AN IMPROVED FURNACE OR. FIRE-PLACE, ESPECIALLY ADAPTED TO THE SINGEING OF PIGS
Year: 1861

page_text: LETTERS PATENT to Robert Andrew Boyd, of Southwark, in the County-
of Surrey, Merchant, for the Invention of "AN IMPROVED FURNACE OR.
FIRE-PLACE, ESPECIALLY ADAPTED TO THE SINGEING OF PIGS."
Sealed the 22nd April 1862, and dated the 24th October 1861.
PROVISIONAL SPECIFICATION left by the said Robert Andrew Boyd at
the Office of the Commissioners of Patents, with his Petition, on the
24th October 1861.
I, ROBERT ANDREW BOYD, of Southwark, in the County of Surrey,
Merchant, do hereby declare the nature of the said Invention for "AN
IMPROVED FURNACE OR FIRE-PLACE, ESPECIALLY ADAPTED TO THE SINGEING OF
PIGS," to be as follows:-
My improved furnace or fire-place consists of a series of bars let into two
rings, one at top and the other at bottom, and of a cylinder or grating placed
behind and at some distance from the series of bars. The fuel is placed
between the bars and the cylinder or grating. The fire-place is supported at
some distance from the ground to allow of air passing up, into, and through the
fuel to support combustion. To prevent loss of heat by radiation, I surround
the outer cylinder with brickwork or fire-clay.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Robert Andrew Boyd in the Great Seal Patent Office on
the 24th April 1862.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
ANDREW BOYD, of Southwark, in the County of Surrey, Merchant, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fourth day of October; in the year of our
Lord One thousand eight hundred and sixty-one, in the twenty-fifth year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
me, the said Robert Andrew Boyd, Her special licence that I, the said
Robert Andrew Boyd, my executors, administrators, and assigns, or such
others as I, the said Robert Andrew Boyd, 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 "AN IMPROVED FURNACE OR FIRE-PLACE, ESPECIALLY ADAPTED
TO THE SINGEING OF PIGS," upon the condition (amongst others) that I, the
said Robert Andrew Boyd, my executors or administrators, by an instrument
in writing under my, or their, or one of their hands and seals, should par-
ticularly 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 Robert Andrew Boyd, do hereby declare
the nature of my said. Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement thereof, reference being had to the Drawings hereunto annexed,
that is to say—
My improved furnace or fire-place consists of a series of bars let into two
rings, one at top and the other at bottom, and of a cylinder or grating placed
behind and at some distance from the 'series of bars. The fuel is placed
between the bars and the cylinder or grating. The fire-place is supported at
some distance from the ground to allow of air passing up, into, and through
the fuel to support combustion. To prevent loss of heat by radiation, I
surround the outer cylinder with brickwork or fire-clay.
The accompanying Drawing is a vertical section of this furnace or fire-place.

page_text: a, a, are the fire-bars let into a ring 6 at top, and into a similar ring c at
bottom; d is the cylinder surrounding the bars; the space e between the
cylinder and the bars forms an annular chamber, in which the fuel is placed;
f is the fire-brick casing; 9, 9, are legs supporting the furnace off the ground,
and forming a frame between which the carcases pass; h, h, are doors for
feeding the furnace with fuel; and h¹ is the ash-pit. When the furnace is
used for singeing pigs, a chain i is guided down the shaft & from the pulley
above, and thence led to a windlass m. The carcase of the pig to be singed is
suspended from the chain, as shewn, and by means of the windlass is passed
through the central aperture o in the furnace.
And having now described the nature of my said Invention, and in what
manner the same is to be performed, I declare that I claim, the construction
of furnaces or fire-places especially adapted to the singeing of pigs, sub-
stantially in manner-herein-before described and illustrated in the accompanying
Drawings.
In witness whereof, I, the said Robert Andrew Boyd, have hereunto
set my hand and seal, this Twenty-fourth day of April, One thousand
eight hundred and sixty-two.