CERTAIN IMPROVEMENTS IN THE MEANS OP OR APPA-- RATUS FOR REDUCING THE QUANTITY OF 'SMOKE FROM THE FURNACES OF. BOILERS, COPPERS, PANS, AND OTHER LIKE VESSELS
Year: 1853

page_text: LETTERS PATENT to Benjamin Price, of Fieldgate Street, White-
.chapel, in the County of Middlesex, Furnace Builder, for the
Invention of CERTAIN IMPROVEMENTS IN THE MEANS OP OR APPA--
RATUS FOR REDUCING THE QUANTITY OF 'SMOKE FROM THE FURNACES OF.
BOILERS, COPPERS, PANS, AND OTHER LIKE VESSELS."
Sealed the 5th December 1853, and dated the 15th October 1853.
I
PROVISIONAL SPECIFICATION. left by the said Benjamin Price,
at the Office of the Commissioners of Patents, with his Petition,
on the 15th October 1853.
I, BENJAMIN PRICE, of Fieldgate Street, Whitechapel, in the County:
of Middlesex, Furnace Builder, do hereby declare the nature of the
said Invention for "CERTAIN IMPROVEMENTS IN THE MEANS OF OR APPA-
RATUS FOR REDUCING THE QUANTITY OF SMOKE FROM THE 'FURNACES OF
BOILERS, COPPERS, PANS, AND OTHER LIKE VESSELS," to be as follows, that
is to say-
My Invention has for its object the application of air tubes in con-
nection with the air chamber or chainbers which form the subject. of ai

page_text: Patent granted to me on the 25th day of February 1853. The air
tubes which I now propose to employ are subjected to the heat of the
fire for the purpose of heating the air, which is afterwards adinitted to
one or more of the chambers described in the Specification of my former
Patent, the object being to get a greater supply of heated air to the
chambers aforesaid.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Benjamin Price in the Great Seal Patent Office
on the 15th April 1854.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I,
BENJAMIN PRICE, of Fieldgate Street, Whitechapel, in the County of
Middlesex, Furnace Builder; send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifteenth day of October, in the year
of our Lord One thousand eight hundred and fifty-three, in the seven-
teenth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Benjamin Price, Her special licence
that I, the said Benjamin Price, my executors, administrators, and
assigns, or sucli others as I, the said Benjamin Price, my exécutors,
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 "CERTAIN IMPROVE-
MENTS IN THE MEANS OF OR APPARATUS FOR REDUCING THE QUANTITY OF
SMOKE FROM THE FURNACES OF BOILERS, COPPERS, PANS, AND OTHER LIKE
VESSELS," upon the condition (amongst others) that I, the said Benjamin
Price, by an instrument in writing under my hand and seal, 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.

page_text: NOW KNOW YE, that I; the said Benjamin Price, 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 (that is to say):
My Invention of certain improvements in the means of or apparatus
for reducing the quantity of smoke from the furnaces of boilers, coppers,
pans, and other like vessels, has for its object the application of air tubes
in connection with the air chamber or climbers which formed the
subject of a Patent granted to me on the "Twenty-fifth day of February,
One thousand eight hundred and fifty-three. The air tubes which I
now propose to employ are subjected to the heat of the fire.for the
purpose of heating the air, which is afterwards admitted to one or more
of the chambers described in the Specification of my former Patent,
the object being to get a greater supply of heated air to the chambers:
aforesaid.
In carrying out the object of this my Invention, I in the first place
make the bridge of the furnace hollow, somewhat in the form of a tube,
and connect the same with hot air tubes formed in the side walls of the
furnace, and separated therefrom by a single course of fire brick. The
air is supplied to the hollow bridge from the ash-pit, in which there is
an aperture communicating with the hollow bridge. The aperture in the
ash-pit is provided with a door, valve or valves, for regulating the supply
of air according to circumstances. The air, being first admitted through
the aperture in the ash-pit, enters the hollow bridge, and passes along
the side tubes towards the front of the fire, at which place, that is,
opposite the dead plate, there is an opening from each side tube for the
exit of heated air from the bridge and side tubes, which heated air
passes over the fire to the hot air chambers described in the Specifica-
tion of my former Patent. By this arrangement the fire, as well as the
chambers aforesaid, is plentifully supplied with hot air, which dispenses
with the necessity of partially opening the fire door to admit cold air as
a means of reducing the quantity of black smoke emitted from the
chimney.
In the case of a Cornish or tube boiler, 1 cause the air to pass
through an opening in the brick work forming the bridge, and along a

page_text: tube inside the tube of the boiler. The air tube, after traversing the
length of the boiler, then splits or divides into two tubes, which proceed
from the back end of the boiler along each side of the boiler tube, and
also each side of the fire, to the dead plate, through which the heated
air passes to the fire, and from thence to the chambers aforesaid. It
will therefore be seen that the air is heated by passing through tubes
which are inside the boiler tube. The aperture at the bridge is
provided with a valve or valves, as herein-before described.
Inwitness whereof, I, the said Benjaman Price, have hereunto
set my hand and seal, this Fifteenth day of April, in the year
..of our Lord One thousand eight hundred and fifty-four.,
: