Improved Rotary Engine or Turbine.
Year: 1898

page_text: Date of Application, 21st Apr., 1898
Complete Specification Left, 21st Feb., 1890-Accepted, 21st Apr., 1899
Improved Rotary Engine or Turbine.
We, JOSEPH YATES, of 32, Great St. Helens, Engineer, and THOMAS KERRISON
BELLIS, of 6, Jeffrey's Square, Merchant, both of London, do hereby declare the
nature of this invention to be as follows:-
According to this invention the rotary part (hereafter called rotator) is not
encased as is usual but is made circumferentially with a number of depressed
openings or cavities in place of the usual vanes. This rotator is carried in a
shoe frame, within the curve of which are arranged a number of ports for exit of
steam, the ports are surrounded by a face which presses steam tight upon the
periphery of the rotator, as the rotator revolves the steam meets the cavities and
so operates the rotator. The face of the ports is carried on a frame which enters
a bed on the curve. This frame fits steam tight in the bed but is capable of being
pressed out by the pressure of steam which keeps the face tight against 'the
periphery of the rotator.
The cavities in the rotator are so arranged that as one
passes a port another meets another port; on a cavity passing a port the steam
carried around at once escapes. To collect and carry this off the rotator and shoe
is covered with a casing.
To enable some or all the ports to be shut off at will, each port is provided with
a valve preferably of a rotary character. The back of the curve of the shoe is
formed with a belt for the steam, the ports all being in communication with the
belt.
FREDERIC PRINCE,
Agent for Applicants.
Improved Rotary Engine or Turbine.
We, JOSEPH YATES, of 32, Great St. Helens, Engineer, and THOMAS KERRISON
BELLIS, of 6, Jeffrey's Square, Merchant, both of London, 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 an improved rotary engine or turbine.
According to the invention the rotary part of the engine (hereinafter referred
to as the rotator) is not closely encased as is usual, and is formed circumferentially
with a number of depressions or cavities in place of the usual vanes.
PR77
The said

page_text: rotator is carried in a curved shoe frame within which are arranged a number
of steam ports, the faces of which press steam tight against the periphery of the
rotator so that the steam issuing from the said ports meets the cavities and operates
the rotator. The invention consists more particularly in the construction and
combination of the various parts forming the engine.
To enable the invention to be fully understood we will describe it by reference
to the accompanying drawing, in which;-
Figure 1 is a vertical cross section through a rotary engine or turbine con-
structed according to our invention; and
Figure 2 is a longitudinal section thereof.
a is the rotary cylinder or rotator which is keyed upon the shaft b carried in bear-
ings c, e formed in the end plates c¹, c¹ of a casing d which surrounds the rotator a,
a space being left between the inner surface of the casing d and the cylinder a.
The casing d is shewn fixed to the bed e of the engine although it may be other-
wise secured.
f, f are the recesses or cavities formed circumferentially in the body of the
rotator a, the said recesses opening on to the cylindrical surface and extending
into the interior of the cylinder, the inner ends being closed; the recesses f, f
are preferably of the shape shewn, that is to say, with the faces f¹, f¹ thereof
inclined to the periphery of the rotator at an angle such that the steam enters the
said recesses parallel to the said sides f¹; whilst the faces of the said recesses
are practically radial. These recesses extend longitudinally nearly the whole
length of the rotator a and may be conveniently formed, as is here shewn, by
slotting through the cylinder longitudinally and applying the fixed end plates a¹
thereto.
9, are the steam inlet ports, the said ports being formed in the shoe / against
which the cylinder a rotates. Each port g may be supplied with steam from a
separate steam pipe g¹ which pipes are so arranged that the motor can be driven
by steam issuing from the whole series of ports or from any desired number
thereof. The shoe is provided with a cylindrical extension g² which enters a
sleeve upon a plate fixed in the bed of the motor.
The shoe his provided with a hollow extension ; also furnished with a number
of ports, and with an exhaust outlet in connection with the space d';
the object of these ports is hereinafter described.
The operation of our rotary engine is as follows,-Steam being admitted to
the ports g, g successively enters the recesses f. f in the rotator a so as to revolve
the latter and thereby the shaft 6 upon which it is mounted. Each recess f
carries the steam it contains with it until it reaches the first port in the hollow
extension through which it exhausts into the said extension and then into the
exhaust through the outlet 72. The steam in the extension j rushes through
the ports into the recesses passing them (and which have been exhausted into
the space d) and gives further impulses to the rotator. The steam finally passes
from the recesses f, f into the space between the casingid and the rotating
cylinder a and escapes through the exhaust d³.
The steam supply pipes gl are preferably provided with suitable cocks or valves
so that the supply of steam can be regulated as desired.
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:
-
1. A rotary engine or turbine comprising a rotating cylinder mounted on a
shaft carried in bearings in the end plates of a casing surrounding the cylinder
and between which and the cylinder a space is left, the said cylinder being pro-
vided with a number of peripheral recesses having inclined faces and to which
steam is supplied through one or more steam ports formed in a shoe against
which the cylinder rotates, substantially as herein before described and illustrated.
2. In the rotary engine or turbine described in Claim 1, the employment of an

page_text: expansion chamber into which the recesses can discharge steam and having ports
through which the steam can re-enter the recesses after they have been exhausted,
substantially as, and for the purposes, herein before described.
3. An improved rotary engine or turbine, constructed substantially as herein-
before described and illustrated in the accompanying drawing.
99.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicants.