Year: 1886

page_text: Date of Application, 10th June, 1886.
Complete Left, 10th Mar., 1887.
Complete Accepted, 15th Apr., 1887.
[Communicated from abroad by CLAUDE EDMOND ROMANET, of 1, Boulevard
St. Denis, Paris, France, Mechanician.]
I JOHN CLAYTON MEWBURN of 169 Fleet Street, in the City of London, Fellow of
the Institute of Patent Agents do hereby declare the nature of this invention to be
as follows:
The rotary engine which forms the subject of this invention is composed essentially
of:-
1. Two circular dises or drums in contact with each other at their periphery; these
Two toothed
discs or drums rotate together in a double cylinder of larger diameter.
wheels, equal in size to the drums, are mounted on their shafts outside the cylinder
and prevent slip.
2. Single or double blocks hinged to the drums at or near the periphery of the latter
and capable of moving either inwards, so as to be flush with the drums, or outwards,
so as to bear against the walls of the cylinder; they receive at their ends the thrust or
force of the motive fluid when they project beyond the drums and thus act as pistons;
they are placed symmetrically on the two discs so that the axes of their hinges are at
the same time in the plane of the shafts of the drums opposite the point of contact.
For a non-reversing engine the blocks or pistons will be single, and for a reversing
engine double.
3. Small channels or chases in the faces of the drums and on the inside of the
cylinder ends or covers; these channels form communication between the inner part
of the blocks and the induction port, or in the case of a reversing engine between the
inner part of the blocks and the induction or eduction port, as the case may be. The
object of these channels is to ensure that the blocks shall move out or in at the proper
time.
When the engine is a reversing engine the reversal can
moving a slide or a four-way cock provided for the purpose.
port is changed into the eduction port and vice versa.
be effected by simply
In short the induction

page_text: In order to diminish the friction of the ends of the blocks against the walls of the
cylinder there are small projections or shoulders on the hinges to limit the outward
movement of the blocks. The same result can be obtained by indents on the blocks
coming against shoulders or projections on the drums. These indents have the
further advantage of increasing the active surface of the inner face of the blocks.
When the blocks are double for a reversing engine, they can be in a single piece or in
two parts according to the nature of the motive fluid.
In order to render the arrangement very economical when steam is employed,
several cylinders can be combined on the compound principle the drums being keyed
on the same shafts, and they are so arranged that the induction of the second engine
is in connection with the eduction of the first, and the induction of the third with the
eduction of the second. The sizes of the drums and cylinders will increase so as to
allow of expansion as great as may be thought desirable.
The great speeds which can be obtained in a small space and weight renders this
engine very suitable for dynamo-electric machines and for the propulsion of small
vessels at great speed.
The improved engine can be made with a single motor drum or disc; in this case
the second drum will not have the blocks or pistons; it will be of smaller diameter
and will only serve as an obturator between the induction and eduction ports.
The characteristic features of this improved rotary engine are the two drums or
dises in contact and turning the one against the other without friction; the single or
double blocks or pistons hinged to the drums and receiving the force or thrust of the
motive fluid, these blocks or pistons having shoulders or projections to limit their
outward movement; and the small channels or chases for automatically ensuring the
outward movement of the blocks when this is necessary for the working of the
apparatus.
Dated this 10th d
T....
1000

page_text: St. Denis, Paris, France, Mechanician.
I JOHN CLAYTON MEWBURN, of 169 Fleet Street, in the City of London, Fellow of
the Institute of Patent Agents 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 rotary engine which forms the subject of this invention is composed essentially
of :-
1. Two circular dises or drums D and D¹ (see Figures 1 and 2 of the annexed
drawings) in contact with each other at their periphery; these discs or drums rotate
together in a double cylinder of larger diameter. Two toothed wheels equal in size to
the drums are mounted on their shafts outside the cylinder and prevent slip.
2. Single blocks a, a, Figure 1, or double blocks a¹ a¹, Figure 2, hinged to the
drums at or near the periphery of the latter and capable of moving either inwards so
as to be flush with the drums or outwards so as to bear against the walls of the
cylinder, they receive at their ends the thrust or force of the motive fluid when they
project beyond the drums and thus act as pistons; they are placed symmetrically on
the two dises so that the axes of their hinges are at the same time in the plane of the
shafts of the drums opposite the point of contact. For a non-reversing engine the
blocks or pistons will be single, as in Figure 1, and for a reversing engine double, as
in Figure 2.
3. Small channels or chases c, c in the faces of the drums and on the inside of the
cylinder ends or covers these channels form communication between the inner part
of the blocks and the induction port; or in the case of a reversing engine between the
inner part of the blocks and the induction or eduction port as the case may be. The
object of these channels is to ensure that the blocks shall move out or in at the proper
time.
When the engine is a reversing engine the reversal can be effected by simply
moving a slide or a four-way cock provided for the purpose. In short the induction
port is changed into the eduction port and vice versa.
In order to diminish the friction of the ends of the blocks against the walls of the
cylinder there are small projections or shoulders t, t on the hinges to limit the outward
movement of the blocks. The same result can be obtained by indents d d' on the
blocks coming against shoulders or projections e e¹ on the drums. These indents have
the further advantage of increasing the active surface of the inner face of the blocks.
When the blocks are double for a reversing engine they can be in a single piece or in
two parts according to the nature of the motive fluid.

page_text: In order to render the arrangement very economical when steam is employed
several cylinders can be combined on the compound principle the drums being keyed
on the same shafts and they are so arranged that the induction of the second engine is
in connection with the eduction of the first and the induction of the third with the
eduction of the second. The sizes of the drums and cylinders will increase so as to
allow of as much expansion as may be thought desirable.
The great speeds which can be obtained in a small space and weight render this
engine very suitable for dynamo-electric machines and for the propulsion of small
vessels at great speed.
The improved engine can be made with a single motor-drum or dise; in this case
the second drum will not have the blocks or pistons; it will be of smaller diameter
and will only serve as an obturator between the induction and eduction ports.
The characteristic features of this improved rotary engine are the two drums or
discs in contact and turning the one against the other without friction; the single or
double blocks or pistons hinged to the drums and receiving the force or thrust of the
motive fluid, these blocks or pistons having shoulders or projections to limit their
outward movement; and the small channels or chases for automatically ensuring the
outward movement of the blocks when this is necessary for the working of the
apparatus.
Having now particularly described and ascertained the nature of my said Invention,
and in what manner the same is to be performed, as communicated to me, I declare
that what I claim is -
A rotary engine constructed and working substantially as hereinbefore described.