Year: 1887

page_text: We, PIERRE JOSEPH RAVEL, of 73 Rue Pigalle, Engineer, and EUGENE
BREITTMAYER, of 20 Rue d'Aumale, Administrator, both of Paris France, do hereby
declare the nature of this invention to be as follows:-
Our invention relates to compression gas engines which perform one effective
piston stroke in every revolution of the engine, and to means for igniting the explosive
charges therein.
The said invention enables a greater power to be obtained with the same volume
than with gas. engines performing only one effective piston stroke in every two
revolutions.
It is to be understood that, in order to obtain this effect with a single cylinder,
it is necessary that compression shall take place in the front part of the said
cylinder.
In gas engines with or without compression the principal question to be solved
practically speaking is the distribution of the detonating mixture that is effected by
means of plane or cylindrical or other suitable slide valves.
Besides as gas engines have frequently to be placed in charge of inexperienced
persons it is rendered necessary to have a very simple engine so as to allow of the
parts being easily mounted and dismounted in order to keep all the said parts in
good order.
In order that the said invention may be well understood we have represented it by
way of example only in the accompanying drawing in which
Figure 1 is a side elevation of the engine showing the side where the distribution
takes place.
Figure 2 is an elevation of the side for the eduction.
Figure 3 is a general plan of the engine, the cylinder being shown in section.
Figure 4 is a transverse section on the line A B, CD, of Figures 1 and 3.
Figure 5 is a transverse section on the line E F, G H, of Figures 2 and 3.

page_text: Figures 6 and 7 are sections showing the distributing valves for the air and gas.
Similar letters of reference designate corresponding parts in all the Figures.
K is the engine cylinder, I. the cylinder piston, M is a chamber for the suction and
compression of the air; this chamber contains a valve a for the suction and a valve b
for the compression.
N is the eduction chamber which also contains a valve, O the gas pump, P the
chamber of the gas pump; which contains the suction valve c and the force valve d.
This chamber is in communication with the distributing chamber by means of a
pipe.
Qis the distributing chamber for the air and the gas, forming a detonating mixture
in their passage into this chamber which contains a valve e for the compressed air
coming from the reservoir of the rear part, and a valve for the compressed gas
coming from the chamber of the gas pump.
A grate u is designed to mix the air and gas before their entrance to the
cylinder.
R is the distributing cam actuating a rod
which terminates in a tappet g designed
to move the rods of the valves in the distributing chamber.
S is a cam actuating a rods that moves the eduction valve and also the valve a for
drawing in the air.
The rods for actuating these two valves are shown by broken
lines in the drawing.
T is the rear part mounted upon the cylinder bottom by means of bolts and nuts.
This rear part is composed of two portions cast in one piece. One portion is of
conical shape and constitutes the bottom of the cylinder; it is in communication with
the distributing chamber by means of a passage u.
The other portion t¹, of the rear part is made hollow and surrounds the conical part;
it is designed to form a reservoir for the compressed air coming from the chamber M.
This reservoir is in communication.
First with a valve d for the compression in the chamber M through the pipe d¹ and
the conduit d of cast iron in the casing of the cylinder.
Second. With the distributing chamber by means of the conduit e¹ of cast iron, in
the casing of the cylinder.
V is an electric battery known by the name of the Bréguet battery.
is a rod terminating in a link in which the continuation of the tappet of the
distributing apparatus moves.
is a lever actuated by the rod ; and designed to lift the insulated movable
rody which is maintained against the contact y' by means of a spring.
Vi is a lever actuating the armature V" which is operated by the magnet. X is a
cam actuating the said lever V1.
Y insulated wire connected with one end to the battery V and with the other in
contact with a movable rod y forming a magnetic pole and placed at the bottom of the
rear part.
Y point in direct contact with the machine and consequently representing the
second magnetic pole.
pis a box containing the valve for the ball governor. p is the starting cock
mounted upon the admission pipe for the gas.
The operation of the engine is as follows.
The piston L being at the end of its stroke, if an impulse is given to the fly wheel,
this piston will advance and compress the air contained in front of it in the cylinder.
The air. will pass through the valve band pass to the reservoir of the rear part.
This reservoir will then enclose air at a higher pressure than that of the atmosphere.
If continuing the impulse given to the fly wheel, the piston is caused to pass back, a
vacuum thereby tends to form in the front part of the cylinder, the atmospheric air
will pass through the suction valve a that will be open during the entire half of the
revolution. The piston having returned to its original position, that is to say to the
end of its stroke near the rear part, when the crank of the driving shaft passes its
dead point, the cam R actuating the distributing, apparatus will move the tappet g
upon the rod of the valves in the distributing chamber. The valve e for the air

page_text: will open first and will allow the passage of compressed air coming from the
reservoir of the rear part, then the valve for the gas will open and allow the
passage of the gas.
The air and gas will pass together through the valve e and will mix on passing
through the grate prior to passing through the conduit to the rear of the
cylinder. When the piston will have accomplished a small portion of its forward
stroke the space in the cylinder between the bottom of the conical portion of the rear
part and the piston will contain air and gas compressed and mixed, and also part of
the burnt gases caused by the previous explosion if the engine has already operated.
The volume of these burnt gases is equal to that represented by the conical portion of
the rear part because the piston cannot pass further backwards.
To roduce the volume of these burnt gases which are always prejudicial to a good
combustion, a small amount of lead can be given to the admission of the compressed
air, and consequently the closing of the eduction can be retarded. This arrangement
of the parts of the engine enables the said reduction, which is not absolutely necessary
to be realized.
At the moment when the necessary quantity of compressed air and gas forming the
detonating mixture is introduced into the cylinder behind the piston, the cam R of
the distributing apparatus lets the tappet g pass back, and consequently the valves in
the distributing chamber close. At this moment the detonating mixture must be
ignited. For this purpose either piles or Rhumkorff coils or the Breguet electric
apparatus can be employed.
In each case the sparks fly off in the same manner and at the same point. The rod h
is provided on one side with a link in which the continuation of the tappet g can
move; the other extremity of the rod actuates a lever I designed to lift the movable
rod y one extremity of which forms a magnetic pole. This movable rod is in contact
with a terminal receiving the insulated wire that is connected either with the piles or
with the Breguet apparatus.
The body of the engine being in communication with one of the poles of the piles,
or of the Breguet apparatus represented in Figure 1, it is understood that when the
tappet y of the distributing apparatus passes backwards, it strikes against the link k
of the rod, consequently abandons the second pole y' which is in contact
with the engine, the circuit is abruptly broken, and the spark flies between the
two poles.
This arrangement of a movable pole has for its object to render the spark that is to
ignite the detonating mixture more powerful, and there is moreover no danger of any
soilage as in the case of fixed poles; as will be seen from the accompanying drawings
the lighting of the detonating inixture is effected in the bottom of the conical portion
of the rear part, that is to say in the axis of the mass of the detonating mixture.
In the case of piles provided with one coil, it is sufficient that one of the wires shall
be in direct contact with the body of the engine which then represents one
of the conductors of the current, the other insulated wire must be in communication
with the movable rod y.
In case the Breguet apparatus is employed the arrangement is as follows:
The battery Vis composed of magnets connected with coils. From this battery
passes an insulated wire fixed to the terminal that is in contact with the movable rod y
serving as a pole. The armature V' is actuated by a lever V that can be provided
with a spring in order to obviate too sudden a shock. The lever V is actuated by
a cam mounted upon the driving shaft.
It is understood that the lever being mounted upon the frame of the engine,
and not being insulated, the magnetic current will exist in the entire engine that
will serve as a conductor for the pole y'.
When the armature V is applied against the battery V, a magnetic current is
established between the battery and the engine, but when the cam c strikes the
lever V, the armature is abruptly separated from the battery, and consequently the
magnetic current is interrupted.

page_text: Simultaneously the movable rod y, being actuated by the tappet of the distribution
apparatus, will break contact with the pole yl, the spark produced by the rapid rupture
of the current springs between the pile and lights the detonating mixtures.
The cam is keyed in such a manner that the spark is produced at the moment when
the tappet of the distributing apparatus allows the valves to be closed.
When the spark has ignited the detonating mixture, the piston performs its
forward stroke and presses before it the air which had been drawn in by the
preceding back ward stroke.
The piston having arrived at the end of its stroke, the cam of the eduction
apparatus acts upon the rods which, through the medium of the levers shown
in the accompanying drawings, opens the eduction valve and also the suction valve
for the air.
On passing backwards the piston compresses the burnt gases which escape into the
atmosphere in passing below the eduction valve. In short by its backward stroke
the piston drives out the burnt gases at the time that it draws in the air.
By its forward course determined by the combustion of the detonating mixture, the
piston compresses the air which is drawn in and drives it into the reservoir of the rear
part where it can escape by virtue of the elevation of the temperature of the sides of
the conic portion of the rear part. The gas pumps are thus distributed in the
cylinder under a higher pressure than that of the atmosphere.
The regularity of the motion of the engine is ensured by the addition of a governor,
preferably a ball governor the valve of which lets more or less gas pass to the pump,
according to the needs of the power developed.
We do not limit ourselves to the arrangements that we have above described, and we
reserve the right of varying in our improved gas compression engine the arrangement
of the various parts without changing the principle thereof.
Our motor can in fact be constructed as shown in Figures 8 and 9 in elevation, in
Figure 10 in longitudinal section, and in Figures 11 and 12 in transverse section on the
lines A B and C D, in which the suction and compression are effected in a box M that
contains two flap valves (Corliss system) placed one above the other. This air drawn in
from below, instead of being sent directly into the distributing box, is sont into a reser-
voir, through the conduit & which can be formed either in the frame of the engine or in
a separate reservoir if the dimensions of the engine do not permit the frame to be used
as a reservoir. From the reservoir the air is distributed in the cylinder K by means
of the valve e with which the door of the distributing apparatus is provided. The gas
likewise compressed by a special pump and is sent into an intermediate reservoir which
communicates with the distributing chamber, through the valve f. The rods of the two
valves e fare actuated by a lever connected with the distributing rod 1.
is
In this arrangement for the eduction, the front part of the cylinder is provided with
several orifices o, o which terminate in a circular conduit p. This conduit terminates
in the eduction chamber N, the valve of which is actuated by a lever moved by
the rods of the cam.
As shown in Figure 10, when the piston driven by the combustion of the detonating
mixture has traversed about of its forward stroke, the orifices 000 are uncovered
and set in communication with the burnt gases or residues from the combustion; at
this moment the eduction valve opens, and the burnt gases, the pressure of which
greatly exceeds that of the atmosphere, escape to the outside.
While these gases escape with a great velocity the detonating mixture is introduced
through the air and gas valves contained in the distributing chamber. The movement
of the valves is effected by the distributing cam.
The gas passes behind the air valve e in passing through a conduit which
terminates in a circular channel in which are fixed several small tubes ff the object
of which is to well divide the gas in order to facilitate its mixing with the compressed
air that passes through the pipe-and the conduite.
The detonating mixture is thus formed before it passes through the valve e which is
in direct communication with the rear part of the cylinder.

page_text: By reason of the arrangement of the eduction, the air and gas forming the detonating
mixture take the place previously occupied by the burnt gases in the cylinder. When
the piston has made about one third of its backward stroke, all the orifices (air gas
and eduction) are closed, and the piston accomplishing its backward stroke
compresses the detonating mixture.
When the piston is at the end of its stroke the detonating mixture is strongly
compressed, and the crank being in proximity to the dead point, an electric spark sets
fire to the detonating mixture. This spark is obtained by the above described
means through the medium of the lighter a placed near or in the distributing
chamber and near the valve e.
Dated this 25th day of November 1887
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicants.

page_text: We, PIERRE JOSEPH RAVEL, of 73 Rue Pigalle, Engineer and EUGENE BREITT
MAYER, of 20 Rue d'Aumale, Administrator, both of Paris, France do hereby declare
the nature of the said 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 compression gas engines which perform one effective
piston stroke in every revolution of the engine, and to means for igniting the explosive
charges therein.
The said invention enables a greater power to be obtained with the same volume
than with gas engines performing only one effective piston stroke in every two
revolutions.
It is to be understood that, in order to obtain this effect with a single cylinder, it
is necessary that compression shall take place in the front part of the said cylinder.
In gas engines with or without compression the principal question to be solved
practically speaking is the distribution of the detonating mixture that is effected by
means of plane or cylindrical or other suitable slide valves.
Moreover as gas engines have frequently to be placed in charge of inexperienced
persons, it is necessary to have a very simple engine so as to allow of the parts being
easily mounted and dismounted in order to keep all the said parts in good order.
In order that the said invention may be well understood, we have represented it by
way of example only in the accompanying drawings in which
Figure 1 is a side elevation of the engine showing the side where the distribution
takes place, and
Figure 1 is an end view of the same.
Figure 2 is an elevation of the opposite side to that shown in Figure 1.
Figure 3 is a general plan of the engine, some parts thereof being shown in
section.
Figure 4 is a longitudinal section of Figure 3.
Figure 5 is a transverse section through the air casing.
Figure 6 is a transverse section of the exhaust casing.
Figure 7 is a longitudinal section showing the valves for the distribution of the air
and gas.
Figures 8 and 9 are two transverse sections through the distributing box, showing
the admission of the air and the orifice for the introduction respectively.
Figures 10 and 10" shows in elevation and plan respectively an air pump which in
certain cases is separate from the motor.
Figures 11 and 11" represent in vertical section and elevation respectively, the
device for regulating the feed of the gas to the engine.
Figures 12 and 13 show respectively at the rear and in front of the piston, diagrams
relating to the introduction of the detonating mixture.
Figure 14 shows a diagram of the effective work produced.
Figures 15, 16 and 17 show other diagrams hereinafter referred to.
Figure 18 is a side elevation of the ignition device.

page_text: Similar letters of reference designate corresponding parts in all the Figures.
Kis the engine cylinder and L its piston. M is a chamber for the suction and
compression of the air; this chamber contains a valve a for the suction and a valve b
for the compression sce Figures 8 and 9. N is the eduction chamber which also
contains a valve see Figure 6. O is the gas pump, P the chamber of the gas pump
which contains the suction valve and the force valve. This chamber is in communi-
cation with the gas reservoir A which is itself in communication with a distributing
chamber by means of a pipe m.
Qis the distributing chamber for the air and the gas, forming a detonating
mixture in their passage into this chamber which contains a valve e for the
compressed air coming from the reservoir B of the rear part, and a valve f for the
compressed gas.
If desired a grate designed to mix the air and gas before their entrance into the
cylinder can be employed in this distributing chamber.
R is the distributing cam actuating a rod which terminates in a tappet g designed
to move the rods g₁g of the valves e f in the distributing chamber.
S is a cam actuating a rods that moves the valve a for drawing in the air.
Tis the rear part mounted upon the cylinder bottom by incans of bolts and nuts
(Figures 3 and 4). This rear part is composed of two portions cast, in one piece.
One portion t, is of conical shape, and constitutes the bottom of the cylinder; it is in
communication with the distributing chamber Q by means of a passage n, The other
portion of the rear part is made hollow and surrounds the conical part; it is
designed to form a reservoir for the compressed air coming through from the
chamber M. This reservoir is in communication :-
First. With a valve for the compression in the chamber M through the pipe d' of
cast iron in the casing of the cylinder.
Second. With the distributing chamber by means of the conduit e¹ of cast iron in
the casing of the cylinder.
The governor of the engine is represented in detail in Figures 11 and 11ª. This
governor has for its object to regulate the quantity of gas supplied for the engine,
which quantity can be varied according to the power required.
When the velocity of the engine is to be reduced, the spring 2 is caused to expand
by acting upon the screw 3, and when the velocity is to be increased this screw is
acted upon in the reverse direction.
This compression and expansion of the spring causes the balls, that actuate tho
rod 4 and therefore the valve 5 to turn substantially in the same plane for different
velocities and consequently the regularity is the same for these various velocities.
Upon the front part of the governor is mounted the electric commutator 1 which at
the desired moment causes the spark for igniting the mixture. This arrangement
being well known it is unnecessary to describe the same.
We will however say that either batteries and Rbumkorff coils or electric apparatus
known under the name of "Coup de Poing Bréquet" or "Bréquet apparatus" can be
used and in either case the spark leaps in the same manner and at the same point.
In case the Bréquet apparatus is used the arrangement is as follows;-
The battery V is composed of magnets connected with coils. From this battery
extends an insulated wire which is fixed to the terminal which is in contact with a
movable rod serving as a pole. The armature VI is actuated by the lever V2 which
can be provided with a spring V³ in order to obviate too abrupt a shock. This lever
is actuated by a cam z mounted upon the driving shaft.
It will be understood that as the lever is mounted upon the frame of the machine
and is not insulated, the electric current will exist in the entire mass of the machine
which will serve as a conductor.
The cam is keyed in such a manner that the spark is produced at the moment
when the tappet of the distributing gear allows the valves to close.
When the spark has ignited the detonating mixture, the piston makes its forward
stroke and forces before it the air which had been drawn in by the preceding back
stroke.

page_text: The engine operates in the following manner;
The piston L being at the end of its stroke (Figure 3) if an impulse is given to
the fly wheel, this piston will advance and compress the air contained in front of
it in the cylinder. The air will pass through the valve band pass to the reservoir t¹
in the rear part. This reservoir will then enclose air at a higher pressure than
that of the atmosphere. If continuing the impulse given to the fly wheel, the piston
is caused to pass back, it thereby tends to form a vacuum in the front part of the
cylinder, the atmospheric air will pass through the suction valve a that will be
open during the entire half of the revolution. The piston having returned to its
original position, that is to say to the end of its stroke near the rear part, when the
crank of the driving shaft passes its dead point, the cam R actuating the distributing
apparatus will move the tappet g upon the rod of the valves in the distributing
chamber. The valve e for the air will open first and will allow the passage of
compressed air coming through e¹ from the reservoir t' in the rear part, then the
valve for the gas will open and allow the passage of the gas.
The air and gas will pass together through the valve e and will mix before passing
through the conduit u to the rear of the cylinder. When the piston will have
accomplished a small portion of its forward stroke the space in the cylinder. between
the bottom of the conical portion of the rear part and the piston will contain air and
gas compressed and mixed and also part of the burnt gases caused by the previous
explosion if the engine has already operated. The volume of these burnt gases is
equal to that represented by the conical portion of the rear part because the piston
cannot pass further backwards.
To reduce the volume of these burnt gases which are always prejudicial to a good
combustion a small amount of lead can be given to the admission of the compressed
air, and consequently the closing of the eduction can be retarded. This arrangement
of the parts of the engine enables the said reduction, which is not absolutely necessary
to be realized.
At the moment when the necessary quantity of compressed air and gas forming
the detonating mixture is introduced into the cylinder behind the piston, the cam R
of the distributing apparatus lets the tappetpass back, and consequently the
valves in the distributing chamber close. At this moment the detonating mixture
must be ignited.
Referring to Figures 12 and 13 in which the arrows indicate the direction of the
movement, it will be seen that the front part of the piston, Figure 13, causes the
suction at A c B and the compression of the air at A a B.
The gas pump produces the same cycle.
When the engine piston returns to the rear (Figure 12,) that is to say from B to A,
it causes by its rear surface the expulsion of the burnt gases at Cd B. When it
arrives at the expulsion of the burnt gases is effected excepting however the volume
between the piston and bottom of the rear part. From C to A is an optional lead
upon the introduction of the detonating mixture. At C₁ fire is set to the detonating
mixture.
With these arrangements the diagram of the effective work indicated is represented
in Figure 14.
From A to B is the course of the piston. From A to a is the pressure representing
that caused by the compression of the detonating mixture in the space between the
piston and the bottom of the rear part.
bis the highest point of the curve that is to say, the maximum pressure produced
by the explosion. The gases expanding from b to B which is the end of the stroke
of the piston.
The piston having arrived at the end of its stroke the cam S Figure 2 of the eduction
apparatus acts upon the rod s which through the medium of the levers s¹, s" opens
the eduction valve and also the suction valve for the air.
On passing backwards, the piston presses the burnt gases which escape into the
atmosphere in passing below the eduction valve. In short, by its backward stroke
the piston drives out the burnt gases at the time that it draws in the air.

page_text: By its forward course determined by the combustion of the detonating mixture, the
piston compresses the air which is drawn in and drives it through into the
reservoir of the rear part where it can escape owing to high temperature of the sides
of the conic portion of the rear part. The air and gas are thus distributed in the
cylinder under a higher pressure than that of the atmosphere.
The regularity of the motion of the engine is ensured by the addition of the
governor Figures 11 and 11 a preferably a ball governor the valve of which lets more
or less gas pass to the pump, according to the needs of the power developed.
We do not limit ourselves to the arrangements that we have above described
and we reserve the right of varying in our improved gas compression engine the
arrangement of the various parts without changing the principle thereof.
For the eduction the front part of the cylinder is provided with several orifices ov
which terminate in a circular conduit p. This conduit terminates in the eduction
chamber N, the valve of which is actuated by a lever mechanism moved by the rod s
of the cam S Figure 2.
As shown in Figure 3 when the piston driven by the combustion of the detonating
mixture has traversed about of its forward stroke the orifices o, o, o are uncovered
and set in communication with the burnt gases or residues from the combustion;
at this movement the eduction valve opens and the burnt gases the pressure of which
greatly exceeds that of the atmosphere, escape to the outside.
While these gases escape with a great velocity, the detonating mixture is
introduced through the air valves e and gas valves contained in the distributing
chamber Q. The movement of the valves is effected by the distributing cam R
Figures 1 and 3.
The gas passes behind the air valve e in passing through a conduit a where it
mixes with the compressed air that passes through the pipe and the conduit c.
The detonating mixture is thus formed before it passes through the valve e which is
in direct communication with the rear part of the cylinder.
By reason of the arrangement of the eduction and the said rear part the air and gas
forming the detonating mixture take the place previously occupied by the burnt
gases in the cylinder. When the piston has made about one third of its backward
stroke, all the orifices (air, gas and eduction) are closed and the piston accomplishing
its backward stroke compresses the detonating mixture.
The conduit of the distributing chamber which terminates in the interior of the
rear part is not formed in the axis but below or above the same in order that this
conduit shall be eccentric, that is to say its axis shall not be at a right angle to the
walls of the cylinder.
This arrangement of the conduit determines a rotary movement in the introduction
of the detonating mixture into the cylinder which consequently does not mix much
with the burnt gases that pass towards the front of the cylinder.
The latter arrangement produces the cycle Figures 15 and 16; the gas pump
reproduces the same cycle as the front part of the piston.
The air and gas are compressed from A to I, Figure 15, to a pressure of about } of
an atmosphere, but they are separately conveyed to special reservoirs; from 1 to 2 is
the period of eduction for the burnt gases; from 3 to 4 the introduction of the
detonating mixture takes place.
In Figure 16 the period of compression for the air is effected at A CB and the
suction period at A, D, B.
This arrangement produces diagrams of the effective work as shown in Figure 17.
The compression of the detonating mixture is from 3 to 5 atmospheres.
When the piston is at the bottom of its course the detonating mixture is powerfully
compressed and the crank being in proximity to the dead point. an electric spark sets
fire to the detonating mixture. This spark is obtained by the means hereinbefore
described through the medium of an igniting device placed near or in the distributing
chamber and in proximity to the valve e.
It may happen that for the reason of limited space or for the purpose of obtaining

page_text: still greater effect it is necessary to separate the air pump which is naturally formed
by the front part of the piston and engine cylinder.
In this case the principle of the engine remains absolutely the same that is to say: com-
pression of the air and gas in separate reservoirs, and introduction of the air and gas
forming the detonating mixture at the rear of the engine cylinder whilst the gases
remaining from the previous combustion escape at the front part of the cylinder.
Figures 10 and 10 is an elevation and a plan respectively some part being in
section of this arrangement of the engine.
The engine cylinder K is open in front and its piston L is connected directly to the
crank of the driving shaft by a simple connecting rod:
The arrangements of the engine cylinder K as regards the eduction and distribution
of the detonating mixture are similar to those of the cylinder the front part of which
is closed, forming the bodies of air pumps and which are herein before described. In
this case the air pump K is composed of a cylinder which is open in front and the
piston of which is directly connected to the crank of the driving shaft by means of a
simple connecting rod.
At the rear of the cylinder is the chamber M containing a suction valve a and a
compression valve b.
The air drawn in at a is pressed through the pipe into a special reservoir 2 which
can be formed in the bed of the engine.
The gas pump is mounted on the side of the air pump; its plunger is connected
to the piston of the air pump the two pistons therefore perform the same stroke.
111
The gas drawn in, coming from the box p of the governor regulator through the
pipe p is forced through the pipe pill into a special reservoir 3 which can be formed
in the frame of the engine.
i.
The air reservoir 2 communicates with the distributing chamber
conduit 21.
through the
The gas reservoir 3 communicates with the distributing chamber Q through the pipe 4.
The eduction chamber N contains a valve actuated by the cam S.
The valves in the distributing chamber are operated by the cam R.
The operation in this arrangement of the engine being the same as that above
described, it is not necessary to describe it again, it is sufficient to observe that the
piston of the engine cylinder K receives the effect of an explosion of the detonating
mixture in every revolution of the engine.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is
First. A gas engine in which the air and gas serving to form the detonating
mixture are compressed separately in special reservoirs whence they are conveyed into
a chamber where they are mixed prior to their introduction into the cylinder; this
introduction being effected nearly at the moment of the eduction of the gases from the
preceding combustion and tangentially to the rear part of the cylinder, as above
described.
Second. The arrangement of the gas engine composed of the engine cylinder K,
combined with an air pump K', the gas pump o, the reservoirs 2 and 3, and a
governor at P: as above described with reference to figures 10 and 10" of the accom-
panying drawings.
Thaind this 54th dove of Awzuck 1000