial
lar, said cage being axially immovable with re
movement of said locking collar in said cage.
spect to the sleeve and having access openings
DAVID SAMIRAN.
through its sides to said locking collar, whereby
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