An Improved Rotary Engine.
Year: 1896

page_text: Date of Application (in United Kingdom), 15th Sept., 1896.
Complete Specification Left, 8th June, 1897-Accepted, 10th July, 1897.
An Improved Rotary Engine.
We, GASTON MICHEL SCHMID, of 28, Rue Michelet, Pantin (Seine) Mechanical
Engineer, EUGENE JULES HENRI LESNE, of 10 Boulevard Montmartre, Paris,
Merchant, and ALFRED DEFLANDRE, of 78 Boulevard National, Vincennes (Seine),
all in the Republic of France, do hereby declare the nature of this invention
to be as follows:-
This invention relates to rotary motor engines of an improved construction
comprising cams, which act as points of support, and slide-valve expansion gear.
The improved motor, the construction of which is very simple upon the whole,
offers the advantage that it may be arranged in any position, that is to say, its
shaft may be placed horizontally, vertically, at an angle of 45 or at any inter-
mediate angle.
The invention will be best understood by reference to the accompanying
drawings, in which
Figure 1 represents the motor-arrangement referred to, being an end view
thereof, taken on the side where steam is admitted;
Figure 2 is a transverse section of the improved engine;
Figure 3 is an end view of the engine, showing the same on the steam outlet
side;
Figure 4 is a longitudinal section of the engine;
Figure 5 is a plan of the same;
Figure 6 is a side elevation thereof; and
Figure 7 is a section of the motor engine on line A B, Figure 2.
In the several figures like letters of reference designate like parts.
It will be seen from the drawings that our improved arrangement comprises a
cylinder a of peculiar shape, provided with a distributing or slide-valve bon each
side, wherein the following parts are located, viz. a species of balanced dis-
tributing-cam c, the steam inlet-port d and the steam outlet e.
The cylinder is closed at both ends by plates discs or covers f, through which the
driving shaft g extends, and each of which is fitted, besides, with a closing-ring,
or annular shutter, h, adapted to close the joints on the sides of the piston i.
These rings or hoops are balanced by a short extension whereby they are pressed
against the piston owing to the surface difference-under the action of the steam
admitted through the inlet ports j on both sides.

page_text: The piston, which is keyed or rigidly secured on to the driving shaft, has a
number of eccentric parts or inclines k formed on it, wherein there are arranged,
along the generatrix or outline of the piston, a series of shutters 1, pressed by the
steam and by springs m into contact with the cylinder, as illustrated by Figures 2
and 7 of the drawings.
The steam or other motive fluid or gas, as it enters through the ports d drives
the came against one of the inclines of the piston, and then passes through the
port provided in the said cam and thus comes to act upon the incline or abutment k.
The piston, in revolving, causes the cam to re-enter its chamber under the action
of its incline, and inasmuch as the port is thereby covered over, the steam now
acts by expansion.
The same process is repeated on the other side, except that the two cams are so
arranged that whilst one allows the steam to act at full pressure, the other causes
it to act by expansion.
The steam escapes through the exhaust ports e.
The driving shaft sustains no pressure or strain, being accurately balanced.
The shapes of the various parts, the details of construction, accessory parts,
materials and dimensions in our improved motor engine may obviously vary
without any departure from the principle of the invention.
Besides, if preferred, the cylinder may be adapted to revolve and the piston be
made stationary.
Dated this 15th day of Santom
1900
HASELTINE LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicants.
An Improved Rotary Engine.
We, GASTON MICHEL SCHMID, of 28, Rue Michelet, Pantin (Seine) Mechanical
Engineer, EUGENE JULES HENRI LESNE, of 10 Boulevard Montmartre, Paris,
Merchant, and ALFRED DEFLANDRE, of 78 Boulevard National, Vincennes (Seine),
all in the Republic of France, 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 to rotary motor engines of an improved construction
comprising cams, which act as points of support, and slide-valve expansion gear.
The improved motor, the construction of which is very simple upon the whole,
offers the advantage that it may be arranged in any position, that is to say, its
shaft may be placed horizontally, vertically, at an angle of 45 or at any inter-
mediate angle.
This invention will be best understood by reference to the drawings filed with
our Provisional Specification, in which
Figure 1 represents the motor-arrangement referred to, being an end view
thereof, taken on the side where steam is admitted;
Figure 2 is a transverse section of the improved engine;
Figure 3 is an end view of the engine, showing the same on the steam outlet
side;
Figure 4 is a longitudinal section of the engine;
Figure 5 is a plan of the same;
Figure 6 is a side elevation thereof; and
Figure 7 is a section of the motor engine on line A B, Figure 2.

page_text: In the several figures like letters of reference designate like parts.
It will be seen from the drawings that our improved arrangement comprises a
cylinder a of peculiar shape, provided with a distributing or slide-valve b on each
side, wherein the following parts are located, viz. a species of balanced dis-
tributing-cam c, the steam inlet-port d and the steam outlet c.
The cylinder is closed at both ends by plates discs or covers f, through which the
driving shaft y extends, and each of which is fitted, besides, with a closing-ring,
or annular shutter, h, adapted to close the joints on the sides of the piston i.
These rings or hoops are balanced by a short extension whereby they are pressed
against the piston owing to the surface difference-under the action of the steam
admitted through the inlet ports j on both sides.
The piston, which is keyed or rigidly secured on to the driving shaft, has a
number of eccentric parts or inclines k formed on it, wherein there are arranged,
along the generatrix or outline of the piston, a series of shutters, pressed by the
steam and by springs m into contact with the cylinder, as illustrated by Figures 2
and 7 of the drawings.
The steam or other motive fluid or gas, as it enters through the ports d drives
C against one of the inclines of the piston, and then passes through the
port provided in the said cam and thus comes to act upon the incline or abutment k.
The piston, in revolving, causes the cam to re-enter its chamber under the action
of its incline, and inasmuch as the port n is thereby covered over, the steam now
acts by expansion.
The same process is repeated on the other side, except that the two cams are so
arranged that whilst one allows the steam to act at full pressure, the other causes
it to act by expansion.
The steam escapes through the exhaust ports e.
The driving shaft sustains no pressure or strain being accurately balanced.
The shapes of the various parts, the details of construction, accessory parts,
materials and dimensions in our improved motor engine may obviously vary
without any departure from the principle of the invention.
Besides, if preferred, the cylinder may be adapted to revolve and the piston be
made stationary.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:
An improved rotary motor engine the main feature of which is a piston i of
peculiar construction, rigidly secured to the shaft g and provided with eccentric
portions and shutters and h, in combination with distributing cams e, which are
so balanced and arranged as to first allow the steam to act at full pressure, and
then, during part of the stroke, enable it to expand, all substantially as herein-
before described and illustrated in the drawings.
HASELTINE LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicants.