THE REGENERATION AND EXPANSION OF STEAM APPLICABLE TO STEAM ENGINES OR FOR OTHER PURPOSES
Year: 1860

page_text: LETTERS PATENT to William Bridgett. of New Lenton, in the County
of Nottingham. Engineer. for the Invention of "THE REGENERATION
AND EXPANSION OF STEAM APPLICABLE TO STEAM ENGINES OR FOR OTHER
PURPOSES."
Sealed the 11th October 1860, and dated the 17th April 1860.
PROVISIONAL SPECIFICATION left by the said William Bridgett at the
Ollice of the Commissioners of Patents, with his Petition, on the
17th April 1860.
1. WILLIAM BRIDGETT. of New Lenton, in the County of Nottingham.
Engineer, do hereby declare the nature of the said Invention for "THE REGE-
NERATION AND EXPANSION OF STEAM APPLICABLE TO STEAM ENGINES OR FOR OTHER
PURPOSES," to be as follows:-
"
My Invention consists in the regeneration and expansion of steam, and is as
follows: conduct the steam after it is generated in the boiler through one
or more tubes into one or more chambers placed in the take up" at the end
of the boiler, for the purpose of being heated by the heat passing through or
under the boiler, according to its construction. This heat regenerates the
steam and expands it. By these means considerable saving of fuel is effected.
also conduct the chamber or chambers along the flues around the boiler, and
then through the "take up; "I then connect them to other chambers which
are formed in curves, and thus obtain greater heated surface.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent. filed
by the said William Bridgett in the Great Seal Patent Office on the
17th October 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, 1. WILLIAM
BRIDGETT, of New Lenton, in the County of Nottingham. Engineer. send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, byler Letters
Patent, bearing date the Seventeenth day of April. in the year of our Lord
One thousand eight hundred and sixty. in the twenty-third year of Her
reign. did. for Herself, Iler heirs and successors. give and grant unto
me, the said William Bridgett. Her special licence that I. the said William
Bridgett, my executors, administrators, and assigns, or such others as I,
the said William Bridgett, 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, usc. exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for "THE
REGENERATION AND EXPANSION OF STEAM APPLICABLE TO STEAM ENGINES, OR FOR
LTHER PURPOSES," upon the condition (amongst others) that I, the said William
Bridgett, my executors or administrators, by an instrument in writing under my
or their, or one of their hands and seals, should particularly describe and ascer-
tain 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 Scal Patent Office
within six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that 1, the said William Bridgett. do hereby declare
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. reference being had to the accompanying Draw-
ings, and to the letters and figures marked thereon, that is to say :-
"
My Invention has for its object the regeneration and expansion of steam,
and is as follows:-- conduct the steam after it is generated in the boiler
through one or more tubes into one or more chambers placed in what is called
the "take up at the end of the boiler, in order that it may be heated therein
by the heat which passes through or under the boiler, according to its con-
struction; this heat regenerates the steam and expands it. By the employment
of these means considerable saving of fuel is effected. I also, when I so desire,
carry the chamber or chambers along the flues around the boiler and through

page_text: the take up." and then connect them to other chambers which are formed in
curves, and I thereby obtain greater heated surface.
I now proceed more particularly to explain my said Invention, and the
mode in which the same may be performed with reference to the accompanying
Drawings.
Sheet 1. Figure 1. is a side view of one of my arrangements for carrying
my Invention into effect; this arrangement being contrived for effecting the
expansion of steam from a steam boiler, say, for a twenty horse-power engine,
A. A. are portions of the top of the boiler, and B. B. are portions of the bottom
of the same; the intermediate portions and portions of some of the pipes are
broken away. C is the flue under the boiler; C' is the take up at the end of the
boiler; on the top of the boiler at the centre of its length is fixed the usual pipe
DJ, which leads to the engine; the upper part is somewhat larger than the rest
of the pipe, and is fitted with a valve of any convenient construction, by which
the steam can be turned on to the engine direct from the boiler, or, when it is
required. to expand the steam, it is shut off in the pipe D. and a valve is
opened at the upper part of the pipe E, leading from the boiler near the end
next the take up, the steam passing along the pipe F, down to a chamber G,
out of which it passes down any convenient number of pipes H, which are
turned into the flue, the pipes reaching to the centre of the length of the boiler,
at which point they return along the bottom of the flue up to a chamber J;
one end of the chamber I is turned up. and is provided with a safety valve K.
From the centre of the chamber a pipe leads to a valve L, from whence the
steam may pass to the engine along the pipe M.
Figure 2, Sheet 1. represents the same arrangement as seen from the front,
the pipes F and M being cut through, and the boiler taken away; the dotted
.lines represent the top portion A and bottom portion B of the boiler.
In my second arrangement for performing the Invention, instead of carrying
the pipes in the flue back under the boiler. I use pipes in the form shown
at II. in Figure 3. Sheet 2. which is a side view, and I connect any convenient
number of these pipes H to chambers G and I, similar to those herein-before
described. leading to the boiler and to the engine in the same way, the pipes H
resting on the bottom of the take up at the back of the boiler. In boilers
which have pipe flues in their length. instead of the flues being merely com-
posed of brick. I place the pipes II in such flues for a portion of their length,
the pipes passing up the take up to chambers, as before described.
In the third arrangement for carrying out my Invention, use pipes H of
the waved or corrugated form, as shown at Figure 4, Sheet 2. (which is a side
view of a portion of such pipe,) which 1 place in the flues in the boiler or under

page_text: it, and connect them to chambers, as herein-before mentioned. By using pipes
of the form shown. I obtain a much greater heating surface in the same length
of flue and take up than heretofore obtained.
In a fourth arrangement for performing my Invention (and to
(and to which
Figure 5. Sheet 2, refers), I connect the pipe F to a chamber N, which is
perforated with a number of holes. in which are tubes through which the
heated air from the flues passes. whereby the steam is greatly expanded before
passing along the pipe M and through the valve to the engine, or the steam
may pass directly to the engine from the chamber N, which may be made with
air tubes lying horizontally, as shown at Figure 5, Sheet 2, for the heated air
to pass through directly from the flue or flues, or the tubes may be placed ver-
tically for the heated air in the take up to pass through as most convenient,
as shewn at Figure 6.
And having now described the nature of my said Invention, and in what
manner the same may be performed, I declare that the object of my Invention
is to effect the regeneration and expansion of steam; and that what I claim
is, arranging and combining apparatus for those purposes in the manner herein-
before described.
In witness whereof, I, the said William Bridgett, have hereunto set my
hand and seal, this Fifteenth day of October. in the year of our
Lord One thousand eight hundred and sixty.
Witness,
GEO. Jos. ROBINSON. Patent Agent,
Xottingham.
WILLIAM BRIDGETT. (L.S.)