Rotary Engine. Page: 3 of 5
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UNITED STATESPATENT OFFICE.
CARTER M. CAGLE, OF BECKVILLE, TEXAS, ASSIGNOR OF ONE-HALF TO
LEE C. PRUITT, OF BECKVILLE, TEXAS.
ROTARY ENGINE.No. 822,843.
To all whom it mcau concern.
Be it known that I, CARTER M. CAGLE, a
citizen of the United States, residing at Beck-
ville, in the county of Panola and State of
5 Texas, have invented a new and useful Ro-
tary Engine, of which the following is a speci-
fication.
This invention relates to rotary engines,
and has for its principal object to provide an
To engine of simple and compact construction,
in which the pressure and expansive force of
the steam or other actuating fluid may be
utilized to the fullest advantage.
A further object of the invention is to pro-
15 vide a novel form of rotary engine in which a
piston-drum carries a plurality of pivotally-
mounted wings that are arranged to move
outward within a steam-space and assume
operative position in advance of their en-
20 trance into the active pressure-space of the
cylinder and without interfering with the ac-
tion of the fluid-pressure on piston-wings pre-
viously moved to operative position.
A still further object of the invention is to
25 provide a novel form of cushioning means ar-
ranged to be engaged by the piston-wings as
the latter are folded in toward the periphery
of the piston-drum.
A still further object of the invention is to
30 provide an improved packing which will pre-
vent the passage of steam below the piston-
drum.
With these and other objects in view, as
will more fully hereinafter appear, the inven-
35 tion consists in certain novel features of con-
struction and arrangement of parts, herein-
after fully described, illustrated in the accom-
panying drawings, and particularly pointed
out in the appended claims, it being under-
4o stood that various changes in the form, pro-
portions, size, and minor details of the struc-
ture may be made without departing from
the spirit or sacrificing any of the advantages
of the invention.
45 In the accompanying drawings, Figure 1 is
a sectional elevation of a rotary engine con-
structed in accordance with the invention.
Fig. 2 is a transverse sectional elevation of
the same. Fig. 3 is an elevation of one side of
5o the engine. Fig. 4 is a detaii perspective
view of one of the piston-wings detached.
Similar numerals of reference are employedPatented June 5,1906.
to indicate corresponding parts throughout
the several figures of the drawings.
The engine is provided with a suitable base 55
or bed-plate 10, carrying standards 11, at the
upper ends of which are bearings for the re-
ception of the engine-shaft 12, the latter be-
ing provided with a belt-wheel or the like,
through which the power may be transmitted 6o
to any mechanism to be driven.
Between the standards is arranged the cyl-
inder 15, comprising an approximately circu-
lar central member 16, having side flanges 17
and 18, and within the cylinder is a piston- 65
drum 19, that is rigidly secured to the shaft
12. The piston-drum is shown in the present
instance as of generally rectangular contour,
and its opposite sides are provided with cir-
cular flanges 20, which fit against the flanges 70
17 and 18 of the stationary cylinder in such
manner as to form fluid-proof joints.
The cylinder is provided at one side with a
port 23 for the admission of steam or other
actuating fluid, and at the opposite side is an 75
exhaust-port 24, the two ports being approxi-
mately diametrically opposite each other.
That portion of the inner wall of the cylinder
which extends from the lower wall of the in-
let-port to a point adjacent to the exhaust- 8o
port is curved to conform to the periphery of
the piston-drum 19, and the folded piston-
wings 25, and from the end of this curved por-
tion of the cylinder the wall extends tangen-
tially to form an inclined shoulder 26, that 85
terminates at the lower wall of the exhaust-
port 24.
The upper portion of the cylinder is divided
into a- pressure-space 28, that extends from
approximately the vertical plane of the axis 90
of shaft 12 to the exhaust-port, the curved
wall of this portion of the cylinder being
struck from the center of the shaft 12 and at
such distance therefrom that the outer edges
of the piston-wings 25 will be in contact with 95
said wall during this portion of the move-
ment. That portion of the cylinder from the
upper wall of the inlet-port 23 to the vertical
plane of the axis of shaft 12 is of greater
width than the pressure-space 28 and nor- loc
mally constitutes a steam-chest into which
the piston-wings enter, and at this point the
piston-wings are moved outward to operative
position.Specification of Letters Patent.
Application filed April 3, 1906. Serial No. 309,623.
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Cagle, Carter M. Rotary Engine., patent, June 5, 1906; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth509518/m1/3/: accessed July 18, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.