IMPROVE- MENTS IN COATING OR COVERING METALLIC SURFACES WITH COPPER
Year: 1862

page_text: LETTERS PATENT to John Henry Johnson, of 47, Lincoln's Inn Fields,
in the County of Middlesex, and of 166, Buchanan Street, in the City
of Glasgow, North Britain, Gentleman, for the Invention of "IMPROVE-
MENTS IN COATING OR COVERING METALLIC SURFACES WITH COPPER."-A
communication from abroad by Charles Francois Leopold Oudry, of
Paris in the Empire of France.
PROVISIONAL SPECIFICATION left by the said John Henry Johnson
at the Office of the Commissioners of Patents, with his Petition, on the
30th August 1862.
I, JOHN HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of
Middlesex, and of 166, Buchanan Street, in the City of Glasgow, North
Britain, Gentleman, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN COATING OR COVERING METALLIC SURFACES WITH COPPER," a
communication from abroad by Charles Francois Leopold Oudry, of Paris,
in the Empire of France, to be as follows:-
This Invention relates to the coating or covering of wrought or cast iron,
zine, or other suitable metallic surfaces with copper, by means of the magneto-
electric or electro-galvanic processes, and consists in the employment of
certain peculiar compositions herein-after set forth, or other compositions of
an analagous nature, which are applied to the metallic surfaces to be-coated

page_text: with copper by means of a brush or other suitable method before placing
them in the cupreous bath for the purpose of forming an intermediate coating
between the copper to be deposited and the metallic surface, thereby avoiding
the deleterious action which arises frequently when the copper is in immediate
contact with the metal upon which it is deposited.
The following are the compositions above referred to, any one of which may
be used according to the purposes to which the articles are to be applied:-

page_text: After applying, either heated or cold, any one of the above compositions to
the surface of the metal to be submitted to the action of the depositing bath,
the surface is covered with powdered graphite or other good conducting
medium before being immersed in the cupreous bath. Should any portion of
a metallic surface so coated become exposed by the accidental displacement or
removal of the copper covering or coating, it is proposed to repair the defect
by means of a solder composed of précipitated or "galvanic copper" reduced
to powder, and mixed with resin, copal, and wax. This solder is applied by
means of soldering irons or by a brush, according to the nature of the repairs
to be effected, and is afterwards bronzed by the processes employed in
bronzing galvanic copper. The copper may be precipitated on articles so
prepared by any of the ordinary electro-galvanic or magneto-electric methods
or processes at present employed.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Henry Johnson in the Great Seal Patent Office on
the 27th February 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
HENRY JOHNSON, of 47, Lincoln's Inn Fields, in the County of Middlesex,
and of 166, Buchanan Street, in the City of Glasgow, North Britain
Gentleman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirtieth day of August, in the year of our Lord
One thousand eight hundred and sixty-two, in the twenty-sixth year of
Her reign, did, for Herself; Her heirs and successors, give and grant unto me,
the said John Henry Johnson, Her special license that I, the said John
Henry Johnson, my executors, administrators, and assigns, or such others
as I, the said John Henry Johnson, my executors, administrators, or
assigns, should at any time agree with, and no others, from time to time and
at all times thereafter during the term therein expressed, should and lawfully
might make, use, exercise, and vend, within the United Kingdom of Great
Britain and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN COATING OR COVERING METALLIC, SURFACES WITH COPPER," a
communication from abroad by Charles François Leopold Oudry, of Paris, in
the Empire of France, upon the condition (amongst others)-that I, the said

page_text: and original, and therefore claim as the Invention secured to me by the herein-
before in part recited Letters Patent, is,―
First, the application and use of any one of the protective compositions
herein-before described, or compositions of an analogous nature to, and in the
coating or covering of metallic surfaces preparatory to the deposition of copper
thereon by the ordinary electro-galvanic or magneto-electric processes, such
protective composition being itself coated or covered with any good conductor
of electricity.
Second, the application and use of the herein-before described solder for
effecting repairs in the surfaces of copper coated articles.
In witness whereof, I, the said John Henry Johnson, have hereunto
set my hand and seal, this Twenty-seventh day of February, One
thousand-eight hundred and sixty-three.
J. HENRY JOHNSON.
(L.8.)