IMPROVEMENTS IN OR RELATING TO ROTARY ENGINES Dn TIED FOR OTHER PURPOSES" WILLA
Year: 1883

page_text: LETTERS PATENT to George Gore of Balsall Heath in the County of Worcester
and William Pearson of Stourbridge in the County of Worcester Engineers
for an Invention of "IMPROVEMENTS IN OR RELATING TO ROTARY ENGINES
Dn TIED FOR OTHER PURPOSES"
WILLAD
PROVISIONAL SPECIFICATION left by the said George Gore and William
Pearson at the Office of the Commissioners of Patents on the 12th September
1883.
GEORGE GORE, of Balsall Heath, in the County of Worcester, and WILLIAM
PEARSON, of Stourbridge, in the County of Worcester Engineers. "IMPROVEMENTS
IN OR RELATING TO ROTARY ENGINES WHICH MAY BE UTILIZED FOR OTHER
PURPOSES
"
This Invention relates to certain improvements in or relating to the construction
and arrangement of rotary engines, and which improvements are also applicable to
rotary pumps, gas exhausters, pressure blowers, air engines, gas engines, and to
other apparatus.
According to the present improvements, the engine is constructed with an inner
cylinder formed of four segments of a circle, and which are bolted to end pieces
which are cast with or keyed on projecting shafts on which a fly wheel and a pulley
are keyed. Spaces are left between the segments to allow of slides or pistons
moving freely through the cylinder.
The outer case in which the cylinder revolves is constructed with plates which
form the ends of the engine, and in these ends recesses are turned out to receive
the ends of the said inner cylinder, the stuffing boxes cast exterior to the end plates
form the bearings on which the inner cylinder is carried. The bottom plate of the
outer case is curved to the same radius as the inner cylinder and extends for a
quarter of a circle. The top plate of the case is also curved and extends for a
quarter of a circle and is struck from the same centre as the bottom plate but of
a greater radius, according to the power of the engine required, this upper curved
plate forms the working section of the engine.

page_text: By this improved arrangement of parts, one piston or slide is always fully exposed
to the action of the steam, or other force, and when used as a gas exhauster or
blower it will deliver a constant and regular stream of gas or air.
When the pistons have passed, and before they enter, the and points of the
working section, they are guided by plates which cause their ends as they come
round to be gradually forced to pass within the diameter of the inner cylinder and
their other ends to be gradually forced out to the diameter of and to enter the
working segment.
Parts of the slides or pistons are cut away to allow them to move freely through
the cylinder at right angles to each other, without touching each other at any
point.
The improved apparatus is of simple construction, is less liable to get out of
repair and has less friction than other apparatus of a like nature, and having fewer
parts can be made at less expense than ordinary engines for various purposes.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Gore and William Pearson in the Patent Office on the
10th March 1884.
GEORGE GORE, of Balsall Heath, in the County of Worcester, and WILLIAM
PEARSON, of Stourbridge, in the County of Worcester, Engineers. "IMPROVEMENTS
IN OR RELATING TO ROTARY ENGINES WHICH MAY BE UTILIZED FOR OTHER
PURPOSES."
This Invention relates to certain improvements in or relating to the construction
and arrangement of rotary engines, and which improvements are also applicable to
rotary pumps, gas exhausters, pressure blowers, air engines, gas engines and to
other analogous apparatus.
Special advantages attendant upon the improved and peculiar construction and
arrangement of rotary engine herein described, are, that when used as an exhauster
for gas, or as a Blower, the improved apparatus will deliver a constant and unvarying
stream of gas or air, and when used as a Motive power engine, it will always
expose one piston or slide to the action of the steam or other force, the area of the
piston not varying so long as it remains in action, thus ensuring an engine of
uniform power. The moving parts are few in number, and the action is simple,
and the excessive friction so detrimental to engines of this class, is in this improved
arrangement reduced to a minimum. The engine is easy of construction, and not
liable to get out of order.
On the accompanying drawings, Figs 1 and 2 represent transverse sections of
the improved rotary engine, Fig 3. a longitudinal section, Fig. 4. a sectional plan,
Figs 5, 6 and 7 detail views of the slides. Fig 8, a side elevation, and Fig 9, a

page_text: Our improved rotary engine consists of or is constructed with an inner drum or
cylinder 1, formed of four (segments of a circle which are bolted to end, pieces 2,
which are cast with or keyed on projecting shafts 3, on which a fly wheel 4, and a
flanged pulley 5, are keyed or made fast. Spaces are left between the segments 1,
to allow of slides or pistons 6, 7, moving freely through the cylinder 1.
The outer case 8, in which the cylinder 1, revolves, is constructed with plates 9,
which form the ends of the engine, and in these end plates, recesses 10, are turned
out to receive the end pieces 2, of the cylinder 1, Stuffing boxes 11, cast exterior
to the end plates 9, form the bearings in which the shafts 3, of the inner cylinder
rotate. In large engines, and when used as an exhauster, extra bearings will be
adapted to support the weight of the inner cylinder and to relieve the stuffing
boxes therefrom.
A part of the bottom plate 12, of the outer case 8, is curved to the same radius
as the cylinder 1, the curved part extending not less than a quarter of a circle. A
part of the top plate 13, of the case is also curved to a like extent and is struck
from the same centre as the bottom plate is, but of a greater radius, according to
the power or capacity of the engine required. This upper curved plate 13, forms the
working section of the engine. It will thus be seen, that, as the inner cylinder, and
the curved plates 12, and 13, of the outer case, are struck from the same centre,
the distance between the outside of the inner cylinder, and the under side of the
working section of the top curved plate will be the same throughout, and that a
slide or piston passing through this space, must deliver the gas or air, or other
elastic fluid in a perfectly steady and uniform stream.
Referring to Fig; 1. on the accompanying drawings, it will be seen that the
piston 6, enters the working section at 14, before the piston 7, has left the section
at 15, and thus, by this arrangement, at least one of the pistons is always in the
working section. As one end of a piston enters the working section at 14, the
other end of the same piston enters the bottom section at 16, and during the time
the one end of the piston sweeps round from 14, to 15, its other end sweeps round
from 16, to 17, but as long as the pistons remain in the working sections, they have
no longitudinal or transverse movement in the cylinder 1, and thus the cross
friction so detrimental in other engines of this class, is, in the present improved
arrangement, avoided.
After each piston has passed the points 15, and 17, of the curved segments
13, 12, it is guided to the points 16, and 14, by steel plates 18, which cause the one
end of each piston as it comes round to be gradually forced flush with the diameter
of the inner cylinder as it enters the segment 12, and the other end to be gradually
forced out to the diameter of the working section 13, as it enters the same.
In Fig 2, the piston 6, is shown at half stroke, and the piston 7, as being actuated
by the guide plates 18.
Parts of the slides or pistons 6, 7, are cut away at 19, to allow them to move
freely through the cylinder 1, at right angles to each other, without touching each
other at any point.
For engines of a small size (working up to say 16 horse power) we prefer to
adopt the arrangement illustrated in Figs. 1, to 6, but for engines of a larger size
we may adopt the arrangement illustrated in Fig 7. in which one of the slides is
made in two parts, and when passed through the other slide, the holes 20, are
brought together and secured by rivets, screws or otherwise.
The side plates 21, complete the outer case, and when the engine is used as a Gas
Exhauster, or Blower, the inlet and outlet pipes will be secured to these plates as
illustrated in Fig. 1.
When intended to work as a Steam Engine, a simple arrangement of connecting
pipes may be used as illustrated in Figs 2, 4, 8 and 9. in which 22, is a steam pipe
from a boiler; 23, the inlet to the engine; 24, the outlet; 25, the exhaust pipe ;
26, a four way cock; and 27, a lever, by pulling which the engine will be at once
reversed.

page_text: Having now described the nature and object of our said Invention together
with the manner in which the same is to be or may be performed or carried into
practical effect, we would observe in conclusion that what we consider to be novel
and original as applied to rotary engines and analogous rotary apparatus herein
referred to and therefore claim as the Invention secured to us by the herein before
in part recited Letters Patent, is :-
First. The herein before described improved method of constructing the working
or effective parts of the cylinder of a rotary engine or other rotary apparatus by
making them of two plates, or their equivalents, curved to an extent of not less
than a quarter of a circle, the curves being struck from the same centre but of
different radii.
*
Second. The improved method of guiding the slides or pistons of such engines in
their inoperative positions from the segment of one radius to the segment of
another radius by other curved pieces connecting such segments, and forming
therewith a smooth surfaced curved chamber of an irregular form, substantially as
herein before described.
4
Third. The method of constructing the slides or pistons of such engines substan-
tially as hereinbefore described, so that they will move freely through the inner
cylinder at right angles to each other without touching, and so as to cause both
ends of each to act as a piston at each revolution.
Fourth. The combination of such parts, or of their respective equivalents acting
in the manner hereinbefore described, in the construction of Rotary Engines.
In Witness whereof, we, the said George Gore and William Pearson havé
hereunto set our hands and Seals this 7th day of March in the year of our Lord
One thousand eight hundred and eighty four.