IMPROVE- MENTS IN STEAM ENGINES."
Year: 1863

page_text: LETTERS PATENT to Jean Pierre Florimond Datichy, of Margaret Street,
in the County of Middlesex, Engineer, for the Invention of "IMPROVE-
MENTS IN STEAM ENGINES."
PROVISIONAL SPECIFICATION left by the said Jean Pierre Florimond
Datichy at the Office of the Commissioners of Patents, with his Petition,
on the 23rd February 1863.
I, JEAN PIERRE FLORIMOND DATICHY, of Margaret Street, in the County of
Middlesex, Engineer, do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN STEAM ENGINES," to be as follows:-
My Invention consists in utilizing the steam after it has produced its effect
in the cylinders of steam engines, by passing it into and through condensing
apparatus, consisting of tubes surround by water alone, air alone, or by air
and water, the air being forced in by a fan or blast, and the water, when water
is used, being allowed to trickle down the outside of the tubes in a case sur-
rounding the same, which water rises, overflows, and entering a double casing,
escapes therefrom, and is returned to the supply cistern. The steam, being
more or less condensed, is forced by suitable pumps into the boiler directly or
through a coil in or round the casing of the boiler, whereby it becomes heated
before entering the boiler. The condensers consist of jacketted cylinders con-
taining within them another casing, in which are tubes, into. which tubes the
waste steam from the cylinders is made to enter..

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Jean Pierre Florimond Datichy in the Great Seal Patent
Office on the 21st August 1863.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JBAN
PIERRE FLORIMOND DATICHY, of Margaret Street, in the County of Middlesex,
Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-third day of February, in the year of our
Lord One thousand eight hundred and sixty-three, in the twenty-sixth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Jean Pierre Florimond Datichy, Her special licence, that I,
the said Jean Pierre Florimond Datichy, my executors, administrators, and
assigns, or such others as I, the said Jean Pierre Florimond Datichy,
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, exercise,
and vend, within the. United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
STEAM ENGINES," upon the condition (amongst others) that I, the said Jean
Pierre Florimond Datichy, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should particu-
larly describe and ascertain the nature of the said Invention, and in what
..manuer 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 imme-
diately after the date of the said Letters Patent.
.
NOW KNOW YE, that I, the said Jean Pierre Florimond Datichy, do
liereby 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 utilizing the steam after it has produced its effect
in the cylinders of steam engines, by passing it into and through condensing
apparatus, consisting of tubes surrounded by water alone, air alone, or by air
and water, the air being forced in by a fan or blast, and the water, when water
is used, being allowed to trickle down the outside of the tubes in a case sur-
rounding the same, which water rises, overflows, and entering a double casing,
escapes therefrom, and is returned to the supply cistern. The steam being
more or less condensed, is forced by suitable pumps into the boiler directly or

page_text: through a co m or round the casing of the boiler, whereby it becomes heated
before entering the boiler. The condensers consist of jacketed cylinders, con-
taining within them another casing in which are tubes, into which tubes the
waste steam from the cylinders is made to enter; or I reverse the position of
the steam and of the air and water, or air or water, that is to say, I cause the
air and water, or air alone, or water alone, to pass through tubes con-
tained in a easing or cylinder into which the steam to be condensed is
admitted.
Figure 1 of the accompanying Drawings is an elevation; Figure 2 a plan,
Figure 3 a section through the line c, d, of Figure 2, and Figure 4 a section
through the line a, b, of Figure 3, of a condensing apparatus and parts con-
nected therewith, constructed according to my Invention.
H is a chamber in which the condensation of the waste steam. is effected;
A is a pipe leading the waste steam into the chamber H; V, Figure 3, is a
fan for forcing in air, and T, the fan pipe; T', Figure 1, pipe for the intro-
duction of water; T", reservoir for air and water; t, t, t, are tubes through
which the air and water descend into a receiver G; p is a perforated plate
separating the tubes t, t, t, and through which the air and water re-ascend into
other tubes t, t, t¹, encasing the tubes t, t, t, and which lead the air and water
into an outlet case or chamber B, Figure 3; F is a pipe for the escape of the
air, and a pipe for the passing off of the water; K is a chamber protecting
the bottom of the chamber H from contact with the external air; P is a
suction pump for the condensed steam, and m the suction pipe of the same;
n, force pipe of the pump P; L, atmospheric column; P, pump for forcing
the steam into the boiler; O, suction pipe on the column L; O', pipe through
which the condensed steam is forced into the boiler; a, shaft for the trans-
mission of motion; S, frame supporting the apparatus; d, emptying cock of
the receiver G of the tubes t, t, t, and t, t, t, and of the case B; D, emptying
plug of the chamber H.
The action is as follows:-The steam from the cylinders of the engine enters
the chamber H through the pipe A, and becomes partially condensed by
immediate contact with the tubes t', t, t, which are kept cool by a current of
a mixture of air and water, or air alone, or water alone. The air is forced in
by the fan V through the pipe T, and the water enters by the pipe T. The
air and water become mixed in the reservoir T", and pass therefrom together
into and through the small tubes t, t, t, into the receiver G, and re-ascend
through the perforated plate p, into the tubes t¹, t, t, from which they pass
into the case B, which has two escape pipes F and f(Figure 3); the air passes
off by the pipe F, and the water by the pipe f, into a reservoir provided for

page_text: the purpose, and is returned to the supply cistern. The condensed steam is
drawn from the chamber H by the pump P through the pipe m, and is forced
through the pipe n and column L, while at the same time the pump P¹ draws
it through the pipe O into the pipe O¹, which leads it to the boiler; this pipe 0¹
is coiled or of serpentine form, and I prefer to place it in stationary and marine
engines in front or behind the furnace, and in locomotive engines in the smoke
box, by which means the water or condensed steam becomes re-heated before
entering the boiler.
The apparatus and tubes shewn in the Drawings are placed vertically, they
may, however, be horizontal or inclined.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I claim as my "Improve-
ments in Steam Engines," utilizing the steam after it has produced its effect in
the cylinders, by passing it into and through condensing apparatus, constructed,
arranged, and acting substantially as herein-before described and illustrated in
the accompanying Drawings.
In witness whereof, I, the said Jean Pierre Florimond Datichy, have
hereunto set my hand and seal, this Thirteenth day of August, One
thousand eight hundred and sixty-three.
J. P. F. DATICHY. (L.S.)