Improvements in Electrical Batteries.
Year: 1892

page_text: Date of Application, 3rd Mar., 1892
Complete Specification Left, 3rd Dec., 1892 Accepted, 4th Jan., 1893
PROVISIONAL SPECIFICATION.
· Improvements in Electrical Batteries.
We FRANÇOIS MARIE ARTHUR LAURENT-CÉLY and ETIENNE FINOT both of
59. Rue de Provence, Paris in the Republic of France Electricians do hereby
declare the nature of this invention to be as follows:-
The employment of peroxide of lead in primary batteries was first mentioned in
1843 by Wharton and De le Rive.
A porous pot was used containing a thin plate of platinum around which peroxide
of lead was tightly packed. The outer pot contained a plate of amalgamated zinc
and acidulated water. This battery had a great E.M.F. but, also, a high internal
resistance.
The positive element or plate of our battery consists of a sheet or frame of
lead with openings into which peroxide lead is pressed. We may use, a pressure
equal to 12 tons per square inch.
In order to prevent disintegration we may add 4% or more or less of litharge
and some sulphuric acid. This mixture is subjected to pressure. Under these
conditions sulphate of lead is formed which prevents disintegration. We may
also use peroxide of lead and 4%, or abont, litharge and, or, a concentrated
solution of sodium sulphate or magnesium sulphate. Here, again, sodium sulphate
is formed and some soda or magnesia are set free. Acidulated water removes these
by washing and gives a high porosity to the peroxide.
The negative element or plate is amalgamated zinc.
The battery or cell is made by putting a sufficient number of positive and negative
plates into a box with acidulated water.
.
.
It is advisable to place asbestos woven or otherwise against the positive plates
(or elements) or say between the positive and negative-so as to prevent short
circuiting and secure the least internal resistance and the smallest space.
Any other suitable fibrous, woody or otherwise material may be used instead of
asbestos.
We find it convenient sometimes to mix sulphuric acid and sodium silicate for the
exciting liquid which forms a gelatinous mass.
The E.M.F. of this battery is 2:45 volts and its internal resistance is very low.
The battery is admirably adapted for working bells, portable lights, telephones.
telegraphs &c.
Dated this 3rd day of March 1892.
FRANÇOIS MARIE ARTHUR LAURENT-CÉLY.
..
COMPLETE SPECIFICATION.
Improvements in Electrical Batteries.
We FRANÇOIS MARIE ARTHUR LAURENT-CELY and ETIENNE FINOT both
of 59 Rue de Provence, Paris in the Republic of France. Electricians 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 :-
The employment of peroxide of lead in primary batteries was first mentioned in
1843 by Wharton and De la Rivé.
A porous pot was used containing a thin plate of platinum around which peroxide
of lead was tightly packed. The outer pot contained a plate of amalgamated zine

page_text: and acidulated water. This battery had a great E.M.F. but, also, a high internal
resistance.
The positive element or plate of our battery consists of a sheet or frame of lead
with openings into which peroxide is pressed. We may use a pressure equal to
12 tons per square inch.
In order to prevent disintegration we may add 4% or more or less of litharge
and some sulphuric acid. This mixture is subjected to pressure. Under these
conditions sulphate of lead is formed which prevents disintegration. We may also
use peroxide of lead & 4%, or about, litharge and, or, a concentrated solution of
sodium sulphate or magnesium sulphate. Here again lead sulphate is formed and
some soda or magnesia are set free. Acidulated water removes these by washing
and gives a high porosity to the peroxide.
The negative element or plate is amalgamated zinc.
The battery or cell is made by putting a sufficient number of positive and negative
plates into a box with acidulated water.
It is advisable to place asbestos woven or otherwise against the plates (or elements)
or say between the positive and negative-so as to prevent short circuiting and
secure the least internal resistance and the smallest space.
Any other suitable fibrous woody or otherwise material may be used instead of
asbestos.
We find it convenient sometimes to mix sulphuric acid and sodium silicate for the
exciting liquid which forms a gelatinous mass.
The E.M.F. of this battery is 2:45 volts and its internal resistance is very low.
The battery is admirably adapted for working bells, portable lights telephones,
telegraphs &c.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same. is to be performed, we declare that what we
claim is.
First. In the construction of primary electrical elements the combination of a
positive plate (or plates) containing peroxide of lead, with amalgamated zinc as
the negative plate or plates and with acidulated water substantially as and for the
purposes described.
Secondly. The arrangement in Claim in combination with the arrangements
herein before described for the purpose of preventing disintegration substantially as
and for the purposes hercinbefore described.
Thirdly. The arrangements as specified in Claims 1 and 2 in combination with
the arrangements hereinbefore described for the purpose of giving a high porosity,
preventing short circuiting and obtaining a low internal resistance substantially as
and for the purposes hereinbefore described.
Dated this 3rd day of December 1892.
FRANÇOIS MARIE ARTHUR LAURENT-CÉLY.
ETIENNE FINOT.