Fire-bars.
Year: 1889

page_text: Date of Application, 26th Oct., 1889
Complete Specification Left, 25th July, 1890-Accepted, 30th Aug.. 1890
PROVISIONAL SPECIFICATION.
Fire-bars.
I, ASPLAN BELDAM, of 77, Gracechurch Street, in the City of London, Engineer,
do hereby declare the nature of my said invention to be as follows:-
Fire bars according to this invention are constructed with inclined bearing edges
or surfaces, that is, the top edge or surface of the bar is inclined from the outside
edges to the centre in the form of an inverted V, or an analogous shape, the lower
part being a web, which in most cases would be tapered downwards, and fish-bellied
lengthwise; the bar is thus not reversible.
In use, the fuel will rest upon the sloping sides of the bars; and when a set are
employed in the ordinary or any known way the bearing surface or edges of the bars,
present an angular channelled appearance.
The bars may be made of any suitable metal.
Dated this 25th day of October 1889.
CHEESBROUGH & ROYSTON,
Applicant's Agents.
COMPLETE SPECIFICATION.
Fire-bars.
I, ASPLAN BELDAM, of 77, Gracechurch Street, in the City of London, 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:
Fire-bars according to this invention are constructed with inclined bearing edges
or surfaces, that is, the top edge or surface of the bar is inclined from the outside
edges to the centre in the form of an inverted V, or an analogous shape, the
lower part being a web, which in most cases would be tapered downwards, and
fish-bellied lengthwise; the bar is thus not reversible. In use, the fuel will rest
upon the sloping sides of the bars; and when a set are employed in the ordinary
or knownway the bearing surface or edges of the bars, present an angular channelled
appearance.
The bars may be of any suitable metal.
In the drawings which serve to illustrate my invention I shew several bars con-
structed according to my invention.
Referring to the drawings, a designates the two angular upper sides of the bars
upon which the fuel rests, and bis the web or belly of the bar which gives the
requisite strength to the bar. This web or belly it will be seen is tapered towards its
lower edge as an ordinary cast iron bar.
In Figure 1 I shew two bars according to the invention placed together as they
would be in an ordinary grate.
In Figure 2 a bar, having angular upper sides, made hollow, an aperture being
provided through it from end to end; and Figure 3 shews a barwith a simple circular
hole through it.
Figures 4, 5 and 6 shew bars of the same form and construction as that illustrated
in Figure 2 but provided with holes d in different parts through which the air, which
enters the bar from one or both ends, flows. This air which of course becomes
heated in passing through the bars) passes up through the fuel on the bars.
holes d may be circular, oblong, or of any suitable shape.
The
In Figures 7 and 8 I shew two bars according to this invention in longitudinal
elevation, illustrating the air outlet holes or apertures d.

page_text: When using the hollow bars, the air which passes through them from the front to
the back end would, by preference, be used at the back end or bridge of the furnace,
as the case may be, to combine with the gases given off from the fuel and assist in
effecting complete combustion, the heat imparted to it in passing through the bar
being instrumental in this object and effect.
It will be plain that these bars are applicable to all or any sorts of furnaces,
such as steam generator furnaces, and all fire grates; and that they can be made
in single, double, or multiple form as required and to any desired dimensions.
The effect of the use of bars of the kind herein described is, that the air, in passing
up into the fuel thereon, follows the surface of the angular sides a, and meets at the
apex or angle at the top, and so prevents the coal from clinkering and adhering
to the surface on which it rests, which is not the case with ordinary bars.
bar is therefore to a certain extent, what may be termed an anti-fouling or "anti-
clinkering
39
one.
The
The result of the effect produced by the use of bars constructed according to this
invention is that they are more durable than ordinary bars, and the fuel burns more
freely upon them, and besides this, complete combustion of the fuel is furthered,aud
little slicing or cleaning of the grate is required.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. The herein described fire-bar, that is to say, a fire-har having inclined bearing
surfaces a, and a web b.
2. The fire-bars constructed, or of the form, substantially as set forthwith reference
to Figures 2 and 3; and Figures 4, 5, 6, 7, and 8, of the drawings.
D
1 11 101 .... of T₁l. 1000
CHEESBROUGH & ROYSTON,
15, Water Street, Liverpool, Applicant's Patent Agents.