Improvements in Hot Blast Stoves and similar Structures.
Year: 1890

page_text: COMPLETE SPECIFICATION.
Improvements in Hot Blast Stoves and similar Structures.
I, CHARLES HOWARD FOOTE, residing at Chicago, in the County of Cook and
State of Illinois, United States of America, Engineer, do hereby solemnly declare the
nature of my invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:―
My present invention has relation more particularly to the construction of the
partition walls, which serve to divide the lattice brick work of the stove, and the
object of my invention is to provide means whereby the construction of the lattice
brick-work, whereof the flues are composed, may be effected with more perfect align-
ment, and secondly, to enable the partition walls to be made at less expense and
with greater strength than is possible with the methods of building such stoves at
present employed.
My invention therefore consists in the various novel features of construction herein-
after described, illustrated in the accompanying drawings, and more particularly pointed
out in the claims at the end of this specification.
Figure 1 is a view in horizontal section through a hot blast stove embodying my
invention, a portion of the upper course of bricks and the two main partition walls
being broken away to expose the subjacent courses.
Fig. 2 is a perspective view of a portion of one of the main partition walls and the
adjacent lattice bricks.
Fig. 3 is a detail view of a portion of one partition wall and adjacent lattice bricks
showing a modified form of the invention.
Fig. 4 is a view similar to Fig. 3, but illustrating a further modification.
A designates the outer cylindrical wall of the stove, which is shown as formed with
the usual combustion flue B and the lattice brick work C, divided into a series of
main vertical passages by means of the partition walls D, E, F. The partition walls D
and E, illustrated in Fig. 1, are constructed of bricks G, the form of which is more
particularly illustrated in Fig. 2 of the drawings. Each of these bricks is by
preference formed with its length and breadth equal and with its corners cut away as
at g, and with the V-shaped notches or grooves g cut through its edges at their
centre, the purpose of thus forming the bricks G with the truncated corners and with
the grooved edges is to provide the faces of the partition wall with a series of vertical
grooves or channels adapted to receive the ends of the lattice bricks II, and afford a
perfect guide for the accurate alignment of such bricks during the construction of
the lattice-work, and as well also securely retain the bricks against danger of displace-
ment during use.
In constructing the partition walls D and E the bricks G will be laid in courses*
after the manner shown more particularly in Fig. 2 of the drawing, that is to say,
the second course of bricks G will be laid upon the first course in such manner as to
break joint therewith, and it will be observed that the grooves formed by the cut-away
corners g of the first course of bricks G will coincide with the grooves g³ formed in
the edges of the superposed course of bricks. It will thus be seen that there is
formed a series of continuous grooves from top to bottom of the partition wall for the
reception of the correspondingly shaped ends of the lattice bricks H, and these
grooves not only serve to enable the lattice bricks to be set in place with perfect
alignment, but also securely retain such bricks against danger of displacement. The
ends of the lattice bricks entering the grooves of the bricks G serve to more securely
lock the courses of these bricks together, and render the wall more compact, since
they act as keys between the adjacent courses of bricks. In forming the partition
walls D and E, I prefer to lay the alternate courses of bricks G in such manner that
the groove g¹ of their edges shall coincide at a central point of the wall (this being

page_text: possible by reason of the fact that the breadth and length of the bricks are equal), and
within the space thus formed by these grooves g' suitable fire-clay or cement will be
placed, which will serve to more securely lock the bricks together, and thus give
increased strength to the wall. The partition wall F is not shown as formed of
bricks, the edges of which are provided with grooves, since in practice, it has been
found that this partition wall need not possess as great strength as the partition walls
nearer to the combustion chamber of the stove. This partition wall F is therefore
formed simply of bricks having their corners cut away, as shown, to form grooves
adapted to receive the correspondingly shaped ends of the bricks H of the lattice
work.
It will be readily understood that the precise shape of the bricks G above described,
may be varied as may also be the precise manner in which they are laid. Thus,
for example, the corners of the bricks G might be cut away in such manner as to
form curved grooves, adapted to receive the lattice work bricks having correspondingly
curved or rounded ends, and if such construction be followed, the grooves g₁ in the
edges of the bricks will also be of curved outline.
In the modification illustrated in Fig. 4, the bricks forming the partition wall, have
their corners cut away and their edges curved in a manner somewhat different from
that illustrated in the above described figures, and in this modification also the bricks
of the lattice work are formed of correspondingly modified construction. It will be
readily seen, however, that while many modifications of the details of construction
may be thus suggested each will be found to embody in whole or in part, the
underlying principles of my invention. So, also, it will be obvious that without
departing from the spirit of my invention, the partition walls may be formed in
part of other shapes of brick than those above described, and while I regard it as
far preferable to have continuous grooves in the partition walls to receive the ends
of the lattice bricks, it is plain that it would still be within the scope of my invention
to have the grooves broken by alternate rows of bricks, the lattice bricks being so
arranged or formed as to engage with interrupted grooves, such for example, as
those shown between the continuous grooves in Fig. 2 of the drawing.
Having now particularly described, and ascertained the nature of my inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is -
1. A hot blast stove or like structure having lattice brick work, and having a
main wall or walls for sustaining said lattice brick work, said main wall or walls
being constructed with bricks much broader than the lattice bricks, and having
cut-away corners to form seats to receive the ends of the lattice bricks, substantially
as described.
2. A hot blast stove or like structure having lattice brick work, and having a
main wall or walls for sustaining said lattice brick work, said main wall or walls
being constructed with bricks much broader than the lattice bricks and having grooves
intermediate their ends to form vertical seats to receive the ends of the lattice bricks,
substantially as described.
3. A hot blast stove or like structure having lattice brick work, and a main wall or
walls for sustaining said lattice brick work, said main wall or walls being formed of
broad bricks, the corners and edges of which are cut away to form vertical seats to
receive the ends of the narrower lattice bricks and the abutting ends of the bricks
having substantially parallel faces, substantially as described.
4. A hot-blast stove or like structure having lattice brick-work, and a main wall or
walls for sustaining said lattice brick-work, said main wall or walls being formed of
broad bricks, the corners and edges of which are cut away-to form vertical seats to
receive the ends of the narrower lattice bricks, and the abutting ends of the bricks
having substantially parallel faces, substantially as described.
5. A hot-blast stove or like structure having lattice brick-work, and a main wall or
walls for sustaining said lattice brick-work, said main wall or walls being formed of
broad bricks, the corners and edges of which are cut away to form vertical seats to

page_text: receive the ends of the narrower lattice bricks, the bricks of said main wall or
walls being laid with their courses breaking joint, substantially as described.
6. A bot-blast stove or like structure having lattice brick-work, and a main
wall or walls for sustaining said lattice brick-work, said main wall or walls being
formed of broad bricks, the corners and edges of which are cut away to form vertical
seats to receive the ends of the narrower lattice bricks, the bricks of said main wall
or walls being laid with their courses breaking joint, and the alternate rows of
said bricks having their central cut-away spaces at the centre of the wall, substantially
as described.
Chinara Illini ITSA Ma 2-1 A D 1900
Witnesses:
JAMES HARVEY PEIRCE.
CHARLES HOWARD FOOTE.
GEORGE P. FISHER, Jr.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.