A New or Improved Rotary Engine, applicable also for Use as a Pump.
Year: 1898

page_text: Date of Application, 22nd Oct., 1898
Complete Specification Left, 22nd Aug., 1899-Accepted, 21st Oct., 1899
PROVISIONAL SPECIFICATION.
A New or Improved Rotary Engine, applicable also for Use as a
Pump.
I, CHARLES SHIELDS MCINTIRE, of 98, St. Martin's Lane, Trafalgar Square, London,
Engineer, do hereby declare the nature of this invention to be as follows:-
The new or improved motive power engine or pump forming the subject of this
invention consists of the following arrangements and devices:-
A wheel is mounted so as to rotate on an axis. Concentric with the periphery
or rim of this wheel is placed what may be called the working cylinder of the
motive power engine or pump, as the case may be. This so-called working
cylinder is of U or other suitable cross section placed with the legs of the U next
to the rim of the aforesaid wheel and so adapted that they fit fluid-tight against
such rim, the fluid-tight joint between the legs of the U and the rim being
secured by suitable packing strips, and, when necessary, by projections on the
one fitting into grooves in the other. The working cylinder is so secured to some
fixed structure or point of resistance that it is prevented from moving in the
direction of the circumference of the wheel, but the latter is free to move round
against the inner segmental edges of the cylinder. The front end of the cylinder
is quite open or connected to a suitably shaped outlet pipe while the rear end is
inclined inwards at an angle to the periphery of the wheel, and the inlet pipe
for the motive fluid, in the case of a motive power engine, or for the fluid to be
drawn in, in the case of a pump, enters the working cylinder at the rear end.
Inside the rim of the wheel, either attached thereto or formed therewith, and
in some cases formed in the spokes of the wheel, is arranged a series of pockets or
chambers placed more or less radially with regard to the periphery of the wheel;
and corresponding to these radial pockets or chambers is a series of openings
formed in the periphery of the wheel. Into each of these pockets or chambers and
openings is fitted a radially moving slide the outer end of which is adapted to fit,
with suitable packing when necessary, into the working cylinder so as to form a
piston therein, the other end being provided with a piston rod adapted to pass
through a stuffing box or other suitable opening in the bottom of the pocket
or chamber. The end of this piston rod is adapted to be acted upon by a guide
or cam secured, so that it cannot rotate, to some suitable fixed point. This guide
or cam is so shaped that as the wheel revolves it thrusts out each of the pistons in
succession into the rear end of the working cylinder, and after each piston has
traversed the length of the said cylinder the guide or cam withdraws each piston
in succession into its pocket or chamber until such piston comes round again to the
rear end of the working cylinder when it again thrusts out the piston into the
cylinder, and so on continuously.
It will now be understood that when a piston is thrust out into the cylinder in
front of the inlet opening at the rear end the motive fluid will press upon the back
of the piston and urge it forward to the front end of the cylinder, turning the
wheel through an arc corresponding more or less to the length of the cylinder;
and that just before any given piston leaves the front end of the cylinder so as to

page_text: exhaust the motive fluid behind it, the next piston in succession will have been
thrust out into the working cylinder to receive the pressure of the motive fluid
and so on continuously, the wheel receiving as many impulses per revolution
as there are pistons connected with it. The rotation of the wheel of course
communicates power through the axis to the machine or other object to be
driven.
It will be understood that the action is similar when the apparatus is used as a
pump; but in that case the wheel is caused to rotate by some external force, the
pistons drawing the fluid to be pumped into the cylinder through the inlet
pipe at the rear end of the cylinder and ejecting it at the front end thereof.
To provide for wear and tear of the pistons or their packings, the actuating
guide or cam may be made adjustable, and other parts subject to wear and tear
may also be provided with suitable adjustments.
To relieve the front of each piston of back pressure as soon as it has reached a
certain position in the working cylinder the front end of the cylinder may be
provided with grooves or flutes to allow the steam behind the preceding piston
to escape more or less before the said piston is clear of the cylinder.
To support the whole or part of the weight of the pistons when in the cylinder
and to counter-balance the pressure of the motive fluid tending to press them back
into their pockets or chambers, fluid may be admitted into such pockets or
chambers through suitable passages or otherwise.
Dated this 22nd day of October 1898.
C. S. McINTIRE,
Per W. H. Beck,
Agent, 115, Cannon Street, London, E.C.
COMPLETE SPECIFICATION.
A New or Improved Rotary Engine, applicable also for Use as a
Pump.
I, CHARLES SHIELDS MCINTIRE, formerly of 98, Saint Martin's Lane, Trafalgar
Square, London, Engineer, but at present of Sunny Side, Hockley, in the County
of Essex, 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 new or improved motive power engine or pump forming the subject of this
invention is illustrated in the accompanying drawings in which Figure 1 is a
side elevation and Figure 2 a vertical section on line x-x of Figure 1.
Similar letters relate to like parts in both the figures of the drawings.
a is a wheel keyed or otherwise suitably mounted on the shaft or axis b. c is
what may be called the working cylinder on the motive power engine or pump.
It is disposed concentrically with the periphery or rim of the wheel a, and is
secured by its base d to a bed plate or other fixed structure or point of resistance.
This so called working cylinder c is of U or other suitable cross section placed with
the legs of the U next to the rim of the wheel a as shewn in Figure 2 and is so
adapted that they fit fluid-tight against such rim, the fluid-tight joint between
the legs of the Ŭ and the rim being ensured by suitable packing strips e for
example, and when necessary by projections on the one fitting into grooves in
the other, as at f, for example. The working cylinder c, being fixed as before
explained, is prevented from moving in the direction of the circumference of the
wheel a, but the latter is free to move round fluid-tight against the inner segmental
edges of the cylinder c.

page_text: The front end g of the cylinder c may be quite open, or it may be connected
to one or more suitable outlets h, while the rear end i is preferably inclined inwards
at an angle to the periphery of the wheel a, as shewn at j, and the inlet pipe k for
the motive fluid, in the case of a motive power engine, or for the fluid to be drawn
in, in the case of a pump, enters the working cylinder c at the rear end as shewn.
Or in some cases the engine or pump may be reversible and in that case both ends
of the cylinder c would be uniform, and the exhaust openings be governed by the
levers or other devices operating the reversing valve.
Inside the rim of the wheel a, either attached thereto, or formed therewith,
and in some cases found in the spokes of the wheel, is arranged a series of
pockets or chambers m placed more or less radially with regard to the periphery
of the wheel a; and corresponding to these radial pockets or chambers m is a
series of openings n formed in the periphery of the wheel itself. Into each of
the pockets or chambers m and openings n is fitted a radially moving slide o, the
outer end of which is adapted to fit, with suitable packing when necessary, into
the working cylinder c so as to form a piston therein, the other and inner end of
the radially moving slide o being provided with a piston rod p adapted to pass
through a stuffing-box or other suitable opening q in the bottom of the pocket or
chamber m. The pistons o may be placed in position in the pockets or
chambers m or withdrawn therefrom when required by first removing the cover
plates in the sides of the spokes which are adapted for this purpose.
The end of this piston rod p is adapted to be acted upon by a suitable guide or
cam secured to some suitable fixed point so that it cannot rotate. For example,
the cam r may be mounted loosely on the shaft or axis band be prevented from
rotating therewith by a connexion to any convenient fixed part of the framework
(not shewn in the drawing). The ends s of the piston rods p pass through slots t
in the sides of the spokes and enter the groove u of the cam r which groove u is so
shaped that as the wheel a revolves and each one of the pistons o is brough
successively opposite the working cylinder c it thrusts out each of such pistons in
succession into the rear end of the working cylinder c; and after each piston o
has traversed the length of the said cylinder the guide or cam r withdraws each
piston o in succession into its pocket or chamber m until such piston comes
round again to the rear end of the working cylinder c, when it is again thrust out
into the cylinder by the action of the guide or cam r and so on continuously.
It will now be understood that when a piston o is thrust out into the working
cylinder c in front of the inlet opening at the rear end thereof the motive fluid will
press upon the back of the piston o and urge it forward to the front end of the
working cylinder c turning the wheel a through an are corresponding more or less
to the length of such cylinder; and that just before any given piston leaves the
front end of the cylinder so as to exhaust the motive fluid behind it, the next
piston in succession will have been thrust out into the working cylinder to receive
the pressure of the motive fluid, and so on continuously, the wheel a receiving as
many impulses per revolution as there are pistons o connected with it.
The rotation of the wheel a of course communicates power through the axis
to the machine or other object to be driven, and the wheel may be mounted directly
on such machine, or be integral therewith, or it may be mounted in suitable A or
other frames (not shewn in the drawings) and its shaft b be furnished with belt,
toothed, or other gearing for communicating motion as may be required.
It will be understood that when the apparatus is used as a pump the action is
similar, but in that case the wheel is caused to rotate by some external force, the
pistons o drawing into the cylinder c the fluid to be pumped through the inlet
pipe at the rear end of the cylinder, and ejecting it at the front end thereof.
To relieve the front of each piston o of back pressure as soon as it has reached
a certain position in the working cylinder c, the front end of such cylinder
may be provided with grooves or flutes to allow the steam behind the preceding
piston to escape more or less before the said piston is clear of the cylinder.
In order to support the whole or part of the weight of the pistons o when

page_text: in the cylinder c, and to counterbalance the pressure of the motive fluid tending to
press them back into their pockets or chambers m, fluid may be admitted into such
pockets or chambers through suitable passages or otherwise.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
First. A rotary engine or pump in which the working cylinder is composed
partly of a fixed segmental chamber and partly of the periphery of a rotating
wheel, substantially as described.
Second. A rotary engine or pump in which a wheel a is adapted to rotate in
relation to a fixed working cylinder c and a fixed guide or cam in such a manner
as to cause radiating pistons o to be projected into such cylinder c, and retire
therefrom at pre-arranged portions of the revolution of the wheel a, substantially
as described with reference to the drawings.
Third. In a rotary engine or pump the combination of the rotating wheel a
carrying the radially moving pistons o adapted to traverse intermittently the fixed
working cylinder c, with means for effecting such intermittent action of the
pistons, substantially as described.
Fourth. The rotary engine or pump constructed, arranged and operating,
substantially as described, with reference to the drawings.
C. S. McINTIRE,
Per W. H. Beck,
Agent, 115, Cannon Street, London, E.C.
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