An Improved Process for the Preparation of Iron or Steel Plates for Nickel or other Plating.
Year: 1893

page_text: Date of Application, 17th Apr., 1893
Complete Specification Left, 19th Feb., 1894-Accepted, 7th Apr., 1894
PROVISIONAL SPECIFICATION.
An Improved Process for the Preparation of Iron or Steel Plates
for Nickel or other Plating.
I, CARL TUNSTILL JOHN OPPERMANN, of 2 Wynyatt Street, Clerkenwell,
in the County of Middlesex, Electrician, do hereby declare the nature of this
invention to be as follows:-
My invention relates to an improved process, whereby I prepare iron or steel
plates for a polished plating of nickel or other metal, without rendering the said
plates too brittle to be afterwards worked or bent into any desired shapes, and by
which I obtain an excellent polished face to the finished article, with less labour
than has heretofore been done.
To carry out my invention I give the ordinary charcoal steel or iron plates,
known as "tin-plates," an extra coating of soft metal, such as tin, an alloy of tin
and aluminium, or an alloy of tin & lead, the intention being to protect the iron or
steel by an extra thick coating of a softer metal, so that the succeeding rolling of
the plates, hereinafter described, shall not unduly harden the iron or steel, so as to
render it too brittle to work easily.
The plates prepared as above are then rolled, so as to obtain upon them a smooth
and dense surface, capable of being brought to a high degree of polish with little
labour, and thus of being brought into a condition suitable to receive an ornamental
nickel or other surface, electrically deposited, which will finally polish with little
labour and without much removal of the last deposited surface.
After the plates are polished before being plated, I use lime and water to remove
any grease from the surface, rinse them in cold water, and suspend them in a
plating or electro-depositing bath, for their final ornamental plating.
The plates are then dried, and the surface is " glossed" in the usual way, and
will be found take an excellent polish with little time or labour.
Dated this 17th day of April 1893.
t
FELL & WILDING,
1, Queen Victoria Street, London, E.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Process for the Preparation of Iron or Steel Plates
for Nickel or other Plating.
I, CARL TUNSTILL JOHN OPPERMANN of 2 Wynyatt Street Clerkenwell
in the County of Middlesex Electrician 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:-
My invention relates to an improved process whereby I prepare iron or steel
plates for a polished plating of nickel or other metal, without rendering the said
plates too brittle to be afterwards worked or bent into any desired shapes and by
which I obtain an excellent polished face to the finished article with less labour
than has heretofore been done.
To carry out my invention I give the ordinary charcoal steel or iron plates
known as tin plates an extra coating of soft metal, such as tin, an alloy of tin and
aluminium, or an alloy of tin and lead the intention being to protect the iron or
steel by an extra thick coating of a softer metal so that the succeeding rolling of
[Price 8d1

page_text: the plates hereinafter described shall not unduly harden the iron or steel so as to
render it too brittle to work easily.
The extra coating of the plates may be obtained by immersing them in a vessel
containing a soft metal, as for instance an alloy of tin and lead, in a molten state.
The plates are then rolled between highly polished rollers which will give them a
very smooth surface after which they are polished by means of a rapidly revolving
polishing bob or mop which is charged with crocus powder or tripoli or any similar
polishing material.
The plates are then cleaned by means of a mixture of lime and water, which
removes the grease from the surface, and are rinsed in cold water, they are next
suspended in an electro depositing bath containing a solution in water of a salt of
the metal such as nickel, copper silver with which it is desired to coat the prepared
plates.
When a sufficiently thick coating of the metal is obtained the plates are removed
from the bath and dried in sawdust when they are again brought in contact with
the polishing bob or mop which is now to be charged with dry lime and which is
to give them their final glossing or polishing.
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 what I
claim is
(1) The extra coating of the steel or iron plates with a softer metal together
with the subsequent rolling of the same substantially as hereinbefore described.
(2) The use of lime and water as a means of cleaning the plates.
Dated this 19th day of February 1894.
CARL TUNSTILL JOHN OPPERMANN.