Improvements in Furnaces.
Year: 1894

page_text: Date of Application, 4th Dec., 1894
Complete Specification Left, 29th Jan., 1895-Accepted, 24th May, 1895
PROVISIONAL SPECIFICATION.
Improvements in Furnaces.
I THOMAS RICHARDS of Stonelees St. Austell Cornwall, England, China-clay
Agent do hereby declare the nature of this invention to be as follows:-
My invention has for its object to effect as completely as possible the combustion
of smoke in china-clay, and other furnaces and the consequent economy of the fuel.
This object is attained by the means hereinafter described. The kiln and grate of
the furnace are of the ordinary construction. The flues, of which there may be
any convenient number, and which may extend longitudinally, are formed with a
deep depression of their mouths which open on to the back of the furnace.
Immediately above the inner ends of the bars of the grating is a ledge of a suitable
material and a convenient depth, at a sufficient distance outside which ledge is a
wall extending from the top of the furnace to the base of the aforesaid ledge,
underneath which wall the flues run. By this arrangement the smoke being
confined within the furnace is prevented to a large extent from escaping, and is
consumed as completely as possible.
Dated this 4th day of December 1894.
THOMAS RICHARDS.
Improvements in Furnaces.
1 THOMAS RICHARDS of Stonelees St. Austell, Cornwall, England, China-clay
Agent, do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement :-
My invention has for its object to effect as completely as possible the combustion
of the smoke in china-clay, and other furnaces, and the consequent economy of the
fuel. This object is attained by the means hereinafter described, which will be
easily understood by reference to the accompanying drawings, in which
Figure 1 is a plan.
Figure 2 is a longitudinal section on the line xx.
Like letters of reference designate like parts throughout the several views.
Above the inner ends of the bars of the grate a Figures 1 & 2 is a ledge b of any
convenient material and depth. The wall c Figures 1 & 2 is at a convenient
distance from the ledge b, and extends from the top of the furnace to the base of
the ledge. The flues d, d, d Figure 1, of which there may be any convenient
number, are deeply depressed at the parts d', d', d¹ Figure 1 and open at the
The flues at the
inner ends of the bars of the grate, a, Figures 1 & 2.
depressions d', d', d' run under the wall c Figs. 1 & 2, and may extend
longitudinally as shown in said figures. The doors e, e Figs. 1 & 2 are for the
purposes of enabling the cleaning of the flues and giving extra draught thereto
when necessary. The arrows shown in Fig. 2 indicate the course of the flame
from the grate. The smoke being confined within the furnace by means of the
ledge b, and the wall c, Figs. 1 & 2, is prevented to a large extent from escaping,
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page_text: and is consumed as completely as possible, and the small coal or culm is largely
retained in the grate instead of being blown through the flues and lost.
My invention is also applicable to steam-generators, and, when so applied, the
wall c, Figure 3, Sheet 2, has a flue of sufficient size in its centre, and is built close
up to the steam-generator, and is provided with a door, e, for cleaning purposes.
A. second wall, c¹, Fig. 3, Sheet 2, is built at a convenient distance behind the wall c,
but does not extend to the steam-generator. By this arrangement the heat is
carried into the space between the walls c, & c', under the steam-generator before
it escapes as shown by the arrow at the top of the wall, c', into the flue, d, Fig. 3
Sheet 2.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. In a furnace the ledge b, the wall c, and the deep depressions d', d¹, d'all
delineated in Figures 1 & 2, substantially, as and for the purposes herein
specified.
2. In a furnace the general construction of the flues in the manner, and
substantially as and for the purposes herein specified.
3. The application of the means herein specified to steam-generators substantially
as and for the purposes herein stated.
Dated this 16th day of January 1895.
THOMAS RICHARDS.