Improvements in Self-contained Gas-fired Steam Generators.
Year: 1891

page_text: Date of Application, 17th June, 1891
Complete Specification Left, 15th Mar., 1892-Accepted, 16th Apr., 1892
PROVISIONAL SPECIFICATION.
Improvements in Self-contained Gas-fired Steam Generators.
We, GEORGE HENRY TAYLOR, of 69 Chancery Lane, in the County of London,
Engineer, and WILHELM OTTO AXEL LOWE, of Queen Insurance Building, Dale
Street, Liverpool, in the County of Lancaster, Merchant, do hereby declare the
nature of this invention to be as follows:-
Our invention relates to improvements in self-contained gas-fired steam generators,
and is more specially devised for marine and horizontal generators; it has for its
object to so construct these generators as to ensure intense and perfect combustion
of the fuel, rapid production of steam, and the abolition of smoke.
According to our invention, and when applying the same to marine and horizontal
generators, we lead the gases generated in a gas producer furnace, forming an integral
part of the generator, through a horizontally arranged main gas tube, or tubes,
communicating by means of branch gas tubes with a combustion chamber placed
laterally and adjacent to the producer furnace. This horizontal main gas tube (or
tubes) may be led through a waste heat box situated near that end of the generator
opposite to the gas producer furnace, wherein the said main gas tube (or tubes)
may branch off into the before mentioned gas tubes connecting the combustion
chamber with the producer furnace. The products of combustion resulting from
the burning of the gases within the combustion chamber are led through other
tubes into the waste heat box, whence they find their way through a tube, or set of
fire tubes, and escape through an uptake into a chimney.
The air necessary to support combustion may be introduced into the combustion
chamber in any suitable manner, and is heated to the required temperature, either
by internal or external means, before being introduced.
The producer furnace and combustion chamber are lined with fire brick, and
these parts, together with the waste heat box and the various tubes are all contained
within the steam generator and are surrounded with the water therein.
If desirable the combustion chamber may be arranged to surround the gas
producer furnace.
The above improvements may also be rendered applicable to vertical gas-fired
steam generators.
Or we may provide the flues leading the gases to the combustion chamber, and
those leading the products of combustion from the combustion chamber, with
circulating cross tubes through which the water may circulate, and in which case
the products of combustion may be led either to the waste heat box, or to an
economiser.
Dated this 17th day of June 1801
ERNEST DE PASS,
78, Fleet Street, London, and 6, Victoria Street, Nottingham,
Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Self-contained Gas-fired Steam Generators.
We, GEORGE HENRY TAYLOR, of 69 Chancery Lane, in the County of London,
Engineer, and WILHELM OTTO AXEL LOWE, of Queen Insurance Building, Dale
Sireet, Liverpool, in the County of Lancaster, Merchant, do hereby declare the
nature of this invention and in what manner the same is to be performed, to be
רנס ...D

page_text: particularly described and ascertained in and by the following statement, reference
being had to the accompanying drawings and to the letters and figures marked
thereon, that is to say :-
Our invention relates to improvements in self-contained gas-fired steam generators,
and is more specially devised for marine and horizontal generators; it has for its
object to so construct these generators as to ensure intense and perfect combustion
of the fuel, rapid production of steam, and the abatement of smoke.
According to our invention, and when applying the same to marine and horizontal
generators, we lead the gases generated in a gas producer furnace, forming an
integral part of the generator, through a horizontally arranged main gas tube, or
tubes, communicating, by means of branch gas tubes, with a combustion chamber
placed laterally and adjacent to the producer furnace. This horizontal main gas
tube (or tubes) may be led through a waste heat box situated near that end of the
generator opposite to the gas producer furnace wherein the said main gas tube
(or tubes) may branch off into the before mentioned gas tubes connecting the
combustion chamber with the producer furnace. The products of combustion,
resulting from. the burning of the gases within the combustion chamber, are led
through other tubes into the waste heat box, whence they find their way through
a tube, or set of tubes, and escape through an uptake into a chimney.
The air necessary to support combustion may be introduced into the combustion
chamber in any suitable manner, and is heated to the required temperature, either
by internal or external means, before being introduced.
The producer furnace and combustion chamber, as well as the main gas tube (or
tubes) may be lined with firebrick, and these parts, together with the waste heat
box and the various tubes, are all contained within the steam generator and are
surrounded with the water therein.
If desirable, the combustion chamber may be arranged to partially or wholly
surround the gas producer furnace.
Or we may provide the tubes leading the gases to the combustion chamber, and
those leading the products of combustion from the combustion chamber, with
circulating cross tubes through which the water may circulate, and in which case
the products of combustion may be led either to the waste heat box, or to an
cconomiser.
In order that our invention may be readily understood, we proceed to describe
the same fully with reference to the accompanying drawings, in which :
Fig. 1 is a longitudinal vertical section ;
Fig. 2 a longitudinal horizontal section on the line B, B, of Fig. 3; and
Fig. 3 a vertical cross section on the line A, A, of Fig. 1, showing a horizontal
or marine boiler constructed in accordance with our invention.
The course taken by the producer gases is indicated by plain arrows, while that
of the combusted gases is indicated by feathered arrows.
a is the gas producer furnace which is situated within and near one end of the
generator. A horizontal gas tube leads the gases, generated in the producer
furnace, to the opposite end of the generator where said gas tube is connected to
branch tubes ₁, b, contained within the waste heat box c. The branch tubes
may be provided near the upper end, where they are connected to the main gas
tube, with a cover b× for facilitating access to the tubes. A man hole c¹ is provided
by means of which access may be had to the waste heat box. Each of the branch
tubes is in connection with a gas tube 62 through which the gases are led to the
combustion chamber d situated laterally and adjacent to the producer furnace.
The air to support combustion is admitted to the combustion chamber through the
openings e', e, which, by means of the pipes e², e², may be in communication with
the uptake e leading to the chimney stack. The air can thus be admitted to the
combustion chamber in a heated state. We do not however confine ourselves to
this mode of heating the air, as any other suitable method may be adopted.
The products of combustion or combusted gases resulting from the burning of the

page_text: producer gases in the combustion chamber are led through the horizontal heating
tubes to the waste heat box c whence they are conducted through the set of tubes g
to the uptake e.
In the drawings we have shown the generator provided with a steam dome h, but.
it will be readily understood that when the steam space above the water line in the
generator is sufficient, the steam dome may be dispensed with.
As will be seen more clearly in Fig. 1, the producer, combustion chamber, and
waste heat box, as well as all the other heating parts, are entirely covered by and.
surrounded with the water in the generator, and by reason of the circuitous course
which the gases are caused to take, nearly all the heat is abstracted from them and
absorbed by the water before said gases are allowed to escape to the chimney.
Fuel is fed to the producer furnace through the opening a' from a hopper, and
clinker can be removed from the grate bars, or ashes from the ash pit, through the
opening a².
In some cases we prefer to make the tubes b, b², and of corrugated metal in
order to give additional strength thereto, and to offer greater heating surface; and
we may also, if we deem it advisable, line all these tubes with fire brick, as well as
the producer furnace and combustion chamber.
In the event of any gases passing from the combustion chamber into the waste
heat box only partially ignited and thereby requiring a further supply of oxygen
to ensure their complete combustion, a supply of heated air may be introduced into
the waste heat box in manner similar to that described with reference to the
combustion chamber, so that, in effect, the waste heat box becomes, at such times,.
a secondary combustion chamber. In this manner the fullest possible combustion
of the gases generated will be effected and the efficiency of the generator enhanced.
We may, if desirable, augment the draught by means of a steam jet blower of
any suitable type situated within the chimney stack or funnel. And in addition to
this we may also provide a steam jet undergrate blower.
A steam generator constructed as above described may, with obvions modifications,.
be applied to locomotives.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that
what we claim is :-
1. A self-contained gas-fired steam generator in which the gases generated in
a producer furnace, situated near one end of the generator, are led by a main
gas tube (or tubes) to branch tubes contained within a waste heat box situated
near the opposite end of such generator, and which branch tubes communicate,.
by means of other gas tubes, with a combustion chamber located between the
producer furnace and the waste heat box, and in which combustion chamber the
gases mix with heated air entering through suitable inlets, and are ignited and
Burned, the products of combustion, or combusted gases, being then led through
suitable heating tubes into the waste heat box, whence they are conducted
through a set of tubes to an uptake or chimney stack, substantially as hereinbefore
described.
2. The improved self-contained gas-fired marine or horizontal steam generator
having its parts arranged and combined substantially as hereinbefore described and
shown by the annexed drawings.
Dated this 15th day of March 1892.
ERNEST DE PASS,
Chartered Patent Agent,
78, Fleet Street, London, and 6, Victoria Street, Nottingham,
Agent for the Applicants.