Improvements in Revolving Retorts or Furnaces.
Year: 1895

page_text: Date of Application. 2nd Jan,
1005
Complete Specification Left, 1st Oct., 1895-Accepted, 7th Dec., 1895
Date of Application, u van
τους
Complete Specification Left, 1st Oct., 1895-Accepted, 7th Dec., 1895
PROVISIONAL SPECIFICATION.
Improvements in Revolving Retorts or Furnaces.
We, JOHN ARTHUR YEADON, of 4, Albion Place, Leeds, Engineer, and
WILLIAM ADGIE, Accountant, of 29, Ash Grove, Hyde Park, Leeds, both in the
County of York do hereby declare the nature of this invention to be as follows:-
Our present invention is connected with our previous Patents of November 29,
1889, No. 19183 and March 16, 1892, No. 5239, as hereinafter described, and
consists in the application or combination of the above mentioned Patents or any
parts of them with a "body" which is made of a corrugated form or section for the
purpose of securing increased efficiency and durability in working.
we mean that part of the
In our present Specification by the term "body
retort which revolves and is enclosed within the brickwork and which is directly
exposed whilst revolving to the action of the heat from the fire or furnace below,
and which from such action is liable to wear out or give way sooner than the other
parts of the retort.
"
In our previous above mentioned Patents we have described the bodies of our
retorts as of a cylindrical form having internal blades or vanes for the purpose of
constantly turning over and breaking up the different materials during their
continuous passage through the retort. In practice we find that the use of these
internal blades has a tendency to warp or crack the shell of the body in conse-
quence of the unequal expansion and contraction of the metal from its uneven
thickness. We also find that in the carbonisation or revivification of different
materials the use of these blades causes the finer portions of them to pass on up
the ascension pipe in a fine dust, thus tending to choke up the hydraulic main
and other pipe connections. Our present invention is designed to overcome these
objections.
In carrying out our present invention we preferably make these bodies of steel
or iron, but they can be also made of any other materials as found most suitable.
We also preferably make them of a conical or tapering form, but they can also be
Instead however of the plain
made of a parallel or other form if desirable.
cylindrical form, with or without internal blades, we now propose to have these
bodies made of a corrugated form or section for the threefold purpose of ensuring
greater strength in their suspended working, of securing an increased area of
conductive internal heating surface, and also of reducing to a minimum the
warping or twisting of the bodies from unequal expansion and contraction in
heating & cooling.
When using bodies of a conical form, as shown in the illustrations of the above
mentioned Patents, we make these corrugations longitudinal, i.e. running in straight
lines from end to end. In this case or form the corrugations help to turn over and
break up the materials inside, whilst by the conical or tapering form of the body
these materials are worked or carried automatically and continuously through the
retort.
When using bodies of a parallel form, we can (1) make these corrugations
longitudinal and the feeding end of the retort higher than the discharging end;
or, (2) we can make these corrugations of a spiral form like an Archimedean screw,
the pitch and number of such corrugations being adjusted to the number of
revolutions of the retort and the time required for the materials passing through
the same.

page_text: The bodies can be made sopastborbercasily connected at each end to the sockets
running on the pair of rollers, and to be quickly disconnected and replaced by new
ones when burnt out.
Our invention therefore is designed to strengthen these bodies in operation, to
increase the internal area of conductive heating surface, and to reduce the warping
of them from unequal expansion and contraction, and we propose to carry it out
substantially as above described.
Dated this First day of January 1895
improvements in Revolving Retorts or Furnaces.
We, JOHN ARTHUR YEADON, of 4 Albion Place, Leeds, Engineer, and
WILLIAM ADGIE, Accountant, of 29 Ash Grove, Hyde Park, Leeds, both in the
County of York 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:-
Our present invention is connected with our previous Patents of November 29,
1889, No. 19183, and March 16, 1892, No. 5239, as hereinafter described, and
consists in the application or combination of the above mentioned Patents or any
parts of them with a "body" which is made of a corrugated form or section, for the
purpose of securing increased efficiency and durability in working.
66
In our present Specification, by the term body" we mean that part of the
retort which revolves and is enclosed within the brickwork and which is directly
exposed whilst revolving to the action of the heat from the fire or furnace below,
and which from such action is liable to wear out or give way sooner than the other
parts of the retort.
In our previous above mentioned Patents we have described the bodies of our
retorts as of a cylindrical form having internal blades or vanes, for the purpose of
constantly turning over and breaking up the different materials during their
continuous passage through the retort. We find in working that the use of these
internal blades has a tendency to warp or crack the shell of the body in conse-
quence of unequal expansion and contraction caused by this want of uniform
thickness throughout. We also find that in the carbonisation or revivification of
different materials, the action of these blades causes the finer portions of the said
materials to pass on up the ascension pipe in a fine dust, thus tending to choke up
the hydraulic main and other pipe connections. Our present invention is designed
to overcome and remove these objections.
In carrying out our present invention we preferably make these bodies of steel
or iron, but they can be also made of any other materials found most suitable for
ensuring strength and durability. We also preferably make them of a conical or
tapering form as shown in the accompanying illustration, but they may also be
made of a parallel or other form as found most desirable. Instead however of the
plain cylindrical form with or without internal blades, we now purpose under this
invention to make these bodies of a corrugated form or section of an even or nearly
even thickness throughout in the shell for the threefold purpose of securing greater
strength in their suspended working over the fire, an increased area of internal
conductive heating surface, and last but not least, of reducing to a minimum any
warping or twisting of the bodies from unequal expansion and contracting in
heating and cooling where the shell is not of a uniform thickness.
In the accompanying illustration, Fig. 1 shows our revolving retort with a
conical or tapering body A; Fig. 3 shows this body of a corrugated section;

page_text: Figs. 2 and 4 show two different forms or sections of corrugations. Any number
of corrugations may be used, rounded internally as in Fig. 2, or sharper and more.
pointed as in Fig. 4. The corrugations turn over and break up the materials
inside the retort, whilst by the conical or tapering form of the body these materials
are worked or carried automatically and continuously through the retort.
When using bodies of a conical or tapering form as shown in accompanying
illustration, we make these corrugations longitudinal, i.e., running in straight lines
from end to end. When using bodies of a parallel form, we can (1) make these
corrugations longitudinal and the feeding end of the retort higher than the
discharging end; or, we can make these corrugations of a spiral form like an.
Archimedian screw, the pitch and number of such corrugations being suited to the
number of revolutions of the retort and the time required for the materials passing
through the same.
The bodies are made so as to be easily connected at each end to the sockets
running on the pairs of rollers, and to be quickly disconnected and replaced by
new ones when burnt out.
Our invention therefore is designed to strengthen these bodies in operation; to
increase their internal area of conducting heating surface; and making the shells
of an even thickness to reduce their warping from unequal expansion and
contraction.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
:-
1. The use or application of a corrugated body to a revolving retort in which
the actions of feeding, carbonising and discharging the materials are continuous,
mechanical, and automatic.
Dated this Thirtieth day of Sentember 1895
JOHN ARTHUR YEADON.
WILLIAM ADGIE.