CERTAIN NEW AND USEFUL IMPROVE MENTS IN ELECTRICAL APPARATUSCLAIMER AND MEMORANDUM OF ALTER
Year: 1866

page_text: In the Matter of Letters Patent granted to ALEXANDER HORACE
BRANDON, of No. 13, Rue Gaillon, Paris, in the Empire of
France, for an Invention of "CERTAIN NEW AND USEFUL IMPROVE
MENTS IN ELECTRICAL APPARATUS," a communication from George
Lionel Leclanché, of Paris, in the Empire of France, and
bearing date October Tenth, one thousand eight hundred and
sixty-six, No. 2623.
DISCLAIMER AND MEMORANDUM OF ALTERATION of parts of the
Title and Specification of the said Patent proposed to be entered by the
said GEORGE LIONEL LECLANCHE, of Paris, France.
WHEREAS since the filing of the Specification of the said Patent,
by an Indenture made the Sixteenth day of July, One thousand eight
hundred and sixty-nine, between the said Alexander Horace Brandon of
the first part, and the said George Lionel Leclanché of the second part,
and duly recorded in the Office of the Commissioners of Fatents, the
said Letters Patent were transferred and made over to me, the said
George Lionel Leclanché :* .

page_text: and have likewise discovered a certain clerical error,
A
"
And whereas I have found that the second head of the Invention is
not of much practical value, and have been advised to disclaim the
same, and have further been advised that the description relating
to the first head of the Invention is as it at present stands open
in some points to misconstruction, I am therefore desirous for the
aforesaid reasons of disclaiming and amending, and I do hereby
disclaim and strike out and amend certain words in the title of the
Patent and in the said Specification, so as to confine the Invention
to the improved electrical generator aforesaid, and to render the
details of the description more satisfactory, that is to say, I alter
the title of the Patent from the plural to the singular by inserting
the article "a", before the word "certain and altering the word
" improvements" to "improvement." In the printed copy of the
Specification, at page 3, line 25, I alter the word "results" to "result"
and strike out the next following word "firstly." In the same line after
the word insolubility "I insert the explanatory words "when the pile
is at rest." At line 28 I commence an erasure at the word "secondly"
and contiune it to the end of line 31. In page 4 I strike out the
description commencing at line 20 and ending with line 9 of page 5.
In line 10, page 5. I alter the words "these applications" to "the
improvement," and after the word "representing" in line 11 I strike
out all the remaining words of the paragraph. 1 also strike out from
line 15 the words "Fig. 1 represents;" at line 19 I strike out the words
12
and insert therefor "powdered graphite," and at
N!
"hydrochlorate of ammonia" line 21
substitute for the expression
"satnrated with " the expression "absorbed into."
The paragraph commencing at line 23 and ending with line 2, page 6.
I strike out, and also the several Figures in the Drawing therein referred
10. In line 6, page 6, 1 insert after the word "must the explanatory
words "be such an one as will," and after the word "no" in the same
liue insert the word "direct." At line & I alter the expression
"rendering soluble the suboxides of manganese" into the more
intelligible expression "reducing to a soluble suboxide the peroxide of
manganese. Lastly, 1 strike out the paragraph commencing in line 11
and ending with line 14, when the Specification will read as follows:-
In the piles where sulphates of mercury, copper, and even lead are
made use of the metallic sults destined to depolarise the positive plate are
always more or less soluble, and this solubility is a permanent cause of

page_text: In my
wear to the negative metal and necessitates continual renewal.
new apparatus I have had in view the following result:-Absolute
insolubility when the pile is at rest of the depolarising substance
which is so essential that without it, any or every element of a pile must
sooner or later become unserviceable whether at work or at rest.
DESCRIPTION OF THE ELECTRICAL GENERATOR.
I take a glass jar with a large neck into which I introduce a porous
cell or vessel destined to receive a plate of carbon or graphite, such as is
obtained from the lining of gas retorts, and to which I attach a metallic
wire acting as the positive pole, and I fill the porous vessel with peroxide
manganese
A
of reduced to powder, or with a mixture of peroxide of manganese and
powdered graphite; I then fill up the jar with sand, or sawdust, or other
granulated substance which will thicken the water, and I place in the
same a plate of zinc provided with a metallic wire acting as the negative
pole; the entire mass of sand and peroxide of manganese is then
moistened with a concentrated solution of hydrochlorate of ammonia.
The conducting wires are passed through holes made in the cork or bung
which closes the neck of the jar, and in the centre of the said cork I
make a third hole into which I insert a small glass tube. When the jar
is thus closed and free from leakage it can be sealed in the usual
manner. When the wax is completely hardened I cut off the glass tube
level with the flask and I cover the hole with a small piece of sheet
india-rubber, which is secured by being stuck to the wax. When the
jar is thus closed 1 make a clean cut in the india-rubber just over the
tube, which cut acts as a valve that allows the escape of gases if requisite,
whilst it intercepts the liquid even should the jar be turned over.
A pile
formed in this manuer can be readily transported from place to place
without any of the liquid therein contained escaping. The electrical
generator consists of one or more elements of piles, constructed as above
described, the number being determined according to the electrical power
required. It is however evident that the pile would work equally well
if it were not closed but simply arranged in the ordinary manner of the
Daniell piles.
To give a clear idea of the improvement I annex to the present
description a Drawing representing in vertical section the. electrical
generator, in which A is the zinc or negative pole; A', the graphite or
positive pole; B, the little india-rubber valve; C, the wax" coating;

page_text: D, the glass tube; E, the cork; F, the flask; G, the graphite plate;
H, the porous vessel containing a mixture of peroxide of manganese and
powdered graphite; %, the zinc plate, and P, the liquid containing a
solution of hydrochlorate of ammonia, which in case it is desired to
transport the pile is absorbed into sawdust or sand.
Having thus explained the nature of my Invention, and set forth the
best means with which I am acquainted for carrying the same into
practice, I would remark in conclusion that in using in electrical piles
peroxide of manganese moistened with a liquid containing a salt in
solution, the salt must be such an one as will have no direct chemical
action on the peroxide of manganese, but must be capable by its electro.
litical decomposition of reducing to a soluble sub-oxide the peroxide of
manganese. The salt which has given me the best results is hydro-
chlorate of ammonia, I must nevertheless state that all salts with an
ammoniacal base will give good results.
In witness whereot, I, the said George Lionel Leclanché, have
hereunto set my hand and seal, the Thirtieth day of January,
in the year of our Lord One thousand eight hundred and seventy-
five.
To the Commissioners of Patents for Inventions.
I hereby grant my fiat, giving leave to the above-named George
Lionel Leclanché, to file in the Great Seal Patent Office, with the
Specification to which the same relates, the above-written Disclaimer
and Memorandum of Alteration, upon the ternis that no action shall
be brought against Mr. John Faulkner, of Manchester, in the County
of Lancaster, for anything done by him previously to the 19th day of
February last.