Year: 1896

page_text: A communication from JEAN BAPTISTE LOQUET and JEAN BAPTISTE KETELAIR,
both of 10', Quai St. Laurent, Ant verp, in the Kingdom of Belgium,
Engineers.
I ALFRED JULIUS BOULT of 111 Hatton Garden in the County of Middlesex,
Chartered Patent Agent do hereby declare the nature of this invention to be as
follows:-
This invention relates to steam generators or boilers which offer great advantages
as compared with boilers used hitherto by reason of their providing much quicker
and more economical vaporization of water. The distinguishing feature of the
new boiler consists of a furnace-chamber made in one with the outer boiler shell
and a fire-box or combustion chamber arranged in the interior of the cylindrical
body of the boiler in such a manner as to have its outer surface entirely surrounded
by water. In this fire-box which is supported by suitable cross-stays takes place
the first deflection of the flames which pass through a preferably oval flue into a
second fire-box, constructed and arranged like the first one. This second fire-box
in which the second deflection of the flames takes place, is connected to the front
plate of the boiler by stays and is accessible through a tube closed at the front
plate by a manhole. The fire box is connected to the furnace chamber by an
upright stay and is in communication with the sinoke-box of the chimney through
preferably two flue tubes which are screwed into the fire-box at one end and into
the back plate of the boiler at the other. In the first flue or furnace chamber is
arranged a grate, this chamber being closed in front by a plate having a fire-door.
The flames and gases move first from the front towards the back of the boiler,
then towards the front and again towards the back, the reversals taking place in
the fire-boxes which are readily accessible for cleaning. The boiler is completed
by longitudinal stays and a steam dome and may have any of the usual fittings,
such as water gauge, steam gauge safety valve, steam whistle and drain cock and..
may be supported on say three cast-iron bearers.
The plate forming the furnace chamber is bent in such manner that its two
extremities join the cylindrical boiler shell at a distance of say 50 cm. from each
other so that this shell will be continuous with the wail of the furnace chamber.
A better utilisation of heat generated in the combustion chamber and a practical
arrangement of the ash-pit than have hitherto been attainable are thereby attained.
All the parts of the boiler are arranged so as not to present any difficulties in
construction or in cleaning and repairing it and can be made of any desired
dimensions.
Dated this 29th day of May 1896.
BOULT & WADE,
Agents for the Applicant.

page_text: A communication from JEAN BAPTISTE LOQUET and JEAN BAPTISTE KETELAIR,
both of 10 Quai St. Laurent, Antwerp, in the Kingdom of Belgium,
Engineers.
I, ALFRED JULIUS BOULT of 111 Hatton Garden in the County of Middlesex,
Chartered Patent Agent, 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 :-
This invention relates to steam generators or boilers which offer great advantages
as compared with boilers used hitherto by reason of their providing much quicker
and more economical vaporization of water. A steam generator according to the
present invention is represented in the accompanying drawings, in which
Fig. 1 is in longitudinal section the arrangement inside being shown in elevation,
Fig. 2 is a front view and
Fig. 3a back view of the steam generator.
The distinguishing feature of the new steam generator consists of a furnace
chamber A, made in one with the outer boiler shell B in the manner shown in
Fig. 2, a fire box or combustion chamber C, arranged in the interior of the
cylindrical body of the boiler in such a manner as to have its outer surface entirely
surrounded by water. In this fire-box which is supported by suitable cross-stays D
takes place the first deflection of the flames which pass through a
preferably oval
flue E into a second fire-box F constructed and arranged like the first one C.
This second firebox F in which the second deflection of the flames takes place is
connected to the front plate J of the boiler by stays G and is accessible through
a tube H closed at the front plate by a manhole K. The fire box F is connected
to the furnace chamber A by a vertical stay L and is in communication with the
smoke box M of the chimney N by means of preferably two flue tubes which
are screwed into the fire box F at one end and into the back plate P of the steam
generator at the other. In the first flue or furnace chamber A is arranged a
grate R this chamber being closed in front by a plate having a fire door Q. Air
and produ ts of combustion follow the path indicated by the arrows before escaping
through the chimney, these reversals of flow taking place in the fire boxes C and F
which are readily accessible for cleaning. The generator is completed by
longitudinal stays S (Fig. 1), and a steam dome T and may have any of the usual
fittings, such as water gauge, steam gauge, safety valve, steam whistle and drain
cock, and may be supported on say three cast iron bearers U.
The shape of the furnace chamber or flue A, which is of great importance, is
shown in Figs. 1 and 2. It will be seen there that the plate forming the furnace
chamber is bent in such manner that its two extremities V join the cylindrical
boiler shell at a distance of say 50 cm. from each other, so that this shell will be
continuous with the wall of the furnace chamber or flue A: A better utilisation
of heat generated in the combustion chamber and a more practical arrangement of
the ash-pit than have hitherto been attainable are thereby attained. All the parts
of the boiler are arranged so as not to present any difficulties in construction or in
cleaning and repairing and can be made of any desired dimensions.
Having now particularly described and ascertained the nature of the said inven-
tion as communicated to me by my foreign correspondents, and in what manner the
same is to be performed, I declare that what I claim is :-
1. In a steam generator the combination with a furnace tube as A, of a fire box

page_text: as C, arranged at the back of the boiler and of a second fire box as F arranged in
front of the boiler, the two fire boxes being supported by stays so as to be supported
at a distance from the walls of the boiler and to be wholly surrounded by water,.
substantially as described.
2. In a steam generator the combination with a furnace tube as A, of two fire
boxes as C and F, one arranged at the back and the other in the front part of the
boiler, the two hoxes being connected together by a tube E the front fire box
communicating by means of two tubes O with a smoke box, substantially as.
described.
3. A steam generator characterised by the arrangement of a furnace tube A
secured to and forming part of the cylindrical shell B and connected to a fire box
placed at the back of the boiler, the first return of the products of combustion
taking place in said fire box, and the second fire box F in the front part of the
boiler, into which the flames pass from the first fire box through a single tube and
thence enter the smoke box M and the chimney through two heating tubes as O
substantially as described.
4. The combination and arrangement of parts constituting the improved steam.
generator, substantially as described and illustrated in the accompanying drawings..
Dated this 29th day of March 1897.
BOULT & WADE,
Agents for the Applicant.