Year: 1897

page_text: .Date of Application, 14th Dec., 1897
Completo Snanification Latt 10th Sont 1000
Ancantad
20th Out
1000
A communication from CHARLES DUSAULX, of Xirocourt, Canton d'Haroue (Dept.
Meurthe and Moselle), France, Engineer.
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 carburettors for oil-motors, in which the explosive
mixture drawn in by the piston of the motor, is formed of air and finely divided
liquid oil. This is effected by guiding the oil coming from the reservoir, to a
capillary surface or perforated plate made of rattan or any other suitable material
and by causing a portion of the quantity of air required to form the explosive
mixture to pass through said plate. The air passing through the holes of the
plate or in contact with the surface upon which the oil is sprayed carries with it
the particles of oil with which said plate is impregnated and thus reaches the com-
pression chamber saturated with liquid oil in molecular state.
A capillary plate made of rattan or any other material adapted to give similar
results as regards capillarity is arranged in the carburetting chamber of the
motor. The oil entering through a pipe flows into the chamber in which the
plate is arranged through an orifice or nozzle the cross-section of which preferably
depends on the power of the motor. The oil falls on to the plate and fills the
upper part of the holes of said plate. The air required to form the explosive
mixture is supplied through a pipe having two branches. By means of one
branch the air drawn in during the stroke of the piston of the motor is led under
the plate and passes through the capillary holes of this plate and carries with
it the oil-molecules therein and thus arrives at the compression or explosion
chamber saturated with oil in the state of fine division.
The plate is sufficiently thick to offer a certain resistance to the passage of air
so that only a portion of the air necessary to form the explosive mixture passes
through the plate the other portion being delivered into the compression chamber
directly through the other air supply branch, said branch being closed by means
of a spring-valve which opens only as far as the difference of pressures in the
compression-chamber and branch is greater than the tension of the spring of the
valve. By increasing or reducing said tension by means of the nut, the proportion
of air passing over and under the plate and consequently the degree of carbura-
tion of the explosive mixture can be regulated according to the work required.
As the proportion of oil in the explosive mixture must be capable of being
regulated according to the variations of the working of the motor, the herein-
before described device for regulating the admission of air may be combined
with a device for automatically regulating the supply of oil. The pipe supplying
oil from the reservoir enters an intermediate passage or conduit which is also in
communication with the pipe supplying oil to the carburetter. This passage is
filled with mercury up to a desired level, the mercury being supplied from a bulb
made of some elastic material. On this bulb presses the end of a bell-crank lever
pivoted at the other end to a ring mounted loosely on a shaft actuated by the

page_text: driving shaft of the motor. On the ring rests a helically wound tube filled with
mercury and secured to the shaft. According as the speed of the motor varies and
under the influence of centrifugal force the helical tube expands more or less
carrying the ring and moves the lever which thereupon presses against the bulb
and causes the level of the mercury in the conduit to rise or fall thus regulating
the cross-sectional area of the passage of oil in this conduit.
The carburetter is thus provided with two combined regulating devices. One
of them by means of a valve regulates the quantity of air supplied to the explosive
mixture to obtain a certain power of the motor, the other owing to the action of
the helical tube on an elastic mercury bulb serves to regulate the consumption of
oil according to the variations of the work of the motor.. 1
Dated this 14th day of December 1897
Improvements in or relating to Carburettors for Oil-motors.
A communication from CHARLES DUSAULX, of Xirocourt, Canton d'Haroue (Dept.
Meurthe and Moselle), France, Engineer.
I, ALFRED JULIUS BOULT, of 111, Hatton Garden, 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 ascer-
tained in and by the following statement:-
This invention relates to carburettors for oil-motors, in which the explosive
mixture is drawn in by the piston of the motor, is formed of air and finely divided
liquid oil. This is effected by guiding the oil coming from the reservoir, to a
capillary surface or perforated plate made of rattan or any other suitable material
and by causing a portion of the quantity of air required to form the explosive
mixture to pass through said plate. The air passing through the holes of the
plate or in contact with the surface upon which the oil is sprayed carries with it
the particles of oil with which said plate is impregnated and thus reaches the com-
pression-chamber saturated with liquid oil in molecular state:
The accompanying drawing illustrates, by way of example, in sectional elevation
a carburettor according to the present invention provided with a capillary plate
and with a device for regulating the air- and oil-supply.
A is a capillary plate made of rattan or any other material adapted to give
similar results as regards capillarity. The oil entering through a pipe B blows
into a chamber C in which the plate A is arranged, through an orifice or nozzle D,
the cross-section of which preferably depends on the power of the motor. The oil
falls on to the plate A and fills the upper part of the holes of said plate. The
air required to form the explosive mixture is supplied through a pipe having
two branches E and F. By means of the branch E the air drawn in during the
stroke of the piston of the motor is led under the plate A and passes through the
capillary holes of this plate and carries with it the oil-molecules therein and thus
arrives at the compression or explosion chamber saturated with oil in a state of
fine division.
The plate A is sufficiently thick to offer a certain resistance to the passage of the
air so that only a portion of the air, necessary to form the explosive mixture,
passes through the plate, the other portion being delivered into the compression
chamber directly through the branch F, said branch being closed by means of a
spring-valve G, which opens only when and so far as the difference between the
pressures in the compression-chamber and branch F is greater than the tension

page_text: of the spring H of the valve. By increasing or reducing said tension by means
of the nut K, the proportion of air passing over and under the plate A and con-
sequently the degree of carburation of the explosive mixture can be regulated
according to the work required to be done.
As the proportion of oil in the explosive mixture must be capable of being
regulated according to the variations of the working of the motor, the herein-
before described device for regulating the admission of air may be combined with
a device or governor for automatically regulating the supply of oil. The pipe M,
supplying oil from the reservoir enters an intermediate passage or conduit N
which is also in communication with the pipe B supplying oil to the carburettor.
This passage N is filled with mercury up to a desired level, the mercury being
supplied from a bulb P, made of some elastic material. The bulb P is in contact
with the free end of one arm of a bell-crank lever R the free end of the other arm
of the lever being pivotted to a ring S mounted loosely on a shaft T, actuated by
the driving shaft of the motor. Against the ring S rests one end of a helically
wound tube V filled with mercury and secured to the shaft T. According as the
speed of the motor varies, and under the influence of centrifugal force, the helical
tube V, expands more or less moving the ring S and through it
the lever R which thereupon presses against the elastic bulb P and
causes the level of the mercury in the conduit N to rise or fall, thus regulating
the cross-sectional area of the passage of oil in this conduit.
The carburettor is thus provided with two combined regulating devices. One
of them by means of a valve regulates the quantity of air supplied to the explosive
mixture to obtain a certain power of the motor, the other owing to the action of
the helical tube on an elastic mercury bulb, serves to regulate the consumption of
oil according to the variations of the work of the motor."
Having now particularly described and ascertained the nature of the said inven-
tion as communicated to me by my foreign correspondent and in what manner
the same is to be performed, I declare that what I claim is:-
1. A carburettor for a motor working with oil or similar liquids, characterised
by a capillary plate on which the oil spreads in a thin layer and through which
passes a portion of the air required to form an explosive mixture substantially
as described.
2. In a carburettor such as is claimed in Claim 1, a spring-valve arranged
substantially as described for regulating the proportion of air passing over and
through the capillary plate according to the power to be developed by the motor.
3. In a carburettor such as is claimed in Claim 1 automatically regulating the
admission of oil by the enlargement or construction of the cross section of the
admission port by means of a liquid such as mercury under control of a governor.
4. In a carburettor such as is claimed in Claim 1, a governor comprising a
rotating helical tube filled with mercury, this tube expanding more or less under
the action of centrifugal force and acting on an elastic pocket containing the
regulating liquid, whereby the area of the passage for the oil in the admission
pipe is varied.
5. The carburettor substantially as described or illustrated in the accompanying
drawings.
Dal
1941 dor of Cantorbor 1808
BOULT & WADE,
Agents for the Applicant.