Improvements in Steam Boiler and other Furnaces.
Year: 1897

page_text: Date of Application. 23rd Jan.. 1897
Complete Specification Loft 23rd Oct 1807 Accented 4th Dec.
1807
Complete Specification Loft 23rd Oct 1807 Accented 4th Dec. 1897
PROVISIONAL SPECIFICATION.
Improvements in Steam Boiler and other Furnaces.
We ARTHUR ADAMS of No 1 Queen's Villas-Brierley Street-Nottingham-
Mechanic; and HENRY WALKER HILL of 2 Church Gate-Nottingham-Con-
sulting Engineer do hereby declare the nature of this invention to be as follows:-
Our invention relates to an improved arrangement or construction of steam
boiler and other furnaces for use with a forced or induced draught; and the
object of our invention is to construct a furnace of few and simple parts, that
can be readily fitted to or withdrawn from a boiler or other furnace,, and with
which a forced or induced draught is used. The lower portion of the furnace tube
or flue with this invention is left clear, so that Ashes, Cinders and the like may
readily be removed therefrom.
For this purpose we form the fire-bars of the usual and suitable form or section,
but preferably having two or more cast together, and having the requisite air
spaces between each bar. At suitable intervals, we prefer to have some of the
bars shallower than the others; and under these shallow bars we have one or
more small steam pipes running the length of the furnace, each pipe
Leing preferably closed at the bridge end, and perforated along its
length with small holes in suitable positions, for the emission of small
jets of steam and air or steam alone-between the bars, and through
the burning coal or fire thereon. These small steam pipes are connected at the
front end of the boiler with one or more steam supply pipes connected to the
steam space of the boiler; and one or more of all these pipes are fitted with a
valve or tap for regulating the supply of steam thereto. In some cases we fit
the front end of the small steam pipes with a funnel-shaped mouth-piece-ter-
minating at. a suitable distance from the steam supply pipe, and
connected thereto. Nozzles are fixed-or small holes formed in the steam supply
pipe opposite each mouth-piece, into which jets of steam rush, and induce with
each jet a current of air into the mouthpiece, thence along the small steam pipes,
through the small holes in same, and thence through the burning coal or fire on
the bars.
not
We do not limit the application of our invention to any type of furnace,
but modify its parts and the arrangement of same to suit particular require-
ments, without departing from the essential features of our invention.
Dated this 22nd day of January 1897.
H. WALKER HILL,
2 Church Gate-Nottingham Agent for the applicants..

page_text: Improvements in Steam Boiler and other Furnaces.
We ARTHUR ADAMS of No 1 Queen's Villas, Brierley Street, Nottingham-
Mechanic; and HENRY WALKER HILL of No 2 Church Gate, Nottingham―Con-
sulting 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:―
Our invention relates to an improved arrangement or construction of steam.
boiler and other furnaces for use with a forced or induced draught; and the
object of our invention is to construct a furnace of few and simple parts that
can be readily fitted to or withdrawn from a boiler or other furnace, and with
which a forced or induced draught is used. The lower portion of the furnace tube
or flue with this invention is left clear, so that ashes, cinders and the like may
readily be removed therefrom.
For this purpose we form the fire-bars of the usual and suitable form or section,
but preferably having two or more cast together, and having the requisite air
spaces between each bar. At suitable intervals, we prefer to have some of the
bars shallower than the others; and under these shallow bars we have one or
more small steam pipes running the length of the furnace, each pipe
being preferably closed at the bridge end, and perforated along its
length with small holes in suitable positions, for the emission of small
jets of steam and air, or steam alone-between the bars, and through
the burning coal or fire thereon. These small steam pipes are connected at the.
front end of the boiler with one or more steam supply pipes connected to the
steam space of the boiler; and one or more of all these pipes are fitted with a
valve or tap for regulating the supply of steam thereto. In some cases we fit
the front end of the small steam pipes with a funnel shaped mouth-piece-ter-
minating at. a suitable distance from the steam supply pipe, and
connected thereto. Nozzles are fixed or small holes formed-in the steam supply.
pipe opposite each mouth-piece, into which jets of steam -rush, and induce with
cach jet a current of air into the mouthpiece, thence along the small steam pipes,
through the small holes in same, and thence through the burning coal or fire on
the bars.
not
We do not limit the application of our invention to any particular type of furnace,
but modify its parts, and the arrangement of same to suit particular require-
ments, without departing from the essential features of our invention.
In order that our invention may be fully understood, and more readily carried
out and into effect, we have appended hereunto one sheet of drawings whereon:
Figure 1 represents an end elevation of a steam boiler fitted with our invention.
Figure 2 represents a longitudinal sectional elevation of the same boiler so
fitted.
Figure 3 represents a transverse sectional elevation of a furnace tube or flue
fitted with our invention.
Figure 4 represents a transverse sectional plan of the same flue so fitted.
In these figures A is the steam boiler, having one or more furnace flues or
tubes B, fitted with the fire-bars F,-preferably of the special form or section
shown in Figs 3 and 4,-having two or more cast together, with the centre bar F
of each group made shallower than the rest; so that one or more small steam
pipes C may be placed under same, running the length of the furnace. Each
of the pipes are preferably closed at the bridge end D, and are perforated along
their length with small holes E. E at suitable distances apart, in the most suitable

page_text: positions in same; for the emission of small jets of steam or steam and air there-
from in such a manner that currents of air are induced with the steam jets and
pass through the air spaces G.G between the bars, and then through the burning
fuel or fire thereon. The steam pipes C.C are connected at the front end of the
boiler A with one or more steam supply pipes H connected to the steam space I
of the boiler A; the pipe or pipes H being fitted with a valve or tap K for
regulating the supply of steam to the small pipes C.C.
In some cases, instead of fixing the steam pipes C.C direct to the supply pipe H,
we fit the front end of each pipe C with a funnel shaped mouth-piece L-Fig 4
fixed at a suitable distance from the pipe H, which is fitted with a nozzle N, er
small jet hole, opposite each mouth-piece L, into which small jets of steam rush
and induce with them a current of air into each mouth-piece, thence along the
steam pipes C.C, then through the small holes E.E in same, and then through
the burning fuel or fire on the bars F. -
The small arrows in the figures represent the steam jets and currents of
induced air passing through the bars F.F.
The damper M at the bridge P, is in some cases fitted. to our invention, and is
adjusted by the rod O so as to admit any desired amount of air to pass through
the hollow bridge P to mix with and consume any smoke passing over it.
The bearers R.R carrying the bars F.F, have racks S.S formed at one or both
ends of same, fitted with an adjustable plate T, (also formed with a rack on one
side of same) top and bottom at one or both ends of each bearer; in such a
manner that the bearers can be made of any desired length to suit any diameter
of flue without any chipping or fitting of the bearers being necessary.
The bolts V pass through each plate T, and securely grip the bearer. I between
same, on screwing up the nut on the end of this bolt.
Having now particularly described and ascertained the nature of our said in-
vention, and in what manner the same is to be performed, we declare that what we
claim is:-
1st. In steam boiler and other furnaces the method of supplying one or more
currents of induced air through the spaces between fire-bars, and into the fire
thereon, by means of perforated steam pipes C.C running along underneath the
fire-bars in combination with steam jets issuing from the perforations E.E in
the pipes C.C connected by pipe H with the steam space of the boiler, for the
purposes mentioned and substantially as hereinbefore described, and as illustrated
in the drawings herewith.
2nd. In steam boiler and other furnaces forming the fire-bars in groups of two
or more bars cast together with the centre bar or bars shallower than the others,
so as to admit one or more perforated steam pipes E.E to rest on the same
bearers R as the fire-bars, and in combination therewith; all for the purposes.
mentioned and substantially as set forth and shown on the drawings herewith.
3rd. In steam boiler and other furnaces forming one or more ends of the bearers R
with racks S and notched adjustable end plates T in combination with the special
form of fire-bars F and perforated steam pipes C substantially as hereinbefore
set forth and shown in the drawings herewith.
4th. In steam boiler and other furnaces the arrangement and combination of
parts for the purposes mentioned and substantially as hereinbefore described and
shown in the drawings herewith.
D
13
00 1
Otahan 1907
H. WALKER HILL,
2. Church Gate, Nottingham. (Agent for the Applicants).