IMPROVEMENTS IN FURNACES
Year: 1853

page_text: PROVISIONAL SPECIFICATION left by William Moore at the
Office of the Commissioners of Patents, with his Petition, on the
5th May 1858.
(Void by reason of notice to proceed not having been given within the
time prescribed by the Act.)
I WILLIAM MOORE, of Duke Street, Lambeth, in the County of
Surrey, Engineer, do hereby declare the nature of the said Invention
for IMPROVEMENTS IN FURNACES" to be as follows:--
My Invention consists, firstly, in a peculiar arrangement of the
flame bed of furnaces, by means of which I am enabled to heat a large
body of air; secondly, in applying the air so heated to the ashpit and
bridge, or either of them; and, thirdly, in employing the hot air for
general heating or drying purposes.
And that my said improvements may be fully understood I will now
proceed to describe the Drawing hereunto annexed, reference being had
to the letters marked thereon.

page_text: Fig. 1, is a longitudinal section of my improved furnace applied to a
Cornish boiler; A, B, being the furnace grate; C, the flue leading
under and round the boiler, and thence to the chimney; D, the bridge,
having a chamber or recess in the flame bed at E, and a perforated iron
plate, tile, or bricks at F, immediately behind the bridge, so arranged
that air passing through the air flue, shown by the dotted lines G, H,
entering between the bridge D, and the plate F, can only escape into
the furnace through the perforations in numerous small jets, so as to
mix with and promote the combustion of the gases passing from B
over the bridge D. The ashpit I, is closed entirely in front by close-
fitting iron doors O. The flame bed is entirely covered over from J.
to K, with iron plates or tiles, and being hollow beneath affords an air
chamber or flue L, constantly supplied with fresh air at M, which,
passing in a heated state towards the bridge, escapes through an aper-
ture therein at N, into the ashpit I, by which means the fuel on the
bars is supplied with heated air; and by making the air flue G, II, open
into the ashpit I, the air heated in the flue L, M, N, will also pass
through the perforated plate F, when so required; but I prefer employ-
ing the air at the common atmospheric temperature for the ignition of
the gases, and heating the air only for the solid fuel on the bars.
I would here observe, that by having a door or valve in the bridge
opening at N, so as to close it, and by throwing open the ashpit
doors O, the heated air in L, M, N, may be conveyed to drying
rooms, or used for other like purposes, the air then requiring to be
forced through M, with a fan or by other suitable means.
And although I have thus exactly described one plan of setting up a
furnace according to my Invention, I would have it understood that I
do not limit myself to the use of plates of any particular material for
the flame bed, as the intended object may be obtained by one, two, or
more pipes of metal or fire clay laid the whole length of the flame
bed; neither do I restrict myself to any particular dimensions, so long
as the air is confined and heated at the flame bed, and conveyed thence
to a closed ashpit, or otherwise applied. I do not claim the double
bridge with its perforated plate, which I am aware has been in frequent

page_text: use; but I do declare that what I claim as my Invention is, the
peculiar construction of furnaces for heating air by the waste heat of
the flame bed for the purposes described.