IMPROVEMENTS IN AND IN CONNECTION WITH MARINE AND OTHER STEAM
Year: 1858

page_text: LETTERS PATENT to James Samuel, of Great George Street, in the City
of Westminster, Civil Engineer, and John. Nicholson,. of. Wellington
Street, Bromley, in the County of Middlesex, Engineer, for the Invention
of "IMPROVEMENTS IN AND IN CONNECTION WITH MARINE AND OTHER STEAM
Sealed the 31st May 1859, and dated the 1st December 1858.
PROVISIONAL SPECIFICATION left by the said James. Samuel and
John Nicholson at the Office of the Commissioners of Patents, with
their Petition, on the 1st December 1858.
We, JAMES SAMUEL, of Great George Street, in the City of Westminster,
Civil Engineer, and JOHN NICHOLSON, of Wellington Street, Bromley, in the
County of Middlesex, Engineer, do hereby declare the nature of the said
Invention for." IMPROVEMENTS IN AND IN CONNECTION WITH MARINE AND OTHER
STEAM ENGINES," to be as follows:-
Our improvements in and in connection with marine and other steam
engines, relate to such engines as are employed to drive or to work in the
neighbourhood of paddle wheels, water wheels, or other apparatus by which
the agitation and dispersion of cold water are produced in their ordinary
working. We will describe the improvements more particularly with reference
to their application to paddle wheel steam vessels.
Our Invention consists, primarily, in the employment of surface condensers

page_text: of any approved form within the paddle boxes or otherwise by the side of or
behind the paddle wheel, in order that the water which the wheel while in
motion is continually throwing up, may be received upon or come in contact
with the exterior of the condensers, and effect the condensation of the steam
within them, falling of course to the sea by its own gravity.
Our Invention further consists in employing a supplementary or donkey
engine for pumping the feed water into the boiler or boilers, and a supple-
mentary boiler or boiler.compartment for generating from the salt water of
the sea sufficient steam to supply, when condensed, the waste of water which
occurs by leakage in the main engine, and by other causes of loss. The feed
pumps of both the salt and the fresh water boilers may be worked by the
donkey engine, which is itself ordinarily driven by steam from the salt water
boiler by preference. Air pumps may thus be dispensed with, as the con-
densed steam from the surface condensers falls by its own gravity to the feed
pumps. It is evident that.where a screw propeller and paddle wheels are used
in the same vessel, the condensation of the whole of the steam used for giving
motion to all of them may be effected by means of our improved arrangement
of condensers in connection with the paddle wheels.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said James Samuel and John Nicholson in the Great Seal
Patent Office on the 1st June 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JAMES
SAMUEL, of Great George Street, in the City of Westminster, Civil Engineer,
and JOHN NICHOLSON, of Wellington Street, Bromley, in the County of
Middlesex, Engineer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the First day of December; in the year of our Lord
One thousand eight hundred and fifty-eight, in the twenty-second year
of Her reign, did, for Herself, Her heirs and successors, give and grant
unto us, the said James Samuel and John Nicholson, Her special licence
that we, the said James .Samuel and John Nicholson, our executors,
administrators, and assigns, or such others as we, the said James Samuel
and John Nicholson, 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

page_text: and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN AND IN CONNECTION WITH MARINE AND OTHER STEAM
ENGINES," upon the condition (amongst others) that we, the said James
Samuel and John Nicholson, or one of us, our executors or administrators,
by an instrument in writing under our, or their, or one of our or 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 we, the said James Samuel and John Nicholson,
do hereby declare the nature of our 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:
Our improvements in and in connection with marine and other steam-
engines relate to such engines as are employed to drive or to work in the
neighbourhood of paddle wheels, water wheels, or other apparatus by which the
agitation and dispersion of cold water are produced in their ordinary working.
We will describe and illustrate the improvements more particularly with
reference to their application to paddle-wheel steam vessels.
Our Invention consists, primarily, in the employment of surface condensers
of any approved form within the paddle boxes or otherwise by the side of or
behind the paddle wheel, in order that the water which the wheel while in
motion is continually throwing up may be received upon or come in contact
with the exterior of the condensers, and effect the condensation of the steam
within them.
Our Invention further consists in employing a supplementary or donkey
engine for pumping the feed water into the boiler or boilers, and a supple-
mentary boiler or boiler compartment for generating from the salt water of the
sea sufficient steam to supply when condensed the waste of water which occurs
by leakage in the main engine, and by other causes of loss. The feed pumps.
of both the salt and the fresh water boilers may be worked by the donkey
engine, which is itself ordinarily driven by steam from the salt water boiler
by preference. Air pumps may thus be dispensed with, as the condensed
steam from the surface condensers falls by its own gravity to the feed pumps.
It is evident that where a screw propeller and paddle wheels are used in the
same vessel, the condensation of the whole of the steam used for giving motion
to all of them may be effected by means of our improved arrangement of con-
lensers in connection with paddle wheels.

page_text: Figure 1 is a transverse section of so much of a paddle wheel steamer as is
necessary for the explanation of the manner in which we prefer to carry our
Invention into effect. Figure 2 is a longitudinal section showing our con-
denser and arrangement of boilers and donkey engine. A, A, are ordinary
boilers; B is a supplementary salt water boiler; C is the condenser formed of
side plates a, a, and top and bottom plates b, b; c, c, are a series of tubes open
at both ends, and fitted steam tight between the plates a, a; D is a donkey
engine; E, the exhaust pipe leading from the cylinder into the condenser; F
is the steam pipe leading from the salt water boiler B into the donkey engine,
and G exhaust pipe, conveying the steam from the donkey engine into the
condenser. H is a pipe for supplying the fresh water from the bottoni of the
condenser to the feed pump I, from whence it is pumped through the pipe K
into the fresh water boiler; L is the pump for supplying salt water introduced
through the salt water supply pipe M to the boiler B through the pipe N; O,
is a cold water pipe for the condenser, to be used at starting until the paddle
wheel has commenced to throw the cool water up to the condenser.
And having now described the nature of our said Invention, and in what
manner the same is to be performed, we declare that we lay no claim to any
parts of the Invention separately; but we claim,
First, the employment of surface condensers within the paddle box or
otherwise by the side of or behind the paddle wheel of steam vessels, in the
manner and for the purposes herein-before described.
Secondly, the combination of surface condenser, auxiliary boiler, donkey
engine, and pumps arranged and acting substantially in the manner herein-
before described.
In witness whereof, I, the said James Samuel, have hereunto set my
hand and seal, this Thirty-first day of May, One thousand eight
hundred and fifty-nine.
JAMES SAMUEL. (L.S.)