A New Galvanic Battery.
Year: 1893

page_text: Date of Application, 1st Feb., 1893
Complete Specification Left, 27th Oct., 1893-Accepted, 23rd Dec., 1893
PROVISIONAL SPECIFICATION.
A New Galvanic Battery.
CARL ANTON JOHANNES HUGO SCHROEDER and HEINRICH EUGEN RICHARD
SCHROEDER, Electrical Engineers, both of Whetstone House, Heslop Road,
Balham in the County of Surrey, do horoby declare the nature of this invention
to be as follows:-
A bolt of slate, porcelain, agate or other suitable material is furnished at each
end with threads, lubricated with black-lead; on one end of the bolt is screwed a
nut of the same or either of the above mentioned materials.
The bolt is then reversed in position, and an amalgamated zinc plate, pierced with
a hole of the same diameter as the bolt, is placed upon the same; this is followed
by a small plate of vulcanite, slate, or other suitable insulating material, also
pierced with a hole of the same diameter as that of the zino plate. This is followed.
by a carbon-plate of the same width but somewhat shorter than, the zinc plate, this
again, by another amalgamated zinc plate of the same size as the carbon plato, this
by an insulating plate, a carbon plate, and a zinc plate, and an insulator, and so
on alternately, until the last plate is in position, when a second nut, by which
all the plates are firmly pressed together, is screwed on the other end of the
bolt.
The last plate may be either zinc or carbon, but preferably the former.
The first and last plato is longer in one direction than the others, if a zinc plato
its upper end is to be kept free from mercury.
The first and last plate in this cell may either be both zinc plates, or both carbon
plates, or one a zinc and the other, a carbon plate; they are provided with
terminals corresponding to their material.
The complete battery-cell thus constructed when put into action is placed in a
jar or other suitable vessel of such shape that the cell fits closely in one direction
while a free space is preferably left at each side in the other. The usual height of
the jar or other vessel, employed, is the same as the height of the larger number of
plates but if the jar is considerably higher it is provided additionally with an
overflow.
Before or after the immersion of the cell the jar or other vessel is filled with the
exciting liquid; if the current is required for a longer time it is connected with a
tank, holding the liquid, by any suitable means the fresh solution continually
enters the cell and is fed off or conveyed to another tank that receives the waste or
used up solution.
The solution used may consist of any suitable exciting liquid; the best is either
our new exciting liquid of low resistance and strong oxidising power or ordinary
solution of bichromate of potash, sulphuric acid and water.
Instead of zinc and carbon in this battery any of their substitutes may also be
employed.
Dated this 31st dar of January 1893.

page_text: COMPLETE SPECIFICATION.
A New Galvanio Battery.
CARL ANTON JOHANNES HUGO SCHROEDER and HEINRION EUGEN RICHARD
SOUROEDER both of "Whetstone House," Heslop Road, Balham in the County of
Surrey, Electrical Engineers, 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 :--
On one end of a bolt of slate, porcelain, agate or other suitable material, which
is furnished at each end with a thread lubricated with blacklead, is screwed a nut
of the same or either of the just mentioned materials.
The bolt is then reversed in position, and an amalgamated zino plato, pierced
with a hole of a trace larger diameter as the bolt, is placed upon the same; this is
followed by a small plate of vulcanite, slate or other insulating material, also
pierced with a hole of the same diameter as that of the zinc plate. This is followed
by a carbon plate of the same width but somewhat shorter than the zinc plate and
likewise pierced with a holo as the zino plato, this again followed by another
amalgamated zinc plate of the same size as the carbon plate, this again by an
insulating plate, this by a carbon plate, a zinc plate, and an insulator, and so ou
alternately, until the last plate is in position when a second nut, by which
all plates are firmly pressed together, is screwed on the other end of the bolt.
The last plate may be either zine or carbon, but preferably the former. The
first and last plate is longer in ono direction than the others, if it is a zinc plate its
upper end is to be kept free from mercury.
The first and last plate in this cell may either be both zinc plates, or both
carbon plates, or one a zino aud the other a carbon plato; they are provided with
terminals corresponding to their material:
The complete battery-cell thus constructed when put into action is placed in a jar
or other suitable vessel of such shape that the cell fits nearly close in one direction
while a free space is preferably left at each side in the other.
The usual height of the jar or other vessel, employed, is the same as the height
of the larger number of plates but if the jar is considerably higher it is provided
additionally with an overflow.
Before or after the immersion of the cell the jar or other vessel is filled with the
exciting liquid. If the current is required for a considerable length of time it is
connected with a tank that holds the liquid; by any suitable ineans the fresh
solution continually enters the cell and is fed off or conveyed to another tank that
receives the waste or used up solution.
The solution used may consist of any suitable exciting liquid; the best is either
our new exciting liquid of low resistance and strong oxidising power.described in
our English Patent Specification No. 23101/ or ordinary solution of bichromate of
potash, sulphuric acid and water.
Instead of zino plates in this battery we preferably use our new battery plates
which consist of a large number of thin alloy plates that are amalgamated and are
united to a single plate by great pressure as described and claimed in our Patent
Specification No. 22956 of 1893; however instead of zinc and carbon in this battery
any of their substitutes may be employed.
Having now particularly and substantially described and ascertained the nature
of our said invention and in what manner the same is to, be carried out aud
applied we declare that what we claim is:
1. The invention of a new battery cell in which a number of positive and
negative plates are so arranged that if immersed in a single undivided vessel
containing the exciting fluid, an electric current of high tension is generated or
obtained substantially as described.

page_text: 2. The application to this new battery of an arrangement consisting of two
tanks or a number of tanks by which a continual fresh supply of fluid is maintained
as long as the electric current is required, substantially as described.
Dated this 27th day of October 1893.
CARL ANTON JOHANNES HUGO SCHROEDER.
HEINRICH EUGEN RICHARD SCHROEDER.