Improvements relating to Tubes.
Year: 1899

page_text: Date of Application, 14th Nov., 1899.
Complete Specification Left, 14th Aug., 1900-Accepted, 22nd Sept., 1900
I, ARTITUR PILKINGTON, Director, of the Firm of Tubes Limited, of Catherine
Street, Aston, in the County of Warwick, Manufacturers, do hereby declare the
nature of this invention to be as follows: :-
My invention has for its object the economical and convenient production of
boiler and other tubes, from a combination of iron and steel so arranged as lo
provide adequate strength with resistance to corrosion.
In one manner of constructing a compound tube I employ a pair of skelps which
are arranged respectively within and without each other and welded and drawn
or reduced together as described in my Specification No. 3332 of 1898, on which
Letters Patent have been granted to me. But instead of making both skelps
from iron or steel as described in the aforesaid specification, I employ one iron
and one steel skelp, placing the iron tubo on the inside in the case of a water
tube or tubulous boiler, but with the steel fube inside in the case of a fire tube
or tubular boiler.
In another method of producing the compound tube I employ two or more
skelps of iron or steel and interpose between them other skelps of steel or iron,
the respective skelps being made of such a size as to permit of nesting the one
within the other in the proper order.
Instead of making up the nests from skelps as hereinbefore described I some-
times forin the steel portions from the waste ends of weldless tubes or tube uses,
and I make other modifications in the production of my improved compound tubes
to suit varying services or requirements.
Improvements relating to Tubes.
I, ARTHUR PILKINGTON. Director of the Firm of Messrs Tubes Limited, of
Catherine Street, Aston, in the County of Warwick, Manufacturers, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:
My invention has for its object the economical and convenient production of

page_text: boiler and other tubes, from a combination of iron and steel so arranged as to
provide adequate strength with resistance to corrosion.
In one manner of constructing a compound tube I employ a pair of skelps which
are arranged respectively within and without each other and welded and drawn
or reduced together as described in my Specification No. 3332 of 1898, on which
Letters Patent have been granted to me. But instead of making both skelps
from iron or steel as described in the aforesaid specification, I employ one iron
and one steel skelp, placing the iron tube on the inside in the case of a water
tube or tubulous boiler, but with the steel tube inside in the case of a fire tube
or tubular boiler.
In another method of producing the compound tube I employ two or more
skelps of iron or steel and interpose between them other skelps of steel or iron,
the respective skelps being made of such a size as to permit of nesting the one
within the other in the proper order.
Instead of making up the nests from skelps as hereinbefore described I some-
times form the steel portious from the waste ends of weldless tubes or tube uses,
and I make other modifications in the production of my improved compound tubes
to suit varying services or requirements.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. Compound or combined steel and iron tubes for boilers and for other ser-
vices, formed by nesting and welding together iron and steel skelps or tubes, sub-
stantially as described.
2. In the manufacture or compound or combined steel and iron tubes for
boilers and for other services, the utilisation of waste tube ends, substantially
as described
Dated this 14th day of August 1900.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, & 25, Cross Street, Manchester,
Agents.