An Improved "Continuous" Kiln to Economise Waste Heat by Means of "Assisted Draught."
Year: 1897

page_text: Date of Application, 17th Mar.,
1897
Complete Specification Left, 17th Dec., 1897-Accepted, 17th Mar., 1898
An Improved "Continuous" Kiln to Economise Waste Heat by
Means of "Assisted Draught."
ALLAN TRACY, Engineer, Merton House, Retford, Notts, do hereby declare the
nature of this invention to be as follows:-
An improved "continuous" kiln consisting of a number of chambers, either
arranged as one with partitions, or as a number of partly detached kilns each con-
nected with the next by means of under or over flues The draught of the flues to
be controlled by means of one or more fans and not to depend upon a "pull" from
the chimney.
The chimney shall be just high enough to carry away the gases to keep above
surrounding sheds.
The heat from each kiln or chamber shall be carried by means of the draught
caused by the fan or fans, through either the next kiln or chamber or through
underground flues or suitable pipes or tunnels to "drying sheds" for either heating
floors or supplying sheds with hot air.
The waste heat can be made use of as either hot air or as hot gases having pro-
ducts of combustion, by forcing the air through the hot bricks that are finished or
by forcing the air through the fires or combination of both.
The "steaming" can be accomplished by having openings only in crown of
kiln. These openings can also be used to give an updraught to fires. The fires
are controlled by air from fans to either bottom, sides or top. Air is heated before
coming into fires, by passing through bricks burnt and this plan also aids in cooling
the finished bricks.
All air passages are regulated by sliding or other dampers to allow as much to pass
as required at the different stages.
..
An Improved "Continuous "2
Kiln to Economise Waste Heat by
Means of "Assisted Draught."
ALLAN TRACY, Mechanical Engineer, Merton House, Retford, Notts, do hereby
declare the nature of this invention and in what manner the same is to he per-
formed, to be particularly described and ascertained in and by the following
statement;
-
An improved continuous" kiln consisting of a number of chambers, either
arranged as one, with partitions; or as a number of partly detached kilns, each con-
nected with the next by means of under or over flues.

page_text: The draught of the flues to be controlled by means of one or more fans and not
to depend upon the "pull" from the chimney.
The chimney shall be just high enough to carry away, the gases to keep above
surrounding sheds or buildings.
The heat from each kiln or chamber shall be carried by means of the draught
caused by the fan or fans through either the next kiln or chamber or through under-
ground flues or suitable pipes or tunnels to the drying sheds for either heating floors
or for supplying sheds with hot air.
The waste heat can be made use, either as hot air or as hot gases, having products
of combustion, by forcing the air through the hot bricks that are finished or by
forcing the air through the fires or a combination of both.
"
The steaming" can be accomplished by having openings only on the crown of
the kiln.
These openings can also be used to give an updraught to the fires. The fires
are controlled by air from fans to either bottom, sides or top. Air is heated before
coming into fires by passing through bricks already burnt and hot and this plan
also aids the cooling of the finished bricks.
All the air passages are regulated by sliding dampers or other form of dampers
to allow as much to pass at different stages as may be found necessary.
Air to the fires can also be brought in suitable passages over top of fires to heat
same still more before it enters fires.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what I
claim is
1. In a kiln or furnace, the use of a fan or fans for the purpose of forcing air
through one kiln, that is full of hot bricks, into the next to utilise this heat for
"steaming" and afterwards use the same system of pipes or flues to force the
fires, carrying the whole of the gases through flues to drying sheds.
2. In a kiln or furnace the use of a fan or fans for the purpose of forcing the air
required to be heated through spaces round the outer surfaces of the flues so that
the heat usually wasted in the chimney is utilised to warm the air, while a portion
of air supplied by the fan is diverted to the fires and forces the draught as required.
December 16th 1897.