Improvements in Pipes for Conducting Water.
Year: 1889

page_text: Date of Application, 18th June, 1889
Complete Specification Left, 14th Mar., 1890-Accepted, 26th Apr., 1890
PROVISIONAL SPECIFICATION.
Improvements in Pipes for Conducting Water.
I, CLAUDE RIGNAULT, of Sainte (Seine et Marne) in the Republic of France, Plumber,
do hereby declare the nature of this invention to be as follows :-
This invention relates to improvements in pipes for conducting water, and has for
its object to produce a pipe which will be more durable, and more easily applied than
heretofore.
My improvements consist in forming a water pipe of bitumen, without solder, and
of any length and diameter required.
This I accomplish by forming such pipe in a mould, through which runs a wooden
cylinder, one end of which is formed square for the purpose of receiving a key, for
turning a metal plate round the cylinder.
This mould is formed U shaped and in the centre of same is placed the cylinder
provided with the metal plate.
If necessary this mould can be rivetted to an interior metal plate.
For pipes of large diameter, a wooden cylinder which is pierced with four openings
diametrically opposite to each other is provided, to receive two iron branches the length
of the interior diameter of the pipe.
For joining pipes together I place between two pipes a zinc ring, a little less in
diameter than the pipes, and pour liquid bitumen over the same, which in cooling
solidifies and forms a tight joint.
F. BOSSHARDT & Co.,
Agents to Applicant.
COMPLETE SPECIFICATION.
Improvements in Pipes for Conducting Water.
I, CLAUDE RIGNAULT, of Sainte (Seine-et-Marne), in the Republic of France,
Plumber, 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 and accompanying drawing (that is to say) :-
:-
This invention relates to an improved method of making pipes for conducting water,
of bitumen.
For this purpose I use the apparatus hereinafter described, and illustrated in the
accompanying drawing, in which figure 1 is a longitudinal section of a mould, and
figure 2 a collection of several such moulds held together for the purpose of facilitating
the work of casting.
For pipes of from 10 to 50 centimetres diameter I use a mould containing a central
iron bar a of suitable length for the pipes which are to be made, such length being
from 1 to 6 metres, and having a diameter of from 2 to 4 centimetres. This bar is
pierced, at distances apart of about 50 centimetres with transverse holes which receive
iron arms carrying iron rings b. Upon these rings are screwed longitudinal curved
bars c about 2 to 3 centimetres wide and 3 to 4 millimetres thick. Upon these bars,
which form a roller, I fit a sheet of zinc e which makes two or three turns round it so
as to form a cylinder. At each end of the mould in which the cylinder is placed I fit
a washer d of strong sheet metal of the proper size for the pipe, and having also an
opening, by which the bitumen is poured in to form the pipe.
In order to prevent the bitumen from adhering to the metal surfaces, the latter should
be greased from time to time.

page_text: For pipes of smaller diameter, that is to say below 10 centimetres diameter, a wooden
cylinder may be used instead of the one described, such cylinder being of the required
size and from one to two metres long. In order to cast these pipes, washers at each
end, and openings to pour in the bitumen are required, in the same way as for the
larger pipes.
In order to save time and cost, it is preferable to make the pipes in the place where
the bitumen is obtained, and instead of using a single mould to employ a number of
them instead united together as illustrated in figure 2.
Ten, twenty, or more, of these moulds may be held together between two double
crossbars through which holes are made at a distance apart corresponding with the
diameter of the moulds which are to be used. When the moulds have been arrangea
between these crossbars, they are held by pins 9 on one side, and on the other side by
screwed nuts h, so that a compact set of moulds is obtained into which a large quantity
of the bitumen can be poured at once.
For connecting the pipes together, they are adjusted in position end to end at a
distance of from 3 to 5 centimetres apart, and are united by fitting to them a previously
prepared sheet metal ring of the right diameter, then arranging round this an outer
ring having an opening into which bitumen is poured, which flowing round the ring
and between the ends of the pipes forms a perfect joint.
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 :-
The method of forming the moulds and cores, and of casting water pipes of bitumen,
substantially as described and shewn in the drawing.
Dated this 12th dow
1 1000
EDWARDS & Co.,
35, Southampton Buildings, Chancery Lane, London, Agents for the Patentee.