Improvements in or connected with Furnaces and Steam Generators for Motor Vehicles.
Year: 1896

page_text: Date of Application, 15th Oct., 1890
2005
Date of Application, 15th UCL., 1890
2000
Complete Specification Left, 15th July, 1897—Accepted, 21st Aug., 1897
PROVISIONAL SPECIFICATION.
Improvements in or connected with Furnaces and Steam Generators
for Motor Vehicles.
We, WILLIAM SIMPSON, of 8 Minshull Street, Cotton Manufacturer, WALTER-
LIGHT BODMAN of 28 Lower Moss Lane, Manufacturer and DANIEL HARRISON
SIMPSON of 28 Lower Moss Lane, Engineer, all of Manchester in the County of
Lancaster do hereby declare the nature of this invention to be as follows:-
This invention relates more particulary to the furnace and combustion chamber
arrangement of steam generators for motor vehicles and consists in improvements
in the constructive arrangement of the furnace, combustion chamber and flues
by which improvements we can more readily control or regulate the generation
of steam and the employment of the furnace gases.
According to our invention we arrange the generator in a chamber apart from
the furnace with which it communicates by means of a flue provided with a
damper. A separate flue is also provided and arranged so that the same damper
covers its entrance when the entrance from the furnace to the combustion chamber
of the generator is open and rice versa. A main flue is arranged preferably
beneath the generator and leading from the back of the ashpan to the chimney
or its equivalent and provided with a damper to close the entrance to it. The
separate flue above referred to leads into the main flue, the two dampers being
so arranged and connected that one movement closes the entrance to the generator
combustion chamber. and opens the entrance from the ash pan to the main flue,
allowing the furnace gases to pass through the separate flue into the main flue.
The fire grate is hinged at the back of the furnace and supported at the front
on catches, which when released allow the front part of the grate to drop into
the ash pan and so facilitate the cleaning out of the furnace.
A hopper is provided preferably above the furnace casing, having a shoot lead-
ing into the furnace provided with a cover to the internal opening which cover is
held up to the opening by means of springs fixed externally to the furnace casing,
er by weight or otherwise. The casing of the furnace and generator combustion
chamber is so constructed that the top or one of the sides can be readily removed
for the purpose of removing the generator and cleaning and renewal of parts.
The generator we employ is of the water tube description and may be constructed
in any well known and convenient form. The steam is lod from the generator
through a pipe passing through the casing to the engine and in some cases it may
be passed through a superheater of piping fixed above the furnace grate.
silencer for exhaust steam is also fixed in the furnace above the grate. This
consists of a chest fitted with baffle plates or filed with loose pieces of metal or
of refractory material. The exhaust steam pipe is led into this chest and then out
into the flue leading into the generator combustion chamber.
1000
R. J. URQUHART,
57 Barton Arcade, Manchester, and 6, Clayton Square, Liverpool,
Consulting Engineer and Patent Agent.

page_text: COMPLETE SPECIFICATION.
Improvements in or connected with Furnaces and Steam Generators
for Motor Vehicles.
We WILLIAM SIMPSON of 8 Minshull Street, Manchester in the County of
Lancaster, Cotton Manufacturer, and WALTER LIGHT BODMAN, Manufacturer,
and DANIEL HARRISON SIMPSON, Engineer, both of Village View, Burnage Lane,
Didsbury, in the County of Lancaster, and late of 28 Lower Moss Lane,
Manchester, in the County of Lancaster, 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 more particularly to the furnace and combustion chamber
arrangement of Steam generators for Motor vehicles, and consists in improvements
in the constructive arrangement of the furnace, combustion chamber and flues,
by which improvements we can more readily control or regulate the generation of
steam and the employment of the furnace gases.
The sheet of drawings attached hereunto illustrates the manner of carrying
out our invention. Figure 1 represents a longitudinal section of our improved
arrangement. Figures 2 and 3 represent two sectional elevations of our improved
arrangement when a vertical arrangement of the generator and furnace is required..
In carrying out our invention in one case to which Figure 1 refers we arrange
the generator a in a chamber 6 separated from the furnace c by a double wall of
fire-brick d through which double wall there is a flue d' leading firstly into the
chamber and secondly into the passage between the sides of the double wall d.
A damper 3 is arranged to cover alternately the openings into the chamber b
and into the passage d. The passage leads into a flue e communicating with
the chimney or outlet f. This flue e in some cases communicates with the ash
pit below the grate g, the opening a being closed and opened at will by a damper
so that when the generator is not required for a short time the draught passes
along the fluce into the chimney f. In other cases however the opening e is
dispensed with and when the generator is not required to produce steam the
damper closes the opening into the chamber band the furnace gases are led
along the passage de into the flue c and chimney f. The chamber b communicates
with the flue e and chimney f, through the opening b. When the two dampers d
and are employed they are opened simultaneously by the handle h which is
connected therewith by a rod . Preferably the crown of the furnace has an
opening fitted with a hopper i which may be of any suitable construction.
Figures 2 and 3 refer to another arrangement in which the generator a is
disposed directly above the grate y or furnace c in the chamber b, there being
provided a flue leading into the chimney f. There is a flue formed by the
walls behind the furnace and combustion or boiler chamber entered preferably
from the front end of the grate 9 by the opening which also leads into the
chimney Where the flues or passages band d lead into the chimney f there
is provided a damper arranged to alternately close and open communication
with these passages by means of the handle h. In this arrangement there may
be provided the openings 2, 3, into the furnace into which openings the fuel is
passed from the hoppers and on to the grate g. These openings may be pro-
vided with doors of any suitable construction and arrangement. In some cases
the generator may be heated by liquid fuel in which case the hoppers may be
dispensed with.
In some cases we lead the exhaust pipe of the engine, into the space between
the bye pass flue and the combustion chamber and we fit a three way cock k

page_text: provided with two outlet branches k¹, so that the blast is conducted into
either of the flues 61 or 3. The plug of the cock is fitted with an arm ³ which
is connected by a link k with the lever h so that the blast is conducted into either
flue synchronously with the opening of the damper therein.
The furnace door is shewn by g in the several figures.
The generator we employ is preferably of the water tube type and may be con-
structed in any well known and convenient form. At present we propose to use
a generator of the construction illustrated. In this generator a steam drum a¹ is
connected with a water, drum a2 or more than one by means of the zig zag
arrangement of pipes a having specially made elbows a. The casing of the
furnace and generator combustion chamber is preferably so constructed that
the top or one of the sides can be readily removed for the purpose of removing the
generator and cleaning and removal of parts.
By the arrangement of a bye-pass flue for conducting the hot gases directly
into the chimney when steam is not required as when the motor car is standing
or running down hill, the fuel, preferably coke is kept at a bright heat, so that
when the damper is reversed and the hot gases conducted round the boiler tubes,
the generation of steam is at once resumed to its full extent; and by passing the
hot gases through the boiler chamber at intervals while standing, the pressure
of the steam can be readily kept up without blowing off steam.
Having now particularly described and ascertained the nature of this said
invention and in what manner the same is to be performed we declare that what
we claim is:-
First. In apparatus for generating steam for motor vehicles the arrangement
and use of a bye pass flue leading from the furnace to the chimney, and damper
or dampers for alternately closing and opening the flues by which the draught
is directed either through the generator chamber or through the bye pass into the
chimney substantially as and for the purpose herein before described and
illustrated.
Second. In motor vehicles, the combination with a steam generator and furnace
of an additional flue leading from the furnace into the chimney and provided
with a damper or dampers by which the draught is directed round the generator
or through the bye pass formed by the additional flue substantially as described
and for the purpose set forth.
R. J. URQUHART,
57 Barton Arcade, Manchester, and 6, Clayton Square, Liverpool,
Consulting Engineer and Patent Agent.