IMPROVEMENTS IN AND CONNECTED WITH HOSE COUPLINGS
Year: 1884

page_text: I EDWARD NUNAN of 166 Fleet Street, in the city of London, Gentleman,
do hereby declare the nature of my said invention for "IMPROVEMENTS IN AND
CONNECTED WITH HOSE COUPLINGS " to be as follows:-
In the specification of my previous patent No 5272 1882 I describe and' show in
the drawings a certain formation of the back of the dog C on which the-ring F.
can be moved to force the dog head into contact with shoulder E when the coupling
has to be closed.
Now it has been found in practice that during rough usage to which hose
couplings are subject that the ring F is often inclined to become loose and the
joint to separate and it is my intention by a certain detail construction or forma-
tion of the back of the dog C that this inconvenience can be obviated.
My improvement consists in constructing the lug C with a reverse incline upon
which the ring F slides so as to cause said ring to spring home and so remain until.
equally pulled back, that is to say, that when said ring is engaged in holding the
dogs Ċ tight on the male bead E the reverse incline prevents said ring being
disengaged when the coupling is drawn on rough pavement or said ring struck.at
any one part thereof.
I also round the rocking point of said lug to guard against wear, also, the angle
of notch M is rounded to give additional strength to said lug.
Also, in constructing the slide ring I form a corresponding incline to that formed
on the lug C in order to fully accomplish the operation of locking when said ring
is not otherwise locked by the operation of twisting the same.
The next part of my invention relates to the employment of rubber, leather,
cork or similar material in the faces of the eccentric or tightening rings of hose
pipe coupling.
For the purpose of holding eccentric or screw incline tightening rings in position
I insert in interstices in the inner face of said rings one or more pieces of rubber,
leather cork or other springing substance, projecting enough from the face of such
ring, to bear sufficiently to keep such ring in its place and prevent it moving too
loosely or leaving its required position.

page_text: I EDWARD NUNAN of 166 Fleet Street in the City of London, Gentleman
do hereby declare the nature of this invention and in what manner the same
is to be performed. to be particularly described and ascertained in and by the
following statement:―
My invention relates to certain detail improvements in hose coupling with
which a sliding locking ring fitted on one half of the coupling is employed to
'press the heads of dogs into contact with the other part of the coupling so as
to lock the two parts firmly together, watertight, an india rubber or other flexible
ring being employed as a packing.
The invention is based upon a previous patent granted to me on the 4th November
1882 No 5272.
For the purpose of my invention which I clearly show in the annexed drawings
Figures 1, 2, 3, 4 and 5 I form three or other number of recesses or slots A in the
periphery B of one half of the coupling with an undercut C to each serving as a
receptacle for the tail piece D of dogs E which fit loosely within them and in
which they are free to move as a joint when a locking ring F which embraces
them is moved up or down, assisted or not by the projection F¹ shown in dotted
lines at Figure 4, the locking ring F acting upon a curved portion G at the lower
part H to tilt the heads I of the dogs E away from a curved flange J of the other
portion of the coupling as indicated at Figure 2 when a separation is required.
The upper outer face K of each dog E is chamfered or inclined inversely as at
Figure 3 so that when the coupling up is to be made the locking ring F is forced
over the shoulder L between the curved and the inclined part the ring F. being
then held firmly in contact by a rebound of the rubber packing M which became
compressed beyond its desired extent as the locking ring F passed the shoulder L.
For ordinary use of the coupling this locking of the ring is sufficient but for
greater security during rough wear such as when the hose is dragged along the
ground the locking ring. F can be turned in a circular direction to bring flanges N
Figure 4 into the grooves P at the upper part of the dogs as indicated at Figure 1.
When the ring has to be moved up or down only the dogs are within recesses Q, Q.
of the locking ring F see Figure 4 which is a plan, and to prevent rattling or any
movement of the locking ring F except when desired I insert plugs of rubber, cork
or other yielding material R in the inner face of the locking ring F so that the
ends of the plugs R project within the inner periphery of the locking ring F to
bear upon the outer surface B of the female half coupling.
The mouth of this female half of the coupling is curved on the inner face S for
the easy insertion of the flange of the male half of the coupling within it and the
heads I of the dogs E work within recesses or notches provided for them. The
male half of the coupling has a plain neck T on which a ring U is fitted loosely
so as to turn round on the neck said ring U having arms V provided with rollers W
on their ends as at Figures 1 and 5. This loose ring is kept in its place by the
lashings X which hold the hose Y to the coupling, thus if the hose is wound upon
a reel it may flatten itself at any part of its diameter instead of always at one

page_text: part as is usually the case where the arms V are fixtures to the coupling. The
rollers W on the arms V, when gripped by the person spreading or running out
the hose, provide a suitable purchase for his hands.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that.
what I claim is
1. The combination of the various parts herein before described and as represented
in the annexed drawings.
2. The inverse inclines L on the dogs E by which the locking ring F is held
tightly and the coupling made complete for ordinary use as described.
3. Fitting the inner portions of sliding rings of couplings with rubber or like
material R to hold them ie the locking rings F temporarilly at any part of said
coupling as described.
4. Fitting a loose ring U on a coupling which is free to adjust itself and allow of
the hose being folded at any part of its diameter as described.