Year: 1888

page_text: Date of Application, 30th Jan., 1888
Complete Specification Left, 18th Oct., 1888
Complete Specification Accepted, 23rd Nov., 1888
I, WILBERFORCE HARTLEY WYKE of No. 1 Place d'Jena, Paris, France, Barrister
at Law, do hereby declare the nature of this invention to be as follows:-
My invention relates to the construction and arrangement of rotary engine to be
worked by steam, compressed air or other fluid under pressure in the following
manner. A piston, attached to a radial arm projecting from a central boss, is fitted to
travel round in an annular cavity which is divided at two opposite points of its
circumference by sluices that can be withdrawn laterally by cams on the engine shaft.
Through the boss and arm leading to the piston there are two passages for fluid, the
one from a chamber on one side of the casing opening at the one face of the piston,
the other opening at the opposite face of the piston and leading through its arm and
boss to a chamber on the other side of the casing. A reversing valve, that can be
shifted by hand, governs passages to and from these two chambers, the one for
admission the other for emission of working fluid. In one position of this reversing
valve the fluid under pressure supplied to the one chamber passes through the boss
and arm of the piston and issues from the one side of it into the annular cavity,
having as an abutment one of the sluices which is then closed; at the same time
exhaust fluid issues from the annular cavity on the other side of the piston and flows
by the other piston passage to the chamber whence it is discharged. As the piston, in
its travel along the annular cavity, is approaching each of the sluices, that sluice is
withdrawn by the cam, allowing free passage for the piston, after which the sluice is
again advanced to form a partition in the annular cavity. Thus, while the piston
continuously revolves, there is always at least one of the sluices forming an abutment
for the pressing fluid on the one side of the piston, while the fluid that has expanded
in the annular cavity on the other side of the piston is being discharged as exhaust.
By shifting the reversing valve the direction of the piston's travel can be reversed,
or the piston can be stopped at any part of its revolution.
Dated this 30th day of January 1SS8
ABEL & IMRAY,
Agents for the Applicant.

page_text: I, WILBERFORCE HARTLEY WYKE, of No. 1. Place d'Jena, Paris, France, Barrister
at Law, 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 :-
My invention relates to the construction and arrangement of rotary engine to be
worked by steain, compressed air or other fluid under pressure in the following
manner.
A piston attached to a radial arm projecting from a central boss is fitted to travel
round in an annular cavity which is divided at two opposite points of its circumference
by sluices that can be withdrawn laterally by cams on the engine shaft. Through
the boss and arm leading to the piston there are two passages for fluid, the one from
a chamber on one side of the casing opening at the one face of the piston, the other
opening at the opposite face of the piston and leading through its arm and boss to a
chamber on the other side of the casing. A reversing valve that can be shifted
by hand governs passages to and from these two chambers, the one for admission
the other for emission of working fluid. In one position of this reversing valve
the fluid under pressure supplied to the one chamber passes through the boss and
arm of the piston and issues from the one side of it into the annular cavity, having
as an abutment one of the sluices which is then closed; at the same time exhaust
fluid issues from the annular cavity on the other side of the piston and flows by
the other piston passage to the chamber whence it is discharged.
As the piston in its travel along the annular cavity is approaching each of the
sluices, this sluice is withdrawn by the cam allowing free passage for the piston, after
which the sluice is. again advanced to form a partition in the annular cavity. Thus,
while the piston continuously revolves, there is always at least one of the sluices
forming an abutment for the pressing fluid on the one side of the piston, while the
fluid that has expanded in the annular cavity on the other side of the piston is being
discharged as exhaust.
By shifting the reversing valve the direction of the piston's travel can be reversed
or the piston can be stopped at any part of its revolution.
Figs. 1 and 2 of the accompanying drawings are vertical sections on axial planes
at right angles to one another, Fig. 3 is a side elevation of an engine according to
my invention; Fig. 4 is an elevation of the piston and its disc shewn separately.
A, which may be termed the cylinder, is a hollow ring put together in halves,
and preferably made eccentric in thickness to give it greater strength and rigidity
it is made with an open chase along its inner side to admit the flat part of the disc C
which carries the piston D. The central part of the disc C which is fixed on a
shaft P, is of spherical or it might be of double-conical, or conoidal form and has
two internal annular passages K and L and fits in a casing which has also two
internal annular passages N and O, this casing being secured centrally to the

page_text: cylinder A by arms B. The passages K. and L branch respectively from the middle
of the disc to the piston D and have open mouths on the opposite sides of the
piston. The passages N and O branch respectively to supply and discharge pipes.
At two diametrically opposite parts of the cylinder A are fitted sluices F which
are alternately advanced and retracted by a cam H fixed on the shaft P, this cam
being so set relatively to the piston D that as the piston approaches one of the sluices F,
this sluice is withdrawn allowing the piston to pass, and then it is again advanced
across the annular cavity of the cylinder to form an abutment for the working fluid
issuing from the mouth in the piston.
As shown in Fig. 2 the passages N and K supply the working fluid and L
and O serve for exhaust, but pipes connected to N and O may communicate with a
fourway cock or valve which can be shifted by hand so as to reverse the engine
by causing the working fluid to enter O and the exhaust to discharge from N.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what 1
claim is
A rotary engine wherein a radial piston provided with fluid passages and attached
to a central disc revolves in an annular cylinder fitted with abutment sluices which
are alternately advanced and retracted by a cam revolving with the piston, substantially
as described.
ABEL & IMRAY,
Agents for the Applicant.