AN IMPROVED METHOD OF COATING OR COVERING METAL SURFACES WITH OTHER METAL OR ALLOY
Year: 1881

page_text: LETTERS PATENT to Henry Harris Lake, of the Firm of Haseltine, Lake,
& Co., Patent Agents, Southampton Buildings, London, for an Invention of
"AN IMPROVED METHOD OF COATING OR COVERING METAL SURFACES WITH
OTHER METAL OR ALLOY." A communication from abroad by Hermann
Reusch, of Dillingen on the Saar, Germany.
PROVISIONAL SPECIFICATION left by the said Henry Harris Lake at the
Office of the Commissioners of Patents on the 12th October 1881.
"
HENRY HARRIS LAKE, of the Firm of Haseltine, Lake, & Co., Patent Agents,
Southampton Buildings, London. "AN IMPROVED METHOD OF COATING OR
COVERING METAL SURFACES WITH OTHER METAL OR ALLOY." [A communication
from abroad by Hermann Reusch, of Dillingen on the Saar, Germany.]
The coating or plating of iron or steel with metals or alloys which are tensile at
red-heat, without the use of a flux for uniting the two metals, has the dis-
advantageous consequence that by reason of the oxidation of iron and steel (which
it is extremely difficult to avoid when these metals are heated) there are many
parts or places at which the iron or the steel is either not connected at all, or but
very insufficiently connected, with the superimposed metal or alloy, this defect
causing considerable waste in the working of the coated metal. By means of my
present Invention I obviate this difficulty as follows, viz. :-After having cleaned
the iron or steel plate or other article to be coated from the oxides or other
impurities adhering thereto, I cover or coat the same with a thin film of
tin, or with an easily fusible alloy of tin, and then I place the plate or
other article in the metal with which it is to be coated or plated, and the plate
being thus prepared it is heated to a red heat in a reducing flame, and is rolled
out between smooth well-cooled rollers until it is reduced to the required
thickness.

page_text: I proceed in a similar manner when it is desired to combine metals or alloys
which are tensile at a red heat, for instance, when coating copper with silver and
the like.
The coating or plating is facilitated if the iron or steel surface, after having been
cleaned, is lightly covered by brushing or dusting over the same some chloride of
zinc, salammoniac, or other metal chloride which volatilizes at a red heat, and
which is for this purpose either dissolved in water or pulverized; the iron or steel
to be coated is then covered with tin-foil and placed in the metal or alloy to be
superimposed upon the said iron or steel, and the heating and rolling out are
afterwards proceeded with.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Henry Harris Lake in the Great Seal Patent Office on the
6th April 1882.
HENRY HARRIS LAKE, of the Firm of Haseltine, Lake, & Co., Patent
Agents, Southampton Buildings, London. "AN Improved METHOD OF COATING
OR COVERING METAL SURFACES WITH OTHER METAL OR ALLOY." A communication
from abroad by Hermann Reusch, of Dillingen-on-the-Saar, Germany.
The coating or plating of iron or steel with metals or alloys which are tensile at
a red-heat, without the use of a flux for facilitating the unison of the two metals,
has the disadvantage that by reason of the oxidation of iron and steel (which is
extremely difficult to avoid when these metals are heated) there are many parts or
places at which the iron or steel is either not united at all, or but very insufficiently
united, with the superimposed metal or alloy, this defect causing considerable
waste in the working of the coated metal. By means of my present Invention I
obviate this difficulty as follows, that is to say:-After having cleaned the iron or
steel plate or other article to be coated from the oxides or other impurities
adhering thereto, I cover or coat the same with a thin film of tin, or of an easily
fusible alloy of tin, and then place the plate or other article in the metal with
which it is to be coated or plated, and the plate being thus prepared is heated to a
red heat in a reducing flame, and is rolled out between smooth well-cooled rollers
until it is reduced to the required thickness.
I proceed in a similar manner when it is desired to unite metals or alloys which
are tensile at a red heat, for instance, when coating or plating copper with silver
and the like.
The coating or plating is effected more advantageously, and the welding facilitated
if the iron or steel surface after having been cleaned is lightly covered by spreading
or sprinkling over the same some chloride of zinc, sal ammoniac, or other metal
chloride which volatilize at a red heat, and which is for this purpose either
dissolved in water or pulverized; the iron or steel to be coated is then covered
with tin-foil and placed in the metal or alloy to be super-imposed upon the said
iron or steel, and the heating and rolling out are afterwards proceeded with.
Having thus fully described the said Invention, as communicated to me by my
foreign correspondent, and the manner of performing the same, I wish it understood
that I claim,
The method substantially as herein before set forth of coating or covering iron,
steel, or other metal with a metal or alloy which is tensile at a red heat by
employing on the surface of the metal to be coated a film of tin or of an alloy of
tin, preferably in the form of tin-foil, and preferably in combination with powdered
or dissolved chlorides so as to facilitate the welding.
In witness whereof, I, the said Henry Harris Lake, have hereunto set my
hand and seal, this Fifth day of April, in the year of our Lord One
thousand eight hundred and eighty two.
HENRY H. LAKE. (LS.)