Improvements in and applicable to Furnaces for the Prevention of Smoke.
Year: 1894

page_text: Date of Application, 4th Dec., 1894
Complete Specification Left, 4th Sept.. 1895-Accepted, 19th Oct., 1895
PROVISIONAL SPECIFICATION.
Improvements in and applicable to Furnaces for the Prevention
of Smoke.
We RICHARD EVANS Engine Driver and THOMAS WILLIAM JONES, Pattern
Maker of Brymbo in the County of Denbigh North Wales, do hereby declare the
nature of this invention to be as follows:-
The object is to so construct or fit furnaces more especially steam generator
furnaces that improved combustion is obtained and production of smoke is obviated
or greatly decreased.
For the above purpose we fit or provide the furnace with one or more hollow
briuges having one or more inlets for air or air and steam, and, a series of outlets
for the said air or steam in combination with a depending baffle-plate behind the
bridge. A way or ways is or are provided for leading air or air and steam into
the bridge and one or more valves is or are provided for controlling the inlet and
outlet of the fluid to and from the bridge.
Under one modification, the hollow bridge has an opening which communicates
with the ashpit, such opening being controlled by a valve. The top of the said
bridge is formed with a series of vertical openings preferably obtained by building
in a number of refractory bars or blocks. The rear of the said bridge is pierced by
a number of horizontal radiating apertures. Behind the said bridge is a depending
baffle-plate pierced with openings at a lower level than that of the said horizontal
apertures, such openings lead to the combustion chamber.
Dated the 3rd day of December 1894.
J. JOHNSON,
Agent.
Improvements in and applicable to Furnaces for the Prevention
of Smoke.
We RICHARD EVANS, Engine Driver, and THOMAS WILLIAM JONES, Pattern
Maker of Brymbo in the County of Denbigh North Wales 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 :-
The object is to so construct or fit furnaces more especially steam generator
furnaces that improved combustion is obtained and production of smoke is obviated
or greatly decreased.
For the above purpose we fit or provide the furnace with one or more hollow
bridges having one or more inlets for air or air and steam, and a series of outlets
for the said air or steam in combination with a depending baffle plate behind the
bridge. A way or ways is or are provided for leading air or air and steam into
the bridge and one or more valves is or are provided for controlling the inlet and
outlet of the fluid to and from the bridge.

page_text: Under one modification, the hollow bridge has an opening which communicates
with the ashpit, such opening being controlled by a valve. The top of the said
bridge is formed with a series of vertical openings preferably obtained by building
in a number of refractory bars or blocks. The rear of the said bridge is pierced
by a number of horizontal radiating apertures. Behind the said bridge is a
depending baffle plate pierced with openings at a lower level than that of the said
horizontal apertures, such openings lead to the combustion chamber.
Under one modification, the hollow bridge has an opening when comi cates
with the ashpit, such opening being controlled by a valve. The top of the said
bridge is formed with a series of vertical openings preferably obtained by building
in a number of refractory bars or blocks. The rear of the said bridge is pierced
by a number of horizontal radiating apertures. Behind the said bridge is a
depending baffle plate pierced with openings at a lower level than that of the said
horizontal apertures, such openings lead to the combustion chamber.
DESCRIPTION OF THE DRAWINGS.
Figs. 1 and 2 are longitudinal vertical and horizontal sections through a steam
generator furnace provided with our improvements. a walls of furnace. b hollow
bridge. air inlet from ashpit d controlled by the valve e. f vertical openings in
the top of the bridge. horizontal apertures at the back of the bridge radiating
outwards. depending baffle plate behind the bridge pierced with openings i
at a lower level than that of the apertures g. j combustion chamber. k fire bars.
A pipe is sometimes used to admit steam into the hollow bridge. The said pipe is
connected to a generator and the passage of steam therethrough is controlled in
any usual way. The valve e may be either sliding as shown or it
may be hinged
or otherwise made. Two or more valves may be used and the bridge may be
divided into vertical transverse compartments.
Fig. 3 is a longitudinal vertical section of a furnace in which there are two.
bridges, one b with vertical openings f, and the other with horizontal openings g.
The bridge is shown fitted for allowing air to flow through the vertical openings
and the bridge b¹ for allowing steam to flow through the horizontal openings, or
steam may be admitted to the bridge b, and air to the bridge b', or air or steam and
air may be admitted to both.
Valves are used to regulate the flow of air or air and steam through the outlet
ways and g if found desirable. The baffle may have openings above the
horizontal openings of the bridge as well as below them.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
First. In a steam generator or like furnace, the combination of a hollow bridge
having vertical and horizontal openings and means for controlling the admission of
air or air and steam to the said hollow bridge, with a depending baffle plate behind
the said bridge having openings therethrough at a lower level than the level of the
bridge for the purpose set forth.
Second. In a steam generator or like furnace, hollow bridges having vertical
openings and horizontal relial apertures with air or air and steain admission valves
for the purpuse set forth.
Thir. In steam generator or like furnace a hollow bridge with vertical
openings, and a hollow bridge with horizontal apertures with or without a
depending baffle plate behind and with air or air and steain controlling valves for
the purpose set forth.
Fourth. In a steam generator or like furnace a hollow bridge with vertical and
horizontal openings and admission valves for air or air and steam with or without a
depending baffle plate for the purpose set forth.
Fifth. The improvement in and applicable to steam generator or like furnaces
substantially as herein set forth.
Dated the 3rd day of September 1895.
J. JOHNSON,
4 Clayton Square, Liverpool, Agent.