Year: 1888

page_text: 1, RICHARD SMITH CASSON, of Brierley Hill, in the County of Stafford, Iron and
Steel Works Manager, do hereby declare the nature of this invention to be as
follows:-
This invention has reference to improvements in the manufacture of metallic
covered or coated tubes whether provided with close joints not soldered or with brazed
or welded joints.
In the manufacture of metallic coated or covered tubes it has heretofore been
usual to employ a skelp or tube formed of either a strip of hot rolled iron, or of soft
steel, of ordinary quality.
In order to give a skelp or tube formed of such material a sufficiently good surface
to receive a coat or covering of metal by electrical deposition it has been necessary
to subject it to polishing operations requiring the expenditure of considerable time
and labour. Now according to my invention I employ a strip of cold rolled iron,
mild steel or homogeneous metal of a suitable width and thickness which is turned
up into a skelp or suitable method as well as understood..
This skelp or tube is.then either treated as a close jointed tube, or it may be
brazed, or be electrically or otherwise welded; it is afterwards polished, it may be by
means of revolving emery bobs or wheels and felt or by wooden bobs or wheels
dressed with dry emery or with a mixture of emery and oil, or by grindstones and
in those cases where a very perfect surface is required, the process of polishing
may be either wholly performed or may be finished in a machine similar to that
described in the specification of a former patent No. 13950 of 1884. Such polishing
operation however, with a tube of cold rolled metal requires the expenditure of
much less time and labor than heretofore because such inetal has a much smoother
and more even surface than the sheet metal ordinarily employed for the manufacture
of tubes.
When the polishing has been completed the tube may be coated or covered by
metal electrolytically deposited in any suitable manner. Thus it may be subjected to
the action of a cyanide plating solution acted upon by an electric current for the

page_text: purpose of depositing on the surface of the tube a film of brass, copper or other
metal which is susceptible of being deposited by electric action. Or I may coat my
tube as I prefer to do by the use of an acid solution of the salts of the metals to be
deposited in place of a cyanide or alkaline bath.
By my process I electrolytically deposit the brass or other metal direct upon
the prepared tube without the use of an intermediate layer of metal deposited from
a cyanide solution of such, metal, thereby diminishing the cost of manufacturing brass
coated tubes.
The coated tube is completed by polishing it either by listing or by means of
revolving felt bobs or mops and leather, cotton or woollen mops, or mops made of
other suitable materials, the tube being finally lacquered by any ordinary or suitable
process.
According to a modification in lieu of using a strip of cold rolled iron, mild
steel or homogeneous metal I may employ a strip of iron or steel of ordinary
quality to one side or surface of which I impart a suitable degree of smoothness by
grinding, such strip when necessary being polished or glazed by any suitable means
such as a dry emery bob, prior to turning up the strip into a skelp or tube.
The skelp or tube is then treated in the manner hereinbefore mentioned for
converting it into a finished coated or covered tube.

page_text: Improvements in the Manufacture of Metallic Tubes.
I, RICHARD SMITH CASSON, of Brierley Hill, in the County of Stafford, Iron and
Steel Works Manager, 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 improvements in the manufacture of metallic
covered or coated tubes, whether provided with close joints not soldered, or with
brazed or welded joints. In the manufacture of metallic coated or covered tubes, it
has heretofore been usual to employ a skelp or tube formed of either a strip of hot
rolled iron, or of soft steel, of ordinary quality. In order to give a skelp or tube
formed of such material, a sufficiently good surface to receive a coat or covering of
metal by electrical deposition, it has been necessary to subject it to polishing
operations requiring the expenditure of considerable time and labour.
Now according to my invention I make metallic covered or coated tubes as I will
proceed to describe. I employ a strip of cold rolled iron, mild steel, or homo-
geneous metal of a suitable width and thickness which is turned up into a skelp or
tube by any known or suitable method as well understood. This skelp or tube is then
either treated as a close jointed tube, or it may be braized or welded; it is afterwards
polished, it may be by means of revolving emery bobs, or wheels, and felt, or by
wooden bobs or wheels, dressed with dry emery, or with a mixture of emery and oil,
or by grindstones, and in those cases where a very perfect surface is required the
process of polishing may be either wholly performed, or may be finished, in a machine
similar to that described in the specification of a former patent No. 13950 of 1884.
Such polishing operation however, with a tube of cold rolled metal requires, the
expenditure of much less time and labour than heretofore, because such metal has a
much smoother and more even surface than the sheet metal ordinarily employed for
the manufacture of tubes.
When the polishing has been completed, the tube is coated or covered by metal
electrolytically deposited in any suitable and well known manner. Thus it may be
subjected to the action of a cyanide plating solution, acted upon by an electric
current for the purpose of directly depositing on the surface of the tube a film or coat
of brass, copper, nickel or other alloy or metal which is susceptible of being directly
deposited by electric action upon the metallic tube.
By my process I case or electrolytically deposit the brass or other metal direct upon
the prepared tube without the use of an intermediate layer of metal deposited from a
cyanide solution of such metal, thereby diminishing the cost of manufacturing brass
coated tubes.
The coated tube is completed by polishing it either by listing or by means of
revolving felt bobs or mops and leather cotton or woollen mops, or mops made of
other suitable materials, or by burnishing, the tube being finally lacquered by any
ordinary or suitable process.

page_text: According to a modification, in lieu of using a strip of cold rolled iron, mild steel
or homogeneous metal, I may employ a strip of iron or steel of ordinary quality to
one side or surface of which I impart a suitable degree of smoothness by grinding,
such strip when necessary being polished or glazed by any suitable means such as
a dry emery bob, prior to turning up the strip into a skelp or tube.
The skelp or tube is when treated in the manner hereinbefore mentioned for con-
verting it into a finished coated or covered tube.
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 I do not
clain broadly the direct deposition of a metallic alloy such as brass or a metal such
as copper or nickel upon metallic tubes or the treatment of strips of ordinary metal
to obtain an even surface, before such strips are turned up into a skelp or tube, but
what I do claim is :-.
1. The herein above described manufacture of tubes of cold rolled iron, mild steel
or homogeneous metal coated or covered with other suitable metal or an alloy, as set
forth.
2. In the manufacture of compound metallic tubes, imparting a smooth surface to
strips of iron or steel, then converting them into skelps or tubes, afterwards coating
or covering with other metal and finishing as herein above described.
CRTAT RAIS EN
LAXY
TRIPA RAIS 4LD ARY AT NORONHA TAI
LAXY
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.
W. LLOYD WISE,
46, Lincoln's Inn Fields, London, W.C.,
Agent for the Applicant.