Improvements in Apparatus for Generating a Mixture of Steam and Furnace Gases.
Year: 1896

page_text: Date of Application, 7th May, 1896
Complete Specification Left, 29th Jan., 1897-Accepted, 17th Apr., 1897
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Generating a Mixture of Steam and
Furnace Gases.
I, EDWARD HOYLE, 1, Pleasant View, Longfield Road, Todmorden, Cabinet
Maker, do hereby declare the nature of this invention to be as follows:-
An enclosed fire or flame, the products of combustion being passed through a
tank containing water or other liquid in order that all dust and grit may be
deposited, and the temperature of the gases lowered through the generation of
steam or vapour so that the gases and steam, or gases and vapour go to the engine
as pure as possible, and at as low a temperature as may be desired, or be consistent
with non-condensation in the cylinder. The contrivance is as follows:-A strong
receiver, into which atmospheric air is pumped or forced to the pressure required.
On opening a stop-valve the air rushes from this receiver into a casing which
contains the furnace. Below the furnace is a space in which the air collects before
going through it, to prevent violent action upon the fuel. Above the furnace is
a space in which the products of combustion collect, to prevent violent action upon
the fuel, and also to allow as much dust and grit as possible to settle down and go
away with the ashes. The hot air, gases, smoke, and the remaining dust and grit,
on leaving this space pass into the tank above-mentioned, and become intimately
mixed with the liquid contained in it, so that all smoke, dust, and grit, are absorbed,
and steam or vapour generated to the extent desired, that is, so that the air, gases,.
and steam or vapour, are not too high or too low in temperature to be effective.
The motor, which may be the ordinary double-acting steam engine, will receive
the air, gases, and steam or vapour, perfectly pure, all solid matter being absorbed
by the liquid in the tank. The tank will be continuously supplied with liquid,
over and above the waste which goes to the engine as steam or vapour, a portion
of its contents being constantly taken from it to keep the contents fresh enough to
answer their purpose. The tank will be practically a boiler, and will also act as a
purifier of the products of the furnace.
Dated this 6th day of May 1896.
EDWARD HOYLE.
Improvements in Apparatus for Generating a Mixture of Steam and
Furnace Gases.
I, EDWARD HOYLE, of 1 Pleasant View, Longfield Road, Todmorden, Cabinet
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 :-
A A A A in the figure is a strong cylindrical casing, divided by a strong
partition B. C is a furnace, and above and below are the air-spaces D D'. E is
an opening through which the fire is lit. The air necessary for the fire enters at
the opening F until the starting of the engine. G is an opening through which
the smoke passes off to the chimney. H H is a boiler, filled with water to I.
HH

page_text: J is a pipe, one end of which is fixed in the partition B, this end of the pipe being
open to the air-space D. In this pipe is a valve which opens by pressure from the
furnace, but closes by pressure from the boiler. The pipe is taken to nearly the
top of the boiler, and then brought down to nearly the bottom of the water. Any
number of pipes of this kind may be used, the object being to get an intimate
mixture of the hot air and gases from the furnace with the water in the boiler;
either a greater number of small pipes or a smaller number of large pipes throwing
out a considerable number of jets. These pipes, and the boiler as well, may be of
such a length as to ensure that no dust or grit from the furnace shall enter the
cylinder of the engine. The fire is fed from the hopper K, by means of the
screw L, the screw being driven by the pulley M. The part of the shaft within
the hopper will be encased, to prevent friction from the pressure of the fuel. The
hopper will be charged with fuel for the whole time it is intended to run the
engine at a stretch; and previous to charging it the pressure of the gases will be
shut off at N. The pressure in the hopper will then be relieved by opening the
stop-cock O, and allowing the gases to escape through the pipe P into the chimney.
A small cover will then be removed from the hopper, and a funnel inserted, by
means of which the hopper will be filled. Q is a receiver into which atmospheric
air is pumped when the engine is in motion. The supply of air to the pump will be
regulated to suit the requirements of the engine. R is a pipe which conveys air
from the receiver to the air-space D', and to the furnace; and S is a valve which
regulates the supply. The hot air and gases, and the steam generated by them,
leave the boiler at two places, T T, so as to disturb the contents of the boiler as
little as possible. The pipes T T, or as many more as may be required to get the
gases and steam free from solid matter, will unite, and the gases and steam will go
to the engine through a single pipe. On this pipe is a stop-valve. A safety-valve
will be required for the furnace as well as for the boiler. When the fire is
sufficiently intense, and the steam in the boiler at the pressure required we are
ready for starting the engine. The openings E, F, G, are now properly closed,
the valve N being open. A few moments after the starting of the engine the
pressure is the same, or nearly so, in the receiver and throughout the whole of the
casing A A A A, the hopper K included. The engine keeps up the pressure in
the receiver, turns the screw L and thus allows the fuel to fall into the furnace,
and by any suitable arrangement keeps the fire itself in proper condition. The
boiler will be continuously supplied with water over and above the waste which
goes to the engine as steam, a portion of the water being constantly allowed to
escape, in order to keep the water in the boiler fresh enough to answer as a
purifier of the air and gases from the furnace. The engine itself may be the
ordinary double-acting steam engine, and may work expansively.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is-
The combination of-
1. A receiver in which air is compressed.
2. An enclosed fire, the combustion being kept up by the compressed air.
3. The mode of feeding a fire that burns under pressure, exemplified by the
hopper and its accessories; and,
4. A boiler in which the hot air and gases from the furnace come directly in
contact with the water or other liquid contained in it, thus acting as a purifier as
well as a boiler; each and all for the purpose of heating, or of obtaining motive
power.
Dated this 28th day of January 1897
EDWARD HOYLE.