Year: 1895

page_text: Date of Application, 19th Oct., 1895-Accepted, 11th Jan., 1896
We CHARLES GAUTIER and XAVIER WEHRLE both of 29 Rue St. Didier,
Paris, 10 the Republic of Fiance, Constructors, 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 rotary engine and is shown in the annexed
drawings which represent in :-
Fig. 1 a vertical section on lines e-f of Fig. 2
Fig. 2 a horizontal section on lines c-d of Fig. 1
Fig. 3 a vertical section on lines - of Fig. 4 of two engines coupled.
Fig. 4 a longitudinal section on lines g-h of Fig. 3 of two engines.coupled.
In a cylindrical casing perfectly closed and turned in the interior, composed of
two ends B C and of a cylindrical body A, connected by bolts, is a shaft E, the
axis of which coincides with that of the case. This shaft traverses the two ends in
bearings which, to prevent escape, may be fitted with stuffing boxes on with hollow,
grooves made in the metal.
The shaft itself, where smooth bearings are used may also be made with circular
grooves to prevent escape. These grooves made either in the shaft or in the
bearing may be fitted with elastic segments in one or more pieces behind which,
may come the pressure of the motor fluid in the case of a motor engine, or of the
compressed fluid in the case of a suction and force pump.
On the cential shaft E is solidly fixed, keyed, bolted or screwed a cylindrical
eccentric picce D of a diameter at least equal if not superior to the interior radius
of the case together with that of the shaft.
This cylindrical piece (or its sliding block F) is always tangent to the interior
cylindrical surface of the case against which it exercises a constant friction at the
tangent line by a sliding block F with elastic pressure.
This sliding block placed on the touching line of the two cylindrical surfaces may
be pressed against the interior of the casing either by one or more springs or by
the pressure of the motor fluid or of the compressed fluid which arives by the
passages K. K.
The two plane faces of the cylindrical piece D rub constantly against the plane
surfaces of the two ends of the casing To render the contact of these two faces
completely hermetical, there may be made in the plaue faces of the movable
cylinder one or more concentric grooves a, and if necessary, they may be fitted
with adjusted rings behind which either springs may be placed or the pressure of
A recess is made in the
the motive or compressed fluid may be directed thither
interior cylindrical sui face of the case, such as the recess which is exactly filled
by an adjusted piece G of hard bronze, the intério face of which piece has the
same curvature as the interior sui face of the cylindrical case A.
This piece G may pivot in the extremity Crounded for this purpose, of the
groove b. It has the exact width of the interior of the casing against the end
faces of which it rubs by means of adjusted sliding blocks or segments behind
which there are springs or other motive power, or the pressure of the compressed
Bund, this piece separates therefore constantly and in an absolute manner the space
Behind it,
where the admission takes place froin that where the exhaust occurs.
in the middle of the groove, and pierced in the side of the cylindrical case A
15, the port H for adinitting the motive pressure in the case of a motor, or for the
escape of the compressed fluid, in the case of a pump.
.

page_text: As much as possible the section of this porthole will have to be round, of conical
form like the seat of a valve so that a round and conical projection being part of
the piece G, will close the hole hermetically each time the picce G will be fitted
into its groove by the passage of the eccentric piston D.
1D consequence of this disposition the pressure which is in the port, if there is
any, cannot, when the piece is in its place, act on all the surface of the latter
before the sliding block F of the eccentric piston has left it.
As soon as the eccentric piston does not press any longer on the piece G, the
latter, pushed by the pression behind it, will leave the position where it formed tho
continuation of the cylindrical part of the case and will turn with its one end
against the turning eccentric piston and with the other in the cylindrical groove
which is at its other extremity.
Under these conditions no serious escape is possible. The piece G 18 so to say
pressed in the successive positions which it has to assume in following the piston.
On the side of the joint it is directed by the pressure in its cucular groove.
Finally should the unlikely event happen that it is drawn out through adhesion to
'the piston a small pin in the centre of the joint and traversing the two end covers,
will render such movement quite impossible.
On the face of the inovable piston the turning of the end of the piece G
will be done in a manner, which will become moro perfect in the course of its
working.
As regards the exhaust port in the case of a motor, or the suction port in tho
case of a pump, it is constituted by the passage I in the side of the cylindrical
casing forming the cover of the apparatus, near to the groove prepared for the
piece G.
It results from this arrangement that the admission may take place at will
continually during at least of the revolution of the eccentric piston.
In the case of a steam motor it will be extremely easy to obtain the expansion
desired by closing the admission at any given moment by a valve or the like
actuated either by an eccentric or by a cam fixed on the shaft.
The exhaust will be absolutely free if desued during the 13th of the piston
revolutions.
It may be understood from the foregoing description that this rotary engine may
be used not only as a pump or motor acting by the influence of steam or of a
compressed fluid either gazeous or liquid, but it is also a perfect gas or petroleum-
gas motor.
It is generally known that in all gas-motors whatever the source whence the gas
is derived the mixture must be compressed in the cylinder of the motor with a force
of 2, 3 or 4 atmospheres before explosion takes place. After the explosion takes
place expansion should be produced as argely and as rapidly as possible.
The exhaust may be effected after this with the greatest possible facility by
carrying to the open air all the consɩized gas.
Now it is easy to perceive that in fixing two of these rotary engines L N side by
side on the sume shaft, as is shown in Figs. 3 and 4, the one acting as motor and
the other as suction and force pump, the problem is completely solved without
additional cams on valves whatever.
any
In examining this cycle, choosing for instance the moment when the piston of
the motor being yet on the piece G the piston of the pump will suck in the mixture
on one side and on the other compress it more and more into a space which
continues always to diminish.
5
As soon as the piston of the motor leaves its piece G free, the latter will be lifted
and permits the mixture to enter. It is therefore sufficient to arrange for the
heimetic closing of the piece G of the pump, as soon as the quantity of mixture
compressed will be found sufficient. Then the light is applied and the motor
leceives its impulse during at least of a turn whilst the escape takes place freely. 5
The motor cylinder L is fitted with small heat radiating iibs or with a water
circulation. M is the electric lighting device.

page_text: To obtain perfect security we fit metallic cloth between the force port of the
pump N and the admission port of the motor to prevent all chances of undesired
explosion passing to the pump chamber.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:-
In a rotary engine.
1. An hermetical cylindrical and eccentric piston having a constant friction
through the same cause against the interior Bides of the cylindrical case which
constitutes the apparatus. The axis of this eccentric piston being parallel to that
of 1otation of the system and its diameter larger than the sum of the interior radius
of the case and that of the main shaft to which it is invariably fixed.
2. The means for obtaining tightness between the cylindrical surface of the case
and the contact line of the cylindrical piston, consisting of a lath occupying the
whole width of the case and actuated either by springs or hy the strongest pressure
pievailing in the apparatus.
3 The means for obtaining tightness between the plane ends of the movable
eccentric piston and the plane faces of the ends of the case consisting of two or
more concentric friction rings on the ends of the movable piston and pressed against
the plane faces of the case either by springs or by the greatest pressure prevailing
In the apparatus.
4. The meaus for obtaining tightness of the socket of the shaft in the case,
consisting of packing held in circular grooves in the shaft or in the sockets with or
without the use of segments in one or more pieces pushed back by the greatest
pressure prevailing in the apparatus or by appropriate springs.
5 The palette or valve piece G the interior of which has the same curvature as
the interior of the case said valve being placed in the side of the case and disposed
to receive underneath at the greatest pressure prevailing in the apparatus whereby
it is caused to abut against the eccentric piston in its movement of 1otation and to
separate completely the place where the greatest pressure is exercised from the
place where the pressure is weakest, this same valve fulfilling its function
automatically and without springs and being packed at its ends against the
cylinder heads by segments actuated either by springs or by the greatest pressure
pievailing in the apparatus.
6. The combination and arrangement of the parts mentioned hereinbefore as
shown in the drawings, seiving either as suction and force pump or as motor
under the action of any fluid under pressure or either as gas or petroleum
motor.
The two
7. For the use of the apparatus as petroleum or gas motor the combination of
two rotary engines fixed on the same axis with oppositely directed eccentric pistons
the one serving as force pump, and the other as explosive motor.
apparatus being connected by a tube pipe containing metal cloth screens to
prevent the explosion from passing to the pump.
Dated this 19th day of October 1895.
HERBERT HADDAN & Co.,
18 Buckingham Street, Strand, W.C, Agents to the Applicants.