Improvements in Furnaces.
Year: 1896

page_text: Date of Application, 14th Apr., 1896-Accepted, 30th May, 1896
Improvements in Furnaces.,
I, WALTER ROBERTS JONES, of the Gas- Works, Rome, in the Kingdom of Italy,.
Civil Engineer, 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:-
This invention relates to improvements more particularly applicable to the
heating of gas retorts but which are also applicable to furnaces generally, the
object of the invention being to provide means for maintaining a regular and
continuous heat with small cost of construction and economical working.
In the accompanying drawings which illustrate a furnace for heating gas retorts,.
constructed according to my invention:-
Figure 1 is a cross section on the line C-D of Figure 2:
Figure 2 is a longitudinal section on the line A-B of Figure 1:
Figure 3 is a front elevation:
Figure 4 is a section on the line E-F of Figure 1, and,
Figure 5 is a section on the line X-Z of Figure 1.
The furnace is constructed as follows:-
The sides and back of the furnace G, G, G are built with a smooth surface and
inclined towards the centre to enable the clinker to more easily slide down. The
said sides and back terminate at the bottom with a deep slit H running from end
to end. Below this slit H and on each side of the same there is a channel I com--
municating with the atmosphere. The air is drawn in by the chimney and heated
by the waste heat leaving the furnace through the horizontal flue T. Dampers or
valves K, K are placed at the inlet of these channels I for the purpose of regulating
the quantity of air necessary for the combustion of the solid fuel. On either side, below
the horizontal flues L, L, which run under the lower retorts, are movable tubes or
pipes M, M of metal, fireclay or other refractory material. These tubes or pipes.
communicate with the fixed setting by the branch pipes V and then with
channels N, N formed in large blocks which have a number of small passages 0, 0, 0.
opening into the flues P, P surrounding the retorts. The said tubes or pipes can be
withdrawn from the horizontal flues without interfering with the working of the
furnace. The accompanying drawings show the tubes M, M placed below the
horizontal flues, but they can, if desired, be placed in the horizontal flues as
indicated by the letters R. R. The air is drawn into the tubes by the draught of
the chimney, its passage being shown by the arrows in Figure 5.
Although I prefer to normally work the furnace with heated air, provision is.
also made for the introduction of cold air below the slit, a screen or wind-guard Q:
being provided to prevent a too sudden inrush of cold air. In this case the
channels I, I are usually not used.
The draught of the furnace can be regulated by the suspended register S, as.
shewn in Figures 2 and 3.
My improved furnace possesses the advantage that it can be profitably worked
either as a generator or regenerator, which is not the case with furnaces as.
heretofore constructed.
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. A furnace having smooth inclined sides and back terminating at the bottom.
with a slit, substantially as, and for the purposes, hereinbefore described.

page_text: 2. In a furnace of the kind described the employment of movable tubes or pipes
of metal, fireclay or other refractory material for heating the air. introduced into
the furnace, substantially as, and for the purpose, herein before described.
3. In a furnace of the kind described the use of a screen or wind-guard,
substantially as, and for the purpose, hereinbefore described.
4. The combination and arrangement.of parts forming the combined generating
and regenerating furnace hereinbefore described and illustrated in the accompanying
drawings..
Dated the 14th day of April 1896.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.