An Improvement in the Coating of Metals with a Metallic Alloy.
Year: 1894

page_text: Date of Application, 20th Apr., 1894
Complete Specification Left, 23rd Oct., 1894-Accepted, 12th Jan., 1895
PROVISIONAL SPECIFICATION.
An Improvement in the Coating of Metals with a Metallic Alloy.
We WILLIAM ARTHUR THOMS Electro Plater and WILLIAM HENRY
BURGUM Electro Plater both of 6 Union Square New North Road London
do hereby declare the nature of this invention to be as follows:-
This invention relates to the coating by electro deposition of articles of metal or
other suitable material with a new metallic alloy and its object is to produce upon
said articles a plating or coating of great durability having a colour that can be
regulated according to the metals that compose the electrolytic bath such colours
can be white yellow bronze red blue black or any intermediate tints.
Our said invention morcover comprises a method or process of electro depositing
the aforesaid alloy whereby we are enabled to obtain a homogeneous coating that
is to say a coating which consists of the same nature and principles throughout of
a perfect intermixture of the metals constituting the alloy to be deposited. This
process of plating is suitable for coating articles of iron steel copper brass lead
zinc aluminium &c. as a protection against oxidation against atmospheric influences
such as sulphuretted hydrogen, against the action of the chlorine contained in sea
water or mixture and as a protective coating generally against destructive agents
that articles plated with this process are likely to meet with.
As an example of this process we can make an electrolytic bath of
"
1 oz. tin converted into chloride in the ordinary manner.
oz. zinc converted into chloride in the ordinary manner.
1 oz. phosphate soda.
1
tartrate natash
Or we can take
water added to make one gancion
1 oz. tin converted into chloride.
* oz. zinc
$3
""
"
oz. cadmium converted into chloride.
1 oz. phosphate of soda.
1 oz. tartrate of potash.
Waton added to make one callon of solution.

page_text: The solution or electrolytic bath can be worked either by dynamo, battery or
other suitable electrical power or it may be used by contact with zinc and immersed
without dynamo power or other electrical current other than the zinc contact, but
in this last process the solution must have a larger proportion of metal in the
electrolytic or depositing bath-as an example we take
The solution or electrolytic bath can be worked either by dynamo, battery or
other suitable electrical power or it may be used by contact with zinc and immersed
without dynamo power or other electrical current other than the zinc contact, but
in this last process the solution must have a larger proportion of metal in the
electrolytic or depositing bath- -as an example we take
4 oz. tin converted into chloride,
oz. cadmium,
2 oz. phosphate soda,
.4 oz. tartrate potash,
With water added to make one gallon of solution.
The solution above mentioned must in all cases be used at a temperature above
75 to 80° F. but in coating articles by simple contact with zinc the temperature
must be raised the working heat should be 180° to 200° F.
The anodes can be composed of an alloy in the same or approximately the same
proportions as are desired in the alloy to be deposited for example the deposition
of an alloy composed of equal parts of same said metal so that when the articles to
be coated are placed in the electrolytic bath and placed in communication
with the electric or other current the desired deposit of metallic alloy is of the
desired composition.
The hardness can be increased or diminished by varying the proportions of
the alloy.
Dated this 20th day of April 1894.
The solution above mentioned must in all cases be used at a temperature above
75 to 80° F. but in coating articles by simple contact with zinc the temperature
must be raised the working heat should be 180° to 200° F.
The anodes can be composed of an alloy in the same or approximately the same
proportions as are desired in the alloy to be deposited for example the deposition
of an alloy composed of equal parts of same said metal so that when the articles to
be coated are placed in the electrolytic bath and placed in communication
with the electric or other current the desired deposit of metallic alloy is of the
desired composition.
The hardness can be increased or diminished by varying the proportions of
the alloy.
Dated this 20th day of April 1894.
WILLIAM A. THOMS.
WILLIAM H. BURGUM.
We WILLIAM ARTHUR THOMS Electro Plater and WILLIAM HENRY
BURGUM Electro Plater both of 6 Union Square New North Road London
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 relates to the coating by electro deposition of articles of metal
or other suitable material with a new metallic alloy and its object is to produce
upon said articles a plating or coating of great durability, having a color that
can be regulated according to the metals that compose the electrolytic bath.
Our said invention moreover comprises a method or process of electro depositing
the aforesaid alloy whereby we are enabled to obtain a homogeneous coating that
is to say a coating which consists of the same nature and principles throughout of
a perfect intermixture of the metals constituting the alloy to be deposited. This
process of plating is suitable for coating articles of iron steel copper brass lead
zinc aluminium &c. as a protection against oxidation, against atmospheric influences
such as sulphuretted hydrogen, against the action of the chlorine contained in sea
water or moisture and as a protective coating generally against destructive agents
that articles plated with this process are likely to meet with.
As an example of this process we can make an electrolytic bath of
1 oz. tin converted into chloride in the ordinary manner.
oz. zinc coverted into chloride in the ordinary manner.
1 oz. phosphate soda.
1 oz. tartrate potash or tartrate soda.
Water added to mal ona collon of colution

page_text: 1 oz. phosphate soda.
I oz. tartrate potash or tartrate soda.
Water added to make one gallon of solution.
The object being to make an alloy deposit suitable to the articles to be coated
and again an alloy that can be so manipulated that the price of coating or plating
such articles can be regulated by the addition or subtraction of the expensive
metals.
The solution or electrolytic bath can be worked either by dynamo battery or
other suitable electrical power, or it may be used by contact with zinc and immersed
without dynamo power or other electrical current other than the zinc contact.
But in this last process the solution must have a larger proportion of metal in
the electrolytic or depositing bath.
As an example we take
4 oz. tin converted into a chloride,
oz. cadmium
"
2 oz. phosphate soda.
"
4 oz. tartrate potash or tartrate soda,
With water added to make one gallon of solution.
The solutions above mentioned must in all cases be used at a temperature above
75° to 80° F. but in coating articles by simple contact with zinc the temperature
must be raised-the working heat should be 180° to 200° F.
The anodes can be composed of an alloy in the same or approximately the
same proportions as are desired in the alloy to be deposited for example the
deposition of an alloy composed of equal parts of same said metals so that when
the articles to be conted are placed in the electrolytic bath and placed in
communication with the electric or other current the desired deposit of metallic
alloy is of the desired composition.
The hardness can be increased or diminished by varying the proportions of
the alloy.
Having now particularly described and ascertained the nature of our inven-
tion and in what manner the same is to be performed we declare that what we
claim is
An electro deposition of an alloy the combination of the electrolyte compounded
in manner substantially as hereinbefore set forth and described.
Dated October 23rd 1894.
WILLIAM A THOMS.
WILLIAM H. BURGUM.