AN IMPROVEMENT IN PORTABLE AND LOCOMOTIVE STEAM ENGINES
Year: 1853

page_text: LETTERS PATENT to Nathaniel Clayton and Joseph Shuttleworth,
of the Stamp End Iron Works, in the Town and County of
Lincoln, Agricultural Engineers, for the Invention of "AN
"
PROVISIONAL SPECIFICATION left by the said Nathaniel Clayton
and Joseph Shuttleworth at the Office of the Commissioners of
Patents, with their Petition, on the 13th April 1853.
We, NATHANIEL CLAYTON and JOSEPH SHUTTLEWORTHI, of the Stamp
End Iron Works, in the Town and County of Lincoln, Agricultural
Engineers, do hereby declare the nature of the said Invention for
"AN IMPROVEMENT IN PORTABLE AND LOCOMOTIVE STEAM ENGINES" to be
as follows, viz. :-
This improvement consists in placing the working cylinder or
cylinders of portable and locomotive steam engines in a steam chamber
or jacket within the smoke box, whereby condensation of steam within
the cylinder, and radiation of heat therefrom, is effectually prevented.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Nathaniel Clayton and Joseph Shuttleworth, in
the Great Seal Patent Office, on the 12th October 1853.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we,
NATHANIEL CLAYTON and JOSEPH SHUTTLEWORTH, of the Stamp End
Iron Works, in the Town and County of Lincoln, Agricultural En-
gineers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Thirteenth day of April, in the year
of our Lord One thousand eight hundred and fifty-three, in the six-
teenth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto us, the said Nathaniel Clayton and Joseph Shuttle-
worth, Her special licence that we, the said Nathaniel Clayton and
Joseph Shuttleworth, our executors, administrators; and assigns, or
such others as we, the said Nathaniel Clayton and Joseph Shuttle-
worth, 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 terin 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
"AN IMPROVEMENT IN PORTABLE AND LOCOMOTIVE STEAM ENGINES," upon
the condition (among others) that we, the said Nathaniel Clayton and
Joseph Shuttleworth, by an instrument in writing under our hands
and seals, 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 this improvement -consists in placing the
working cylinder or cylinders of portable and locomotive steam engines
in a steam chamber or jacket within the smoke box, whereby conden-
sation of steam within the cylinder, and radiation of beat therefrom, is
effectually prevented.
The form of the, steam chamber or jacket, its position within the

page_text: smoke box, and the communication between the steam chamber and
the boiler, may be so disposed and varied as to suit the particular
construction of the engine, and the purpose for which it is to be used,
the best arrangements of which will occur to any intelligent workman.
We are aware that the working cylinders of steam engines have been
heretofore surrounded by a steam chamber or jacket, and also that
the working cylinders of locomotive and portable steam engines have
been sometimes placed within the smoke box; but we have found
considerable advantage to arise from surrounding the working cylinder
with a steam chamber, such steam chamber being placed within the
smoke box of the engine, a combination that has not, to the best of our
knowledge and belief, been used by any other person.
We do not confine ourselves to any precise form of steam chamber,
nor to any particular position of the steam chamber within the smoke
box, as these details may be varied and modified, in various ways,
without prejudice to our Invention; what we claim as new and of our
Invention, is the combination of surrounding the working cylinder
or cylinders of portable and locomotive steam engines with a steam
chamber or jacket placed within the smoke box of the engine.
In witness whereof, we, the said Nathaniel Clayton and Joseph
Shuttleworth, have hereunto set our hands and seals, this Sixth
day of October, in the year of our Lord One thousand eight
hundred and fifty-three.
NATHANIEL CLAYTON.
(L.S.)
JOSEPH SHUTTLEWORTH. (L.S.)
Witness, WILLIAM BADDELEY,
13, Angell Terrace, Islington.