CERTAIN IMPROVEMENTS IN HEATING WATER FOR FEEDING BOILERS OF LOCOMOTIVES AND MARINE STEAM ENGINES."
Year: 1854

page_text: LETTERS PATENT to François Desiré Molvé and Pierre Martin, of Paris,
in the Empire of France; and of 4, South Street, Finsbury, London,
Engineers, for the Invention of "CERTAIN IMPROVEMENTS IN HEATING WATER
FOR FEEDING BOILERS OF LOCOMOTIVES AND MARINE STEAM ENGINES."
PROVISIONAL SPECIFICATION left by the said François Desiré Molvé
and Pierre Martin at the Office of the Commissioners of Patents, with
their Petition, on the 27th July 1854.
We, FRANÇOIS DESIRE MOLVÉ and PIERRE MARTIN, of Paris, in the Empire
of France, and of 4, South Street, Finsbury, London, Engineers, do hereby
declare the nature of our Invention of "CERTAIN IMPROVEMENTS IN HEATING
WATER FOR FEEDING BOILERS OF LOCOMOTIVES AND MARINE STEAM ENGINES" to be
as follows:
Our Invention consists in certain mechanical arrangements for causing the
water injected by the feed pumps of locomotive and marine engine boilers to
circulate in pipes situated in the interior of the chimney or smoke box before
its introduction into the boiler.
In the accompanying Drawing, Figure 1 is a vertical section through the
middle of the chimney, which is represented as placed upon the smoke box.
F, interior of the ordinary chimney flue; G, chimney cap; A, B, interior of the
smoke box. a, a, conduct pipes, coming from the feed pumps, passing thro'
the smoke box, and communicating with the ascension pipes c, c.
The chimney is composed of two wide concentric pipes a few inches apart,

page_text: forming between them a circular space, seen in vertical section at d, d, and in
horizontal section at i, i, Figure 2.
The pipes C, C, bring the water into the circular space from the pumps, and
the pipes D, D, which communicate at their upper part with the pipes C, C,
conduct the heated water to the boiler E, in which it enters at e, e. The
direction taken by the feed water is shewn by the arrows.
In lieu of making the water arrive at the bottom of the circular canal thro'
pipe C, it could be made to arrive thro' the upper part of this canal; thus
allowing the suppression of the internal pipe D, and causing the water to egress
at the lower extremity of the annular canal, so as to arrive in the middle of the
boiler, as usual.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said François Desiré Molvé and Pierre Martin in the Great Seal
Patent Office on the 23rd January 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, FRANÇOIS
DESIRE MOLVÉ and Pierre Martin, of Paris, in the Empire of France, and of
4, South Street, Finsbury, London, Engineers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-seventh day of July, in the year of our Lord
One thousand eight hundred and fifty-four, in the eighteenth year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto us, the said
François Desiré Molvé and Pierre Martin, Her special license that we, the
said François Desiré Molvé and Pierre Martin, our executors, administrators,
and assigns, or such others as we, the said François Desiré Molvé and Pierre
Martin, our 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 of "CERTAIN IMPROVEMENTS IN HEATING
WATER FOR FEEDING BOILERS OF LOCOMOTIVES AND MARINE STEAM ENGINES," upon
the condition (amongst others) that we, the said François Desiré Molvé and
Pierre Martin, by an instrument in writing under our hands and seals, or
under the hand and seal of one of us, 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.

page_text: NOW KNOW YE, that we, the said François Desiré Molvé and Pierre
Martin, do hereby declare the nature of our said Invention, and in what
manner the same was to be performed, to be particularly described and ascer-
tained in and by the following statement thereof, reference being had to the
Drawing hereto annexed, and to the figures and letters marked thereon, that
is to say:
Our Invention consists in mechanical arrangements applied to or in con-
nection with the chimneys of locomotives and steam engines, whereby the whole
or great part of the heat generally lost through the chimneys is abstracted
and employed for heating water, which afterwards is supplied to the steam
boiler.
The annexed Drawing, Figure 1, shews the chimney of a locomotive
provided with a double sheet-iron envelope C, shut at top and bottom, and
communicating at its lower part, which is set in the smoke box, with the pipes
A, B, into which pipes the alimenting water is forced by pumps. The upper
part also communicates with two pipes D, D', which enter the boiler at the
side, or in any other suitable part. Valves are adapted to the pipes D, D', to
prevent water or steam being admitted therein. The water introduced into the
double envelope is heated by abstracting the caloric from the smoke of heated
gases passing from the furnace through the chimney into the open air. E,
bottom of the boiler; F, interior of the chimney; G, cap of sheet iron.
Figure 2 is a horizontal section through V, X.
Having now described the nature of our said Invention, and the manner of
carrying it into effect, we wish it to be understood that we do not confine our-
selves to the precise details herein laid down; but what we claim as new, and
intended to be protected by the herein-before in part recited Letters Patent, is,
the mechanical arrangements applied to or in connection with the chimneys of
locomotives and steam engines for abstracting and applying the heat generally
lost in such chimneys for the supply of heated water to steam boilers.
In witness whereof, we, the said François Desiré Molvé and Pierre
Martin, have hereunto set our hands and seals, this Twentieth day of
January, in the year of our Lord One thousand eight hundred and
fifty-five
MOLVE. (L.S.)
MARTIN.
(L.S.)