Improvements in Steam Boiler Furnaces.
Year: 1892

page_text: Date of Application, 20th Oct., 1892
Complete Specification Left, 20th July, 1893-Accepted, 20th Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in Steam Boiler Furnaces.
We, WILLIAM BEESLEY of Piercefield Road, Freshfield, Commission Agent
and ALFRED VENTOM WRIGHT of Fromby Engineer, both near Liverpool, in
the County of Lancaster do hereby declare the nature of this invention to be as
follows:-
This invention relates to steam boiler furnaces, and the objects of this invention
are the production of steam at a high temperature with greater economy in fuel,
and the consumption and prevention of smoke; we attain these objects by the means
herein after described and as illustrated in the accompanying sheet of drawings
which represents an end view of a steam boiler furnace constructed according to
this invention.
In this invention, in lieu of the ordinary fire bars, we employ a greater or less
number of plates a that are formed so that their inner edges b may meet at a point.
in the centre, at a considerably higher level than their outer edges c which rest on
angle bars or other suitable projections d that are attached to the interior of the
flue e.
We place pipes g of small diameter under each of the plates a with holes therein
at intervals corresponding with holes that are formed in the plates a.
By these
means jets of dry steam may be introduced into the fuel at any angle from the
centre towards the sides of the flue, and as complete combustion is thereby obtained
at the sides as in the centre of said flue.
We place a pipe along the centre of upper part of flue as far as the bridge, said
pipe being formed with holes from which jets of dry steam may be introduced into
the flue so as to mix with the smoke which will thereby be more effectually
consumed in its passage along the flue and over the bridge.
Dated this 19th day of October 1892.
THOMAS
PRESCOTT,
53, Arcade Chambers, St. Mary's Gate, Manchester,
Agent for Applicants.
COMPLETE SPECIFICATION.
Improvements in Steam Boiler Furnaces.
We, WILLIAM BEESLEY, of Piercefield Road, Freshfield, Commission Agent
and ALFRED VENTOM WRIGHT of Fromby, Engineer both near Liverpool, in the
County of Lancaster, 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 improvements in steam boiler furnaces, and the objects
of these improvements are first the production of steam at a high temperature, with

page_text: greater economy in fuel than in furnaces previously employed, and second, the
consumption and prevention of smoke; we attain these objects by the mechanism.
hereinafter described, and as illustrated in the accompanying drawings, in which
Fig. 1 is part cross section and part end view of a boiler and furnace with our
invention applied;
Fig. 2 is a side view of the same boiler partly in section, showing the furnace.
which is also partly in section.
Fig. 3 is plan of a plate or grid drawn to an enlarged scale, formed with angular
slots or openings and with a straight surface as is represented as employed in the
construction of a furnace such as is shown in Figs. 1 and 2.
Fig. 4 is transverse section of the same.
Fig. 5, is a longitudinal section showing rear end of flue drawn to an enlarged
scale.
Fig. 6 is a transverse section showing the furnace constructed of plates or grids
of an elliptical form.
In these views similar letters refer to similar parts.
In this invention, in lieu of the ordinary fire bars, we employ a greater or less
number of plates or grids such as a that have either a straight surface or are of an
elliptical form; we place said plates in the flue b with their inner edges e meeting
at a point in the vertical centre at a considerably higher level than their outer
edges d: The aforesaid plates may be supported in the angular position shown on
drawings by bars such as g, or may be bolted together by means of flanges formed
on their inner edges, or the inner edges of the plates may be dovetailed to fit into
each other so as to be retained without bolting.
The outer or lower edges d may be supported in like manner by bars g' or may
rest on angle bars fitted to the inside of the flue b, or by other suitable means, or
said outer edges may rest on the interior surface of the flue only.
es
We form either grooves and slots as shown in Figs. 3 and 4, or holes in the
herein before described plates a, said slots and holes being arranged either in rows
or otherwise and of any preferred size or shape.
said
We place pipes preferably of small diameter, under each of the plates
pipes being supported by suitable carriers either as shown, or that may be formed
on or attached to the underside of said plates.
We form holes at intervals in the pipes ; the position of said holes may corre-
spond with the holes that are formed in the plates a, or in any position that may be
preferred when plates with slots are employed.
By these means jets of dry steam or compressed air that may be heated, are
introduced into the fuel at any angle towards the sides of the flue. At the rear
end of the furnace near the bridge, we place over the angle formed by the junction
of the plates a, an air dome m, said dome being perforated in the upper part, and
over the bridge we place a pipe a bent to the radius of the crown of the flue with
holes n' formed therein at an angle.
We place a pipe p along under the furnace plates a, and carry a branch pipe
with a Tend up under the dome m, extending the pipe p so as to form a connection
with the pipe n at one side of the flue.
Steam or compressed air is introduced into the furnace from the branch pipe q
through the holes c¹ in the dome m, and also at an angle on to the flame from the
holes n' in the pipe n; by these means more perfect combustion is obtained, and
the smoke is more effectually.consumed.
We are aware that prior to our invention, furnaces have been constructed with
the centre placed at a higher level than the sides, we therefore do not claim this
form of construction broadly, but
Having now particularly described and ascertained the nature of this our said
invention and in what manner the same is to be performed, we declare that we are
aware of the Specification of Letters Patent No. 12671 A.D. 1892 granted to John

page_text: Sutton and John William Buckley and we do not claim anything described and.
claimed therein, but what we claim is :-
1st. In a steam boiler furnace constructed with perforated plates or grids, that
are placed at an angle so as to meet in the centre at a higher level than at the sides,.
the combination therewith of an air dome at the rear end of the furnace and a
perforated steam or compressed air pipe with a T end placed therein, in the manner
and for the purpose substantially as herein before described.
2nd. In steam boiler furnaces, the use of a pipe placed over the bridge and near
the crown of the flue with perforations formed therein at an angle through which a
supply of steam or compressed air may be directed on to the flame, in the manner
and for the purpose substantially as herein before described.
1000
THOMAS PRESCOTT,
53, Arcade Chambers, St. Mary's Gate, Manchester,
Agent for Applicants.