Improvements relating to the Manufacture of Flexible Rubber Hose.
Year: 1893

page_text: Date of Application, 15th May, 1893
Complete Specification Left, 9th Feb., 1894-Accepted, 24th Mar., 1894
PROVISIONAL SPECÍFICATION.
Improvements relating to the Manufacture of Flexible Rubber Hose.
I CHRISTIAN HAMILTON GRAY of Silvertown in the County of Essex,
Engineer, do hereby declare the nature of this invention to be as follows:-
In the manufacture of flexible rubber hose, it is usual to employ, as a foundation
for the rubber, strips of woven fabric, of cotton, flax, or other suitable material.
These strips of fabric, in order to permit the required flexibility in the hose, when
they are combined with the rubber in the manufactured article, have to be cut on
the cross, at an angle of about 45°, from a woven web, which necessarily can
only be of a limited width. Consequently, when hose is being made in consider-
able lengths, say, 60 feet, a number of strips cut on the cross, or bias, from a
comparatively narrow web, have to be joined end to end, to get the required.
length.
The object of the present invention is to get one continuous length of woven
fabric cut on the cross, at an angle of 45°, so as to render the operation of joining
unnecessary.
According to my invention, I take a woven tube of the desired diameter, and I
cut it helically, at an angle of 45° to the line of the warp threads, round and round,
until a continuous strip of the length required is procured.
This helical cutting of the woven tube can be effected either by a machine:
specially contrived for the purpose, or by hand.
The width of the strip to be obtained is regulated by the diameter of the tube,
so that a large tube will give a wide strip, and vice versa, for the angle of the helical
cut must not be varied to get differences in the width of the strip, as the latter'
should be cut at an angle of 45°, which is the most suitable angle, and the one at
present in vogue generally.
Besides getting a cross-cut strip of woven fabric in one continuous length, the
method herein explained obviates cutting to waste, which cannot be avoided when
the strips are cut from the web in the ordinary way.
Moreover, an economy is effected, both in time and material, by avoiding the,
necessity of overlapping the ends of the strips, to form a number of pieces together
end to end, to form a length, according to the usual plan.
Dated this 15th day of May 1893,
NEWTON & SON,
Agents for the. Applicant.
COMPLETE SPECIFICATION.
Improvements relating to the Manufacture of Flexible Rubber Hose.
I, CHRISTIAN HAMILTON GRAY of Silvertown in the County of Essex,
Engineer, 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 :—
In the manufacture of flexible rubber hose, it is usual to employ, as a foundation
for the rubber, strips of woven fabric of cotton, flax, or other suitable material.
These strips of fabric, in order to permit the required flexibility in the hose, when
they are combined with the rubber in the manufactured article, have to be cut
on the cross at an angle of about 45° from a woven web, which necessarily can
ID 7

page_text: only be of a limited width. Consequently, when hose is being made in consider-
able lengths, say 60 feet, a number of strips cut on the cross or bias, from a
comparatively narrow web, have to be joined end to end to get the required
length.
The object of the present invention is to get one continuous length of woven
fabric cut on the cross at an angle of 45°, so as to render the operation of joining
unnecessary.
.
According to my invention, I take a woven tube of suitable circumference, and I
cut it helically at an angle of 45° to the line of the warp threads, round and round,
until a continuous strip of the length required is procured.
In the accompanying drawing I have shewn a portion of a woven tube cut round
and round according to my invention.
The part a of the tube, although the line of cutting is indicated, is shown as
retaining the tubular form. The part 6 of the tube shows the cut tube laid out as
a strip, which may be of unlimited length, if desired.
The helical cutting of the woven tube may be effected by placing it on a
rotating mandrel, and holding against it a cutting tool, a travelling movement in
the direction of the length of the tube being communicated to the mandrel, or to the
tool at the required speed.
The width of the strip to be obtained is regulated by the circumference of the
tube, so that a large tube will give a wide strip, and a smaller tube a narrower
strip, for the angle of the helical cut must not be varied to get differences in the
width of the strip, as the latter should be cut at an angle of 45°, which is the most
suitable angle, and the one generally adopted.
If the woven tube is of such diameter as to produce, when cut up, a strip of
greater width than is required for the work in hand, such strip may be divided up
longitudinally to give the breadth of strip or strips desired.
Besides getting
a cross cut strip or strips of woven fabric in continuous lengths,
the method herein explained obviates cutting to waste, which cannot be avoided
when the strips are cut from the web in the ordinary way.
Moreover, an economy is effected, both in time and material, by avoiding the
necessity for overlapping the ends of the strips to join a number of pieces together
end to end, to form a length, according to the usual plan.
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 :-
In the manufacture of a length of flexible rubber hose and similar goods,
the employment of a continuous strip of textile material, formed by cutting a
woven tube helically, or round and round, substantially as herein described with
.reference to the drawing.
ليم
T
NEWTON & SON,
Agents for the Applicant.