AN IMPROVED ARRANGE- Szum An exon OMBAY RAYEEDS FAD CONSUMING SMOKE
Year: 1860

page_text: LETTERS PATENT to George Bagshaw, of Preston, in the County of
Lancaster, Engine Tenter, for the Invention of "AN IMPROVED ARRANGE-
Szum An exon OMBAY RAYEEDS FAD CONSUMING SMOKE"
PROVISIONAL SPECIFICATION left by the said George Bagshaw at the
Office of the Commissioners of Patents, with his Petition, on the
15th November 1860.
I, GEORGE BAGSHAW, of Preston, in the County of Lancaster, Engine Tenter,
do hereby declare the nature of the said Invention for "AN IMPROVED ARRANGE-
MENT OF THE FLUES OF STEAM BOILERS FOR CONSUMING SMOKE," to be as follows:-
The bridge at the back of the furnace is made much longer than usual, and
is so formed that the smoke after passing over part of it shall descend and
return to a chamber underneath it, with which chamber there are one or more
air tubes communicating with the atmosphere. At the front of the bridge are
one or more apertures communicating with the chamber, which apertures allow
the heat from the furnace to pass to the chamber and ignite and burn the
smoke, the gases passing off by one or more flues to the chimney.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Bagshaw in the Great Seal Patent Office on the
14th May 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
BAGSHAW, of Preston, in the County of Lancaster, Engine Tenter, send
greeting.

page_text: WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Fifteenth day of November, in the year of our Lord
One thousand eight hundred and sixty, in the twenty-fourth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said George Bagshaw, Her special licence that I, the said George Bagshaw,
my executors, administrators, and assigns, or such others as I, the said
George Bagshaw, 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, exer-
cise, and vend, within the United Kingdom of Great Britain and Ireland,
the Channel Islands, and Isle of Man, an Invention for "AN IMPROVED ARRANGE-
MENT OF THE FLUES OF STEAM BOILERS FOR CONSUMING SMOKE," upon the
condition (amongst others) that I, the said George Bagshaw, 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 George Bagshaw, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement (that is to say):-
The bridge at the back of the furnace is made much longer than usual,
and is so formed that the smoke after passing over part of it shall descend
and return to a chamber underneath it, with which chamber there are one
or more air tubes communicating with the atmosphere. At the front of the
bridge are one or more apertures communicating with the chamber, which
apertures allow the heat from the furnace to pass to the chamber and ignite.
and burn the smoke, the gases passing off by one or more flues to the
chimney.
These improvements will be clearly understood by referring to the Figures
and letters on the accompanying Sheet of Drawings, in which Figure 1 is a
longitudinal section of my improved arrangement of the flues of steam boilers;
and Figures 2, 3, and 4 are transverse sections of the same at the lines A B,
C D, E F.
The boiler is shewn at a, and the furnace at b, at the back of which is the
bridge c made much longer than usual, and having at the end an opening d
through which the smoke descends and returns to a chamber e underneath the

page_text: bridge c, with which chamber there are one or more air tubes communicating
with the atmosphere. At the front part of the bridge there are one or more
apertures communicating with the chamber e for allowing the heat from the
furnace to pass to the chamber and ignite and burn the smoke, the gases
passing off by the flues g to the chimney, which flues are arranged, as required,
according to the size and description of boiler. The bridge c, the chamber e,
and flues g, are made either of metal or tiles, and although in the Drawings
they are shewn as applied to a boiler with a single furnace and one line of
flues they are intended to be applied to flued boilers in general. The ordinary
bridges are about one foot long, but my improved bridge and flue is generally
about five feet long, but it may be longer or shorter according to the size and
requirements of the boiler, or the bridge and flue may extend the entire length
of the boiler. The smoke from the furnace passes over the top of the long
bridge and then returns so as to come in contact with the flame, which
passes through the apertures f from the hottest part of the fire, and then the
smoke is ignited.
The aforesaid arrangements have been found by experience effectually to
consume the smoke, generate more steam, and greatly to economize the fuel.
Having now described the nature and particulars of my said Invention, and
the manner in which the same is to be performed, I desire it to be understood
that I claim as my Invention in the flues of steam boilers, the employment of
a long bridge at the back of the furnace in connection with one or more
apertures at the front of the bridge communicating with the combustion
chamber, as such improvements are herein described and illustrated in the
accompanying Sheet of Drawings.
In witness whereof, I, the said George Bagshaw, have hereunto set my
band and seal, this Thirteenth day of May, in the year of our Lord One
thousand eight hundred and sixty-one.
Signed, sealed, and delivered by the
within-named George Bagshaw,
in the presence of
E. J. HUGHES,
Patent Agent,
Manchester.
GEORGE BAGSHAW. (L.S.)