AN IMPROVEMENT APPLICABLE TO STEAM ENGINES AND STEAM GENERATORS, HAVING FOR ITS OBJECT ECONOMY OF FUEL
Year: 1837

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JAMES
LEONARD CLEMENT THOMAS, of Covent Garden, in the County of Middlesex,
Esquire, send greeting.
WHEREAS His late most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing "date"
at Westminster, the Seventeenth day of June, in the seventh year of His reign,
did, for Himself, His heirs and successors, give and grant unto me, the said.
James Leonard Clement Thomas, His especial licence, full power, sole privilege
and authority, that I, the said James Leonard Clement Thomas, my exors,
admors; and assigns, or such others as I, the said James Leonard Clement
Thomas, my exors, adiñors, or assigns, should at any time agree with, and no
others, from time to time and at all times during the term of years therein'
expressed, should and lawfully might make, use, exercise, and vend, within
England, Wales, and the Town of Berwick upon Tweed, the Invention of "AN
IMPROVEMENT APPLICABLE TO STEAM ENGINES AND STEAM GENERATORS, HAVING FOR
ITS OBJECT ECONOMY OF FUEL," communicated to me by a certain foreigner
residing abroad; in which said Letters Patent is contained a proviso that I, the
said James Leonard Clement Thomas, shall cause a particular description of
the nature of the said Invention, and in what manner the same is to be per-
formed, to be inrolled in His said Majesty's High Court of Chancery within
six calendar months next and immediately after the date of the said in part
recited Letters Patent, as in and by the same, reference being thereunto had,
will more fully and at large appear.

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
James Leonard Clement Thomas, do hereby declare the nature of the said
Invention, and the manner in which the same is to be performed, are fully
described and ascertained.in and by. the following statement thereof, reference
being had to the Drawing hereunto annexed, and to the figures and letters
marked thereon, that is to say:-
The Invention consists in a mode of applying the waste steam of steam
engines through hollow bars, in minute jets, into, and amongst the fire or
burning fuel on the fire bars of steam generators, whereby considerable economy
will be obtained in the working of steam engines and steam generators.
DESCRIPTION OF THE DRAWING.
Figure 1 is a plan of the fire bars of a steam generator; Figure 2 is an end
view; Figure 3, a longitudinal section of one of the fire bars; and Figure 4 is
a transverse section of one of the fire bars. In each of these Figures the same
letters indicate similar parts. a, a, are hollow fire bars, having a series of
small holes b, b, through which the steam or vapours pass to the burning-fuel
laid on the fire bars. Each of the fire bars a is connected to the pipe, c by
means of short connecting tubes d, as is clearly shewn in the Drawing, the
pipe c being connected with the waste steam pipe of the steam engine by the
pipe e hence it will be evident that as the steam from the engine will flow.
through the pipe e into the pipe c, and pass off through the small holes in
small jets, and in so doing will become decomposed and add materially to the
heat evolved by the fuel, owing to the vapours of. the decomposed water
becoming ignited.
I would remark that in order to prevent too much steam passing into the
hollow bars, and in order to regulate the quantity supplied to the fuel, and keep
it only to that quantity which will be fully decomposed, there is to be a throttle
or. other valve by which the engine man can regulate the supply to the bars,
depending on the state of the fire, and keep such supply to the quantity which
the fuel on the heated bars will decompose, for should the supply be too great
it will be prejudicial to the burning of the fuel, which, however, will readily be
observed by the attendant of the engine.
Having thus described the nature of the Invention, I would remark that I
have not thought it necessary to shew a steam engine and its generator, as
their construction forms no part of the Invention, and it will be evident that
the Invention is applicable to steam engines and generators generally, means
being provided for conveying part of the waste steam, as above described, in
order to its being decomposed, as above described.