Improvements in or relating to Pipes, Tubes, and analogous Fittings.
Year: 1889

page_text: Date of Application, 11th Nov., 1889
Complete Specification Left, 30th June, 1890-Accepted, 30th Aug., 1890
Complete Specification Left, 30th June, 1890-Accepted, 30th Aug., 1890
PROVISIONAL SPECIFICATION.
Improvements in or relating to Pipes, Tubes, and analogous
Fittings.
I, ALEXIS SOUJOL of Madrid in the Kingdom of Spain, Engineer, do hereby
declare the nature of this invention to be as follows:-
Metallic tubes made of cast or sheet metal are already well known as also is the
process by which sand and tar are used for hardening purposes, but this system
presents many inconveniences which are detrimental to its object especially on account
of the flaws in the coating. Besides the above mentioned tubes are also manufactured
of cement by surrounding a core with a layer of a suitable thickness and afterwards
withdrawing the core.
There is also another arrangement of cement tube known as the "Monier" which
is similar to the last mentioned but has in its interior a very solid metallic
spiral.
This invention consists of new means of stiffening the metallic part with a layer of
cement which will permanently adhero to it so as to form with the metallic part a solid
structure.
This invention relates to sheet metal tubes manufactured of any kind of metal and
of any diameter length and thickness as the occasion may require. This sheet which
forms a hollow cylinder is coated, by means of any known system, with a layer
consisting principally of coment, which while covering the cylinder forms a solid whole
with it.
The plastic cement can be composed entirely of cement, cement and sand and also
cement and earth, hydraulic lime of different kinds, porcelain or any other substance
which by itself or inixed with an inert substance will form a body which will harden
and will not be detrimentally influenced by humidity.
The plastic cement paste which should envelope the tubes in place of tar as is done
at present is the substance which contains in itself all the necessary qualities to resist
humidity and other agents which would attack the metal, as the cement tends to
harden itself the longer it remains in contact with humid substances.
The tubes which may be of any required shapes may be coated on one or both sides
and may be connected together by similarly coated joint pieces.
Dated this 11th day of November 1889.
W. P. THOMPSON & BOULT,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to Pipes, Tubes, and analogous
Fittings.
1, ALEXIS SOUJOL, of Madrid in the Kingdom of Spain, 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:-
Metallic tubes made of cast or sheet metal are already well known as also is the
process of coating such tubes with sand and tar, but this system presents many incon-
veniences which are detrimental to its object especially on account of the flaws in the
coating. Besides the above, tubes are also manufactured of cement by surrounding
a core with a layer of a suitable thickness and afterwards withdrawing the core when
the cement is hardened.

page_text: applied and allowed to dry firmly to adhere to the walls of pipes and to harden
thereon under the combined influences of dampness and time substantially as
described.
1000
W. P. THOMPSON & BOULT,
Agents for the Applicant.