Improvement in Rotary Engines. Page: 5 of 6
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122,362
UNITED STATES PATENT OFFICE.
JOHN D. RICHARDSON, OF HOUSTON, TEXAS.
IMPROVEMENT IN ROTARY ENGINES.
Specification forming part of Letters Patent No. 123,362, dated February 6, 1872.
To all whom it may concern: on opposite sides of a hollow diaphragm, E,
Be it known that I, JoIN D. RICHARDsoN. and confined together between two circular
of Houston, in the county of Harris and State heads, H H'. These rings, together with their
of Texas, have invented a new and Improved heads and the interposed diaphragm, consti-
Rotary Engine; and I do hereby declare that tute the body of the engine, and are supported
the following is a full, clear, and exact descrip- upon standards G G', by means of collars t t',
tion thereof, reference being had to the accomn- througlhwhitC h passes a shaft, C, that is keyed
panying drawing making part of this specifica- to the hub of the said diaphragm, as shown in
tion, in which- Fig. 4, plate 2. The standards G ' are hot-
Figure 1, plate 1, is an elevation of the ena- low, and communicate below with steam-ways
gine with one head removed, and showing, by in the engine- base J, which lead to a reversible
a section through its base, the reversible inlet throttle-valve, _K. Above, tlihehollowstandards
and exhaust valve. Figs. 2 and 3 indicate the G O ' communicate with chambers ac a', within
arrangement of the valve-ports. Fig. 4, plate the rings A A', through hollow journal-boxes
2, is a diametrical section through the engine, F F', and the collars t t'. The latter are formed
taken in the plane indicated by dotted line x on the heads H H', and are received into the
in Fig. 7. Figs. 5 and 6 are views of the ec- said journal-boxes and properly packed, as
centric hub and its collar. Fig. 7, plate 3, is shown in Fig. 4. The throttle-valve communi-
a. sectional view through one of the hollow cates with a steam inlet-passage, m, and also
rings, showing behind it the parted diaphragm with an exhaust-passage, j, both of which are
rdct indicating an eccentric drum in dotted made through the engine-base J, as shown in
lines. Fig. 8, plate 3, is a section through the Fig. 1. The shellof the throttle-valve is dome-
parted diaphragm taken in the plane indicated shaped, and the valve t, which is arranged
by dotted line y in Fig. 7. Fig. 9 is a bottom therein anud snplported upon a lixed three ported
view of the base of the engine, indicating,by plate, p, is constructed with ports f', n, and i,
dotted lies, the inlet and exhaust ways. and keyed on a, stem, 1, carrying a handle, k'
Similar letters of reference indicate corre- By turning the valve h in one direction a com-
sponding parts iu the several figures. munieation between one of the hollow stand-
This invention relates to engines of the ro- ards and the steam-inlet ia will be established,
tary kind, which may be driven by steam or and a communication between the opposite
other elastic agent, or which may be used for hollow standard and the exhaust-passagej will
pumping water. My object is to so construct be established. By reversing the valve h the
an engine of the kind named that the piston, directionof theinflowing andoutilowingsteam
as well as an interior eccentric drul, shall ro- will bereversed. Iwill herestate that whenthe
tate with the body or shell of the engine, engine is rotating the steam enters through one
thereby obviating a large amount of friction, standard and exhausts through the other, pass-
which is incident to all rotary engines with ing through the hollow diaphragm E. Within
which I am acquainted, and at Lhe same time the circular chambers a a', surrounded by the
obtaining a more direct application of the force hollow rings A A', cylindrical drams B B are ec-
applied to drive the engine, as will be herein- centrically arranged so as to rotate around sta-
after explained. tionary eccentrics o c', through which the shaft
The following description of my invention Cpasses, as shown in Fig. 4. Each one of the
will enable others skilled in the art to under- eccentric drums is smaller in diameter than
stand it. the chamber in which it is arranged, and each
In the accompanying drawing I have repre- drum touches the hollow ring surrounding it
sented the elements of two engines combined at one point only forming a butment, as shown
in one in such manner that steam operates on in Fig. 1. Each one of said drums is perfor-
two pistons simultaneously, but it will be ob- atedat b b, so that steam can pass freely through
vions from the following description that the it on its way to or from the diaphragm E. Lat-
elementsof one engine may be omitted. A A' rally each eccentric drum is ground steam-
represent two hollow rings, which are arranged tight between the walls inclosing it. The axes
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Richardson, John Dun. Improvement in Rotary Engines., patent, February 6, 1872; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth165322/m1/5/: accessed June 23, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.