IMPROVEMENTS IN THE CONSTRUCTION OF ROTARY ENGINES, APPLICABLE FOR PUMPS OR METERS, OR FOR THE PRODUC- TION OF MOTIVE POWER
Year: 1877

page_text: LETTERS PATENT to John Beale, of East Greenwich, in the County of Kent,
Engineer, for the Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF
ROTARY ENGINES, APPLICABLE FOR PUMPS OR METERS, OR FOR THE PRODUC-
TION OF MOTIVE POWER."
Sealed the 18th December 1877, and dated the 22nd June 1877.
PROVISIONAL SPECIFICATION left by the said John Beale at the Office of
the Commissioners of. Patents on the 22nd June 1877.
JOHN BEALE, of East Greenwich, in the County of Kent, Engineer, "IMPROVE-
MENTS IN THE CONSTRUCTION OF ROTARY ENGINES, APPLICABLE FOR PUMPS OR
METERS, OR FOR THE PRODUCTION OF MOTIVE POWER."
My Invention relates to an improved arrangement of rotary engine, whereby.
greater efficiency of action is obtained' than heretofore.
And my Invention consists in causing the ends of the partition or slide to main-
tain its required contact with the internal surface of the cylinder, between the inlet
and outlet, by means of a piece fixed to the slide at right angles thereto, with a slot
formed in such transverse piece, through which is passed a pin fixed in the cylinder
in such a position that its centre is at a distance from the interior of the cylinder
corresponding with half the length of the slide when this is at its position of
greatest piston."
15
The interior of the cylinder is made truly cylindrical, and the rotary axle is set,
as heretofore, excentric thereto. The axle or drum is slotted to allow the piston or
slide to move therein freely, so as to keep its ends in contact with the interior of
the cylinder whilst traversing from the inlet to the outlet, as the slide is moved.
round by the revolution of the drum and controlled by the fixed pin.
:.
A rotary engine constructed in the manner stated is especially applicable for use
as a gas exhauster, but it may be applied to other uses for which rotary engines
have heretofore been employed. -
:

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said John Beale in the Great Seal Patent Office on the 20th December
1877.
JOHN BEALE, of East Greenwich, in the County of Kent, Engineer. "IMPROVE
MENTS IN THE CONSTRUCTION OF ROTARY ENGINES, APPLICABLE FOR PUMPS OR
METERS, OR FOR THE PRODUCTION OF MOTIVE POWER."
My Invention of "Improvements in the Construction of Rotary Engines, Appli-
cable for Pumps or Meters, or for the Production of Motive Power," relates to an
improved arrangement of rotary engine whereby greater efficiency of action is
obtained than heretofore.
And any Invention consists in causing the ends of the partition or slide to main-
tain their required contact with the internal surface of the cylinder, between the
inlet and the outlet, by means of a piece fixed to the slide at right angles thereto, with
a slot formed in such transverse piece, through which is passed a pin fixed in the
cylinder in such a position that its centre is at a distance from the interior of the
cylinder corresponding with half the length of the slide when this is at its position
of "greatest piston."
The interior of the cylinder is made truly cylindrical, and the rotary axle is set
as heretofore, excentric thereto. The axle or drum is slotted to allow the piston or
slide to move freely therein, so as to keep its ends in. contact with the interior of
the cylinder whilst traversing from the inlet to the outlet, as this slide is moved
round by the revolution of the drum and controlled by the fixed pin.
A rotary engine constructed in the manner stated is especially applicable for use
as a gas exhauster, but it may be applied to other uses for which rotary engines
have heretofore been employed..
:
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 by the aid of the
accompanying Drawings, in which is represented an engine constructed in the
manner above referred to.
DESCRIPTION OF THE DRAWINGS.
Figures 1, 2, and 4 are vertical sections of the engine; Fig. 3 represents the same
in elevation with the cover of the cylinder removed; and Fig. 5 is a section taken
at right angles to Figures 1, 2, and 4. In these several Figures the same letters of
reference indicate corresponding parts.
A is the cylinder or casing; B is a pin fixed in the cylinder by being carried
by and projecting from the back end plate. This pin, as shewn in Fig. 1, is in cross
section, formed as a cam, the sides of which are arcs of circles, each described from
the opposite angle. C is a central piece fixed to the slide D at right angles thereto,
with a slot formed in such piece adapted to receive the end of the pin or cam B,
which is fixed in the cylinder in such a position that its centre is at a distance from
the interior of the cylinder corresponding with half the length of the slide when at
its position of "greatest piston." E is the axle or drum, the revolution of which
will earry round the slide D, which, through the action of the pin or cam B working
in the slotted piece C, will be guided and controlled, so that its ends will be kept in
contact with the interior of the cylinder whilst traversing from the inlet to the
outlet thereof. The axle or drum E is slotted in order to allow the piston or slide E
to move freely therein as required.
Instead of a pin B in the form of a cam as described, a cylindrical pin may be
used and the cylinder altered in form to suit it; or the packing slips a, a, may be
left to make up the difference between the line traversed by the ends of the slide
and the interior of the cylinder between the inlet and the outlet.
Instead of the ends of the slide being in contact with the interior of the cylinder
only whilst traversing from the inlet to the outlet,. the pin may be placed centrally,
as in Figures 2 and 3.

page_text: Again; instead of a cylinder a chamber may be used of a form corresponding
with the line traversed by the ends of the slide, as shewn in Fig. 4.
When a cylindrical pin is used it may be provided with a block F.
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 rotary engines, wherein the motion of the piston or slide is
controlled by a fixed pin in the manner described.
In witness whereof, I, the said John Beale, have hereunto set my hand and
seal, the Nineteenth day of December, in the year of our Lord One thousand
eight hundred and seventy-seven.
Witness,
WILLIAM SPENCE,
8, Quality Court,
Chancery Lane.
JOHN BEALE. (LS.)