IMPROVEMENTS IN OBTAINING MOTIVE POWER
Year: 1853

page_text: LETTERS PATENT to James Anderson, of Auchnagie, in the
County of Perth, North Britain, Farmer, for the Invention of
"IMPROVEMENTS IN OBTAINING MOTIVE POWER."
PROVISIONAL SPECIFICATION left by the said James Anderson
at the Office of the Commissioners of Patents, with his Petition,
on the 19th February 1853.
J; JAMES ANDERSON, of Auchnagic, in the County of Perth, North
Britain, Farmer, do hereby declare the nature of the said Invention
for."IMPROVEMENTS IN OBTAINING MOTIVE POWER" to be as follows: -
This Invention relates to prime movers wherein air, gases, or
vapours are used as the motive medium; the air or other matter
employed for such purpose being primarily condensed to a consider-
able extent, whilst a jet of cold water or other suitable means is
employed to cool or reduce the temperature of the body being
compressed. This: treatment economises the power employed in
the compression by annihilating the evolved heat, and then when
the condensation has been completed heat is applied to the com-
pressed body so as to increase its clastic force, and render it more
fit for motive purposes on its expansion.

page_text: SPECIFICATION in pursuance of the conditions of the Letters
Patent, filed by the said James Anderson in the Great Seal
Patent Office on the 12th August 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
JAMES ANDERSON, of Auchnagie, in the County of Perth, North
Britain, Farmer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Nineteenth day of February, in
the year of our Lord One thousand eight hundred and fifty-three,
in the sixteenth year. of Her reign, did, for Herself, Her heirs
and successors, give and grant unto me, the said James Ander-
son, Her special license that I, the said James Anderson, my
executors, administrators, and assigns, or such others as I, the
said James Anderson, my executors, administrators, or 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, exercise, and vend, within
the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
OBTAINING MOTIVE POWER," upon the condition (amongst others) that
I, the said James Anderson, by an instrument in writing under
my hand and seal, 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 James Anderson, do hereby
declare the nature of my said Invention, and in what manner the
same is to be performed, to be particularly described and ascer-
tained in and by the following statement, that is to say: .
My said Invention relates to prime movers or motive power
apparatus wherein air, gases, or vapours are used as the motive
means. The air or matter to be employed for obtaining power is
primarily condensed or compressed to a considerable extent, and

page_text: during this compression or condensation a jet of cold water or
other suitable and convenient agent is employed to cool or reduce
the temperature of the air or body being compressed. Such treat-
ment economises the mechanical power employed in the compression
by absorbing the evolved heat, and when the compression has been
proceeded with to the required extent heat is applied to the com-
pressed body so as to increase its clastic force, and render it more fit
for motive purposes on its expansion in the act of actuating the
engine or motive machine in which it is employed.
It is intended, that such condensed and subsequently. heated
and clasticated body or medium shall be worked in the ordinary
manner in any motive machine as a common steam engine. For
example, the essential object of my Invention being the economic
obtainment of a convenient motive force or elastic body for use
in any machine where an elastic medium is applicable as a prime
mover.
Having now described and particularly ascertained the nature of
my said Invention, and the manner in which the same is or may
be
used or carried into effect, I may observe, in conclusion, that I do
not confine or restrict myself to the precise details or arrange-
ments which I have had occasion to describe or refer to, as
many variations may be made therefrom without deviating from
the principles or main features of my Invention; but what I
consider to be novel and original, and therefore claim as the In-
vention secured to me by the hercin-before in part recited Letters
Patent, is,
First, the system or mode of obtaining motive power as herein-
before described.
Second, the system or mode of condensing or compressing air,
gases, or vapours by the joint action of direct mechanical pressure
and cold, together with the subsequent increased elastication of the
same by the application of heat.
Third, the system or mode of obtaining a highly elastic medium
for motive power purposes by the application of a cooling process

page_text: during compression, and the application of a heating process to
increase the expansive power of the same.
In witness whereof, I, the said James Anderson, have here-
unto set my hand, and seal, this Eleventh day of August, in
the year of our Lord One thousand eight hundred and fifty-
three.
JAMES ANDERSON. (L.S.)