Improved Means for the Production of White Lead.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improved Means for the Production of White Lead.
We, ERNEST BAILEY, Electrician, of Burton Lane, GEORGE REEVE Cox, Mer-
chant, of Beech Villa, Holgate, and WALTER THOMAS HEY, of Low Ousegate,
Chemist, all in the City and County of York, do hereby declare the nature of this
invention to be as follows:-
The metallic lead to be volatalised is in a vessel or receiver the metal being
connected to the positive pole of electric generator and a bored carbon pole to
the negative pole of generator which carbon is supported and regulated with a
screw for the purpose of keeping the required distance apart from the metal to
form the arc and fuse the metal producing the oxide fumes.
The required compounds steam compressed air carbonic acid gases passing
through the bored carbon conductor onto the crator or fused metal and combining
with the metallic fumes.
The apparatus is hermetically sealed and a direct rapid process of conversion
the compound fumes being forced into a condensor or receiver and there being
deposited in a fine powdered state.
ERNEST BAILEY.
GEO. R. COX.
WALTER THOS. HEY.
Improved Means for the Production of White Lead.
We, ERNEST BAILEY, of Burton Lane, Electrician, GEORGE REEVE Cox, of Beech
Villa, Holgate, Merchant, and WALTER THOMAS HEY, of Low Ousegate, Chemist,
all in the City and County of York, 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 refers to the production of white lead from pig lead; the object

page_text: being to dispense with grinding, washing, drying, and other processes, and thus
to produce the white lead in a more direct and rapid manner than heretofore.
In order that our invention may be clearly understood, we will proceed to
describe the same with reference to the accompanying drawing, in which the
various parts are denoted by various letters of reference.
According to our invention, we employ a closed vessel A for the reception of
the lead to be volatilised, and a furnace B is provided for the purpose of bring-
ing the lead to the required degree of heat. C is a bored carbon pole, which is
suspended by means of a bracket D and regulating screw. E to a bridge I, and
the central hole in the carbon C is connected with a tube G which conducts the
required steam and gases to the interior of the vessel A. The gases are mixed
together in a vessel H, the steam being conducted to the lower part of the
vessel H by means of a pipe J, where it plays on the surface of a solution of acetic
acid K. L is an inlet pipe for the admission of carbonic acid gas to the vessel H,
and the mixture of the carbonic acid gas, steam, and acetic acid vapour passes off
by the pipe G. M is an outlet tube from the vessel A, and N are pending spouts
to which are attached flannel collecting bags P. R is the positive pole of an
electric circuit which is connected to the vessel A, and S is the negative connec-
tion of the same circuit which is connected to the bracket D of the carbon C.
The pig lead is placed in the vessel A, where it is brought to the required
molten state by the furnace B, and the carbon C is then adjusted to the required
position by means of the regulating screw E. The steam and carbonic acid gas
are then turned on and a mixture of the requisite gases passes through the
pipe G to the centre of the carbon C, the said mixture being delivered on the
surface of the molten lead. An electric current, which is obtained from an
electro generator or accumulator, passing from the connection R to the connec-
tion S, forms an arc between the carbon C and the surface of the molten lead,
thereby volatilizing the lead, and the fumes combine with the compound gases
entering the vessel A by the pipe G and pass to the outlet tube M, along which
they travel and descend into the collecting bags P, where they condense and settle
in a finely divided state.
The height of the molten lead in the vessel A may be maintained constant by
means of a separate supply tank, to which it is connected by a ball cock or other
suitable connection.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. In the production of white lead from pig lead, the employment of a closed
vessel containing molten lead and an electric arc between the surface of the metal
and a carbon conductor, in combination with an inlet tube supplying the required
gases and an outlet tube for conducting the combined fumes and gases to a con-
denser, substantially as set forth.
2. In the production of white lead from pig lead, the employment of a closed
vessel containing molten lead carrying an electric current which passes in the
form of an arc to a bored carbon suspended over the lead, in combination with a
tube carrying a supply of gases and steam to the centre of the carbon and an
outlet conducting the combined fumes and gases to a condenser, substantially as
set forth.
3. In the production of white lead from pig lead, the combination of the closed
vessel A, furnace B, carbon C with means for adjusting the same, and an electric
current passing from the contents of the vessel A to the carbon B, substantially
as and for the purposes set forth.
4. In the production of white lead from pig lead, the vessel H having a pipe J
admitting steam onto a solution of acetic acid K and a pipe L for the admission
of carbonic acid gas, in combination with a closed apparatus for volatilizing lead,
substantially as and for the purposes set forth.

page_text: 5. The general arrangement, construction and combination of the various parts
forming our improved process for the production of white lead, substantially as
and for the purposes set forth.
יד
.
201
7
1000
BREWER & SON,
London and Leeds, Agents for the Applicants.