Improvements in Locomotive and other like Boilers,
Year: 1892

page_text: Date of Application, 7th May, 1892
Complete Specification Left, 7th Feb., 1893-Accepted, 6th May, 1893
PROVISIONAL SPECIFICATION.
Improvements in Locomotive and other like Boilers,
We, GEORGE HENRY TAYLOR, of Cadby Hall Works, West Kensington, in
the County of London, Engineer, and WILHELM OTTO AXEL LOWE, of 10 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 that class or type of locomotive and other like boilers
in which a combustion chamber is arranged within the barrel or shell of the boiler
and is in communication with the fire box or furnace, and which fire box or furnace,
according to our invention, constitutes a gas producer.
Our invention has for its object to so construct these boilers that the gases
generated in the fire box or furnace, and which may have been partially
burned therein, shall be conducted into the combustion chamber wherein they
shall be more fully burned and a secondary or more thorough combustion ensue,
thereby producing a powerful and intense heat and hence a rapid generation of
steam.
For this purpose the combustion chamber, which is provided with a man hole, is
arranged in proximity to the fire box or furnace, and the gases evolved in the latter
are led through suitable flues, passages, or conduits, to the combustion chamber
where they are caused to mix with air which may enter at right angles to the
direction of the incoming gases. The air is preferably heated by causing it to
pass through a chamber or passage situated in the fire box or furnace and
communicating with the combustion chamber, although if found more advantageous
the air may be admitted without being previously heated.
A hopper may be arranged in front of the fire box or furnace into which the
fuel to support combustion is fed, and this hopper is furnished with two doors so
situated that one will serve for admitting the charge of fuel, and the other for
introducing a tool for purposes of stoking. If desirable, the fire box or furnace,
the combustion chamber, and the flues or conduits, may be lined with any suitable
fire resisting material.
Although our invention is more especially suitable for locomotive boilers, we can
equally well adapt it to boilers of other constructions, such for instance, as boilers
for traction and agricultural engines.
ERNEST DE PASS,
Chartered Patent Agent,
78, Fleet Street, London, and 6, Victoria Street, Nottingham,
Agent for the Applicants.
COMPLETE SPECIFICATION.
Improvements in Locomotive and other like Boilers.
We, GEORGE HENRY TAYLOR of Cadby Hall Works, West Kensington in the
County of London, Engineer and WILHELM OTTO AXEL LOWE of 10 Dale
Street, Liverpool, in the County of Lancashire Merchant 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 that class or type of locomotive and other like boilers
in which a combustion chamber is arranged within the barrel or shell of the boiler.

page_text: and is in communication with the fire box or furnace and which fire box or furnace
according to our invention constitutes a gas producer.
Our invention has for its object to so construct these boilers that the gases
generated in the fire box or furnace and which may have been partially burned
therein shall be conducted into the combustion chamber wherein they shall be more
fully burned and a secondary or more thorough combustion ensue, thereby
producing a powerful intense heat and hence a rapid generation of steam.
For this purpose the combustion chamber which is provided with a manhole, is
arranged in proximity to the firebox or furnace, and the gases evolved in the latter
are led through suitable flues, passages, or conduits, to the combustion chamber
where they are caused to mix with air which may enter at right angles to the
direction of the incoming gases. The air is preferably heated by causing it to pass
through a chamber or passage situated in the firebox or furnace and communicating
with the combustion chamber, although if found more advantageous the air may be
admitted without being previously heated.
A hopper may be arranged in front of the firebox or furnace into which the
fuel to support combustion is fed and this hopper is furnished with two doors so
situated that one will serve for admitting the charge of fuel and the other for
introducing a tool for purposes of stoking. If desirable the firebox or furnace
the combustion chamber and the flues or conduits, may be lined with any suitable
fire-resisting material.
Although our invention is more especially suitable for locomotive boilers, we can
equally well adapt it to other boilers of a similar type.
In the accompanying drawings which illustrate the application of the invention
to a boiler of a locomotive engine,
Fig. 1 is a longitudinal vertical section through the boiler combustion chamber
and firebox.
Fig. 2 is a horizontal section upon the line 2-2 of Fig. 1.
Fig. 3 is a vertical cross section on the line 3-3 of Fig. 1, and
Fig. 4 is a vertical cross section on the line 4-4 of Fig. 1.
Like letters represent like parts throughout the drawings.
A is a closed furnace or fire box having fire bars A¹ and a fuel charging shoot
or aperture B closed by a lid B' and having a second lid B pivotted at B³ and
turning down in the manner indicated in the dot and dash line so as to provide
access to the fire for stirring or other purposes. The shape of this shoot
may be
varied according to circumstances, but the form shown is convenient for use in a
locomotive engine.
In the tubular portion of the boiler behind the fire box is the combustion
chamber C to which the gases from the fire box have access by the passages or
channels D arranged as is clearly shown in the drawings outside the boiler
preferably one on each side. The air necessary to promote combustion_enters the
chamber C by the passages C₁ communicating with an air chamber E which is
supplied with air by the inlets E¹ the air in the chamber E becoming highly heated
by its contiguity to the fire box A.
The passages D may be provided with open ends and covers D₁ by which
access is afforded to the passages for cleaning purposes, a similar cover C being
provided to the passages C¹ and so placed as to afford access to both bends. The
bottom of the fire box A may be closed in by damper doors F so as to regulate
the draught.
With the arrangement shown the air enters the chamber C by the passage C¹
in a direction perpendicular to that by which the heated gases enter by the
passages D from the fire box thus causing an effective mingling of the two and
very perfect combustion. The air may be introduced in another manner or in
another direction, but the arrangement shown is found to give excellent results.
The heated gases and flames from the combustion chamber C pass along the tubes G
to the chimney in the usual manner.

page_text: The chambers A and C and passages D are preferably lined with fire-resisting
material H.
With the arrangement shown the air enters by the passages or openings E¹ into
the heating chamber E and so by the passages C' to the combustion chamber C
into which it is forced by the movement of the engine the passages E' facing in
the direction in which it usually runs. If desired besides the passages E¹ shown
in the drawings other similar passages facing in the opposite direction may be
provided so that air will be forced into the chamber C in whichever direction the
engine may travel and valves or dampers may be provided to close the passages
out of use; or when the engine travels backwards the air may be drawn into the
chamber E merely by the draught through the chimney.
The passages D may be water-jacketted for the purpose of raising steam as well
as preventing radiation or they may be air-jacketted or otherwise coated or
protected to prevent radiation.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is,―
1. In a steam boiler of the locomotive or similar type the combination with a
closed fire box such as A of a combustion chamber such as C located within the
barrel portion of the boiler and communicating with the fire box by one or more
passages such as D substantially as and for the purpose described, and illustrated
in the accompanying drawings.
2. In a boiler of the locomotive or similar type the employment of a combustion
chamber such as C supplied with unconsumed or partly consumed gaseous fuel from
the fire box substantially as described and illustrated in the accompanying
drawings.
3. In a steam boiler of the locomotive or similar type the combination with a
combustion chamber such as C located within the tubular portion of the boiler of
an air heating chamber such as E through which the air passes and in which it
becomes heated on its way to the combustion chamber the said chamber E being
heated by or from the fire box A substantially as described and illustrated in the
accompanying drawings.
4. In a boiler of the locomotive or similar type the combination with a closed
fire box such as A combustion chamber C passages D and C' of an air heating
chamber such as E substantially as described and illustrated in the accompanying
drawings.
5. In a boiler of the locomotive or similar type the combination with an air
heating chamber such as E of passages or openings such as E' facing in the
direction in which the engine runs substantially as and for the purpose described
and illustrated in the accompanying drawings.
Dated this 7th day of February 1895.
GEO. H. TAYLOR.
W. O. A. LOWE.
W. P. Thompson & Boult,
Agents for the Applicants.