Improvements in Iron or Steel Tubes for the Conveyance of Liquids or Gases.
Year: 1891

page_text: Date of Application, 25th Apr., 1891
Complete Specification Left, 20 h Nov., 1891-Accepted, 9th Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in Iron or Steel Tubes for the Conveyance of
Liquids or Gases.
EDWIN WALKER High Street Heckmondwike Plumber do hereby declare the
nature of this invention to be as follows:-
The lining of iron or steel tubes with an internal lining or tubing of a less
corrosive metal such as lead or tin-and with or without the insertion of an inter-
mediate tube of any suitable kind of nonconducting material, inserted between the
inner and the outer metal tubes; and the method of performing the same which is
as follows viz. taking any required lengths of the iron or steel tube to be lined,
I have the inner tubing cut rather longer than the same so that after being passed
through, it can be flanged back against the outer ends of the said iron or steel
tube-so that when any number of these tubes are joined together at the ends they
present a continuous internal metallic surface of the same metal. And in order to
fix the said internal tube or tubes firmly to the inner surface of the iron or steel
tubes, after inserting the inner tubes I close one end of the same and apply by
means of a suitable pressure pump-compressed air or water so as to expand the
inner tube until it is firmly fixed to the inner surface of the said iron or steel tube.
. Dated this Twenty-fourth day of April 1891.
COMPLETE SPECIFICATION.
Improvements in Iron or Steel Tubes for the Conveyance of
Liquids or Gases.
I, EDWIN WALKER of High Street, Heckmondwike, in the County of York,
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 :―
This invention has reference to pipes to be employed for conducting water from
one place to another, but the said pipes may be used to convey other liquids
or gases.
As is well known, iron or steel pipes, from their great susceptibility to corrosion,
very soon deteriorate and become unfit for use, especially is this the case with small
bore pipes which are used for conducting water from street mains into dwelling
houses and other places. The object of my invention is the complete prevention
of the internal corrosion of iron or steel tubes or pipes by the insertion therein of
a lining or inner tubing composed of a less corrosive metal such as tin, lead, or
copper or any of their alloys.
Such being the nature and object of my invention, I will now explain how my
invention is put into practice, and for that purpose make reference to the accom-
panying drawings, wherein
Fig. 1 is an elevation of my improved combination pipe, which consists primarily
of a strong wrought iron or steel pipe A which has fitted within it an inner lining
or tubing B composed of pure tin or other non-corrosive metal or alloy. In
putting my invention into practice 1 obtain an iron or steel pipe of any required
length, and the internal tube to be placed therein is made rather longer than the
outer tube so that after the inner tube is inserted, one end thereof is closed up,
after which compressed air or water or other liquid or substance is forced by a
pump or other means into the inner tube, which expands the same and forces it

page_text: tightly against the inner surface of the outer tube. The projecting portion of the
inner tube is now flanged or bent against the ends of the outer pipe, as shewn in
Fig. 2, so that when a number of these pipes are joined together at their meeting
ends, they present a continuous internal surface of the same metal throughout
which thus protects the iron in every part from the injurious action of any water
or other liquids or gases enclosed therein or passing therethrough. The pipes with
their linings can be made of any required length or strength.
If required an intermediate tube of any suitable material may be inserted
between those already shewn and described.
Having now particularly described and ascertained the nature of my said inven-
tion, and shewn how the same can be put into practical operation, I would observe
that I do not limit myself to the method of inserting the internal pipe, nor to the
exact composition of metals used, but what I believe to be new and therefore claim
as my invention, is :-
The insertion of a lining of tin or other non-corrosive metal, within an iron or
steel tube, substantially as and for the purpose herein shewn and described.
Dated this 19th day of November 1891.
TASKER & CROSSLEY,
Halifax, Agents.