Improvements in Apparatus or Furnaces for Burning Refuse Matter or other Material.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Apparatus or Furnaces for Burning Refuse Matter
or other Material.
I, JOHN EDWARD SLACK, of Chester Road, Old Trafford, Manchester, in the
County of Lancaster, Mechanical Engineer, do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in furnaces or apparatus known as
destructors for destroying by heat or combustion town refuse or other material.
It is designed to provide a simple and effective destructor in which a high
temperature can be attained, and in which the cooler gases or products of com-
bustion coming off from the fresh charge are caused to pass across a second
cell or chamber, and are there completely consumed:
It comprises a double cell destructor or furnace, one cell or chamber being
separated from the other by a wall or bridge with a contracted orifice, connect-
ing the two cells together.
•
Both cells are provided with a flue or outlet preferably at the side furthest
from the other, these flues converging into a single flue, and each being pro-
vided with a damper by which it may be closed, so that the products of com-
bustion from one cell pass across the fire in the other cell, and all the products
of combustion and gases generated in the two cells, pass away through one flue.
By opening and closing the dampers this can be reversed, and the products
pass in the reverse direction. By this arrangement the products of combustion
from the cell last charged are caused to pass over the earlier charged cell
which is much hotter and thereby ensure more complete combustion, sufficient
air being admitted to promote secondary combustion.
The bridge between the two cells may be fitted with a damper to close or
regulate the aperture or passage leading from one to the other.
Forced draught may be applied to one or both cells, also charging doors and
clinking doors, so that each cell can be clinkered and charged independently of
the other.
A steam boiler of any suitable type may be applied to utilize the heat passing
away from the flues.
Dated this 28th day of October 1897.

page_text: Improvements in Apparatus or Furnaces for Burning Refuse Matter
or other Material.
I, JOHN EDWARD SLACK, of Chester Road, Old Trafford, Manchester, in the
County of Lancaster, Mechanical 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 relates to improvements in furnaces or apparatus known as
destructors for destroying by heat or combustion town refuse or other material.
It is designed to provide a simple and effective destructor in which a high
temperature can be attained, and in which the cooler gases or products of com-
bustion coming off from the fresh charge are caused to pass across a second
cell or chamber and are there completely consumed, the gases passing direct
from one cell to the other without the construction of an intermediary flue.
It will be fully described with reference to the accompanying drawings.
Fig. 1. Longitudinal section.
Fig. 2. Transverse section on line - Fig. 1.
Fig. 3. Sectional plan on line y-y Fig. 2.
The invention comprises a double cell destructor or furnace with the two cells
or chambers A and B, one cell or chamber A being separated from the other
by a wall or bridge C leaving a contracted orifice or space D above, between it
and the crown of the furnace E by which the cells or chambers A and B are
connected.
The cell or chamber A is provided with a flue or outlet F and the cell or
chamber B with a similar flue or outlet F¹ placed preferably as far apart as con-
venient and converging into a single combustion chamber or flue G through
which the products pass to the flue H and thence to the chimney. The outlets
or flues F F are fitted with dampers f f¹ by which the draught can be directed
either to one side or the other. Thus when the left hand damper f is open the
heated products of combustion from the right hand cell B pass over the bridge C
and across the fire in the other cell. Thus when the cell A is at its hottest and the
cell B has recently been charged any combustible particles passing from
the cell B are completely consumed in the hotter cell A and vice versa. When
the charge in the cell A is consumed the draught is reversed by closing the
damper and opening the damper f¹ and the products of combustion from the
fresh charge in the cell A pass over the hotter cell B.
The combustion chamber G over the cells heats the arch K of the furnace and
thus maintains it at high temperature and nearly_incandescent state.
The furnace is fitted with one charging door only L common to the two cells,
the door being placed opposite to the end of the bridge C the refuse being
raked into whichever side is required, the space between the door and the bridge
being filled with the material. The refuse is thus not only heated and dried by
radiation (as in the existing form of destructor) but also by the direct contact
of heated gases passing over it before it is placed upon the grate or hearth of
the furnace.
i
Clinking doors M M¹ are provided for each cell so that one 'cell can be
clinkered whilst the other is in operation. Two charging doors may also be
provided if desired.
The bridge between the two cells may be fitted with a damper to close or regu-
late the aperture or passage leading from one to the other.
Forced draught may be applied to one or both cells.

page_text: A steam boiler of tubular or any suitable type may be placed in the flue or
chamber H to utilize the heat as it passes through the flues from the furnace.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
1. A furnace or destructor for burning refuse matter or other material con-
structed with two cells or chambers placed side by side divided by a bridge
with a passage over by which the products of combustion pass from one cell to
the other, the flues being provided with dampers to change the direction of the
draught substantially as and for the purpose described.
2. A furnace or destructor for burning refuse matter or other material con-
structed and arranged substantially as described and shown with reference to
the drawings.
Tuno 1898
WM. P. THOMPSON & Co.,
Manchester, Liverpool & London, Patent Agents.