AN IMPROVED ENGINE TO be used for PUMPING GASES, AIR, OR FLUIDS
Year: 1874

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."
Scaled the 30th October 1874, and dated the 14th May 1874.
PROVISIONAL SPECIFICATION left by the said John Beale at the.
Office of the Commissioners of Patents, with his Petition, on the
14th May 1874.
:
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:
My Invention has for its object the construction of rotary engines in
such a manner as to obtain increased lightness and simplicity of the
moving parts, and consists in the use of two or more vanes or pistons
carried round the interior of a cylinder by the action of an excentric
axle or drum, such vanes or pistons being maintained in their course by
J

page_text: guide blocks fixed thereto and working in annular grooves formed in the
end plates of the cylinders and concentric therewith.
The axle is slotted longitudinally in order to receive the ends of tho
vanes nearest to the centre of the cylinder, such ends being enlarged to
portions of cylinders, which being pressed against by the sides of the
slots in the axle are driven round, the vanes being caused to maintain
a radial position in relation to the centre of the cylinder by the curved
guide blocks working in the annular grooves in the end plates.
The cylinder is fitted with an inlet and outlet as usual, and on the
axle being caused to revolve the vanes by their action produce a minus
pressure at the inlet, and a plus pressure at 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 14th November 1874.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN 1
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 Fourteenth day of May, in the year of
our Lord One thousand eight hundred and seventy-four, in the thirty-
seventh year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said John Beale, Her special licence
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 (amongst others) that I, the said John Beale, my executors
or administrators, by an instrument in writing under my, or their,
or one of their hands and seals, should particularly describe and.
:

page_text: ascertain the nature of the said Invention, and in what manner the
same was to be performed, and cause the same to be filed in the Great
Seal Patent Office within six calendar months next and immediately
after the date of the said Letters Patent.
NOW KNOW YE, that I, the said John Beale, do hereby declare
the nature of my said Invention, and in what manner the same is to be
performed, to be particularly described and ascertained in and by the:
following statement, reference being had to the Drawings hereunto,
annexed, and to the letters and figures marked thereon (that is to
say):
My Invention of "An Improved Engine to be used for Pumping"
Gases, Air, or Fluids" has for. its object the construction of rotary
engines in such a manner as to obtain increased lightness and simplicity
of the moving parts, and consists in the use of two or more vanes or
3 pistons carried round the interior of a cylinder by the action of an
excentric axle or drum, such vanes or pistons being maintained in their
course by guide blocks fixed thereto and working in annular grooves;
formed in the end plates of the cylinder and concentric therewith, or by:
other suitable means.
The axle or drum is slotted longitudinally in order to receive the ends
of the vanes or pistons nearest to the centre of the cylinder, such, ends
being enlarged to portions of cylinders, which being pressed against by
the sides of the slots in the axle or drum are driven round, the vanes or
pistons being caused to maintain a radial position in relation to the
centre of the cylinder by the curved guide blocks working in the:
annular grooves in the end plates, or by the means herein-after
described.
By the said configuration of the vanes or pistons, with only their ends"
enlarged to a partially cylindrical form in order to adapt them for
working in the slots of the axle or drum, friction is diminished."
The cylinder is fitted with an inlet and outlet as usual, and on the.
axle or drum being caused to revolve the vanes or pistons by their
action produce a minus pressure at the inlet, and a plus pressure at the
outlet..
Having thus stated the nature of the said Invention, I will proceed to:
describe more particularly in what manner the same is to be performed.

page_text: by the aid of the accompanying Drawings, in which are represented;
different modes of carrying the Invention into effect.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is an end view with the end plate removed of an engine with
the pistons maintained in their course by curved guide blocks; Fig. 2 is.
a transverse section of an engine with entire rings substituted for the.
said guide blocks; Fig. 3 is a transverse section; and Fig. 4, an end
view with the end plate removed, shewing an arrangement in which the
pistons are controlled as required by means of arms connected to a
central pin. In these several Figures the same letters of reference
indicate corresponding parts.
A, A, A, are the vanes. or pistons, three of which are shewn in the
Figures, and which are carried round the interior of the cylinder B by,
the action of the excentric axle or drum C, which is slotted longi-.
tudinally in order to receive the pistons and allow of their working;
therein. These vanes or pistons are enlarged at the parts a, a, (which
will work in contact with the sides of the slots in the axle or drum C):
in the manner shewn, so as to form at such parts portions of cylinders,
of a diameter equal to the width of the said slots. These enlarged
parts may be packed by means of packing pieces b, b, as shewn in
Fig. 4.
In the arrangement shewn in Fig. 1 the pistons are fitted at each of
their ends with curved guide blocks F, F, F, fixed to the pistons and
revolving in annular grooves G formed in the end plates of the cylinder
and concentric therewith. The pistons in other respects are free to
move in the slots, and are only in contact with the sides thereof at the.
parts a, a.
.
In the arrangement shewn in Fig. 2 entire rings H, H, H, are
substituted for the guide blocks F, F, F, to which rings the pistons are
respectively fixed. These rings may be of any suitable diameter, and
it is evident that when made of the smallest possible diameter so as to
become a mere boss the grooves in the end plates would be dispensed
with, and only a central pin would be required. Such an arrangement
is shewn in Figures 3 and 4, in which case the pistons are fitted in the
middle of their length with connecting arms D, D, D, terminating in
bosses bored to fit upon and revolve around the central pin E.
1-

page_text: The arrangement shown in Figures 3 and 4 may be combined with
either one, two, or three of the rings shewn in Fig. 2, or with one, two,
or three of the curved guide blocks, shewn in Fig. 1.
With the arrangement shown in Figures 1 and 2 two or more pistons
may be used, but with the arrangement shewn in Figures 3 and 4 not
less than three pistons should be employed unless combined with one or
more of the guide blocks F (Fig. 1), or with one or more of the rings H
(Fig. 2).
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 use in rotary engines of vanes or pistons
worked by an excentric axle or drùm, such vanes or pistons having the
parts which work in contact with the side of the radial slots in the axle
or drum enlarged so as to form portions of cylinders, as and for the
purpose herein-before described.
In witness whereof, I, the said John Beale, have hereunto set
my hand and seal, the Ninth day of November, in the year of
our Lord One thousand eight hundred and seventy-four.
0 Witness,
WILLIAM SPENCE,
8, Quality Court,
Chancery Lane..
JOHN BEALE. (L.S.)