Improvements applicable to Steam-boiler Furnaces.
Year: 1890

page_text: Date of Application, 2nd Apr., 1890
Complete Specification Lett, 1st Jan., 1891-Accepted, 14th Mar., 1891
PROVISIONAL SPECIFICATION.
Improvements applicable to Steam-boiler Furnaces.
We, WILLIAM HENRY WILSON, of Kinder Bank, Merchant, and JAMES
WELSH, of Bowden Bridge, Calico Printer, both of Hayfield, in the County of
Derby, do hereby declare the nature of this invention to be as follows:-
The object of this invention is to produce steam by the use of oils or other
hydro-carbon fluids in connection with a coal fire at a much lower cost than is
possible with coal alone, which we are enabled to effect by the following means.
We convey the oil or other hydro-carbon fluid from a tank (placed at an elevation
and at a convenient distance from the boilers) by means of a pipe into a small
chamber of brass or other suitable metal, placed outside the boiler above the
furnace door. This chamber is in the form of a bulb or enlargement on a steam
pipe which conveys steam from the boiler into an arrangement of pipes within the
furnace (as hereinafter described) and the lower end of the oil supply pipe is made
in the form of a jet and carried into the centre of the steam pipe just below the
chamber or bulb so that the steam acts as an injector and carries the oil along with
it into the pipes inside the furnace.
The pipe conveying the steam and oil enters the furnace above the door and is
carried forward under the crown of the flue to near the centre of the first set of
fire-bars where it is forked into two branches which proceed to about over the
centre of the second set of fire-bars where the two branches unite and return back
along the centre to a transverse curved distributing pipe which reaches nearly across
the flue over the first set of fire bars and is perforated at the back with a number
of fine holes.
In passing through this arrangement of pipes the steam becomes superheated and
the oil or other hydro-carbon Huid becomes volatilized by the heat from the coal
fire beneath and on issuing from the fine perforations it immediately bursts into
flame. The distributing pipe is so situated and arranged that the flame plays
directly upon the under side of the branch pipes, and thus the apparatus makes its
own gas without further assistance from the coal fire which is not necessary after
sufficient gas has been produced to set the apparatus fairly at work, so that coal
can be almost dispensed with.
The steam pipe and the oil supply pipe are each provided with a suitable stop
cock.
The apparatus may be made of wrought iron tubing or any other metal best
adapted for withstanding the heat.
We would remark that the form, dimensions, and arrangement of the parts may
be also varied without altering the principle of construction.
Dated this 1st day of April 1890.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements applicable to Steam Boiler Furnaces.
We, WILLIAM HENRY WILSON, of Kinder Bank, Merchant, and JAMES
WELSH, of Bowden Bridge, Calico Printer, both of Hayfield, in the County of
Derby, 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 :-
The object of this invention is to produce steam by the use of oils or other
hydro-carbon fluids in connection with a coal fire at a much lower cost than is
possible with coal alone, which we are enabled to effect by our improvements.
The nature of our said invention and the manner in which the same is to be
performed or carried into practical effect will be readily understood on reference to
the annexed sheet of drawings and the following explanation thereof.
Fig. 1. is a longitudinal section and Fig. 2 a transverse section of a steam boiler
furnace showing the application of our invention thereto.
Fig. 3 is a plan of our improved apparatus detached, and Fig. 4. is a section of a
portion thereof drawn to a larger scale.
a is part of the boiler flue, the fire bars, and c the dead plate.
For the purposes of our invention we convey the oil or other hydro-carbon fluid
from a tank (placed at an elevation at a convenient distance from the boiler) by
means of a pipe d into a small chamber e of brass or other suitable metal placed
outside the boiler above the furnace door.
This chamber is made in the form of a bulb or enlargement preferably on the
pipe d as shown and in the interior thereof we arrange a steam jet f in connection
with a pipe g which conveys steam from the boiler; but in some cases we propose
to make the bulb or enlargement e on the steam pipe and to make the lower end of
the oil supply pipe d in the form of a jet carried into the centre of the steam pipe g
just below the chamber or bulb.
In either case the steam acts as an injector and carries the oil along with it into
the pipes inside the furnace.
The pipe conveying the steam and oil enters the furnace above the door and is
carried forward under the crown of the flue to about the end of the dead plate c
where it is forked out into two branches and 2 which proceed to about the end
of the first set of fire bars where the two branches and 2, unite again in a
pipe, which returns back along the centre to a transverse curved distributing
pipe which reaches nearly across the flue over about the front of the first set of
fire bars and is perforated (slightly upwards) at the back with a number of fine
holes.
In passing through this arrangement of pipes the steam becomes superheated and
the oil or other hydro-carbon fluid becomes volatilized by the heat from the coal
fire beneath, and on issuing from the fine perforations it immediately bursts into a
flame.
The distributing pipe i is so situated and arranged that the flame plays directly
upon the underside of the branch pipes and 2 and return pipe ³, and thus the
apparatus makes its own gas without further assistance from the coal fire which is
no longer necessary after sufficient gas has been produced to set the apparatus
fairly at work, so that coal can almost be dispensed with.
The steam pipe 9 and oil supply_pipe d are each provided with a suitable
stop tap.
The apparatus may be made of wrought iron tubing or any other suitable metal
best adapted for withstanding the heat.
We would also remark that the form dimensions and arrangement of the parts
may also be varied without altering the principle of construction.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is:-
The improved apparatus for burning oils or other hydro-carbon fluids in con-
nection with a coal fire, by the combination of an oil supply pipe and a steam jet,
with branch pipes and a curved perforated distributing pipe constructed and
arranged substantially as hereinbefore described and illustrated by the drawings
annexed.
Dated this 21st day of December 1890.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicants.