Improvements in Metallic and Composite Hose.
Year: 1894

page_text: Date of Application, 18th Jan., 1894
Complete Specification Left, 18th Oct., 1894-Accepted, 24th Nov., 1894
PROVISIONAL SPECIFICATION
Improvements in Metallic and Composite Hose.
I, JOHN COCKBURN, Superintendent North British Rubber Company (Limited),
Mechanical Department, Castle Mills, Edinburgh, do hereby declare the nature of
this invention to be as follows:-
This invention has for its object the production of flexible metallic hose or
tubing suitable for conveying steam, gases or other fluids or liquids which owing
to their high temperature or composition tend to destroy or damage the rubber
compound or like material of which such hose is ordinarily made.
To that end I form flexible hose from tubing made of block tin, lead, copper,
white metal or other suitable metal or alloy and to which spiral or circumferential
corrugations are imparted to render the tubing flexible.
The corrugations are preferably formed by spinning or placing a coil of metallic
wire or ribbon around or within such tubing or both around and within it and
subsequently subjecting the tubing to hydraulic pressure applied on the inside or
outside or on both surfaces thereof in order to force the metal partly between the
convolutions of the wire or ribbon and cause it to assume the corrugated form.
The wire when applied outside the tubing serves both to strengthen the hose and
as a protective covering to it.
Flexible hose or tubing produced as described may be used without further
covering or it may be covered or coated with rubber or rubber compounds or other
suitable material.
In combination with spiral wire inside the hose I vary the form of the ribbon by
bending its middle part down between the convolutions of the spiral wire and
allow the edges of the ribbons simply to overlap on the outside of the wire con-
volutions inside of the protecting covering of rubber or other material; or
conversely the middle of the ribbons may be bent to embrace the outside of the
wire convolutions the overlapping of the edges of the ribbons then being between
them.
Daind this 17th AT1004
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents.
COMPLETE SPECIFICATION.
Improvements in Metallic and Composite Hose.
I, JOHN COCKBURN, Superintendent, North British Rubber Company (Limited),
Mechanical Department, Castle Mills, Edinburgh, 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 :-
This invention has for its object the production of flexible metallic hose or tubing
suitable for conveying steam, gases or other fluids or liquids which owing to their
high temperature or composition tend to destroy or damage the rubber compound
or like material of which such hose is ordinarily made.
To that end I form flexible hose from tubing made of block tin, lead, copper,
white metal or other suitable metal or alloy or rubber of a hard or semi-hard
consistency and to which spiral or circumferential corrugations are imparted to render
the tubing flexible.

page_text: Figure 1 is a transverse and Figure
a longitudinal section of the improved
hose whilst Figures 3 and 4, 5 and 6, and 7 and 8 are corresponding views of
several modifications thereof.
As shewn by Figures 1, 2, 3 and 4 the corrugations a of the hose A are
preferably formed by spinning or placing a coil of metallic wire or ribbon B
around or within tubing C or both around and within it and subsequently
subjecting the tubing to hydraulic pressure applied on the inside or outside or on
both surfaces thereof in order to force the metal partly between the convolutions
of the wire or ribbon B and cause it to assume the corrugated form. The wire
when applied outside the tubing C serves both to strengthen the hose and acts as
a protective covering to it.
.
Flexible hose or tubing produced as described may be used without further
covering or it may as shewn be covered or coated with rubber or rubber compounds
or other suitable material.
Figures 5 and 6 shew a modification in which instead of employing a tube C
I use in combination with the spiral wire B inside the hose a ribbon D spun spirally
upon the wire B, bending its middle part down between the convolutions of the
spiral wire B and allowing the edges of the ribbon D simply to overlap on the
outside of the wire convolutions inside of the protective covering E of rubber or
other material; or conversely as at Figures 7 and 8 the middle of the ribbon D may
be bent to embrace the outside of the wire convolutions the overlapping edges of
the ribbon then being between the convolutions.
As shewn by Figures 7 and 8 the hose may have a wire F spun in spiral form on
the outside of the rubber covering E.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
Flexible metallic or composite hose constructed substantially as hereinbefore
described under several modifications with reference to the annexed drawings.
Dated this 17th day of October 1894.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow, Agents,