AN IMPROVED ARCH COMBINATION FOR FURNACES. DAVI SURADA OD TAT " AND RAKE, EITHER SEPARATELY OR IN- COMBINATION, FOR FUR- NACES
Year: 1875

page_text: LETTERS PATENT to Edward Newbold, of the Town and County of
the Town of Nottingham, for the Invention of "AN IMPROVED ARCH
COMBINATION FOR FURNACES.
DAVI
SURADA OD
TAT
"
PROVISIONAL SPECIFICATION left by the said Edward Newbold at the
Office of the Commissioners of Patents, with his Petition, on the
7th May 1875.
I, EDWARD NEWBOLD, of the Town and County of the Town of Not-
tingham, do hereby declare the nature of the said Invention for "AN
IMPROVED ARCH AND RAKE, EITHER SEPARATELY OR IN- COMBINATION, FOR FUR-
NACES," to be as follows:-
My improved arch may be constructed of wrought iron, fire-clay,
wirework, masonry, or brickwork.
When made of iron or fire-clay it may be made in sections of various
lengths to adapt it to furnaces of different dimensions, and these
sections may be divided longitudinally into two or more sections, the
whole being bolted or grooved together.

page_text: My improved arch consists of an under arch or plate perforated to
allow of the escape or outlet of the heat from the furnace, and an upper
arch or plate which is not perforated, but which serves as a cover for
the protection of the perforated plate, and prevents any substance or
liquid from falling through, a space being left between the upper and
under plates or arches.
My arch, when inverted and placed under the fire, will also act as a
receiver of the cinders, the ash from such cinders passing through the
perforations.
The said arch can be attached by hooks or bolts to the under sides of
the bars in the furnace.
When movable I apply the said arch to existing furnaces by intro-
ducing at each side of the furnace a bar, having a longitudinal groove
in its upper surface, in which groove the bottom of the said arch rests;
or a longitudinal bar fastened either on the inner sides of the arch
itself or on the extreme back and front of the furnace; and on this bar
is a slide fastened to a piece of iron running across the furnace and
entire length of the furnace or arch attached to a ring or handle out-
side the furnace, thus allowing of cleaning or raking the furnace bars
without opening the furnace door.
These arches may be fitted with perforated ends, which tend to the
consumption of the smoke.
When constructed of brickwork or masonry, and built over the
furnace, I provide for the egress of the heat by forming apertures in the
said brickwork or masonry. These apertures are elbow-shaped, so that
the direct opening from the furnace is protected.
My improved arch, by protecting the boiler plates from the direct
action of the fire, prevents the said plates burning, and also protects the
bars in salt pan and other furnaces from being covered or choked up by
the leakage or escape of brine or other fluids. I also secure a more
thorough combustion of the fuel.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Edward Newbold in the Great Seal Patent Office
on the 5th November 1875.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, EDWARD
NEWBOLD, of the Town and County of the Town of Nottingham, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her.
Letters Patent, bearing date the Seventh day of May, in the year of our
Lord One thousand eight hundred and seventy-five, in the thirty-eighth
year of Her reign, did, for Herself, Her heirs and successors, give and
grant unto me, the said Edward Newbold, Her special licence that I, the
said Edward Newbold, my executors, administrators, and assigns, or such
others as I, the said Edward Newbold, 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 ARCH AND RAKE, EITHER
SEPARATELY OR IN COMBINATION, FOR FURNACES," upon the condition (amongst
others) that I, the said Edward Newbold, 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 Edward Newbold, 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, reference being had to the accompanying Drawing,
forming a part of this Specification:--
My improved arch may be constructed of wrought iron, fire-clay,
wirework, masonry, or brickwork.
When made of iron or fire-clay it may be made in sections of various
lengths to adapt it to furnaces of different dimensions, and these sections
may be divided longitudinally into two or more sections, the whole being
bolted or grooved together, or not.

page_text: My improved arch consists of an under arch or plate perforated to
allow of the escape or outlet of the heat from the furnace, and an upper
arch or plate, which is not perforated, but which serves as a cover for
the protection of the perforated plate, and prevents any substance or
liquid from falling through, a space being left between the upper and
under plates or arches.

page_text: Figure 5 shows a segment of the arch as constructed, when used
without the inverted arch or sifter.
Like letters indicate like parts in all the Figures.
My improved arch is made in segments A, which are perforated and
provided with flanges a for securing them together. The said arch rests
in bars B, which are provided with flanges b on their under sides for
supporting the inverted arch or cinder sifter. The said arch may be
fitted with perforated ends a'.
C is my improved rake, and D the supports in the last segment of
arch for the said rake. The said rake is operated by the rods E working
in tubes F at each side of the furnace, the said rods being provided with
handles G outside the furnace. G are the furnace bars; G", the
bearers for the same; and G", the ordinary furnace door; H is the
inverted arch used as a receptacle for and sifter of the cinders. This is
.made whole instead of in segments, and provided with perforations /
and door I. The said arch or sifter slides in the flanges 6 of the bars B,
and is operated by the lever or handle J.
The plate K, shown in Figure 3, is used in some cases to protect the
arch from liquids or other matters falling upon it. In other cases the
arch shown in Figure 4 is used for the same purpose.
structed of brickwork or masonry, the apertures as they near the crown
being made angular or elbow-shaped.
This arch is con-
When used without the sifter the arch may be made in segments of
the form shown in Figure 5, provided with flanges a and pins a¹¹.
My improved arch, by protecting the boiler plates from the direct
action of the fire, prevents the said plates burning, and also protects the
bars in salt pan and other furnaces from being covered or choked up by
the leakage or escape of brine or other fluids. I also secure a more
thorough combustion of the fuel.
In witness whereof, I, the said Edward Newbold, have hereunto
set my hand and seal, this Second day of November, in the
year of our Lord One thousand eight hundred and seventy-five.