Improvements in Treating India Rubber Hose Pipes and other similar Tubes, and in Apparatus to be used for such purpose.
Year: 1890

page_text: Date of Application, 28th July, 1890
Complete Specification Left, 28th Apr., 1891-Accepted, 13th June, 1891
PROVISIONAL SPECIFICATION.
Improvements in Treating India Rubber Hose Pipes and other
similar Tubes, and in Apparatus to be used for such purpose.
We CHARLES MACINTOSH AND COMPANY LIMITED of Cambridge Street
Manchester in the County of Lancaster India Rubber Manufacturers and JOHN
DEMPSEY of the same place, Foreman Hose Maker, do hereby declare the nature
of this invention to be as follows:-
This invention relates to a method of and apparatus for treating india rubber
hose-pipes or other similar tubes for the purpose of removing the superfluous air
therefrom, and to solidify the same (after its manufacture) by mechanical means
instead of by hand as hitherto practised.
It is well known to persons conversant with such manufacture that a certain
amount of air bubbles will always become imprisoned between the plies or layers of
india rubber hose or other similar tubing, after it has been rolled or made up in the
usual manner either by hand or machine, and more especially in the case of hose
pipes formed with an intermediate metal coil or spiral strengthening wire and these
air bubbles have now to be pressed out and removed by hand which is a slow and
tedious operation.
This invention is intended to remedy this defect and consists principally in the
use of compressed air acting upon the hose pipe or tube, which has the effect of
forcing or expelling the said air from between the plies or folds of the material of
which the pipe or tube is composed and rendering the same perfectly solid.
For this purpose we provide a strong metal chamber of suitable length in which
we place the hose or other pipe and which is so fitted that compressed air can
forced thereinto by any suitable arrangement of air pump or compressor and
conveying pipes.
Each end of this chamber is provided with a suitable covor plate so that it can
be readily opened and closed to admit of the hose or other pipe being easily placed
therein and removed therefrom.
It will of course be understood that the compressed air cylinder should be
provided with the usual pressure gauge, safety valve and other well known
appliances.
When it is desired to place a length of the hose or pipe in the chamber to bo
acted upon the ends or cover plates are removed and the hose or pipe with or
without the mandrel therein is drawn into the said chamber one end of a short
piece of metal pipe having been previously inserted for a few inches between the
plies of the pipe at each end. A piece of small india rubber tube is then attached
onto each metal tube, and the free ends of the said rubber tubes are drawn through
a metal pipe screwed into each end plate or cover of the chamber. The cover
plates are then put in place and secured by a union joint or otherwise in an air
tight manner.
In order to prevent the air pressure escaping from the chamber the last named
metal pipe is provided outside the cover plate with a stuffing box through which
the small india rubber tube passes.
When the end plates have been made secure compressed air is forced into the
chamber and acting upon the india rubber hose pipe or other tubing compresses the
same forcing the air bubbles between the plies thereof outwards, at each end, where
the air escapes through the small india rubber tubes above mentioned.
By this means, all the superfluous air is completely withdrawn or forced out
and the length of hose pipe or tubing made perfectly hard and solid thus saving

page_text: considerable time and labour, and the work is performed in a much more efficient
and perfect manner than can be effected by hand...
Dated this 26th day of July 1890.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Treating India Rubber Hose Pipes and other
similar Tubes, and in Apparatus to be used for such purpose.
We, CHARLES MACINTOSH AND COMPANY LIMITED, of Cambridge Street
Manchester in the County of Lancaster India Rubber Manufacturers and JOHN
DEMPSEY of the same place, Foreman Hose Maker, 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 relates to a method of and apparatus for treating india rubber
hose pipes or other similar tubes for the purpose of removing the superfluous air
therefrom, and to solidify the same (after its manufacture) by mechanical means
instead of by hand as hitherto practised.
It is well known to persons conversant with such manufacture that a certain
amount of air bubbles will always become imprisoned between the plies or layers of
india rubber hose or other similar tubing after it has been rolled or made up, in the
usual manner either by hand or machine, and more especially in the case of hose
pipes formed with an intermediate metal coil or spiral strengthening wire and these
air bubbles have now to be pressed out and removed by hand which is a slow and
tedious operation.
This invention is intended to remedy this defect and consists principally in the
use of compressed air acting upon the hose pipe or tube, which has the effect of
forcing or expelling the said air from between the plies or folds of the material of
which the pipe or tube is composed and rendering the same perfectly solid.
The apparatus which we propose to employ for the purposes of our invention will
be readily understood on reference to the accompanying drawing and the following
description thereof.
The drawing represents a vertical section of one end of the improved apparatus.
For this purpose we provide a strong metal chamber a of suitable length in which
we place the hose or other pipe.b and which is so fitted that compressed air can be
forced thereinto through the pipe a' by any suitable arrangement of air pump or
compresser and conveying pipes.
Each end of this chamber a is provided with a suitable cover plate e so that it
can be readily opened and closed to admit of the hose or other pipe b being casily
placed therein and removed therefrom.
It will be understood that the other end of the cylinder a may be similar to the
one illustrated on the drawings but the pipe a at that end is merely used for
releasing the compressed air when the tube b is finished ;-and also that the com-
pressed air cylinder or apparatus should be provided with the usual pressure gauge
safety valve and other well known appliances.
:
When it is desired to place a length of the hose or pipe in the chamber ato be
acted upon the ends or cover plates are removed and the hose or pipe & without.or
without the mandrel therein is drawn into the said chamber one end of.a.short
"piece of metal piped having been previously inserted for a few inches between the
plies of the pipe b at each end.
ג'
;
A piece of small india rubber tube e is then attached onto each metal tube d and
the free ends of the said rubber tubes e are drawn through metal pipes f screwed
into each end plate or cover c of the chamber. The cover plates c are then put in
place and secured by a-union joint or otherwise in an air tight manner.
.:

page_text: In order to prevent the air pressure escaping from the chamber the last named
metal pipe is provided outside the cover plate with a stuffing box g through which
the small india rubber tube e passes.
b
When the end plates c have been made secure compressed air is forced into the
chamber and acting upon the india rubber hose pipe or other tubing & compresses
the same forcing the air bubbles between the plies thereof outwards at each end,
where the air escapes through the small india rubber tubes e above mentioned.
By this means all the superfluous air is completely withdrawn or forced out and
the length of hose pipe or tubing made perfectly hard and solid thus saving con-
siderable time and labor and the work is performed in a much more efficient and
perfect manner than can be effected by hand.
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:-
First. The improved method of treating india rubber hose pipes and other similar
tubes by the use of compressed air for forcing or expelling the air from between the
plies or folds of the material of which the pipe or tube is composed, and
Secondly. The improved apparatus, substantially as hereinbefore described and
illustrated by the drawing annexed, for such purpose.
Dated this 27th day of April 1801
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicants