Improvements in and connected with Fire- or Grate-bar Systems.
Year: 1898

page_text: Date of Application, 29th July, 1898-Accepted, 8th Oct., 1898
COMPLETE SPECIFICATION.
Improvements in and connected with Fire- or Grate-bar Systems.
I, HERMANN WILMS, of 8, Kacsen Strasse, Coeln, in the Province of the Rhine,
German Empire, 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;-
This invention relates to an improved and practical fire-bar or grate-bar system,
in which two series of fire-bars, located one behind the other (and which thus
form the grate), are connected with a compressed air-inlet chamber or chest the
said air-inlet forming at the same time the fire-bar carrier or support, in whic'.
system the compressed air is caused to traverse or pass through two rows of
nozzles and subsequently to be distributed over the fire-bars.
In order to make my invention clear, I refer to the accompanying drawing,
in which:
Figure 1 shows one method of carrying my invention into effect, whilst
Figures 2 & 3 are modifications.
The general arrangement of my improved system is clear from the drawing, so
that in general I will confine myself to a description of the parts which form
features of my invention.
The
In the drawing a (Figures 1-3) is the fire-bar carrier or support, provided
with two rows of nozzles a¹ a² and with an air-inlet z, which may have any suit-
able form. The fire-bars rest directly upon the said nozzles a¹ and a
compressed air, introduced into the said inlet 2, in order as hereinbefore indicated
to be distributed over the fire-bars for the purpose of increasing the combustion,
can of course be produced in any optional manner.
After the compressed air has passed through the air-inlet, and through the
before-said air-inlet-chamber, the air traverses, as shown in Figures 1 & 2, an
upper and a lower channel, and in Figure 3 a single channel with the difference
that in Figure 1 the air passes first into the top-channel, cools the fire-surface of
the bar, becomes heated in its passage along said bar and passes through open-
ings of the under channel into the burning fuel, whereas, as shown by the arrow
in Figure 2, the passage of the air in this construction is the reverse to that
described in Figure 1, the air passing into the fuel in this construction from the
upper channel. It is apparent, that hereby the above mentioned object will be
attained, the increasing or accelerating of the combustion to a very large
degree, and furthermore, in consequence of the employment of compressed air
it is possible to obtain a very small, free fire-surface of the bars, that is to say,
the distance between the bars need only be very slight or narrow in consequence
of which another especial advantage of my system is attained, viz. that very small
coal even dust-coal, small coke, coke-sweepings and the like can be employed in
a grate provided with bars of this description.
Figures 2 & 3 show modifications of my system, for instance Figure 2, as
herein before indicated, being provided with openings or apertures in the upper

page_text: channel for the distribution of the compressed air into the fire, whereas in
Figure 3, as also hereinbefore indicated, I employ a single channel only.
From these modifications it is clear, that I may even further slightly modify
the construction without departing from the principle of my invention.
Having now particularly described and ascertained the nature of this
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1. In an improved system for fire- or grate-bars, characterised by the em-
ployment of a hollow fire-bar carrier common to two series of firebars located
one behind the other, said carrier forming an inlet for compressed air, from
which air-inlet the air is caused to pass into two rows of nozzles a¹² through
which the same reaches and traverses an upper and wer channel, the latter of
which is provided with openings or apertures through which the air becomes.
distributed over the said fire-bars, substantially as described.
2. A modification of the improved fire or grate-bar system, as described in
Claim and shown in Figure 2, characterised by the employment of a hollow
fire-bar carrier common to both series of fire-bars located one behind the other,
said carrier forming, an inlet for the compressed air from which
air-inlet the air 19 caused to pass into two rows of nozzles a¹ a³,
through which the same reaches and traverses an upper and lower
channel, the upper channel of which is provided with openings or apertures
through which the air becomes distributed over the said fire-bar, substantially as
described.
3. A modification of the improved fire- or grate-bar system, as described in
Claim 1 and shown in Figure 3, characterised by the employment of a hollow
fire-bar carrier, common to both series of fire-bars located one behind the other,
said carrier forming an inlet for the compressed air, from which air-inlet the
air is caused to pass into two rows of nozzles aa through which the same reaches
and traverses a single channel and subsequently becomes distributed over the
said fire-bars by apertures arranged in said single channel, substantially as
described.
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GEO. H. RAYNER,
37, Chancery Lane, London, W.C., Agent for the Applicant.