Improvements in Sheet Metal Baths.
Year: 1898

page_text: Date of Application, 2nd Mar., 1898
Complete Specification Left, 1st Dec., 1898-Accepted, 14th Jan., 1859
PROVISIONAL SPECIFICATION.
Improvements in Sheet Metal Baths.
I, JOHN WILLIAM SANKEY, of the Firm of Joseph Sankey and Sons, of Albert
Street Works, Bilston, in the County of Stafford, Sheet Metal Workers and.
Japanners, do hereby declare the nature of this invention to be as follows:-
A sheet metal bath constructed according to this invention, is formed of sheet iron
or steel having the inner face coated or lined with a different metal such for
instance as copper or aluminium, in a manner which ensures that the coating metal
will be firmly adherent throughout to the iron or steel. The iron or steel may be
coated in this manner previously to being formed up into a bath, and the coating
may be effected by electro deposition or by pressure, such as between rolls; or
the coating way be effected subsequently to the iron or steel being formed up into
a bath. The sheet iron or steel may be coated with two or more layers of different
metals, as for instance, with a coating of copper first, in case it is desired to electro
deposit nickel, and then with a layer of nickel.
Dated this 1st day of March 1898.
STEPHEN WATKINS,
Wolverhampton, Agent for the Applicant.
Improvements in Sheet Metal Baths.
I, JOHN WILLIAM SANKEY, of the Firm of Joseph Sankey and Sons, of Albert
Street Works, Bilston, in the County of Stafford, Sheet Metal Workers and
Japanners, 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 for its object to construct a sheet iron or steel bath with an
interior layer or layers or coating or coatings of different metal or metals in such
manner that no crevice or division will occur between the sheet iron or steel and
the lining or coating next thereto or between such lining or coating and an outer
one, whereby any denting of the interior surface will be avoided which can be
resisted by the sheet iron or steel, and whereby the inner surface of the sheet iron
or steel will be securely protected against corrosion.
The above object is accomplished, according to this invention, by applying a layer
or coating of different metal, such for instance as copper or aluminium, in a
manner as hereinafter described, which ensures that it will be firmly adherent
throughout to the iron or steel, and, when required, applying a further coating of
another metal, such as tin or nickel (if the first coating has been copper), to the
surface of the coating already laid on. The sheet iron or steel may be coated in
the manner of this invention previously to being formed into a bath, or the coating
may be effected subsequently to the iron or steel being formed into a bath.

page_text: The coatings may, in the case of metals which admit thereof, be electro-deposited
upon the surface of the sheet iron or steel and (when second coatings are
required) upon the surface of one another; and, in cases in which the metals admit
thereof, may be put on by rolling under pressure (but in such case prior to the
sheet metal being built up into a bath) or, a first coat may be rolled on under
pressure and a second coat be put on by rubbing; and, in some cases, a coating of
metal may be electro-deposited upon the surface of the iron or steel and a coating
of another metal be adherently fixed to the electro-deposited coating, by a rolling
pressure, or rubbing, or the first coating may be rolled on and the outer coating
be electro-deposited thereon either before or after the rolling.
It is not possible to describe the whole of the metals which may be dealt with
by this invention and the various ways within the scope of the above description
in which they may be applied to effect the result above stated. I will, therefore,
give some instances of the commoner forms in which the invention will be applied,
when other applications to meet requirements which will be less frequently pre-
sented in actual experience will be readily understood by persons skilled in the
arts to which the invention relates.
The sheet iron or steel may be coated by simply electro-depositing copper there-
upon, either before or after it is made up into a bath, and the surface of the copper
be polished and form the interior surface of the bath except for any coat of paint
or enamel or the like which it may be desired to lay thereon; or a coating of
nickel may be electro-deposited upon the coating of copper (but only after the sheet
metal has been built up into a bath, as the bending of the metal tends to crack
nickel which has been previously deposited and the surface of nickel be polished,
in which case of course the copper surface would not be polished; or, in lieu of
depositing nickel upon the copper, tin may be coated thereupon in the ordinary
manner, and the coating metal then be wheeled and the surface of the tin planished
to amalgamate it with the copper and give a uniformly smooth surface, the surface
of the tin being finally polished.
Thin sheet nickel may be adherently laid on to the surface of the sheet iron or
steel by rolling it under pressure.
The coating metal, adhering closely throughout to the sheet iron or steel,
securely prevents any moisture getting between itself and the iron or steel, and thus
thoroughly protects the surface of the iron or steel from corrosion; and, moreover,
as there is no space between the coating metal and the iron or steel, or between two
layers of coating metal, the interior surface of the bath cannot be indented by any
blow or pressure which is not of such force as to indent, also, the backing or sup-
port of iron or steel.
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. A bath tub composed of a sheet iron or steel casing having a lining of other
metal, such as copper, aluminium, or the like, adherently fixed thereto throughout
by electro-deposition or by rolling pressure, substantially as described.
2. A bath tub composed of a casing of sheet iron or steel having a lining of other
metal, such as copper, aluminium, or the like, adherently fixed throughout by
electro-deposition or by rolling pressure, and a secondary lining adherently fixed.
throughout to the primary lining by electro-deposition, rolling pressure, or rubbing,
substantially as described.
Dated this 30th day of November 1898.
STEPHEN WATKINS,
Wolverhampton, Agent for the Applicant.