A MEANS OF CONSUMING SMOKE IN FURNACES
Year: 1854

page_text: LETTERS PATENT to William Stephens Garland and Josiah Glasson, both
of Soho Foundry, in the County of Stafford, Engineers and Boiler
Makers, for the Invention of "A MEANS OF CONSUMING SMOKE IN
FURNACES."
Sealed the 16th January 1855, and dated the 25th July 1854.
PROVISIONAL SPECIFICATION left by the said William Stephens Garland
and Josiah Glasson at the Office of the Commissioners of Patents, with
their Petition, on the 25th July 1854.
We, WILLIAM STEPHENS GARLAND and JOSIAH GLASSON, both of Soho
Foundry, in the County of Stafford, Engineers and Boiler Makers, do hereby
declare the nature of the said Invention for "A MEANS OF CONSUMING SMOKE
IN FURNACES" to be as follows:-
Our Invention consists in constructing furnaces with hollow fire bars or tubes
open at both ends for the admission of air into the furnace, through or at or
near the back of the fire bridge, so as to effect the consumption of smoke.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said William Stephens Garland and Josiah Glasson in the Great
Seal Patent Office on the 25th January 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, WILLIAM
STEPHENS GARLAND and JOSIAH GLASSON, both of Soho Foundry, in the
County of Stafford, Engineers and Boiler Makers, send greeting.
WHEREAS Her
Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fifth-day of July, in the year of our Lord One
thousand eight hundred- and fifty-four, in the eighteenth year..of Her reign,
did, for Herself, Her heirs and successors, give and grant unto us, the said
William Stephens Garland and Josiah Glasson, Her special licence that we, the
said William Stephens Garland and Josiah Glasson, our executors, administra-
tors, and assigns, or such others as we, the said William Stephens Garland and
Josiah Glasson, 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 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 "A MEANS OF CONSUMING SMOKE
IN FURNACES," upon the condition (amongst others) that we, the said 'William
Stephens Garland and Josiah Glasson, or one of us, by an instrument in
writing under our hands and-seals, or under the hand and seal of one of. us,
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 we, the said William Stephens Garland and Josiah
Glasson, do hereby. declare the nature of our said Invention, and in what
manner the same is to be performed, 'to be particularly described and ascer-
tained in and by the following statement thereof, reference being had to the
Drawings hereunto annexed (that is to say):
Our Invention is applicable to the furnaces of steam boilers, to air and
annealing furnaces, and to the furnaces of brewery coppers, bakers' and other
ovens, and consists in the employment of hollow fire or grate bars formed of
cast iron, wrought iron, or other suitable materials for the admission of air,
having a bend at the back end thereof to form the bridge, for the purpose of
more effectually burning or consuming smoke and saving fuel.
Figure 1 of the Drawings hereunto annexed is a sectional elevation of a
boiler for land purposes, generally known as the Cornish boiler; and Figure 2

page_text: is a transverse section of the same, shewing our Invention applied thereto.
A is the boiler; and B, the grate, which is formed of hollow bars, of the form
shewn; the air passes through them from a to b, and the bends c, c, c, form
the bridge. Figure 3 is a longitudinal section of a marine tubular boiler, to
which our Invention is applied; and Figure 4 is a transverse section of the
same. The improved hollow bars are represented in these Figures by the
letters a, a, a, a, and the bends forming the bridges by c, c, c, c. Figures 5
and 6 shew the application of the hollow bars to a muffle, air, or annealing
furnace, and, in addition to the hollow bars, an air passage d, d, is formed upon
the counter arch e, e, to convey the heated air to the end of the furnace.
In this construction of furnaces, both for steam boilers, brewery coppers, air
or annealing furnaces, and muffles, or ovens, as described above, more perfect
combustion is obtained, smoke is burned or consumed, and a considerable saving
of fuel is effected. In boilers which have a strong draft, a slide f, shewn in
Figure 1, is fixed in front of the fire bars, to regulate the admission of air
through them. Hollow bars, such as are shewn in the Drawing, are also
more durable than the common or solid bars, as the current of air passing
through them renders them less liable to burn or twist.
And having now described the nature of our said Invention, and in what
manner the same is to be performed, we declare that what we claim is,
the employment in furnaces of hollow fire or grate bars having a bend at
the back end thereof to form the bridge, whereby air is admitted to such
furnaces, and the consumption or prevention of smoke is effected.
In witness whereof, we, the said William Stephens Garland and Josiah
Glasson, have hereunto set our hands and seals, this Nineteenth day
of January, One thousand eight hundred and fifty-five.
WILLIAM STEPHENS GARLAND. (L.s.)
JOSIAH GLASSON.
(L.S.)