IMPROVEMENTS IN FURNACES FOR OBTAINING PERFECT COMENCETAX OF F
Year: 1866

page_text: LETTERS PATENT to Josiah Hampton, Engineer, of the Firm of Hampton
and Company, Refrigerator Manufacturers, carrying on business at
Loughborough, in the County of Leicester, and for and on behalf of the
said Firm, for the Invention of "IMPROVEMENTS IN FURNACES FOR OBTAINING
PERFECT COMENCETAX OF FINDI
Sealed the 16th November 1866, and dated the 17th May 1866.
PROVISIONAL SPECIFICATION left by the said Josiah Hampton at
the Office of the Commissioners of Patents, with his Petition, on the
17th May 1866.
I, JOSIAH HAMPTON, Engineer, of the Firm of Hampton and Company,
Refrigerator Manufacturers, carrying on business at Loughborough, in the
County of Leicester, and for and on behalf of the said Firm, do hereby declare
the nature of the said Invention for "IMPROVEMENTS IN FURNACES FOR OBTAINING
PERFECT COMBUSTION OF FUEL," to be as follows:-
These improvements consist, firstly, in forming or arranging the fire-bars of
a furnace in such manner that their upper surfaces may form the are of a
circle, by which means the superficial heating surface is increased and greater
facility afforded for the admission of air between the bars. Secondly, I
employ a perforated moveable bridge plate which is inclined from or towards
the front of the furnace or towards the part where such furnace is fed; this
perforated bridge plate when in combination with the back bridge plate here-
tofore used will form a chamber for admission of air, the admission of air to

page_text: the chamber being controlled and regulated by means of a door or valve
capable of being closed or opened when the furnace door is closed or opened,
for which purpose an adjustable connecting rod is attached to the door or
valve and to an adjustable rack and swivel or equivalent contrivance which
may be attached to the door of the furnace, by which means I am enabled to
regulate the admission of air through the perforated plate as required, and
thereby perfect combustion is obtained.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Josiah Hampton in the Great Seal Patent Office on the
17th November 1866.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOSIAH
HAMPTON, Engineer, of the Firm of Hampton and Company, Refrigerator
Manufacturers, carrying on business at Loughborough, in the County of
Leicester, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventeenth day of May, in the year of our
Lord One thousand eight hundred and sixty-six, in the twenty-ninth year
of Her reign, did, for Herself, Her heirs and successors, give and grant
unto me, the said Josiah Hampton, Her special licence that I, the said
Josiah Hampton, my executors, administrators, and assigns, or such others
as I, the said Josiah Hampton, 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, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN FURNACES FOR OBTAINING PERFECT COMBUSTION OF FUEL,"
upon the condition (amongst others) that I, the said Josiah Hampton,
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 Josiah Hampton, 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 fol-

page_text: lowing statement thereof, reference being had to the accompanying Drawings;
and to the figures and letters marked thereon, that is to say:→
These improvements consist, firstly, in forming or arranging fire-bars in
such manner that their upper surfaces form an arc of a circle, by which means
the superficial heating surface is increased and greater facility is thereby
afforded for the admission of air between the bars. Secondly, according to
my improvements I employ a perforated moveable bridge plate inclined from
or towards the front of the furnace or from or towards that part where such
furnace is fed. This perforated bridge plate when employed in combination
with the ordinary back bridge plate heretofore used will form a chamber for
the admission of air, the air being admitted to this chamber by means of a
door or valve capable of being closed or opened when the furnace door is
closed or opened; this said door or valve which admits air to the said chamber
as aforesaid is opened and closed by means of an adjustable connecting rod.
attached to the said door or valve, and attached also to an adjustable rack
and swivel or equivalent contrivance; this said rack and swivel or equivalent
contrivance is attached to or connected with the door of the furnace, by which
means I regulate the admission of air through the perforated plate, as required;
whereby perfect combustion is obtained.
Low Sanned to contain

page_text: of the door or valve; but in the views which follow those before-mentioned
the furnace door is shewn as arranged for it to open to the right of the centre
of the door or valve.
Figure 3 is a sectional view exhibiting my improvements as applied to the
furnace of a brewing pan or copper having its bottom convex on its under
side, and Figure 4 shews the improvements applied to the furnace of a similar
pan or copper having its bottom concave on its under side; both the Figures
are shewn in section in the direction of the length of the furnace bars. In
the furnace of each pan a like shaped moveable perforated bridge plate may
be employed, such perforated bridge plate and the air door or valve are shewn
in their respective positions in front view at Figure 5.
Figure 6 shews my improvements as applied to the furnace of a round
boiler with spherical ends; a portion of the front end of such boiler with the
furnace is shewn in section in the direction of the length of the fire-bars.
Figure 7 represents a like view in section, as seen through the greatest
depth of the fire-bars shewing the front of the perforated plate and air valve,
and in Figure 8 a similar view is given of my improvements as applied to the
furnace of a waggon-shaped boiler.
In the above Figures, A is the boiler or the pan or copper; B is the brick-
work supporting the same; C is the ash-pit of the furnace; D are the
fire-bars; E is the furnace door through which the furnace is fed with fuel.
At the opposite end of the fire-bars to the furnace door I employ a perforated
moveable bridge plate F which is inclined from the front of the furnace ;
this perforated bridge plate is made of shapes to suit the shape (or arrange-
ment) of the furnace to which it is applied, as would be obvious to any
ordinary intelligent furnace builder or engineer. This bridge plate F being
used in combination with the ordinary back bridge plate G, as shewn, forms
a chamber H for the admission of air which is admitted to this chamber by
opening a door or valve I capable of being closed or opened (when the furnace
door E is closed or opened) by means of a connecting rod K which is attached
at one end by a knuckle or hinge to the door or valve, and it has its other
end formed into a screw upon which is a rack L, which is rendered capable of
adjustment by the screw. The rack L receives a pin in a swivel M or equi-
valent contrivance; this swivel or its equivalent is attached to the door E of
the furnace. By this arrangement the doors F and E open and close together,
and I am thus enabled to regulate the admission of air through the perforated
plate as required, perfect combustion is thus obtained, as the air passing
through the perforations unites with the products of combustion and bursts
into flame, which flame will pass along the flue or flues in the direction of the

page_text: arrows, no smoke whatever being perceptible as arising therefrom. When
circular boilers have double flues and furnaces such flue and furnace are
furnished with my improvement, as shewn at Figures 1 and 2.
Having now described the nature of my said Invention, and in what
manner the same may be performed, I declare that I claim,-
First, the employment of an inclined perforated bridge plate, substantially
in the manner and for the purpose set forth.
Second, the arrangement and combination of parts, substantially as
described.
In witness whereof, I, the said Josiah Hampton, have hereunto set my
hand and seal, this Fifteenth day of November, in the year of our
Lord One thousand eight hundred and sixty-six.
Witness,
GEO. JON. ROBINSON,
Patent Office,
Nottingham.
JOSIAH HAMPTON. (L.S.)