Improvements in the Manufacture of Retorts of Refractory Material.
Year: 1894

page_text: Date of Application, 28th July, 1894
Complete Specification Left, 24th Apr., 1895-Accepted, 8th June, 1895
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Retorts of Refractory
Material.
We, NESTOR TEISSIER and GEORGES LOUIS ALBERT NÉGRE, both of Uzès,
Département du Gard, in the Republic of France, Manufacturers of Refractory
Products, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in the manufacture of retorts of
refractory material particularly of those intended for the manufacture of gas,
the object of the invention being to provide retorts which shall have as great a
resistance to beat, which shall be as easily manipulated and adapted for transport
as those hitherto generally employed and which shall have a greater extent of
heating surface and be more permeable to heat.
According to our invention instead of making the retorts with thick and smooth
walls as hitherto we form them with walls of comparatively less thickness and
with undulating surfaces, such undulations being arranged either longitudinally
or transversely and extending either over the whole surface or over only a part
as may be desired.
D: 1. 1904
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicants.
improvements in the manufacture of Retorts of Refractory
Material.
We, NESTOR TEISSIER and GEORGES LOUIS ALBERT NÉGRE, both of Uzès,
Département du Gard, in the Republic of France, Manufacturers of Refractory
Products, 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 in the manufacture of retorts of
refractory material particularly of those intended for the manufacture of gas, the
object of the invention being to provide retorts which shall have as great a
resistance to heat, which shall be as easily manipulated and adapted for transport
as those hitherto generally employed and which shall have a greater extent of
heating surface, be more permeable to heat and less liable to fracture through
very high temperatures.
Generally such retorts have a thickness relatively great with respect to their
section; this thickness of 6 or 7 centimeters, or more, has been found necessary in
order to facilitate the manufacture, trausport and manipulation.
The accompanying drawing represents a transverse section of a gas retort made
according to our invention.
Instead of making the retorts with thick and plain walls as hitherto and as
shewn by the dotted lines in the drawing, we form them with walls of com-
paratively less thickness and with undulating surfaces, such undulations being
8.17

page_text: arranged either longitudinally, or transversely, and extending either over the
whole surface, or over only a part as may be desired.
It is well known that the thicker a wall may be, the more difficult and slow will
be the transmission of heat therethrough and this is the reason we have reduced
the thickness of the walls of our retorts, at the same time giving them a resistance
to the fire at least as great as that of ordinary retorts, allowing of their being as
easily manipulated and trausported and also insuring a greater heating surface.
The undulations while increasing the heating surface allow the retort to yield to
every slight deformation that the temperature would tend to: produce in con-
sequence, for example, of an inequality of heating whereby all cause of fracture is
avoided. The retorts can also be more securely fixed.
The longitudinal or transverse undulating surfaces may be obtained in any
suitable manner.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that
what I claim is:-
==
The manufacture of retorts of refractory material with comparatively, thin
undulating walls for the purposes set forth and substantially as herein before
described and illustrated in the accompanying.drawing.
Dated this out. 1..
+1 100%
G. F. REDFERN & Co¨¨¨
4, South Street, Finsbury, London, Agents for the Applicants.
....