Year: 1886

page_text: Date of Application, 11th Sept., 1886.
Complete Left, 11th July, 1887.
Complete Accepted, 16th Aug., 1887.
I, ALFRED JULIUS BOULT of 323 High Holborn, in the County of Middlesex,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention refers to a double action oscillating gas engine which produces its
own gas
and compresses it before introducing it into the cylinder.
The engine consists of a carburator; an oscillating, exhausting double action force
pump for carburetted air; a double action oscillating cylinder; an electric apparatus,
and a transmission shaft with fly wheels.
The carburator is in form of a box, suspended from the frame and contains three
compartments, the lower one of which holds the carburating liquid, it is of prismatic
form with a rectangular base and is on one side provided with a feeding funnel;
it is subdivided into small transverse compartments and in consequence carburating
liquid will be at the bottom of each of these transverse compartments even if the
carburator is in an inclined position. The second compartment above this one
and communicates with the lower one along the longer sides; in this compartment
a suitable number of wicks are arranged parallel to the bottom and equidistant
from each other, they are of the same width as the compartment, but so long
that they bend at the ends and reach down into the carburating liquid which they
will soak up. The lower wick is supported by vertical ribs and the upper ones by
ribs or tubes. The ribs are not quite so long as the wick and the tubes are flattened a
little in places and the wicks themselves leave small openings for the communication
between the different compartments. The lower compartment is in connection with
the air and the upper one is connected with pump. The third compartment of the
carbonator completely encircles the former two and the tubes supporting the wicks
into this third compartment which is furthermore provided with an opening and being
in connection with the exhaust of the cylinder, it is essentially the exhaust pipe of the
cylinder, and will therefore warm the outer walls of the compartments of the carburator
and thus facilitate volatilization therein.
open

page_text: The carburetted air pump oscillates on the same axis as the cylinder, it is an exhaust
and force pump of double action, it exhausts through one of its trunnions and fills
through the other which is also the trunnion of the cylinder. The movement of the
slides which are provided with ports is dependent on the oscillating movement of the
body of the pump and is identical with the movement of the piston, and continuous
with the exception of the two dead points. The pump is in connection with the upper
compartment of the carburator and pumps and compresses the carburetted air into the
reservoir encircling the cylinder.
The cylinder is oscillating and double acting, it is provided with a casing forming
a reservoir into which the carburetted air is forced by the pump and from which the
cylinder is fed. The cylinder is also provided with a conduit which encircles it and
through which the carburetted air has to pass before it reaches the slide valves; it is
also provided with projecting circular ribs or wings. In this manner the carburetted
air is warmed and the cylinder cooled. Through the cylinder covers pass the electrical
wires which emit the spark and so cause the explosion at the desired moment.
The valves, which are attached to the frame by two movable bent arms on the same
spindle one of which is operated and held by a spring against a cam wheel arranged
on the transmission shaft in such a manner that when the piston of the cylinder is at
one of its dead points the cam will begin to act and the valves will be opened
sufficiently to let a sufficient quantity of the carburetted air enter the cylinder.
The exhaust is effected by the aid of valves arranged in the cylinder cover; these
valves being operated by a balance beam movable in the middle on an axis fixed to the
cylinder. One end of this beam is held upwards by a spring fixed to the cylinder,
the other end of the beam is attached to a spur piece operated by and held against a
roller fixed to the frame; the spur piece, being provided with a sort of cam, and
attached to the valves, will when the cam passes the roller make a movement to
open one and to close the other of the valves. In this manner none of the burnt
gas remains to mix with the carburetted air which will enter again.
The transmission shaft has a double crank in the same plane and of the same
radius which give a simultaneous and identical movement to the cylinder and the
pump. It is provided with one or more pullies for the transmission of the force.
Dated this 11th day of September 1886.

page_text: A communication from VITOLD DE NYDPRÜCK, Gentleman, and JULES D'HEYNE,
Engineer, both of Brussels, Belgium.
I, ALFRED JULIUS BOULT of 323 High Holborn, in the County of Middlesex,
M.I.M.E. 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 :-
The present invention relates to a double action oscillating gas engine which produces
its own gas and compresses the same before introducing it into the cylinder.
The engine consists essentially of a carburettor ; an oscillating, exhausting double
action force pump, for carburetted air and a double action oscillating cylinder in which
the explosion of the compressed gas takes place.
In the accompanying drawings
Figure 1 represents a side elevation of the engine.
Figure 2 is a vertical cross section on the line A a b B of Figure 1.
Figure 3 is a vertical section on the line D d c C of Figure 2.
Figure 4 is a horizontal section of the carburettor.
In addition to the above enumerated parts the frame B¹ carries a two throw crank
transmission shaft A¹.
The carburettor is in form of a box suspended from the frame B¹ and contains three
compartments c¹ e² c³ the lower one of which c¹ holds the carburetting liquid; this
latter is of prismatic form with a rectangular base having longitudinal ribs perpen-
dicular to the oscillation axis of the cylinder. This compartment c¹ is further
subdivided into small transverse compartments so that the carburetting liquid will be
distributed over the whole bottom of the compartiment even in case the carburettor
should be in an inclined position.
The second compartment c² is arranged above this one and communicates with the
lower one by openings extending the whole length of its longer sides. In this com-
partment a suitable number of wicks m² m² and m³ are arranged parallel to the
bottom and equidistant from each other; they are of the same width as the
compartment but so long that they bend at the ends and reach down into
the carburetting liquid which they will soak up. The lower wick is supported by
vertical ribs and the upper ones by the horizontal ribs 12 and the tubes t¹ the
diameter of which is smaller than the distance between two juxtaposed wicks. The
wicks which form subdivision in the compartment c² are joined to each other bystrips
of similar material n¹ and convenient openings being formed between the subdivisions
the whole will represent a continuous passage the walls of which are formed by the
wicks saturated by the carburetting liquid.
The third compartment c³ of the carburettor completely encircles the lower sub-
divisions of the compartment c² the tubes t¹ supporting the wicks opening into the

page_text: compartment and the latter being in connection with the exhaust pipe of the cylinder
these tubes and the walls of the compartment c² will be warmed to facilitate
volatilization in the latter.
The lower subdivision of compartment c² is in connection with the outer air and the
upper one with the pump so that the air to be carburetted does not come in contact
with the carburetting liquid but passes between the saturated wicks.
P¹ is a double action exhaust and force pump surrounded by an envelope which
forms a reservoir m for the compressed carburetted air; the pump is oscillating and
is worked by the two throw crank shaft A'.
C is an oscillating double action cylinder of the well known type in which a suitable
electric arrangement ignites the charge coming from the reservoir m by a spark at the
desired moment at cach stroke of the piston.
The passage in the trunnion of the cylinder is elongated and forms a continuation
of that in the trunnion of the pump although the two cranks of the transmission
shaft A stand at an angle to each other; the value of the angle being according to
the requirements for a good distribution of the resistances of the pump.
The compartment C₁ of the carburettor being provided with a sufficient quantity of
carburetting liquid, the wicks and strips will be saturated with this liquid the volatility
of which is greatly increased by the warming of the carburettor.
By the action of the pump atmospheric air is drawn in through the carburettor and
is carburetted by coming into contact with the saturated wicks and then pumped into
the reservoir under a suitable predetermined pressure from which reservoir it passes
into the cylinder through two valves which open alternately after every dead point
and close after having admitted the desired quantity; at this point the charge
ignited and drives the piston to the other dead point to recommence the same
operation.
It is to be understood that the engine may be constructed of any size or material
also that the carburettor may be heated by any other suitable or convenient means,
that the carburettor may be omitted altogether and the cylinder charged with an
explosive gas not produced by the engine itself and also that the cylinder may be
cooled by the aid of wings or ventilation or a current of water without deviating from
the principle of the invention.
Having now particularly described and ascertained the nature of the said invention
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. The complete apparatus as described in the above specification and represented
in the accompanying drawings.
2. In a gas engine as described above the carburettor containing wicks and strips
saturated with the carburetting liquid aud forming the passages for the air to be
carburetted and drawn into the pump; the disposition of the reservoir for the
carburetting liquid, preventing the air from coming into direct contact with the
liquid and the multitubular heating arrangement substantially as and for the purpose
specified.
3. In a gas engine such as described the oscillating double action cylinder in which
is ignited and explodes the compressed gas produced by the engine itself substantially
as specified.