IMPROVEMENTS IN THE MANUFACTURE OF ELECTRODES FOR PRIMARY ELECTRIC BATTERIES
Year: 1884

page_text: I THOMAS ROWAN, of Palace Chambers, in the city of Westminster, Consulting
Engineer do hereby declare the nature of the said invention for "IMPROVEMENTS
IN THE MANUFACTURE OF ELECTRODES FOR PRIMARY ELECTRIC BATTERIES" to be
as follows:-
This invention relates to improvements in the manufacture or construction of
electrodes for primary electric batteries the improvements having for object to
obtain a maximum of active surface.
For this purpose I employ zinc in a suitable state of division and form it into
plates, or I cause the divided zinc in the form of paste or otherwise to adhere to a
framework of zinc of any desired configuration; the zinc may be amalgamated
when required either before or after its formation into electrodes.
In some cases I employ spongy iron forming it into an electrode as above
described, or oxydo of iron may be similarly employed.
I also form an electrode in a similar manner by using black oxyde of copper or
copper precipitate, the framework employed being either of copper or lead coated
with copper and the copper precipitate may be precipitated either chemically or
electrically.
I have also found that electrodes made as above described but with oxydes of
aluminium or of silver give good results.
Carbon may also be employed for the framework of the electrode, on which
framework I electrically deposit silver, copper, aluminium or other suitable metal.
Dated this cleventh day of January 1884.
THOMAS ROWAN.
By G. F. Redfern,
Agent.

page_text: I THOMAS ROWAN of Palace Chambers in the City of Westminster Consulting
Engineer do hereby declare the nature of my invention for IMPROVEMENTS IN THE
MANUFACTURE OF ELECTRODES FOR PRIMARY ELECTRIC BATTERIES 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 improvements in the manufacture or construction of
electrodes for primary electric batteries the improvements having for object to
obtain a maximum of active surface.
For this purpose 1 employ zine in a suitable state of division and form it into
plates, or I cause the divided zinc in the form of paste or otherwise to adhere to a
framework of zinc of any desired configuration; the zinc may be amalgamated
when required either before or after its formation into electrodes.
In some cases I employ spongy iron forming it into an electrode as above
described or oxyde of iron may be similarly employed.
I also form an electrode in a similar manner by using black oxyde of copper or
copper precipitate the framework employed being either of copper or lead coated
with copper and the copper precipitate may be precipitated either chemically or
electrically.
I have also found that electrodes made as above described but with oxydes of
aluminium or of silver give good results.
Carbon may also be employed for the framework of the electrode, on which
framework I electrically deposit silver copper aluminium or other suitable metal.
This invention relates to improvements in the manufacture or construction of
electrodes for primary electric batteries the improvements having for object to
obtain a maximum of active surface.
(a) For this purpose I employ zinc in a suitable state of division and form it
into plates, or I cause the divided zinc in the form of paste or otherwise to adhere
to a framework of zinc of any desired configuration, the zinc may be amalgamated
when required either before or after its formation into electrodes. In carrying
this into practise I may employ zinc finely granulated or zinc filings or borings
which are mixed with any suitable cementing agent and formed or moulded into
plates of any desired configuration or made to adhere to a framework or support of
zine of any desired configuration the zinc being amalgamated when required either
before or after its formation into electrodes, or zinc may be treated with inercury
so as to reduce it to a proper stato of division and then mixed with a suitable
cementing agent and formed or moulded into electrodes as above described.
(b) In some cases I employ spongy iron forming it into electrodes as above
described, or oxyde of iron may be similarly employed. The spongy iron may be
made by reducing or deoxidizing iron oxyde by the action of hydrogen at a suitable
temperature, or iron oxyde may be mixed with pulverized or powdered carbon and
subjected to heat with exclusion of air or oxidizing agents. The oxyde of iron
may be formed by simply exposing plates of iron or iron gauze of any desired
configuration to the action of damp air or steam, or precipitated oxydo of iron or
oxidized iron borings or turnings in a suitable state of division may be formed
into plates or secured to or with a suitable base or framework.
(c) I also form an electrode by using black oxyde of copper or copper precipitate
mixed with some suitable cementing agent to form a paste which can be secured to
or supported by a framework either of copper or lead coated with copper, or the
copper precipitate may be precipitated either chemically or electrically upon
such base.

page_text: (d) In some cases I employ electrodes made with oxydes of aluminium or of
silver secured to a suitable base or support constructed as above described.
(e) In some cases I employ carbon for the framework or base of the electrode on
which framework or base I electrically deposit silver copper aluminium or other
suitable metal. It will be understood that such deposit can either bo as the metallic
oxyde precipitate or metal.
Having now particularly described and ascertained the nature of my said
Invention, & in what, manner the same is to be performed, I declare that what
I claim is
Electrodes of primary electric batteries constructed or formed substantially as
hercin set forth in the respective paragraphs indicated by letters of reference
a. b. c. d and e.