Steam Boiler and other Furnaces.
Year: 1887

page_text: Date of Application, 26th May, 1887
Complete Left, 15th Aug., 1887.
Complete Accepted, 23rd Sept., 1887.
Steam Boiler and other Furnaces.
I ROBERT ROBSON Low Fold Lower Wortley No. 101 near Leeds in the County of
York Boiler Maker do hereby declare the nature of this invention to be as follows:-
This invention relates to the construction of fire-bars and has for its object an
improved method of introducing and distributing currents of air amongst the gases
and other combustible material in steam boiler and other furnaces in order to produce
a brighter fire and a quicker generation of steam.
.
The said invention consists of a fire-bar made in two parts. Each half is recessed
to a suitable depth along the greater part of its length and when joined together forms
a hollow fire-bar open at the top and closed at the bottom and ends.
At one end of
the said fire-bar a hole is made which communicates with the interior of the bar and
within this hole is inserted a pipe which communicates with a steam cock connected
to the boiler at a convenient point above the water line, so as to enable a jet of steam
to be admitted into the interior of the fire-bar and through the opening at the top into
the fire and cause a draught or current of air to pass through the fire and mix with
the gases and other combustible material in the furnace. By this construction of
fire-bar and method of introducing air into the furnace I produce a brighter fire, a
quicker generation of steam, and at the same time prevent a quantity of useful and
combustible gas passing away in the form of smoke.
It may be necessary in order to prevent ashes from getting into the interior of the
fire-bar to shield or protect the opening by means of a suitable piece of metal T or
otherwise shaped inserted into the opening so as to leave sufficient space for the steam
to blow through and at the same time prevent it being stopped up.
Dated this 25th day of June 1887.
WAUD & JOHNSON,
Agents for the Applicant.

page_text: Improvements in the Construction of Fire-bars Appertaining to
Steam Boiler and other Furnaces.
I ROBERT ROBSON Low Fold Lower Wortley No. 101 near Leeds in the county of
York Boiler maker, 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 the construction of fire-bars and has for its object an 5
improved method of introducing and distributing currents of air amongst the gases
and other combustible material in steam boiler and other furnaces, in order to produce
a brighter fire and a quicker generation of steam.
In order that the said invention may be better understood, I annex a lettered
drawing shewing three views of the fire-bar as applied to ordinary boilers, and also 1
three views of a detail drawing of the said fire-bar.
(Fig. 1) Is a sectional side elevation through the centre of the boiler.
(Fig. 2) A front elevation of the boiler.
(Fig. 3) A sectional plan on line A. B.
(Fig. 4) A side elevation of the fire-bar.
(Fig. 5) A section on line CD.
(Fig. 6) A plan of the same.
The said invention consists of a fire-bar A (Figs. 4, 5 and 6) made in one or two
parts E and F joined or fastened together by suitable bolts or rivets. Each half is
recessed to a suitable depth along the greater part of its length and when joined 2
together forms a hollow fire-bar open at the top D. At one or both ends of the said
fire-bar a hole B is made to communicate with the interior C.
The arrangement of the fire-bars in the boiler and method of effecting the object of
my invention is illustrated by (Figs. 1, 2 and 3), M being an ordinary boiler of the
Cornish type, having a flue R, the said flue containing the fire-bars resting on ordinary
dead-plates or bridges. The front set or (if required) all the fire-bars forming the
grate are in connection with the jet pipes G, the said jet pipes being connected to a
main pipe H which extends along the front of the furnace and communicates with the
boiler through the cock or valve O, placed in a suitable position on the boiler so as to
enable a jet of steam to be admitted through the pipes H and G into the interior C of a
the fire-bar, and through the opening D into the fire, thereby causing a draught or
current of air to pass between each fire-bar and mix with the gases and other combus
tible material in the furnace.
By this construction of fire-bar and method of introducing air into the furnace, I
produce a brighter fire, a quicker generation of steam, and at the same time keep the
fire-bars cool, and also prevent a quantity of useful and combustible gas passing away
in the form of smoke.

page_text: It may be necessary in order to prevent ashes or dirt from getting into the
interior C, to have the opening D at one or both sides of the fire-bar instead of
having it in the middle, or to shield or protect the opening by means of a suitable
piece of metal T or otherwise shaped inserted into the opening, so as to leave
sufficient space for the steam to blow through and at the same time prevent it being
stopped up.
Having hereinbefore described a convenient method of constructing and applying
my invention to steam boiler and other furnaces, I wish here to point out that I do
not limit myself to any one particular construction of fire bar, or to any one particular
arrangement or method of applying the same to steam boiler and other furnaces, nor
do I limit myself to the use of steam as the only means of causing a draught to pass
through the fire as any other suitable substitute such as air woull effect the same,
providing it was sufficiently compressed as to supply the required pressure.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I declare that what I claim is
-
. (First) The construction of a hollow fire bar open at the top or sides and inade in
one or more parts joined or fastened together by means of suitable bolts or rivets.
The said fire-bar having one or more holes communicating with the interior, so as to
enable a jet of steam or other suitable substitute to be forced through the fire-bar and
through the opening at the top or sides into the fire, and thereby cause a draught or
current of air to pass between the fire-bars and through the fire as herein before
described.
(Second) A furnace having some or all the fire-bars hollow, and so arranged that
some or all the said fire-bars are in communication with a service of steam jets carried
from a pipe connected to the boiler, so that one or more jets of steam can be forced or
made to pass through some or all the fire-bars at once.