IMPROVEMENTS IN STEAM ENGINES
Year: 1860

page_text: LETTERS PATENT to William Henry Nash, of 3, Matson's Terrace,
Kingsland Road, in the County of Middlesex; Engineer, for the Inven-
tion of "IMPROVEMENTS IN STEAM ENGINES."
PROVISIONAL SPECIFICATION left by the said William Henry Nash
at the Office of the Commissioners of Patents, with his Petition, on.
the 1st March 1860.
I, WILLIAM HENRY NASH, of 3, Matson's Terrace, Kingsland Road, in the
County of Middlesex, Engineer, do hereby declare the nature of the Inven-
tion for "IMPROVEMENTS IN STEAM ENGINES," to be as follows:-
This Invention has for its object improvements in steam engines, and con-
sists in applying apparatus to steam engines in order to return the wasto or.
exhaust steam into the boilers of such engines without such steam being first
condensed. For these purposes the exhaust steam of a steam engine is con-
ducted by a suitable pipe into a small chamber, from which there is an opening
into the atmosphere, the end of the pipe entering into the chamber. At the side
of the chamber opposite the end of the above-mentioned pipe there is another
pipe leading to the boiler, the nozzle or opening into which is of less diameter
than the nozzle or end of the pipe coming from the engine. In the pipe
leading to the boiler there is a valve, which is arranged to open inwards towards
the-boiler. The nozzles or ends of the two pipes come near to each other,

page_text: leaving, however, an open space between them. By this arrangement the rush
of the exhaust steam will overcome the valve, and part of the steam will enter
the boiler and part escape into the atmosphere.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Henry Nash in the Great Seal Patent Office on the
1st September 1860..
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
HENRY NASH, of 3, Matson's Terrace, Kingsland Road, 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 March, in the year of our Lord
One thousand eight hundred and sixty, in the twenty-third year of Her reign,
did, for Herself, Her heirs, and successors, give and grant unto me, the said
William Henry Nash, Her special licence that I, the said William Henry
Nash, my executors, administrators, and assigns, or such others as I, the
said William Henry Nash, 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 William Henry Nash, my executors or administrators, by an
instrument in writing under my, or their, or one of 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 I, the said William Henry Nash, do hereby declaro
the nature of the 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, that is to say:-
This Invention has for its object improvements in steam engines, and consists
in applying apparatus to steam engines in order to return the waste or exhaust
steam into the boilers of such engines without such steam being first condensed.
For these purposes the exhaust steam of a steam engine is conducted by a
suitable pipe into a small chamber, from which there is an opening into the

page_text: steam engine may be collected, and returned, without condensation, into the
boiler from whence it came, and used again to supply the engine, or it may be
collected into any other receptacle, and applied to any other purpose for which
steam pressure is required, without interfering with the working of the engine,
and at the same time any steam which will not so return may be condensed or
otherwise employed as heretofore.
Having now described the nature of my Invention and the manner of per-
forming the same, I would state that I do not confine myself to the precise
details above described; but what I claim is the combination above described.
In witness whereof, I, the said William Henry Nash, have hereunto set
my hand and seal, this Thirty-first day of August, in the year of our
Lord One thousand eight hundred and sixty.
W. HENRY NASH. (L.S.)