Improvements in Hydraulic and other Hose Couplings intended to Resist High Pressure.
Year: 1895

page_text: Date of Application, 18th Feb., 1995
Complete Specification Left, 18th Nov.. 1895-Accepted, 21st Dec., 1895
PROVISIONAL SPECIFICATION.
Improvements in Hydraulic and other Hose Couplings intended to
Resist High Pressure.
We F. REDDAWAY & CO. LIMITED, of Cheltenham Street, Pendleton,
Manchester, in the County of Lancaster, Manufacturers of Woven Machine
Belting and Hose, and FRANK REDDAWAY, Managing Director of the same
Company, do hereby declare the nature of this invention to be as follows:-
Our said invention relates to improvements in means for coupling or connecting
hydraulic or the like hose to a press or other apparatus or vessel into which the
pressure requires to be conveyed, or for coupling together different lengths of such
hose. The hose for which it is most particularly adapted is the strong hose
surrounded by coils of wire, such for example as the now well known Sphincter
Grip Hose now manufactured by our firm. It will be evident that to connect
hose conveying such strong pressure as is usually passed through the Sphincter
Grip Hose, couplings of great strength and of particular construction require to
be used.
Our invention therefore relates to the particular construction and design of the
improved coupling which we will now describe. A tapered nozzle screwed or
otherwise connected to the press or vessel to which the pressure is to be conveyed,
carries a thimble which projects partly over the said nozzle. The exterior of this
thimble is screwed and upon this we mount an internally screwed box-nut the
lower checked part of which contains a tapered binding ring. Within this binding
ring we arrange two, three or more clamps, which when put together form an
expandable and contractable gripping cylinder surrounding the end of the hose to
be coupled and having internal tapered circumferences furnished with teeth or
serrations which firmly grip the hose. That part of the hose which is so gripped
is denuded of its wire coil covering, but the rear ends of the said clamps are
preferably formed and grooved so as to fit over the wire coils and firmly hold and
bind these also. When all of the aforesaid parts are in position, (the end of the
hose being drawn upon the tapered nozzle), further screwing of the box-nut upon
the thimble jambs the clamps more tightly down upon the hose compressing it
against the inner tapered nozzle through the whole length of the joint and
preventing any possibility of leakage or of the coupling being blown off. The
tapered interior of the binding ring which holds the clamps together slides upon
the inclined faces of the clamps and by its wedging action forces the clamps
down upon the hose. By duplicating the coupling it can be used to connect
separate lengths of lose together. The improved coupling can be readily connected
and disconnected and does not require the use of any packing to make a fluid tight
joint.
Dated this 16th day of February 1805
E. K. DUTTON & Co.,
5 John Dalton Street, Manchester, Agents.

page_text: Improvements in Hydraulic and other Hose Couplings, Intended to
Resist High Pressure.
We F. REDDAWAY & Co. LIMITED, of Cheltenham Street, Pendleton,
Manchester, in the County of Lancaster, Manufacturers of Woven Machine
Belting and Hose, and FRANK REDDAWAY, Managing Director of the same
Company, do hereby declare the nature of this invention and in what inanner the
same is to be performed, to be particularly described and ascertained in and by
the following statement and accompanying drawings:
:-
Our said invention relates to improvements in means for coupling or connecting
hydraulic or the like hose to a press or other apparatus or vessel into which the
pressure requires to be conveyed, or for coupling together different lengths of such
hose. The hose for which it is most particularly adapted is the strong hose'
surrounded by coils of wire, such for example as the now well known Sphincter
Grip Hose now manufactured by our firm. It will be evident that to connect,
hose conveying such strong pressure as is usually passed through the Sphincter
Grip Hose, couplings of great strength, and of particular construction require to
be used.
'
Our invention therefore relates to the particular construction and design of the
improved coupling which we will now describe, reference being had to the annexed
sheet of drawings.
Fig. 1 of the said drawings is a side view of the improved coupling.
Fig. 2 is a longitudinal section.
Fig. 3 is an end view of the clamp segments which surround and hold the hose
in the coupling.
A tapered nozzle a screwed or otherwise connected to the press or vessel to which
the pressure is to be conveyed, carries a screwed sleeve or thimble 5 which projects
partly over the said nozzle a. The exterior of this thimble bis screwed and upon.
this we mount an internally screwed box nut c, the outer checked part of which
contains a tapered binding ring d. Within this binding ring we arrange two, three
or more segment clamps e, three being used in the drawing, which when put together
as shown in the end view Fig. 3 form an expandable and contractable gripping
cylinder surrounding the end of the hose f to be coupled, and having internal
tapered circumferences furnished with teeth or serrations which firmly grip the
hose as clearly shown in Fig. 2. That part of the hose which is so gripped is
denuded of its wire coil covering, this being lettered in the drawing, but the rear
ends of the said clamps e are preferably formed and spirally grooved so as to fit
over the wire coils g and firmly hold and bind these also. When all of the
aforesaid parts are in position (the end of the hose being drawn upon the
tapered nozzle a) further screwing of the box nut c upon the thimble b. jambs
the clamps eee more tightly down upon the hose,, compressing it against the inner
tapered nozzle through the whole length of the joint and preventing any
possibility of leakage or of the coupling being blown off. The tapered interior of
the binding ring d which holds the clamps e e e together slides upon the inclined
faces of the clamps and by its wedging action forces the clamps down upon
the hose.
By duplicating the coupling it can be used to connect separate lengths of hose
together.
The improved coupling can be readily connected and disconnected and does not
require the use of any packing to make a fluid tight joint.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is.
1. The improved form of hydraulic and other hose coupling, substantially as
hereinbefore described and shown.
2. A coupling for use in conjunction with Sphincter Grip or other bydraulic
or fluid pressure hose, consisting of the inner nozzle a, clamp segment rings e,
binding ring d, box nut c and screwed sleeve or thimble b, all combined and
operating for the purposes and substantially as described and shown.
3. In a hose of the indicated nature, the clamp ring segments e with peripheral
inclines and having their inner inclined circumference serrated or toothed to grip
the hose and having also spiral grooves to engage with the coiled wire armouring
of the hose, in combination with the binding ring d formed, applied and operating
substantially as described and as illustrated.
Doted the 16th day of November 1805
For the Applicants,
E. K. DUTTON & Co.,
5 John Dalton Street, Manchester, Chartered Patent Agents.