AN IMPROVED ENGINE TO BE USED FOR PUMPING GASES, AIR, OR FLUIDS
Year: 1873

page_text: LETTERS PATENT to John Beale, of East Greenwich, in the County
of Kent, Engineer, for the Invention of "AN IMPROVED ENGINE TO BE
USED FOR PUMPING GASES, AIR, OR FLUIDS."
Sealed the 19th December 1873, and dated the 26th September 1873.
PROVISIONAL SPECIFICATION left by the said John Beale at the
Office of the Commissioners of Patents, with his Petition, on the
26th September 1873.
I, JOHN BEALE, of East Greenwich, in the County of Kent,
Engineer, do hereby declare the nature of the said Invention for
"AN IMPROVED ENGINE TO BE USED FOR PUMPING GASES, AIR, OR FLUIDS," to be
as follows:-
The onging is comnoood of an outer casing an onlindas furnished
L

page_text: Within the outer casing three or more radial vanes or pistons revolve
round a central fixed pin, the vanes and the central supporting pin being
of the same length as the casing.
The vanes are connected by rods or links with an equal number of
pins projecting from a disc on an eccentrically placed driving axle, which 5
passes through a stuffing box in one end plate of the outer casing for the
application of power in any ordinary manner.
By the foregoing arrangement of the parts on the revolution of the
said eccentric axle the vanes revolve round the central pin in such
manner as to cause by their varying speed in relation to one another a 1
constant inflow of gas, air, or fluid by the inlet, and a constant outflow
of gas, air, or fluid by the outlet.
:
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said John Beale in the Great Seal Patent Office
on the 24th March 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
BEALE, of East Greenwich, in the County of Kent, Engineer, send
greeting.
]
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-sixth day of September, in the a
year of our Lord One thousand eight hundred and seventy-three, in the
thirty-seventh year of Her reign, did, for Herself, Her heirs and suc-
cessors; give and grant unto me, the said John Beale, Her special
license that I, the said John Beale, my executors, administrators,
and assigns, or such others as I, the said John Beale, my executors,
administrators, and assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and.
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for AN IMPROVED
ENGINE TO BE USED FOR PUMPING GASES, AIR, OR FLUIDS," upon the condition

page_text: DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a transverse section, and Fig. 2 a longitudinal section of the
engine; A is the excentrically placed driving axle which may be driven
by a pulley as shewn. This axle or shaft has on it a disc B, from which
three pins C, C, C, project into the casing D. From these pins the
links E, E, E, extend to the three pins F, F, F, carried by bosses on the
pistons G, G, G, and thereby form the required connection between the
pins C, C, C, and the pistons G, G, G, which are carried by the central
cylinder H.
The disc B may be of a diameter nearly equal to that of the recess in
the end plate I, but need not fit therein, as the loose plate J will fill up.
the space between the disc and the recess. The pins C, C, C, may be
prolonged so as to extend the full length of the casing, and their ends
may be carried in a ring working in the back end plate.
The pistons G, G, G, may be increased in number, and may be altered
in their proportions. The links E, E, E, may also be dispensed with,
and pins projecting from the disc B may be made to work in grooves in
the pistons G, G, G, or pins projecting from the pistons may be made
to work in grooves in the disc, but I prefer the construction shewn in
the Drawings.
The space between the pistons at their nearest approach to one another
may be filled in by clothing the pistons with any light material, or the
pistons may be made hollow, of the requisite configuration, to reduce
such space to a minimum. The bearings of the disc and pistons may be
made spherical and adjustable. On the shaft A. being caused to revolve
in either direction the links E, E, E, and the pistons G, G, G, will be
carried round, and the pistons will be caused alternately to approach
towards and recede from one another. In passing over and away from
the inlet the pistons will be caused to recede from one another, thereby
diminishing the fluid pressure in the space between them, into which
space the gas, air, or fluid acted upon will flow, but as the pistons pass
towards and over the outlet the space between them will become lessened,
and the pressure increased, so that the gas, air, or fluid will be ejected
through the outlet.

page_text: Having thus described the nature of the said Invention, and in what
manner the same is to be performed, I hereby declare that what I claim
as of my Invention is, the construction of pumping engines in which
three or more pistons are worked by means of an excentrically placed
driving axle or shaft in the manner described.
In witness whereof, I, the said John Beale, have hereunto set
my hand and seal, the Twenty-first day of March, in the
year of our Lord One thousand eight hundred and seventy-
four.
Witness,
WILLIAM SPENCE,
8, Quality Court,
Chancery Lane.
JOHN BEALE. (L.S.)