Improvements in or applicable to Steam Boiler and other Furnaces for Consuming Smoke.
Year: 1890

page_text: Date of Application, 9th Sept., 1890
Complete Specification Left, Eth June, 1891-Accepted, 11th July, 1891
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Steam Boiler and other Furnaces
for Consuming Smoke.
We, ROBERT BYROM, Bayley Street, Stalybridge, in the County of Lancaster,
and THOMAS BAYLEY of Kelsall House, Stalybridge aforesaid, Cotton Spinner
and Manufacturer do hereby declare the nature of our said invention, to be as
follows:-
Our invention relates to the construction of the fire bridge of the furnace, and
consists in making the same of fire clay in the form of a box, the bottom of which
has oue or more holes to admit air through corresponding holes in an iron beam
which extends across the furnace and carries the said fire clay box forming
the hollow fire bridge, which is kept in position endways on the iron beam by
separate blocks of fire clay moulded to the required shape to fit the sides
of the fluc.
There are one or more ledges in the fire clay box to support a lid, or a lid and
horizontal partition which may be formed of fire clay in one or more pieces and
this lid, and the partition when used, has numerous small holes through it which
are small on the upper side of the lid and widen out on the underside to allow ash
or dirt to freely pass through and prevent the air holes from being stopped up.
The hollow box fire bridge is heated by the heat of the fuel and the air passing
into it and out through the small perforations in the lid is also heated and meets
the unconsumed gases as they pass the bridge and burns them, and this is effected
without subjecting the boiler or flue to the action of cold currents of air which
would lower the temperature of the boiler or flue.
There is or may be a valve or damper arrangement to regulate or turn on and
off the supply of air to the hollow fire brick box bridge.
Did this Wichth ring of Santambo 1800
PETER J. LIVSEY,
Agent
COMPLETE SPECIFICATION.
Improvements in or applicable to Steam Boiler and other Furnaces
for Consuming Smoke.
We, ROBERT BYROM, Bayley Street, Stalybridge, in the County of Lancaster,
and THOMAS BAYLEY of Kelsall House, Stalybridge aforesaid, Cotton Spinner and
Manufacturer, 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 :-
Our invention relates to the construction of the fire bridge of the furnace, and
consists in making the same of fire clay, in the form of a box, the bottom of which
has one or more holes to admit air through corresponding holes in an iron beam
which extends across the furnace and carries the said fire clay box forming
the hollow fire bridge, which is kept in position endways on the iron beam by
separate blocks of fire clay moulded to the required shape to fit the sides of
the flue.
There are one or more ledges in the fire clay box to support a lid, which may be
formed of fire clay in one or more pieces, and this lid has numerous small holes
through it, which are small on the upper side of the lid and widen out on the under-
side to allow ash or dirt to freely pass through and prevent the air holes from being
stopped up.

page_text: The hollow box fire bridge is heated by the heat of the fuel, and the air passing
into it and out through the small perforations in the lid, is also heated, and meets
the consumed gases as they pass the bridge and burns them, and this is effected
without subjecting the boiler or flue to the action of cold currents of air which
would lower the temperature of the boiler or flue,
There is or may be a valve or damper arrangement to regulate or turn on and
off the supply of air to the hollow fire clay box bridge.
Fig. 1 is a front elevation of the fire bridge and valve mechanism within a
cylindrical flue.
Fig. 2 is an elevation and section in the line A-A Fig. 1, the plane of the section
being in the direction of the lengthway of the furnace: this view also showing the
connections for actuating the air valve.
Fig. 3 is a top plan view of the fire bridge.
a, represents a part of the wall passing across the furnace, which would form the
ordinary fire bridge: b, a plate or bean also passing aeross the furnace.
The upper surfaces of the furnace bars are upon a level with the upper surface of
the plate
Fig. 2 represents a part of one of the fire or grate bars supported at the end
near the bridge upon a bar el, extending across the furnace.
The fire or grate bars are of ordinary arrangement and construction.
d, represents the hollow fire clay box, the cavity in it extends from end to
end, except that there is a web d, at each end to give strength, which wels do not
extend to the under side of the lid.
It will be seen from Fig. 2 that the fire clay box rests partly upon the wall a, and
partly on the plate b.
At the bottom of the fire box there are a mumber of holes 2, (four are shown in
Fig. 3) and these holes in the fire clay box come opposite corresponding holes in
the plate h, so that air can pass from the underside of the plate 6, into the cavity
of the fire clay box d.
The fire clay box is kept in position by blocks d, of fire clay placed between
the ends of the box and the sides of the furnace see Fig. 1.
The upper inner edges of the fire clay box d, are made with ledges on the two
opposite sides, and the lid or lids d', rests at one side on one ledge and upon the
upper edge of the hos d, on the other side. The lid d. may be formed in one
piece, but by preference it is made in say four pieces placed edge to edge two of
which are shown in Fig. 3, and the lid or lids , is perforated with a number of
small holes d, which widen ont from the upper to the lower sides as shown. The
lid or lids, may be made of fire clay or of cast iron as preferred, if made of iron
there is or may be an adjusting set screw d, upon the under side of each section of
the lid the point of which can be adjusted to come within and against the side of
the ledge upon the fire clay box d, (as shown best in Fig. 2).
This arrangement prevents the lids d, from moving forward.
There is a valve box formed by a back plate e, having two end plates cast upon
it, and a front plate e', secured to the casting e, by bolts.
In this iron box a throttle valve, is placed, the axis or spindle ¹, of which
valvo, comes into or through holes or bearings in the ends of the box e
The valve box e, is secured to the underside of the plate 6, opposite the holes ²,
in it for air, and when the valve, is shut (as shown in dotted line in Fig. 2) nir
is prevented from passing to the hollow fire clay bridge, but when the valve, is
open, air can pass freely and is heated in passing through the fire clay box before it
meets the unconsumed gases.
On one end of the valve spindle f', there is a tumbler lever weight, that will
hold the valve in either the open or closed position. There is also an arm, upon
the spindle of the valve to which one end of a rod 9 is jointed.
This rod g, (see Fig. 2) is or may be made in two parts which are connected by a
coupling, so that the length of the rod may be adjusted.
The front end of the rod y, which comes to the furance door is slotted (see slot y³,

page_text: Fig. 3) and through this slot a pin g³, passes which pin is secured in the end of an
arm g, which is attached to a descending continuation from the hinge joint go,
of the furnace door g, which oscillates with the door partly shown in Fig. 2.
When the furnace door g, and the valve f, is shut the pin g³, is at the outer end
of the slot g³, in the rod g, (the outer end of which forms a handle (97) for moving
the rod, see Figs. 2 and 3) and when the furnace door is opened the valve /, is
opened at the same time.
The valve, may be shut at any time after the furnace door is shut, but it is left
open for a time after supplying fuel or stirring the fuel in the furnace to supply
air to the hollow fire clay box d, for burning the unconsumed gases, and is then
shut.
The rod, may be moved to shut the valve f, after a certain time by automatic
means, but as the fireman as a rule, has nothing to do but to attend to the furnace,
he can readily shut the valve or valves as he passes, especially when attending to
several furnaces side by side.
We wish it to be understood that we are aware that it is not new to admit air
into and through a hollow fire bridge, and that valves have been used for regulating
the passage of air to hollow fire bridges.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed we declare that what
we claim is.
1. The construction of fire bridges of fire clay, having a perforated lid or lids of
fire clay or of iron arranged as and for the purpose herein before described and
illustrated by the drawings.
2. The combination of an air valve and mechanism for actuating it with a
hollow fire bridge made of fire clay, and having a lid or lids of fire clay or metal
arranged as and for the purpose hereinbefore described and illustrated by the
drawings.
Dated this Sirth dew of Lun 1801
PETER J. LIVSEY,
Agent.