IMPROVEMENTS IN OBTAIN- ING ELECTRO MOTIVE POWER
Year: 1858

page_text: LETTERS PATENT to Pierre Blaise Emile Martin, of Paris, in the French
Empire, Civil Engineer, for the Invention of "IMPROVEMENTS IN OBTAIN-
ING ELECTRO MOTIVE POWER."
PROVISIONAL SPECIFICATION left by the said Pierre Blaise Emile
Martin at the Office of the Commissioners of Patents, with his Petition,
on the 18th June 1858.
I, PIERRE BLAISE EMILE MARTIN, of Paris, in the French Empire, Civil
Engineer, do hereby declare the nature of the said Invention for "IMPROVE-
MENTS IN OBTAINING ELECTRO MOTIVE POWER," to be as follows:-
My Invention consists in obtaining motive power from the expansion or
dilitation produced by the combustion by means of the electric spark of a
mixture of combustible gas and air, or by the combustion and decomposition
by the electric spark of combustible gas, air, and water vaporised.
The gases or vapors may be employed to produce motive power in the same
manner as steam is now or may be applied.
5
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Pierre Blaise Emile Martin in the Great Seal Patent Office
on the 18th December 1858.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, PIERRE.
BLAISE EMILE MARTIN, of Paris, in the French Empire, Civil Engineer, send
greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eighteenth day of June, in the year of our Lord One
thousand eight hundred and fifty-eight, in the twenty-first year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Pierre Blaise Emile Martin, Her special licence that I, the said Pierre Blaise
Emile Martin, my executors, administrators, and assigns, or such others as I,
the said Pierre Blaise Emile Martin, my executors, administrators, and
assigns, should at any time agree with, and no others, from time to time
and at all times thereafter during the term therein expressed, should and
lawfully might make use, excrcise, and vend, within the United Kingdom
of Great Britain and Ireland, the Channel Islands, and Isle of Man, an
Invention for "IMPROVEMENTS IN OBTAINING ELECTRO MOTIVE POWER," upon
the condition (amongst others) that I, the said Pierre Blaise Emile Martin, my
executors or administrators, by an instrument in writing under ny, or their,
or one of their hands and seals, should particularly describe and ascertain
the nature of the said Invention, and in what manner the same was to be
performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the
said Letters Patent.
NOW KNOW YE, that I, the said Pierre Blaise Emilo Martin, do
hereby declare the nature of my said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and
by the following statement thereof, reference being had to the Drawings
hereunto annexed, that is to say :-
My Invention consists in obtaining motive power by means of the expansion:
or dilatation produced in a mixture of combustible gas and air, on the same
being put into a state of combustion by the electric spark, either with or
without the aid of steam generated by the combustion of the said gas and air,
or of steam otherwise generated. The heated dilating gases may be applied
to heat a steam boiler, or the gases and vapour combined may be employed in
the same manner as ordinary steam to produce motion in pistons, &c., or to
produce motion by direct reaction upon fluids, for propelling vessels or other-
wise, or they may be used for projecting projectiles, and for any other purposes
to which such sources of power are or may be applicable.
In the Drawings hercunto annexed I have illustrated the best general s
methods with which I am acquainted for carrying my Invention into effect.
Figure 1 is a side elevation, partly in section, of an arrangement of
apparatus adapted for the purpose; and Figure 2 is a plan of the same. A is
a reservoir of combustible gas; B, B, are battery cells for generating the

page_text: electric current; and p is an induction coil through which the current is
passed, in order to produce the required spark between the points of the wires
d, d. a is a conical vessel into which the air is either drawn or forced, if need
be, through the pipe b, and the combustible gas through the pipe c; e, e, aro
pipes through which water enters. The vessel a, and the other parts before
mentioned, are shown enlarged and in section in Figure 3, and in a modified
form in Figure 4; a supplementary vessel or compartment n, closed by a
valve g, being shewn in the latter Figure. On regulated portions of air, com-
bustible gas, and water entering the vessel, the battery current is sent through
the coil. An electric spark is thus produced between the points d, d; the gas
and air are thereby ignited, and the heat thus generated converts the water
into steam. The mixed steam and gases are then admitted into a working
cylinder, or allowed to force open the hinged valve g, Figure 4, and react
upon the fluid on the opposite side of it, as the case may be; or are used in
any other suitable manner as may be required. As soon as the internal
pressure is removed or sufficiently reduced, the valve g closes, and the process
is repeated, and so on as frequently and as rapidly as may be necessary.
And having now described the nature of the said Invention, and in what
manner the same may be performed, I declare that I do not confine myself to
any particular forms or dimensions of apparatus; but I claim the method of
obtaining motive power by means of the heat and the expansion or dilatation
produced in a mixture of combustible gas and air, on the same being put into
a state of combustion by the electric spark, either with or without the aid of
steam generated by the combustion of the said gas and air, or of steam
otherwise generated as herein-before described.
In witness whereof, I, the said Pierre Blaise Emile Martin, have hero-
unto set my hand and seal, this Thirteenth day of December, One
thousand eight hundred and fifty-eight.
30 Witness,
CH. ARMENGAUD,
Ing* Civil,
Boulevard de Strasbourg, No. 23,
á Paris.
P. B. E. MARTIN. (L.B.)