Certain Improvements in the Construction of Gas Retort-settings and Regenerator Furnaces for the same.
Year: 1896

page_text: Date of Application, 15th Oct., 1896
Complete Specification Left, 10th, Aug., 1897-Accepted, 11th Sept., 1897
:
Certain Improvements in the Construction of Gas Retort-settings and
Regenerator Furnaces for the same.
I, GEORGE ERNEST STEVENSON, of Claremont Crumpsall, Manchester, in the
County of Lancaster, Gas Engineer, do hereby declare the nature of this Invention
to be as follows:-
This Invention has reference to the construction of inclined and horizontal
gas retort settings and regenerator furnaces for the same."
Heretofore it has been usual to stop off the producer arch at the inside of the
front and back walls and to build up the projecting portion of the producer in the
front of the retort setting, and which contains the firing hole, separate from the
arch and internal part of the producer in which case the said projecting portion
is liable to crack and break away so as to let air in to the sides and top of the
producer.
According to the first part of this Invention I overcome this defect as follows:-
I build the arch and sides of the producer in such a manner that they are carried
through the front and back walls of the retort setting and made to project forward
of the front wall such a distance as may be necessary in order to provide room for
the construction of the firing hole in the crown of the arch of the producer. The
said firing holes I form by preference by using specially shaped fire clay bricks
which fit in the courses of the arched bricks, but it is not necessary to this part
of my invention that the special shaped fire clay bricks be used, the
essential feature of this part of my Invention being that the firing
hole is constructed in the crown of the producer and that the arch
and walls of the producer are carried through the front walls and
made to project in the front of the retort setting as aforesaid, thus
the portion of the producer which projects forward in front of the retore
setting and which contains the firing hole in the crown of the arch is not separate
from the arch as heretofore, and therefore is not liable to crack and break away.
The second part of this Invention has reference to the construction of the
regenerator flues of the retort settings which I build of special shaped fire clay
tiles so as to prevent or minimise the probability of leakage of air from the air
flues into the waste gas flues and to enable the said flues to be more easily put
together than when the sides are built of bricks as heretofore.
In carrying out this part of my invention I build the said flues of vertical fire
clay tiles which are made the full depth of the flue and have their sides curved out-
wards at the top and bottom in order to provide a wide bearing surface for the joints
at the base and with the covering tiles than the thickness of the tile would admit
of if made with straight parallel sides. The covering tiles which are placed
horizontally on the vertical tiles to form the floor and roof of the flues are made
with projecting lugs on the lower side, or on the lower and upper sides, between
which the edges of the vertical tiles are confined. When the lugs are made on
the lower side of the covering tiles only then the bottom edges of the vertical
tiles are held in position by thin fire clay slabs laid between them. The said cover-

page_text: ing tiles may if preferred be made with recesses instead of lugs into which recesses
the edges of the vertical tiles are sunk. It will be seen that by constructing the
flues of tiles shaped as above described the said flues can very readily be built and
as the joints are much fewer and the bearing surfaces wider there is less probability
of the air escaping into the waste gas flues than heretofore.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.
Certain Improvements in the Construction of Gas Retort-settings and
Regenerator Furnaces for the same.
I, GEORGE ERNEST STEVENSON, of Claremont, Crumpsall, Manchester, in the
County of Lancaster, Gas 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 has reference to the construction of inclined and horizontal
gas retort settings and regenerator furnaces for the same.
Heretofore it has been usual to stop off the producer arch at the inside of e
front and back walls and to build up the projecting portion of the producer in the
front of the retort setting, and which contains the firing hole separate from the
arch and internal part of the producer in which case the said projecting portion
is liable to crack and break away so as to let air in to the sides and top of the
producer.
The
According to the first part of this Invention I overcome this defect as follows:
I build the arch and sides of the producer in such a manner that they are carried
through the front and back walls of the retort setting and made to project forward
of the front wall such a distance as may be necessary in order to provide room for
the construction of the firing hole in the crown of the arch of the producer.
said firing holes I form by preference by using specially shaped fire clay bricks
which fit in the courses of the arched bricks, but it is not necessary to this part
of my invention that the special shaped fire clay bricks be used, the
essential feature of this part of my Invention being that the firing
hole is constructed in the crown of the producer and that the arch
and walls of the producer are carried through the front walls and
made to project forward in the front of the retort setting as aforesaid, thus
the portion of the producer which projects forward in front of the retort
setting and which contains une firing hole in the crown of the arch is not separate
from the arch as heretofore, and therefore is not liable to crack and break away.
This part of my Invention will be clear by an examination of Figs. 1, 2 and 3
of the accompanying drawings which are sections of inclined gas retort settings
and regenerative furnaces for the same with the producer arch constructed in
accordance with my Invention. The left hand part of Fig. 1 is a vertical section
on line A A of Figs. 2 and 3 and the right hand part of Fig. 1 is a vertical section
on line B B of Figs. 2 and 3; Fig. 2 is a vertical section on line C C of Fig. 1
and Fig. 3 is a vertical section on line D D of Fig. 1. E is the front wall of the
retort setting and F is the back wall of the same; G is the gas producer and H
is the arch of the producer carried by the side walls h¹ h2. The side walls h¹ h³ and
the arch H are carried through the front wall E (see Fig. 3) and made to project
forward of the same, and the firing hole I is made in the top part of the pro-
ducer arch where the latter projects in front of the front wall E. It will be

page_text: understood that the end wall J of the producer is built separate from the front
wall E of the retort setting, the wall J being built to fill in the end of the arch H
between the side walls h h and to receive the fire grate fittings . Thus the
part of the arch H containing the firing hole I and the parts of the side walls h¹ h
which project in front of the front wall E are not liable to crack and fall away
as they are built as part and parcel of the other part of the arch H and side
walls which are contained within the retort setting.
The second part of this Invention has reference to the construction of the
regenerator flues of the retort settings which I build of specially shaped fire clay
tiles so as to prevent or minimise the probability of leakage of air from the air
flues into the waste gas flues and to enable the said flues to be more easily put
together than when the sides are built of bricks as heretofore.
The retort setting illustrated by Figs. 1, 2 and 3 of my drawings above referred
to has the regenerator flues built of the specially shaped fire-clay tiles in accord-
ance with the second part of my Invention; Fig. 4 is a cross section of one of
the gas flues and one of the air flues on an enlarged scale and Fig. 5 shews one
of my improved covering tiles separately.
The air flues are marked L and the waste gas flues are marked M. In the
particular setting illustrated by my drawings the gas which is generated at the
producer G passes through the outlet ports in the producer arch H and there
meets with the hot air which passes along and up the air flues I to the air outlets /
so that the gas burns round the retorts N and the waste gases pass down and
through and along the ports m and along the flues M thereby heating the walls
of the air flues L and ultimately pass out through the main waste gas flue R to
the stack.
The general arrangement of the air and waste gas flues shewn upon my draw-
ings forms no part of my Invention but I have thought it well to illustrate and
describe the same so as to more clearly shew my improved construction which
forms the second part of my Invention and which I will now describe. I build
the said air flues L and waste gas flues M of vertical fire-clay slabs which are
made the full depth of the flue (see Fig. 4) and have their sides next the flue or
flues curved outwardly at the top o' and at the bottom o² in order to provide a
wider bearing surface for the joints at the base and with the covering tiles P
than the thickness of the vertical tiles would admit of if made with straight
parallel sides. The covering tiles P which are placed horizontally on the
vertical tiles O to form the floor and roof of the flues are made with projecting
lugs pl on the lower side (or on the lower side and upper side) b. tween which the
edges of the vertical tiles O are confined. When the lugs are made on the lower
side of the covering tiles only, as shewn in Figs. 4 anu 5, then the bottom edges
of the vertical tiles O are held in position by thin fire-clay slabs Q laid between.
It will be seen that by constructing the flues L and M of tiles shaped as above
described the said flues can very readily be built and as the joints are much
fewer and the bearing surfaces wider there is less probability of the air escaping
from the air flues L into the waste gas flues M than heretofore.
Instead of the covering tiles P being made with the lugs p' the said covering
tiles may if preferred be made with recesses into which the edges of the vertical
tiles O are sunk.
It is to be understood that I am well aware that prior to my Invention hereof
the vertical tiles of the regenerator flues of gas retort settings have been built.
with vertical slabs made with their sides curved outwardly at the top and bottom
and that therefore I do not claim these vertical tiles except in combination with
the improved covering tiles which I have described for forming the floor and
roof of the flues made with the lugs p at one or both sides between which the
vertical tiles fit as above described.
My Invention is applied to horizontal gas retort settings and regenerator
furnaces for the same similarly as above described with reference to inclined
gas retort settings and their regenerator furnaces.

page_text: 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:
1. In gas retort settings and regenerator furances for the same, building the
gas producer arch and side walls through and forward of the front wall of the
retort setting and constructing the firing hole in the said projecting part of the
crown of the producer arch to prevent the front of the producer from cracking
and falling away, substantially as described.
2. Constructing regenerator flues of gas retort settings of vertical fire-clay
tiles made the full denth of the flue with their sides curved outwardly at top and
bottom in combination with horizontal fire-clay covering tiles inade with pro-
jecting lugs on one or both sides between which the edges of the vertical tiles
are confined, substantially as and for the purpose described.
3. Constructing the regenerator flues of gas retort settings of vertical fire-clay
tiles made the full depth of the flue with their sides curved outwardly at top and
bottom, in combination with horizontal fire-clay covering tiles made with lugs
on the underside between which the upper edges of the vertical tiles are confined,
and thin slabs between the lower edges of the vertical tiles substantially as rein-
before described and lustrated by Fig. 4 of the accompanying drawings.
1. The fire-clay cokering tiles P made with the proiecting lug or lugs p
substantially as and for the purpose described.
Dated this 9th day of August 1897.
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.